A swing check valve with a rocker arm that is easy to replace

Abstract

The utility model provides a kind of swing-type check valve convenient to replace rocker arm, including valve body, the top of valve body is equipped with valve cover connecting flange, and the valve cover connecting flange is detachably fixedly connected with valve cover body by a plurality of bolts and a plurality of nuts, and the valve body is equipped with mounting portion, and the inside position of valve body is opened with installation groove on mounting portion, and one group of fixed plate is equipped in installation groove, and the first semicircular groove is opened in one group of fixed plate, and one group of abutting plate is fixedly connected with the inside position of valve body in the bottom of valve cover body.The utility model is equipped with one group of fixed plate in installation groove and is equipped with one group of abutting plate on valve cover body, and first semicircular groove on fixed plate and second semicircular groove on abutting plate constitute mounting hole, when replacing rocker arm, only need to remove valve cover body to replace shaft, on the one hand, the replacement of rocker arm is more convenient, on the other hand, without opening perforation on valve body, prevent the risk of fluid leakage from perforation.

Description

Technical Field

[0001] This utility model relates to a swing check valve with an easy-to-replace rocker arm, belonging to the field of check valve technology. Background Technology

[0002] A check valve, also known as a non-return valve or one-way valve, is an automatically actuating valve used to ensure that the medium in a pipeline flows in only one direction, preventing backflow. These valves are very common in liquid or gas transport systems, especially in situations where backflow is possible, such as water treatment plants, oil and gas pipelines, and hot water circulation systems. The basic working principle of a check valve is that the force of the fluid flowing through the valve opens it, and when the fluid attempts to flow in the opposite direction, the valve closes, preventing backflow.

[0003] In the prior art, the utility model patent with authorization announcement number CN221463011U proposes a swing check valve, including a valve body. A valve cover is installed at the upper end of the valve body. A rocker arm can drive a valve disc installed at the lower end to open or close. This device has a limit post installed at the lower end of the valve cover. When fluid opens the valve disc, the valve disc is pushed, and the rocker arm connected to it drives the valve disc to open or close. In order to control the opening limit of the valve disc and prevent it from hitting the inner wall of the valve body, the device is equipped with a limit post at the lower end of the valve cover. The function of this limit post is to limit the movement range of the valve disc by contacting it with the rocker arm when the valve disc reaches the maximum opening height. This avoids the impact damage that the valve disc may cause to the valve body. Over time, the rocker arm may wear out due to repeated impacts with the limit post. When the rocker arm wears out, only the rocker arm needs to be replaced, without replacing the entire valve body, thus reducing maintenance costs.

[0004] However, in the aforementioned patent, the rocker arm is fixed by creating a set of through holes in the valve body, using bolts and threaded connections between the bolts and the through holes to clamp and fix the rotating shaft inside the valve body, and then inserting the rocker arm onto the rotating shaft. On the one hand, creating through holes in the valve body to clamp the rotating shaft can easily cause fluid leakage; on the other hand, disassembling the rocker arm requires first removing the bolts clamping the rotating shaft, and then pressing the rotating shaft against the through holes to perform maintenance and replacement, which is quite cumbersome. Therefore, this utility model proposes a swing check valve that facilitates rocker arm replacement. Utility Model Content

[0005] Based on the above background, the purpose of this utility model is to provide a swing check valve with an easy-to-replace rocker arm, thereby solving the problems in the background art.

[0006] This utility model provides the following technical solution:

[0007] A swing check valve with an easily replaceable rocker arm includes a valve body. A valve cover connecting flange is located at the top of the valve body. A valve cover body is detachably and fixedly connected to the valve cover connecting flange via bolts and nuts. The valve body has a mounting portion with a mounting groove inside the valve body. A set of fixing plates is located within the mounting groove. Each fixing plate has a first semi-circular groove. A set of abutment plates is fixedly connected to the bottom of the valve cover body at a position within the valve body. Each abutment plate has a second semi-circular groove. When the valve cover body flange is connected to the valve cover connecting flange, the abutment plates abut against the adjacent ends of the fixing plates. The first and second semi-circular grooves form a mounting hole. A rotating shaft is rotatably connected within the mounting hole. A rocker arm passes through the rotating shaft, and both sides of the rocker arm are in contact with the adjacent surfaces of the fixing plates and the abutment plates.

