A leak-proof check valve

Abstract

The utility model relates to a kind of anti-leakage check valve, including valve body, check structure and guiding buffer assembly, guiding buffer assembly includes the guiding block of being installed in the both sides of check structure and the buffer structure of being installed in the top of water inlet pipe, guiding groove is opened on the inner wall of check pipe, guiding block is slid along guiding groove, ensure that the movement of valve clack always remains on correct track, avoid deviation, to ensure the accurate alignment between sealing layer and the through-hole of water outlet pipe, the reset action of valve clack is decelerated by buffer plate under the action of buffer spring, reduce the impact intensity of the sealing layer of valve clack bottom and the edge of through-hole, effectively reduce the degree of wear, extend the service life of device, the sliding of guiding column in buffer groove further enhances the buffering effect, ensure that the whole process is stable and reliable, not only improve the sealing performance of check valve, prevent leakage, also significantly enhance its practicality and durability.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, and in particular to a leak-proof check valve. Background Technology

[0002] A check valve, also known as a one-way valve or non-return valve, is an automatically operating valve. Its core function is to allow fluid (liquid or gas) to flow in only one direction and automatically prevent reverse flow. It opens and closes automatically by utilizing the fluid's own kinetic energy, without requiring any external operation.

[0003] A search revealed a spring-loaded check valve with publication number CN211288867U, characterized by a valve body, a baffle, a spring, a support rod, and a fixing plate. The valve body has an inlet and an outlet; both the inlet and outlet have mounting steps; a fixing plate is mounted on the mounting steps; a spring is installed between the fixing plate and the baffle; and a sealing ring is mounted on the baffle. This invention has a simple structure, is easy to use, provides better sealing performance, and effectively prevents fluid backflow.

[0004] The device in this patent cannot guide the movement of the valve disc during use, which can easily cause the valve disc to deviate from the through hole, affecting the sealing performance. Furthermore, it cannot buffer the valve disc reset process, causing the sealing layer at the bottom of the valve disc to repeatedly impact the edge of the through hole, resulting in significant wear, affecting the sealing performance, and causing leakage. Therefore, it has low practicality. Utility Model Content

[0005] In response to the technical problems in existing patents, such as the inability to guide the movement of the valve disc during use, which easily leads to the valve disc misalignment with the through hole, affecting the sealing performance, and the inability to buffer the valve disc reset process, causing the sealing layer at the bottom of the valve disc to repeatedly impact the edge of the through hole, resulting in high wear, affecting the sealing performance, and causing leakage, this utility model provides a leak-proof check valve.

[0006] The technical solution adopted in this utility model is: a leak-proof check valve, comprising:

[0007] The valve body includes an inlet pipe, a check pipe installed at the top of the inlet pipe, and an outlet pipe installed at the top of the check pipe.

[0008] A check valve structure, wherein the check valve structure is installed inside the check pipe;

[0009] A guide buffer assembly is installed on the check valve structure and the inlet pipe, and the guide buffer assembly is used to guide and buffer the check valve structure.

[0010] The guide buffer assembly includes guide blocks installed on both sides of the check structure and a buffer structure installed on the top of the inlet pipe.

[0011] Furthermore, the check valve structure includes a valve disc fused to the bottom of the outlet pipe by a return spring and a sealing layer installed at the bottom of the valve disc.

[0012] Furthermore, a guide groove is provided on the inner wall of the check pipe, and the guide block is fixedly welded to both sides of the valve disc, and the guide block is slidably connected inside the guide groove.

[0013] Furthermore, a buffer groove is provided at the top of the water inlet pipe. The buffer structure includes a buffer plate fused to the top of the water inlet pipe by a buffer spring and a guide post fixedly welded to the bottom of the buffer plate. The guide post is slidably connected inside the buffer groove.

[0014] The beneficial effects of this utility model are:

[0015] By sliding the guide block along the guide groove, the movement of the valve disc is ensured to always remain on the correct trajectory, avoiding deviation and thus ensuring precise alignment between the sealing layer and the outlet pipe through hole. The buffer plate, under the action of the buffer spring, slows down the reset action of the valve disc, reducing the impact force between the bottom sealing layer of the valve disc and the edge of the through hole, effectively reducing wear and extending the service life of the device. The sliding of the guide column in the buffer groove further enhances the buffering effect, ensuring that the whole process is smooth and reliable. This not only improves the sealing performance of the check valve and prevents leakage, but also significantly enhances its practicality and durability. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a cross-sectional three-dimensional structural schematic diagram of the present invention;

[0018] Figure 3 This is a three-dimensional structural diagram of the anti-return structure and the guide buffer assembly of this utility model;

[0019] Figure 4 This is a utility model Figure 2 A magnified three-dimensional structural diagram at point A in the diagram.

