CN211117830U

CN211117830U - Regulating valve and differential pressure flow conversion system

Info

Publication number: CN211117830U
Application number: CN201922286871.5U
Authority: CN
Inventors: 高继焕
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-07-28
Anticipated expiration: 2029-12-18

Abstract

The utility model provides a governing valve and pressure differential flow conversion system belongs to fluid control technical field, including the valve body, the valve body has inhalant canal, exhalant canal and valve pocket, still includes elastic diaphragm, separation groove, slide bar, sealing plug and spring unit. The elastic diaphragm is fixedly arranged in the valve cavity and divides the valve cavity into an independent circulation cavity and an induction cavity, the circulation cavity is communicated with the water inlet channel and the water outlet channel, and the induction cavity is communicated with the water supply pipeline. The separation groove is arranged in the circulation cavity, and the side wall of the separation groove is provided with at least one connecting hole. One end of the sliding rod is fixedly connected with the elastic diaphragm. The sealing plugs are arranged in the corresponding connecting holes. The resilience force of the spring assembly is used for pushing the sliding rod towards the direction of the induction cavity, and the resilience force of the spring assembly is adjustable within a preset range. The utility model provides a governing valve and pressure differential flow conversion system has solved single governing valve and can not make water supply system possess the problem of pressure differential regulatory function and flow control function simultaneously.

Description

Regulating valve and differential pressure flow conversion system

Technical Field

The utility model belongs to the technical field of fluid control, more specifically say, relate to a governing valve and pressure differential flow conversion system.

Background

The existing differential pressure valve and flow valve are formed by casting and welding, due to the requirement of environmental protection, the equipment investment is too much, the cost is high, the differential pressure valve and the flow valve have different working differential pressure ranges, so the differential pressure valve and the flow valve can not be mutually replaced, and only the differential pressure valve or only the flow valve can not enable a water supply system to have the differential pressure adjusting function and the flow adjusting function at the same time for the water supply system needing to alternately use the differential pressure adjusting function and the flow adjusting function. And if adopt differential pressure valve and flow valve simultaneously, not only the cost is higher and the connecting line is also comparatively complicated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a governing valve and pressure differential flow conversion system aims at solving single governing valve and can not make water supply system possess the problem of pressure differential regulatory function and flow control function simultaneously.

In order to achieve the above object, the utility model adopts the following technical scheme: the regulating valve comprises a valve body, an elastic diaphragm, a separation groove, a sliding rod, a sealing plug and a spring assembly, wherein the valve body is provided with a water inlet channel, a water outlet channel and a valve cavity. The elastic membrane is fixedly arranged in the valve cavity and divides the valve cavity into an independent circulation cavity and an induction cavity, the circulation cavity is communicated with the water inlet channel and the water outlet channel, and the induction cavity is used for communicating the middle part of the water supply pipeline or communicating one end of the water supply pipeline, which corresponds to the water inlet channel. The separation groove is arranged in the circulation cavity, the opening end of the separation groove faces the water outlet channel and is fixedly connected with the water outlet channel in a sealing mode, and at least one connecting hole facing the elastic membrane is formed in the side wall of the separation groove. The sliding rod is coaxially arranged with the connecting hole, one end of the sliding rod is fixedly connected with the elastic diaphragm, and the sliding rod can move towards the induction cavity or the circulation cavity along with the deformation of the elastic diaphragm. The number of the sealing plugs corresponds to the number of the connecting holes and is fixedly connected with the sliding rod, the sealing plugs are arranged in the corresponding connecting holes, and the sealing plugs can adjust the flow of the corresponding connecting holes along with the movement of the sliding rod. The resilience force of the spring assembly is used for pushing the sliding rod towards the direction of the induction cavity, and the resilience force of the spring assembly is adjustable within a preset range.

As another embodiment of the present application, the number of the connection holes is two, and the two connection holes are respectively disposed on two opposite side walls of the separation groove, and the two connection holes are coaxially disposed.

