Swing check valve with built-in slow closing structure
By designing a built-in slow-closing structure in the swivel check valve, the mutual coordination of the fixed block, connecting block, connecting ring seat, connecting ring and buffer spring, the problem that the existing swivel check valve cannot achieve slow-closing effect when closed is solved, and the effect of reducing the impact of valve disc closing and extending the service life.
Patent Information
- Application Number
- CN202420606126.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-03-27
AI Technical Summary
The existing swing check valve cannot achieve a slow closing effect when closed, resulting in a large collision between the valve disc and the valve seat inside the valve body when closed, affecting the service life of the valve disc.
A swing check valve with built-in slow-closing structure is designed. By setting up a fixed block, a connecting block, a connecting ring seat, a connecting ring and a buffer spring, the mutual coordination between them can achieve a slow-closing effect when the valve disc is closed and reduce collisions.
It realizes the slow closing effect when the swing check valve is closed, reduces the collision when the valve disc is closed, and extends the service life of the valve disc. At the same time, it is simple in structure, reasonable in design, and low in manufacturing cost, which is suitable for widespread promotion.
Smart Images
Figure CN222633908U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of swing check valves, in particular to a swing check valve with a built-in slow-closing structure. Background Art
[0002] The micro-stop valve is also called a non-return valve, and its function is to prevent the medium in the pipeline from flowing back. The valve that opens or closes automatically by the flow and force of the medium to prevent the medium from flowing back is called a check valve. The check valve belongs to the automatic valve category, which is mainly used in pipelines where the medium flows in one direction, and only allows the medium to flow in one direction to prevent accidents. The micro-stop valve is suitable for various pipelines with nominal pressure PN1.0MPa~42.0MPa, Class150-2500; nominal diameter DN15~1200mm, NPS1 / 2~48; working temperature -196~540℃, used to prevent the medium from flowing back. By selecting different materials, it can be applied to a variety of media such as water, steam, oil, nitric acid, acetic acid, strong oxidizing media and urea.
[0003] The existing swing check valve, when in use, cannot achieve a slow-closing effect when the swing check valve is closed, resulting in a large collision between the valve disc and the valve seat inside the valve body when the valve disc is closed, which is not conducive to extending the service life of the valve disc. Therefore, there is an urgent need for a swing check valve with a built-in slow-closing structure to solve the above technical problems. Utility Model Content
[0004] The purpose of the utility model is to provide a swing check valve with a built-in slow-closing structure to solve the problem that the existing swing check valve proposed in the above background technology cannot achieve a slow-closing effect when the swing check valve is closed, resulting in a large collision between the valve disc and the valve seat inside the valve body when the valve disc is closed, which is not conducive to extending the service life of the valve disc.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A swing check valve with a built-in slow-closing structure comprises a valve body, a left connecting flange is provided at the left end of the valve body, a right connecting flange is provided at the right end of the valve body, a valve cover is installed on the top of the valve body, a valve disc is provided inside the valve body, a fixing block is provided inside the valve body and located on the upper right side of the valve disc, a first connecting block is connected to the lower side of the fixing block, a first connecting ring seat is connected to the lower side of the first connecting block, a first connecting ring seat is buckled with a first connecting ring, a buffer spring is welded to the surface of the first connecting ring, the other end of the buffer spring is welded to the surface of the second connecting ring, a second connecting ring seat is connected to the upper right side of the valve disc, the second connecting ring is buckled with the second connecting ring seat, a second connecting block is connected to the bottom of the second connecting ring seat, one side of the second connecting block is connected to the valve disc, and a plurality of connecting holes are provided on the left connecting flange and the right connecting flange.
[0007] As a preferred technical solution of the present invention, the first connecting block and the second connecting block have the same structure and size.
[0008] As a preferred technical solution of the present invention, the first connecting ring seat and the second connecting ring seat have the same structure and size.
[0009] As a preferred technical solution of the present invention, the first connecting ring and the second connecting ring have the same structure and size.
[0010] As a preferred technical solution of the utility model, grooves are provided on opposite sides of the first connecting block and the second connecting block, and the first connecting ring seat and the second connecting ring seat are respectively arranged in the grooves on the first connecting block and the second connecting block.
[0011] As a preferred technical solution of the present invention, the fixing block is arranged obliquely.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] 1. The utility model sets a fixed block, a first connecting block, a first connecting ring seat, a first connecting ring, a buffer spring, a second connecting ring, a second connecting ring seat and a second connecting block, and utilizes the mutual cooperation between them, so that when the swing check valve is closed, a slow closing effect can be achieved, and the collision between the valve disc and the valve seat inside the valve body when the valve disc is closed is reduced, which is beneficial to prolonging the service life of the valve disc.
[0014] 2. The utility model has a simple structure, reasonable design, low manufacturing cost and is suitable for wide promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 It is a cross-sectional schematic diagram of the overall structure of the utility model;
[0018] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at A in the middle;
[0019] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure at point B in the middle.
