Self-cleaning high-pressure opening large-flow one-way valve
By using a split valve core and guide sleeve structure, filter screen and pressure ring design, the problem of high-pressure check valve clogging is solved, achieving self-cleaning and high-flow-rate flow capability, and enhancing sealing performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAN JUQING TECHNOLOGY CO LTD
- Filing Date
- 2025-10-10
- Publication Date
- 2026-08-04
AI Technical Summary
Existing high-pressure check valves are prone to clogging in media containing solid impurities, causing obstruction or jamming of the valve core movement and making self-cleaning difficult.
A self-cleaning, high-pressure, high-flow-rate check valve was designed. It adopts a split valve core and guide sleeve structure, combined with a filter screen and pressure ring to reduce impurity accumulation, increase flow capacity, and improve sealing effect through a buffer chamber and rubber ring.
It achieves automatic removal of impurities during operation, enhances flow capacity and sealing performance, avoids obstruction and jamming of valve core movement, and improves self-cleaning capability.
Smart Images
Figure CN224592756U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of valve body technology, and in particular relates to a self-cleaning high-pressure opening large-flow one-way valve. Background Technology
[0002] High-pressure open check valves are a type of valve in the field of fluid control. Their main function is to allow fluid to flow freely in one direction and automatically shut off in the reverse direction. Some high-pressure open check valves have a self-cleaning structure, which can remove impurities from the valve by flushing with fluid each time it is opened or closed, preventing blockage. They are suitable for media containing impurities or easily sedimented media. Specifically, when the upstream fluid pressure reaches or exceeds the set opening pressure, the high-pressure fluid acts on the valve core (or valve disc), overcoming the spring force or its own weight, causing the valve to open and the fluid to pass smoothly; when the fluid attempts to flow in reverse or the upstream pressure decreases, the valve core quickly resets under the action of the spring or its own weight, the valve closes, and the backflow is prevented. However, in practical applications, such as in industrial settings, media (such as water, oil, and gas) often contain solid impurities or particles, especially in chemical, water treatment, and hydraulic systems. These particles can enter the valve body as the media flows. At the same time, the gap between the valve core and the guide sleeve in existing high-pressure check valves is very small, making it difficult for particles to be discharged on their own once they enter. As a result, particles accumulate and pile up in the gap, causing the valve core to move obstructed or even jam. Therefore, a self-cleaning high-pressure opening high-flow check valve is needed to solve the above problems. Utility Model Content
[0003] The purpose of this utility model embodiment is to provide a self-cleaning high-pressure opening large-flow one-way valve to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: A self-cleaning, high-pressure opening, high-flow-rate check valve includes: A one-way valve body includes a housing, a valve seat, and a valve core. The housing has an inlet, an outlet, and an exhaust port. The center of the inlet and the center of the exhaust port are at the same horizontal level. The valve seat is threadedly installed inside the housing at one end near the inlet. The valve core is installed inside the housing and at the end of the valve seat away from the inlet. The moving structure includes a spring and a guide sleeve. The guide sleeve has an internal mounting cavity, and the spring is placed in the mounting cavity. The guide sleeve is slidably disposed inside the housing. The two ends of the spring are respectively connected to the inner wall of the housing near the exhaust port and the bottom wall of the mounting cavity. The outer wall of the guide sleeve away from the spring and the end face of the valve core away from the valve seat are in contact with each other, and the gap between the guide sleeve and the valve core is connected to the outlet.
[0005] In a further technical solution, the one-way valve body also includes a filter screen and a pressure ring. The housing has a mounting groove at one end near the exhaust port. The cross-sections of the mounting groove, the filter screen, and the pressure ring are all circular. The filter screen is placed in the mounting groove, and the pressure ring is placed in the mounting groove. The pressure ring is in contact with the filter screen, and the sidewall of the pressure ring is in contact with the sidewall of the mounting groove.
[0006] In a further technical solution, the one-way valve body also includes a pair of sealing rings and a pair of retaining rings. The inner wall of the housing has a pair of placement grooves, and the pair of placement grooves are respectively placed on the outlet side. One of the sealing rings and one of the retaining rings in the pair are placed in one of the placement grooves and fit against the side wall of the valve seat. The other sealing ring and the other retaining ring in the pair are placed in the other placement groove and fit against the side wall of the guide sleeve.