As another embodiment of this application, be fixed with on the slide bar and follow the radial outside convex stopper of connecting hole, the stopper is seted up towards the recess of connecting hole, and one of them sealing plug is located in the recess, the slide bar towards when the direction of circulation chamber removed, the lateral wall of separating the groove can be right the stopper is spacing.

As another embodiment of this application, set firmly on the valve body with the passageway of placing that the circulation chamber is linked together, place the passageway with the coaxial setting of slide bar just is equipped with the internal thread, internal thread sealing connection has first regulating block, spring unit includes second compression spring, second compression spring's one end is located place in the passageway just the both ends of second compression spring extrude respectively first regulating block with the slide bar.

As another embodiment of this application, the slide bar corresponds elastic diaphragm's one end extends to response intracavity and tip are equipped with the external screw thread, external screw thread threaded connection has the second regulating block, the response intracavity has set firmly to be located elastic diaphragm with limiting plate between the second regulating block, the limiting plate seted up with slide bar clearance fit's second hole that leaks, spring unit includes second compression spring, second compression spring cover is located on the slide bar and its both ends extrude respectively the limiting plate with the second regulating block.

As another embodiment of this application, separate the groove with be equipped with between the elastic diaphragm with valve body fixed connection's extrusion piece, the extrusion piece seted up with first hole that leaks of slide bar clearance fit, spring unit still includes a compression spring. The first compression spring is sleeved on the sliding rod, and two ends of the first compression spring respectively extrude the extrusion block and the elastic diaphragm.

As another embodiment of this application, offer on the valve body and be used for the intercommunication the intercommunicating pore in circulation chamber and response chamber, valve body thread sealing connection has the regulation pole, adjust the pole with the intercommunicating pore coaxial arrangement, the one end of adjusting the pole extends to the valve intracavity and realizes the switching through axial displacement the intercommunicating pore.

As another embodiment of the application, a blowdown valve communicated with the circulation cavity is fixedly arranged on the valve body.

The utility model provides a beneficial effect of governing valve lies in: compared with the prior art, the utility model discloses the governing valve, the both sides of elastic diaphragm bear the water pressure in the response intracavity respectively, the water pressure in the circulation intracavity and the ejection pressure of slide bar to elastic diaphragm, the ejection pressure of slide bar to elastic diaphragm comes from spring assembly's resilience force, when the water pressure in the response intracavity is greater than the water pressure in the circulation intracavity and spring assembly's resilience force sum, elastic diaphragm warp to the direction of circulation chamber, make the slide bar drive the sealing plug to move to the connecting hole direction, realize the flow reduction of connecting hole department, the pressure grow in the circulation intracavity, finally realize pressure balance or flow stability; on the contrary, when the water pressure in the induction cavity is smaller than the sum of the water pressure in the circulation cavity and the resilience force of the spring assembly, the elastic diaphragm deforms towards the direction close to the induction cavity, so that the sliding rod drives the sealing plug to move towards the elastic diaphragm, the flow at the connecting hole is increased, the pressure in the circulation cavity is reduced, and finally, the pressure balance or the flow stability is realized. When the response chamber is used for the middle part of intercommunication supply channel, adjust spring unit's resilience force, make spring unit's resilience force satisfy the operating pressure difference scope of differential pressure valve, when the response chamber is used for the one end that the intercommunication supply channel corresponds inhalant canal, adjust spring unit's resilience force, make spring unit's resilience force satisfy the operating pressure difference scope of flow valve, so this governing valve has solved single governing valve and can not make water supply system possess pressure differential regulatory function and flow control function's problem simultaneously.

In order to achieve the above object, the utility model adopts the following technical scheme: there is provided a differential pressure flow switching system incorporating the regulating valve of any one of the above.

