Anti-pulse axial-flow type check valve
By designing an anti-pulse axial flow check valve, and using a buffer assembly and a main spring to control the valve disc closing speed, the problem of check valve damage caused by frequent impacts is solved, achieving a protective effect in pulse environments.
Patent Information
- Application Number
- CN202520845545.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-30
AI Technical Summary
In the pulse pump circuit, the check valve is damaged due to the frequent opening and closing of the valve body sealing surface and the valve disc impacting each other.
An anti-pulse axial flow check valve was designed, comprising a valve body, valve disc, bracket, guide rod, main spring, and buffer assembly. The buffer assembly reduces the impact between the valve disc and the valve body sealing surface, and the main spring and backflow medium provide resistance to control the valve disc closing speed.
It effectively reduces the impact between the valve disc and the valve body sealing surface, protects the valve body sealing surface, is suitable for pulse environment conditions, and has a relatively low cost.
Smart Images
Figure CN223938759U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of check valve technology, specifically to an anti-pulse axial flow check valve. Background Technology
[0002] The biggest challenge encountered in the pulse pump circuit is that, since the power source at the front end of the pipeline is a pulse pump, the delivery of the pipeline medium will have a pulse phenomenon with the same frequency as the pulse pump. Since a check valve is installed at the outlet of the pulse pump to protect the pulse pump, the check valve will open and close continuously with the pulse phenomenon. Especially when the valve body is closed, an impact phenomenon will occur between the valve body sealing surface and the valve disc. Frequent impacts will cause serious damage to the valve body and pipeline. Utility Model Content
[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide an anti-pulse axial flow check valve that can reduce the impact between valve sealing surfaces and is suitable for use in pulsed environments.
[0004] To achieve the above objectives, this utility model provides the following technical solution: an anti-pulse axial flow check valve, comprising a valve body and a valve disc, wherein the valve body has an internal limiting platform, and further comprising...
[0005] A bracket is disposed in the valve body and fixedly connected to the inner wall of the valve body. A guide hole extending laterally inward is opened on the front end face of the bracket.
[0006] A guide rod is disposed within the guide hole and slides in contact with the inner wall of the guide hole; the guide rod is fixedly connected to the valve disc.
[0007] A main spring that causes the valve disc to tend to approach the valve body sealing surface;
[0008] A buffer assembly is provided to mitigate the impact between the valve disc and the valve body sealing surface.
[0009] Furthermore, the valve disc has an inwardly extending receiving hole on its front end face. The buffer assembly includes a spring seat and a secondary spring. The spring seat is disposed in the receiving hole and slides in contact with the inner wall of the receiving hole. The first end of the secondary spring is fixedly connected to the inner wall of the receiving hole, and the second end of the secondary spring is fixedly connected to the spring seat.
[0010] Furthermore, a shock-absorbing pad is fixedly installed on the front end face of the spring seat.
[0011] Furthermore, the main spring is sleeved on the guide rod.
[0012] Furthermore, a baffle is fixedly installed on the front end face of the valve disc, the baffle being used to prevent the spring seat from disengaging from the receiving hole.
[0013] The beneficial effects of this utility model are as follows: This utility model provides an anti-pulse axial flow check valve. Under the action of the backflow medium and the main spring, the valve disc continues to move towards the valve body sealing surface. At this time, the buffer assembly provides some resistance, thereby slowing down the closing speed of the valve disc and reducing the impact between the valve disc and the valve body sealing surface, thus protecting the valve body sealing surface. It is suitable for use in pulse environment conditions. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model.
[0015] Reference numerals: 10-valve body, 20-limiting platform, 30-valve disc, 40-bracket, 41-guide hole, 50-guide rod, 60-main spring, 70-buffer assembly, 71-spring seat, 72-secondary spring, 73-shock absorber pad, 74-baffle. Detailed Implementation
[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0017] In this application, unless otherwise expressly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to 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.
[0018] In the description of this application, it should be understood that the terms "longitudinal", "horizontal", "level", "top", "bottom", "upper", "lower", "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0019] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.
[0020] like Figure 1 As shown, this utility model provides an anti-pulse axial flow check valve, including a valve body 10 and a valve disc 30. The valve body 10 has a limiting platform 20 inside, and also includes a bracket 40, a guide rod 50, a main spring 60 and a buffer assembly 70.