[0007] In a further technical solution, the guide sleeve has a limiting post on the bottom wall of the mounting cavity away from the exhaust port, and the spring is sleeved on the limiting post.
[0008] In a further technical solution, the one-way valve body also includes a rubber ring, the valve core has an annular groove on one end face near the valve seat, the rubber ring is placed in the annular groove, and one end of the valve seat abuts against the rubber ring.
[0009] In a further technical solution, the housing has a buffer cavity in the middle section where the pressure ring and the filter screen are in contact, and the buffer cavity is connected to the outlet.
[0010] Compared with the prior art, the beneficial effects of this utility model are: This utility model features a motion structure comprising a spring and a guide sleeve. The guide sleeve has an internal mounting cavity, and the spring is housed within this cavity. The guide sleeve is slidably disposed within a housing. The two ends of the spring are respectively connected to the inner wall of the housing near the exhaust port and the bottom wall of the mounting cavity. The outer wall of the guide sleeve away from the spring and the end face of the valve core away from the valve seat are in contact with each other, and the gap between the guide sleeve and the valve core is connected to the outlet. The spring and the medium are separated by the guide sleeve, and the mounting cavity is connected to the atmosphere through the exhaust port. Furthermore, the valve core and guide sleeve are of a separate structure, with the outlet pressure acting on the valve core and the inlet... The area of the pressure acting on the valve core is equal to the area corresponding to the valve core sealing diameter. Since the two forces act in opposite directions, they can cancel each other out, thereby reducing the influence of the medium force on the valve core's movement. Under unchanged working conditions, the inlet and outlet diameters can be increased, thereby improving the flow capacity of the check valve body. In addition, the guide surface for the valve core movement is located near the inlet end where the valve core contacts the housing, avoiding the formation of a dead cavity at the contact point between the valve core and the housing. During operation, particles and other impurities in the medium flow out with the medium, reducing the accumulation of impurities in the dead cavity and achieving self-cleaning. This utility model includes a filter screen and a pressure ring. The housing has a mounting groove at one end near the exhaust port. The cross-sections of the mounting groove, the filter screen, and the pressure ring are all circular. The filter screen is placed in the mounting groove, and the pressure ring is placed in the mounting groove. The pressure ring is in close contact with the filter screen, and the side wall of the pressure ring is in close contact with the side wall of the mounting groove. By setting the pressure ring, the filter screen is fixed in the mounting groove. By setting the filter screen, the air at the exhaust port is filtered.
[0011] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description
[0012] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a cross-sectional view of the housing of this utility model.
[0013] In the diagram: 1. One-way valve body; 11. Housing; 111. Inlet; 112. Outlet; 113. Exhaust port; 114. Mounting groove; 115. Placement groove; 116. Buffer chamber; 12. Valve seat; 13. Valve core; 14. Filter screen; 15. Pressure ring; 16. Sealing ring; 17. Retaining ring; 18. Rubber ring; 2. Moving structure; 21. Spring; 22. Guide sleeve; 221. Mounting chamber; 222. Limiting post. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0015] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0016] like Figures 1 to 3 As shown, this utility model embodiment provides a self-cleaning, high-pressure opening, high-flow-rate one-way valve, comprising: The one-way valve body 1 includes a housing 11, a valve seat 12, and a valve core 13. The housing 11 has an inlet 111, an outlet 112, and an exhaust port 113. The inlet 111, outlet 112, and exhaust port 113 are all connected, and the center of the inlet 111 and the center of the exhaust port 113 are at the same horizontal level. The valve seat 12 is threadedly installed inside the housing 11 at one end near the inlet 111. The valve core 13 is installed inside the housing 11 and at the end of the valve seat 12 away from the inlet 111. The motion structure 2 includes a spring 21 and a guide sleeve 22. The guide sleeve 22 has