As another embodiment of the present application, the differential pressure flow rate conversion system further includes a first opening and closing valve, a water supply line, and a three-way pipe. The first open-close valve is connected with the water outlet channel. One end of the water supply pipeline is used for communicating the water supply device, and the other end of the water supply pipeline is connected with the water inlet channel by means of a second opening and closing valve. The first branch of the three-way pipe is connected with the middle part of the water supply pipeline, the second branch is connected with the end part of the second opening and closing valve corresponding to the water supply pipeline, the third branch is connected with the induction cavity, and the first branch and the second branch are respectively provided with a third opening and closing valve and a fourth opening and closing valve.

The utility model provides a pressure differential flow conversion system's beneficial effect lies in: compared with the prior art, the utility model discloses pressure differential flow conversion system owing to installed above-mentioned arbitrary governing valve, so solved single governing valve and can not make water supply system possess the problem of pressure differential regulatory function and flow control function simultaneously.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic cross-sectional structural view of a regulating valve provided in embodiment 1 of the present invention;

fig. 2 is a schematic cross-sectional structural view of a regulating valve provided in embodiment 2 of the present invention;

fig. 3 is a schematic structural diagram of a differential pressure flow conversion system according to an embodiment of the present invention.

In the figure: 1. a valve body; 11. a water inlet channel; 12. a water outlet channel; 131. a flow-through chamber; 132. an induction cavity; 14. a communicating hole; 2. an elastic diaphragm; 3. a separation tank; 31. connecting holes; 4. a slide bar; 5. a sealing plug; 61. a first compression spring; 62. a second compression spring; 7. a limiting block; 8. extruding the block; 81. a first water leakage hole; 9. a placement channel; 10. a first regulating block; 110. a second regulating block; 120. a limiting plate; 121. a second water leakage hole; 130. adjusting a rod; 140. a blowdown valve; 150. a first opening/closing valve; 160. a water supply line; 170. a second opening/closing valve; 180. a three-way pipe; 190. a third opening and closing valve; 200. and the fourth opening closing valve.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 3, the regulating valve of the present invention will now be described. The regulating valve comprises a valve body 1, wherein the valve body 1 is provided with a water inlet channel 11, a water outlet channel 12 and a valve cavity, and further comprises an elastic diaphragm 2, a separation groove 3, a sliding rod 4, a sealing plug 5 and a spring assembly. The elastic membrane 2 is fixedly arranged in the valve cavity to divide the valve cavity into an independent circulation cavity 131 and an induction cavity 132, the circulation cavity 131 is communicated with the water inlet channel 11 and the water outlet channel 12, and the induction cavity 132 is used for being communicated with the middle part of the water supply pipeline 160 or communicated with one end of the water supply pipeline 160 corresponding to the water inlet channel 11. The separating groove 3 is arranged in the circulating cavity 131, the opening end of the separating groove 3 faces the water outlet channel 12 and is fixedly connected with the water outlet channel 12 in a sealing way, and the side wall of the separating groove 3 is provided with at least one connecting hole 31 facing the elastic membrane 2. The sliding rod 4 is coaxially arranged with the connecting hole 31, one end of the sliding rod is fixedly connected with the elastic diaphragm 2, and the sliding rod 4 can move towards the sensing cavity 132 or the circulating cavity 131 along with the deformation of the elastic diaphragm 2. The number of the sealing plugs 5 is corresponding to the connecting holes 31 and is fixedly connected with the sliding rod 4, the sealing plugs 5 are arranged in the corresponding connecting holes 31, and the sealing plugs 5 can adjust the flow at the corresponding connecting holes 31 along with the movement of the sliding rod 4. The resilience of the spring assembly is used to push the sliding rod 4 towards the sensing chamber 132, and the resilience of the spring assembly is adjustable within a preset range.

