Valve core holder of pressure reducing valve and pressure reducing valve
Patent Information
- Application Number
- CN202522367981.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-07
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-07
AI Technical Summary
但是，由于导压孔21′的下端口开设于阀芯架2′的底面，导压孔21′直接受到出水孔20′处水流的冲击，使得阀后压力受到水流冲击后产生波动，并最终导致阀芯3′抖动（轴向）并形成噪音
[0021]本实用新型提供一种减压阀的阀芯架及减压阀，通过在分隔环朝向阀后压力区的一侧设置挡环，并且挡环环绕过水孔设置，使得过水孔处的冲击水流对阀后压力的波动减小，从而减少阀芯的抖动，确保了减压阀阀后压力的稳定，降低噪音。
Smart Images
Figure CN224836489U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pressure reducing valve technology, and in particular to a pressure reducing valve core holder and a pressure reducing valve. Background Technology
[0002] like Figure 1 As shown, the operation of the piston-type pressure reducing valve is controlled by the downstream pressure. The upstream and downstream pressures are divided by the dashed line A; the pressure at the inlet is the upstream pressure, and the pressure at the outlet is the downstream pressure. When the downstream pressure increases, the valve opening decreases; when the downstream pressure decreases, the valve opening increases to meet the control requirements.
[0003] Existing pressure reducing valves typically include a valve body 1', a valve core holder 2' fixed within the valve body 1', and a valve core 3' disposed within the valve core holder 2' and movable vertically relative to the valve core holder 2' to change the medium passage and medium flow rate. The bottom of the valve core holder 2' has a water passage hole 20' and a pressure guiding hole 21' for cooperating with the valve core 3' to form the downstream pressure. The valve core 3', from top to bottom, includes a main body 31', a connecting section 32', and a valve disc 33'. The connecting section 32' has the water passage hole 20' passing through it. A water passage area is formed between the valve disc 33' and the water passage hole 20' for fluid to pass through, and the water flow diffuses outwards after passing through the water passage area. However, because the lower end of the pressure guiding hole 21' is located on the bottom surface of the valve core holder 2', the pressure guiding hole 21' is directly impacted by the water flow at the water outlet hole 20'. This causes fluctuations in the downstream pressure due to the water flow impact, ultimately leading to valve core 3' vibration (axial) and noise.
[0004] Therefore, there is an urgent need to provide a valve core holder and a pressure reducing valve to solve the above problems. Utility Model Content
[0005] The purpose of this utility model is to provide a valve core holder and a pressure reducing valve, which can reduce the fluctuation of the downstream pressure caused by the impact water flow at the water passage, thereby reducing the vibration of the valve core, ensuring the stability of the downstream pressure of the pressure reducing valve, and reducing noise.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] A valve core holder for a pressure reducing valve is installed inside the valve cavity of the pressure reducing valve. The valve core holder includes a partition ring for dividing the valve cavity into a pre-valve pressure zone on one side and a post-valve pressure zone on the other side. The inner edge of the partition ring forms a water passage hole. A retaining ring protrudes from the side of the partition ring facing the post-valve pressure zone and surrounds the water passage hole.
[0008] As an optional solution, the valve core frame is further provided with a pressure guiding hole, one end of which extends into the pressure zone after the valve and forms a first pressure guiding port; along the axial direction of the valve core frame and toward the pressure zone after the valve, the axial height of the free end of the retaining ring is greater than the axial height of the first pressure guiding port.
[0009] As an optional solution, the valve core frame also includes a pressure guiding sleeve and at least two pressure guiding rods spaced apart from each other. The pressure guiding sleeve is located in the pressure zone before the valve, and the two ends of the pressure guiding rods are respectively fixed to the pressure guiding sleeve and the partition ring. The gap between two adjacent pressure guiding rods forms a water flow channel.
[0010] As an optional solution, the pressure guiding sleeve includes a large inner hole section and a small inner hole section, with a step formed between the large inner hole section and the small inner hole section, and the pressure guiding hole simultaneously passes through the small inner hole section, the pressure guiding rod, and the separator ring.
[0011] As an optional solution, the pressure guiding sleeve, the pressure guiding rod, the partition ring, and the retaining ring are integrally formed.