[0008] Preferably, the rocker arm is detachably and fixedly connected to the end that passes through the rotating shaft by bolts and nuts.

[0009] Preferably, the valve cover connecting flange has an annular sealing groove at the top inner ring position, and an annular sealing gasket is provided in the annular sealing groove.

[0010] Preferably, both ends of the valve body are provided with connecting pipes, which penetrate the interior of the valve body. An annular valve seat groove is provided inside the valve body near the mounting groove, and the valve seat body is provided in the valve seat groove.

[0011] Preferably, the valve cover body is provided with an anti-collision post at the bottom right end.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] This utility model discloses a swing check valve with an easy-to-replace rocker arm. By setting a set of fixing plates in the mounting groove and a set of abutment plates on the valve cover body, the first semi-circular groove on the fixing plate and the second semi-circular groove on the abutment plate form a mounting hole. When replacing the rocker arm, only the valve cover body needs to be removed to remove the rotating shaft for replacement. On the one hand, the replacement of the rocker arm is more convenient, and on the other hand, there is no need to open a perforation in the valve body, which prevents the risk of fluid leakage from the perforation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 This is a cross-sectional view of the present invention;

[0017] Figure 3 This is a schematic diagram of the valve body structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the valve cover body structure of this utility model.

[0019] In the diagram: 1. Valve body; 2. Valve cover connecting flange; 3. Valve cover body; 4. Mounting part; 5. Mounting groove; 6. Fixing plate; 7. First semi-circular groove; 8. Abutment plate; 9. Second semi-circular groove; 10. Rotating shaft; 11. Rocker arm; 12. Valve disc; 13. Annular sealing groove; 14. Annular sealing gasket; 15. Connecting pipe; 16. Valve seat groove; 17. Valve seat body; 18. Anti-collision post. Detailed Implementation

[0020] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of this utility model is not limited to the following embodiments, and any modifications and / or alterations made to this utility model will fall within the protection scope of this utility model.

[0021] In this invention, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used are commercially available or commonly used in the field. Unless otherwise specified, the methods in the following embodiments are conventional methods in the field. Unless otherwise specified, the components or equipment in the following embodiments are general standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0022] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following detailed description, many specific details are set forth to facilitate explanation and provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may be practiced by those skilled in the art without these specific details.

[0023] like Figures 1-4As shown, a swing check valve with a replaceable rocker arm 11 includes a valve body 1. A valve cover connecting flange 2 is located at the top of the valve body 1. A valve cover body 3 is detachably and fixedly connected to the valve cover connecting flange 2 by several bolts and nuts. A mounting part 4 is provided on the valve body 1. A mounting groove 5 is formed inside the mounting part 4, and a set of fixing plates 6 is provided within the mounting groove 5. Each of the fixing plates 6 has a first semi-circular groove 7. The bottom of the valve cover body 3 is located within the valve body. A set of abutment plates 8 are fixedly connected to the inner part of the valve cover. The abutment plates 8 have a second semi-circular groove 9. When the valve cover body 3 is flanged to the valve cover connecting flange 2, the abutment plates 8 and the fixed plates 6 are close to each other. The first semi-circular groove 7 and the second semi-circular groove 9 form a mounting hole. A rotating shaft 10 is rotatably connected in the mounting hole. A rocker arm 11 is passed through the rotating shaft 10. Both sides of the rocker arm 11 are in contact with the close surfaces of the fixed plate 6 and the abutment plates 8.