The utility model provides a regulating valve, compared with the prior art, the both sides of elastic diaphragm 2 bear the water pressure in response chamber 132 respectively, the water pressure in circulation chamber 131 and the ejection pressure of slide bar 4 to elastic diaphragm 2, slide bar 4 comes from spring unit's resilience force to elastic diaphragm 2's ejection pressure, when the water pressure in response chamber 132 is greater than the water pressure in circulation chamber 131 and spring unit's resilience force sum, elastic diaphragm 2 warp to the direction of circulation chamber 131, make slide bar 4 drive sealing plug 5 move to connecting hole 31 direction, realize the flow reduction of connecting hole 31 department, the pressure grow in circulation chamber 131, finally realize pressure balance or flow stability; on the contrary, when the water pressure in the sensing cavity 132 is smaller than the sum of the water pressure in the circulation cavity 131 and the resilience force of the spring assembly, the elastic diaphragm 2 deforms in the direction close to the sensing cavity 132, so that the sliding rod 4 drives the sealing plug 5 to move in the direction of the elastic diaphragm 2, the flow at the connecting hole 31 is increased, the pressure in the circulation cavity 131 is reduced, and finally, the pressure balance or the flow stability is realized. When response chamber 132 is used for the middle part of intercommunication water supply line 160, adjust spring assembly's resilience force, make spring assembly's resilience force satisfy the operating pressure differential scope of differential pressure valve, when response chamber 132 is used for the one end that intercommunication water supply line 160 corresponds inlet channel 11, adjust spring assembly's resilience force, make spring assembly's resilience force satisfy the operating pressure differential scope of flow valve, so single governing valve has been solved and single governing valve can not make water supply system possess pressure differential regulatory function and flow control function's problem simultaneously.

As a specific embodiment of the regulating valve provided in the present invention, please refer to fig. 1, the number of the connecting holes 31 is two and respectively disposed on two opposite sidewalls of the separating groove 3, and the two connecting holes 31 are coaxially disposed. This allows for a more rapid adjustment of the flow.

As a specific implementation manner of the regulating valve, please refer to fig. 1, be fixed with on the slide bar 4 along the radial outside convex stopper 7 of connecting hole 31, stopper 7 sets up the recess towards connecting hole 31, and in one of them sealing plug 5 located the recess, when slide bar 4 removed towards the direction of circulation chamber 131, the lateral wall of separating groove 3 can be spacing to stopper 7. The sliding rod 4 is prevented from moving too far due to the instantaneous excessive water pressure in the sensing chamber 132, that is, the sealing plug 5 is prevented from being caught or penetrated into the connecting hole 31.

As a specific implementation manner of the regulating valve, please refer to fig. 1, set firmly the passageway 9 of placing that is linked together with circulation chamber 131 on the valve body 1, place passageway 9 and 4 coaxial settings of slide bar and be equipped with the internal thread, internal thread sealing connection has first regulating block 10, spring unit 6 includes second compression spring 62, and second compression spring 62's one end is located and is placed in the passageway 9 and first regulating block 10 and slide bar 4 are extruded respectively at second compression spring 62's both ends. By rotating the first adjusting block 10, the distance between it and the slide bar 4 can be adjusted, which enables the resilient force of the second compression spring 62, i.e., the resilient force of the spring assembly 6, to be adjusted. In this embodiment, an inner hexagonal groove may be formed on an outer side surface of the first adjusting block 10, so that the first adjusting block 10 may be conveniently rotated.

As a specific implementation manner of the regulating valve, please refer to fig. 2, the one end that the slide bar 4 corresponds the elastic diaphragm 2 extends to the induction cavity 132 and the tip is equipped with the external screw thread, the external screw thread threaded connection has the second regulating block 110, the induction cavity 132 sets firmly the limiting plate 120 that is located between the elastic diaphragm 2 and the second regulating block 110, the limiting plate 120 is seted up with the second hole 121 that leaks of slide bar 4 clearance fit, spring assembly 6 includes second compression spring 62, second compression spring 62 cover is located on the slide bar 4 and its both ends extrude limiting plate 120 and second regulating block 110 respectively. By rotating the second adjusting block 110, the distance between the second adjusting block and the limiting plate 120 can be adjusted, which realizes adjustment of the resilience of the second compression spring 62, that is, adjustment of the resilience of the spring assembly 6.