an installation cavity 221 inside. The spring 21 is placed in the installation cavity 221. The guide sleeve 22 is slidably disposed inside the housing 11. The two ends of the spring 21 are respectively connected to the inner wall of the housing 11 near the exhaust port 113 and the bottom wall of the installation cavity 221. The outer wall of the guide sleeve 22 away from the spring 21 is in contact with the end face of the valve core 13 away from the valve seat 12. The gap between the guide sleeve 22 and the valve core 13 is connected to the outlet 112. In this embodiment, the spring 21 is separated from the medium by the guide sleeve 22, and the mounting cavity 221 is connected to the atmosphere through the exhaust port 113. The valve core 13 and the guide sleeve 22 adopt a split structure. The area of the outlet 112 pressure acting on the valve core 13 and the area of the inlet 111 pressure acting on the valve core 13 are both equal to the area corresponding to the sealing diameter of the valve core 13. Since the two forces act in opposite directions, they can cancel each other out, thereby reducing the influence of the medium force on the valve core 13's movement. Under the same working conditions, the inlet 111 and outlet 112 can be increased, thereby improving the flow capacity of the one-way valve body 1. In addition, the guide surface of the valve core 13 is located near the end of the inlet 111 where the valve core 13 contacts the housing 11, avoiding the formation of a dead cavity at the contact point between the valve core 13 and the housing 11. During operation, impurities such as particles in the medium flow out with the medium, reducing the accumulation of impurities at the dead cavity location and achieving the purpose of self-cleaning. Specifically, the one-way valve body 1 also includes a filter screen 14 and a pressure ring 15. The housing 11 has a mounting groove 114 at one end near the exhaust port 113. The cross-sections of the mounting groove 114, the filter screen 14, and the pressure ring 15 are all circular. The filter screen 14 is placed in the mounting groove 114, and the pressure ring 15 is placed in the mounting groove 114. The pressure ring 15 is in contact with the filter screen 14, and the side wall of the pressure ring 15 is in contact with the side wall of the mounting groove 114. In this embodiment, a pressure ring 15 is provided to fix the filter screen 14 in the mounting groove 114; the filter screen 14 is provided to filter the air at the exhaust port 113. Specifically, the one-way valve body 1 also includes a pair of sealing rings 16 and a pair of retaining rings 17. The inner wall of the housing 11 has a pair of placement grooves 115. The pair of placement grooves 115 are respectively placed on one side of the outlet 112. One of the sealing rings 16 and one of the retaining rings 17 are placed in one of the placement grooves 115 and are in contact with the side wall of the valve seat 12. The other sealing ring 16 and the other retaining ring 17 are placed in the other placement groove 115 and are in contact with the side wall of the guide sleeve 22. In this embodiment, by providing a sealing ring 16 and a retaining ring 17, the medium is prevented from flowing out from the gap between the housing 11 and the valve seat 12, as well as the gap between the housing 11 and the guide sleeve 22. Specifically, the guide sleeve 22 has a limiting post 222 on the bottom wall of the mounting cavity 221 away from the exhaust port 113, and the spring 21 is sleeved on the limiting post 222; In this embodiment, the position of the spring 21 is limited by setting a limiting post 222 to prevent the spring 21 from shaking randomly in the mounting cavity 221; Specifically, the one-way valve body 1 also includes a rubber ring 18, which is placed on one end face of the valve core 13 near the valve seat 12, and one end of the valve seat 12 abuts against the rubber ring 18. In this embodiment, the sealing effect of the valve seat 12 and the valve core 13 is enhanced by setting the rubber ring 18; Specifically, the housing 11 has a buffer cavity 116 in the middle section where the pressure ring 15 and the filter screen 14 are attached, and the buffer cavity 116 is connected to the outlet 112. In this embodiment, by setting a buffer chamber 116, the dead cavity volume at the outlet 112 position is reduced, allowing impurities in the medium to flow better with the medium, avoiding the accumulation of impurities at the dead cavity position of the outlet 112, thereby improving the adaptability and self-cleaning ability of the one-way valve body 1.
