Wear-resistant check valve
By adopting buffer components and guide structure in the check valve, the wear and vibration problems caused by friction between the valve core and the valve housing at high pressure and high flow velocity are solved, which extends the valve life and improves sealing and stability.
Patent Information
- Application Number
- CN202421022439.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-11
AI Technical Summary
Under high pressure and high flow velocity conditions, friction between the check valve core and the valve housing leads to an increased risk of wear and leakage, and vibration and impact during reset shortens the valve life.
A wear-resistant check valve is designed, adopting buffer assembly and guide structure, including a tapered spring, annular slot, buffer spring and limit ring, which absorbs impact force through the buffer spring to reduce direct collision between the valve core and the valve shell. and vibration, and ensure the stability and sealing of the valve core through guide rods and limit rings.
It effectively reduces wear and vibration between the valve core and the valve shell, extends the service life of the valve, and avoids excessive opening and closing of the valve core, improving sealing and stability.
Smart Images
Figure CN222277563U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of check valves, in particular to a wear-resistant check valve. Background Art
[0002] In the field of industrial fluid control, check valve plays a vital role. It is one of the key components to ensure the safe and stable operation of the pipeline system. As a special valve, the main function of the check valve is to prevent the medium from flowing back during the fluid flow, thereby protecting the pipeline system and related equipment from potential damage and failure.
[0003] In applications with high pressure and high flow rate, the valve core is very likely to collide and rub against the valve housing when it is opened, increasing the risk of valve wear and leakage. Some check valves will produce greater vibration and impact when the valve core is reset, causing wear and failure, and shortening the life of the valve. Utility Model Content
[0004] In view of this, the utility model provides a wear-resistant check valve, which can effectively reduce the impact and vibration between the valve core and the valve housing, and avoid excessive opening and closing of the valve core.
[0005] In order to solve the above technical problems, the utility model provides a wear-resistant check valve, including a valve shell and a buffer assembly, wherein the inner wall at one end of the valve shell is fixedly connected to a plurality of support plates arranged in an array around the central axis of the valve shell, one end of the support plate is fixedly connected to the same limiting ring, a slide groove is provided in the middle of the limiting ring, a guide column is slidably connected to the middle of the slide groove, a valve core is fixedly connected to the middle of one end of the guide column, a conical spring is fixedly connected between one end of the valve core and the limiting ring, a column in the middle of the guide column is arranged in the middle of the conical spring, a buffer assembly is arranged at the other end of the valve shell, and the buffer assembly is arranged at the other end of the valve shell. The punch assembly includes a limit frame and an annular groove. The inner end of the valve shell near the water inlet of the valve shell is fixedly connected to the limit frame, and the middle part of the limit frame is slidably connected to the annular groove. The opening of the annular groove faces the valve core, and one end of the valve core is inserted in the middle part of the annular groove. The thickness of one end of the valve core is equal to the opening width of the end of the limit frame facing the valve core, and the width of the annular groove is greater than the opening width of the end of the limit frame facing the valve core. When the valve core is reset, the impact and vibration between the valve core and the valve shell can be effectively reduced, the excessive opening and closing of the valve core can be avoided, and the direct collision between the valve core and the valve shell is effectively reduced.
[0006] The buffer assembly also includes a buffer spring, and a plurality of buffer springs are fixedly connected between the inner wall of one side of the limit frame and the outer wall of one side of the annular groove in an array around the central axis of the annular groove; that is, the wear between the valve core and the valve housing is reduced.
[0007] A plurality of guide rods are fixedly connected to the middle of the valve housing, and the middle of the guide rods are slidably connected to the middle of the valve core, that is, the valve core is prevented from deflecting during the opening and closing process.
[0008] The middle part of the guide rod is fixedly connected with a limit ring, which provides stable support and limitation for the valve core.
[0009] The inner wall of the limit ring is chamfered, and the angle of the chamfer is consistent with the angle of the outer wall of the valve core; that is, friction and wear are reduced, and the durability of the valve core is improved.
[0010] Both ends of the valve housing are fixedly connected with flanges; that is, they are used to connect the valve to the pipeline system.
[0011] The valve core is conical, and the opening of the valve core faces the water inlet of the valve housing; that is, it is conducive to uniformly transmitting water pressure.