[0012] A pressure reducing valve includes a valve body, a valve core, and a valve core holder for the aforementioned pressure reducing valve. The valve core holder is disposed within the valve body, and the valve core is axially movable within the valve core holder.
[0013] As an alternative, a first sealing groove is provided on the outer side wall of the separator ring, and a first sealing ring is placed in the first sealing groove, with the outer ring of the first sealing ring abutting against the inner wall of the valve body.
[0014] As an optional solution, the valve core frame also includes a pressure guiding sleeve and at least two pressure guiding rods spaced apart from each other. The two ends of the pressure guiding rods are respectively fixed to the pressure guiding sleeve and the partition ring, and the gap between two adjacent pressure guiding rods forms a water flow channel.
[0015] The valve core includes a pressure guiding part, a sealing part, and a connecting part. The two ends of the connecting part are respectively fixed to the pressure guiding part and the sealing part. The pressure guiding part is installed inside the pressure guiding sleeve. The connecting part passes through the partition ring. The sealing part is located in the pressure zone after the valve and is arranged opposite to the water passage hole.
[0016] As an optional solution, the pressure guiding sleeve includes a large inner hole section and a small inner hole section, with a step formed between the large inner hole section and the small inner hole section, and the pressure guiding hole simultaneously passes through the small inner hole section, the pressure guiding rod, and the separator ring;
[0017] The pressure guiding part includes a small-diameter pressure guiding plate and a large-diameter pressure guiding plate that are fixed to each other. The small-diameter pressure guiding plate is sealed and installed in the small inner hole section. The pressure before the valve can be applied to the small-diameter pressure guiding plate through the water flow channel. The large-diameter pressure guiding plate is sealed and installed in the large inner hole section. The pressure after the valve can be applied to the large-diameter pressure guiding plate through the pressure guiding hole.
[0018] As an optional solution, a second sealing groove is provided on the outer side wall of the large-diameter pressure guide plate, and a second sealing ring is placed in the second sealing groove, with the outer ring of the second sealing ring abutting against the inner wall of the large inner hole section.
[0019] A third sealing groove is provided on the outer wall of the small-diameter pressure guide plate. A third sealing ring is placed in the third sealing groove, and the outer ring of the third sealing ring abuts against the wall of the small inner hole section.
[0020] The beneficial effects of this utility model are:
[0021] This utility model provides a valve core frame and a pressure reducing valve. By setting a retaining ring on the side of the separator ring facing the pressure zone after the valve, and the retaining ring surrounding the water passage hole, the impact water flow at the water passage hole reduces the fluctuation of the pressure after the valve, thereby reducing the vibration of the valve core, ensuring the stability of the pressure after the pressure reducing valve, and reducing noise. Attached Figure Description
[0022] Figure 1 This is a cross-sectional view of a pressure reducing valve provided by existing technology;
[0023] Figure 2 This is a cross-sectional view of the pressure reducing valve provided in this embodiment of the utility model;
[0024] Figure 3 This is a schematic diagram of the valve core frame provided in an embodiment of the present utility model;
[0025] Figure 4 This is a cross-sectional view of the valve core frame provided in an embodiment of this utility model;
[0026] Figure 5 This is a cross-sectional view of the valve core provided in an embodiment of this utility model.
