CN214789337U

CN214789337U - Pressure stabilizing valve

Info

Publication number: CN214789337U
Application number: CN202121092021.2U
Authority: CN
Inventors: 郑志勇; 李德松; 郑桂凤; 王盛; 徐正家; 周兴良
Original assignee: Zhejiang Best And Honest Electromechanics Co ltd
Current assignee: Zhejiang Best And Honest Electromechanics Co ltd
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2021-11-19
Anticipated expiration: 2031-05-20

Abstract

The utility model provides a surge damping valve belongs to valve technical field. The problems that assembly is difficult and all parts are easy to match in place are solved. The pressure regulating valve comprises a valve body, a pressure regulating core rod, a diaphragm, a pressure guiding channel and an electromagnetic switch, wherein the valve body is provided with an inlet, an outlet and a water passing cavity communicated with the inlet and the outlet, the valve body is detachably connected with a valve seat, the valve seat comprises a seat body and a top cover fixed with the seat body through a fastener, the edge of the diaphragm is clamped between the seat body and the top cover and a first pressure guiding cavity is formed between the diaphragm and the top cover, the pressure regulating core rod penetrates through the seat body, the other end of the pressure regulating core rod is positioned in the valve body and can plug the connection part of the inlet and the water passing cavity when the pressure in the first pressure guiding cavity is increased, the pressure guiding channel and the electromagnetic switch are both arranged on the valve seat and are communicated with the first pressure guiding cavity and the water passing cavity, and a pressure guiding hole communicated with the inlet and the first pressure guiding cavity is arranged on the pressure regulating core rod in an axial penetrating mode. It has advantages such as assembly efficiency is high, control is more accurate.

Description

Pressure stabilizing valve

Technical Field

The utility model belongs to the technical field of the valve, a surge damping valve is related to.

Background

In the operation process of the pipeline, the water supply pressure can be changed constantly, so that the pressure fluctuation of the outlet can be caused to influence the service life of rear equipment, and therefore a pressure stabilizing valve appears in the market and can keep the outlet pressure within a set range under the condition that the inlet pressure is changed constantly. The pilot-operated solenoid valve disclosed in patent application No. 201911329415.2 comprises a valve body, wherein a liquid inlet and a liquid outlet are respectively arranged on two sides of the valve body, and a communication port for communicating the liquid inlet with the liquid outlet is arranged in the valve body; the main valve component is arranged inside the valve body in a sliding mode, a liquid inlet hole is formed in the main valve component in a penetrating mode, the liquid inlet hole is communicated with a liquid inlet of the valve body, and the main valve component is used for plugging the communication port; the diaphragm is a flexible part and is arranged on the top of the main valve component; the valve cover is covered on the top of the valve body, the valve cover and the diaphragm are enclosed to form a control cavity, the control cavity is communicated with the liquid inlet hole, a pilot channel is arranged in the valve cover, and the pilot channel is respectively communicated with the control cavity and the liquid outlet; the positioning piece is fixed at the top of the main valve component, the top surface of the positioning piece is abutted against the inner wall of the valve cover so as to limit the displacement of the main valve component, the bottom surface of the positioning piece is used for pressing the diaphragm on the main valve component, and the positioning piece is provided with an elastic piece which is used for resetting the main valve component; and the pilot assembly is arranged on the valve cover and used for communicating or stopping the pilot channel.

When the pressure of the liquid inlet is increased, the liquid inlet pressure is led into the control cavity through the liquid inlet hole, at the moment, the pilot assembly does not work, so that the pressure in the control cavity is increased, and the diaphragm is driven to drive the main valve assembly to act to seal the communication port; then, the pilot assembly conducts the pilot channel, so that the pressure in the control cavity can be released into the liquid outlet through the pilot channel, the pressure of the liquid inlet and the pressure of the liquid outlet can be kept balanced, and then the main valve assembly opens the communication port under the action of the hydraulic inlet pressure to realize water passing. However, the above-mentioned pilot-operated solenoid valve also has obvious disadvantages: when the equipment, each part will adorn the valve body in proper order in the back, fix by the valve gap again and realize the encapsulation at the valve body top, but the valve body inner space is narrower and inner structure is more complicated, and the actual equipment is got up very trouble, and each part still is in loose state when fixing the valve gap moreover, will scatter carelessly or appear the dislocation when fixing etc. and cause the cooperation not in place.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that prior art exists, provide a surge damping valve, solved the problem that assembly difficulty, each part cooperate not in place easily.

