CN216715326U - K-shaped liquid control valve with no diaphragm, shaft sleeve and spring - Google Patents

K-shaped liquid control valve with no diaphragm, shaft sleeve and spring Download PDF

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Publication number
CN216715326U
CN216715326U CN202122628902.8U CN202122628902U CN216715326U CN 216715326 U CN216715326 U CN 216715326U CN 202122628902 U CN202122628902 U CN 202122628902U CN 216715326 U CN216715326 U CN 216715326U
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piston
inner cavity
valve
sealing ring
pipeline
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张磊
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Abstract

The utility model discloses a K-shaped liquid control valve with a diaphragm-free shaft sleeve, a shaft sleeve and a spring. The K-type liquid control valve comprises a cover, a body, a piston cylinder inner ring, a piston, a sealing ring groove, a sealing ring, an extending end face below the piston and a body outlet end inner cavity spigot; the sealing ring is arranged in the sealing ring groove, the piston is arranged in the inner ring of the piston cylinder, the piston and the extending end face below the piston are integrated, and the cover and the body or the cover, the seat and the body are sealed into a whole. The utility model does not need to use a diaphragm, a shaft lever, a shaft sleeve and a spring, and has simple structure and small head loss.

Description

K-shaped liquid control valve with no diaphragm, shaft sleeve and spring
Technical Field
The utility model relates to a K-shaped liquid control valve of a spring of a diaphragm-free shaft sleeve, in particular to a K-shaped liquid control valve of a spring of a diaphragm-free shaft sleeve, which can meet the requirements of various liquid flowing working conditions and can be formed by different processing structures and the assembly form of a sealing ring.
Background
The existing liquid control valve needs to use a diaphragm, a shaft lever, a shaft sleeve and a spring; the liquid flow direction can only control the valve in one way during operation; the static liquid flow cannot be set under the conditions required by the working conditions.
The existing liquid control valve is provided with a diaphragm to push a cut-off pressing plate connected with a shaft rod to close and open the valve, once the diaphragm is damaged and replaced quite difficultly, the diaphragm can be replaced by professional technicians, particularly, the diaphragm of the large-caliber valve is more difficult to replace, and the diaphragm for manufacturing the large-caliber liquid control valve and the processing cost are quite high.
The existing liquid control valve needs to be provided with a shaft lever and a shaft sleeve to guide and push a closure pressing plate connected with the shaft lever to effectively close and open the valve, and because the shaft lever and the shaft sleeve need to be arranged, the scaling phenomenon is easily generated in a large amount of liquid, and the valve is easily closed or opened to lose efficacy.
The existing liquid control valve only controls the valve in a one-way mode in the flowing direction of liquid during operation, so that the application range has a plurality of limitations.
The existing liquid control valve needs to use a spring to reset and increase the stability when the valve is closed, and the elasticity of the spring can cause certain pressure loss of the starting pressure for opening the valve, so that the starting pressure requirement is large, the head loss of the valve is large, and the valve can only be used in a specific working condition.
SUMMERY OF THE UTILITY MODEL
The liquid control valve of the spring of the shaft sleeve of the shaft without the diaphragm overcomes the technical defects of the current liquid control valve, and the K-shaped liquid control valve of the spring of the shaft sleeve of the shaft without the diaphragm can meet the requirements of various liquid flowing working conditions by processing and assembling types with different structures without using the diaphragm, the shaft rod, the shaft sleeve and the spring. Under the condition that the working condition needs, the liquid flowing direction can pass through the K-shaped liquid control valve of the diaphragm-free shaft rod shaft sleeve spring in a one-way or two-way mode, and the K-shaped liquid control valve of the diaphragm-free shaft rod shaft sleeve spring is closed in the one-way or two-way mode; the K-shaped liquid control valve without the diaphragm, the shaft sleeve and the shaft sleeve can set the static liquid flow under the condition of working condition requirement.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a no diaphragm shaft sleeve spring K type liquid control valve, its structural feature is: the piston comprises a cover, a body, an inner ring of a piston cylinder, a piston, a sealing ring groove arranged on the outer wall surface of the piston, a sealing ring, an extending end surface below the piston and a spigot of an inner cavity of a body outlet end; the arrangement mode of the inner ring of the piston cylinder adopts one of the following seven forms:
is arranged on the position of the piston corresponding to the cover,
is arranged at the position of the piston corresponding to the body,
at the same time, the piston is arranged at the position corresponding to the cover and the body,
is arranged on the position of the piston corresponding to the seat, wherein the seat is arranged between the cover and the body,
at the same time, the piston is arranged at the position corresponding to the cover and the seat,
at the same time, the piston is arranged at the position corresponding to the seat and the body,
at the same time, the piston is arranged at the position corresponding to the cover, the seat and the body;
the sealing ring is arranged in the sealing ring groove, the piston is arranged in the inner ring of the piston cylinder, the piston and the extending end surface below the piston are integrated, and the cover and the body or the cover, the seat and the body are sealed into a whole;
the inner ring of the sealing ring is sealed with the sealing ring groove, and the outer ring of the sealing ring is statically sealed and slidably sealed with the inner ring of the piston cylinder, so that the inner cavity of the piston is sealed with the inner cavity of the body outlet end;
the body is provided with a body inlet end inner cavity and a body outlet end inner cavity, and the extending end surface below the piston is matched and sealed with a body outlet end inner cavity spigot after the piston moves, so that the body inlet end inner cavity and the body outlet end inner cavity are sealed.
The utility model does not need to use the diaphragm, the shaft lever, the shaft sleeve and the spring of the existing hydraulic valve, and has simple structure and small head loss.
According to the embodiment of the utility model, the utility model can be further optimized, and the following is the technical scheme formed after optimization:
in one preferred embodiment, the cross section of the piston cylinder inner ring is circular, the cross section of the piston is circular, the longitudinal section of the piston is U-shaped, the cross section of the sealing ring groove is circular, the structural shape of the longitudinal section is concave, the position of a center line of the piston cylinder inner ring is the same as that of a center line of the piston, the cross section of the sealing ring is circular, the longitudinal section of the sealing ring is V-shaped, and the cross section of the outlet end inner cavity spigot is circular.
In one preferred embodiment, the inner diameter of the spigot of the outlet end inner cavity is smaller than the outer diameter of the piston, the circle plane of the inner ring of the piston cylinder is parallel to the circle plane of the spigot of the body outlet end inner cavity in interval and has the same center line position, the center line position of the circle plane of the inner ring of the piston cylinder is the same as the center line position of the piston arranged in the inner ring of the piston cylinder, the outer ring of the sealing ring is in contact with the inner ring of the piston cylinder), the direction of the piston inner diameter opening of the piston faces towards the inner cavity of the piston or the opposite direction of the inner cavity of the piston, and the piston and the end surface extending below the piston are vertically connected and fixed into a whole; the inner ring of the sealing ring and the outer ring of the sealing ring have elastic retention, once the direction of the expansion opening of the sealing ring is pressurized by liquid, the sealing ring can expand and contract along with the increase and decrease of the hydraulic pressure, and if the direction of the expansion opening of the sealing ring is pressurized by the hydraulic pressure in the opposite direction, the sealing ring can not expand and contract along with the increase and decrease of the hydraulic pressure; the direction of the expansion opening of the sealing ring is towards the inner cavity of the piston or the opposite direction of the inner cavity of the piston.
In one preferred embodiment, the piston cylinder inner ring is arranged on a T-shaped piston cylinder inner ring seat, the number of the sealing rings is the same as that of grooves of the piston sealing rings to be processed, the sealing rings are matched with the grooves of the piston sealing rings in type, the T-shaped piston cylinder inner ring seat and the T-shaped piston cylinder inner ring seat are sealed and connected into a whole by fasteners, and the cover and the body are fixedly connected into a whole by screws.
In a preferred embodiment, a II-type piston cylinder inner ring seat is arranged between the cover and the body, the piston cylinder inner ring is arranged on the II-type piston cylinder inner ring seat, the number of the sealing rings is the same as that of the grooves of the piston sealing rings, the number of the sealing rings is matched with that of the grooves of the piston sealing rings, and the cover, the II-type piston cylinder inner ring seat and the body are sealed and connected into a whole by fasteners.
In one preferable embodiment, 1 cut-off port is arranged above or below the inner ring of the piston cylinder, the ring plane of the cut-off port is parallel to the ring plane of the inner ring of the piston cylinder in the interval and the center line position is the same, the upward extending part of the sealing ring groove or the lower end face of the sealing ring groove is in fit sealing with the cut-off port after the piston moves downwards, the lower extending end face of the piston is in fit sealing with the cut-off port of the inner cavity of the body outlet end, the upward extending part of the sealing ring groove is provided with a first sealing face, the lower end face of the sealing ring groove is provided with a second sealing face, and the cover and the body are sealed and connected into a whole by adopting a fastening piece.
In a preferred embodiment, the seat is provided with a cut-off opening, the ring plane of the cut-off opening is parallel to the ring plane of the inner ring of the piston cylinder, the center line position of the cut-off opening is the same, the upward extending part of the sealing ring groove or the lower end face of the sealing ring groove is matched and sealed with the cut-off opening after the piston moves downwards, the lower extending end face of the piston is matched and sealed with the inner cavity cut-off opening of the outlet end of the body, the upward extending part of the sealing ring groove is provided with a first sealing face, the lower end face of the sealing ring groove is provided with a second sealing face, and the cover, the seat and the body are sealed and connected into a whole by adopting a fastening piece.
In one preferred embodiment, the cap is fitted with a shaft extending into the interior of the piston, the shaft being sealed from contact with the cap.
In one preferred embodiment, the inner cavity of the piston and the inner cavity of the body inlet end, and the inner cavity of the piston and the inner cavity of the body outlet end are connected through a pipeline with a valve or directly connected through a pipeline.
In one preferred embodiment, the valve is provided with an electric actuator, and the electric actuator performs valve opening and closing.
In one preferred embodiment, the inner cavity of the piston is connected with a three-way valve through a pipeline, one outlet of the three-way valve is connected into the inner cavity through a pipeline connector, or one outlet of the three-way valve is connected into the inner cavity through a pipeline and a check valve connector, and the other outlet is connected into the inner cavity through a pipeline connector.
In one preferred embodiment, the inner cavity of the piston enters the end inner cavity through the pipeline and the inlet two-way valve connector, and the inner cavity of the piston exits the end inner cavity through the pipeline and the outlet two-way valve connector; or alternatively
In one preferred embodiment, the inner cavity of the piston is connected with the inlet end inner cavity through a pipeline, an inlet end two-way valve and a semi-closed check valve, and the inner cavity of the piston is connected with the outlet end inner cavity through a pipeline, an outlet end two-way valve and a semi-closed check valve.
In one preferred embodiment, the inner cavity of the piston is connected with a tee joint I through a two-way valve I, two outlets of the tee joint I are respectively provided with a check valve, wherein the outlet of one check valve enters the inner cavity of the inlet end through a pipeline connector, and the outlet of the other check valve exits the inner cavity of the outlet end through the pipeline connector; the inner cavity of the piston is connected with a tee joint II through a two-way valve II, two outlets of the tee joint II are respectively provided with a check valve, the outlet of one check valve is connected with the inner cavity of the inlet end of the valve body through a pipeline, and the outlet of the other check valve is connected with the inner cavity of the outlet end of the valve body through a pipeline connector.
In one preferred embodiment, the inner cavity of the piston is connected with the inner cavity of the inlet end through a pipeline and an inlet end two-way valve, the inner cavity of the piston is connected with the ball float valve through an outlet end two-way valve and a pipeline, and the flange of the inner cavity of the outlet end of the piston is connected with the pipeline to the liquid pool.
In one preferred embodiment, the inner cavity of the piston is connected with one outlet of a hand wheel three-way pilot valve through a check valve and a pipeline, and the other outlet of the hand wheel three-way pilot valve is connected with a liquid inlet end of the pump through a pipeline; the inlet of the hand wheel three-way pilot valve is connected with the inlet inner cavity through a pipeline and an inlet two-way valve connector, a hand wheel is arranged on the hand wheel three-way pilot valve, and the inner cavity of the piston is connected with the outlet inner cavity through a pipeline and an outlet two-way valve connector.
In one preferred embodiment, the inner cavity of the piston is connected with an inlet of a two-way valve through a pipeline, the outlet of the two-way valve passes through an outlet two-way valve and an outlet inner cavity of a pipeline connector, the inner cavity of the piston passes through a pipeline and an inlet two-way valve connector and enters the inner cavity of the pipeline connector, and the top of the two-way valve is provided with a screw rod; or
The inner cavity of the piston is connected with one outlet of the three-way pilot valve through a pipeline, the other outlet of the three-way pilot valve is connected with the outlet inner cavity of the three-way pilot valve through an outlet two-way valve and a pipeline connector, the inlet inner cavity of the body is connected with the inlet of the three-way pilot valve through an inlet two-way valve and a pipeline, the inner cavity of the piston is connected with the outlet inner cavity of the three-way pilot valve through a two-way valve III and a pipeline connector, and the top of the three-way pilot valve is provided with a screw rod.
The technical scheme of the utility model is further explained in detail as follows:
the utility model relates to a K-shaped liquid control valve of a non-diaphragm shaft sleeve spring, which comprises a cover, a body, a piston cylinder inner ring, a piston, a sealing ring groove, a sealing ring, an extending end face below the piston, a spigot of an inner cavity at the outlet end of the body, a piston cylinder inner ring above the cover, a body, a sealing ring groove above the piston, a sealing ring arranged in the sealing ring groove, a piston arranged in the piston cylinder inner ring, a whole body arranged between the piston and the extending end face below the piston, a whole body sealed between the cover and the body, a sealing between the inner cavity of the piston and the inner cavity at the outlet end of the body to seal the inner ring of the sealing ring and the sealing ring groove as well as the outer ring of the sealing ring and the inner ring of the piston cylinder in a sealing and sliding sealing manner, a sealing between the inner cavity at the inlet end of the body and the inner cavity at the outlet end of the body to make the extending end face below the piston inosculate with the spigot of the inner cavity at the outlet end of the body after the piston moves, the inner cavity of the piston is connected with the inner cavity of the body inlet end and the inner cavity of the body outlet end through a pipeline, a valve or a guide valve. The inner cavity of the piston is connected with the inner cavity of the body inlet end and the inner cavity of the body outlet end through pipelines, and the valve or the pilot valve is connected to form the liquid control valve meeting the requirements of different working conditions.