[0020] The diagram is marked as follows:

[0021] 1. Valve body; 101. Inlet pipe; 102. Check pipe; 103. Outlet pipe;

[0022] 2. Check valve structure; 201. Return spring; 202. Valve disc; 203. Sealing layer;

[0023] 3. Guide and buffer assembly; 301. Guide block; 302. Buffer structure; 3021. Buffer spring; 3022. Buffer plate; 3023. Guide post;

[0024] 4. Guide groove. Detailed Implementation

[0025] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described below.

[0028] To address the problems existing in the background art, this application proposes the following technical solution:

[0029] A leak-proof check valve includes: a valve body 1, a check structure 2, and a guide buffer assembly 3;

[0030] The valve body 1 includes an inlet pipe 101, a check pipe 102 installed at the top of the inlet pipe 101, and an outlet pipe 103 installed at the top of the check pipe 102.

[0031] Check structure 2 is installed inside check pipe 102;

[0032] The check valve structure 2 includes a valve disc 202 fused to the bottom of the outlet pipe 103 by a return spring 201 and a sealing layer 203 installed at the bottom of the valve disc 202.

[0033] like Figure 1-4 As shown, the guide buffer assembly 3 is installed on the check structure 2 and the water inlet pipe 101. The guide buffer assembly 3 is used to guide and buffer the check structure 2.

[0034] The guide buffer assembly 3 includes guide blocks 301 installed on both sides of the check structure 2 and a buffer structure 302 installed on the top of the water inlet pipe 101. A guide groove 4 is provided on the inner wall of the check pipe 102. The guide blocks 301 are fixedly welded to both sides of the valve disc 202 and are slidably connected inside the guide groove 4.

[0035] Furthermore, a buffer groove is provided at the top of the water inlet pipe 101, and the buffer structure 302 includes a buffer plate 3022 fused to the top of the water inlet pipe 101 by a buffer spring 3021 and a guide post 3023 fixedly welded to the bottom of the buffer plate 3022. The guide post 3023 is slidably connected inside the buffer groove.

[0036] Working principle: During use, when fluid enters from the inlet pipe 101, the fluid pressure pushes the valve disc 202 upward, compressing the return spring 201, allowing the fluid to flow through the check pipe 102 and out of the outlet pipe 103. During this process, the guide block 301 slides along the guide groove 4, ensuring that the movement of the valve disc 202 always stays on the correct trajectory, avoiding deviation, thereby ensuring precise alignment between the sealing layer 203 and the through hole of the outlet pipe 103. When the fluid stops flowing or backflow occurs, the return spring 201 releases the stored energy, pushing the valve disc 202 downward, thus sealing the bottom. Layer 203 fits tightly against the through hole of the outlet pipe 103 to achieve a leak-proof effect. At the same time, the buffer structure 302 begins to function. The buffer plate 3022, under the action of the buffer spring 3021, slows down the reset action of the valve disc 202, reducing the impact force between the bottom sealing layer 203 of the valve disc 202 and the edge of the through hole, effectively reducing wear and extending the service life of the device. In addition, the sliding of the guide column 3023 in the buffer groove further enhances the buffering effect, ensuring that the whole process is smooth and reliable. This design not only improves the sealing performance of the check valve, but also significantly enhances its practicality and durability.

[0037] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0038] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. A leak-proof check valve, characterized in that, include: Valve body (1), the valve body (1) includes an inlet pipe (101), a check pipe (102) installed on the top of the inlet pipe (101) and an outlet pipe (103) installed on the top of the check pipe (102). Check structure (2), the check structure (2) is installed inside the check pipe (102); A guide buffer assembly (3) is installed on the check structure (2) and the inlet pipe (101). The guide buffer assembly (3) is used to guide and buffer the check structure (2). The guide buffer assembly (3) includes guide blocks (301) installed on both sides of the check structure (2) and a buffer structure (302) installed on the top of the water inlet pipe (101).

2. The anti-leakage check valve according to claim 1, characterized in that, The check valve structure (2) includes a valve disc (202) fused to the bottom of the outlet pipe (103) by a return spring (201) and a sealing layer (203) installed at the bottom of the valve disc (202).

3. The anti-leakage check valve according to claim 2, characterized in that, The inner wall of the check pipe (102) is provided with a guide groove (4), the guide block (301) is fixedly welded to both sides of the valve disc (202), and the guide block (301) is slidably connected inside the guide groove (4).

4. A leak-proof check valve according to claim 3, characterized in that, The top of the water inlet pipe (101) is provided with a buffer groove. The buffer structure (302) includes a buffer plate (3022) fused to the top of the water inlet pipe (101) by a buffer spring (3021) and a guide post (3023) fixedly welded to the bottom of the buffer plate (3022). The guide post (3023) is slidably connected inside the buffer groove.

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