As a specific implementation manner of the regulating valve, please refer to fig. 1 to fig. 2, in order to realize that the resilience force of the spring assembly is adjustable within the preset range, the extrusion block 8 fixedly connected with the valve body 1 is arranged between the separation groove 3 and the elastic diaphragm 2, the extrusion block 8 is provided with a first water leakage hole 81 in clearance fit with the sliding rod 4, the spring assembly further comprises a first compression spring 61, the sliding rod 4 is sleeved with the first compression spring 61, and the two ends of the first compression spring 61 respectively extrude the extrusion block 8 and the elastic diaphragm 2. The provision of the first compression spring 61 makes the adjustment of the second compression spring 62 more sensitive.

As a specific implementation of the utility model provides a governing valve, please refer to fig. 1, offer the intercommunicating pore 14 that is used for intercommunication circulation chamber 131 and response chamber 132 on the

valve body

1, 1 threaded seal of valve body has the regulation pole 130, adjust pole 130 and the coaxial setting of intercommunicating pore 14, the one end of adjusting pole 130 extends to in the valve chamber and realizes switching intercommunicating pore 14 through axial displacement, the size of opening through intercommunicating pore 14 can adjust the pressure differential between the water pressure in circulation chamber 131 and the water pressure in the response chamber 132. In this embodiment, a dial may be further installed outside the valve body 1 to indicate the size of the opening of the communication hole 14.

As a specific embodiment of the regulating valve provided in the present invention, please refer to fig. 1 to 2, a blowdown valve 140 connected to the circulation chamber 131 is fixedly disposed on the valve body 1, so as to prevent the use of the regulating valve from being affected by excessive impurities in the circulation chamber 131.

Referring to fig. 3, a differential pressure flow conversion system according to the present invention will now be described. The pressure difference flow conversion system is provided with the regulating valve, so that the problem that a single regulating valve cannot enable the water supply system to have the pressure difference regulating function and the flow regulating function at the same time is solved. As a specific embodiment of the regulating valve provided in the present invention, please refer to fig. 3, the differential pressure flow conversion system further includes a first opening/closing valve 150, a water supply pipeline 160 and a three-way pipe 180. The first opening/closing valve 150 is connected to the water outlet passage 12. One end of the water supply line 160 is used to communicate with a water supply device, and the other end is connected to the water inlet passage 11 by means of a second opening and closing valve 170. The first branch of the three-way pipe 180 is connected with the middle part of the water supply pipeline 160, the second branch is connected with the end part of the second opening and closing valve 170 corresponding to the water supply pipeline 160, the third branch is connected with the induction cavity 132, and the first branch and the second branch are respectively provided with a third opening and closing valve 190 and a fourth opening and closing valve 200. When the first open-close valve 150 and the second open-close valve 170 are opened, the present system starts operating. When the pressure difference valve function is needed, the fourth opening and closing valve 200 is closed, the third opening and closing valve 190 is opened, and the resilience force of the spring assembly is adjusted, so that the resilience force of the spring assembly meets the working pressure difference range of the pressure difference valve; when the flow valve function is needed, the third opening and closing valve 190 is closed, the fourth opening and closing valve 200 is opened, and the resilience force of the spring assembly is adjusted, so that the resilience force of the spring assembly meets the working pressure difference range of the flow valve.

