CN214888908U

CN214888908U - Swing type control valve

Info

Publication number: CN214888908U
Application number: CN202121267834.0U
Authority: CN
Inventors: 戴云
Original assignee: Xi'an Zhongchuang Yunlian Intelligent Technology Co ltd
Current assignee: Xi'an Zhongchuang Yunlian Intelligent Technology Co ltd
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2021-11-26
Anticipated expiration: 2031-06-07

Abstract

The utility model discloses a swing type control valve, including locating swing reversing mechanism and the valve body sealed lid of installation intracavity, the valve body sealed lid is located the valve body end of giving vent to anger, and swing reversing mechanism includes the speed reduction steering gear group, and speed reduction steering gear group input shaft connects actuating mechanism, and speed reduction steering gear group output shaft transmission connects the valve body sealed lid and drives the valve body sealed lid to open and close, is equipped with guide's pressure release hole on the valve body sealed lid, is equipped with the guide's sealed lid that matches with guide's pressure release hole on the valve body sealed lid, and when the control valve was opened, swing steering mechanism opened guide's sealed lid earlier and then opened the valve body sealed lid; the utility model discloses can open and close the sealed lid of valve body fast, and the sealed face and the valve body sealing port frictionless of opening and close the sealed lid of in-process valve body, reduce sealed face and damage and run the phenomenon of dripping and leaking, improve valve life, seal through the guide and seal the lid and carry out guide's pressure release, required moment of torsion when reducing to open improves the explosion-proof security of product.

Description

Swing type control valve

Technical Field

The utility model relates to a metering control technical field, concretely relates to swing type control valve.

Background

Along with the concern of people on the environmental protection problem and the continuous improvement of environmental protection consciousness, the natural gas as a new environmental protection energy source is concerned and used more and more widely, and along with the expansion of a user network, the gas metering and controlling of a user in the natural gas using process become an important problem. The special control valve of the intelligent controller plays an important role of an executor in the whole gas metering system, and the quality of the performance of the special control valve not only directly influences the accuracy of metering control, but also directly concerns the use safety of natural gas. At present, a control valve configured for an intelligent gas flow instrument generally adopts a general direct-current speed reduction motor to drive a starting and closing piece to do linear or rotary motion so as to complete the opening and closing of the valve, but the control valve generally has the problems of insufficient driving capability of the speed reduction motor, low reliability of the starting and closing work, complex internal transmission structure, large required starting torque, large pressure loss generated by the internal structure of the control valve and the like.

Chinese utility model patent with publication number CN205244550U discloses a control valve for supplying gas of intelligence gas instrument, including the valve body, be provided with the pole socket in the valve body, be equipped with matched with bevel pinion and big bevel gear on the pole socket, wherein bevel pinion links with power drive mechanism, and big bevel gear becomes with the depression bar is fixed, and the depression bar is still linked there is little sealed lid. This control valve gap adopts the formula of lifting to open the structure, can realize the formula of lifting from the structure principle and open and close, has ensured the gas circuit to a certain extent unblocked, but in the in-service use, can't satisfy the work that satisfies stability, reliability, has following several defects simultaneously:

1. the opening and closing piece is driven to open through the transmission of the two straight-tooth bevel (bevel) gears, the large bevel gear is fixed with the pressing rod into a whole, the valve cover can be lifted along with the rotation of the large gear, but the pressing rod is in single-point contact with the gear shaft, the stable transmission of torque is not facilitated, the torque required by the opening and closing of the valve is very large, the improvement of the torque is required to be realized by improving the power of the motor, the power consumption of a product is increased, the service life of a battery in the controller is shortened, and the electrical safety and reliability are reduced.

2. The control valve performs speed reduction transmission through a large bevel gear and a small bevel gear, the speed reduction ratio is limited, the control valve does not have any adjustability and expansibility, meanwhile, the transmission precision is poor, the instantaneous transmission ratio is not accurate, the straight-tooth bevel (bevel) gear structure is only suitable for general steering transmission, and for mechanisms with relaxed requirements on speed and transmission ratio, the control valve cannot ensure complete, stable and reliable opening or closing within the working pressure range required by gas metering equipment.

