Water inlet pressure reducing valve
By combining the design of the recoil spring and the sliding rod, the problem of inflexible flow regulation in traditional pressure reducing valves is solved, and automatic adjustment of water flow and enhanced adaptability are achieved.
Patent Information
- Application Number
- CN202520732132.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-04-17
AI Technical Summary
Traditional pressure reducing valves cannot automatically adjust according to inlet and outlet water pressure, resulting in inflexible flow regulation.
The design employs a combination of recoil springs and sliding rods to automatically adjust the water flow rate by regulating the pressure difference between the inlet and outlet connectors.
It enables quick adjustment of water flow and better applicability, adapting to flow requirements under different water pressure conditions.
Smart Images
Figure CN223825702U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of control valve technology, and in particular to an inlet pressure reducing valve. Background Technology
[0002] A pressure reducing valve is a device that reduces fluid pressure during pipeline transport. A traditional pressure reducing valve has a passage formed between an orifice and a disc. The orifice is formed in the valve body for fluid passage, and one side of the disc faces the orifice and is located within the valve body. This pressure reducing valve adjusts the orifice opening ratio by controlling the distance between the orifice and the disc, thereby providing pressure reduction and flow rate regulation. However, this type of pressure reducing valve can only limit the pressure difference between a constant inlet and outlet because automatic pressure reducing valves with fixed dimensions have fixed orifice sizes and cannot automatically adjust based on inlet and outlet water pressure. Utility Model Content
[0003] In view of this, in order to solve the above problems, the purpose of this utility model is to provide an inlet pressure reducing valve, which includes:
[0004] Inlet connector, spring seat, buffer sealing gasket, backflush spring, backflush check valve, buffer seat, outlet connector, sliding rod, outlet sealing gasket;
[0005] The water inlet connector has a water inlet pipe, and the spring seat, the buffer sealing gasket, the recoil spring, the recoil check valve and the buffer seat are all installed inside the water inlet pipe;
[0006] One end of the recoil spring is installed on one end of the spring seat, the other end of the recoil spring is engaged with one end of the recoil check valve, the other end of the recoil check valve is engaged with the inside of the buffer seat, one side of the buffer sealing gasket is installed on one end of the buffer seat, and one end of the sliding rod extends into the water outlet connector and is installed on the other end of the buffer seat.
[0007] One end of the water outlet connector is installed inside the water inlet pipe. The water outlet connector has a water outlet pipe inside, and the water inlet pipe is connected to the water outlet pipe. The outer wall of the water outlet connector has several vent holes, and all of the vent holes are connected to the water outlet pipe. The other end of the sliding rod is slidably installed inside the water outlet pipe. The water outlet sealing gasket is installed on the other end of the sliding rod. The diameter of one end of the sliding rod is smaller than the diameter of the other end.
[0008] In the aforementioned inlet pressure reducing valve, the inlet pipe includes a first channel, a second channel, and a third channel connected in sequence. The inner diameter of the first channel is smaller than the inner diameter of the second channel, and the inner diameter of the second channel is smaller than the inner diameter of the third channel. A spring seat is installed in the first channel, a recoil spring and a recoil check valve are installed in the third channel, and a buffer seat is installed in the third channel. The connection between the first channel and the second channel has a stepped surface, and the buffer seat can drive the buffer sealing gasket to move closer to or away from the stepped surface.
[0009] In the aforementioned inlet pressure reducing valve, the outer wall of the spring seat is provided with external threads, the inner wall of the first channel is provided with internal threads, and the spring seat is threadedly connected to the first channel.
[0010] In the aforementioned inlet pressure reducing valve, one end of the buffer seat has a raised ring, and the buffer sealing gasket is sleeved on the raised ring.
[0011] In the aforementioned inlet pressure reducing valve, the outer diameter of the buffer seat gradually decreases from one end to the other, and the other end of the buffer seat has an extension rod, which is installed at one end of the sliding rod.
[0012] In the aforementioned inlet pressure reducing valve, the sliding rod includes a first rod body and a second rod body, the outer diameter of the first rod body is smaller than the outer diameter of the second rod body, one end of the extension rod is installed at one end of the first rod body, the other end of the first rod body is installed at one end of the second rod body, and the second rod body is slidably installed inside the outlet pipe.
[0013] In the aforementioned inlet pressure reducing valve, the first rod body has a front pipe, the second rod body has a rear pipe, the front pipe is connected to the rear pipe, the inner wall of one end of the front pipe is provided with an internal thread, the outer wall of the extension rod is provided with an external thread, and the extension rod is threadedly connected to the front pipe.
