Vertical check valve

Abstract

The utility model discloses a vertical check valve, which relates to the technical field of check valves, and comprises a valve body, a pin shaft and a valve cover, two ends of the pin shaft are fixedly connected with the inner wall of the valve body, the pin shaft is rotatably connected with a rocker in a penetrating manner, one side of the rocker far away from the pin shaft is slidably connected with a valve clack in a penetrating manner, and the shaft end of the valve clack is sleeved with a hexagon nut I in a threaded manner; a valve seat is fixedly connected to one side of the pipe wall of the valve body, the side, away from the first hexagon nut, of the valve clack is attached to one side of the valve seat, the valve deck is movably installed at the top of the valve body and located over the rocker, a support is fixedly connected to one side of the top of the inner wall of the valve body, and a valve deck gasket is fixedly connected to one side of the support and plays a sealing role. A groove is formed in an opening in the top of the inner wall of the valve body, the bottom of the valve deck gasket is attached to the inner wall of the groove of the valve body and installed at a connector in the top of the valve body, a good sealing effect is achieved, and the problems that a traditional vertical check valve is complex in internal structure, troublesome to disassemble and high in maintenance cost are solved.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, specifically a vertical check valve. Background Technology

[0002] A check valve is an automatic valve that automatically opens and closes based on the flow of the medium itself. It is mainly installed on pipelines where the medium flows in one direction only, allowing the medium to flow in only one direction to prevent accidents. Among them, the vertical check valve is a type of check valve designed to be installed vertically on the pipeline. Compared with the horizontal check valve, the vertical check valve is suitable for pipeline systems that require vertical installation. Its main purpose is to prevent the medium from flowing backward in the pipeline, preventing equipment damage or malfunction. Vertical check valves require regular maintenance during long-term use.

[0003] However, traditional vertical check valves have a relatively complex internal structure, making disassembly more difficult and resulting in higher maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a vertical check valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vertical check valve, comprising a valve body, and further comprising,

[0006] A pin is fixedly connected to the inner wall of the valve body at both ends. A rocker arm is rotatably connected through the pin. A valve disc is slidably connected to the side of the rocker arm away from the pin. A hexagonal nut is threaded onto the shaft end of the valve disc. A valve seat is fixedly connected to one side of the pipe wall of the valve body. The side of the valve disc away from the hexagonal nut fits against the side of the valve seat.

[0007] A valve cover is movably mounted on top of the valve body, and the valve cover is located directly above the rocker arm.

[0008] Preferably, a bracket is fixedly connected to one side of the top of the inner wall of the valve body, and a valve cover gasket is fixedly connected to one side of the bracket.

[0009] Preferably, a groove is provided at the top opening of the inner wall of the valve body, and the bottom of the valve cover gasket fits into the inner wall of the groove of the valve body.

[0010] Preferably, a threaded hole is provided at the top opening of the valve body, and a double-ended stud is threaded through the surface of the valve cover and the threaded hole of the valve body. Two hexagonal nuts are threaded onto both the upper and lower ends of the double-ended stud.

[0011] Preferably, a notch is provided on one side of the top of the inner wall of the valve body, and the valve disc fits against the surface of the notch on the corner away from the valve seat.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model, by setting a pin, rocker arm, valve disc, and valve cover, ensures good sealing when the valve disc side is in check state and fits against the valve seat side. When in flow state, the top corner of the valve disc fits against the top of the inner wall of the valve body. The structure is simple and has a low failure rate. When maintenance is required, simply remove the hexagonal nut from the double-ended stud and then remove the valve cover from the top opening of the valve body. The operation is convenient and quick, solving the problem that the internal structure of traditional vertical check valves is relatively complex, making disassembly troublesome and resulting in high maintenance costs.

[0014] This utility model, by setting a double-ended stud and a hexagonal nut, allows for quick disassembly and assembly of the valve cover, improving operational efficiency during maintenance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a disassembly diagram of the valve cover structure of this utility model;

[0017] Figure 3 This is a cross-sectional view of the valve body structure in the passage state of this utility model;

[0018] Figure 4 This is a cross-sectional view of the valve body structure under check valve conditions.

