Buffer type pressure reducing and stabilizing valve

Abstract

The utility model provides a buffer type pressure reducing and stabilizing valve, which relates to the technical field of pipeline valve parts, and comprises a valve body, a water inlet pipe and a water outlet pipe which are coaxially arranged are arranged on the valve body, and a valve device is integrated on the water inlet pipe to control opening and closing; the pressure adjusting mechanism comprises a membrane rod, a sealing pressing piece and a spring, the top end of the elastic non-permeable membrane is connected with the spring, and the bottom end is fixedly connected with the sealing pressing piece through the membrane rod; a plurality of pins are distributed in the circumferential direction of the sealing pressing piece, and a hydrophobic gap is formed between every two adjacent pins; the pin is movably inserted into the annular guide seat at the joint of the first chamber and the second chamber, and the insertion depth H1 of the pin and the compression deformation quantity H2 of the spring meet the condition that H1 is greater than H2; when the water pressure of the second chamber is higher than that of the third chamber, the water pressure drives the elastic non-permeable membrane to move upwards to compress the spring, and pressure buffering is achieved. The utility model has the beneficial effects that the sealing pressing piece can be ensured to keep a stable track in the vertical direction, the risk of radial deviation is eliminated, and the contact precision of the sealing pressing piece and the operation reliability of equipment are effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of pipeline valve components, and in particular to a buffer-type pressure reducing and stabilizing valve. Background Technology

[0002] A buffer-type pressure-reducing and stabilizing valve is a precision device that dynamically regulates fluid pressure to ensure the safe operation of a pipeline system. Its core function is to reduce upstream pressure and maintain a dynamic balance of downstream pressure, thereby ensuring the safe and efficient operation of the pipeline system. Its principle involves controlling the opening degree of the valve body's opening and closing elements to regulate the flow rate of the medium, reducing its pressure. Simultaneously, it uses the downstream pressure to adjust the opening degree of the opening and closing elements, keeping the downstream pressure within a certain range. Even with constantly changing inlet pressure, it maintains the outlet pressure within a set range, protecting the overall pipeline's water pressure stability. However, currently, buffer-type pressure-reducing and stabilizing valves experience sealing element misalignment during long-term operation, affecting sealing performance and leading to poor stability. Therefore, improvements to the existing design are urgently needed. Utility Model Content

[0003] This invention overcomes the shortcomings of the prior art by providing a buffer-type pressure reducing and stabilizing valve, which helps to improve the stability and reliability of operation.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] A buffer-type pressure reducing and stabilizing valve includes a valve body, which has a coaxially arranged inlet pipe and outlet pipe, and a valve device is integrated on the inlet pipe to control the opening and closing.

[0006] The valve body contains a first chamber, a second chamber, and a third chamber formed by a removable top cover. The first chamber is connected to the inlet pipe, the second chamber is connected to the outlet pipe, and the third chamber is separated from the second chamber by an elastic non-permeable membrane.

[0007] The flow guiding assembly includes a first conduit connecting the inlet pipe and the third chamber, and a second conduit connecting the third chamber and the outlet pipe. The second conduit is equipped with a pressure reducing valve.

[0008] The pressure regulating mechanism includes a membrane rod, a sealing pressure element, and a spring. The top of the elastic non-permeable membrane is connected to the spring, and the bottom is fixed to the sealing pressure element through the membrane rod. The sealing pressure element has several pins distributed circumferentially, and a hydrophobic gap is formed between adjacent pins. The pins are movably inserted into the annular guide seat at the junction of the first chamber and the second chamber, and the insertion depth H1 of the pins and the compression deformation H2 of the spring satisfy H1 > H2. When the water pressure in the second chamber is higher than that in the third chamber, the water pressure drives the elastic non-permeable membrane to move upward and compress the spring, thereby achieving pressure buffering.

[0009] Furthermore, the elastic non-permeable membrane and the membrane rod are rigidly connected by through bolts; the inner wall of the upper cover is provided with a downwardly extending annular boss, the upper end of the spring is nested on the annular boss, and the lower end is sleeved on the bolt.

[0010] Furthermore, the second chamber is provided with an upward-opening cylindrical filter, the open end of which is fixed on an annular guide seat; the axis of the cylindrical filter is lower than the common axis of the inlet pipe and the outlet pipe, and there is a surrounding blocking position between it and the outlet pipe to block impurities.

[0011] Furthermore, a detachable lower end cover is provided below the cylindrical filter, with a distance of 5-10 mm between the lower end cover and the bottom of the cylindrical filter, forming an impurity settling chamber.

[0012] Furthermore, the valve device includes a valve stem driven by an actuator, a rubber sleeve inside the water inlet pipe, and the end of the valve stem connected to a butterfly valve plate inside the rubber sleeve. The diameter of the butterfly valve plate matches the diameter of the rubber sleeve to achieve a fully closed state with zero leakage.