The plane of the inner ring of the piston cylinder is circular, the plane of the piston is circular, the shape of the cross section is U-shaped, the plane of the sealing ring groove is circular, the structural shape of the cross section is concave, the position of the center line is the same as that of the center line of the piston, the plane of the sealing ring is circular, the shape of the cross section is V-shaped, the plane of the spigot of the inner cavity of the outlet end is circular, the inner diameter of the spigot of the inner cavity of the outlet end is smaller than the outer diameter of the piston, the distance between the plane of the inner ring of the piston cylinder and the plane of the spigot of the inner cavity of the body outlet end is parallel, the position of the center line is the same as and vertical to that of the center line of the piston arranged in the inner ring of the piston cylinder, the piston is arranged in the inner ring of the piston cylinder, and the outer ring of the sealing ring arranged on the sealing ring groove of the sealing ring is required to be contacted with the inner ring of the piston cylinder, the direction of a piston inner diameter opening of a piston arranged in an inner ring of a piston cylinder faces towards an inner cavity of the piston or the direction opposite to the inner cavity of the piston, the piston and an extension end face below the piston are vertically connected and fixed into a whole, a sealing face is arranged on the extension end face below the piston, the inner ring of a sealing ring and a sealing ring groove are sealed, the inner ring of the sealing ring has elastic retention and is in contact sealing with the sealing ring groove, the outer ring of the sealing ring and the inner ring of the piston cylinder are in static sealing and sliding sealing, the outer ring of the sealing ring and the outer ring of the sealing ring have elastic retention, the sealing ring can expand and stretch along with the increase and decrease of hydraulic pressure once the sealing ring is pressed by liquid in the direction of an expansion opening of the sealing ring, and if the sealing ring is pressed by liquid in the direction opposite to the expansion opening of the sealing ring, the sealing ring cannot expand and stretch along with the increase of the hydraulic pressure, The sealing ring is arranged in the groove of the piston sealing ring, the direction of the expansion opening of the sealing ring faces towards the inner cavity of the piston or the direction opposite to the inner cavity of the piston, the cover and the body are connected and fixed into a whole in a sealing way, and the inner cavity of the piston is connected with the inner cavity of the body inlet end and the inner cavity of the body outlet end through pipelines, valves and pilot valves. The inner cavity of the piston is connected with the inner cavity of the body inlet end and the inner cavity of the body outlet end through pipelines, and the valve or the pilot valve is connected to form the liquid control valve meeting the requirements of different working conditions.
The piston cylinder inner ring machining structure, the sealing ring groove machining position structure and the sealing ring assembling structure have the following 14 structural forms, but in the manufacturing and installing process of the valve, the piston cylinder inner ring machining structure, the sealing ring groove machining position structure and the sealing ring assembling structure can be changed according to the requirements, but under the condition of following the basic structural principle of the utility model, the range of the change of the forms of the piston cylinder inner ring machining structure, the sealing ring groove machining position structure and the sealing ring assembling structure beyond the utility model is also the protection range of the utility model.
When the base is not arranged, the inner ring of the piston cylinder is processed on the cover, the body and the cover, one of three processing modes is selected, the sealing ring grooves are processed on the piston, the number of the processed sealing ring grooves is 1-1, the number of the installed sealing rings is the same as that of the processed piston sealing ring grooves, the types of the installed sealing rings are matched, the cover and the body are fixedly connected into a whole by screws, and the sealing is sealed by sealing strips.
When the base is arranged, the base is additionally arranged between the cover and the body, the inner ring of the piston cylinder is processed on the base, processed on the cover and the base, processed on the base and the body, processed on the cover, the base and the body and processed on the cover and the body, one of five processing modes is selected, the sealing ring grooves are processed on the piston, the number of the processed sealing ring grooves is 1-1, the number of the installed sealing rings is the same as that of the processed piston sealing ring grooves, the types of the installed sealing rings are matched, the cover, the base and the body are fixedly connected into a whole by screws, and sealing is sealed by sealing strips.
The inner ring of the piston cylinder is processed on a T-shaped piston cylinder inner ring seat, the sealing ring grooves are processed on the piston, the number of the processed sealing ring grooves is 1-1, the number of the installed sealing rings is the same as that of the processed piston sealing ring grooves, the types of the installed sealing rings are matched, the T-shaped piston cylinder inner ring seat and the T-shaped piston cylinder inner ring seat are fixedly connected into a whole by screws, the sealing is sealed by sealing strips, the cover and the body are fixedly connected into a whole by screws, and the sealing is sealed by sealing strips.
The K-type liquid control valve is characterized in that a II-type piston cylinder inner ring seat is additionally arranged between the cover and the body, a piston cylinder inner ring is processed on the II-type piston cylinder inner ring seat, a sealing ring groove is processed on the piston, the number of the processed sealing ring grooves is 1 to more than 1, the number of the installed sealing rings is the same as that of the processed piston sealing ring grooves, the types of the installed sealing rings are matched, the cover, the II-type piston cylinder inner ring seat and the body are in sealing connection through screws to form a whole, and sealing is sealed through sealing strips.
The K-type liquid control valve is characterized in that 1 cut-off port is arranged above or below the inner ring of the piston cylinder, the ring plane of each cut-off port is parallel to the ring plane of the inner ring of the piston cylinder in the interval and the central line position of the inner ring of the piston cylinder in the interval, the upper extending part of the sealing ring groove or the lower end face of the sealing ring groove is matched and sealed with the cut-off port after the piston moves downwards, meanwhile, the lower extending end face of the piston is matched and sealed with the inner cavity cut-off port of the outlet end of the body, the upper extending part of the sealing ring groove is provided with a sealing face, the lower end face of the sealing ring groove is provided with a sealing face, the cover and the body are fixedly connected into a whole by screws, and the sealing is sealed by adopting a sealing strip.
The K-shaped liquid control valve is characterized in that a seat is additionally arranged between the cover and the body, a cut-off opening is formed in the seat, the ring plane of the cut-off opening is parallel to the ring plane of the inner ring of the piston cylinder in the interval and the central line position is the same, the upward extending part of a piston sealing ring groove or the lower end surface of the sealing ring groove is in fit sealing with the cut-off opening after the piston moves downwards, meanwhile, the lower extending end surface of the piston is in fit sealing with the inner cavity cut-off opening of the body outlet end, the upward extending part of the sealing ring groove is provided with a sealing surface, the lower end surface of the sealing ring groove is provided with a sealing surface, the cover, the seat and the body are fixedly connected into a whole by screws in sealing connection, and the sealing is sealed by adopting a sealing strip.
The diaphragm-free shaft rod shaft sleeve spring K-type liquid control valve is characterized in that a shaft rod is installed on the cover and extends into an inner cavity of the piston, the contact position between the shaft rod and the cover is sealed, and the shaft rod can move up and down through rotating a hand wheel.
The valve is provided with an electric actuator, and the valve is opened and closed by the electric actuator.
The utility model describes the connection mode of the inner cavity of the piston, the inner cavity of the body inlet end and the inner cavity of the body outlet end through pipelines, valves or pilot valves:
the inner cavity of the piston is connected with the inner cavity of the body inlet end and the inner cavity of the body outlet end through pipelines, valves or pilot valves to form a liquid control valve meeting the requirements of different working conditions. The pipe connection, valve connection or pilot valve connection form of the utility model has the following 9 connection forms, but the pipe connection, valve connection or pilot valve connection of the utility model is not limited to the 9 connection forms, and the connection forms of the pipe connection, valve connection or pilot valve connection which can be correspondingly changed for meeting the requirements of the required working conditions can be made between the inner cavity of the piston of the utility model and the inner cavity of the body inlet end and the inner cavity of the body outlet end through the pipe connection, the valve connection or the pilot valve connection according to the requirements of the working conditions under the condition of following the basic structural principle of the utility model are also the protection scope of the utility model.
Following the basic principle of the utility model:
the inner cavity of the piston is connected with a three-way valve through a pipeline, one outlet of the three-way valve is connected into the inner cavity of the end through a pipeline connector, and the other outlet of the three-way valve is connected out of the inner cavity of the end through a pipeline connector.
The liquid control device is a liquid control valve, the inner cavity of the piston is connected with a three-way valve through a pipeline, one outlet of the three-way valve is connected into the inner cavity through a pipeline and a check valve connector, and the other outlet of the three-way valve is connected with the inner cavity through a pipeline connector.
The diaphragm-free shaft sleeve and spring K-type liquid control valve is characterized in that the inner cavity of the piston is connected into the inner cavity of the inlet end through a pipeline and an inlet end two-way valve connector, and the inner cavity of the piston is connected into the outlet end inner cavity through a pipeline and an outlet end two-way valve connector.
The diaphragm-free shaft sleeve spring K-type liquid control valve is characterized in that an inner cavity of a piston passes through a pipeline, an inlet two-way valve and a semi-closed check valve connector and enters an inner cavity, and an inner cavity of the piston passes through a pipeline, an outlet two-way valve and a semi-closed check valve connector and exits an inner cavity.
The inner cavity of the piston is connected with a tee joint through a two-way valve, a check valve is installed at two outlets of the tee joint, the outlet of the check valve is connected into the inner cavity through a pipeline connector, the outlet of the check valve is connected out of the inner cavity through a pipeline connector, the inner cavity of the piston is connected with the tee joint through the two-way valve, the two outlets of the tee joint are respectively installed with a check valve, the outlet of the check valve is connected into the inner cavity through a pipeline, and the outlet of the check valve is connected into the inner cavity through a pipeline connector.
The diaphragm-free shaft sleeve spring K-type liquid control valve is characterized in that an inner cavity of a piston is connected into an inner cavity through a pipeline and an inlet two-way valve connector, the inner cavity of the piston is connected with a ball float valve through an outlet two-way valve and a pipeline, and a flange of the inner cavity of the body outlet end is connected with a pipeline to a liquid pool.
The diaphragm-free shaft sleeve spring K-type liquid control valve is characterized in that an inner cavity of a piston is connected with one outlet of a hand wheel three-way pilot valve through a check valve and a pipeline, the other outlet of the hand wheel three-way pilot valve is connected with a liquid inlet end of a pump through a pipeline, an inlet of the hand wheel three-way pilot valve is connected with an inner cavity of an inlet two-way valve connector through a pipeline, a hand wheel is arranged on the hand wheel three-way pilot valve, and an inner cavity of the piston is connected with an outlet inner cavity of an outlet two-way valve connector through a pipeline.
The diaphragm-free shaft rod shaft sleeve spring K-type liquid control valve is characterized in that an inner cavity of a piston is connected with an inlet of a two-way valve through a pipeline, an outlet of the two-way valve passes through an outlet two-way valve and an outlet inner cavity of a pipeline connector, an inner cavity of the piston passes through a pipeline and an inlet two-way valve connector and enters an inner cavity, and a screw rod is arranged at the top of the two-way valve.
The diaphragm-free shaft sleeve spring is a liquid control valve, the inner cavity of the piston is connected with one outlet of the three-way pilot valve through a pipeline, the other outlet of the three-way pilot valve passes through an outlet two-way valve and an outlet inner cavity of a pipeline connector, the body inlet inner cavity passes through an inlet two-way valve and a pipeline and is connected with the inlet of the three-way pilot valve, the inner cavity of the piston passes through an outlet inner cavity of the two-way valve and the pipeline connector, and the top of the three-way pilot valve is provided with a screw rod.
By using the K-shaped liquid control valve without the diaphragm, the processing structure and the assembling method can enable the diaphragm of the liquid control valve to be replaced by the sealing ring, and navigation of the shaft lever and the shaft sleeve is not needed, so that the assembling becomes convenient; after the K-type liquid control valve without the diaphragm shaft sleeve spring is installed and used, if a sealing ring and a piston are damaged, due to the unique manufacturing and assembling method, the K-type liquid control valve is extremely convenient to maintain and does not need to be replaced by professional technicians, and therefore the service life of the K-type liquid control valve without the diaphragm shaft sleeve spring can be basically the same as that of a pipeline.
The K-shaped liquid control valve without the diaphragm, the shaft sleeve and the spring has the advantages that the failure rate of the liquid control valve is reduced due to the unique design, and the application range of the liquid control valve is enlarged.
In the aspect of manufacturing, the K-shaped liquid control valve without the diaphragm, the shaft lever and the shaft sleeve has no diaphragm, shaft lever and shaft sleeve, so that the manufacturing is simple and the cost is reduced; especially, the equipment grade required for manufacturing the large-opening liquid control valve can be greatly reduced, so that the liquid control valve with an ultra-large diameter can be manufactured.
The structure and the assembly method of the K-type liquid control valve without the diaphragm, which is disclosed by the utility model, can enable the liquid control valve to be a single component to be assembled on site, and particularly can greatly reduce the transportation and installation costs in the transportation and installation of large valves.
The structure of the K-type liquid control valve without the diaphragm, the shaft lever, the shaft sleeve and the spring can ensure that the liquid control valve does not need to be provided with the diaphragm, the shaft lever, the shaft sleeve and the spring; the liquid can pass through the valve in one or two directions, and the valve is closed in one or two directions; the liquid flow and pressure can be dynamically and statically controlled, so that the application range of the liquid control valve can meet the technical and performance requirements of valves such as gate valves, butterfly valves, stop valves, flow limiting valves, check valves, ball float valves, pressure reducing valves, pressure relief valves, electric valves and the like, and the intelligent control of liquid flow is particularly easy to realize.
Drawings
FIG. 1 is a schematic diagram of the basic structure of a first diaphragm-free shaft sleeve spring K-type liquid control valve; wherein a) a front section of the body, b) a front section of the cover, c) a front section of the first piston and its groove and lower extension end surface as a whole, d) a front section of the second piston and its groove and lower extension end surface as a whole, e) a sealing ring and its partially enlarged front section, f) a front section of the valve embodiment.
FIG. 2 is a schematic diagram of the basic structure of a second diaphragm-free shaft sleeve spring K-type liquid control valve; wherein a) an elevational cross-section of the body, b) an elevational cross-section of the cover, c) an elevational cross-section of the first piston and its groove and lower extension end surface as a whole, d) an elevational cross-section of the second piston and its groove and lower extension end surface as a whole, e) a sealing ring and a partially enlarged elevational cross-section thereof, f) an elevational cross-section of an embodiment of the valve.
FIG. 3 is a schematic diagram showing the basic structure of a third type of K-shaped fluid control valve without a diaphragm and a shaft sleeve spring; wherein a) a front section view of the body, b) a front section view of the cover, c) a front section view of the first piston and its groove and the lower extension end face as a whole, d) a front section view of the second piston and its groove and the lower extension end face as a whole, e) a first sealing ring and its partially enlarged front section view, f) a second sealing ring and its partially enlarged front section view, g) a valve embodiment and its partially enlarged front section view.
Fig. 4 is a schematic diagram of the basic structure of a fourth diaphragm-free shaft sleeve spring K-type liquid control valve, and a schematic diagram of a front section of an embodiment of the valve.
FIG. 5 is a schematic diagram of the basic structure of a fifth diaphragm-free shaft sleeve spring K-type liquid control valve; wherein a) an elevational and sectional view of the body, b) an elevational and sectional view of the cover, c) an elevational and sectional view of the first piston and its concave groove, partially enlarged and lower extension end face as a whole, d) an elevational and sectional view of the second piston and its lower extension end face as a whole and its U-shaped piston, e) a sealing ring and its V-shaped, partially enlarged elevational and sectional view, f) an elevational and sectional view of an embodiment of the valve.