[0014] In the aforementioned inlet pressure reducing valve, the outlet pipe includes a fourth channel, a fifth channel, and a sixth channel connected in sequence. The inner diameter of the fourth channel is smaller than the inner diameter of the fifth channel, and the inner diameter of the fifth channel is smaller than the inner diameter of the sixth channel. A plurality of vent holes are connected to the fifth channel, and the second rod is slidably installed in the sixth channel.
[0015] In the aforementioned inlet pressure reducing valve, the number of vent holes is at least two, and the at least two vent holes are arranged sequentially along the circumference of the outlet connector.
[0016] The aforementioned inlet pressure reducing valve further includes: a first sealing ring, a second sealing ring, a third sealing ring, and a fourth sealing ring. The first sealing ring is sleeved on the outer wall of the other end of the backwash check valve, the second sealing ring is sleeved on the outer wall of one end of the outlet connector, the third sealing ring is sleeved on the outer wall of the first rod body, and the fourth sealing ring is sleeved on the outer wall of the second rod body.
[0017] The positive effects of the above technical solution compared with the existing technology are:
[0018] By applying this utility model, an inlet pressure reducing valve is provided. Through the cooperation of a recoil spring and a sliding rod, the pressure difference between the inlet and outlet connectors is automatically adjusted, thereby regulating the water flow rate. This is convenient, quick, and has better applicability. Attached Figure Description
[0019] Figure 1 This is a first schematic diagram of an inlet pressure reducing valve according to the present invention.
[0020] Figure 2 This is a second schematic diagram of an inlet pressure reducing valve according to the present invention.
[0021] Figure 3 This is a first cross-sectional view of an inlet pressure reducing valve according to the present invention.
[0022] Figure 4 This is a second sectional view of an inlet pressure reducing valve according to the present invention.
[0023] 1. Inlet connector; 2. Spring seat; 3. Buffer sealing gasket; 4. Recoil spring; 5. Recoil check valve; 6. Buffer seat; 7. Outlet connector; 8. Sliding rod; 9. Outlet sealing gasket; 10. Inlet pipe; 11. Outlet pipe; 12. Vent hole; 13. First channel; 14. Second channel; 15. Third channel; 16. Raised ring; 17. First rod body; 18. Second rod body; 19. Fourth channel; 20. Fifth channel; 21. Sixth channel; 22. First sealing ring; 23. Second sealing ring; 24. Third sealing ring; 25. Fourth sealing ring. Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.
[0025] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.
[0026] like Figure 1 and Figure 4 As shown, a preferred embodiment of the water inlet pressure reducing valve includes: water inlet connector 1, spring seat 2, buffer sealing gasket 3, backflow spring 4, backflow check valve 5, buffer seat 6, water outlet connector 7, sliding rod 8, and water outlet sealing gasket 9.
[0027] The inlet connector 1 has an inlet pipe 10. The spring seat 2, buffer sealing gasket 3, backflow spring 4, backflow check valve 5, and buffer seat 6 are all installed inside the inlet pipe 10. One end of the backflow spring 4 is installed at one end of the spring seat 2, and the other end of the backflow spring 4 is engaged with one end of the backflow check valve 5. The other end of the backflow check valve 5 is engaged with the inside of the buffer seat 6. One side of the buffer sealing gasket 3 is installed at one end of the buffer seat 6. One end of the sliding rod 8 extends into the outlet connector 7 and is installed at the other end of the buffer seat 6. One end of the outlet connector 7 is installed inside the inlet pipe 10. The outlet connector 7 has an outlet pipe 11. The inlet pipe 10 and the outlet pipe 11 are connected. The outer wall of the outlet connector 7 has several vent holes 12, and all of the vent holes 12 are connected to the outlet pipe 11. The other end of the sliding rod 8 is slidably installed inside the outlet pipe 11. The outlet sealing gasket 9 is installed at the other end of the sliding rod 8. The diameter of one end of the sliding rod 8 is smaller than the diameter of the other end.
[0028] In actual use, when water with a pressure higher than atmospheric pressure flows through the inlet connector 1 and the outlet connector 7, a pressure difference is generated between the two ends of the sliding rod 8 due to the diameter difference between them. That is, the side with higher pressure will push the sliding rod 8 to move towards the side with lower pressure. Specifically, when the water flow rate in the pressure reducing valve is large, the sliding rod 8 will move towards the inlet connector 1, and the gap between the buffer sealing gasket 3 and the stepped surface in the inlet pipe 10 of the inlet connector 1 will decrease, thereby reducing the water flow rate in the pressure reducing valve. When the water flow rate in the pressure reducing valve decreases, the recoil spring 4 drives the buffer seat 6 to move towards the outlet connector 7. At this time, the gap between the buffer sealing gasket 3 and the stepped surface in the inlet pipe 10 of the inlet connector 1 will increase. When the thrust of the recoil spring 4 and the water flow rate reach equilibrium, the gap between the buffer sealing gasket 3 and the stepped surface in the inlet pipe 10 of the inlet connector 1 will no longer change. At this time, the pressure difference between the inlet and outlet water reaches a balanced state.
