CN113775587B - Hydraulic remote control proportional flow control valve - Google Patents
Hydraulic remote control proportional flow control valve Download PDFInfo
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- CN113775587B CN113775587B CN202111074251.0A CN202111074251A CN113775587B CN 113775587 B CN113775587 B CN 113775587B CN 202111074251 A CN202111074251 A CN 202111074251A CN 113775587 B CN113775587 B CN 113775587B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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Abstract
The application relates to a hydraulic remote control proportional flow regulating valve, which comprises a remote control valve, a control pipeline and a regulating valve body; the remote control valve comprises a control valve body, a control cavity is arranged in the control valve body, a control valve core is arranged in the control cavity in a sliding mode, and the control cavity comprises a first cavity and a second cavity; the regulating valve body comprises a regulating valve body, a first mounting cavity and a second mounting cavity are formed in the regulating valve body, an oil inlet and an oil outlet are formed in the regulating valve body, and a regulating valve core is connected in the first mounting cavity in a sliding manner; a piston is connected in the second mounting cavity in a sliding manner, one end, facing the adjusting valve core, of the piston is fixedly connected with a push rod, the push rod is abutted against the adjusting valve core, one side, facing the push rod, of the piston is called a third cavity, and the other side of the piston is called a fourth cavity; the control pipeline is connected with the second cavity and the third cavity, and the first cavity and the fourth cavity are communicated with the outside. The problem of the valve installation of not being convenient for and maintenance has been solved in this application, satisfies the requirement that proportional flow control valve used under adverse circumstances.
Description
Technical Field
The application relates to the field of flow control valves, in particular to a hydraulic remote control proportional flow control valve.
Background
The proportional flow control valve can adjust the flow of a hydraulic system pipeline and is used for realizing the control of a hydraulic pipeline.
The most widely used proportional flow control valve in the market at present is mainly pneumatic control. The electric regulation is roughly divided into two types, one type is that the opening size of a valve is controlled by a proportional electromagnet; the other is to control the opening of the valve by a motor and a positioner, and the structure is usually suitable for the valve with larger drift diameter.
In any way, the control mechanism needs to be fixed with the valve body, so that enough installation space needs to be reserved during installation, and especially for the large-diameter valve, because the size of the actuating mechanism is large, the occupied space of a hydraulic pipeline is large, and the installation is inconvenient. And the installation position of part of the valve is higher, so that the actuating mechanism also needs to be installed at a higher position, and the later maintenance of the actuating mechanism is particularly difficult. In addition, under the relatively abominable condition of operational environment, the use under the abominable environment can be satisfied to the tolerance of traditional valve body, but actuating mechanism can't realize working under the abominable environment, has leaded to traditional proportion flow control valve can't use under the abominable environment.
Disclosure of Invention
In order to solve the problem that the valve is not convenient for install and maintain, satisfy the requirement that proportional flow control valve used under adverse circumstances, this application provides a hydraulic pressure remote control proportional flow control valve.
The application provides a hydraulic pressure remote control proportional flow control valve adopts following technical scheme:
a hydraulic remote control proportional flow control valve comprises a remote control valve, a control pipeline and a control valve body;
the remote control valve comprises a control valve body, a control cavity is arranged in the control valve body, a control valve core is connected in the control cavity in a sliding mode, and the control cavity comprises a first cavity located on one side of the control valve core and a second cavity located on the other side of the control valve core;
the regulating valve body comprises a regulating valve body, a first mounting cavity and a second mounting cavity are formed in the regulating valve body, an oil inlet and an oil outlet which are communicated with the first mounting cavity are formed in the regulating valve body, and a regulating valve core for regulating the flow of liquid flowing from the oil inlet to the oil outlet is slidably connected in the first mounting cavity; a piston is connected in the second mounting cavity in a sliding manner, one end, facing the adjusting valve core, of the piston is fixedly connected with a push rod, the push rod penetrates through the first mounting cavity and abuts against the adjusting valve core so as to control the degree of the adjusting valve core for plugging between an oil inlet and an oil outlet, one side, away from the push rod, of the piston in the second mounting cavity is called a third cavity, and one side, facing the push rod, of the piston in the second mounting cavity is called a fourth cavity;
the control pipeline is communicated between the second cavity and the third cavity, and the first cavity and the fourth cavity are communicated with the outside.