[0024] In the above technical solution, by setting a set of fixing plates 6 in the mounting groove 5 and setting a set of abutting plates 8 on the valve cover body 3, the first semi-circular groove 7 on the fixing plate 6 and the second semi-circular groove 9 on the abutting plate 8 form a mounting hole. When replacing the rocker arm 11, only the valve cover body 3 needs to be removed to remove the rotating shaft 10 for replacement. On the one hand, the replacement of the rocker arm 11 is more convenient, and on the other hand, there is no need to open a perforation on the valve body 1, which prevents the risk of fluid leakage from the perforation.

[0025] In this utility model, an annular sealing groove 13 is provided at the top inner ring position of the valve cover connecting flange 2, and an annular sealing gasket 14 is provided in the annular sealing groove 13.

[0026] In the above technical solution, by setting an annular sealing gasket 14, it can be used to seal the gap between the valve cover body 3 and the valve cover connecting flange 2 to prevent fluid leakage.

[0027] In this utility model, the rocker arm 11 is detachably and fixedly connected to the valve disc 12 at the end away from the shaft 10 by bolts and nuts. Both ends of the valve body 1 are provided with connecting pipes 15, and the connecting pipes 15 penetrate the interior of the valve body 1. The valve body 1 has an annular valve seat groove 16 at the end near the mounting groove 5, and the valve seat groove 16 is provided with a valve seat body 17.

[0028] In the above technical solution, by setting the valve disc 12 and the valve seat body 17, when the fluid flows backward, the valve disc 12 is driven to swing under the action of the rocker arm 11 and abut against the valve seat body 17, which can prevent the fluid from flowing back and achieve the function of check flow.

[0029] In this utility model, the bottom right end of the valve cover body 3 is provided with an anti-collision post 18.

[0030] In the above technical solution, by setting the anti-collision post 18, when the fluid is flowing in the forward direction, it can prevent the fluid from colliding with the valve disc 12 and the valve cover body 3, thereby reducing the wear and tear on the valve components.

[0031] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A swing check valve with an easily replaceable rocker arm, characterized in that: The valve body (1) includes a valve body (1), a valve cover connecting flange (2) on the top of the valve body (1), a valve cover body (3) detachably and fixedly connected to the valve cover connecting flange (2) by several bolts and several nuts, a mounting part (4) on the valve body (1), a mounting groove (5) is opened on the mounting part (4) inside the valve body (1), a set of fixing plates (6) is provided in the mounting groove (5), and a first semi-circular groove (7) is opened on each of the fixing plates (6), and the bottom of the valve cover body (3) is... A set of abutment plates (8) are fixedly connected to a portion of the valve body (1). The abutment plates (8) have a second semi-circular groove (9). When the valve cover body (3) flange is connected to the valve cover connecting flange (2), the abutment plates (8) abut against the near ends of the fixed plates (6). The first semi-circular groove (7) and the second semi-circular groove (9) form a mounting hole. A rotating shaft (10) is rotatably connected in the mounting hole. A rocker arm (11) passes through the rotating shaft (10). (11) Both sides are in contact with the surfaces of the fixing plate (6) and the abutment plate (8).

2. A swing check valve with an easily replaceable rocker arm as described in claim 1, characterized in that: The rocker arm (11) is detachably and fixedly connected to the valve disc (12) at the end that passes through the rotating shaft (10) via bolts and nuts.

3. A swing check valve with an easily replaceable rocker arm as described in claim 2, characterized in that: The valve cover connecting flange (2) has an annular sealing groove (13) at the top inner ring position, and an annular sealing gasket (14) is provided in the annular sealing groove (13).

4. A swing check valve with an easily replaceable rocker arm as described in claim 3, characterized in that: The valve body (1) is provided with connecting pipes (15) at both ends. The connecting pipes (15) penetrate the interior of the valve body (1). The valve body (1) is provided with an annular valve seat groove (16) at one end near the mounting groove (5). The valve seat body (17) is provided in the valve seat groove (16).

5. A swing check valve with an easily replaceable rocker arm according to claim 4, characterized in that: The valve cover body (3) is provided with a crash bar (18) at the bottom right end.

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