[0027] In the picture:
[0028] 1′, Valve body; 2′, Valve core frame; 20′, Water passage hole; 21′, Pressure guide hole; 3′, Valve core; 31′, Main body; 32′, Connecting section; 33′, Valve disc;
[0029] 10. Valve core frame; 11. Separator ring; 111. Water passage hole; 112. First sealing ring; 12. Retaining ring; 13. Pressure guide rod; 14. Pressure guide sleeve; 141. Large inner hole section; 142. Small inner hole section; 143. Step; 144. Protruding ring; 15. Pressure guide hole; 151. First pressure guide port; 152. Second pressure guide port; 16. Water flow channel;
[0030] 20. Valve body; 201. Pressure zone before valve; 202. Pressure zone after valve; 21. Inlet channel; 22. Outlet channel;
[0031] 30. Valve core; 31. Pressure guiding part; 311. Large diameter pressure guiding plate; 312. Small diameter pressure guiding plate; 32. Connecting part; 33. Sealing part; 34. Second sealing ring; 35. Third sealing ring;
[0032] 40. Valve cover; 50. Spring; 60. Pressure adjusting nut. Detailed Implementation
[0033] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0035] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0036] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0037] like Figure 2 As shown, this embodiment provides a pressure reducing valve, including a valve body 20, a valve core 30, a valve core holder 10, a valve cover 40, a spring 50, and a pressure adjusting nut 60. The valve body 20 has an inlet channel 21 and an outlet channel 22 at its left and right ends, respectively. The valve cover 40 is threaded to the upper end of the valve body 20. The valve cover 40 and the valve body 20 cooperate to form a valve cavity, which connects the inlet channel 21 and the outlet channel 22. The valve core holder 10, the valve core 30, and the spring 50 are all located within the valve cavity. The valve core 30 is axially movable within the valve core holder 10. The valve core holder 10 can be adjusted as follows: Figure 1 The tilt setting shown can also be as follows: Figure 2 The valve is vertically positioned as shown. The pressure adjusting nut 60 is threaded into the top of the valve cover 40. One end of the spring 50 rests against the pressure adjusting nut 60, and the other end rests against the valve core 30. By turning the pressure adjusting nut 60, the height of the spring 50 can be changed, thereby adjusting the downstream pressure of the valve.
[0038] like Figure 3 and Figure 4 As shown, the valve core frame 10 includes, from top to bottom, a pressure guiding sleeve 14, four spaced-apart pressure guiding rods 13, and a partition ring 11. The two ends of each pressure guiding rod 13 are fixed to the pressure guiding sleeve 14 and the partition ring 11, respectively. The gap between two adjacent pressure guiding rods 13 forms a water flow channel 16. The partition ring 11 divides the valve cavity into a pre-valve pressure zone 201 on one side and a post-valve pressure zone 202 on the other side (e.g., ...). Figure 2 As shown), the pressure guide sleeve 14 is located in the pressure zone 201 before the valve. The inner edge of the separator ring 11 forms a water passage hole 111, which is connected to the water flow channel 16. In actual use, the upstream medium flows in through the inlet channel 21, then enters the water passage hole 111 through the water flow channel 16 around the valve core frame 10, flows out from the baffle ring 12 and diffuses to the surroundings, and finally flows downstream through the outlet channel 22.
[0039] Optionally, such as Figure 3 and Figure 4 As shown, the pressure guide sleeve 14 includes a large inner hole section 141 and a small inner hole section 142. A step 143 is formed between the large inner hole section 141 and the small inner hole section 142. The outer wall of the large inner hole section 141 is provided with a protruding ring 144. When the valve cover 40 is fixed to the valve body 20, the protruding ring 144 can be pressed tightly so that the valve core frame 10 is fixed in the valve cavity.
[0040] A retaining ring 12 protrudes from the side of the separator ring 11 facing the downstream pressure zone 202, and the retaining ring 12 surrounds the water passage hole 111. The water passage hole 111 serves as the boundary (approximately...). Figure 2As shown by the dashed line A in the diagram, the valve cavity is divided into a pre-valve pressure zone 201 and a post-valve pressure zone 202 by a partition ring 11. The pre-valve pressure zone 201 is close to the inlet channel 21, and the post-valve pressure zone 202 is close to the outlet channel 22. By setting a retaining ring 12 on the side of the partition ring 11 facing the post-valve pressure zone 202, and by setting the retaining ring 12 around the water passage 111, the fluctuation of the impact water flow at the water passage 111 on the post-valve pressure is reduced, thereby reducing the vibration of the valve core 30, ensuring the stability of the post-valve pressure of the pressure reducing valve, and reducing noise.
[0041] like Figure 3 and Figure 4 As shown, the valve core frame 10 is also provided with a pressure guiding hole 15, which simultaneously passes through the small inner hole section 142, the pressure guiding rod 13, and the partition ring 11. One end of the pressure guiding hole 15 extends into the downstream pressure zone 202 of the valve and forms a first pressure guiding port 151. The other end of the pressure guiding hole 15 extends to the step 143, and a second pressure guiding port 152 of the pressure guiding hole 15 is formed on the step 143. The second pressure guiding port 152 communicates with the large inner hole section 141. Along the axial direction of the valve core frame 10 and towards the downstream pressure zone 202, the axial height of the free end of the retaining ring 12 is greater than the axial height of the first pressure guiding port 151. Since the first pressure guiding port 151 of the pressure guiding hole 15 and the free end of the retaining ring 12 form a height difference in the axial direction of the valve core frame 10, the direct impact of the water flow at the water passage 111 on the pressure guiding hole 15 can be reduced, which further reduces the fluctuation of the pressure after the valve caused by the impact water flow at the water passage 111, and the vibration of the valve core 30 is sharply reduced, thereby further reducing the noise.