The purpose of the utility model can be realized by the following technical proposal:

the pressure stabilizing valve comprises a valve body, a pressure regulating core rod, a membrane fixed at one end of the pressure regulating core rod, a pressure guide channel and an electromagnetic switch capable of controlling the communication or the partition of the pressure guide channel, the valve body is provided with an inlet, an outlet and a water passing cavity which communicates the inlet and the outlet, the valve body is detachably connected with a valve seat, the pressure regulating valve is characterized in that the valve seat comprises a seat body and a top cover fixed with the seat body through a fastener, the edge of the diaphragm is clamped between the seat body and the top cover, a first pressure guide cavity is formed between the diaphragm and the top cover, the pressure regulating core rod penetrates through the seat body, the other end of the pressure regulating core rod is positioned in the valve body and can seal the connection part of an inlet and a water passing cavity when the pressure in the first pressure guide cavity is increased, the pressure guide channel and the electromagnetic switch are arranged on the valve seat and are communicated with the first pressure guide cavity and the water passing cavity, and a pressure guide hole communicated with the inlet and the first pressure guide cavity is arranged on the pressure regulating core rod in an axial penetrating mode.

When the inlet pressure is increased, the inlet pressure is led into the first pressure guide cavity from the pressure guide hole, the electromagnetic switch cuts off the pressure guide channel at the moment to increase the pressure in the first pressure guide cavity, and then the diaphragm drives the pressure regulating core rod to move to block the connection of the inlet and the water passing cavity. Then, the pressure guide channel is opened by the electromagnetic switch, so that the pressure in the pressure guide cavity is released to the outlet through the pressure guide channel and the water passing cavity, the pressure at the inlet is balanced with the pressure at the outlet, and the pressure regulating core rod moves under the action of the inlet pressure and opens the joint of the inlet and the water passing cavity.

In the pressure stabilizing valve, the valve seat is formed by fixing the seat body and the top cover through a fastener, the edge of the membrane is clamped between the seat body and the top cover, the pressure regulating core rod penetrates through the seat body, one end of the pressure regulating core rod is fixed with the membrane, and the pressure guide channel and the electromagnetic switch are arranged on the valve seat. Therefore, the assembly device can be assembled without the limitation caused by the narrow inner space of the valve body and the complex inner structure, the assembly efficiency is well improved, and the matching between the components can be more accurate.

In the pressure stabilizing valve, the base body is provided with a cylindrical connecting part, the valve body is provided with a connecting port which is communicated with the water passing cavity and is arranged along the same central line with the inlet, the connecting part is in threaded connection with the connecting port, the pressure regulating core rod penetrates through the connecting part, a matching plane is arranged outside the valve body, the connecting port is positioned on the matching plane, and a convex shoulder which is abutted against the matching plane to form hard sealing is arranged outside the connecting part.

In the pressure stabilizing valve, the pressure regulating core rod comprises a rod body and a sealing seat fixed at one end of the rod body, the diaphragm is fixed at the other end of the rod body, the rod body is sleeved with a return spring, and two ends of the return spring are respectively abutted against the connecting part and the sealing seat.

In the pressure stabilizing valve, the pressure guide channel comprises a first part communicated with the pressure guide cavity I, a pressure guide cavity II formed between the diaphragm and the seat body, a second part and a connecting hole, the second part and the connecting hole are both communicated with the pressure guide cavity II, the control position of the electromagnetic switch is arranged between the first part and the second part, the connecting hole is communicated with the water passing cavity, the rod body penetrates through the connecting hole, and a pressure relief gap is formed between the rod body and the connecting hole.

In the pressure stabilizing valve, the connecting hole is a circular hole, and the cross section of the rod body is in a regular hexagon shape.