[0019] In the diagram: 1. Valve body; 2. Valve seat; 3. Valve disc; 4. Hex nut one; 5. Rocker arm; 6. Pin; 7. Bracket; 8. Valve cover gasket; 9. Valve cover; 10. Double-ended stud; 11. Hex nut two. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 This utility model provides a technical solution: a vertical check valve, including a valve body 1, and further including...

[0022] Pin 6, both ends of pin 6 are fixedly connected to the inner wall of valve body 1. Pin 6 is rotatably connected to rocker arm 5. The side of rocker arm 5 away from pin 6 is slidably connected to valve disc 3. The shaft end of valve disc 3 is threaded with hexagonal nut 4. Valve seat 2 is fixedly connected to one side of the pipe wall of valve body 1. The side of valve disc 3 away from hexagonal nut 4 is in contact with the side of valve seat 2.

[0023] Valve cover 9 is movably mounted on the top of valve body 1, and is located directly above rocker arm 5;

[0024] A bracket 7 is fixedly connected to one side of the top of the inner wall of the valve body 1, and a valve cover gasket 8 is fixedly connected to one side of the bracket 7 to provide a sealing function.

[0025] A groove is provided at the top opening of the inner wall of the valve body 1. The bottom of the valve cover gasket 8 fits into the inner wall of the groove of the valve body 1 and is installed at the interface at the top of the valve body 1 to achieve a good sealing effect.

[0026] A threaded hole is provided at the top opening of the valve body 1. A double-ended stud 10 is threaded through the surface of the valve cover 9 and the threaded hole of the valve body 1. Both ends of the double-ended stud 10 are threaded with hexagonal nuts 11. The valve cover 9 is installed on the top of the valve body 1 through the double-ended stud 10, which facilitates disassembly and maintenance.

[0027] A notch is provided on one side of the top of the inner wall of the valve body 1. The valve disc 3 is attached to the surface of the notch of the valve body 1 at the corner away from the valve seat 2. In the passage state, the valve disc 3 is attached to the notch of the valve body 1, making the state of the valve disc 3 more stable.

[0028] Working principle: The valve disc 3 is installed on the rocker arm 5 by the hexagonal nut 4. The rocker arm 5 is movably installed inside the valve body 1 by the pin 6. In the check valve state, the side of the valve disc 3 is in contact with the side of the valve seat 2, which provides good sealing. In the open valve state, the top corner of the valve disc 3 is in contact with the top of the inner wall of the valve body 1. The structure is simple and the damage rate is low. When maintenance is required, the hexagonal nut 11 is removed from the double-ended stud 10, and then the valve cover 9 is removed from the top opening of the valve body 1. The operation is convenient and quick, which solves the problem that the internal structure of the traditional vertical check valve is relatively complex, and the disassembly is more troublesome, resulting in higher maintenance costs.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vertical check valve, comprising a valve body (1), characterized in that: It also includes, A pin (6) is fixedly connected to the inner wall of the valve body (1) at both ends. A rocker arm (5) is rotatably connected through the pin (6). A valve disc (3) is slidably connected through the rocker arm (5) on the side away from the pin (6). A hexagonal nut (4) is threaded onto the shaft end of the valve disc (3). A valve seat (2) is fixedly connected to one side of the pipe wall of the valve body (1). The side of the valve disc (3) away from the hexagonal nut (4) is attached to one side of the valve seat (2). Valve cover (9) is movably mounted on the top of valve body (1) and is located directly above rocker arm (5).

2. A vertical check valve according to claim 1, characterized in that: A bracket (7) is fixedly connected to one side of the top of the inner wall of the valve body (1), and a valve cover gasket (8) is fixedly connected to one side of the bracket (7).

3. A vertical check valve according to claim 2, characterized in that: The valve body (1) has a groove at the top opening of its inner wall, and the bottom of the valve cover gasket (8) fits into the inner wall of the groove of the valve body (1).

4. A vertical check valve according to claim 1, characterized in that: The valve body (1) has a threaded hole at the top opening. The surface of the valve cover (9) and the threaded hole of the valve body (1) are threaded together with a double-ended stud (10). Both the upper and lower ends of the double-ended stud (10) are threaded with hexagonal nuts (11).

5. A vertical check valve according to claim 1, characterized in that: A notch is provided on one side of the top of the inner wall of the valve body (1), and the valve disc (3) is attached to the notch surface of the valve body (1) at the corner away from the valve seat (2).

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