[0020] In the figure: 1. valve body; 2. valve cover; 3. left connecting flange; 4. right connecting flange; 5. valve disc; 6. fixing block; 7. first connecting block; 8. first connecting ring seat; 9. first connecting ring; 10. buffer spring; 11. second connecting ring; 12. second connecting ring seat; 13. second connecting block; 14. connecting hole. DETAILED DESCRIPTION
[0021] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. The different types of section lines in the drawings in the embodiments of the utility model are not marked according to the national standard, nor are there any requirements for the materials of the components, but are used to distinguish the cross-sectional views of the components in the drawings.
[0022] See also Figure 1-4A swing check valve with a built-in slow-closing structure comprises a valve body 1, a left connecting flange 3 is arranged at the left end of the valve body 1, a right connecting flange 4 is arranged at the right end of the valve body 1, a valve cover 2 is installed on the top of the valve body 1, a valve disc 5 is arranged inside the valve body 1, a fixing block 6 is arranged inside the valve body 1 and located on the upper right of the valve disc 5, a first connecting block 7 is connected to the lower side of the fixing block 6, a first connecting ring seat 8 is connected to the lower side of the first connecting block 7, a first connecting ring 9 is buckled in the first connecting ring seat 8, a buffer spring 10 is welded on the surface of the first connecting ring 9, and the other end of the buffer spring 10 is connected to the first The surfaces of the two connecting rings 11 are welded, and a second connecting ring seat 12 is connected to the upper right side of the valve disc 5. The second connecting ring 11 is buckled with the second connecting ring seat 12, and a second connecting block 13 is connected to the bottom of the second connecting ring seat 12. One side of the second connecting block 13 is connected to the valve disc 5. By utilizing the mutual cooperation between them, a slow closing effect can be achieved when the swing check valve is closed, which reduces the collision between the valve disc 5 and the valve seat inside the valve body 1 when it is closed, which is beneficial to extend the service life of the valve disc. A plurality of connecting holes 14 are provided on the left connecting flange 3 and the right connecting flange 4.
[0023] The first connecting block 7 and the second connecting block 13 have the same structure and size.
[0024] The first connecting ring seat 8 and the second connecting ring seat 12 have the same structure and size.
[0025] The first connecting ring 9 and the second connecting ring 11 have the same structure and size.
[0026] The first connecting block 7 and the second connecting block 13 have grooves on their opposite sides, and the first connecting ring seat 8 and the second connecting ring seat 12 are respectively arranged in the grooves on the first connecting block 7 and the second connecting block 13 .
[0027] Among them, the fixing block 6 is arranged tilted.
[0028] The working principle and use process of the utility model are as follows: first, the medium enters the valve body 1 from the left connecting flange 3, and the valve flap 5 rotates to open at this time. When the medium is slowly transported away, the valve flap 5 slowly closes automatically. During the automatic closing process of the valve flap 5, the buffer spring 10 will be stretched under the drive of the valve flap 5 until the valve flap 5 closes to the left. During the closing action, the buffer spring 10 is stretched by the force. According to the principle of action and reaction force, the buffer spring 10 has the effect of slowly closing the valve flap 5, reducing the collision between the valve flap 5 and the valve seat inside the valve body 1 when the valve flap 5 is closed, which is beneficial to extending the service life of the valve flap. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
[0029] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.
Claims
1. A swing check valve with a built-in slow-closing structure, comprising a valve body (1), characterized in that: The left end of the valve body (1) is provided with a left connecting flange (3), the right end of the valve body (1) is provided with a right connecting flange (4), the top of the valve body (1) is provided with a valve cover (2), the interior of the valve body (1) is provided with a valve flap (5), the interior of the valve body (1) and a fixing block (6) is provided at the upper right of the valve flap (5), the lower side of the fixing block (6) is connected to a first connecting block (7), the lower side of the first connecting block (7) is connected to a first connecting ring seat (8), the first connecting ring seat (8) is buckled with a first connecting ring (9), the A buffer spring (10) is welded to the surface of the first connecting ring (9), and the other end of the buffer spring (10) is welded to the surface of the second connecting ring (11). The upper right side of the valve flap (5) is connected to a second connecting ring seat (12), and the second connecting ring (11) is buckled with the second connecting ring seat (12). The bottom of the second connecting ring seat (12) is connected to a second connecting block (13), and one side of the second connecting block (13) is connected to the valve flap (5). A plurality of connecting holes (14) are provided on the left connecting flange (3) and the right connecting flange (4).
2. A swing check valve with a built-in slow-closing structure according to claim 1, characterized in that: The first connecting block (7) and the second connecting block (13) have the same structure and size.
3. A swing check valve with a built-in slow-closing structure according to claim 1, characterized in that: The first connecting ring seat (8) and the second connecting ring seat (12) have the same structure and size.
4. A swing check valve with a built-in slow-closing structure according to claim 1, characterized in that: The first connecting ring (9) and the second connecting ring (11) have the same structure and size.
5. The swing check valve with a built-in slow-closing structure according to claim 1, characterized in that: The opposite sides of the first connecting block (7) and the second connecting block (13) are provided with grooves, and the first connecting ring seat (8) and the second connecting ring seat (12) are respectively arranged in the grooves on the first connecting block (7) and the second connecting block (13).
6. A swing check valve with a built-in slow-closing structure according to claim 1, characterized in that: The fixing block (6) is arranged in an inclined manner.