In the pressure stabilizing valve, the first part is arranged on the top cover, the hole at one end of the first part is arranged on the wall of the first pressure guide cavity, the top cover is provided with an installation opening, the other port of the first part and the one port of the second part are both positioned on the inner wall of the installation opening, the other port of the second part is arranged on the wall of the second pressure guide cavity, the electromagnetic switch is fixed at the installation opening and can seal the port of the second part positioned on the inner wall of the installation opening.

In the pressure stabilizing valve, the top cover is provided with a mounting hole which is arranged along the same central line as the connecting hole in a penetrating manner, an orifice at one end of the mounting hole is positioned on the inner wall of the first pressure guide cavity, and a control rod is connected in the mounting hole through threads.

The control rod is in threaded connection with the mounting hole, and then the control rod can be rotated to lift, so that the distance between the control rod and the pressure regulating core rod is controlled to realize the opening or closing function of the whole valve.

In the pressure stabilizing valve, the top cover is further provided with a pressure relief opening connected with the pressure guide cavity I, the pressure relief opening is in threaded connection with a pressure relief plug, and a pressure relief hole is formed in the side part, at the threaded part, of the pressure relief plug in a penetrating mode.

The timing opening can be realized through the electromagnetic switch, and the manual opening can be realized through the pressure relief plug. Specifically, when the pressure in the pressure guide cavity is increased and the electromagnetic switch is not switched on, the pressure in the pressure guide cavity can be released to the outside through the pressure release hole only by rotating the pressure release plug until the pressure release hole is positioned outside the pressure release port.

In the pressure stabilizing valve, the inlet and the outlet are arranged in parallel and are positioned on the same side of the valve body, a matching port parallel to the connector is further arranged on the valve body, the connector and the matching port are positioned on the same side of the valve body, a transition cavity communicated with the matching port and the outlet is arranged in the valve body, a water passing port is arranged between the water passing cavity and the transition cavity, the water passing port and the matching port are arranged on the same central line, the matching port is in threaded connection with an end cover, a guide post is arranged on the inner side of the end cover, a non-return core is connected to the outer side of the guide post in a sliding mode, a non-return spring is sleeved on the guide post, and the non-return core is abutted against the water passing port to form sealing under the elastic force action of the non-return spring.

Compared with the prior art, the pressure stabilizing valve has the following advantages:

1. the diaphragm, the pressure guide channel, the pressure regulating core rod, the electromagnetic switch and the valve seat are assembled into a whole, then the valve seat is connected to a connecting port of the valve body, and the whole pressure stabilizing valve is assembled;

2. the moving distance of the pressure regulating core rod can be controlled by arranging the control rod so as to realize the opening or closing function of the whole valve;

3. the timing opening can be realized by utilizing the electromagnetic switch, the manual opening can be realized by the pressure relief plug, and the requirements of different working conditions are met.

Drawings

FIG. 1 is a schematic view of the present surge valve.

Fig. 2 is a cross-sectional view of the present surge valve.

Fig. 3 is a cross-sectional view of the valve body of the present surge damping valve.

FIG. 4 is an overall schematic view of the pressure stabilizing valve assembled by the pressure regulating core rod, the diaphragm and the valve seat.

Fig. 5 is a cross-sectional view of fig. 4 (without the electromagnetic switch connected).

Fig. 6 is a transverse cross-sectional view between the stem and the valve seat in the present surge damping valve.