FIG. 6 is a schematic diagram showing the basic structure of a sixth type of K-type diaphragm-free liquid control valve with a shaft sleeve and a spring; wherein a) an elevational and sectional view of the body, b) an elevational and sectional view of the cover, c) an elevational and sectional view of the first piston and its concave groove, partially enlarged and lower extension end face as a whole, d) an elevational and sectional view of the second piston and its lower extension end face as a whole and its U-shaped piston, e) a sealing ring and its V-shaped, partially enlarged elevational and sectional view, f) an elevational and sectional view of an embodiment of the valve.
FIG. 7 is a schematic diagram of the basic structure of a seventh non-diaphragm shaft sleeve spring K-type liquid control valve; wherein a) an elevational and sectional view of the body, b) an elevational and sectional view of the cover, c) an elevational and sectional view of the first piston and its concave groove, partially enlarged and of the lower extension end piece as a whole, d) an elevational and sectional view of the second piston and its lower extension end piece as a whole and its U-shaped piston, e) an elevational and sectional view of the sealing ring and its V-shaped, partially enlarged, and an elevational and sectional view of the valve embodiment and its partially enlarged.
FIG. 8 is a schematic diagram of the basic structure of an eighth type of diaphragm-free shaft sleeve spring K-type liquid control valve; valve embodiments and partially enlarged front sectional views thereof.
FIG. 9 is a schematic view of a seal ring groove processing structure and a seal ring assembling structure of a ninth non-diaphragm shaft sleeve spring K-type liquid control valve; wherein a) a front section view of the body, b) a front section view of the cover, c) a front section view of the first piston and its lower extending end piece and its piston concave groove, d) a front section view of the second piston and its lower extending end piece and its piston, e) a front section view of the first sealing ring and its V-shaped partial enlargement, f) a front section view of the second sealing ring and its V-shaped partial enlargement g) a front section view of an embodiment of the valve and its partial enlargement.
FIG. 10 is a schematic view of a seal ring groove machining structure and a seal ring assembling structure of a tenth K-type fluid control valve without a diaphragm shaft sleeve spring; wherein a) a front section view of the body, b) a front section view of the cover, c) a front section view of the first piston and its lower extending end piece and its piston concave groove, d) a front section view of the second piston and its lower extending end piece and its piston, e) a front section view of the first sealing ring and its V-shaped partial enlargement, f) a front section view of the second sealing ring and its V-shaped partial enlargement g) a front section view of an embodiment of the valve and its partial enlargement.
FIG. 11 is a schematic view showing a seal ring groove processing structure and a seal ring assembling structure of an eleventh K-type fluid control valve without a diaphragm, a shaft sleeve and a spring; wherein a) a front section view of the body, b) a front section view of the cover, c) a front section view of the first piston and the lower extending end piece with its piston concave groove, d) a front section view of the second piston and the lower extending end piece with its piston, e) a front section view of the first sealing ring with its V-shaped partial enlargement, f) a front section view of the second sealing ring with its V-shaped partial enlargement g) a front section view of an embodiment of the valve and a partial enlargement thereof.
FIG. 12 is a schematic view of a seal ring groove machining structure and a seal ring assembling structure of a twelfth K-type fluid control valve without a diaphragm shaft sleeve spring; a) an elevational and sectional view of the body, b) an elevational and sectional view of the cover, c) an elevational and sectional view of the first piston and the lower extending end piece as a whole and its piston concave groove, d) an elevational and sectional view of the second piston and the lower extending end piece as a whole and its piston, e) an elevational and sectional view of the seat, f) an elevational and sectional view of the first sealing ring and its V-shaped part enlarged, g) an elevational and sectional view of the second sealing ring and its V-shaped part enlarged, h) an elevational and sectional view of an embodiment of the valve and its part enlarged.
FIG. 13 is a schematic view of a sealing ring groove processing structure and a sealing ring assembling structure of a thirteenth K-type fluid control valve without a diaphragm shaft sleeve spring; a) an elevational and sectional view of the body, b) an elevational and sectional view of the cover, c) an elevational and sectional view of the first piston and the lower extending end piece as a whole and its piston concave groove, d) an elevational and sectional view of the second piston and the lower extending end piece as a whole and its piston, e) an elevational and sectional view of the seat, f) an elevational and sectional view of the first sealing ring and its V-shaped part enlarged, g) an elevational and sectional view of the second sealing ring and its V-shaped part enlarged, h) an elevational and sectional view of an embodiment of the valve and its part enlarged.
FIG. 14 is a schematic view showing a groove processing structure of a seal ring and an assembling structure of a seal ring of a fourteenth K-type fluid control valve without a diaphragm shaft sleeve spring; a) an elevational and sectional view of the body, b) an elevational and sectional view of the cover, c) an elevational and sectional view of the first piston and the lower extending end piece as a whole and its piston concave groove, d) an elevational and sectional view of the second piston and the lower extending end piece as a whole and its piston, e) an elevational and sectional view of the seat, f) an elevational and sectional view of the first sealing ring and its V-shaped part enlarged, g) an elevational and sectional view of the second sealing ring and its V-shaped part enlarged, h) an elevational and sectional view of an embodiment of the valve and its part enlarged.
Fig. 15 is a schematic view of a fifteenth seal ring groove machining structure and seal ring assembly structure of a diaphragm-less shaft sleeve spring K-type liquid control valve a) an elevational sectional view of the body, b) an elevational sectional view of the cap, c) an elevational sectional view of the first piston and the lower extending end piece as well as its piston concave groove, d) an elevational sectional view of the second piston and the lower extending end piece as well as its piston, e) an elevational sectional view of the seat, f) an elevational sectional view of the first seal ring as well as its V-shape partially enlarged, g) an elevational sectional view of the second seal ring as well as its V-shape partially enlarged, h) an elevational sectional view of the valve embodiment as well as a partially enlarged schematic view thereof.
FIG. 16 is a schematic view of a seal ring groove processing structure and a seal ring assembling structure of a sixteenth type K-type diaphragm-free shaft sleeve spring liquid control valve; a) an elevational and sectional view of the body, b) an elevational and sectional view of the cover, c) an elevational and sectional view of the first piston and the lower extending end piece as a whole and its piston concave groove, d) an elevational and sectional view of the second piston and the lower extending end piece as a whole and its piston, e) an elevational and sectional view of the seat, f) an elevational and sectional view of the first sealing ring and its V-shaped part enlarged, g) an elevational and sectional view of the second sealing ring and its V-shaped part enlarged, h) an elevational and sectional view of an embodiment of the valve and its part enlarged.
FIG. 17 is a schematic view of a seal ring groove processing structure and a seal ring assembling structure of a seventeenth K-type fluid control valve without a diaphragm shaft sleeve spring; a) an elevational and sectional view of the body, b) an elevational and sectional view of the cover, c) an elevational and sectional view of the first piston and the lower extending end piece as a whole and its piston concave groove, d) an elevational and sectional view of the second piston and the lower extending end piece as a whole and its piston, e) an elevational and sectional view of the seat, f) an elevational and sectional view of the first sealing ring and its V-shaped part enlarged, g) an elevational and sectional view of the second sealing ring and its V-shaped part enlarged, h) an elevational and sectional view of an embodiment of the valve and its part enlarged.
FIG. 18 is a groove machining structure and a packing assembling structure of a packing of an eighteenth K-type liquid control valve without a diaphragm shaft sleeve spring; a) an elevational and sectional view of the body, b) an elevational and sectional view of the cover, c) an elevational and sectional view of the first piston and the lower extending end piece as a whole and its piston concave groove, d) an elevational and sectional view of the second piston and the lower extending end piece as a whole and its piston, e) an elevational and sectional view of the seat, f) an elevational and sectional view of the first sealing ring and its V-shaped part enlarged, g) an elevational and sectional view of the second sealing ring and its V-shaped part enlarged, h) an elevational and sectional view of an embodiment of the valve and its part enlarged.
FIG. 19 is a schematic view of a basic structure of a K-spring type liquid control valve without a diaphragm shaft sleeve; a) an elevational and sectional view of the body, b) an elevational and sectional view of the cover, c) an elevational and sectional view of the first piston and the lower extending end piece as a whole and its concave groove, d) an elevational and sectional view of the second piston and the lower extending end piece as well as the piston, e) an elevational and sectional view of the first sealing ring and its V-shaped part, f) a second sealing ring and its V-shaped part sectional view g) an elevational and sectional view of an embodiment of the valve and its part enlarged.
FIG. 20 is a schematic view of a dual-stop valve of the basic structure of a K-type fluid control valve without a diaphragm, a shaft sleeve and a spring; a) an elevational and sectional view of the body, b) an elevational and sectional view of the cover, c) an elevational and sectional view of the first piston and the lower extending end piece as a whole and its concave groove, d) an elevational and sectional view of the second piston and the lower extending end piece as well as the piston, e) an elevational and sectional view of the first sealing ring and its V-shaped part, f) a second sealing ring and its V-shaped part sectional view g) an elevational and sectional view of an embodiment of the valve and its part enlarged.
FIG. 21 is a schematic diagram of a double-stop valve of another basic structure of a K-type fluid control valve without a diaphragm, a shaft sleeve and a spring; a) an elevational and sectional view of the body, b) an elevational and sectional view of the cover, c) an elevational and sectional view of the first piston and the lower extending end piece as a whole and its piston concave groove, d) an elevational and sectional view of the second piston and the lower extending end piece as a whole and its piston, e) an elevational and sectional view of the seat, f) an elevational and sectional view of the first sealing ring and its V-shaped part enlarged, g) an elevational and sectional view of the second sealing ring and its V-shaped part enlarged, h) an elevational and sectional view of an embodiment of the valve and its part enlarged.
FIG. 22 is a schematic view of a dual-stop valve of another basic structure of a K-type fluid control valve without a diaphragm shaft sleeve spring; a) an elevational and sectional view of the body, b) an elevational and sectional view of the cover, c) an elevational and sectional view of the first piston and the lower extending end piece as a whole and its piston concave groove, d) an elevational and sectional view of the second piston and the lower extending end piece as a whole and its piston, e) an elevational and sectional view of the seat, f) an elevational and sectional view of the first sealing ring and its V-shaped part enlarged, g) an elevational and sectional view of the second sealing ring and its V-shaped part enlarged, h) an elevational and sectional view of an embodiment of the valve and its part enlarged.
Fig. 23 is a schematic diagram of a flow-limiting valve structure of a basic structure of a K-shaped liquid control valve without a diaphragm shaft sleeve spring.
Fig. 24 is a schematic diagram of a flow-restricting valve structure of another diaphragm-free shaft sleeve spring K-type liquid control valve basic structure.
Fig. 25 is a schematic diagram of an electric valve structure of a basic structure of a K-type liquid control valve without a diaphragm shaft sleeve spring.
Fig. 26 is a schematic diagram of an alternative non-diaphragm spindle sleeve spring K-type liquid control valve basic structure electric valve configuration.
Fig. 27 is a schematic diagram of a one-way single shut-off valve for a non-diaphragm shaft sleeve spring K-type liquid control valve.
Fig. 28 is a schematic diagram of a one-way double shut-off valve for a K-spring type fluid control valve without a diaphragm shaft sleeve.
FIG. 29 is a schematic view of a non-diaphragm, spring-K type liquid control valve check valve and shut-off valve.
FIG. 30 is a schematic diagram of a two-way single shut-off valve for a diaphragm-free shaft sleeve spring K-type fluid control valve.
Fig. 31 is a schematic diagram of a two-way dual shut-off valve for a K-spring fluid control valve without a diaphragm shaft sleeve.
Fig. 32 is a schematic diagram of a floating ball valve of a diaphragm-free shaft sleeve spring K-type liquid control valve.
Fig. 33 is a schematic diagram of a K-type fluid control valve restrictor and check valve without a diaphragm shaft sleeve spring.
Fig. 34 is a schematic diagram of a pressure reducing and stabilizing valve of a K-spring type liquid control valve without a diaphragm shaft sleeve.
FIG. 35 is a schematic diagram of a no diaphragm stem sleeve spring K-type fluid control valve relief valve.
In the figure:
the sealing device comprises a cover 1, a seat 2, a body 3, a piston cylinder inner ring 4, a piston sealing ring groove 5, a sealing ring 6, a piston lower extending end face 7, a body outlet end inner cavity spigot 8, a piston inner cavity 9, a body outlet end inner cavity 10, a sealing ring inner ring 11, a sealing ring outer ring 12, a body inlet end inner cavity 13, a concave shape 14, a V-shaped 15, a sealing face 16, a sealing ring expansion opening 17, a pipeline 18, a first valve 19, a U-shaped 20, a screw 21, a sealing strip 22, a T-shaped piston cylinder inner ring seat 23, a screw 24, a II-shaped piston cylinder inner ring seat 25, a stop opening 26, an upper outward extending part 27, a lower end face 28, a first sealing face 29, a second sealing face 30, a shaft rod 31, a handwheel 32, a three-way valve 33, a check valve 34, an inlet two-way valve 35, an outlet two-way valve 36, a semi-closing check valve 37, a two-way valve I38, a three-way valve I39, a two-way valve II 40, a three-way II 41, a floating ball valve 42, a floating ball valve II, A flange 43 of the body outlet end inner cavity, a pipeline 44, a liquid pool 45, a hand wheel three-way pilot valve 46, a pump 47, a liquid inlet end 48, a hand wheel 49, a two-way pilot valve 50, a screw 51, a three-way pilot valve 52, a two-way valve III 53, an electric actuator 54, a piston 55, a piston inner diameter opening 56 and a second valve 57.
Detailed Description
Example 1
The utility model relates to a spring K-type liquid control valve of a diaphragm-free shaft sleeve, which comprises a cover 1, a body 3, a piston cylinder inner ring 4, a piston 55, a seal ring groove 5, a seal ring 6, an extension end surface 7 below the piston and a body outlet end inner cavity spigot 8, and is characterized in that: the piston cylinder inner ring 4 is arranged on the cover 1, the piston cylinder inner ring 4 is arranged on the body 3, the cover 1 and the body 3 are arranged, the sealing ring groove 5 is arranged on the piston 55, the sealing ring 6 is arranged in the sealing ring groove 5, the piston 55 is arranged in the piston cylinder inner ring 4, the piston 55 and the piston lower extending end surface 7 are integrated, the cover 1 and the body 3 are sealed into a whole, the inner cavity 9 of the piston and the body outlet end inner cavity 10 are sealed, the inner ring 11 of the sealing ring is sealed with the sealing ring groove 5, the outer ring 12 of the sealing ring is sealed with the piston cylinder inner ring 4 in a sliding manner, the body inlet end inner cavity 13 is sealed with the body outlet end inner cavity 10, the piston lower extending end surface 7 is matched and sealed with the body outlet end inner cavity spigot 8 after the piston 55 moves, the inner cavity 9 of the piston is connected with the body inlet end inner cavity 13 and the body outlet end inner cavity 10 through a pipeline, a valve or a pilot valve, as shown in fig. 1, 2, 3, and 4.