[0012] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:
[0013] 1. When the valve core is reset, the buffer spring is compressed to absorb the impact force of the valve core when it is reset, reducing the wear and vibration between the valve core and the valve housing. When the valve core is completely reset, the elastic force of the buffer spring will make the annular groove fit tightly against the outer wall of the valve core, thereby achieving sealing and buffering of the valve core, which can effectively reduce the impact and vibration between the valve core and the valve housing and extend the service life of the check valve.
[0014] 2. When the valve core is pushed by the water flow, the valve core continues to approach the water outlet of the valve housing, and finally the valve core contacts the limit ring. The valve core can smoothly fit with the chamfer of the limit ring to avoid excessive opening and closing of the valve core, effectively reducing the direct collision between the valve core and the valve housing. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the structure of a wear-resistant check valve of the utility model;
[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;
[0017] Figure 3 It is a schematic diagram of the structure of the utility model enlarged at A;
[0018] Figure 4 It is a schematic diagram of the structure of the chamfer of the utility model;
[0019] Figure 5 It is a schematic diagram of the overall structure of the utility model.
[0020] Description of reference numerals:
[0021] 100, valve housing; 101, support plate; 102, stop ring; 103, guide column; 104, valve core; 105, conical spring; 106, guide rod; 107, stop ring; 108, chamfer; 109, flange;
[0022] 201, limit frame; 202, annular slot; 203, buffer spring; DETAILED DESCRIPTION
[0023] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the following will be combined with the appended drawings of the embodiment of the utility model. Figure 1-5 , the technical scheme of the embodiment of the utility model is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.
[0024] like Figure 1-5 As shown: This embodiment provides a wear-resistant check valve, including a valve housing 100 and a buffer assembly, both ends of the valve housing 100 are fixedly connected with flanges 109, a plurality of support plates 101 arranged in an array around the central axis of the valve housing 100 are fixedly connected to the inner wall of one end of the valve housing 100, one end of the support plate 101 is fixedly connected to the same limiting ring 102, a slide groove is provided in the middle of the limiting ring 102, a guide column 103 is slidably connected to the middle of the slide groove, a valve core 104 is fixedly connected to the middle of one end of the guide column 103, the valve core 104 is conical, the opening of the valve core 104 faces the water inlet of the valve housing 100, a conical spring 105 is fixedly connected between one end of the valve core 104 and the limiting ring 102, and the column in the middle of the guide column 103 is arranged in the middle of the conical spring 105;
[0025] The flange 109 is used to connect the valve to the pipeline system and provide a stable installation foundation. During operation, the medium enters the valve housing 100 through the water inlet of the valve housing 100. As the medium flow increases, the medium pressure gradually increases, pushing the valve core 104 to move toward the water outlet of the valve housing 100. The conical valve core 104 can make the pressure on the valve core 104 be more evenly transmitted to the guide column 103. The guide column 103 is pushed, and the guide ring moves axially. At the same time, the conical spring 105 is compressed. When the medium flow decreases or the medium pressure decreases, the medium tries to flow back. The elastic force of the conical spring 105 will reset the valve core 104, and the valve core 104 and the water inlet of the valve housing 100 will re-form a seal to prevent the medium from flowing back. The guide column 103 ensures the directional stability of the valve core 104 during the opening and closing process, reducing the vibration caused by the impact of the medium.