In the figure, 1, a valve body; 1a, an inlet; 1b, an outlet; 1c, a water passing cavity; 1d, a connecting port; 1e, a matching plane; 1f, a matching port; 1g, a water outlet; 1h, a transition cavity; 2. pressure regulating core bar; 2a, a rod body; 2a1, pressure guide holes; 2b, a sealing seat; 3. a membrane; 4. a first pressure guide cavity; 5. a valve seat; 5a, a seat body; 5a1, a connecting part; 5a11, shoulder; 5b, a top cover; 5b1, pressure relief vent; 5b2, mounting port; 6. a pressure guide channel; 6a, a first part; 6b, a pressure guide cavity II; 6c, a second part; 6d, connecting holes; 7. an electromagnetic switch; 8. a return spring; 9. a control lever; 10. a hand wheel; 11. a pressure relief plug; 11a, a pressure relief hole; 12. an end cap; 12a, a guide post; 13. a non-return core; 14. a check spring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2 and 3, the pressure stabilizing valve comprises a valve body 1, wherein the valve body 1 is provided with an inlet 1a, an outlet 1b and a water passing cavity 1c for communicating the inlet 1a with the outlet 1b, the inlet 1a is parallel to the outlet 1b, and the inlet 1a and the outlet 1b are positioned on the same side of the valve body 1. The valve body 1 is also provided with a connecting port 1d communicated with the water passing cavity 1c, the connecting port 1d and the inlet 1a are arranged on the same central line, and the connecting port 1d is detachably connected with a valve seat 5. Wear to be equipped with pressure regulating core bar 2 in the disk seat 5, 2 one ends of pressure regulating core bar are fixed with diaphragm 3, diaphragm 3 is located disk seat 5 and forms in diaphragm 3 one side and leads pressure chamber 4, the pressure regulating core bar 2 other end is located valve body 1 and can be when leading the pressure increase in pressure chamber 4 with import 1a and the shutoff of crossing water cavity 1c junction, it is provided with the pressure hole 2a1 of leading of importing 1a and leading pressure chamber 4 intercommunication to run through along the axial on the pressure regulating core bar 2. Wherein, still be equipped with in the disk seat 5 and lead and press passageway 6, lead and press passageway 6 and lead pressure chamber 4 and cross water cavity 1c intercommunication, be connected with on the disk seat 5 and can control the electromagnetic switch 7 that leads pressure passageway 6 intercommunication or cut off, electromagnetic switch 7 can be the same with in the comparison document, and it is no longer repeated here.

Further, as shown in fig. 2 and 5, the pressure guide passage 6 includes a first portion 6a communicating with the pressure guide chamber one 4, a pressure guide chamber two 6b formed between the other side of the diaphragm 3 and the valve seat 5, and a second portion 6c and a connection hole 6d both communicating with the pressure guide chamber two 6b, and the control position of the electromagnetic switch 7 is set between the first portion 6a and the second portion 6 c. Connecting hole 6d is linked together with crossing water cavity 1c, and the pressure regulating pole includes the body of rod 2a and is fixed in the seal receptacle 2b of body of rod 2a one end, and diaphragm 3 is fixed in the other end of the body of rod 2a, and the body of rod 2a passes connecting hole 6d and forms the pressure release clearance between the two. Specifically, as shown in fig. 6, the connection hole 6d is a circular hole, and the cross section of the rod body 2a is a regular hexagon.

In the present embodiment, as shown in fig. 2, 4 and 5, the valve seat 5 includes a seat body 5a and a top cover 5b fixed to the seat body 5a by a fastener, and the edge of the diaphragm 3 is clamped between the seat body 5a and the top cover 5 b. The first part 6a is arranged on the top cover 5b, an end hole of the first part is arranged on the cavity wall of the first pressure guide cavity 4, the top cover 5b is provided with an installation hole 5b2, the other port of the first part 6a and one port of the second part 6c are both positioned on the inner wall of the installation hole 5b2, the other port of the second part 6c is arranged on the cavity wall of the second pressure guide cavity 6b, the electromagnetic switch 7 is fixed at the installation hole 5b2, and the electromagnetic switch 7 can seal one end hole of the second part 6c positioned on the inner wall of the installation hole 5b 2. The first pressure guide cavity 4 is formed by the diaphragm 3 and the top cover 5b, the second pressure guide cavity 6b is formed by the diaphragm 3 and the seat body 5a, and the connecting hole 6d is formed in the seat body 5 a. The seat body 5a has a cylindrical connecting portion 5a1, and the connecting portion 5a1 is screwed to the connecting port 1 d. The rod body 2a penetrates through the connecting part 5a1, the valve body 1 is externally provided with a matching plane 1e, the connecting port 1d is positioned on the matching plane 1e, and the connecting part 5a1 is externally provided with a shoulder 5a11 which abuts against the matching plane 1e to form a hard seal. The rod body 2a is sleeved with a return spring 8, and two ends of the return spring 8 respectively abut against the connecting part 5a1 and the sealing seat 2 b.