By adopting the technical scheme, during installation, the remote control valve can be installed at a proper position, then the regulating valve body is installed on the hydraulic pipeline, then the control pipeline with proper length is selected to be connected between the remote control valve and the regulating valve body, when the operation control valve core slides in the control accommodating cavity, liquid in the second cavity can be pushed into the third cavity, so that the ejector rod is pushed to abut against the regulating valve core through the piston, and the regulating valve core is pushed to abut against the oil inlet, so that the flow of the oil inlet is regulated; when the opening and closing degree of the valve needs to be increased, the control valve core is directly operated to move towards the direction of the first cavity, liquid in the third cavity is pumped into the second cavity along the control pipeline, at the moment, the oil pressure in the third cavity disappears, oil at the oil inlet pushes away the control valve core blocked at the oil inlet to flow out of the oil outlet, remote control is achieved, and the remote control valve and the regulating valve body can be installed at different positions as required during installation, so that single occupied space is small; the remote control valve can also be arranged in a place which is suitable for maintenance and environment, so that the remote control valve is convenient to overhaul subsequently, and the regulating valve body can meet the requirement of severe environment; the problem of the valve be not convenient for install and maintain is solved, the requirement of proportional flow control valve application under adverse circumstances has been satisfied.
Optionally, a return spring is installed in the fourth cavity, one end of the return spring is abutted to the end wall of the second installation cavity, and the other end of the return spring is abutted to one end, facing the ejector rod, of the piston.
By adopting the technical scheme, when the opening and closing degree of the valve is required to be increased, liquid in the third cavity is pumped into the second cavity, and then the liquid can abut against the piston and the ejector rod fixedly connected to the piston to slide towards the third cavity under the action of the reset spring, so that the abutting relation with the adjusting valve core is removed, and the liquid convenient for the oil inlet directly backs up the adjusting valve core to flow out of the oil outlet.
Optionally, the adjusting valve body is provided with a first vent communicated with the fourth cavity.
Through adopting above-mentioned technical scheme, can realize the intercommunicating relationship of fourth cavity and external world through first blow vent.
Optionally, a gap is left between the adjusting valve core and the inner wall of the first mounting cavity, so that when the adjusting valve core seals the oil inlet, the oil outlet is communicated with the first mounting cavity.
By adopting the technical scheme, when the ejector rod and the adjusting valve core are disengaged under the action of the reset spring, the adjusting valve core blocks the oil inlet under the action of pressure of the oil outlet, and if the pressure of the oil inlet is greater than the pressure of the oil outlet, the adjusting valve core is jacked open, so that the oil in the oil inlet can flow to the oil outlet and flow out of the oil outlet.
Optionally, the oil inlet and the oil outlet on the adjusting valve body are both in threaded connection with a clamping sleeve joint.
By adopting the technical scheme, the adjusting valve body is convenient to be connected with the hydraulic pipeline through the clamping sleeve connector.
Optionally, a second vent communicated with the first cavity is formed in the control valve body.
Through adopting above-mentioned technical scheme, can realize the intercommunication of external and first cavity through the second vent.
Optionally, a valve rod is fixedly connected to one side of the control valve core facing the first cavity, and one end of the valve rod, which is far away from the control valve core, extends to the outside.
By adopting the technical scheme, the control valve core is driven by the staff to slide in the control accommodating cavity through the valve rod.
Optionally, a power device for driving the control valve element to slide in the control accommodating cavity is arranged at one end, located outside, of the valve rod.
By adopting the technical scheme, the power device can drive the control valve core to slide in the control accommodating cavity, and the control is more convenient and labor-saving.
Optionally, the power device is an electric actuator or a pneumatic actuator.
Through adopting above-mentioned technical scheme, it is current product, and the purchase is convenient.
Optionally, the valve rod is in threaded connection with the control valve core.
By adopting the technical scheme, the valve rod and the control valve core can be conveniently mounted and dismounted, and the mounting and the dismounting are very convenient and flexible.
In summary, the present application includes at least one of the following beneficial technical effects:
the remote control valve and the regulating valve of the proportional flow regulating valve are arranged in a split mode and are connected through the control pipeline, so that the remote control valve and the regulating valve can be installed at proper positions according to needs during installation, the remote control valve is convenient to overhaul in the later period, the problem that the valve is inconvenient to install and maintain is solved, and the requirement of the proportional flow regulating valve in severe environment is met;
the arrangement of the return spring is convenient for directly driving the piston and the ejector rod to move towards the direction of the third cavity through the return spring after the pressure is relieved in the third cavity, so that the oil flowing from the oil inlet to the oil outlet flows more smoothly;
the power device is arranged, so that the control valve core can be directly driven to slide in the control valve body through the power device, the opening and closing degree of the adjusting valve body can be adjusted, and the operation is more labor-saving and convenient.
