Wear-resistant silencing check valve
By using wear-resistant rings, sealing grooves, and sleeve protection spring design in the sound-silent check valve, the problems of valve disc wear and spring erosion are solved, and better sealing effect and service life are achieved.
Patent Information
- Application Number
- CN202422130472.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-01
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-01
AI Technical Summary
During use, the valve disc is easily worn and the spring is easily washed by liquid and the service life is affected.
A wear-resistant sound-relieving check valve is designed, using wear-resistant rings and sealing grooves to improve the service life of the valve disc, and is set on the outside of the spring through a sleeve to prevent liquid from directly eroding the spring.
It effectively avoids direct contact wear between the valve disc and the inner wall of the cavity, extends the service life of the valve disc, and protects the spring, improves its service life, and improves the movement stability of the valve disc.
Smart Images
Figure CN222977501U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of check valves, in particular to an abrasion-resistant silencing check valve. Background Art
[0002] A silencing check valve refers to a valve that automatically opens and closes the valve flap relying on the flow of the medium itself to prevent the reverse flow of the medium, also known as a non-return valve, a one-way valve, a silencing check valve, a reverse flow valve, and a back pressure valve. A check valve belongs to an automatic valve, and its main functions are to prevent the reverse flow of the medium, prevent the pump and the driving motor from reversing, and the discharge of the container medium. The check valve can also be used on the pipeline for supplying the auxiliary system in which the pressure may rise above the system pressure.
[0003] According to the disclosed patent CN212155930, an abrasion-resistant silencing check valve includes a pressure dividing end, an inlet end, an outlet end, and a valve body. By using a second spring, a buffer layer, and a buffer block, it is avoided that the valve flap violently impacts the internal parts of the valve cavity when rebounding, reducing the wear of the parts and increasing the abrasion resistance.
[0004] In the process of implementing the present utility model, the inventor found that at least the following problems in the prior art have not been solved. In the above case, during use, the inlet end is mainly blocked by inserting the valve flap into the buffer groove. Although a buffer mechanism is provided, it is inevitable to come into contact with the inner wall of the valve body, and wear will still occur after long-term use, affecting the blocking effect. Moreover, the spring is exposed in the valve body, and when the liquid passes through the valve body, it will directly wash the spring, affecting the service life of the spring. Therefore, a new technical solution needs to be designed to solve this problem. Summary of the Utility Model
[0005] The purpose of the present utility model is to overcome the deficiencies of the prior art, adapt to the actual needs, and provide an abrasion-resistant silencing check valve to solve the technical problems that the current valve flap is prone to wear and the spring is prone to be washed by the liquid, affecting the service life.
[0006] To achieve the purpose of the present utility model, the technical solution adopted by the present utility model is as follows: Design a wear-resistant silencing check valve, including a valve body. A cavity is provided inside the valve body. An inlet and an outlet are respectively provided through both ends of the cavity. A valve flap is movably connected inside the cavity. A spring is provided on the side of the valve flap away from the inlet. One end of the spring away from the valve flap is fixedly connected to one end of a limit post; First wear-resistant mechanism: used to improve the service life of the valve flap. The first wear-resistant mechanism includes a wear-resistant ring and a sealing groove. The wear-resistant ring is fixedly installed on the side of the valve flap close to the inlet. The sealing groove is provided on the inner wall of the cavity close to the inlet. The wear-resistant ring is movably connected with the sealing groove. A rubber pad is bonded to the side of the valve flap where the wear-resistant ring is installed; Second wear-resistant mechanism: used to improve the service life of the spring. The second wear-resistant mechanism includes a sleeve. The sleeve is sleeved on the outside of the spring. One end of the sleeve is fixedly installed on the side of the valve flap close to the spring. The sleeve is slidably connected with the limit post.
[0007] Preferably, a limit groove is provided inside the limit post. A limit rod is slidably connected inside the limit groove. One end of the limit rod outside the limit groove is fixedly connected to the middle of the outside of the valve flap.
[0008] Preferably, the spring is sleeved on the outside of the limit rod, and the limit rod and the limit groove are matched in size.
[0009] Preferably, the sealing groove is annular, and the wear-resistant ring and the sealing groove are matched in size.
[0010] Preferably, the rubber pad is placed on the outside of the wear-resistant ring, and the rubber pad is attached to the inner wall of the cavity.
[0011] Preferably, four groups of fixing rods are evenly installed at the end of the limit post away from the spring. One end of the fixing rod away from the limit post is fixedly connected to the inner wall of the cavity.
[0012] Preferably, the valve flap and the inlet are matched in size, and the sleeve and the limit post are matched in size.