[0017] The working principle of this utility model is as follows: During installation, the housing 11 is connected to the butt joint by four bolts; in the initial state, there is no medium pressure in the inlet 111 and the outlet 112; under the action of elasticity, the compressed spring 21 drives the side wall of the guide sleeve 22 to contact and press against the end face of the valve core 13. At this time, the inlet 111 and the outlet 112 are not connected, and the one-way valve body 1 is in the closed state. When there is medium pressure at outlet 112, the medium pressure at outlet 112 causes valve core 13 to be in the closed state. At the same time, the elastic force of spring 21 is applied to valve core 13 through guide sleeve 22, thereby increasing the sealing force of valve core 13 when it is closed. When there is medium pressure at the inlet 111, and the medium pressure at the inlet 111 is less than the medium pressure at the outlet 112, the medium pressure at the inlet 111 is less than the force exerted by the medium at the outlet 112 on the valve core 13, so the valve core 13 remains closed. At the same time, the elastic force of the spring 21 acts on the valve core 13, improving the sealing performance of the valve core 13. When there is medium pressure at the inlet 111, and the medium pressure at the inlet 111 is greater than the pressure at the outlet 112, the force of the medium at the inlet 111 on the valve core 13 overcomes the combined force of the medium force at the outlet 112 and the elastic force of the spring 21, thus opening the valve core 13. As the pressure of the medium at inlet 111 gradually decreases, the force exerted by the medium at inlet 111 on valve core 13 also decreases. When the medium force at inlet 111 is less than the spring force of spring 21 and the medium force at outlet 112, valve core 13 closes.
[0018] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 self-cleaning high-pressure opening large-flow check valve, characterized in that, include: One-way valve body (1), the one-way valve body (1) includes a housing (11), a valve seat (12) and a valve core (13), the housing (11) has an inlet (111), an outlet (112) and an exhaust port (113), the center of the inlet (111) and the center of the exhaust port (113) are at the same horizontal height, the valve seat (12) is threaded to the end of the housing (11) near the inlet (111), the valve core (13) is installed inside the housing (11) and is installed at the end of the valve seat (12) away from the inlet (111); The motion structure (2) includes a spring (21) and a guide sleeve (22). The guide sleeve (22) has an installation cavity (221) inside. The spring (21) is placed in the installation cavity (221). The guide sleeve (22) is slidably disposed inside the housing (11). The two ends of the spring (21) are respectively connected to the inner wall of the housing (11) near the exhaust port (113) and the bottom wall of the installation cavity (221). The outer wall of the guide sleeve (22) away from the spring (21) and the end face of the valve core (13) away from the valve seat (12) are in contact with each other. The gap between the guide sleeve (22) and the valve core (13) is connected to the outlet (112). The installation cavity (221) is connected to the atmosphere through the exhaust port (113).
2. The self-cleaning high-pressure opening large-flow check valve according to claim 1, characterized in that: The one-way valve body (1) also includes a filter screen (14) and a pressure ring (15). The housing (11) has a mounting groove (114) at one end near the exhaust port (113). The cross-sections of the mounting groove (114), the filter screen (14), and the pressure ring (15) are all circular. The filter screen (14) is placed in the mounting groove (114), and the pressure ring (15) is placed in the mounting groove (114). The pressure ring (15) is in contact with the filter screen (14), and the side wall of the pressure ring (15) is in contact with the side wall of the mounting groove (114).
3. The self-cleaning high-pressure opening high-flow-rate check valve according to claim 2, characterized in that: The one-way valve body (1) also includes a pair of sealing rings (16) and a pair of retaining rings (17). The inner wall of the housing (11) has a pair of placement grooves (115). The pair of placement grooves (115) are respectively placed on one side of the outlet (112). One of the sealing rings (16) and one of the retaining rings (17) are placed in one of the placement grooves (115) and are in contact with the side wall of the valve seat (12). The other sealing ring (16) and the other retaining ring (17) are placed in the other placement groove (115) and are in contact with the side wall of the guide sleeve (22).
4. A self-cleaning, high-pressure, high-flow-rate check valve according to claim 3, characterized in that: The guide sleeve (22) has a limiting post (222) on the bottom wall of the mounting cavity (221) away from the exhaust port (113), and the spring (21) is sleeved on the limiting post (222).
5. A self-cleaning, high-pressure, high-flow-rate check valve according to claim 4, characterized in that: The one-way valve body (1) also includes a rubber ring (18), which is placed on one end face of the valve core (13) near the valve seat (12), and one end of the valve seat (12) abuts against the rubber ring (18).
6. A self-cleaning, high-pressure, high-flow-rate check valve according to claim 5, characterized in that: The housing (11) has a buffer cavity (116) inside the middle section where the pressure ring (15) and the filter screen (14) fit together, and the buffer cavity (116) is connected to the outlet (112).