Drawings
Fig. 1 is a schematic structural view of the entire present application.
Fig. 2 is a schematic sectional view showing an internal structure of a remote control valve.
Fig. 3 is a schematic sectional view of the internal structure of the regulator valve body.
Description of the reference numerals: 1. a remote control valve; 11. a control valve body; 111. a second vent; 12. controlling the cavity; 121. a first cavity; 122. a second cavity; 13. a control valve core; 131. a third mounting groove; 132. a second seal ring; 133. a fourth mounting groove; 134. a second holder; 14. a valve stem; 2. a regulating valve body; 21. a regulating valve body; 211. an oil inlet; 212. an oil outlet; 213. a first vent; 22. a first mounting cavity; 23. a second mounting cavity; 231. a third cavity; 232. a fourth cavity; 24. adjusting the valve core; 25. a piston; 251. a first mounting groove; 252. a first seal ring; 253. a second mounting groove; 254. a first holder; 26. a top rod; 27. a return spring; 28. a first ferrule fitting; 3. a control conduit; 31. a second ferrule fitting; 4. and a power device.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a hydraulic pressure remote control proportional flow control valve. Referring to fig. 1, the proportional flow control valve includes a remote control valve 1, a control valve body 2, and a control pipe 3, and the control pipe 3 is connected between the remote control valve 1 and the control valve body 2 for controlling the opening and closing degree of the control valve body 2 through the remote control valve 1. During the use, can install remote control valve 1 in suitable position as required, then install governing valve body 2 on hydraulic pressure pipeline to connect control duct 3 between governing valve body 2 and remote control valve 1, wherein, control duct 3 can select suitable material and length as required. Because the remote control valve 1 and the regulating valve body 2 are respectively arranged at different positions, the single floor area can be reduced, and the installation is more convenient. And when carrying out the installation of remote control valve 1, can install remote control valve 1 in suitable position, can also satisfy the application of proportional flow control valve under adverse circumstances when being convenient for follow-up maintenance.
Referring to fig. 1 and 2, the remote control valve 1 includes a control valve body 11, a control cavity 12 is opened inside the control valve body 11, a control valve core 13 is slidably connected in the control cavity 12, and the control valve core 13 divides the inside of the control cavity 12 into a first cavity 121 located on one side of the control valve core 13 and a second cavity 122 located on the other side of the control valve core 13. The control pipeline 3 is communicated with the second cavity 122, and the control valve core 13 slides in the control accommodating cavity 12 by operation, so that the volume in the second cavity 122 can be changed, and the opening and closing degree of the valve body 2 can be controlled by the control pipeline 3.
Meanwhile, the control valve body 11 is provided with a second vent 111 communicated with the first cavity 121, the opening of the second vent 111 enables the first cavity 121 to be communicated with the outside atmosphere, when the volume of the second cavity 122 is changed by sliding the position of the control valve core 13 in the control accommodating cavity 12, the volume of the first cavity 121 is correspondingly changed, and the first cavity 121 discharges the gas in the first cavity 121 to the outside through the second vent 111 or sucks the outside gas into the first cavity 121 to adapt to the volume change of the first cavity 121.
Wherein, there is valve rod 14 at the one end threaded connection that control valve core 13 is located in second cavity 122, and the one end that valve rod 14 keeps away from control valve core 13 runs through control valve body 11 and exposes to the external world, and is provided with the power device 4 that drives valve rod 14 reciprocating motion at the one end that valve rod 14 is located outside control valve body 11. The power device 4 can drive the valve rod 14 to reciprocate, and the valve rod 14 drives the control valve core 13 to reciprocate in the control cavity 12, so that the volumes of the first cavity 121 and the second cavity 122 are changed.
Specifically, the power device 4 can be an electric actuator which is an existing product, can be purchased directly and is convenient to use. Of course, the power unit 4 may also be a pneumatic actuator or other type of actuator, as long as the control of the valve stem 14 is achieved.