Example 2
The K-shaped liquid control valve of the diaphragm-free shaft sleeve spring is characterized in that as shown in figures 5, 6, 7 and 8, the plane of the piston cylinder inner ring 4 is circular, the plane of the piston 55 is circular, the cross section of the piston 55 is U-shaped 20, the plane of the sealing ring groove 5 is circular, the cross section of the sealing ring groove 5 is concave 14, the position of a center line is the same as that of the center line of the piston 55, the plane of the sealing ring 6 is circular, the cross section of the sealing ring 6 is V-shaped 15, the plane of the outlet end inner cavity spigot 8 is circular, the inner diameter of the outlet end inner cavity spigot 8 is smaller than the outer diameter of the piston 55, the distance between the ring plane of the piston cylinder inner ring 4 and the ring plane of the body outlet end inner cavity spigot 8 is parallel, the position of the center line is the same as that of the piston 55 arranged in the piston cylinder inner ring 4, the position of the center line of the ring plane of the piston cylinder inner ring 4 is the same as that of the piston 55 arranged in the piston cylinder inner ring 4, The piston 55 is vertically arranged in the inner ring 4 of the piston cylinder, the outer ring 12 of the sealing ring 6 arranged on the sealing ring groove 5 is required to be contacted with the inner ring 4 of the piston cylinder, the direction of the inner diameter opening 56 of the piston 55 arranged in the inner ring 4 of the piston cylinder faces towards the inner cavity 9 of the piston or the reverse direction of the inner cavity 9 of the piston, the piston 55 is vertically connected and fixed with the lower extending end surface 7 of the piston into a whole, the lower extending end surface 7 of the piston is provided with a sealing surface 16, the inner ring 11 of the sealing ring is sealed with the sealing ring groove 5 by the elastic holding of the inner ring 12 of the sealing ring in contact with the sealing ring groove 5, the static sealing and the sliding sealing of the outer ring 12 of the sealing ring and the inner ring 4 of the piston cylinder are realized by the elastic holding of the static sealing and the sliding sealing with the inner ring 4 of the piston cylinder, and the inner ring 11 of the sealing ring, The outer ring 12 of the sealing ring has elastic retention, once the direction of the expansion opening 17 of the sealing ring is pressurized by liquid, the sealing ring 6 expands and contracts along with the increase and decrease of the hydraulic pressure, if the expansion opening 17 of the sealing ring is pressurized by the hydraulic pressure in the opposite direction, the sealing ring 6 cannot expand and contract along with the increase and decrease of the hydraulic pressure, the sealing ring 6 is installed in the sealing ring groove 5 of the piston, the direction of the expansion opening 17 of the sealing ring faces towards the inner cavity 9 of the piston or the opposite direction of the inner cavity 9 of the piston, the cover 1 and the body 3 are connected and fixed into a whole in a sealing mode, and the inner cavity 9 of the piston is connected with the inner cavity 12 of the body inlet end and the inner cavity 10 of the body outlet end through pipelines, valve connection or pilot valve connection.
The specific description is as follows: the structure of the K-type liquid control valve without the diaphragm, the shaft lever, the shaft sleeve and the spring can ensure that the K-type liquid control valve without the diaphragm, the shaft lever, the shaft sleeve and the spring are not required to be installed; liquid can pass through the K-shaped liquid control valve of the diaphragm-free shaft sleeve spring in two directions; the K-shaped liquid control valve without the diaphragm, the shaft sleeve and the shaft sleeve can close liquid in two directions.
The working principle is as follows: as shown in fig. 1, 2, 3, 4, 5, 6, 7 and 8
1. The inner cavity 9 of the piston, the inner cavity 13 of the body inlet end and the inner cavity 10 of the body outlet end are connected through the pipeline 18, the first valve 19 and the second valve 57, when liquid flows from the inner cavity 13 of the body inlet end to the inner cavity 10 of the body outlet end, the first valve 19 on the side of the inner cavity 13 of the body inlet end is closed, the second valve 57 on the side of the inner cavity 10 of the body outlet end is opened, the liquid in the inner cavity 13 of the body inlet end cannot enter the inner cavity 9 of the piston, the extending end face 7 below the piston leaves the spigot 8 of the inner cavity of the body outlet end under the pushing of the liquid in the inner cavity 13 of the body inlet end, the liquid in the inner cavity 13 of the body inlet end enters the inner cavity 10 of the body outlet end through the spigot 8 of the inner cavity of the body outlet end, because the inner cavity 9 of the piston is communicated with the inner cavity 10 of the body outlet end, the liquid pressure in the inner cavity 9 of the piston and the inner cavity 10 of the body outlet end is the same as that the liquid pressure in the inner cavity 13 of the inner cavity of the body outlet end, and the inner cavity 10 of the liquid in the inner cavity 13 of the inner cavity of the body outlet end can enter the inner cavity 10 of the inner cavity of the body outlet end, and the inner cavity 10 of the whole weight and the sealing ring 57, which are only depend on the whole weight of the piston 55, which is vertically and the sealing ring 7, wherein the whole weight are vertically and the whole weight are fixedly connected with the piston, wherein the piston is vertically connected with the piston The outer ring 12 of the sealing ring has the resistance caused by the friction of elastically keeping the contact seal and the sliding contact seal with the inner ring 4 of the piston cylinder, because the outer ring 12 of the sealing ring has the elasticity of elastically keeping the contact seal and the sliding contact seal with the inner ring 4 of the piston cylinder when the sealing ring 6 is not pressed by liquid, the resistance caused by the friction is small, the liquid in the inner cavity 13 of the body inlet end can flow into the inner cavity 10 of the body outlet end as long as the liquid can overcome the whole weight of the vertical fixed connection between the piston 55 and the lower extension end surface 7 of the piston and the pressure loss of the resistance caused by the friction of elastically keeping the contact seal and the sliding contact seal with the inner ring 4 of the piston cylinder when the outer ring 12 of the sealing ring, therefore, the pressure loss of the liquid flowing into the inner cavity 10 of the body outlet end through the inner cavity spigot 8 of the body outlet end is small, and the starting pressure of the K-type liquid control valve without the diaphragm shaft rod shaft sleeve spring is small, the application working condition range of the K-type liquid control valve without the diaphragm shaft sleeve is large.
2. The inner cavity 9, the body inlet end inner cavity 13 and the body outlet end inner cavity 10 of the piston are connected through the pipeline 18, the first valve 19 and the second valve 57, when liquid flows from the body inlet end inner cavity 13 to the body outlet end inner cavity 10, the first valve 19 on the side of the body inlet end inner cavity 13 is opened, the second valve 57 on the side of the body outlet end inner cavity 10 is closed, the liquid in the body inlet end inner cavity 13 enters the inner cavity 9 of the piston, the inner cavity 9 of the piston is not communicated with the body outlet end inner cavity 10, the liquid pressure in the inner cavity 9 of the piston and the inner cavity 13 of the valve body is the same, the liquid pressure in the body outlet end inner cavity 10 is that the liquid pressure in the body inlet end inner cavity 13 overcomes the integral weight of the piston 55 vertically and fixedly connected with the extending end surface 7 below the piston, and the resistance brought by the elastic maintaining of the outer ring 12 of the sealing ring and the sliding contact sealing of the inner ring 4 of the piston cylinder can enter the body outlet end inner cavity 10, therefore, a very small pressure difference exists between the liquid pressure in the inner cavity 13 of the body inlet end and the liquid pressure in the inner cavity 10 of the body outlet end, the outer ring 12 of the sealing ring has very small elasticity for elastically keeping the contact and the sealing with the inner ring 4 of the piston cylinder, the friction of the sliding contact and the sealing of the outer ring 12 of the sealing ring is also small, the outer ring 12 and the inner ring 11 of the oil seal have elastic keeping, therefore, the liquid can not leak into the inner cavity 10 of the body outlet end, because the area of the outer ring of the piston 55 is larger than that of the inner ring of the spigot 7 of the inner cavity of the body outlet end, the piston 55 moves downwards after being pressed, the distance between the extending end surface 7 below the piston and the spigot 7 of the inner cavity of the body outlet end can gradually approach, the liquid pressure difference between the inner cavity 13 of the body inlet end and the inner cavity 10 of the body outlet end can gradually increase, and the direction of the expansion port 17 of the sealing ring can expand along with the increase of the liquid pressure when the liquid pressure gradually increases, at the moment, the sealing ring 6 tends to be in an expanded state in the sealing ring groove 5, and a circle of annular force is formed between the sealing ring groove 5 and the inner ring 4 of the piston cylinder after the sealing ring 6 is expanded, so that the piston 55 tends to be vertical to the plane circle of the inner ring 4 of the piston cylinder, and the extending end surface 7 below the piston and the spigot 8 of the inner cavity of the body outlet end are kept in parallel at a distance; the piston 55 continues to move downwards, the friction resistance between the outer ring 12 of the sealing ring and the sliding contact seal of the piston cylinder inner ring 4 is increased due to the expansion of the sealing ring 6, the piston 55 can not shake when the distance between the piston below extension end face 7 and the body outlet end inner cavity spigot 8 is close after the piston 55 moves downwards, and the valve is enabled to achieve the purposes of forming the parallel and vibration-free fit seal between the piston below extension end face 7 and the body outlet end inner cavity spigot 8, so that the K-type liquid control valve without the diaphragm shaft sleeve spring is free of resetting by using a spring, increasing the stability when the valve is closed, and ensuring the parallel fit seal between the below extension end face 7 and the valve body outlet end inner cavity spigot 8 by using the diaphragm shaft sleeve.
3. The inner cavity 9, the body inlet end inner cavity 13 and the body outlet end inner cavity 10 of the piston are connected through the pipeline 18, the first valve 19 and the second valve 57, when liquid flows from the body outlet end inner cavity 10 to the body inlet end inner cavity 13, the first valve 19 on the side of the body inlet end inner cavity 13 is opened, the second valve 57 on the side of the body outlet end inner cavity 10 is closed, the liquid in the body outlet end inner cavity 10 cannot enter the inner cavity 9 of the piston, the liquid in the inner cavity 9 of the piston can flow into the valve body inlet end inner cavity 13 through the pipeline 18 and the first valve 19 on the side of the inlet end inner cavity 13, the liquid pressure in the inner cavity 9 of the piston is the same as the liquid pressure in the body inlet end inner cavity 13, and as the area of the outer ring of the piston 55 is larger than the area of the inner ring of the body outlet end inner cavity spigot 8, the whole weight of the piston 55 vertically and the outer ring 12 of the sealing ring which are fixedly connected with the extending end face 7 below the piston can be overcome as long as the liquid pressure in the body outlet end inner cavity 10 is larger than the liquid pressure in the inner cavity 13, and the outer ring 12 of the elastic maintenance and the piston The piston 55 is pushed by liquid in the inner cavity 10 of the outlet end of the body to move upwards by resistance brought by friction between sliding contact seals of the inner ring 4 of the cylinder, the extending end surface 7 below the piston leaves the spigot 8 of the inner cavity of the outlet end of the body when the piston 55 moves upwards, the liquid in the inner cavity 10 of the outlet end of the body flows to the inner cavity 13 of the inlet end of the body through the spigot 8 of the inner cavity of the outlet end of the body, and the valve is opened; in the process of opening the valve, the liquid pressure in the inner cavity 10 of the body outlet end and the liquid pressure difference in the inner cavity 13 of the body inlet end are closer and closer, the sealing ring 6 expands and contracts along with the reduction of the hydraulic pressure under the action of the liquid pressure, when the piston 55 moves to the whole weight of the piston 55 vertically and fixedly connected with the extension end surface 7 below the piston and the resistance caused by the friction between the outer ring 12 of the sealing ring and the sliding contact seal of the piston cylinder inner ring 4, the piston 55 does not move upwards any more, so as long as the conveying pressure of the liquid in two flowing directions is the same, the opening degree of the valve is determined by the whole weight of the piston 55 vertically and fixedly connected with the extension end surface 7 below the piston and the resistance caused by the friction between the elastic holding and the sliding contact seal of the outer ring 12 of the sealing ring and the piston cylinder inner ring 4, therefore, the valve can realize the flow from the inner cavity 10 of the body outlet end to the inner cavity 13 of the body inlet end, and the pressure loss of the liquid flowing from the body outlet end inner cavity 10 to the body inlet end inner cavity 13 is small, so that the K-shaped liquid control valve without the diaphragm shaft sleeve spring realizes bidirectional circulation under the condition of small pressure loss.
4. The inner cavity 9, the body inlet end inner cavity 13 and the body outlet end inner cavity 10 of the piston are connected through the pipeline 18, the first valve 19 and the second valve 57, when liquid flows from the body outlet end inner cavity 10 to the body inlet end inner cavity 13, the first valve 19 on the side of the body inlet end inner cavity 13 is closed, the second valve 57 on the side of the body outlet end inner cavity 10 is opened, the liquid in the body outlet end inner cavity 10 enters the inner cavity 9 of the piston, the liquid in the inner cavity 9 of the piston cannot flow into the inner cavity 13 of the valve body through the pipeline 18 and the first valve 19 on the side of the inlet end inner cavity 13, the liquid pressure in the inner cavity 9 of the piston is the same as the liquid pressure in the body outlet end inner cavity 10, as long as the whole weight of the piston 55 vertically and the extending end surface 7 below the piston can overcome the resistance caused by the elastic maintaining of the friction between the outer ring 12 of the sealing ring and the sliding contact seal of the inner ring 4 of the piston cylinder, because the outer ring 12 of the sealing ring 6 has the elasticity which keeps the contact and the sealing with the inner ring 4 of the piston cylinder in the elasticity is extremely small when the sealing ring is not pressurized by liquid, the resistance caused by friction is small, the piston 55 can move downwards under the action of dead weight, the extending end surface 7 below the piston is matched with the body outlet end inner cavity spigot 8 after the piston 55 moves downwards to seal and cut off the liquid in the valve body outlet end inner cavity 10 to flow to the body inlet end inner cavity 13, the valve is closed, and the two-way closing of the K-type liquid control valve of the diaphragm-free shaft rod shaft sleeve spring is realized.
Example 3
The piston cylinder inner ring 4 is processed on the cover 1, the body 3 and the covers 1 and 3, the processing mode is one of three, the sealing ring groove 5 is processed on the piston 55, the number of the processed sealing ring grooves 5 is 1 to more than 1, the number of the installed sealing rings 6 is the same as that of the processed piston sealing ring grooves 5, the types of the installed sealing rings are matched, the covers 1 and the body 3 are fixedly connected into a whole by screws 21, and the sealing is sealed by sealing strips 22, as shown in fig. 9, 10 and 11.
Example 4
The piston cylinder is characterized in that a seat 2 is additionally arranged between the cover 1 and the body 3, the piston cylinder inner ring 4 is processed on the seat 2, the cover 1 and the seat 2, the seat 2 and the body 3, the cover 1, the seat 2 and the body 3, one of five processing modes is selected, the sealing ring groove 5 is processed on the piston 55, the number of the processed sealing ring grooves 5 is 1-1, the number of the installed sealing rings 6 is the same as that of the processed piston sealing ring grooves 5, the types of the installed sealing rings are matched, the cover 1, the seat 2 and the body 3 are fixedly connected into a whole by screws 21, and the sealing is sealed by a sealing strip 22, as shown in fig. 12, 13, 14, 15 and 16.