[0042] Optionally, a first sealing groove is provided on the outer side wall of the separator ring 11, and a first sealing ring 112 is placed in the first sealing groove. The outer ring of the first sealing ring 112 abuts against the inner wall of the valve body 20, thereby ensuring the sealed installation between the valve core frame 10 and the valve body 20.
[0043] Optionally, the valve core frame 10 is usually made of plastic, that is, the pressure guide sleeve 14, pressure guide rod 13, partition ring 11 and retaining ring 12 are integrally formed, which not only facilitates processing, but also ensures that the valve core frame 10 has sufficient reliability and can withstand large water pressure.
[0044] Furthermore, such as Figure 5 As shown, the valve core 30 includes a pressure guiding part 31, a sealing part 33, and a connecting part 32. The two ends of the connecting part 32 are fixed to the pressure guiding part 31 and the sealing part 33, respectively. The pressure guiding part 31 is installed in the pressure guiding sleeve 14. The connecting part 32 passes through the water passage hole 111 of the partition ring 11, so that the pressure guiding part 31 and the sealing part 33 of the valve core 30 are located on both sides of the water passage hole 111, and the sealing part 33 is located in the pressure zone 202 after the valve and is arranged opposite to the water passage hole 111.
[0045] Optionally, the pressure guiding part 31 includes a small-diameter pressure guiding plate 312 and a large-diameter pressure guiding plate 311 fixed to each other. The small-diameter pressure guiding plate 312 is sealed and installed in the small inner hole section 142, and the pressure before the valve can be applied to the small-diameter pressure guiding plate 312 through the water flow channel 16. The large-diameter pressure guiding plate 311 is sealed and installed in the large inner hole section 141, and the pressure after the valve can be applied to the large-diameter pressure guiding plate 311 through the pressure guiding hole 15.
[0046] During operation, the pressure after the valve acts on the large-diameter guide plate 311, and the pressure before the valve acts on the small-diameter guide plate 312. Combined with the elastic force of the spring 50, the valve core 30 can automatically move axially according to the pressure change in the water circuit, so that the opening degree of the pressure reducing valve and the outlet pressure of the pressure reducing valve can be autonomously adjusted.
[0047] Among them, the small-diameter pressure guide plate 312 cooperates with the small inner hole section 142 to play a sliding guiding role, and the large-diameter pressure guide plate 311 cooperates with the large inner hole section 141 to also play a sliding guiding role, which improves the guiding accuracy of the valve core 30, further reduces the vibration of the valve core 30, ensures the stability of the downstream pressure, and further reduces noise.
[0048] Optionally, such as Figure 5 As shown, a second sealing groove is provided on the outer wall of the large-diameter pressure guide plate 311, and a second sealing ring 34 is placed in the second sealing groove. The outer ring of the second sealing ring 34 abuts against the inner wall of the large inner hole section 141, thereby ensuring the sealing performance between the large-diameter pressure guide plate 311 and the large inner hole section 141.
[0049] Optionally, such as Figure 5 As shown, a third sealing groove is provided on the outer wall of the small-diameter pressure guide plate 312. A third sealing ring 35 is placed in the third sealing groove, and the outer ring of the third sealing ring 35 abuts against the hole wall of the small inner hole section 142, thereby ensuring the sealing performance between the small-diameter pressure guide plate 312 and the small inner hole section 142.
[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A valve core holder for a pressure reducing valve, installed within the valve cavity of the pressure reducing valve, characterized in that, The valve core frame includes a partition ring (11) for dividing the valve cavity into a pre-valve pressure zone (201) on one side and a post-valve pressure zone (202) on the other side. A water passage hole (111) is formed on the inner edge of the partition ring (11). A retaining ring (12) protrudes from the side of the partition ring (11) facing the post-valve pressure zone (202) and surrounds the water passage hole (111).