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 governing valve, including the valve body, the valve body has inhalant canal, exhalant canal and valve pocket, its characterized in that still includes:

the elastic diaphragm is fixedly arranged in the valve cavity and divides the valve cavity into an independent circulation cavity and an induction cavity, the circulation cavity is communicated with the water inlet channel and the water outlet channel, and the induction cavity is used for communicating the middle part of the water supply pipeline or communicating one end of the water supply pipeline corresponding to the water inlet channel;

the separation groove is arranged in the circulation cavity, the opening end of the separation groove faces the water outlet channel and is fixedly connected with the water outlet channel in a sealing manner, and the side wall of the separation groove is provided with at least one connecting hole facing the elastic membrane;

the sliding rod is coaxially arranged with the connecting hole, one end of the sliding rod is fixedly connected with the elastic diaphragm, and the sliding rod can move towards the induction cavity or the circulation cavity along with the deformation of the elastic diaphragm;

the sealing plugs are arranged in the corresponding connecting holes and can realize the adjustment of the flow at the corresponding connecting holes along with the movement of the sliding rod; and

and the resilience force of the spring assembly is used for pushing the sliding rod towards the direction of the induction cavity, and the resilience force of the spring assembly is adjustable within a preset range.

2. The regulating valve according to claim 1, wherein said connecting holes are two in number and are respectively provided on two opposite side walls of said partition groove, and two of said connecting holes are coaxially provided.

3. The regulating valve of claim 1, wherein the sliding rod is fixed with a stop block protruding outward in the radial direction of the connecting hole, the stop block is provided with a groove facing the connecting hole, one of the sealing plugs is arranged in the groove, and the side wall of the separation groove can limit the stop block when the sliding rod moves towards the direction of the circulation chamber.

4. The regulating valve of claim 2, wherein a placing passage communicated with the circulation chamber is fixedly provided on the valve body, the placing passage is coaxially provided with the sliding rod and is provided with an internal thread, the internal thread is in threaded sealing connection with a first regulating block, and the spring assembly comprises:

and one end of the second compression spring is arranged in the placing channel, and two ends of the second compression spring respectively extrude the first adjusting block and the sliding rod.

5. The regulating valve according to claim 2, wherein one end of the sliding rod corresponding to the elastic diaphragm extends into the sensing cavity, and an external thread is arranged at an end of the sliding rod, the external thread is connected with a second regulating block in a threaded manner, a limiting plate located between the elastic diaphragm and the second regulating block is fixedly arranged in the sensing cavity, the limiting plate is provided with a second water leakage hole in clearance fit with the sliding rod, and the spring assembly comprises:

and the second compression spring is sleeved on the sliding rod, and two ends of the second compression spring respectively extrude the limiting plate and the second adjusting block.

6. The regulating valve according to claim 4 or 5, wherein a pressing block fixedly connected with the valve body is arranged between the separation groove and the elastic membrane, the pressing block is provided with a first water leakage hole in clearance fit with the sliding rod, and the spring assembly further comprises a first compression spring:

the first compression spring is sleeved on the sliding rod, and two ends of the first compression spring respectively extrude the extrusion block and the elastic diaphragm.

7. The regulating valve according to claim 1, wherein the valve body is provided with a communication hole for communicating the circulation chamber with the sensing chamber, the valve body is connected with a regulating rod in a threaded and sealed manner, the regulating rod is coaxially arranged with the communication hole, one end of the regulating rod extends into the valve chamber and realizes opening and closing of the communication hole through axial movement.

8. The regulating valve of claim 1 wherein a waste valve is secured to the valve body and communicates with the flow-through chamber.

9. A differential pressure flow switching system, characterized in that a regulating valve according to any one of claims 1-8 is installed.

10. The differential pressure flow conversion system of claim 9, further comprising:

a first open/close valve connected to the water outlet passage;

one end of the water supply pipeline is used for being communicated with a water supply device, and the other end of the water supply pipeline is connected with the water inlet channel by virtue of a second opening and closing valve;

and the first branch is connected with the middle part of the water supply pipeline, the second branch is connected with the end part of the second opening and closing valve corresponding to the water supply pipeline, the third branch is connected with the induction cavity, and the first branch and the second branch are respectively provided with a third opening and closing valve and a fourth opening and closing valve.