3. When the bevel gear is in meshing transmission, a larger tangential relative sliding speed exists along the tooth length direction of the bevel gear, so that larger abrasion is generated, the profiles of the two teeth are in a point contact state, the requirement on the contact stress value is increased, and the driving load is increased.

4. The bevel gear (bevel gear) is adopted as a transmission part, the process is complex, the requirements on manufacturing and mounting precision are high, if the product precision is high, the production cost is increased, if the product precision is low, the problems that the vibration and noise are large, the bevel gear is not suitable for transmission with large distance between shafts and the like are caused, and meanwhile, the bevel gear is not suitable for popularization and application of large-diameter valves and the like.

5. The relative position of the opening and closing piece of the control valve relative to the center of the valve body flow channel cannot be adjusted during installation, so that the machining precision requirement of product parts is greatly improved, and meanwhile, the valve body of the control valve is a cast product and is limited by a structure, and the inner cavity of the valve body cannot be machined. Therefore, the control valve cannot guarantee stable and centered compression or separation of the sealing opening and closing piece cover, the phenomena of eccentricity and inclination of the opening and closing piece can occur to a great extent, and the situation that the valve cannot be sealed tightly or even cannot occur.

6. Among the above-mentioned control flap, the face of cylinder of little sealed lid is cut has the rectangular hole unanimous with the depression bar tangent plane, the depression bar is packed into in the rectangular hole of this little sealed lid (0.1 mm to 1mm clearance will be left on the four sides), and install the staple, the staple head also needs 0.1mm to 1mm clearance with little sealed lid, but in the actual production, this kind can not accurate quantitative tiny clearance design, hardly realize the uniformity of product quality stability and product part, and the four sides clearance fit of this kind of rectangular hole can't realize that its little sealed lid described herein can 360 degrees around stress point swing and automatic alignment's effect, the practicality is not strong.

Therefore, how to design a control valve with high efficiency, stable performance and high stability is a problem to be solved urgently at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to improve the not enough that exists among the prior art, provide a swing type control valve.

The utility model adopts the technical scheme as follows:

a swing control valve comprises a valve body, a driving mechanism, a swing reversing mechanism and a valve body sealing cover, wherein the valve body comprises an air inlet end, an installation cavity and an air outlet end which are sequentially communicated from the air inlet end to the air outlet end; the swing reversing mechanism comprises a swing support and a speed reduction steering gear set, the speed reduction steering gear set is arranged in the installation cavity through the swing support, an input shaft of the speed reduction steering gear set is in transmission connection with the driving mechanism, and an output shaft of the speed reduction steering gear set is in transmission connection with the valve body sealing cover through a swing arm and drives the valve body sealing cover to rotate to open and close.

Furthermore, the valve body sealing cover is provided with a pilot pressure relief hole, the air inlet side of the valve body sealing cover is provided with a pilot sealing cover matched with the pilot pressure relief hole, and the pilot sealing cover is fixedly connected with the swing arm through a pilot balance column; the rotary opening arm is connected with the valve body sealing cover through a support column, the rotary opening arm is provided with a guide hole matched with the support column, and a support column body penetrates through the guide hole and is in sliding connection with the rotary opening arm; the support column tip is equipped with the stopper, and the support column shaft is equipped with the spring, and the spring is located the stopper and opens between the arm soon, leads sealed lid sealed closed when leading the pressure release hole earlier, opens the arm soon and keeps away from the stopper.

Furthermore, the air inlet side of the pilot sealing cover is provided with a spherical crown-shaped boss, and the swing arm is provided with a groove matched with the spherical crown-shaped boss.

Furthermore, the speed reduction steering gear set comprises a driving spiral helical gear and a driven spiral helical gear which are arranged vertically in a staggered mode relatively, the number of teeth of the driving spiral helical gear is smaller than that of the driven spiral helical gear, an input shaft of the driving spiral helical gear is in transmission connection with an output shaft of the driving mechanism, the driving spiral helical gear is meshed with the driven spiral helical gear, and the output shaft of the driven spiral helical gear is in transmission connection with the swing arm through a linking plate.

Furthermore, the swing arm comprises a long arm and a short arm arranged at one end of the long arm relatively, the short arm is connected with the linking plate, the long arm is connected with the valve body sealing cover through a connecting support column, and the long arm is connected with the pilot sealing cover through a pilot balance column.