Referring to fig. 1 and 3, the regulating valve body 2 includes a regulating valve body 21, a first mounting cavity 22 and a second mounting cavity 23 are formed in the regulating valve body 21, the first mounting cavity 22 and the second mounting cavity 23 are not communicated with each other, an oil inlet 211 and an oil outlet 212 communicated with the first mounting cavity 22 are formed in the regulating valve body 21, a regulating valve core 24 for plugging the oil inlet 211 is slidably connected in the first mounting cavity 22, and the regulating valve core 24 can be operated to slide in the first mounting cavity 22 to plug the oil inlet 211 and the oil outlet 212, so that the flow rate flowing from the oil inlet 211 to the oil outlet 212 is regulated, and the opening and closing degree of the regulating valve body 21 is regulated. A piston 25 is slidably connected in the second mounting cavity 23, a push rod 26 is fixedly connected to one side of the piston 25 facing the first mounting cavity 22, the push rod 26 penetrates through the first mounting cavity 22 and abuts against the regulating valve core 24, and the piston 25 can drive the push rod 26 to reciprocate through the position of the sliding piston 25 in the second mounting cavity 23, so that the position of the regulating valve core 24 abutting between the oil inlet 211 and the oil outlet 212 is controlled, and the opening and closing degree of the regulating valve body 21 is regulated.
The piston 25 divides the second installation cavity 23 into a third cavity 231 and a fourth cavity 232, the third cavity 231 is located on the side of the piston 25 away from the ram 26, and the fourth cavity 232 is located on the side of the piston 25 facing the ram 26. One end of the control pipe 3, which is far away from the control valve body 11, is communicated with the third cavity 231, and the regulating valve body 21 is provided with a first vent 213 communicated with the fourth cavity 232. When the valve is used, liquid is filled in the second cavity 122, the control pipeline 3 and the third cavity 231, when the electric actuator drives the control valve core 13 to slide towards the second cavity 122, the liquid in the second cavity 122 reaches the third cavity 231 through the control pipeline 3, the piston 25 is pushed to slide towards the fourth cavity 232, and the gas in the fourth cavity 232 is discharged to the outside through the first vent hole 213. At the moment, the ejector rod 26 also slides in the first mounting cavity 22 and pushes the regulating valve core 24 to slide towards the oil inlet 211, so that the circulation path from the oil inlet 211 to the oil outlet 212 is reduced; when the electric actuator drives the control valve core 13 to move towards the first cavity 121, the volume in the second cavity 122 increases, the liquid in the third cavity 231 is sucked into the second cavity 122 through the control pipeline 3, and the oil pressure in the third cavity 231 disappears at the moment. The thrust exerted on the regulating valve core 24 by the piston 25 through the mandril 26 also disappears, and the regulating valve core 24 can be pushed to slide in the first mounting cavity 22 under the pushing of the oil pressure at the oil inlet 211, so that the circulation path flowing from the oil inlet 211 to the oil outlet 212 is enlarged, and the opening and closing degree of the regulating valve body 21 is controlled.
Wherein, the liquid that packs in second cavity 122, control duct 3 and third cavity 231 can select for use fluid, because liquid compressibility is lower, so make the control to the valve body degree of opening and shutting more accurate.
Simultaneously, in order to facilitate piston 25 can reset fast after the inside decompression of third cavity 231, install reset spring 27 in fourth cavity 232, reset spring 27 cover is established on ejector pin 26, and 27 butt of reset spring one end butts on piston 25, and the other end butt is on fourth cavity 232 tip, after the decompression in third cavity 231, can butt piston 25 slide to third cavity 231 under the effect of reset spring 27 elasticity, realize quick reseing.
Referring to fig. 3, the oil inlet 211 and the oil outlet 212 are respectively disposed on two mutually perpendicular sides of the adjustment valve body 21, so that the oil inlet 211 and the oil outlet 212 are vertically communicated, the length direction of the first installation cavity 22 is the same as that of the oil inlet 211, the adjustment valve core 24 slides along the length direction of the first installation cavity 22, and a gap is left between the adjustment valve core 24 and the inner wall of the first installation cavity 22, so that when the adjustment valve core 24 slides to one end of the first installation cavity 22 close to the oil inlet 211 in the first installation cavity 22, the adjustment valve core 24 can seal the oil inlet 211, so that oil in the oil inlet 211 cannot flow to the oil outlet 212, and oil in the oil outlet 212 reaches the first installation cavity 22 through the gap between the adjustment valve core 24 and the side wall of the first installation cavity 22. When the piston 25 and the carrier rod 26 slide towards the direction of the third cavity 231 under the action of the return spring 27 until the carrier rod 26 and the regulating valve core 24 are released from abutting relation, the regulating valve core 24 abuts at the oil inlet 211 under the action of the oil pressure of the oil outlet 212, when the pressure at the oil inlet 211 is greater than the pressure value at the oil outlet 212, the oil liquid at the oil inlet 211 pushes the regulating valve core 24 open, so that the oil inlet 211 is communicated with the oil outlet 212, the oil at the oil inlet 211 is discharged from the oil outlet 212, and the flow rates of the oil inlet 211 and the oil outlet 212 of the regulating valve body 2 are maintained to be constant.