Example 5
The diaphragm-free shaft sleeve spring K-type liquid control valve is characterized in that a piston cylinder inner ring 4 is processed on a T-shaped piston cylinder inner ring seat 23, a seal ring groove 5 is processed on a piston 55, the number of the processed seal ring grooves 5 is 1-1, the number of the installed seal rings 6 is the same as that of the processed piston seal ring grooves 5, the models of the installed seal rings are matched, the T-shaped piston cylinder inner ring seat 2 and a body 3 are fixedly connected into a whole by adopting a screw 24 in a sealing mode, the seal is sealed by adopting a seal strip 22, the cover 1 and the body 3 are fixedly connected into a whole by adopting a screw 21 in a sealing mode, and the seal is sealed by adopting the seal strip 22. In the embodiment, the sealing ring groove 5 is machined on the piston 55, and the machining quantity is 2, as shown in FIG. 17.
Example 6
The K-type liquid control valve is characterized in that a II-type piston cylinder inner ring seat 25 is additionally arranged between the cover 1 and the body 3, a piston cylinder inner ring 4 is machined on the II-type piston cylinder inner ring seat 25, a sealing ring groove 5 is machined on a piston 55, the number of the machined sealing ring grooves 5 is 1 to more than 1, the number of the installed sealing rings 6 is the same as that of the machined piston sealing ring grooves 5, the models of the installed sealing rings are matched, the cover 1, the II-type piston cylinder inner ring seat 25 and the body 3 are fixedly connected into a whole by screws 21, and the sealing is sealed by a sealing strip 22. In the embodiment, the sealing ring groove 5 is machined on the piston 55, and the machining quantity is 2, as shown in FIG. 18.
Example 7
The K-type liquid control valve is characterized in that 1 cut-off port 26 is arranged above or below the inner ring 4 of the piston cylinder, the ring plane of the cut-off port 26 is parallel to the ring plane of the inner ring 4 of the piston cylinder in the interval and the center line position of the cut-off port is the same, an upper outwards extending part 27 of the sealing ring groove 5 or a lower end surface 28 of the sealing ring groove 5 is matched and sealed with the cut-off port 26 after the piston 55 moves downwards, meanwhile, the lower extending end surface 7 of the piston is matched and sealed with the body outlet end inner cavity stop port 8, the upper outwards extending part 27 of the sealing ring groove 5 is provided with a first sealing surface 29, the lower end surface 28 of the sealing ring groove 5 is provided with a second sealing surface 30, the cover 1 and the body 3 are fixedly connected into a whole by screws 21, and the sealing is sealed by adopting a sealing strip 22. In the embodiment, the sealing ring groove 5 is machined on the piston 55, and the machining quantity is 2, as shown in fig. 19 and 20.
Example 8
The K-shaped liquid control valve of the diaphragm-free shaft sleeve spring is characterized in that a seat 2 is additionally arranged between a cover 1 and a body 3, a cut-off opening 26 is formed in the seat 2, the ring plane of the cut-off opening 26 is parallel to the ring plane of an inner ring 4 of a piston cylinder in interval, the center line position of the cut-off opening is the same, an upward outward extending part 27 of a piston sealing ring groove 5 or a lower end face 28 of the sealing ring groove 5 is matched and sealed with the cut-off opening 26 after a piston 55 moves downwards, meanwhile, a piston lower extending end face 7 is matched and sealed with a body outlet end inner cavity cut-off opening 8, the upward outward extending part 27 of the sealing ring groove 5 is provided with a first sealing face 29, a lower end face 28 of the sealing ring groove 5 is provided with a second sealing face 30, the cover 1, the seat 2 and the body 3 are fixedly connected into a whole by screws 21, and the sealing is sealed by adopting a sealing strip 22. In the embodiment, the sealing ring groove 5 is machined on the piston 55, and the machining quantity is 1, as shown in fig. 21 and 22.
Example 9
According to the diaphragm-free shaft sleeve spring K-type liquid control valve, a shaft rod 31 is mounted on the cover 1 and extends into an inner cavity 9 of a piston, the contact position between the shaft rod 31 and the cover 1 is sealed, and the shaft rod 31 can move up and down through a rotating hand wheel 32. As shown in fig. 23, as shown in fig. 24.
Further details of example 1, example 2, example 3, example 4, example 5, example 6, example 7, example 8 and example 9 are as follows:
detailed description 1:
when the sealing ring 6 is installed, the sealing ring 6 needs to be installed according to the flowing direction of liquid, under the working condition, the liquid only needs to flow from the inner cavity 13 of the body inlet end to the inner cavity 10 of the body outlet end, the direction of the sealing ring expansion port 17 faces to the inner cavity 9 of the piston, under the working condition, the liquid only needs to flow from the inner cavity 10 of the body outlet end to the inner cavity 13 of the body inlet end, and the direction of the sealing ring expansion port 17 faces to the opposite direction of the inner cavity 9 of the piston; the working condition needs the liquid to flow in two directions, and when the sealing ring 6 is installed, the sealing ring 6 facing the inner cavity 9 of the piston needs to be provided with sealing ring expansion ports 17 in two directions; the working condition only requires that the K-shaped liquid control valve without the diaphragm shaft sleeve spring is opened and closed in one way, the number of the mounting sealing rings 6 is 1 to more than 1, if the K-shaped liquid control valve needs to be opened and closed in two directions, the number of the mounting sealing rings 6 is 2 to more than 2; through the processing structure of different piston seal ring grooves 5 and the assembling form of the seal ring 6, the demands of various working conditions on the K-shaped liquid control valve of the diaphragm-free shaft sleeve spring can be met.
Detailed description 2:
when the piston 55 and the piston lower extension end face 7 are vertically connected and fixed into a whole, the direction of the piston inner diameter opening 56 of the piston 55 is towards the inner cavity 9 of the piston or opposite to the inner cavity 9 of the piston, so that the requirement of the K-type liquid control valve of the diaphragm-free shaft sleeve spring can be met.
Description of the details 3:
the K-type liquid control valve without the diaphragm shaft sleeve spring has the structural forms shown in figures 17 and 18, so that the oil seal seat and the piston of the valve can be replaced in a set, and other parts of the K-type liquid control valve without the diaphragm shaft sleeve spring do not need to be replaced after the piston and the oil seal seat are damaged. Due to the unique manufacturing and assembling method, the maintenance is extremely convenient, and the replacement by professional technicians is not needed, so that the service life of the K-type liquid control valve without the diaphragm shaft sleeve and the spring can be basically the same as that of a pipeline.
Description of the details 3:
the diaphragm-free shaft sleeve spring K-type liquid control valve has the structural forms shown in figures 19, 20, 21 and 22, so that the sealing effect of the valve can be better.
The working principle is as follows:
1. as shown in fig. 19 and 21, in the upper double-stop valve of the K-type liquid control valve without the diaphragm shaft sleeve spring, liquid flows from the body inlet end inner cavity 13 to the body outlet end inner cavity 10, the upper end surface of the piston extends outwards 27 to be matched and sealed with the stop port 26 after the piston 55 moves downwards, meanwhile, the lower extending end surface 7 of the piston is matched and sealed with the body outlet end inner cavity stop port 8 to cut off the liquid flowing from the body inlet end inner cavity 13 to the body outlet end inner cavity 10, and the valve is closed; a cut-off opening 26 is processed above a sealing ring groove 5, when an upper end surface outward extension part 27 of the piston is matched and sealed with the cut-off opening 26 after the piston 55 moves downwards, liquid in an inner cavity 9 of the piston is sealed at the position, and due to the fact that the cut-off opening is sealed, the seal abrasion of the cut-off opening is extremely small, the seal is better along with the increase of using time, liquid which does not leak can permeate into an inner cavity 10 of the body outlet end, and therefore the valve is completely sealed without permeation.
2. As shown in fig. 20 and 22, in the lower double-stop valve of the K-type liquid control valve without the diaphragm shaft sleeve spring, the liquid flows from the body inlet end inner cavity 13 to the body outlet end inner cavity 10, the lower end surface 28 of the piston is matched and sealed with the stop port 26 after the piston 55 moves downwards, meanwhile, the lower extension end surface 7 of the piston is matched and sealed with the body outlet end inner cavity stop port 8 to cut off the liquid flowing from the body inlet end inner cavity 13 to the body outlet end inner cavity 10, and the valve is closed; a cut-off port 26 is processed below the sealing ring groove 5, when the lower end surface 28 of the piston is matched and sealed with the cut-off port 28 after the piston 55 moves downwards, the liquid in the inner cavity 9 of the piston is sealed at the position, because the cut-off port is sealed, the abrasion of the seal of the cut-off port is extremely small, and the seal is better along with the increase of the using time, the liquid which does not leak can permeate into the inner cavity 10 of the body outlet end, and the valve is completely sealed without permeation.
Detailed description 4:
if the flow rate is to be statically adjusted, the structure forms of the figure 23 and the figure 24 are adopted.
The working principle is as follows:
in the fluid control valve of K-shaped liquid control valve without diaphragm shaft sleeve spring as shown in fig. 23 and 24, the piston 55 has two installation forms, and the piston inner diameter opening 56 of the piston 55 placed in the sealing ring 6 is in the direction towards the inner cavity 9 of the piston or in the direction opposite to the inner cavity 9 of the piston; the shaft rod 31 can move up and down by rotating the hand wheel 32, the shaft rod 31 is moved to a set position, the piston 55 can be propped by the shaft rod 31 after rising and can not rise any more, so the extending end surface 7 below the piston and the body outlet end inner cavity seam allowance 8 can be kept at a set fixed opening, the flow between the extending end surface 7 below the piston and the body outlet end inner cavity seam allowance 8 is limited, and static flow limitation is realized.
Example 10
The valve of the K-type liquid control valve without the diaphragm shaft sleeve spring is provided with an electric actuator 54, and the valve is opened and closed by the electric actuator 54, as shown in fig. 25 and 26.
The specific description is as follows:
the electric actuator 54 is used for opening and closing the valve, and the electric actuator 54 replaces manual operation for opening and closing the valve, so that the control of the K-type liquid control valve of the diaphragm-free shaft rod shaft sleeve spring can be realized remotely: once the power is removed, the electric actuator 54 can be removed and the valve opened and closed with conventional tools.
Example 11
The one-way single-shutoff valve of the K-shaped liquid control valve without the diaphragm, the shaft sleeve and the spring is characterized in that the inner cavity 9 of the piston is connected with a three-way valve 33 through a pipeline 18, one outlet of the three-way valve 33 is connected with the inner cavity 13 at the inlet end of the valve body through the pipeline 18, and the other outlet is connected with the inner cavity 10 at the outlet end of the valve body through the pipeline 18, as shown in fig. 27.
The specific description is as follows: this embodiment can be used to assemble pipes and valves by using any one of the basic structure of the present invention and the machining structure of the seal groove and the seal assembling structure, as shown in fig. 27.
The working principle is as follows:
1. when liquid flows from the internal cavity 13 of the body inlet end to the internal cavity 10 of the body outlet end, the switch position of the three-way ball valve 33 is arranged in the internal cavity 9 of the piston and the internal cavity 13 of the body inlet end to be closed, the internal cavity 9 of the piston and the internal cavity 10 of the body outlet end are opened, the liquid in the internal cavity 13 of the body inlet end cannot enter the internal cavity 9 of the piston through the pipeline 18 and the three-way ball valve 33, meanwhile, the liquid in the internal cavity 9 of the piston can enter the internal cavity 9 of the body outlet end through the three-way ball valve 33 and the pipeline 18, the piston 55 cannot be pressed at the moment, the extending end face 7 below the piston leaves the spigot 8 of the internal cavity of the body outlet end under the pushing of the liquid in the internal cavity 13 of the body inlet end, the liquid in the internal cavity 13 of the body inlet end enters the internal cavity 10 of the body outlet end through the spigot 8 of the internal cavity of the body outlet end, and the valve is opened; the switch position of the three-way ball valve 33 is arranged in the inner cavity 9 of the piston and the inner cavity 13 of the body inlet end to be opened, the inner cavity 9 of the piston and the inner cavity 10 of the body outlet end to be closed, liquid in the inner cavity 13 of the body inlet end enters the inner cavity 9 of the piston through the pipeline 18 and the three-way ball valve 33, meanwhile, the liquid in the inner cavity 9 of the piston cannot enter the inner cavity 10 of the body outlet end through the three-way ball valve 33 and the pipeline 18, the piston 55 moves downwards under pressure because the area of the outer ring of the piston 55 is larger than that of the inner ring of the spigot 8 of the inner cavity of the body outlet end, the extending end surface 7 below the piston is matched with the spigot 8 of the inner cavity of the body outlet end after the piston 55 moves downwards to cut off the liquid flowing from the inner cavity 13 of the body inlet end to the inner cavity 10 of the body outlet end in a sealing mode, and the valve is closed.
2. When liquid flows from the inner cavity 10 of the body outlet end to the inner cavity 13 of the body inlet end, the switch position of the three-way ball valve 33 is arranged between the inner cavity 9 of the piston and the inner cavity 13 of the body inlet end to be closed, the inner cavity 9 of the piston and the inner cavity 10 of the body outlet end are opened, the liquid in the inner cavity 10 of the valve body outlet end enters the inner cavity 9 of the piston through the pipeline 18 and the three-way ball valve 33, meanwhile, the liquid in the inner cavity 9 of the piston cannot enter the inner cavity 13 of the valve body through the three-way ball valve 33 and the pipeline 18, when the liquid pressure in the inner cavity 9 of the piston is the same as the liquid pressure in the inner cavity 10 of the body outlet end, the piston 55 moves downwards under the action of the self weight, the extending end face 7 below the piston is matched with the spigot 8 of the inner cavity of the body outlet end after the piston 55 moves downwards to seal and cut off the liquid flowing from the inner cavity 10 of the body outlet end to the inner cavity 13 of the body inlet end, and the valve is closed; the opening and closing position of the three-way ball valve 33 is arranged in the inner cavity 9 of the piston and the inner cavity 13 of the body inlet end to be opened, the inner cavity 9 of the piston and the inner cavity 10 of the body outlet end are closed, liquid in the inner cavity 10 of the body outlet end cannot enter the inner cavity 9 of the piston through the pipeline 18 and the three-way ball valve 33, meanwhile, liquid in the inner cavity 9 of the piston enters the inner cavity 13 of the body inlet end through the three-way ball valve 33 and the pipeline 18, because the area of the outer ring of the piston 55 is larger than the area of the inner ring of the spigot 8 of the inner cavity of the body outlet end, the piston 55 is pushed by the liquid in the inner cavity 10 of the body outlet end to move upwards, the extending end face 7 below the piston leaves the spigot 8 of the inner cavity of the body outlet end when the piston 55 moves upwards, the liquid in the inner cavity 10 of the body outlet end flows to the inner cavity 13 of the body inlet end through the spigot 8 of the inner cavity of the body outlet end, and the valve is opened.
3. The specific description is as follows: when liquid flows from the body inlet end inner cavity 13 to the body outlet end inner cavity 10 or when liquid flows from the body outlet end inner cavity 10 to the body inlet end inner cavity 13, after the three-way ball valve 33 is operated, the liquid flow direction can only be towards one direction, and the other direction is not, so that the three-way ball valve only has the functions of one-way flow and one-way flow interception.