Furthermore, the driving mechanism comprises a first gear box and a second gear box which are isolated and sealed from each other, and the first gear box and the second gear box are arranged outside the valve body in parallel.

Furthermore, a micro direct current motor, a first gear set and an active permanent magnet are arranged in the first gear box, the output end of the micro direct current motor is in transmission connection with the input end of the first gear set, and the output end of the first gear set is in transmission connection with the active permanent magnet; and a driven permanent magnet and a second gear set are arranged in the second gear box, the driven permanent magnet and the driving permanent magnet are arranged oppositely, the driven permanent magnet is in transmission connection with the input end of the second gear set, and the output end of the second gear set is in transmission connection with the input end of the speed reduction and steering gear set.

Furthermore, the end of giving vent to anger is equipped with the valve body sealed vice that matches with the sealed lid of valve body, and valve body and the vice integrated into one piece of valve body seal.

Further, the swing support is fixedly arranged at the top end of the installation cavity, and an adjusting gasket is arranged between the swing support and the installation cavity.

Further, the cross section of the installation cavity is octagonal.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

(1) the valve body sealing cover is driven to open and close by driving the reversing mechanism to rotate, so that the valve body sealing cover is driven to open and close;

(2) the pilot sealing cover with the pilot pressure relief function is arranged on the valve body sealing cover, so that the pressure of a pipeline at the air inlet end is relieved firstly in the rotary opening process, and then the rotary opening action is executed, the balance of the pressures at the two ends of the pipeline and the stable transmission of fuel gas are ensured, the torque required in the opening process can be further reduced, the power consumption of a driving mechanism is reduced, and the explosion-proof safety of a product is greatly improved;

(3) the support column is connected with the swing arm in a sliding mode, so that stroke guiding of the pilot sealing cover in the opening and closing process is achieved, meanwhile, flexible rotation of the pilot sealing cover is achieved by matching with connection guiding of the pilot balancing column through alignment structure design between the spherical crown-shaped boss and the groove, automatic aligning balance of the pilot sealing cover is achieved, alignment precision and structural stability between the pilot sealing cover and the valve sealing cover are guaranteed, and sealing performance of the valve is guaranteed; meanwhile, the mechanical limit of the opening process of the pilot sealing cover is realized by utilizing the arrangement of the limiting block on the supporting column, and the reliability of the utility model is further improved;

(4) through the structural design of the supporting column, the swing arm, the pilot sealing cover and the valve sealing cover, a series of functions of valve pressure relief, opening and closing of the valve body sealing cover and opening and closing of an airflow channel can be realized only by performing unidirectional rotation motion on a main shaft of a swing reversing mechanism in the opening and closing process of the valve, and the swing reversing mechanism has the advantages of simple structure, ingenious design, convenience in use, high stability, high safety and the like;

(5) the driving mechanism is arranged into two gear boxes which are isolated and sealed from each other and arranged outside the valve body, so that the resistance of the driving mechanism to medium circulation is greatly reduced, meanwhile, a magnetic transmission piece is respectively arranged in the two gear boxes to replace a gear, the gear rigid transmission in the traditional gear box is converted into flexible transmission by using a magnetic coupling transmission technology, a magnetic clutch effect is generated when the control valve reaches mechanical limit, the motor stalling condition is prevented, and the service life of the driving mechanism is prolonged;

(6) through giving vent to anger the end setting with the sealed valve body that matches of lid of valve body sealed vice, valve body seals vice and valve body integrated into one piece, adopts the integral structure to set up in the valve body end inboard of giving vent to anger in order to replace the internal independent disk seat structure of traditional valve door, simplifies the valve structure, improves sealed reliability, avoids because of the sealed problem of revealing that exists between seal and the valve body when setting up the sealed mouth structure of disk seat alone.

(7) Through will swing the fixed installation cavity top of locating of support to set up the adjusting washer between swing support and installation cavity, not only improve the assembly convenience of product, and can adjust the sealed lid height of valve body in a flexible way, guarantee that the sealed lid of valve body is concentric with the center of valve body runner, effectively improved the sealed reliability of product, the emergence of the condition that the open and close piece of very big degree prevention current structure product is eccentric, slope and valve seal is not tight or even unable to seal.