Referring to fig. 3, in order to facilitate the installation of the regulating valve body 21 in the hydraulic pipeline, the oil inlet 211 and the oil outlet 212 of the regulating valve body 21 are both in threaded connection with the first ferrule adapter 28, during installation, the hydraulic pipeline can be directly connected with the regulating valve body 21 through the first ferrule adapter 28, and the installation is more convenient.
Referring to fig. 2 and 3, in order to facilitate the connection of the two ends of the control pipe 3 with the control valve body 11 and the regulating valve body 21, a second ferrule connector 31 is installed on the control valve body 11 and the regulating valve body 21, the second ferrule connector 31 on the control valve body 11 is located at a side close to the second cavity 122 and is communicated with the second cavity 122, and the second ferrule connector 31 on the regulating valve body 21 is located at a side close to the third cavity 231 and is communicated with the third cavity 231. When connecting the two ends of the control conduit 3 with the two second ferrule fittings 31, respectively, a sealed communication of the second cavity 122, the control conduit 3 and the third cavity 231 can be achieved.
Referring to fig. 3, in order to prevent the liquid in the third chamber 231 from flowing from between the piston 25 and the inner wall of the second mounting chamber 23 to the fourth chamber 232 and affecting the control of the regulating valve body 21, a first sealing ring 252 is mounted between the side wall of the piston 25 and the inner wall of the second mounting chamber 23, specifically, a first mounting groove 251 for mounting the first sealing ring 252 may be formed in the side wall of the piston 25, and the first sealing ring 252 may be located in the first mounting groove 251 to seal the side wall of the piston 25.
Meanwhile, in order to enable the piston 25 to slide more smoothly in the second mounting cavity 23, the second mounting groove 253 is formed in the side wall of the piston 25, one second mounting groove 253 can be formed, and a plurality of second mounting grooves can also be formed along the sliding direction of the piston 25, two second mounting grooves 253 are formed for illustration in the present application, a first retaining frame 254 is installed in each second mounting groove 253, a rolling body is placed in each first retaining frame 254, rolling friction can be achieved between the piston 25 and the inner wall of the second mounting cavity 23, friction between the piston 25 and the inner wall of the second mounting cavity 23 is greatly reduced, and the piston 25 can slide more smoothly.
Referring to fig. 2, in order to ensure the sealing of the second cavity 122 and prevent the liquid in the second cavity 122 from sliding into the first cavity 121 from between the control valve element 13 and the inner wall of the control cavity 12, a third installation groove 131 is formed in the side wall of the control valve element 13, and a second sealing ring 132 is installed in the third installation groove 131. Sealing between the control valve element 13 and the inner wall of the control volume 12 is achieved by means of a second sealing ring 132.
Meanwhile, the side wall of the control valve element 13 is further provided with two fourth mounting grooves 133, the fourth mounting grooves 133 are spaced along the sliding direction of the control valve element 13, each fourth mounting groove 133 is provided with a second retainer 134, and a rolling body is also placed in each second retainer 134, so that the friction force between the control valve element 13 and the control accommodating cavity 12 can be reduced.
