Hoop check valve

Abstract

The utility model discloses a clamp check valve which comprises a valve body, a flow hole formed in the valve body, an installation frame, a valve clack arranged on the installation frame in a sliding mode, a plurality of through holes formed in the installation frame and a driving spring and further comprises an assembly limiting assembly, an external assembly groove is formed in the wall of the flow hole, and an internal assembly groove is formed in the installation frame. When the installation frame is coaxially installed in the flow hole, the external assembling groove and the internal assembling groove are arranged in a right corresponding and communicated mode, and the assembling limiting assembly is matched with the external assembling groove and the internal assembling groove to fix the installation frame in the flow hole. The utility model has the following advantages and effects: the utility model is simpler and more convenient to process, so that the processing cost of the product is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve, in particular to a clamp check valve. BACKGROUND

[0002] Check valve is the valve that is used to prevent medium backflow, and is also called non-return valve, one-way valve, backflow valve and back pressure valve. Check valve is a kind of automatic valve, and its main function is to prevent medium backflow, prevent pump and driving motor reverse rotation, and release container medium.

[0003] The existing clamp check valve includes a valve body, a mounting bracket integrally installed on the valve body, a valve disc slidably arranged on the mounting bracket and cooperating with the valve body to form a seal, a driving spring for driving the valve disc and the valve body to form a seal, and a plurality of through holes arranged on the mounting bracket and allowing fluid medium to pass through. The mounting bracket and the valve body are integrally formed, which needs to be completed in the casting stage, and the structure of the mounting bracket undoubtedly increases the complexity of the mold of the valve body in the casting stage, resulting in an increase in the processing difficulty. The through holes on the mounting bracket and the sliding hole structure for the valve disc to slide are interfered by the operation space and the fixed position of the valve body, which causes inconvenience in the later turning process, thereby increasing the difficulty of the later turning process. Therefore, the improvement is born according to the above problems. SUMMARY

[0004] The utility model discloses a clamp check valve, which is more convenient to process, thereby reducing the processing cost of the product.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a clamp check valve, comprising a valve body, a flow hole formed in the valve body, a mounting bracket, a valve disc slidably arranged on the mounting bracket, a plurality of through holes formed in the mounting bracket and a driving spring, further comprising an assembly limiting component, the flow hole wall is provided with an external assembly groove, the mounting bracket is provided with an internal assembly groove, when the mounting bracket is coaxially installed on the flow hole, the external assembly groove and the internal assembly groove are oppositely arranged and communicated, and the assembly limiting component cooperates with the external assembly groove and the internal assembly groove to fix the mounting bracket on the flow hole.

[0006] By adopting the technical scheme, the valve body and the mounting frame are arranged in a split structure, separate machining of the valve body and the mounting frame is realized, and only external assembly grooves are machined on the valve body and internal assembly grooves are machined on the mounting frame in the later turning process, so that the mounting frame and the valve body are assembled and fixed by cooperating with the assembly limiting component, thereby reducing the complexity of the mold, reducing the operation inconvenience in the later turning process caused by the valve body interference, and making the clamp check valve machining more convenient, so as to reduce the processing cost of the product.

[0007] Further arrangement is that the assembly limiting component is arranged in the internal assembly groove and has an assembly installation state of entering the flow hole with the mounting frame and a limiting and fixing state of cooperating with the external assembly groove.

[0008] By adopting the technical scheme, the assembly limiting component does not affect the normal assembly operation of the mounting frame, and can play a good limiting and fixing role on the mounting frame.

[0009] Further arrangement is that the external assembly groove and the internal assembly groove are arranged at least two around the center of the flow hole, the assembly limiting component includes a limiting block slidingly installed in the internal assembly groove and a driving piece driving the limiting block to move towards the opening side of the internal assembly groove, and when the limiting block is inserted into the external assembly groove, the limiting block is simultaneously located in the internal assembly groove and the external assembly groove.

[0010] By adopting the technical scheme, the limiting block and the driving piece are installed in the internal assembly groove, and when the internal assembly groove moves to the position corresponding to the external assembly groove, the limiting block is driven to insert into the external assembly groove under the action of the driving piece and is simultaneously located in the external assembly groove and the internal assembly groove, so as to limit and fix the mounting frame. This arrangement has the advantages of simple structure, convenient machining and lower production cost.

[0011] Further arrangement is that the driving piece is an arc-shaped elastic metal strip.

[0012] By adopting the technical scheme, the driving piece of the elastic metal strip has low processing cost, long service life and is more suitable for the installation position of the assembly groove.

[0013] Further arrangement is that the valve body is provided with a abutting component cooperating with a to-be-assembled pipeline for limiting the axial movement of the mounting frame along the flow hole.

[0014] By adopting the technical scheme, since the assembly limiting component forms an assembly gap in the axial direction of the flow hole after completing the assembly and fixation of the mounting frame, the abutting component is arranged to compensate for the formed assembly gap, so as to realize the stable installation of the mounting frame and better ensure the sealing stability of the product.

[0015] Further setting is that the abutting assembly comprises an abutting cylinder arranged in the flow hole and extending from one end of the mounting frame to the other end of the mounting frame, and a pressing ring fixedly arranged at one end of the abutting cylinder away from the mounting frame, and the orthographic projection of the pressing ring along the flow hole axis direction corresponds to the valve body end face.

[0016] By adopting the above technical scheme, when the valve body end face is fixedly connected with the pipeline, the pressing ring is pressed by the pipeline end face, and then the abutting cylinder is driven to abut against one side of the mounting frame to limit the movement of the mounting frame along the flow hole axis direction, so that the mounting frame is stably installed.