[0026] Buffer components such as Figure 2 , 3 , 4,
[0027] A buffer assembly is provided at the other end of the valve housing 100, and the buffer assembly includes a limit frame 201, an annular groove 202 and a buffer spring 203. One end of the valve housing 100 near the water inlet of the valve housing 100 is fixedly connected to the limit frame 201, and the middle part of the limit frame 201 is slidably connected with the annular groove 202, and the opening of the annular groove 202 faces the valve core 104, and one end of the valve core 104 is inserted in the middle part of the annular groove 202. The thickness of one end of the valve core 104 is equal to the opening width of the limit frame 201 at one end facing the valve core 104, and the width of the annular groove 202 is greater than the limit frame 201. The opening width of the end of the positioning frame 201 facing the valve core 104, a plurality of guide rods 106 are fixedly connected to the middle of the valve housing 100, the middle of the guide rods 106 are all slidably connected to the middle of the valve core 104, the middle of the guide rods 106 are all fixedly connected to the same limiting ring 107, the inner wall of the limiting ring 107 is provided with a chamfer 108, the angle of the chamfer 108 is consistent with the angle of the outer wall of the valve core 104, and a plurality of buffer springs 203 arranged around the central axis of the annular groove 202 are fixedly connected between the inner wall of one side of the positioning frame 201 and the outer wall of one side of the annular groove 202;
[0028] When the valve core 104 is reset, one end of the valve core 104 first contacts the annular groove 202, and the valve core 104 is inserted into the annular groove 202. Then, the valve core 104 continues to move toward the water inlet of the valve housing 100, and one end of the valve core 104 drives the annular groove 202 to continuously approach the water inlet. In this process, the buffer spring 203 is compressed to absorb the impact force when the valve core 104 is reset, thereby reducing the wear and vibration between the valve core 104 and the valve housing 100. When the valve core 104 is completely reset, the elastic force of the buffer spring 203 makes the annular groove 202 fit closely to the outer wall of the valve core 104, thereby achieving The sealing and buffering of the valve core 104 can effectively reduce the impact and vibration between the valve core 104 and the valve housing 100, thereby extending the service life of the check valve. When the valve core 104 is pushed by the water flow, the valve core 104 continues to approach the water outlet of the valve housing 100, and finally the valve core 104 contacts the limit ring 107. The valve core 104 can smoothly fit with the chamfer 108 of the limit ring 107 to avoid excessive opening and closing of the valve core 104, thereby effectively reducing the direct collision between the valve core 104 and the valve housing 100. At the same time, the limit ring 107 can also effectively prevent the valve core 104 from shaking when impacted by the water flow, thereby improving the stability of the valve core 104.
[0029] Working principle:
[0030] The medium enters the valve housing through the water inlet of the valve housing. As the medium flow increases, the medium pressure increases, pushing the valve core to move toward the water outlet of the valve housing. At this time, the guide column is pushed and the conical spring is compressed. When the medium flow decreases or the pressure decreases, the elastic force of the conical spring resets the valve core and re-seals the water inlet of the valve housing to prevent the medium from flowing back. When the valve core is reset, one end of it first contacts and inserts into the annular groove, driving the annular groove to continuously approach the water inlet. In this process, the buffer spring is compressed to absorb the impact force when the valve core is reset. After the valve core is completely reset, the elastic force of the buffer spring makes the annular groove fit tightly against the outer wall of the valve core, realizing the sealing and buffering of the valve core. When the valve core is pushed by the water flow, the valve core continuously approaches the water outlet of the valve housing and finally contacts the limit ring. The valve core can smoothly fit the chamfer of the limit ring to prevent the valve core from opening and closing excessively.
[0031] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0032] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A wear-resistant check valve, characterized in that: The invention comprises a valve housing (100) and a buffer assembly, wherein a plurality of support plates (101) are arranged on the inner wall of one end of the valve housing (100), a same limiting ring (102) is arranged on one end of the support plate (101), a guide column (103) is arranged in the middle of the limiting ring (102), a valve core (104) is arranged at one end of the guide column (103), a conical spring (105) is arranged between one end of the valve core (104) and the limiting ring (102), a buffer assembly is arranged at the other end of the valve housing (100), the buffer assembly comprises a limiting frame (201) and an annular groove (202), a limiting frame (201) is arranged at the other end of the valve housing (100), an annular groove (202) is arranged in the middle of the limiting frame (201), and one end of the valve core (104) is arranged in the middle of the annular groove (202).
2. A wear-resistant check valve according to claim 1, characterized in that: The buffer assembly further comprises a buffer spring (203), and a plurality of buffer springs (203) are arranged between an inner wall on one side of the limit frame (201) and an outer wall on one side of the annular clamping groove (202).
3. A wear-resistant check valve according to claim 1, characterized in that: A plurality of guide rods (106) are arranged in the middle of the valve housing (100), and the middle portions of the guide rods (106) are all arranged in the middle portion of the valve core (104).
4. A wear-resistant check valve according to claim 3, characterized in that: A same limiting ring (107) is arranged in the middle of the guide rod (106).
5. A wear-resistant check valve according to claim 4, characterized in that: The inner wall of the limiting ring (107) is provided with a chamfer (108), and the angle of the chamfer (108) is consistent with the angle of the outer wall of the valve core (104).
6. The wear-resistant check valve according to claim 1, characterized in that: Flanges (109) are provided at both ends of the valve housing (100).
7. The wear-resistant check valve according to claim 1, characterized in that: The valve core (104) is conical, and the opening of the valve core (104) faces the water inlet of the valve housing (100).