[0013] Furthermore, a needle valve is connected in series on the first conduit, and a first ball valve is provided in its bypass, which is connected to the inlet pressure gauge; a second ball valve is provided on the second conduit, and the outlet pipe is connected to the outlet pressure gauge.

[0014] Furthermore, sealing rings are provided on both the upper and lower sides of the diaphragm.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The sealing pressure component of this utility model adopts an axial guide structure design. Its lower pins are precisely matched with the annular guide seat through a dynamic insertion method. By pre-setting the relationship between the pin insertion depth and the spring compression, under water pressure fluctuation conditions, the geometric constraint of the pin stroke by the annular guide seat and the elastic compensation of the spring system ensure that the sealing pressure component maintains a stable trajectory in the vertical direction, eliminates the risk of radial offset, and effectively improves the contact accuracy of the sealing pressure component and the reliability of equipment operation. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and, together with the embodiments of the present invention, are used to explain the present invention. They do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a perspective view of the buffer-type pressure reducing and stabilizing valve described in this utility model;

[0019] Figure 2 This is a cross-sectional view of the buffer-type pressure reducing and stabilizing valve described in this utility model;

[0020] Figure 3This is an exploded view of the buffer-type pressure reducing and stabilizing valve described in this utility model;

[0021] Figure 4 This is a cross-sectional view of the valve body described in this utility model.

[0022] In the picture:

[0023] 1. Valve body; 101. First chamber; 102. Second chamber; 103. Third chamber; 104. Enclosure stop; 2. Inlet pipe; 201. Rubber sleeve; 3. Outlet pipe; 4. Valve device; 401. Actuator; 402. Valve stem; 403. Butterfly valve plate; 5. Top cover; 501. Annular boss; 6. Elastic non-permeable diaphragm; 7. First guide tube; 8. Second guide tube; 9. Pressure reducing valve; 10. Diaphragm rod; 11. Sealing pressure element; 12. Spring; 13. Pin; 14. Annular guide seat; 15. Bolt; 16. Cylindrical filter; 17. Lower end cover; 18. Needle valve; 19. First ball valve; 20. Inlet pressure gauge; 21. Second ball valve; 22. Outlet pressure gauge; 23. Sealing ring. Detailed Implementation

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0025] like Figures 1 to 4 As shown, this utility model claims protection for a buffer-type pressure reducing and stabilizing valve, including a valve body 1, which has a coaxially arranged inlet pipe 2 and outlet pipe 3. A valve device 4 is integrated on the inlet pipe 2 to control the opening and closing. The valve device 4 is used to control the overall water opening and closing and the flow rate. The valve device 4 includes a valve stem 402 driven by an actuator 401. The actuator 401 can be a motor or a worm gear component with a motor. A rubber sleeve 201 is provided inside the inlet pipe 2. The rubber sleeve 201 is sealed to the inner wall of the inlet pipe 2. The end of the valve stem 402 is connected to a butterfly valve plate 403 inside the rubber sleeve 201. The diameter of the butterfly valve plate 403 matches the diameter of the rubber sleeve 201 to achieve a fully closed state with zero leakage. That is, the actuator 401 controls the rotation of the valve stem 402 and the butterfly valve plate 403, thereby controlling the water flow rate or opening and closing in the rubber sleeve 201. The outer surface or outer edge of the butterfly valve plate 403 is also covered with rubber material, which helps to seal with the rubber sleeve 201 and improves the sealing performance.

[0026] The valve body 1 internally includes a first chamber 101, a second chamber 102, and a third chamber 103 formed by a removable top cover 5. The first chamber 101 is connected to the inlet pipe 2, the second chamber 102 is connected to the outlet pipe 3, and the third chamber 103 is separated from the second chamber 102 by an elastic non-permeable membrane 6. It also includes a flow guiding assembly and a pressure regulating mechanism. The flow guiding assembly includes a first conduit 7 connecting the inlet pipe 2 and the third chamber 103, and a second conduit 8 connecting the third chamber 103 and the outlet pipe 3. A pressure reducing valve 9 is provided on the second conduit 8.

[0027] The pressure regulating mechanism includes a membrane rod 10, a sealing pressure member 11, and a spring 12. The top end of the elastic non-permeable membrane 6 is connected to the spring 12, and the bottom end is fixed to the sealing pressure member through the membrane rod. The sealing pressure member has several pins 13 distributed circumferentially, and a hydrophobic gap is formed between adjacent pins 13. The pins 13 are movably inserted into the annular guide seat 14 at the junction of the first chamber 101 and the second chamber 102, and the insertion depth H1 of the pins 13 and the compression deformation H2 of the spring 12 satisfy H1 > H2. When the water pressure in the second chamber 102 is higher than that in the third chamber 103, the water pressure drives the elastic non-permeable membrane 6 to move upward and compress the spring 12, thereby achieving pressure buffering.