2. The valve core holder of the pressure reducing valve according to claim 1, characterized in that, The valve core frame is also provided with a pressure guiding hole (15), one end of which extends into the pressure zone (202) after the valve and forms a first pressure guiding port (151); along the axial direction of the valve core frame and toward the pressure zone (202) after the valve, the axial height of the free end of the retaining ring (12) is greater than the axial height of the first pressure guiding port (151).
3. The valve core holder of the pressure reducing valve according to claim 2, characterized in that, The valve core frame also includes a pressure guide sleeve (14) and at least two pressure guide rods (13) spaced apart from each other. The pressure guide sleeve (14) is located in the pressure zone (201) before the valve. The two ends of the pressure guide rods (13) are fixed to the pressure guide sleeve (14) and the partition ring (11) respectively. The gap between two adjacent pressure guide rods (13) forms a water flow channel (16).
4. The valve core holder of the pressure reducing valve according to claim 3, characterized in that, The pressure guide sleeve (14) includes a large inner hole section (141) and a small inner hole section (142), and a step (143) is formed between the large inner hole section (141) and the small inner hole section (142). The pressure guide hole (15) simultaneously penetrates the small inner hole section (142), the pressure guide rod (13), and the separator ring (11).
5. The valve core holder of the pressure reducing valve according to claim 3, characterized in that, The pressure guide sleeve (14), the pressure guide rod (13), the partition ring (11), and the retaining ring (12) are integrally formed.
6. A pressure reducing valve, characterized in that, The valve includes a valve body (20), a valve core (30), and a valve core holder for a pressure reducing valve as described in any one of claims 1-5, wherein the valve core holder is disposed within the valve body (20), and the valve core (30) is axially movable within the valve core holder.
7. The pressure reducing valve according to claim 6, characterized in that, A first sealing groove is provided on the outer side wall of the separator ring (11), and a first sealing ring (112) is placed in the first sealing groove, and the outer ring of the first sealing ring (112) abuts against the inner wall of the valve body (20).
8. The pressure reducing valve according to claim 6, characterized in that, The valve core frame also includes a pressure guide sleeve (14) and at least two pressure guide rods (13) spaced apart from each other. The two ends of the pressure guide rods (13) are respectively fixed to the pressure guide sleeve (14) and the partition ring (11). The gap between two adjacent pressure guide rods (13) forms a water flow channel (16). The valve core (30) includes a pressure guiding part (31), a sealing part (33) and a connecting part (32). The two ends of the connecting part (32) are fixed to the pressure guiding part (31) and the sealing part (33) respectively. The pressure guiding part (31) is installed in the pressure guiding sleeve (14). The connecting part (32) passes through the partition ring (11). The sealing part (33) is located in the pressure zone (202) after the valve and is opposite to the water passage hole (111).
9. The pressure reducing valve according to claim 8, characterized in that, The pressure guiding sleeve (14) includes a large inner hole section (141) and a small inner hole section (142), and a step (143) is formed between the large inner hole section (141) and the small inner hole section (142). The pressure guiding hole (15) simultaneously penetrates the small inner hole section (142), the pressure guiding rod (13) and the partition ring (11). The pressure guiding part (31) includes a small-diameter pressure guiding plate (312) and a large-diameter pressure guiding plate (311) fixed to each other. The small-diameter pressure guiding plate (312) is sealed and installed in the small inner hole section (142). The pressure before the valve can be applied to the small-diameter pressure guiding plate (312) through the water flow channel (16). The large-diameter pressure guiding plate (311) is sealed and installed in the large inner hole section (141). The pressure after the valve can be applied to the large-diameter pressure guiding plate (311) through the pressure guiding hole (15).
10. The pressure reducing valve according to claim 9, characterized in that, A second sealing groove is provided on the outer wall of the large-diameter pressure guide plate (311), and a second sealing ring (34) is placed in the second sealing groove, and the outer ring of the second sealing ring (34) abuts against the inner wall of the large inner hole section (141). A third sealing groove is provided on the outer wall of the small diameter pressure guide plate (312), and a third sealing ring (35) is placed in the third sealing groove, and the outer ring of the third sealing ring (35) abuts against the hole wall of the small inner hole section (142).