Example 12
In the one-way double-throttle valve for the K-shaped liquid control valve without the diaphragm, the inner cavity 9 of the piston is connected with a three-way valve 33 through a pipeline 18, one outlet of the three-way valve 33 is connected into an inner cavity 13 through a pipeline 18 and a check valve 34, and the other outlet is connected into an inner cavity 10 through a pipeline 18, as shown in fig. 28.
The specific description is as follows: this embodiment can be used to assemble pipes and valves by using any one of the basic structure of the present invention, the machining structure of the seal groove and the seal assembling structure, as shown in fig. 28.
1. When liquid flows from the inner cavity 13 of the body inlet end to the inner cavity 10 of the body outlet end, the switch position of the three-way ball valve 33 is arranged in the inner cavity 9 of the piston and the inner cavity 13 of the body inlet end to be closed, the inner cavity 9 of the piston and the inner cavity 10 of the body outlet end are opened, the liquid in the inner cavity 13 of the body inlet end cannot enter the inner cavity 9 of the piston through the pipeline 18, the check valve 34 and the three-way ball valve 33, meanwhile, the liquid in the inner cavity 9 of the piston can enter the inner cavity 10 of the body outlet end through the three-way ball valve 33 and the pipeline 18, at the moment, the piston 55 cannot be pressed, the end face 7 extending below the piston leaves the spigot 8 of the inner cavity 13 of the body outlet end under the pushing of the liquid in the inner cavity 13 of the body inlet end, the liquid in the inner cavity 13 of the body inlet end enters the inner cavity 10 of the body outlet end through the spigot 8 of the inner cavity of the body outlet end, and the valve is opened; the switch position of the three-way ball valve 33 is arranged in the inner cavity 9 of the piston and the inner cavity 13 of the body inlet end to be opened, the inner cavity 9 of the piston and the inner cavity 10 of the valve body outlet end to be closed, liquid in the inner cavity 13 of the body inlet end enters the inner cavity 9 of the piston through the pipeline 18, the check valve 34 and the three-way ball valve 33, meanwhile, the liquid in the inner cavity 9 of the piston cannot enter the inner cavity 10 of the body outlet end through the three-way ball valve 33 and the pipeline 18, the piston 55 moves downwards under pressure because the area of the outer ring of the piston 55 is larger than that of the inner ring of the spigot 8 of the inner cavity of the body outlet end, the extending end face 7 below the piston matches with the spigot 8 of the inner cavity of the body outlet end to seal and cut off the liquid flowing from the inner cavity 13 of the body inlet end to the inner cavity 10 of the body outlet end after the piston 55 moves downwards, and the valve is closed.
2. When liquid flows from the body outlet end inner cavity 10 to the body inlet end inner cavity 13, the switch position of the three-way ball valve 33 is arranged between the inner cavity 9 of the piston and the body inlet end inner cavity 13 and the inner cavity 9 of the piston and the body outlet end inner cavity 10 are opened, the liquid in the body outlet end inner cavity 10 enters the inner cavity 9 of the piston through the pipeline 18 and the three-way ball valve 33, meanwhile, the liquid in the inner cavity 9 of the piston cannot enter the body inlet end inner cavity 13 through the three-way ball valve 33, the check valve 34 and the pipeline 18, when the liquid pressure in the inner cavity 9 of the piston is the same as the liquid pressure in the body outlet end inner cavity 10, the piston 55 moves downwards under the action of self weight, the extending end face 7 below the piston is matched with the body outlet end inner cavity spigot 8 after the piston 55 moves downwards to seal and cut off the liquid flowing from the body outlet end inner cavity 10 to the body inlet end inner cavity 13, and the valve is closed; the switch position of the three-way ball valve 33 is arranged in the inner cavity 9 of the piston and the inner cavity 13 of the body inlet end to be opened, the inner cavity 9 of the piston and the inner cavity 10 of the body outlet end are closed, liquid in the inner cavity 10 of the body outlet end cannot enter the inner cavity 9 of the piston through the pipeline 18 and the three-way ball valve 33, and liquid in the inner cavity 9 of the piston cannot enter the inner cavity 13 of the body inlet end through the three-way ball valve 33, the check valve 34 and the pipeline 18, so that the piston 55 cannot be pressed to move, the valve cannot be opened, and the purposes of one-way communication and two-way flow stopping are achieved.
Example 13
The non-diaphragm shaft sleeve spring K-type liquid control valve is a check valve and a shutoff valve, the inner cavity 9 of the piston is connected with the inlet end inner cavity 13 through the pipeline 18 and the inlet end two-way valve 35, and the inner cavity 9 of the piston is connected with the outlet end inner cavity 10 through the pipeline 18 and the outlet end two-way valve 36, as shown in fig. 29.
The specific description is as follows: this embodiment can be used to assemble pipes and valves by using any one of the basic structure of the present invention and the machining structure of the seal ring groove and the seal ring assembling structure, as shown in fig. 29.
1. When liquid flows from the body inlet end inner cavity 13 to the body outlet end inner cavity 10, the inlet end two-way valve 35 is closed, the outlet end two-way valve 36 is opened, the liquid in the body inlet end inner cavity 13 cannot flow into the inner cavity 9 of the piston, the liquid in the inner cavity 9 of the piston can flow into the body outlet end inner cavity 10 through the pipeline 18 and the outlet end two-way valve 36, at the moment, the piston 55 cannot be pressed, the extending end surface 7 below the piston leaves the body outlet end inner cavity spigot 8 under the pushing of the liquid in the valve body inlet end inner cavity 13, the liquid in the body inlet end inner cavity 13 enters the body outlet end inner cavity 10 through the valve body outlet end inner cavity spigot 8, and the valve is opened; when liquid flows from the inner cavity 10 of the body outlet end to the inner cavity 13 of the valve body inlet end, the liquid pressure in the inner cavity 9 of the piston depends on the liquid in the inner cavity 10 of the body outlet end to enter the inner cavity 9 of the piston, when the liquid pressure in the inner cavity 9 of the piston is the same as the liquid pressure in the inner cavity 10 of the body outlet end, the piston 55 can move downwards under the action of self weight, the extending end surface 7 below the piston is matched with the spigot 8 of the inner cavity of the body outlet end after the piston 55 moves downwards to seal and cut off the liquid in the inner cavity 10 of the valve body outlet end from flowing to the inner cavity 13 of the body inlet end, and the valve is closed to achieve the purpose of non-return.
2. When liquid flows from the body outlet end inner cavity 10 to the body inlet end inner cavity 13, the outlet end two-way valve 36 is closed, the inlet end two-way valve 35 is opened, the liquid in the body outlet end inner cavity 10 cannot flow into the inner cavity 9 of the piston, the liquid in the inner cavity 9 of the piston can flow into the valve body inlet end inner cavity 13 through the pipeline 18 and the inlet end two-way valve 35, because the area of the outer ring of the piston 55 is larger than the area of the inner ring of the body outlet end inner cavity spigot 8, the piston 55 is pushed by the liquid in the body outlet end inner cavity 10 to move upwards, the piston lower extending end face 7 is separated from the body outlet end inner cavity spigot 8 when the piston 55 moves upwards, the liquid in the body outlet end inner cavity 10 flows into the body inlet end inner cavity 13 through the body outlet end inner cavity spigot 8, and the valve is opened; when liquid flows from the inner cavity 13 of the body inlet end to the inner cavity 10 of the body outlet end, the liquid pressure in the inner cavity 9 of the piston depends on the liquid in the inner cavity 13 of the body inlet end entering the inner cavity 9 of the piston, when the pressure in the inner cavity 9 of the piston is the same as the inner cavity 13 of the body inlet end, because the area of the outer ring of the piston 55 is larger than that of the inner ring of the spigot 8 of the inner cavity of the body outlet end, the piston 55 can move downwards under the action of the liquid pressure, the extending end surface 7 below the piston is matched with the spigot 8 of the inner cavity of the valve body outlet end after the piston 55 moves downwards to seal and cut off the liquid in the inner cavity 13 of the body inlet end flowing to the inner cavity 8 of the body outlet end, and the valve is closed, so that the purpose of non-return is achieved.
3. The specific description is as follows: when liquid flows from the body inlet end inner cavity 13 to the body outlet end inner cavity 10 or when liquid flows from the body outlet end inner cavity 10 to the body inlet end inner cavity 13, the inlet end two-way valve 35 and the outlet end two-way valve 36 are operated, one of the two-way valves is opened, the other two-way valve is closed, and one liquid flow direction is closed, so that the liquid flow stopping and intercepting functions are achieved.
Example 14
The diaphragm-free shaft sleeve spring K-shaped liquid control valve bidirectional single-shutoff valve is characterized in that an inner cavity 9 of a piston is connected with an inlet inner cavity 13 through a pipeline 18, an inlet two-way valve 35 and a semi-closed check valve 37, and the inner cavity 9 of the piston is connected with an outlet inner cavity 10 through the pipeline 18, an outlet two-way valve 36 and the semi-closed check valve 37, as shown in fig. 30.
The specific description is as follows: this embodiment can be used to assemble pipes and valves by using any one of the basic structure of the present invention, the machining structure of the seal groove and the seal assembling structure, as shown in fig. 30.
1. When liquid flows from the body inlet end inner cavity 13 to the body outlet end inner cavity 10, the inlet end two-way valve 35 and the outlet end two-way valve 36 are opened, the semi-closed check valve 37 arranged on the pipeline 18 of the body inlet end inner cavity 13 is closed in a non-return way by a half, the semi-closed check valve 37 arranged on the pipeline 18 of the body outlet end inner cavity 10 is fully opened, the liquid in the body inlet end inner cavity 13 enters the inner cavity 9 of the piston through the pipeline 18, the semi-closed check valve 37, the inlet end two-way valve 35 and the pipeline 18, because the semi-closed check valve 37 arranged on the pipeline 18 of the body outlet end inner cavity 10 is fully opened, the liquid amount entering the inner cavity 9 of the piston is smaller than the amount flowing to the body outlet end inner cavity 10, the piston 55 cannot be pressed, the extending end surface 7 below the piston leaves the body outlet end inner cavity spigot 8 under the push of the liquid in the body inlet end inner cavity 13, and the liquid in the body inlet end inner cavity 13 enters the body outlet end inner cavity 10 through the body outlet end inner cavity spigot 8, opening a valve; opening the inlet two-way valve 35, closing the outlet two-way valve 36, wherein at this time, half-closed check valve 37 mounted on the pipeline 18 of the valve body inlet end inner cavity 13 is half of check closed without all check, so that the liquid in the valve body inlet end inner cavity 13 can enter the inner cavity 9 of the piston through the half-closed check valve 37, the inlet two-way valve 35 and the pipeline 18, because the outlet two-way valve 36 is closed, the liquid in the valve body inlet end inner cavity 13 can not flow into the valve body outlet end inner cavity 10, the area of the outer ring of the piston 55 is larger than that of the inner ring of the valve body outlet end inner cavity spigot 8, the piston 55 moves downwards under pressure, the extending end face 7 below the piston is matched with the valve body outlet end inner cavity spigot 8 after the piston 55 moves downwards to seal and cut off the liquid in the valve body inlet end inner cavity 13 flowing to the valve body outlet end inner cavity 10, and the valve is closed.
2. When liquid flows from the body outlet end inner cavity 10 to the body inlet end inner cavity 13, the inlet end two-way valve 35 and the outlet end two-way valve 36 are opened, the semi-closed check valve 37 arranged on the pipeline 18 of the body outlet end inner cavity 10 is closed in a non-return way by a half, the semi-closed check valve 37 arranged on the pipeline 18 of the body inlet end inner cavity 13 is fully opened, the liquid in the body outlet end inner cavity 10 enters the inner cavity 9 of the piston through the pipeline 18, the semi-closed check valve 37, the outlet end two-way valve 36 and the pipeline 18, because the semi-closed check valve 37 arranged on the pipeline 18 of the body inlet end inner cavity 13 is fully opened, the liquid amount entering the inner cavity 9 of the piston is smaller than the amount flowing to the body inlet end inner cavity 13, because the area of an outer ring of the piston 55 is larger than the area of an inner ring of the body outlet end inner cavity spigot 8, the piston 55 is pushed by the liquid of the body outlet end inner cavity 10 to move upwards, the piston lower extending end face 7 leaves the body outlet end inner cavity spigot 8 when the piston 55 moves upwards, the liquid in the inner cavity 10 of the body outlet end flows into the inner cavity 13 of the body inlet end through the spigot 8 of the inner cavity of the body outlet end, and the valve is opened; closing the inlet two-way valve 35, opening the outlet two-way valve 36, and at this time, half of the half-closed check valve 37 mounted on the pipeline 18 of the valve body outlet inner cavity 10 is closed, but not completely closed, so that the liquid in the valve body outlet inner cavity 10 can enter the inner cavity 9 of the piston through the pipeline 18, the half-closed check valve 37, the outlet two-way valve 36 and the pipeline 18, because the inlet two-way valve 35 is closed, the liquid in the body outlet inner cavity 10 can not flow to the body inlet inner cavity 13 from the inner cavity 9 of the piston, when the liquid pressure in the inner cavity 9 of the piston is the same as the liquid pressure in the body outlet inner cavity 10, the piston 55 can move downwards under the action of the self weight, the extending end surface 7 below the piston 55 moves downwards and is matched with the body outlet inner cavity spigot 8 to seal and cut off the liquid in the body outlet inner cavity 10 to flow to the valve body inlet inner cavity 13, and the valve is closed.
3. The specific description is as follows: when liquid flows from the body inlet end inner cavity 13 to the body outlet end inner cavity 10 or when liquid flows from the body outlet end inner cavity 10 to the body inlet end inner cavity 13, the inlet end two-way valve 35 and the outlet end two-way valve 36 are opened, the liquid can pass through the valves in two directions, one of the two-way valves is closed, the liquid in one direction can be closed, and therefore the valve has the functions that the liquid can pass through the valves in two directions and is intercepted in one direction.
Example 15
The inner cavity 9 of the piston is connected with a tee joint I39 through a two-way valve I38, two outlets of the tee joint I39 are respectively provided with a check valve 34, an outlet of the check valve 34 is connected into the inner cavity 13 through a pipeline 18 connector, an outlet of the check valve 34 is connected into the inner cavity 10 through a pipeline 18 connector, the inner cavity 9 of the piston is connected with a tee joint II 41 through a two-way valve II 40, two outlets of the tee joint II 41 are respectively provided with a check valve 34, an outlet of the check valve 34 is connected with the inner cavity 13 of the valve body through a pipeline 18, and an outlet of the check valve 34 is connected into the inner cavity 10 through a pipeline 18 connector, as shown in figure 31.
The specific description is as follows: this embodiment can be used to assemble pipes and valves by using any one of the basic structure of the present invention, the machining structure of the seal groove and the seal assembling structure, as shown in fig. 31.