[0029] Based on the above, this utility model also has the following embodiments:
[0030] Furthermore, an inlet pressure reducing valve is provided, wherein the inlet pipe 10 includes a first channel 13, a second channel 14, and a third channel 15 connected in sequence. The inner diameter of the first channel 13 is smaller than the inner diameter of the second channel 14, and the inner diameter of the second channel 14 is smaller than the inner diameter of the third channel 15. A spring seat 2 is installed in the first channel 13, a backflush spring 4 and a backflush check valve 5 are installed in the third channel 15, and a buffer seat 6 is installed in the third channel 15. The connection between the first channel 13 and the second channel 14 has a stepped surface, and the buffer seat 6 can drive the buffer sealing gasket 3 to move closer to or away from the stepped surface.
[0031] Furthermore, in an inlet pressure reducing valve, the outer wall of the spring seat 2 is provided with external threads, and the inner wall of the first channel 13 is provided with internal threads, with the spring seat 2 and the first channel 13 being threadedly connected. Furthermore, the threaded connection between the spring seat 2 and the first channel 13 facilitates installation and disassembly, and ensures the stability of the spring seat 2.
[0032] Furthermore, in an inlet pressure reducing valve, one end of the buffer seat 6 has a raised ring 16, and a buffer sealing gasket 3 is fitted onto the raised ring 16. Furthermore, the buffer sealing gasket 3 being fitted onto the raised ring 16 ensures the stability of the buffer sealing gasket 3, thereby ensuring the sealing effect, and also facilitates disassembly and replacement.
[0033] Furthermore, in an inlet pressure reducing valve, the outer diameter of the buffer seat 6 gradually decreases from one end to the other, and the other end of the buffer seat 6 has an extension rod, which is installed at one end of the sliding rod 8.
[0034] Furthermore, in an inlet pressure reducing valve, the sliding rod 8 includes a first rod body 17 and a second rod body 18. The outer diameter of the first rod body 17 is smaller than the outer diameter of the second rod body 18. One end of the extension rod is installed at one end of the first rod body 17, and the other end of the first rod body 17 is installed at one end of the second rod body 18. The second rod body 18 is slidably installed inside the outlet pipe 11.
[0035] Furthermore, in an inlet pressure reducing valve, a first rod body 17 has a front pipe and a second rod body 18 has a rear pipe, the front pipe and the rear pipe are connected, an internal thread is provided on the inner wall of one end of the front pipe, an external thread is provided on the outer wall of the extension rod, and the extension rod is threadedly connected to the front pipe.
[0036] Furthermore, an inlet pressure reducing valve is provided, wherein the outlet pipe 11 includes a fourth channel 19, a fifth channel 20 and a sixth channel 21 connected in sequence, the inner diameter of the fourth channel 19 is smaller than the inner diameter of the fifth channel 20, the inner diameter of the fifth channel 20 is smaller than the inner diameter of the sixth channel 21, a plurality of vent holes 12 are connected to the fifth channel 20, and the second rod 18 is slidably installed in the sixth channel 21.
[0037] Furthermore, in an inlet pressure reducing valve, the number of vent holes 12 is at least two, and the at least two vent holes 12 are arranged sequentially along the circumference of the outlet connector 7. Specifically, the number of vent holes 12 is two or more.
[0038] Furthermore, an inlet pressure reducing valve further includes: a first sealing ring 22, a second sealing ring 23, a third sealing ring 24, and a fourth sealing ring 25. The first sealing ring 22 is sleeved on the outer wall of the other end of the backwash check valve 5, the second sealing ring 23 is sleeved on the outer wall of one end of the outlet connector 7, the third sealing ring 24 is sleeved on the outer wall of the first rod body 17, and the fourth sealing ring 25 is sleeved on the outer wall of the second rod body 18. Furthermore, the arrangement of the first sealing ring 22, the second sealing ring 23, the third sealing ring 24, and the fourth sealing ring 25 ensures the overall sealing performance of the pressure reducing valve and facilitates disassembly and assembly. Furthermore, the installation of the first sealing ring 22, the second sealing ring 23, the third sealing ring 24, and the fourth sealing ring 25 is a conventional technical means in the art. For example, grooves are provided at the installation positions of the first sealing ring 22, the second sealing ring 23, the third sealing ring 24, and the fourth sealing ring 25 to avoid shaking, thereby ensuring the stability of the first sealing ring 22, the second sealing ring 23, the third sealing ring 24, and the fourth sealing ring 25.