[0028] The elastic non-permeable membrane 6 is rigidly connected to the membrane rod by a through bolt 15; the inner wall of the upper cover 5 is provided with a downwardly extending annular boss 501, the upper end of the spring 12 is nested on the annular boss 501, and the lower end is sleeved on the bolt 15.

[0029] The second chamber 102 is provided with an upward-opening cylindrical filter 16, the open end of which is fixed on the annular guide seat 14; the axis of the cylindrical filter 16 is lower than the common axis of the inlet pipe 2 and the outlet pipe 3, and there is a surrounding blocking position 104 between it and the outlet pipe 3 to block impurities.

[0030] A removable lower end cover 17 is provided below the cylindrical filter 16. The distance between the lower end cover 17 and the bottom of the cylindrical filter 16 is 5-10mm, forming an impurity settling chamber.

[0031] A needle valve 18 is connected in series on the first conduit 7, and a first ball valve 19 is provided in its bypass. The first ball valve 19 is connected to the inlet pressure gauge 20. A second ball valve 21 is provided on the second conduit 8, and the outlet pipe 3 is connected to the outlet pressure gauge 22.

[0032] Sealing rings 23 are provided on both the upper and lower sides of the diaphragm.

[0033] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A surge pressure reducing and stabilizing valve characterized by, It includes a valve body (1), which is provided with an inlet pipe (2) and an outlet pipe (3) arranged coaxially. A valve device (4) is integrated on the inlet pipe (2) to control the opening and closing. The valve body (1) contains a first chamber (101), a second chamber (102), and a third chamber (103) formed by a removable top cover (5). The first chamber (101) is connected to the inlet pipe (2), the second chamber (102) is connected to the outlet pipe (3), and the third chamber (103) is separated from the second chamber (102) by an elastic non-permeable membrane (6). The flow guiding assembly includes a first conduit (7) connecting the inlet pipe (2) and the third chamber (103), and a second conduit (8) connecting the third chamber (103) and the outlet pipe (3). The second conduit (8) is equipped with a pressure reducing valve (9). The pressure regulating mechanism includes a membrane rod (10), a sealing pressure member (11), and a spring (12). The top end of the elastic non-permeable membrane (6) is connected to the spring (12), and the bottom end is fixed to the sealing pressure member (11) through the membrane rod (10). The sealing pressure member (11) has several pins (13) distributed circumferentially, and a hydrophobic gap is formed between adjacent pins (13). The pins (13) are movably inserted into the annular guide seat (14) at the junction of the first chamber (101) and the second chamber (102), and the insertion depth H1 of the pins (13) and the compression deformation H2 of the spring (12) satisfy H1>H2. When the water pressure in the second chamber (102) is higher than that in the third chamber (103), the water pressure drives the elastic non-permeable membrane (6) to move upward and compress the spring (12) to achieve pressure buffering.

2. The surge pressure reducing stabilizing valve according to claim 1, wherein The elastic non-permeable membrane (6) and the membrane rod (10) are rigidly connected by a through bolt (15); the inner wall of the upper cover (5) is provided with a downwardly extending annular boss (501), the upper end of the spring (12) is nested on the annular boss (501), and the lower end is sleeved on the bolt (15).

3. The surge pressure reducing stabilizing valve according to claim 2, wherein The second chamber (102) is provided with an upward-opening cylindrical filter (16), the opening end of which is fixed on an annular guide seat (14); the axis of the cylindrical filter (16) is lower than the common axis of the inlet pipe (2) and the outlet pipe (3), and there is a surrounding blocking position (104) between it and the outlet pipe (3) to block impurities.

4. The surge pressure reducing stabilizing valve according to claim 3, wherein The cylindrical filter (16) is equipped with a detachable lower end cover (17) below it. The distance between the lower end cover (17) and the bottom of the cylindrical filter (16) is 5-10 mm, forming an impurity settling chamber.

5. The surge pressure reducing stabilizing valve according to claim 1, wherein The valve device (4) includes a valve stem (402) driven by an actuator (401), a rubber sleeve (201) is provided inside the water inlet pipe (2), and the end of the valve stem (402) is connected to a butterfly valve plate (403) inside the rubber sleeve (201). The diameter of the butterfly valve plate (403) matches the diameter of the rubber sleeve (201) to achieve zero leakage in a fully closed state.

6. The surge pressure reducing stabilizing valve according to claim 1, wherein A needle valve (18) is connected in series on the first conduit (7), and a first ball valve (19) is provided in its bypass. The first ball valve (19) is connected to the inlet pressure gauge (20). A second ball valve (21) is provided on the second conduit (8), and the outlet pipe (3) is connected to the outlet pressure gauge (22).

7. The surge pressure reducing stabilizing valve according to claim 1, wherein The membrane is provided with a sealing ring (23) on both upper and lower sides.

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