1. When the liquid flows from the body inlet end inner cavity 13 to the body outlet end inner cavity 10, the two-way valve I38 is closed, the two-way valve II 40 is opened, and in this state, the two-way valve I38 cuts off the liquid in the body inlet end inner cavity 13 and the body outlet end inner cavity 10 which are connected by the three-way valve I39 and enters the inner cavity 9 of the piston; the two-way valve II 40 is in an open state, a three-way valve II 41 connected with the two-way valve II 40 is connected with the inlet end inner cavity 13 through the check valve 34 and the pipeline 18, but the check valve 34 stops the flow of the liquid in the body inlet end inner cavity 13, so that the liquid in the body inlet end inner cavity 13 cannot enter the inner cavity 9 of the piston; the two-way valve II 40 is in an open state, the three-way valve II 41 connected with the two-way valve II 40 does not return liquid in the inner cavity 9 of the slave piston through the check valve 34 and the check valve 34 of the outlet end inner cavity 10 of the connector of the pipeline 18, so that the liquid in the inner cavity 9 of the piston can flow into the body outlet end inner cavity 10 through the two-way valve II 40 and the three-way valve II 41 through the check valve 34 and the pipeline 18, at the moment, the piston 55 cannot be pressed, the extending end face 7 below the piston leaves the body outlet end inner cavity spigot 8 under the pushing of the liquid in the body inlet end inner cavity 13, the liquid in the body inlet end inner cavity 13 enters the body outlet end inner cavity 10 through the body outlet end inner cavity spigot 8, and the valve is opened.
2. When liquid flows from the body outlet end inner cavity 10 to the body inlet end inner cavity 13, the two-way valve I38 is closed, the two-way valve II 40 is opened, and in this state, the two-way valve I38 cuts off the liquid in the body inlet end inner cavity 13 and the body outlet end inner cavity 10 which are connected by the three-way valve I39 to enter the inner cavity 9 of the piston; the two-way valve II 40 is in an open state, a tee joint II 41 connected with the two-way valve II 40 is connected with the inner cavity 10 at the outlet end of the valve body through a check valve 34 and a pipeline 18, but the check valve 34 stops the check of the inner cavity 10 at the outlet end of the valve body, so that liquid in the inner cavity 10 at the outlet end of the valve body cannot enter the inner cavity 9 of the piston; the two-way valve II 40 is in an open state, the three-way valve II 41 connected with the two-way valve II 40 is connected with the check valve 34 of the inlet end inner cavity 13 through the check valve 34 and the pipeline 18, so that the liquid in the inner cavity 9 of the piston can flow into the body inlet end inner cavity 13 through the two-way valve II 40 and the three-way valve II 41 through the check valve 34 and the pipeline 18, the piston 55 is pushed by the liquid in the body outlet end inner cavity 10 to move upwards due to the fact that the area of an outer ring of the piston 55 is larger than that of an inner ring of the body outlet end inner cavity spigot 8, the extending end face 7 below the piston leaves the body outlet end inner cavity spigot 8 when the piston 55 moves upwards, the liquid in the body outlet end inner cavity 10 flows into the body inlet end inner cavity 13 through the body outlet end inner cavity spigot 8, and the valve is opened.
3. When liquid flows from the body inlet end inner cavity 13 to the body outlet end inner cavity 10, the two-way valve I38 is opened, the two-way valve II 40 is closed, in this state, the two-way valve II 40 disconnects the liquid in the body inlet end inner cavity 13 and the body outlet end inner cavity 10 connected by the three-way valve II 41, the two-way valve I38 is in an open state, the three-way valve I39 connected with the two-way valve I38 is connected with the outlet end inner cavity 10 through the check valve 34 and the pipeline 18, but the check valve 34 is used for checking the liquid in the inner cavity 9 of the piston, so the liquid in the body inlet end inner cavity 13 can not enter the body outlet end inner cavity 10, the two-way valve I38 is in an open state, the three-way I39 connected with the two-way valve I38 is connected with the body inlet end inner cavity 13 through the check valve 34 and the pipeline 18, but the check valve 34 is used for checking the liquid in the body inlet end inner cavity 13, so the liquid in the body inlet end inner cavity 13 can enter the inner cavity 9 of the piston, and the area of the inner ring of the outer ring of the piston 55 is larger than the area of the outer ring end inner ring of the body outlet end inner cavity 8, the piston 55 moves downwards under pressure, the extending end face 7 below the piston is matched with the body outlet end inner cavity spigot 8 after the piston 55 moves downwards to seal and cut off the liquid flowing from the body inlet end inner cavity 13 to the body outlet end inner cavity 10, and the valve is closed.
4. When liquid flows from the body inlet end inner cavity 10 to the body inlet end inner cavity 13, the two-way valve I38 is opened, the two-way valve II 40 is closed, in this state, the two-way valve I38 disconnects the liquid in the body inlet end inner cavity 13 and the body outlet end inner cavity 10 connected by the three-way valve I39 and enters the inner cavity 9 of the piston, the two-way valve I38 is in an open state, the three-way valve I39 connected with the two-way valve I38 is connected with the body inlet end inner cavity 13 through the check valve 34 and the pipeline 18, but the check valve 34 stops the liquid in the inner cavity 9 of the piston, therefore, the liquid in the body outlet end inner cavity 10 can not enter the inner cavity 13 of the piston, the two-way valve I38 is in an open state, the three-way I39 connected with the two-way valve I38 is connected with the outlet end inner cavity 10 through the check valve 34 and the pipeline 18, but the check valve 34 does not stop the liquid in the body outlet end inner cavity 10, therefore, the liquid in the body outlet end inner cavity 10 can enter the inner cavity 9 of the piston, when the liquid pressure is the same as the liquid in the body outlet end inner cavity 9 of the piston, the piston 55 moves downwards under the action of self-weight, the extending end face 7 below the piston is matched with the body outlet end inner cavity spigot 8 after the piston 55 moves downwards to seal and cut off liquid flowing from the body outlet end inner cavity 10 to the body inlet end inner cavity 13, and the valve is closed.
5. The specific description is as follows: when liquid flows from the body inlet end inner cavity 13 to the body outlet end inner cavity 10 or when liquid flows from the body outlet end inner cavity 10 to the body inlet end inner cavity 13, the two-way valve I38 is closed, the two-way valve II 40 is opened, and the fluid can flow in two directions; the two-way valve I38 is opened, the two-way valve II 40 is closed, and the valves can be closed in both directions. Therefore, the valve has the functions of enabling liquid to pass through the valve in two directions and stopping the flow in two directions.
Example 16
In the K-shaped liquid control valve float valve without the diaphragm, the inner cavity 9 of the piston is connected with the inlet inner cavity 13 through the pipeline 18 and the inlet two-way valve 35, the inner cavity 9 of the piston is connected with the float valve 42 through the outlet two-way valve 36 and the pipeline 18, and the flange 43 of the inner cavity of the outlet end of the piston is connected with the pipeline 44 to the liquid pool 45, as shown in fig. 32.
The specific description is as follows: this embodiment can adopt any one of the basic structure and the machining structure of the seal groove and the seal assembling structure in the utility model to assemble the pipe and the valve in keeping with the basic principle of the utility model, as shown in fig. 32.
Liquid flows from the body inlet end inner cavity 13 to the body outlet end inner cavity 10, the inlet end two-way valve 35 and the outlet end two-way valve 36 are opened, the opening degree of the inlet end two-way valve 35 is smaller than that of the outlet end two-way valve 36, the liquid in the body inlet end inner cavity 13 enters the inner cavity 9 of the piston through the pipeline 18 and the inlet end two-way valve 35, then enters the air of the liquid pool 45 through the outlet end two-way valve 36, the pipeline 18 and the ball float valve 42, at the moment, the piston 55 cannot be pressed, the extending end face 7 below the piston leaves the body outlet end inner cavity spigot 8 under the pushing of the liquid in the body inlet end inner cavity 13, the liquid in the body inlet end inner cavity 13 enters the body outlet end inner cavity 10 through the body outlet end inner cavity spigot 8, and enters the liquid pool 45 through the pipeline 44 connected with the flange 43 of the body outlet end inner cavity; when the liquid in the liquid pool 45 rises to the float valve 42, the float valve 42 is closed, the liquid in the body inlet end inner cavity 13 enters the inner cavity 9 of the piston through the inlet end two-way valve 35 and the pipeline 18, and then the liquid cannot enter the air in the liquid pool 45 through the outlet end two-way valve 36, the pipeline 18 and the float valve 42, because the area of the outer ring of the piston 55 is larger than the area of the inner ring of the body outlet end inner cavity spigot 8, the piston 55 moves downwards under pressure, the piston lower extension end surface 7 is matched with the body outlet end inner cavity spigot 8 after the piston 55 moves downwards to seal and cut off the liquid flowing from the body inlet end inner cavity 13 to the body outlet end inner cavity 10, and the valve is closed.
Example 17
The diaphragm-free shaft sleeve spring K-type liquid control valve flow limiting valve is also a check valve, an inner cavity 9 of a piston is connected with one outlet of a hand wheel three-way pilot valve 46 through a check valve 34 and a pipeline 18, the other outlet of the hand wheel three-way pilot valve 46 is connected with a liquid inlet end 48 of a pump 47 through the pipeline 18, an inlet of the hand wheel three-way pilot valve 46 is connected with an inlet end inner cavity 13 through the pipeline 18 and an inlet end two-way valve 35 connector, the hand wheel three-way pilot valve 46 is provided with a hand wheel 49, and the inner cavity 9 of the piston is connected with an outlet end inner cavity 10 through the pipeline 18 and an outlet end two-way valve 36 connector, as shown in 33.
The specific description is as follows: this embodiment can be used to assemble pipes, valves, pilot valves, etc. following the basic principle of the present invention, using any one of the basic structures of the present invention, the machining structure of the seal ring groove, and the seal ring assembling structure, as shown in fig. 33.
The working principle is as follows:
1. starting the pump 47, allowing the liquid to flow from the body inlet end inner cavity 13 to the body outlet end inner cavity 10, opening the inlet end two-way valve 35 and the outlet end two-way valve 36, and setting the opening degree of the inlet end two-way valve 35 to be smaller than that of the outlet end two-way valve 36, wherein the piston 55 cannot be pressed, the end surface 7 extending below the piston leaves the body outlet end inner cavity spigot 8 under the pushing of the liquid in the body inlet end inner cavity 13, the liquid in the body inlet end inner cavity 13 enters the body outlet end inner cavity 10 through the body outlet end inner cavity spigot 8, and the valve is opened; the pressure of the inner cavity 10 at the outlet end of the valve body is ensured to be at a set value by adjusting the hand wheel 49 to ensure that the flow rate of the liquid in the inlet end 48 of the pump 47, which enters the hand wheel three-way pilot valve 46 through the pipeline 18, the check valve 34 and the inner cavity 9 of the piston is adjusted; when the liquid flow in the inlet end 48 of the pump 47 changes, the sensing die in the hand wheel three-way pilot valve 46 controls the liquid entering the inner cavity 9 of the piston through the pipeline 18 and the check valve 34, so that the opening degree of the piston 55 changes, the pressure in the inner cavity 10 of the outlet end of the body is ensured not to change along with the change of the liquid flow in the inlet end 48 of the pump 47, and the purpose of flow limitation is achieved.
2. The pump 47 is closed, liquid flows from the body outlet end inner cavity 10 to the body inlet end inner cavity 13, because the check valve 34 performs check on the inner cavity 9 of the piston, the liquid in the inner cavity 9 of the piston cannot flow to the body inlet end inner cavity 13 through the check valve 34, the pipeline 18, the hand wheel three-way pilot valve 46 and the inlet two-way valve 35 and cannot flow to the inlet end 48 of the pump 47 through the pipeline 18, the liquid in the body outlet end inner cavity 10 enters the inner cavity 9 of the piston through the outlet two-way valve 36 through the pipeline 18, when the liquid pressure in the inner cavity 9 of the piston is the same as the liquid pressure in the body outlet end inner cavity 10, the piston 55 moves downwards under the action of self weight, the extending end surface 7 below the piston is matched with the body outlet end inner cavity spigot 8 after the piston 55 moves downwards to seal and cut off the liquid flowing from the body outlet end inner cavity 10 to the body inlet end inner cavity 13, and the valve is closed, so that the purpose of check is achieved.
Example 18
The pressure reducing and stabilizing valve of the K-type liquid control valve without the diaphragm shaft sleeve spring is characterized in that an inner cavity 9 of a piston is connected with one inlet of a two-way valve 50 through a pipeline 18, an outlet of the two-way valve 50 is connected with an outlet end inner cavity 10 through an outlet end two-way valve 36 and a pipeline 18, the inner cavity 9 of the piston is connected with an inlet end inner cavity 13 through a pipeline 18 and an inlet end two-way valve 35, and the top of the two-way valve 50 is provided with a screw 51 as shown in fig. 34.
The specific description is as follows: this embodiment can be used to assemble pipes, valves, pilot valves, etc. following the basic principle of the present invention, using any one of the basic structures of the present invention, the machining structure of the seal ring groove, and the seal ring assembling structure, as shown in fig. 34.
The working principle is as follows:
liquid flows from the body inlet end inner cavity 13 to the body outlet end inner cavity 10, the inlet end two-way valve 35 and the outlet end two-way valve 36 are opened, the opening degree of the inlet end two-way valve 35 is set to be smaller than that of the outlet end two-way valve 36, at the moment, the piston 55 is not pressed, the extending end face 7 below the piston is pushed by the liquid in the body inlet end inner cavity 13 to leave the body outlet end inner cavity spigot 8, the liquid in the body inlet end inner cavity 13 enters the body outlet end inner cavity 10 through the body outlet end inner cavity spigot 8, and the valve is opened; the flow rate of the liquid in the inner cavity 9 of the piston entering the body outlet end inner cavity 10 through the outlet end two-way valve 36 can be set at a value by adjusting the screw rod 51 on the two-way valve 50, so that the liquid pressure of the body outlet end inner cavity 10 is fixed at a set value; when the liquid pressure in the body outlet end cavity 10 changes, the sensing module in the two-way valve 50 can control the flow entering the body outlet end cavity 10 from the cavity 9 of the piston, so that the opening degree of the piston 55 changes along with the change of the liquid pressure in the body outlet end cavity 10, and the purposes of pressure reduction and pressure stabilization are achieved.
Example 19
The pressure relief valve of the K-type liquid control valve without the diaphragm shaft sleeve spring is characterized in that an inner cavity 9 of a piston is connected with one outlet of a three-way pilot valve 52 through a pipeline 18, the other outlet of the three-way pilot valve 52 is connected with an outlet inner cavity 10 through an outlet two-way valve 36 and a pipeline 18 connector, an inlet inner cavity 13 of a body is connected with an inlet of the three-way pilot valve 52 through an inlet two-way valve 35 and the pipeline 18, the inner cavity 9 of the piston is connected with the outlet inner cavity 10 through a two-way valve III 53 and the pipeline 18 connector, and a screw 51 is arranged at the top of the three-way pilot valve 52, as shown in fig. 35.
The specific description is as follows: this embodiment can be used to assemble pipes, valves, pilot valves, etc. in accordance with the basic principle of the present invention, using any one of the basic structures of the present invention, the machining structure of the seal ring groove, and the seal ring assembling structure, as shown in fig. 35.