(8) Through setting up valve body runner cavity cross-section to octagon structure, compare the circular cavity of traditional valve, under the condition that valve body appearance volume does not have the increase, can further improve fluidic flow area.

Drawings

Fig. 1 is a schematic structural diagram of the first embodiment.

Fig. 2 is a cross-sectional view taken along the plane B-B of fig. 1.

Fig. 3 is a partially enlarged view of fig. 1.

The labels in the figure are:

1. a valve body; 1-1, a valve body sealing pair; 2. a valve body sealing cover; 3. swing the arm; 3-1, long arm; 3-2, short arm; 3-3, a groove; 4. a pilot seal cover; 4-1, spherical crown boss; 5. a support pillar; 5-1, a micro spring; 5-2, a limiting block; 6. a pilot balancing column; 7. turning on the bracket; 7-1, a bearing; 8. a drive mechanism; 9. a driven helical gear; 10. a driving helical gear; 11. a link plate; 12. a first gear box; 13. a second gear box.

Detailed Description

As shown in fig. 1 to 3, the utility model comprises a valve body 1, wherein the valve body 1 comprises an air inlet end, an installation cavity and an air outlet end which are sequentially communicated from the air inlet end to the air outlet end, and further comprises a driving mechanism 8, a swing reversing mechanism and a valve body sealing cover 2, the swing reversing mechanism and the valve body sealing cover 2 are both arranged in the installation cavity, and the valve body sealing cover 2 is arranged at the air outlet end and is matched with the inner diameter of the air outlet end; the swing reversing mechanism comprises a swing support 7 and a speed reduction steering gear set, the speed reduction steering gear set is arranged in the installation cavity through the swing support 7, an input shaft of the speed reduction steering gear set is in transmission connection with a driving mechanism 8, an output shaft of the speed reduction steering gear set is connected with a swing arm 3 through a link plate 11, and the swing arm 3 is in transmission connection with a valve body sealing cover 2 and drives the valve body sealing cover 2 to rotate to open and close.

The valve body sealing cover 2 is provided with a pilot pressure relief hole, the air inlet side of the valve body sealing cover 2 is provided with a pilot sealing cover 4 matched with the pilot pressure relief hole, and the pilot sealing cover 4 is fixedly connected with the swing arm 3 through a pilot balance column 6; the swing arm 3 is connected with the valve body sealing cover 2 through a support column 5, the swing arm 3 is provided with a guide hole matched with the support column 5, and a column body of the support column 5 penetrates through the guide hole and is in sliding connection with the swing arm 3; the end part of the support column 5 is provided with a limiting block 5-2, the column body of the support column 5 is provided with a spring, the spring is positioned between the limiting block 5-2 and the swing arm 3, and when the pilot sealing cover 4 is sealed and closed in the pilot pressure relief hole, the swing arm 3 is far away from the limiting block 5-2.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments.

As shown in fig. 1 and fig. 2, the utility model discloses a valve body 1, the fluid flows from left to right in the definition valve body 1, then valve body 1 includes the inlet end that communicates in proper order from left to right, the installation cavity and the end of giving vent to anger, the installation cavity top is equipped with actuating mechanism 8, be equipped with swing reversing mechanism and the sealed lid 2 of valve body in the installation cavity, in order to improve sealing performance, it is sealed vice 1-1 to give vent to anger the end left side and be equipped with the valve body, the sealed lid 2 of valve body corresponds the setting with the sealed vice 1-1 internal diameter phase-match of valve body, compress tightly or break away from the sealed face of the sealed vice 1-1 of valve body through the sealed lid 2 of valve body, realize opening and closing of pipeline.

In order to increase the fluid flow area, the flow channel formed among the air inlet end, the installation cavity and the air outlet end in this embodiment adopts a flow channel structure with an octagonal cross section.

The swing reversing mechanism comprises a swing support 7 and a speed reduction steering gear set, the speed reduction steering gear set realizes the change of the torque force transmission direction and the reduction of the torsion speed, the output torque is increased, and the speed reduction steering gear set is arranged at the top end of the installation cavity through the swing support 7.