When the pressure of the inlet 1a is increased, the pressure of the inlet 1a is led into the pressure guide cavity I4 from the pressure guide hole 2a1, at the moment, the electromagnetic switch 7 separates the pressure guide channel 6 to increase the pressure in the pressure guide cavity I4, and then the diaphragm 3 drives the pressure regulating core rod 2 to move to seal the joint of the inlet 1a and the water passing cavity 1 c. Afterwards, the pressure guide channel 6 is opened by the electromagnetic switch 7, so that the pressure in the pressure guide cavity one 4 is released to the outlet 1b through the pressure guide channel 6 and the water passing cavity 1c, the pressure at the inlet 1a and the pressure at the outlet 1b can be balanced quickly, and thus the pressure regulating core rod 2 moves under the pressure action of the inlet 1a and opens the joint of the inlet 1a and the water passing cavity 1 c.

Further, as shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, a mounting hole which is arranged on the same center line as the connecting hole 6d is arranged on the top cover 5b in a penetrating manner, an end opening of the mounting hole is located on the inner wall of the pressure guide cavity one 4, a control rod 9 is connected in the mounting hole in a threaded manner, and the control rod 9 extends out of the seat body 5a and is connected with a hand wheel 10. The top cover 5b is further provided with a pressure relief opening 5b1 connected with the pressure guide cavity I4, a pressure relief plug 11 is connected to the position of the pressure relief opening 5b1 through a thread, and a pressure relief hole 11a is formed in the side portion, at the thread, of the pressure relief plug 11 in a penetrating mode.

As shown in fig. 2 and 3, the inlet 1a and the outlet 1b are arranged in parallel and located on the same side of the valve body 1, the valve body 1 is further provided with a matching port 1f with a parallel connecting port 1d, the connecting port 1d and the matching port 1f are located on the same side of the valve body 1, a transition cavity 1h communicating the matching port 1f and the outlet 1b is arranged in the valve body 1, a water passing port 1g is arranged between the water passing cavity 1c and the transition cavity, the water passing port 1g and the matching port 1f are arranged on the same central line, an end cover 12 is in threaded connection with the matching port 1f, the inner side of the end cover 12 is provided with a guide post 12a, a non-return core 13 is in sliding connection with the outer side of the guide post 12a, the guide post 12a is sleeved with a non-return spring 14, two ends of the non-return spring 14 respectively abut against the end cover 12 and the non-return core 13, and the non-return core 13 abuts against the position of the water passing port 1g under the elastic force of the non-return spring 14 to form a seal.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The pressure stabilizing valve comprises a valve body (1), a pressure regulating core rod (2), a membrane (3) fixed at one end of the pressure regulating core rod (2), a pressure guide channel (6) and an electromagnetic switch (7) capable of controlling the communication or the partition of the pressure guide channel (6), wherein the valve body (1) is provided with an inlet (1a), an outlet (1b) and a water passing cavity (1c) communicating the inlet (1a) with the outlet (1b), the valve body (1) is detachably connected with a valve seat (5), and is characterized in that the valve seat (5) comprises a seat body (5a) and a top cover (5b) fixed with the seat body (5a) through a fastener, the edge of the membrane (3) is clamped between the seat body (5a) and the top cover (5b) and a pressure guide cavity I (4) is formed between the membrane (3) and the top cover (5b), and the pressure regulating core rod (2) is arranged in the seat body (5a) in a penetrating way, the other end of the pressure regulating core rod (2) is positioned in the valve body (1) and can plug the joint of the inlet (1a) and the water passing cavity (1c) when the pressure in the pressure guiding cavity (4) is increased, the pressure guiding channel (6) and the electromagnetic switch (7) are arranged on the valve seat (5) and the pressure guiding channel (6) is used for communicating the pressure guiding cavity (4) with the water passing cavity (1c), and the pressure regulating core rod (2) is axially provided with a pressure guiding hole (2a1) for communicating the inlet (1a) with the pressure guiding cavity (4) in a penetrating manner.