[0017] Further setting is that the valve body end face corresponds to the position of the pressing ring and is provided with an embedding groove for embedding the pressing ring, and the pressing ring is arranged protruding from the embedding groove.

[0018] By adopting the above technical scheme, the embedding groove is arranged to reduce the large assembly gap between the valve body and the pipeline caused by the existence of the pressing ring, so as to ensure the normal butt joint installation between the valve body and the pipeline.

[0019] In summary, the utility model has the following beneficial effects: the utility model is more convenient to process, so as to reduce the processing cost of products. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure schematic view of an embodiment;

[0021] Figure 2 It is Figure 1 It is an enlarged view of A part in the middle;

[0022] Figure 3 It is a local connection schematic view of an embodiment.

[0023] In the figure: 1, valve body; 2, flow hole; 3, mounting frame; 4, valve flap; 5, through hole; 6, driving spring; 7, external assembly groove; 8, internal assembly groove; 91, limiting block; 92, driving piece; 10, abutting cylinder; 11, pressing ring; 12, embedding groove. DETAILED DESCRIPTION

[0024] The utility model will be further described in detail below in combination with the drawings.

[0025] Reference Figures 1 to 3The application relates to a clamp check valve, which comprises a valve body 1, a flow hole 2 formed in the valve body 1, a mounting frame 3, a valve disc 4 slidingly arranged in the mounting frame 3, a plurality of through holes 5 formed in the mounting frame 3 and a driving spring 6.

[0026] The assembly limiting component is arranged in the inner assembly groove 8 and has an assembly installation state of entering the flow hole 2 along with the mounting frame 3 and a limiting fixing state of cooperating with the outer assembly groove 7. The outer assembly groove 7 and the inner assembly groove 8 are arranged around the center of the flow hole 2 in at least two. The assembly limiting component comprises a limiting block 91 slidingly arranged in the inner assembly groove 8 and a driving member 92 driving the limiting block 91 to move towards the opening side of the inner assembly groove 8. When the limiting block 91 is inserted into the outer assembly groove 7, the limiting block 91 is synchronously located in the inner assembly groove 8 and the outer assembly groove 7. The driving member 92 is an arc-shaped elastic metal strip.

[0027] The valve body 1 is provided with a abutting assembly matched with a pipeline to be assembled and used for limiting the axial movement of the mounting frame 3 along the flow hole 2. The abutting assembly comprises an abutting cylinder 10 arranged in the flow hole 2 and extending from one end to the mounting frame 3 and from the other end away from the mounting frame 3, and a pressing ring 11 integrally arranged at one end of the abutting cylinder 10 away from the mounting frame 3. The projection of the pressing ring 11 along the axis of the flow hole 2 corresponds to the end surface of the valve body 1, the end surface of the valve body 1 is provided with an embedding groove 12 for embedding the pressing ring 11 at the position corresponding to the pressing ring 11, the thickness of the pressing ring 11 is greater than the depth of the embedding groove 12, and the outer wall of the abutting cylinder 10 is in abutting sliding contact with the wall of the flow hole 2.

[0028] The embodiment is only an explanation of the application, and is not a limitation of the application. Those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, and the application is protected by the patent law as long as the modifications are within the scope of the claims.

Claims

1. A clamp check valve, comprising a valve body (1), a flow hole (2) formed in the valve body (1), a mounting bracket (3), a valve disc (4) slidably disposed in the mounting bracket (3), a plurality of through holes (5) formed in the mounting bracket (3), and a drive spring (6), characterized in that: It also includes an assembly limiting component. The flow hole (2) wall is provided with an external assembly groove (7) and the mounting bracket (3) is provided with an internal assembly groove (8). When the mounting bracket (3) is coaxially installed on the flow hole (2), the external assembly groove (7) and the internal assembly groove (8) are directly corresponding and connected. The assembly limiting component works with the external assembly groove (7) and the internal assembly groove (8) to fix the mounting bracket (3) on the flow hole (2).

2. The clamp check valve according to claim 1, characterized in that: The assembly limiting component is set in the internal assembly groove (8) and has an assembly and installation state that enters the flow hole (2) with the mounting bracket (3) and a limiting and fixing state that cooperates with the external assembly groove (7).

3. The clamp check valve according to claim 1 or 2, characterized in that: Both the external assembly slot (7) and the internal assembly slot (8) are arranged around the center of the flow hole (2) with at least two of them. The assembly limiting component includes a limiting block (91) that is slidably installed in the internal assembly slot (8) and a driving member (92) that drives the limiting block (91) to move toward the opening side of the internal assembly slot (8). When the limiting block (91) is inserted into the external assembly slot (7), the limiting block (91) is simultaneously located in the internal assembly slot (8) and the external assembly slot (7).

4. The clamp check valve according to claim 3, characterized in that: The driving component (92) is an arc-shaped elastic metal strip.

5. The clamp check valve according to claim 1, characterized in that: The valve body (1) is provided with a clamping component that works with the pipeline to be installed to restrict the axial movement of the mounting bracket (3) along the flow hole (2).

6. The clamp check valve according to claim 5, characterized in that: The clamping assembly includes a clamping cylinder (10) disposed on the flow hole (2) and extending from the mounting bracket (3) at one end and the mounting bracket (3) at the other end, and a compression ring (11) fixedly disposed on one end of the mounting bracket (3) at the opposite end of the clamping cylinder (10). The orthographic projection of the compression ring (11) along the axis of the flow hole (2) corresponds to the end face of the valve body (1).

7. The clamp check valve according to claim 6, characterized in that: The valve body (1) has a groove (12) on its end face corresponding to the position of the extrusion ring (11) for the extrusion ring (11) to be inserted, and the extrusion ring (11) protrudes out of the groove (12).

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