The top end of the swing support 7 is provided with a threaded mounting hole, the top end of the mounting cavity is provided with a circular hole for mounting the swing support 7, and an adjusting washer (not shown in the attached drawings) for adjusting the relative height between the swing support 7 and the center of the flow channel is arranged in the circular hole. Through the interlinkage between the circular port on screw and installation cavity top, will swing support 7 and connect the speed reduction steering gear group on swing support 7 and be fixed in 1 installation cavity top of valve body, can realize nimble adjustment speed reduction steering gear group height through the adjusting washer height, adjust the sealed lid of valve body 2 promptly and runner center relative height, guarantee its position accuracy.

The speed reduction and steering gear set comprises a driving spiral helical gear 10 and a driven spiral helical gear 9 which are meshed with each other, the driving spiral helical gear 10 is arranged in the vertical direction and is in transmission connection with an output shaft of a driving mechanism 8, a swing support 7 is provided with a vertical mounting hole, a bearing 7-1 matched with a rotating shaft of the driving spiral helical gear 10 is arranged in the vertical mounting hole, the driven spiral helical gear 9 is horizontally arranged in the front-back direction, and the front side and the back side of the driven spiral helical gear 9 are coaxially connected with a linking plate 11. The swing arm 3 is Y-shaped and comprises two short arms 3-2 and a long arm 3-1, and the two short arms 3-2 are respectively connected with the link plates 11 at two sides. The swing steering mechanism is connected with a swing arm 3 through a linking plate 11, and then is connected with a valve body sealing cover 2 and drives the valve body sealing cover 2 to rotate around the axis of a driven spiral helical gear 9, so that the torque transmission between an input shaft and an output shaft spatially staggered shaft is increased.

The number of teeth of the driving spiral helical gear 10 is less than that of the driven spiral helical gear 9, so that the effects of reducing the rotating speed and improving the torque are achieved, the power consumption requirement of the driving mechanism 8 is reduced, meanwhile, according to the difference of required torque, the gear ratio of the driving spiral helical gear 10 to the driven spiral helical gear 9 can be flexibly adjusted according to requirements in actual use, the application range is wide, the flexibility is high, and the practicability is high.

In order to adapt to different use requirements, a reduction gear set can be further added between the driving spiral helical gear 10 and the output shaft of the driving mechanism 8 according to different valve calibers or different gear speed ratios, so that the speed ratio of a transmission gear set of the swing mechanism is further increased, and the torque of the output shaft is improved under the condition that the input torque is kept unchanged.

The upper end of a link plate 11 is coaxially connected with an output shaft of a driven spiral helical gear 9, a U-shaped groove matched with a short arm 3-2 of a swing arm 3 is formed in the lower end of the link plate 11, a connecting hole is formed in the bottom of the U-shaped groove, the upper end of the swing arm 3 with different models and sizes can be installed in the U-shaped groove of the link plate 11, the link plate 11 and the swing arm 3 are fixed through screws, and therefore the swing arm 3 can rotate around the output shaft to open or close the valve cover.

The linking plate 11 adopts a standardized interface, so that the swing steering mechanism can adapt to swing arms 3 of valves with different calibers and sizes through the linking cover, greatly simplifies the non-uniform sizes of parts of a series product, has complex production management and control, and is beneficial to product serialization and standardization.

A supporting column 5 is vertically arranged on the left end face of a valve body sealing cover 2, a limiting block 5-2 is arranged at the left end portion of the supporting column 5, a guide hole which penetrates through the left and right of a long arm 3-1 of a swing arm 3 and is matched with the supporting column 5 is formed in the left end face of the swing arm, a column body of the supporting column 5 penetrates through the guide hole and is in sliding connection with the long arm 3-1 of the swing arm 3, and a micro spring 5-1 is arranged on the column body of the supporting column 5 between the long arm 3-1 of the swing arm 3 and the limiting block 5-2.

A pilot pressure relief hole is formed in the circle center of the valve body sealing cover 2, and a pilot sealing cover 4 matched with the pilot pressure relief hole is arranged on the left side of the valve body sealing cover 2 corresponding to the pilot pressure relief hole. As shown in fig. 3, a spherical crown-shaped boss 4-1 extending leftward is arranged at the center of the circle of the left end face of the pilot sealing cover 4, a groove 3-3 matched with the spherical crown-shaped boss 4-1 is arranged at the right end face of the long arm 3-1 of the swing arm 3, the left end part of the pilot balancing column 6 sequentially penetrates through the spherical crown-shaped boss 4-1 and the groove 3-3 and then extends out of the long arm 3-1 of the swing arm, a limiting surface is arranged at the left end part of the pilot balancing column 6, the right end part of the pilot balancing column is fixedly connected with the pilot sealing cover 4, and in the process of opening or closing the pilot sealing cover 4, the spherical crown-shaped boss 4-1 can flexibly rotate in the groove 3-3 under the action of the pilot balancing column 6, so that the automatic centering balance of the pilot sealing cover 4 is realized, and the sealing performance of the pilot sealing cover 4 is further ensured.

