Self-sealing guide type stop check valve

Abstract

The utility model discloses a self-sealing guide type stop check valve, belongs to the technical field of check valves, and solves the problems that a rocking wheel is fixed only through friction force between a non-slip mat and the rocking wheel, the rocking wheel still rotates when subjected to large external force, and the protection effect is poor in the existing device, and the self-sealing guide type stop check valve comprises a valve body, a fixing seat is fixedly mounted at the top of the valve body, a mounting seat is assembled on the top surface of the fixing seat, a valve rod is inserted into the top of the mounting seat, a rocking wheel is arranged at the top of the valve rod, a threaded rod is fixedly mounted on the top surface of the valve rod, the rocking wheel is fixedly mounted on the top surface of the threaded rod, and a protection assembly is arranged at the top of the valve rod. The rocking wheel is protected through the protective cover and the protective cover, direct contact between external force and the rocking wheel is avoided, when the external force is applied to the protective cover or the protective cover, the protective cover and the protective cover can rotate on the threaded sleeve, then the external force is removed through rotation, and the situation that the rocking wheel rotates due to mistaken touch is avoided.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, specifically a self-sealing guided shut-off check valve. Background Technology

[0002] A self-sealing guided shut-off check valve is a valve that functions as both a shut-off valve and a check valve. It automatically opens and closes the valve disc based on the flow of the medium to prevent backflow of the medium.

[0003] A search revealed that patent application number 202421584199.2 discloses a shut-off check valve, comprising a valve body, a fixed seat fixedly connected to the top of the valve body, a mounting seat provided on the top of the fixed seat, a plurality of screws fixedly connected to the fixed seat, the top ends of the screws movably passing through the mounting seat and fitted with a first nut, a valve stem inserted into the top of the mounting seat, a rocker wheel fixedly connected to the top of the valve stem, a mounting bracket provided near the right side of the top of the mounting seat, a mounting hole provided near the bottom of the mounting bracket, the top ends of adjacent screws movably passing through the mounting hole and fitted with a washer and a second nut, a third nut fixedly connected to the right side of the mounting bracket near the top, a crank handle provided on the right side of the mounting bracket, a lead screw fixedly connected to the left side of the crank handle, the left end of the lead screw passing through the third nut and fixedly fitted with a bearing, a connecting block fixedly connected to the left side of the bearing, and a movable plate fixedly connected to the left side of the connecting block;

[0004] Although this shut-off check valve uses a rotating handle to move the movable plate and the anti-slip pad towards the rocker wheel until the anti-slip pad is in contact with the outer edge of the rocker wheel, thus fixing the rocker wheel and preventing it from rotating due to accidental contact, thereby ensuring the use of the valve, this shut-off check valve only relies on the friction between the anti-slip pad and the rocker wheel to fix the rocker wheel. When the rocker wheel is subjected to a large external force, it will still rotate, resulting in poor protection.

[0005] Therefore, we propose a self-sealing guided shut-off check valve. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a self-sealing guided shut-off check valve, which solves the problem that existing devices only rely on the friction between the anti-slip pad and the rocker wheel to fix the rocker wheel, and the rocker wheel will still rotate when subjected to a large external force, resulting in poor protection.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a self-sealing guided shut-off check valve, including a valve body, flanges fixedly installed on both the left and right sides of the valve body, a fixed seat fixedly installed on the top of the valve body, an mounting seat assembled on the top surface of the fixed seat, a valve stem inserted into the top of the mounting seat, and a rocker wheel provided on the top of the valve stem;

[0008] A threaded rod is fixedly installed on the top surface of the valve stem, the rocker wheel is fixedly installed on the top surface of the threaded rod, and a protective component is provided on the top of the valve stem;

[0009] The protective component includes a hollow, open-top threaded sleeve with an inner diameter matching the diameter of the threaded rod. The inner wall of the threaded sleeve has an internal thread that matches the threaded rod. A protective cover is rotatably mounted on the top surface of the threaded sleeve via a bearing ring. The bottom surfaces of the protective component and the protective cover are movably fitted onto the outer surface of the valve stem. The rocker wheel is movably fitted inside the protective cover. A protective cap is provided on the top surface of the protective cover.

[0010] Preferably, the protective cover is threaded onto the outer surface of the top of the protective cover, and the protective cover and the protective cover are respectively provided with a first anti-slip groove and a second anti-slip groove on their arc surfaces. The first anti-slip groove and the second anti-slip groove facilitate the rotation of the first anti-slip groove and the protective cover, so as to facilitate the disassembly and assembly of the protective cover and the protective cover.

[0011] Preferably, handles arranged in a circular array are fixedly installed on the arc surface of the threaded sleeve, which facilitates the rotation of the threaded sleeve.

[0012] Preferably, a limiting pad located below the threaded sleeve is fixedly fitted on the outer surface of the valve stem, wherein the limiting pad facilitates the support of the threaded sleeve.

[0013] This utility model provides a self-sealing guided shut-off check valve. It has the following beneficial effects:

[0014] This self-sealing guided shut-off check valve protects the rocker wheel with a protective cover and a protective shield, preventing direct contact between external forces and the rocker wheel. When external force is applied to the protective cover or shield, the cover and shield can rotate on the threaded sleeve, thereby dissipating the external force and preventing accidental rotation of the rocker wheel. The protective cover and shield also prevent rainwater from eroding the surface of the rocker wheel, which is beneficial for protecting the rocker wheel and improves the protection effect. This solves the problem that existing devices only rely on the friction between the anti-slip pad and the rocker wheel to fix it, which still allows the rocker wheel to rotate when subjected to large external forces, resulting in poor protection. Attached Figure Description

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

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

[0017] Figure 3 This is a schematic diagram of the rocker wheel, threaded rod, and valve stem structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the disassembled structure of the protective component of this utility model.