The working principle is as follows:
1. liquid flows from the body outlet end inner cavity 10 to the body inlet end inner cavity 13, and the inlet end two-way valve 35, the outlet end two-way valve 36 and the two-way valve III 53 are opened; the liquid in the inner cavity 10 of the body outlet end enters the inner cavity 9 of the piston through the pipeline 18 and the two-way valve III 53 and enters the three-way pilot valve 52 through the pipeline 18 and the outlet end two-way valve 36; adjusting the top screw 51 of the three-way pilot valve 52 to a certain position, when the pressure in the body outlet end inner cavity 10 rises to a set value, the liquid pressure in the body outlet end inner cavity 10 enters the three-way pilot valve 52 through the pipeline 18 and the outlet end two-way valve 36 to open the pipeline of the three-way pilot valve 32 connecting the pipeline 15 and the inlet end two-way valve 35, the inner cavity 9 of the communicating piston enters the pipeline of the three-way pilot valve 52 through the pipeline 18 to discharge the liquid in the inner cavity 9 of the piston into the body inlet end inner cavity 13, the liquid quantity of the liquid in the body outlet end inner cavity 10 entering the inner cavity 9 of the piston from the pipeline 18 and the two-way valve III 53 is set to be smaller than the liquid quantity discharged from the inner cavity 9 of the piston into the body inlet end inner cavity 13, because the outer ring area of the piston 55 is larger than the inner ring area of the body outlet end inner cavity spigot 7, the piston 55 is pushed by the liquid in the body outlet end inner cavity 10 to move upwards, the piston lower extension end face 7 leaves the body outlet end inner cavity spigot 8 when the piston 55 moves upwards, the liquid in the inner cavity 10 of the body outlet end flows into the inner cavity 13 of the body inlet end through the spigot 7 of the inner cavity of the body outlet end, and the valve is opened to achieve the purpose of pressure relief.
When the liquid pressure in the valve body outlet end inner cavity 10 is lower than the set value, the liquid pressure in the body outlet end inner cavity 10 can not open the pipeline of the three-way pilot valve 52 connected with the pipeline 18 and the inlet two-way valve 35 through the pipeline 18 and the liquid pressure of the outlet two-way valve 36 and the pipeline of the three-way pilot valve 52 connected with the inner cavity 9 of the piston through the pipeline 18, so that the liquid in the inner cavity 9 of the piston can not be discharged into the body inlet end inner cavity 13, but the liquid in the body outlet end inner cavity 10 can enter the inner cavity 9 of the piston through the pipeline 18 and the two-way valve III 53, when the liquid pressure in the inner cavity 9 of the piston is the same as the liquid pressure in the body outlet end inner cavity 10, the piston 55 moves downwards under the action of the self-weight, the extending end surface 7 below the piston moves downwards and is matched with the valve body outlet end inner cavity stop port 8 after the piston 55 moves downwards to seal and cut off the liquid flowing from the body outlet end inner cavity 10 to the body inlet end inner cavity 13, the valve is closed and no pressure is released.

Claims (16)

1. The utility model provides a no diaphragm shaft sleeve spring K type liquid control valve which characterized in that: the piston comprises a cover (1), a body (3), a piston cylinder inner ring (4), a piston (55), a sealing ring groove (5) arranged on the outer wall surface of the piston (55), a sealing ring (6), an extending end surface (7) below the piston and a body outlet end inner cavity spigot (8); the arrangement mode of the piston cylinder inner ring (4) adopts one of the following seven forms:
is arranged on the position of the piston (55) corresponding to the cover (1),
is arranged at the position of the piston (55) corresponding to the body (3),
at the same time, the piston (55) is arranged at the position corresponding to the cover (1) and the body (3),
is arranged at the position where the piston (55) corresponds to the seat (2), wherein the seat (2) is positioned between the cover (1) and the body (3),
at the same time, the piston (55) is arranged at the position corresponding to the cover (1) and the seat (2),
at the same time, the piston (55) is arranged at the position corresponding to the seat (2) and the body (3),
the piston (55) is arranged at the position corresponding to the cover (1), the seat (2) and the body (3);
the sealing ring (6) is arranged in the sealing ring groove (5), the piston (55) is arranged in the inner ring (4) of the piston cylinder, the piston (55) and the extending end surface (7) below the piston form a whole, and the cover (1) and the body (3) or the cover (1), the seat (2) and the body (3) are sealed into a whole;
the inner ring (11) of the sealing ring is sealed with the sealing ring groove (5), and the outer ring (12) of the sealing ring is statically sealed and slidably sealed with the inner ring (4) of the piston cylinder, so that the inner cavity (9) of the piston is sealed with the inner cavity (10) of the body outlet end;
the body (3) is provided with a body inlet end inner cavity (13) and a body outlet end inner cavity (10), and the extending end face (7) below the piston is matched and sealed with a body outlet end inner cavity spigot (8) after the piston (55) moves, so that the body inlet end inner cavity (13) and the body outlet end inner cavity (10) are sealed.
2. The diaphragm-free shaft sleeve spring K-type liquid control valve of claim 1, wherein:
the cross section of the piston cylinder inner ring (4) is circular, the cross section of the piston (55) is circular, the longitudinal section of the piston is U-shaped (20), the cross section of the sealing ring groove (5) is circular, the longitudinal section of the sealing ring groove is concave (14), the position of a center line of the piston cylinder inner ring (4) is the same as that of the center line of the piston (55), the cross section of the sealing ring (6) is circular, the longitudinal section of the sealing ring is V-shaped (15), and the cross section of the outlet end inner cavity spigot (8) is circular.
3. The diaphragm-free shaft sleeve spring K-type liquid control valve of claim 2, wherein:
the inner diameter of the outlet end inner cavity spigot (8) is smaller than the outer diameter of the piston (55), the circle plane of the piston cylinder inner ring (4) is parallel to the circle plane of the body outlet end inner cavity spigot (8) in interval and the center line position is the same, the center line position of the circle plane of the piston cylinder inner ring (4) is the same as the center line position of the piston (55) arranged in the piston cylinder inner ring (4), the outer ring (12) of the sealing ring (6) is required to be contacted with the piston cylinder inner ring (4), the direction of the piston inner diameter opening (56) of the piston (55) faces towards the inner cavity (9) of the piston or the opposite direction of the inner cavity (9) of the piston, and the piston (55) and the piston lower extending end face (7) are vertically connected and fixed into a whole; the inner ring (11) of the sealing ring and the outer ring (12) of the sealing ring have elastic retention, once the sealing ring expansion opening (17) is pressed by liquid in the direction, the sealing ring (6) expands and stretches along with the increase and decrease of the hydraulic pressure, and if the sealing ring expansion opening (17) is pressed by the liquid in the opposite direction, the sealing ring (6) cannot expand and stretch along with the increase and decrease of the hydraulic pressure; the direction of the expansion opening (17) of the sealing ring faces towards the inner cavity (9) of the piston or the direction opposite to the inner cavity (9) of the piston.
4. The diaphragm-free shaft sleeve spring K-type liquid control valve of claim 1, wherein:
the piston cylinder inner ring (4) is arranged on a T-shaped piston cylinder inner ring seat (23), the number of the sealing rings (6) is the same as that of the piston sealing ring grooves (5) to be processed, the sealing rings are matched in type, the T-shaped piston cylinder inner ring seat (23) and the body (3) are sealed and connected into a whole by adopting a fastening piece, and the cover (1) and the body (3) are fixedly connected into a whole by adopting a screw (21) in a sealing connection manner.
5. The diaphragm-free shaft sleeve spring K-type liquid control valve of claim 1, wherein:
the piston cylinder inner ring seat is characterized in that a II-type piston cylinder inner ring seat (25) is arranged between the cover (1) and the body (3), the piston cylinder inner ring (4) is arranged on the II-type piston cylinder inner ring seat (25), the number of the sealing rings (6) is the same as that of the piston sealing ring grooves (5) to be processed, the sealing rings are matched in model, and the cover (1), the II-type piston cylinder inner ring seat (25) and the body (3) are sealed and connected into a whole by fasteners.
6. The diaphragm-free shaft sleeve spring K-type liquid control valve of claim 1, wherein:
the piston cylinder is characterized in that 1 cut-off opening (26) is arranged above or below the piston cylinder inner ring (4), the ring plane of the cut-off opening (26) is parallel to the ring plane of the piston cylinder inner ring (4) in interval and the center line position is the same, an upward extending part (27) of the sealing ring groove (5) or a lower end face (28) of the sealing ring groove (5) is matched and sealed with the cut-off opening (26) after the piston (55) moves downwards, the piston lower extending end face (7) is matched and sealed with the body outlet end inner cavity cut-off opening (8), the upward extending part (27) of the sealing ring groove (5) is provided with a first sealing face (29), a lower end face (28) of the sealing ring groove (5) is provided with a second sealing face (30), and the cover (1) and the body (3) are sealed and connected into a whole by fasteners.
7. The diaphragm-free shaft sleeve spring K-type liquid control valve according to claim 1, wherein:
the piston is characterized in that a cut-off opening (26) is formed in the seat (2), the ring plane of the cut-off opening (26) is parallel to the ring plane of the piston cylinder inner ring (4) in distance and the center line position of the cut-off opening is the same, an upward extending portion (27) of the sealing ring groove (5) or a lower end face (28) of the sealing ring groove (5) is matched and sealed with the cut-off opening (26) after the piston (55) moves downwards, the piston lower extending end face (7) is matched and sealed with the body outlet end inner cavity cut-off opening (8), the upward extending portion (27) of the sealing ring groove (5) is provided with a first sealing face (29), the lower end face (28) of the sealing ring groove (5) is provided with a second sealing face (30), and the cover (1), the seat (2) and the body (3) are sealed and connected into a whole by fasteners.
8. The diaphragm-free shaft sleeve spring K-type liquid control valve of claim 1, wherein:
the cover (1) is provided with a shaft rod (31) extending into the inner cavity (9) of the piston, and the contact part of the shaft rod (31) and the cover (1) is sealed.
9. The diaphragm-free shaft sleeve spring K-type liquid control valve of claim 1, wherein:
the inner cavity (9) of the piston is connected with the inner cavity (13) of the body inlet end, and the inner cavity (9) of the piston is connected with the inner cavity (10) of the body outlet end through a pipeline with a valve or directly connected through a pipeline.
10. The diaphragm-free shaft sleeve spring K-type liquid control valve of claim 9, wherein:
an electric actuator (54) is installed on the valve, and the electric actuator (54) performs valve opening and closing.
11. The diaphragm-free shaft sleeve spring K-type liquid control valve according to any one of claims 1 to 10, wherein:
the inner chamber (9) of piston is through pipe connection tee bend valve (33), an export of tee bend valve (33) is through pipe connection body entry end inner chamber (13) or an export of tee bend valve (33) is through pipeline, check valve (34) connector entry end inner chamber (13), and another export is through pipe connection body exit end inner chamber (10).
12. The diaphragm-free shaft sleeve spring K-type liquid control valve according to any one of claims 1 to 10, wherein:
the inner cavity (9) of the piston is connected with the inlet end inner cavity (13) through a pipeline and an inlet end two-way valve (35), and the inner cavity (9) of the piston is connected with the outlet end inner cavity (10) through a pipeline and an outlet end two-way valve (36);
or alternatively
Inner chamber (9) of piston are through pipeline, input end two-way valve (35), half-closed check valve (37) connector input end inner chamber (13), inner chamber (9) of piston are through pipeline, output end two-way valve (36), half-closed check valve (37) connector output end inner chamber (10).
13. The diaphragm-free shaft sleeve spring K-type liquid control valve according to any one of claims 1 to 10, wherein:
the inner cavity (9) of the piston is connected with a tee joint I (39) through a two-way valve I (38), two outlets of the tee joint I (39) are respectively provided with a check valve (34), the outlet of one check valve (34) enters the inner cavity (13) through a pipeline connector, and the outlet of the other check valve (34) passes through an outlet inner cavity (10) of the pipeline connector;
the inner cavity (9) of the piston is connected with a tee joint II (41) through a two-way valve II (40), two outlets of the tee joint II (41) are respectively provided with a check valve (34), the outlet of one check valve (34) is connected with the valve body inlet end inner cavity (13) through a pipeline, and the outlet of the other check valve (34) is connected with the valve body outlet end inner cavity (10) through a pipeline connector.
14. The diaphragm-free shaft sleeve spring K-type liquid control valve according to any one of claims 1 to 10, wherein:
the inner cavity (9) of the piston is connected with the inlet end inner cavity (13) through a pipeline and an inlet end two-way valve (35), the inner cavity (9) of the piston is connected with a ball float valve (42) through an outlet end two-way valve (36) and a pipeline, and a flange (43) of the body outlet end inner cavity is connected with the pipeline to a liquid pool (45).
15. The diaphragm-free shaft sleeve spring K-type liquid control valve according to any one of claims 1 to 10, wherein:
the inner cavity (9) of the piston is connected with one outlet of a hand wheel three-way pilot valve (46) through a check valve (34) and a pipeline, and the other outlet of the hand wheel three-way pilot valve (46) is connected with a liquid inlet end (48) of a pump (47) through a pipeline; the inlet of the hand wheel three-way pilot valve (46) is connected with the inlet inner cavity (13) through a pipeline and an inlet two-way valve (35), a hand wheel (49) is arranged on the hand wheel three-way pilot valve (46), and the inner cavity (9) of the piston is connected with the outlet inner cavity (10) through a pipeline and an outlet two-way valve (36).
16. The diaphragm-free shaft sleeve spring K-type liquid control valve according to any one of claims 1 to 10, wherein:
the inner cavity (9) of the piston is connected with an inlet of a two-way valve (50) through a pipeline, the outlet of the two-way valve (50) passes through an outlet two-way valve (36) and a pipeline connector outlet inner cavity (10), the inner cavity (9) of the piston passes through a pipeline and an inlet two-way valve (35) connector inlet inner cavity (13), and the top of the two-way valve (50) is provided with a screw rod (51);
or
The inner cavity (9) of piston is through an export of pipe connection tee bend pilot valve (52), another export of tee bend pilot valve (52) is through a delivery end two-way valve (36), pipe connection body delivery end inner chamber (10), the body entry end inner chamber (13) is through the entry of entry end two-way valve (35), pipe connection tee bend pilot valve (52), inner cavity (9) of piston is through two-way valve III (53), pipe connection body delivery end inner chamber (10), the top of tee bend pilot valve (52) is equipped with a screw rod (51).
CN202122628902.8U 2020-12-16 2021-10-29 K-shaped liquid control valve with no diaphragm, shaft sleeve and spring Active CN216715326U (en)

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CN2020114855138 2020-12-16
CN202011485513 2020-12-16

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CN202111273600.1A Pending CN115962318A (en) 2020-12-16 2021-10-29 K-type liquid control valve with no diaphragm, shaft rod and shaft sleeve and spring

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CN202111273600.1A Pending CN115962318A (en) 2020-12-16 2021-10-29 K-type liquid control valve with no diaphragm, shaft rod and shaft sleeve and spring

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CN115962318A (en) 2023-04-14

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