[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0014] 1. When the liquid flows into the inlet of the present utility model, the liquid pressure is greater than the elastic force of the spring, which can push the valve flap close to the outlet and open the inlet to realize the liquid circulation operation. When the liquid pressure is less than the elastic force of the spring, the spring can push the valve flap close to the inlet, thereby pushing the wear-resistant ring on the outside of the valve flap into the sealing groove on the inner wall of the cavity. On the one hand, it can prevent the valve flap from directly contacting the inner wall of the cavity and causing wear when the valve flap closes the inlet. On the other hand, after the wear-resistant ring is worn, the valve flap can continue to block the inlet, and the sealing effect is good.
[0015] 2. The utility model sleevs a sleeve on the outside of the spring, and the sleeve is slidably connected with the limit post. On the one hand, the sleeve can prevent the liquid from directly flushing the spring and affecting the service life of the spring. On the other hand, it can improve the moving stability of the valve flap. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic structural view of the utility model;
[0017] Figure 2 is a schematic view of the valve flap of the utility model;
[0018] Figure 3 is a side view of the rubber pad of the utility model;
[0019] In the figure: 1, valve body; 10, cavity; 11, valve flap; 12, liquid inlet; 13, liquid outlet; 14, spring; 15, fixing rod; 16, limit post; 17, limit groove; 18, limit rod; 2, wear-resistant ring; 21, sealing groove; 22, sleeve; 23, rubber pad. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] The following further describes the utility model with reference to the drawings and embodiments:
[0021] A wear-resistant silencing check valve, see Figures 1 to 3 , including a valve body 1, a cavity 10 is opened inside the valve body 1, a liquid inlet 12 and a liquid outlet 13 are respectively penetrated through both ends of the cavity 10, a valve flap 11 is movably connected inside the cavity 10, a spring 14 is arranged on the side of the valve flap 11 away from the liquid inlet 12, one end of the spring 14 away from the valve flap 11 is fixedly connected with one end of a limit post 16, four groups of fixing rods 15 are uniformly installed at the end of the limit post 16 away from the spring 14, and the end of the fixing rod 15 away from the limit post 16 is fixedly connected with the inner wall of the cavity 10; a first wear-resistant mechanism: used to improve the service life of the valve flap 11, the first wear-resistant mechanism includes a wear-resistant ring 2 and a sealing groove 21, the wear-resistant ring 2 is fixedly installed on the side of the valve flap 11 close to the liquid inlet 12, the sealing groove 21 is opened on the inner wall of the cavity 10 on the side close to the liquid inlet 12, the wear-resistant ring 2 is movably connected with the sealing groove 21, the sealing groove 21 is annular, and the sizes of the wear-resistant ring 2 and the sealing groove 21 are matched, and the sizes of the valve flap 11 and the liquid inlet 12 are matched.
[0022] When the liquid flows in from the liquid inlet 12 and the liquid pressure is greater than the elastic force of the spring 14, it can push the valve flap 11 close to the liquid outlet 13 and open the liquid inlet 12, and the liquid circulation operation is realized through the cavity 10 and the liquid outlet 13. When the liquid pressure is less than the elastic force of the spring 14, the spring 14 can push the valve flap 11 close to the liquid inlet 12, thereby pushing the wear-resistant ring 2 on the outside of the valve flap 11 into the sealing groove 21 on the inner wall of the cavity 10 to further close the liquid inlet 12. On the one hand, it can avoid the valve flap 11 directly contacting the inner wall of the cavity 10 when the valve flap 11 closes the liquid inlet 12, resulting in wear of the valve flap 11. On the other hand, after the wear-resistant ring 2 is worn, the valve flap 11 can continue to block the liquid inlet 12, and the sealing effect is good.
[0023] Specifically, refer to Figures 1 to 3 , the second wear-resistant mechanism: used to improve the service life of the spring 14. The second wear-resistant mechanism includes a sleeve 22, the sleeve 22 is sleeved on the outside of the spring 14, one end of the sleeve 22 is fixedly installed on the side of the valve flap 11 close to the spring 14, the sleeve 22 is slidably connected with the limit post 16, and the sizes of the sleeve 22 and the limit post 16 are matched.
[0024] By sleeving the sleeve 22 on the outside of the spring 14 and the sleeve 22 being slidably connected with the limit post 16, on the one hand, the sleeve 22 can prevent the liquid from directly flushing the spring 14 and affecting the service life of the spring 14. On the other hand, it can improve the movement stability of the valve flap 11.