[0021] The bracket 40 is disposed inside the valve body 10 and is fixedly connected to the inner wall of the valve body 10. A guide hole 41 extending inward in the transverse direction is opened on the front end face of the bracket 40.
[0022] The guide rod 50 is disposed inside the guide hole 41 and slides in contact with the inner wall of the guide hole 41. The guide rod 50 is fixedly connected to the valve disc 30.
[0023] The first end of the main spring 60 is fixedly connected to the inner wall of the valve body 10, and the second end of the main spring 60 is fixedly connected to the valve disc 30. The main spring 60 causes the valve disc 30 to tend to approach the sealing surface of the valve body 10.
[0024] The buffer assembly 70 is used to mitigate the impact between the valve disc 30 and the sealing surface of the valve body 10.
[0025] During operation, as the valve disc 30 is about to close completely, it continues to move towards the sealing surface of the valve body 10 under the action of the return medium and the main spring 60. At this time, the buffer assembly 70 provides some resistance, thereby slowing down the closing speed of the valve disc 30 and reducing the impact between the valve disc 30 and the sealing surface of the valve body 10, thus protecting the sealing surface of the valve body 10. This invention can reduce the impact between the sealing surface of the valve body 10 and the valve disc 30 without significantly increasing costs, making it suitable for use in pulsed environments.
[0026] In one embodiment, the valve disc 30 has an inwardly extending receiving hole on its front end face. The buffer assembly 70 includes a spring seat 71 and a secondary spring 72. The spring seat 71 is disposed within the receiving hole and slides in contact with the inner wall of the receiving hole. The first end of the secondary spring 72 is fixedly connected to the inner wall of the receiving hole, and the second end of the secondary spring 72 is fixedly connected to the spring seat 71.
[0027] As the valve disc 30 is about to close completely, under the action of the return medium and the main spring 60, the valve disc 30 continues to move toward the sealing surface of the valve body 10. The limiting platform 20 inside the valve body 10 will compress the auxiliary spring 72, which provides some resistance, thereby slowing down the closing speed of the valve disc 30.
[0028] In one embodiment, a shock-absorbing pad 73 is fixedly installed on the front end face of the spring seat 71 to further reduce the impact force on the spring seat 71.
[0029] In one embodiment, the main spring 60 is sleeved on the guide rod 50 to prevent the main spring 60 from bending excessively and to improve the stability of the present invention.
[0030] In one embodiment, a baffle 74 is provided on the front end face of the valve disc 30. The baffle 74 is fixedly connected to the valve disc 30 by bolts. The baffle 74 serves to block and prevent the spring seat 71 from detaching from the receiving hole.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.
[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An anti-pulse axial flow check valve, comprising a valve body and a valve disc, wherein the valve body has a limiting platform inside, characterized in that: Also includes A bracket is disposed in the valve body and fixedly connected to the inner wall of the valve body. A guide hole extending laterally inward is opened on the front end face of the bracket. A guide rod is disposed within the guide hole and slides in contact with the inner wall of the guide hole; the guide rod is fixedly connected to the valve disc. A main spring that causes the valve disc to tend to approach the valve body sealing surface; A buffer assembly is provided to mitigate the impact between the valve disc and the valve body sealing surface.
2. The anti-pulse axial flow check valve according to claim 1, characterized in that: The valve disc has an inwardly extending receiving hole on its front end face. The buffer assembly includes a spring seat and a secondary spring. The spring seat is disposed in the receiving hole and slides in contact with the inner wall of the receiving hole. The first end of the secondary spring is fixedly connected to the inner wall of the receiving hole, and the second end of the secondary spring is fixedly connected to the spring seat.
3. The anti-pulse axial flow check valve according to claim 2, characterized in that: A shock-absorbing pad is fixedly installed on the front end surface of the spring seat.
4. The anti-pulse axial flow check valve according to claim 1, characterized in that: The main spring is sleeved on the guide rod.
5. The anti-pulse axial flow check valve according to claim 2, characterized in that: A baffle is fixedly installed on the front end face of the valve disc, and the baffle is used to prevent the spring seat from detaching from the receiving hole.