[0039] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A water inlet pressure reducing valve, characterized in that, include: Inlet connector, spring seat, buffer sealing gasket, backflush spring, backflush check valve, buffer seat, outlet connector, sliding rod, outlet sealing gasket; The water inlet connector has a water inlet pipe, and the spring seat, the buffer sealing gasket, the recoil spring, the recoil check valve and the buffer seat are all installed inside the water inlet pipe; One end of the recoil spring is installed on one end of the spring seat, the other end of the recoil spring is engaged with one end of the recoil check valve, the other end of the recoil check valve is engaged with the inside of the buffer seat, one side of the buffer sealing gasket is installed on one end of the buffer seat, and one end of the sliding rod extends into the water outlet connector and is installed on the other end of the buffer seat. One end of the water outlet connector is installed inside the water inlet pipe. The water outlet connector has a water outlet pipe inside, and the water inlet pipe is connected to the water outlet pipe. The outer wall of the water outlet connector has several vent holes, and all of the vent holes are connected to the water outlet pipe. The other end of the sliding rod is slidably installed inside the water outlet pipe. The water outlet sealing gasket is installed on the other end of the sliding rod. The diameter of one end of the sliding rod is smaller than the diameter of the other end.
2. The inlet pressure reducing valve according to claim 1, characterized in that, The water inlet pipe includes a first channel, a second channel, and a third channel connected in sequence. The inner diameter of the first channel is smaller than the inner diameter of the second channel, and the inner diameter of the second channel is smaller than the inner diameter of the third channel. The spring seat is installed in the first channel, the recoil spring and the recoil check valve are installed in the third channel, and the buffer seat is installed in the third channel. The connection between the first channel and the second channel has a stepped surface, and the buffer seat can drive the buffer sealing gasket to move closer to or away from the stepped surface.
3. The inlet pressure reducing valve according to claim 2, characterized in that, The outer wall of the spring seat has an external thread, and the inner wall of the first channel has an internal thread. The spring seat is threadedly connected to the first channel.
4. The inlet pressure reducing valve according to claim 1, characterized in that, One end of the buffer seat has a raised ring, and the buffer sealing gasket is sleeved on the raised ring.
5. The inlet pressure reducing valve according to claim 1, characterized in that, The outer diameter of the buffer seat gradually decreases from one end to the other, and the other end of the buffer seat has an extension rod, which is installed at one end of the sliding rod.
6. The inlet pressure reducing valve according to claim 5, characterized in that, The sliding rod includes a first rod body and a second rod body. The outer diameter of the first rod body is smaller than the outer diameter of the second rod body. One end of the extension rod is installed at one end of the first rod body, and the other end of the first rod body is installed at one end of the second rod body. The second rod body is slidably installed inside the water outlet pipe.
7. The inlet pressure reducing valve according to claim 6, characterized in that, The first rod body has a front pipe, and the second rod body has a rear pipe. The front pipe is connected to the rear pipe. The inner wall of one end of the front pipe is provided with an internal thread, and the outer wall of the extension rod is provided with an external thread. The extension rod is threadedly connected to the front pipe.
8. The inlet pressure reducing valve according to claim 6, characterized in that, The water outlet pipe includes a fourth channel, a fifth channel, and a sixth channel connected in sequence. The inner diameter of the fourth channel is smaller than that of the fifth channel, and the inner diameter of the fifth channel is smaller than that of the sixth channel. A plurality of the vent holes are connected to the fifth channel, and the second rod is slidably installed in the sixth channel.
9. The inlet pressure reducing valve according to claim 1, characterized in that, The number of vent holes is at least two, and at least two vent holes are arranged sequentially along the circumference of the water outlet connector.
10. A water inlet pressure reducing valve according to claim 6, characterized in that, Also includes: The system comprises a first sealing ring, a second sealing ring, a third sealing ring, and a fourth sealing ring. The first sealing ring is fitted onto the outer wall of the other end of the backwash check valve, the second sealing ring is fitted onto the outer wall of one end of the water outlet connector, the third sealing ring is fitted onto the outer wall of the first rod body, and the fourth sealing ring is fitted onto the outer wall of the second rod body.