[0025] Furthermore, refer to Figures 1 to 3 , a limit groove 17 is opened inside the limit post 16, a limit rod 18 is slidably connected inside the limit groove 17, one end of the limit rod 18 outside the limit groove 17 is fixedly connected to the middle part outside the valve flap 11, the spring 14 is sleeved on the outside of the limit rod 18, and the sizes of the limit rod 18 and the limit groove 17 are matched.
[0026] By the limit rod 18 in the middle part outside the valve flap 11 being slidably connected with the limit groove 17, the valve flap 11 can be limited to improve the stability of the valve flap 11 during the movement process. Moreover, the limit rod 18 can limit the spring 14 to prevent the spring 14 from tilting during the compression and extension processes, affecting the use effect of the spring 14.
[0027] It should be noted that, refer to Figures 1 to 3 , a rubber pad 23 is bonded to the side of the valve flap 11 where the wear-resistant ring 2 is installed. The rubber pad 23 is placed outside the wear-resistant ring 2 and is in contact with the inner wall of the cavity 10.
[0028] When the wear-resistant ring 2 is inserted into the sealing groove 21, through the rubber pad 23 outside the wear-resistant ring 2, it can be in contact with the inner wall of the cavity 10 to further double-seal the liquid inlet 12, and the sealing effect is better.
[0029] In addition, the components designed by the present utility model are all common standard components or components known to those skilled in the art. Their structures and principles can all be learned by those skilled in the art through technical manuals or through conventional experimental methods. Those skilled in the art can fully implement them without further elaboration. The content protected by the present utility model also does not involve improvements to internal structures and methods.
[0030] The embodiments disclosed in the present utility model are preferred embodiments, but are not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present utility model based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present utility model, they are all within the protection scope of the present utility model.
Claims
1. A wear-resistant muffler check valve, comprising a valve body (1), wherein a cavity (10) is provided inside the valve body (1), and a liquid inlet (12) and a liquid outlet (13) are respectively provided at both ends of the cavity (10), wherein: The cavity (10) is movably connected to a valve flap (11), a spring (14) is provided on a side of the valve flap (11) away from the liquid inlet (12), and one end of the spring (14) away from the valve flap (11) is fixedly connected to one end of a limiting column (16); A first wear-resistant mechanism: used to increase the service life of the valve flap (11), the first wear-resistant mechanism comprising a wear-resistant ring (2) and a sealing groove (21), the wear-resistant ring (2) being fixedly mounted on a side of the valve flap (11) close to the liquid inlet (12), the sealing groove (21) being arranged on an inner wall of the cavity (10) close to the liquid inlet (12), the wear-resistant ring (2) being movably connected to the sealing groove (21), and a rubber pad (23) being bonded to a side of the valve flap (11) on which the wear-resistant ring (2) is mounted; A second wear-resistant mechanism: used to increase the service life of the spring (14), the second wear-resistant mechanism comprises a sleeve (22), the sleeve (22) is sleeved on the outside of the spring (14), one end of the sleeve (22) is fixedly mounted on a side of the valve disc (11) close to the spring (14), and the sleeve (22) is slidably connected to the limit column (16).
2. A wear-resistant muffler check valve as claimed in claim 1, characterized in that: A limiting groove (17) is provided inside the limiting column (16), and a limiting rod (18) is slidably connected inside the limiting groove (17). One end of the limiting rod (18) is arranged outside the limiting groove (17) and is fixedly connected to the middle part of the outside of the valve flap (11).
3. A wear-resistant muffler check valve as claimed in claim 2, characterized in that: The spring (14) is sleeved on the outside of the limiting rod (18), and the size of the limiting rod (18) matches that of the limiting groove (17).
4. A wear-resistant muffler check valve as claimed in claim 1, characterized in that: The sealing groove (21) is annular in shape, and the sizes of the wear-resistant ring (2) and the sealing groove (21) match each other.
5. A wear-resistant muffler check valve as claimed in claim 1, characterized in that: The rubber pad (23) is placed on the outside of the wear-resistant ring (2), and the rubber pad (23) is in contact with the inner wall of the cavity (10).
6. A wear-resistant muffler check valve as claimed in claim 1, characterized in that: Four groups of fixing rods (15) are evenly mounted on one end of the limiting column (16) away from the spring (14); one end of the fixing rod (15) away from the limiting column (16) is fixedly connected to the inner wall of the cavity (10).
7. A wear-resistant muffler check valve as claimed in claim 1, characterized in that: The size of the valve flap (11) matches that of the liquid inlet (12), and the size of the sleeve (22) matches that of the limiting column (16).