The implementation principle of the hydraulic remote control proportional flow control valve in the embodiment of the application is as follows: when being installed, the utility model can be installed as required
The remote control valve 1 and the regulating valve body 2 are installed at appropriate positions, and the valve body can be driven to slide in a reciprocating manner through the electric actuator, so that the control valve core 13 is driven to slide in the control accommodating cavity 12. When the control valve core 13 slides in the control accommodating cavity 12, the volume of the second cavity 122 can be changed, so that the piston 25 is pushed to slide in the second mounting cavity 23, the ejector rod 26 abuts against the regulating valve core 24, the flow rate flowing from the oil inlet 211 to the oil outlet 212 can be controlled through the regulating valve core 24, and the opening and closing degree of the regulating valve body 21 is controlled. Because the remote control valve 1 and the regulating valve body 2 can be installed at different positions during installation, the problem of inconvenient installation and maintenance is solved, and the requirement of the proportional flow regulating valve under severe environment is met.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a hydraulic pressure remote control proportion flow control valve which characterized in that: comprises a remote control valve (1), a control pipeline (3) and a regulating valve body (2);
the remote control valve (1) comprises a control valve body (11), a control cavity (12) is arranged in the control valve body (11), a control valve core (13) is connected in the control cavity (12) in a sliding mode, and the control cavity (12) comprises a first cavity (121) located on one side of the control valve core (13) and a second cavity (122) located on the other side of the control valve core (13);
the regulating valve body (2) comprises a regulating valve body (21), a first mounting cavity (22) and a second mounting cavity (23) are formed inside the regulating valve body (21), an oil inlet (211) and an oil outlet (212) communicated with the first mounting cavity (22) are formed in the regulating valve body (21), and a regulating valve core (24) for regulating the flow of liquid flowing from the oil inlet (211) to the oil outlet (212) is connected in the first mounting cavity (22) in a sliding mode; a piston (25) is connected in the second mounting cavity (23) in a sliding manner, one end, facing the adjusting valve core (24), of the piston (25) is fixedly connected with a push rod (26), the push rod (26) penetrates through the first mounting cavity (22) and abuts against the adjusting valve core (24) so as to control the degree of the adjusting valve core (24) for plugging between an oil inlet (211) and an oil outlet (212), one side, away from the push rod (26), of the piston (25) in the second mounting cavity (23) is called a third cavity (231), and one side, facing the push rod (26), of the piston (25) in the second mounting cavity (23) is called a fourth cavity (232);
the control pipeline (3) is communicated between the second cavity (122) and the third cavity (231), and the first cavity (121) and the fourth cavity (232) are both communicated with the outside;
the volume in the second cavity (122) can be changed by operating the control valve core (13) to slide in the control cavity (12), so that the opening and closing degree of the regulating valve body (2) is controlled through the control pipeline (3).
2. The proportional flow control valve of claim 1, wherein: a return spring (27) is installed in the fourth cavity (232), one end of the return spring (27) is abutted to the end wall of the second installation cavity (23), and the other end of the return spring (27) is abutted to one end, facing the ejector rod (26), of the piston (25).
3. The proportional flow control valve of claim 1, wherein: and a first air vent (213) communicated with the fourth cavity (232) is formed in the regulating valve body (21).
4. The proportional flow control valve of claim 1, wherein: a gap is reserved between the adjusting valve core (24) and the inner wall of the first installation cavity (22) so that when the adjusting valve core (24) closes the oil inlet (211), the oil outlet (212) is communicated with the first installation cavity (22).
5. The proportional flow control valve of claim 1, wherein: clamping sleeve joints are in threaded connection with an oil inlet (211) and an oil outlet (212) on the adjusting valve body (21).
6. The proportional flow control valve of claim 1, wherein: and a second vent (111) communicated with the first cavity (121) is formed in the control valve body (11).
7. The proportional flow control valve of claim 1, wherein: and a valve rod (14) is fixedly connected to one side, facing the first cavity (121), of the control valve core (13), and one end, far away from the control valve core (13), of the valve rod (14) extends to the outside.
8. The proportional flow control valve of claim 7, wherein: and one end of the valve rod (14) positioned outside is provided with a power device (4) for driving the control valve core (13) to slide in the control cavity (12).
9. The proportional flow control valve of claim 8, wherein: the power device (4) is an electric actuator or a pneumatic actuator.
10. The proportional flow control valve of claim 7, wherein: the valve rod (14) is in threaded connection with the control valve core (13).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111074251.0A CN113775587B (en) | 2021-09-14 | 2021-09-14 | Hydraulic remote control proportional flow control valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111074251.0A CN113775587B (en) | 2021-09-14 | 2021-09-14 | Hydraulic remote control proportional flow control valve |
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| CN113775587A CN113775587A (en) | 2021-12-10 |
| CN113775587B true CN113775587B (en) | 2022-05-10 |
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| CN113236802A (en) * | 2021-06-02 | 2021-08-10 | 中国长江三峡集团有限公司 | Pilot type differential pressure pipe burst safety valve and method |
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| CN113236802A (en) * | 2021-06-02 | 2021-08-10 | 中国长江三峡集团有限公司 | Pilot type differential pressure pipe burst safety valve and method |
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