The driving mechanism 8 comprises a first gear box 12 and a second gear box 13 which are isolated and sealed from each other, wherein the first gear box 12 and the second gear box 13 are arranged up and down and are positioned outside the valve body 1. A micro direct current motor, a first gear set and an active permanent magnet are arranged in the first gear box 12, and the micro direct current motor, the first gear set and the active permanent magnet are sequentially driven; and a driven permanent magnet and a second gear set are arranged in the second gear box 13, the driven permanent magnet and the driving permanent magnet are oppositely arranged and magnetically driven, the driven permanent magnet is in transmission connection with the second gear set, and the output end of the second gear set is in transmission connection with the input shaft of the reduction gear set.

The electric actuator adopts the split design of two groups of independent gear reduction boxes, the two independent gear reduction boxes are connected into a whole through screws and are fixed outside the cavity of the control valve, and the miniature direct current motor is arranged inside the gear reduction boxes, so that the environmental adaptability and the protective performance of the motor are greatly improved, and the problem that the motor is directly arranged in a complex environment for a long time and is caused by insufficient protection is avoided.

The two gear box boxes are respectively internally provided with a magnetic transmission part to replace gears, and the two magnetic transmission parts are mutually isolated and sealed, so that the torque of the valve switch valve is improved, and the purposes of explosion prevention and micro power consumption are achieved. Meanwhile, the rigid transmission of the gears in the traditional gear box is converted into flexible transmission by utilizing the magnetic coupling transmission technology between the magnetic transmission parts. When the control valve reaches mechanical limit, the embodiment can generate magnetic clutch action, prevent the locked rotor from happening, effectively prolong the service life of the actuating mechanism and greatly reduce the resistance of medium circulation.

The utility model discloses a theory of operation does:

the driving mechanism 8 provides output torque, the input shaft drives the swing steering mechanism to decelerate and reverse to drive, so that the output shaft and the input shaft are crossed for 90 degrees in rotary motion, and the output shaft transmits rotary torque to the swing arm 3 through the link cover to enable the swing arm to do stable rotary motion.

In the opening process of the control valve, the swing steering mechanism is used for transmitting the decelerating and rotating torque force to the swing arm 3, the swing arm 3 firstly compresses the micro spring 5-1 leftwards to drive the pilot sealing cover 4 to be separated from the pilot pressure release hole in the center of the sealing cover 2 of the valve body in an automatic balance state, at the moment, the inner cavity of the valve body 1 is rapidly released with pressure, the process is favorable for balancing the pressure at two ends of a pipeline and stably transmitting fuel gas, and the working torque of the actuating mechanism is also favorably reduced. When the swing arm 3 reaches the limiting block 5-2 at the left end of the supporting column 5, the valve body sealing cover 2 is driven to move together to be separated from the connector of the valve body sealing pair 1-1, and the sealing cover is completely opened.

In the closing process of the valve, the driving mechanism 8 rotates reversely, the swing steering mechanism is used for transmitting rotating torque to the swing arm 3, the swing arm 3 rotates rightwards and enables the micro spring 5-1 to extend, the swing arm 3 drives the pilot sealing cover 4 to push the valve sealing cover 2 rightwards under the state of keeping automatic aligning till the valve sealing cover 2 is pressed on the sealing pair, and the pressing sealing closing of the valve sealing cover 2 is realized. In the closing process, the pilot sealing cover 4 automatically adjusts the balance to ensure that the sealing cover 2 of the opening and closing member valve body is reliably and tightly pressed.