2. The pressure stabilizing valve according to claim 1, wherein the seat body (5a) is provided with a cylindrical connecting part (5a1), the valve body (1) is provided with a connecting port (1d) which is communicated with the water passing cavity (1c) and is arranged along the same central line with the inlet (1a), the connecting part (5a1) is in threaded connection with the connecting port (1d), the pressure regulating core rod (2) penetrates through the connecting part (5a1), the valve body (1) is externally provided with a matching plane (1e), the connecting port (1d) is positioned on the matching plane (1e), and the connecting part (5a1) is externally provided with a convex shoulder (5a11) which is abutted against the matching plane (1e) to form a hard seal.

3. A pressure stabilizing valve according to claim 2, wherein the pressure regulating core rod (2) comprises a rod body (2a) and a sealing seat (2b) fixed at one end of the rod body (2a), the diaphragm (3) is fixed at the other end of the rod body (2a), a return spring (8) is sleeved outside the rod body (2a), and two ends of the return spring (8) are respectively abutted against the connecting part (5a1) and the sealing seat (2 b).

4. The surge-stabilizing valve according to claim 3, wherein the pressure-guiding passage (6) comprises a first part (6a) communicated with the pressure-guiding chamber I (4), a pressure-guiding chamber II (6b) formed between the diaphragm (3) and the seat body (5a), a second part (6c) and a connecting hole (6d) which are both communicated with the pressure-guiding chamber II (6b), the control position of the electromagnetic switch (7) is arranged between the first part (6a) and the second part (6c), the connecting hole (6d) is communicated with the water passing chamber (1c), and the rod body (2a) passes through the connecting hole (6d) and forms a pressure-relieving gap therebetween.

5. A pressure maintaining valve according to claim 4, characterized in that the connecting hole (6d) is a circular hole, and the cross section of the rod body (2a) is in a regular hexagon shape.

6. The pressure maintaining valve according to claim 4, characterized in that the first part (6a) is arranged on the top cover (5b) and one end of the first part is provided with a hole on the wall of the first pressure guide cavity (4), the top cover (5b) is provided with a mounting port (5b2) and the other end of the first part (6a) and the other end of the second part (6c) are both arranged on the inner wall of the mounting port (5b2), the other end of the second part (6c) is arranged on the wall of the second pressure guide cavity (6b), the electromagnetic switch (7) is fixed at the mounting port (5b2) and the electromagnetic switch (7) can seal one end of the second part (6c) on the inner wall of the mounting port (5b 2).

7. A pressure stabilizing valve according to claim 5, characterized in that a mounting hole arranged on the same center line as the connecting hole (6d) is arranged on the top cover (5b) in a penetrating manner, an opening at one end of the mounting hole is positioned on the inner wall of the first pressure guide cavity (4), and a control rod (9) is connected in the mounting hole in a threaded manner.

8. A pressure stabilizing valve according to claim 1, 2, 3 or 4, characterized in that the top cover (5b) is further provided with a pressure relief opening (5b1) connected with the pressure guide cavity I (4), a pressure relief plug (11) is in threaded connection with the pressure relief opening (5b1), and a pressure relief hole (11a) is formed in the threaded side portion of the pressure relief plug (11).

9. The pressure stabilizing valve according to claim 2, wherein the inlet (1a) and the outlet (1b) are arranged in parallel and are positioned at the same side of the valve body (1), the valve body (1) is further provided with a matching port (1f) parallel to the connecting port (1d), the connecting port (1d) and the matching port (1f) are positioned at the same side of the valve body (1), the valve body (1) is internally provided with a transition cavity (1h) communicated with the matching port (1f) and the outlet (1b), a water passing port (1g) is arranged between the water passing cavity (1c) and the transition cavity, the water passing port (1g) and the matching port (1f) are arranged at the same central line, the matching port (1f) is in threaded connection with an end cover (12), the inner side of the end cover (12) is provided with a guide column (12a), the guide column (12a) is externally connected with a check core (13) in a sliding manner, and a check spring (14) is sleeved on the guide column (12a), the non-return core (13) is abutted against the position of the water passing opening (1g) to form sealing under the elastic force of the non-return spring (14).