[0019] In the diagram: 1. Valve body; 2. Flange; 3. Fixed seat; 4. Mounting seat; 5. Valve stem; 6. Rocker wheel; 7. Threaded rod; 8. Protective component; 81. Threaded sleeve; 82. Handle; 83. Limiting pad; 84. Protective cover; 85. First anti-slip groove; 86. Protective cover; 87. Second anti-slip groove. 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. Example 1

[0021] like Figure 1-4 As shown: The system includes a valve body 1, with flanges 2 fixedly mounted on both sides. A mounting base 3 is fixedly mounted on the top of the valve body 1. A mounting seat 4 is fitted onto the top surface of the mounting base 3. A valve stem 5 is inserted into the top of the mounting seat 4. A rocker wheel 6 is mounted on the top of the valve stem 5. A threaded rod 7 is fixedly mounted on the top surface of the valve stem 5. The rocker wheel 6 is fixedly mounted on the top surface of the threaded rod 7. A protective assembly 8 is mounted on the top of the valve stem 5. The protective assembly 8 includes a hollow, open-top threaded sleeve 81. The inner diameter of the threaded sleeve 81 matches the diameter of the threaded rod 7. The inner wall of the threaded sleeve 81 has an internal thread adapted to the threaded rod 7. A protective cover 84 is rotatably mounted on the top surface of the threaded sleeve 81 via a bearing ring. The bottom surfaces of the protective assembly 8 and the protective cover 84 are movably fitted onto the outer surface of the valve stem 5. The rocker wheel 6 is movably fitted inside the protective cover 84. A protective cap is provided on the top surface of the protective cover 84. 86. The protective cover 86 is threaded onto the outer surface of the top of the protective cover 84. The protective cover 84 and the protective cover 86 are respectively provided with a first anti-slip groove 85 and a second anti-slip groove 87 on their arc surfaces. The handles 82 arranged in a ring array are fixedly installed on the arc surface of the threaded sleeve 81. The valve stem 5 is fixedly fitted with a limiting pad 83 located below the threaded sleeve 81. The protective cover 86 and the protective cover 84 protect the rocker wheel 6, preventing external forces from directly contacting the rocker wheel 6. When external forces are applied to the protective cover 86 or the protective cover 84, the protective cover 86 and the protective cover 84 can rotate on the threaded sleeve 81, and then the external forces are discharged by rotation, preventing the rocker wheel 6 from rotating due to accidental contact. The protective cover 86 and the protective cover 84 can also prevent rainwater from eroding the surface of the rocker wheel 6, which is beneficial to the protection of the rocker wheel 6 and achieves the purpose of improving the protection effect of the rocker wheel 6.

[0022] The working principle and usage process of this utility model are as follows: This self-sealing guided shut-off check valve is connected to the pipeline through flange 2. Then, the protective cover 86 is opened, and the threaded sleeve 81 is rotated by handle 82 to separate the threaded sleeve 81 from the threaded rod 7. Subsequently, the protective cover 84 and the threaded sleeve 81 will move downward along the surface of the valve rod 5 and finally move to the top surface of the limiting pad 83. Then, the valve rod 5 can be rotated by the rocker wheel 6 to control the opening and closing of the valve body 1. When it is not necessary to rotate the valve rod 5, the threaded sleeve 81 and the protective cover 84 are moved upward along the surface of the valve rod 5. Then, the threaded sleeve 81 is threaded onto the outer surface of the threaded rod 7 again, and then the protective cover 86 is placed on top of the protective cover 84 to protect the rocker wheel 6 and prevent external objects from directly contacting the rocker wheel 6. When the external object touches the protective cover 86 or the protective cover 84, the protective cover 86 and the protective cover 84 will rotate on the top surface of the threaded sleeve 81 to relieve the external force and prevent the rocker wheel 6 from rotating due to accidental contact.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A self-sealing guided shut-off check valve, comprising a valve body (1), wherein flanges (2) are fixedly installed on both the left and right sides of the valve body (1), a fixed seat (3) is fixedly installed on the top of the valve body (1), a mounting seat (4) is assembled on the top surface of the fixed seat (3), a valve stem (5) is inserted into the top of the mounting seat (4), and a rocker wheel (6) is provided on the top of the valve stem (5). Its features are: A threaded rod (7) is fixedly installed on the top surface of the valve stem (5), and the rocker wheel (6) is fixedly installed on the top surface of the threaded rod (7). A protective component (8) is provided on the top of the valve stem (5). The protective component (8) includes a hollow threaded sleeve (81) with an open top. The inner diameter of the threaded sleeve (81) matches the diameter of the threaded rod (7). The inner wall of the threaded sleeve (81) is provided with an internal thread that matches the threaded rod (7). A protective cover (84) is rotatably mounted on the top surface of the threaded sleeve (81) through a bearing ring. The bottom surfaces of the protective component (8) and the protective cover (84) are movably fitted on the outer surface of the valve stem (5). The rocker wheel (6) is movably fitted inside the protective cover (84). A protective cap (86) is provided on the top surface of the protective cover (84).

2. The self-sealing guided shut-off check valve according to claim 1, characterized in that: The protective cover (86) is threaded onto the outer surface of the top of the protective cover (84). The protective cover (84) and the protective cover (86) are respectively provided with a first anti-slip groove (85) and a second anti-slip groove (87) on their arc surfaces.

3. The self-sealing guided shut-off check valve according to claim 1, characterized in that: The threaded sleeve (81) has handles (82) arranged in a ring array fixedly installed on its arc surface.

4. The self-sealing guided shut-off check valve according to claim 1, characterized in that: The outer surface of the valve stem (5) is fixedly fitted with a limiting pad (83) located below the threaded sleeve (81).

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