Compared with the traditional control valve, the utility model discloses can close the valve rapidly in the short time, reduce because of economic loss and the potential safety hazard that the valve slowly closed and cause, and close sealed face of in-process valve bonnet and the 1 sealing port of valve body frictionless, reduce sealed face because of the damage that long-term friction caused and the leakage phenomenon of running and falling, further because little sealed lid is automatic aligning and the compact disk seat of pressure, can ensure under the valve bonnet sealing washer lossy condition, still can closely reliable compress tightly sealed, the complicated structure of design elastic compensation disk seat has been removed from.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a swing type control valve, includes the valve body, and the valve body includes by inlet end to the inlet end, the installation cavity that the end communicates in proper order of giving vent to anger and gives vent to anger the end, its characterized in that: the gas-liquid separator also comprises a driving mechanism, a swing reversing mechanism and a valve body sealing cover, wherein the swing reversing mechanism and the valve body sealing cover are arranged in the mounting cavity, and the valve body sealing cover is arranged at the gas outlet end and is matched with the inner diameter of the gas outlet end; the swing reversing mechanism comprises a swing support and a speed reduction steering gear set, the speed reduction steering gear set is arranged in the installation cavity through the swing support, an input shaft of the speed reduction steering gear set is in transmission connection with the driving mechanism, and an output shaft of the speed reduction steering gear set is in transmission connection with the valve body sealing cover through a swing arm and drives the valve body sealing cover to rotate to open and close.

2. The swing control valve according to claim 1, wherein: the valve body sealing cover is provided with a pilot pressure relief hole, a pilot sealing cover matched with the pilot pressure relief hole is arranged on the air inlet side of the valve body sealing cover, and the pilot sealing cover is fixedly connected with the swing arm through a pilot balance column; the rotary opening arm is connected with the valve body sealing cover through a support column, the rotary opening arm is provided with a guide hole matched with the support column, and a support column body penetrates through the guide hole and is in sliding connection with the rotary opening arm; the support column tip is equipped with the stopper, and the support column shaft is equipped with the spring, and the spring is located the stopper and opens between the arm soon, leads sealed lid sealed closed when leading the pressure release hole earlier, opens the arm soon and keeps away from the stopper.

3. The swing control valve according to claim 2, wherein: the air inlet side of the pilot sealing cover is provided with a spherical crown-shaped boss, and the swing arm is provided with a groove matched with the spherical crown-shaped boss.

4. The swing control valve according to claim 1, wherein: the speed reduction steering gear set comprises a driving spiral helical gear and a driven spiral helical gear which are arranged vertically in a staggered mode relatively, the number of teeth of the driving spiral helical gear is smaller than that of the driven spiral helical gear, an input shaft of the driving spiral helical gear is in transmission connection with an output shaft of the driving mechanism, the driving spiral helical gear is meshed with the driven spiral helical gear, and the output shaft of the driven spiral helical gear is in transmission connection with the swing arm through a linking plate.

5. The swing control valve according to claim 4, wherein: the swing arm comprises a long arm and a short arm arranged at one end of the long arm relatively, the short arm is connected with the linking plate, the long arm is connected with the valve body sealing cover through a connecting support column, and the long arm is connected with the pilot sealing cover through a pilot balance column.

6. The swing control valve according to claim 1, wherein: the driving mechanism comprises a first gear box and a second gear box which are isolated and sealed from each other, and the first gear box and the second gear box are arranged outside the valve body in parallel.

7. The swing control valve according to claim 6, wherein: a micro direct current motor, a first gear set and an active permanent magnet are arranged in the first gear box, the output end of the micro direct current motor is in transmission connection with the input end of the first gear set, and the output end of the first gear set is in transmission connection with the active permanent magnet; and a driven permanent magnet and a second gear set are arranged in the second gear box, the driven permanent magnet and the driving permanent magnet are arranged oppositely, the driven permanent magnet is in transmission connection with the input end of the second gear set, and the output end of the second gear set is in transmission connection with the input end of the speed reduction and steering gear set.

8. The swing control valve according to claim 1, wherein: the air outlet end is provided with a valve body sealing pair matched with the valve body sealing cover, and the valve body sealing pair are integrally formed.

9. The swing control valve according to claim 1, wherein: the swing support is fixedly arranged at the top end of the installation cavity, and an adjusting gasket is arranged between the swing support and the installation cavity.

10. The swing control valve according to claim 1, wherein: the cross section of the installation cavity is octagonal.