Anti-locking flat gate valve with combined valve seat

Abstract

The utility model provides an anti-locking flat gate valve with a combined valve seat, which comprises a gate valve body, a cleaning anti-locking base, a flat gate plate, a valve cover, a transmission mechanism of the valve cover and a sealing valve seat, the cleaning anti-locking base is fixedly mounted below the gate valve body, and the flat gate plate is arranged inside the gate valve body. The flat gate plate is fixedly connected with the valve cover and the transmission mechanism thereof, the valve cover and the transmission mechanism thereof are fixedly mounted on the gate valve body, and the sealing valve seats are fixedly mounted in the gate valve body and located on the two sides of the flat gate plate; the spring telescopic structure arranged in the flat flashboard cleaning device can provide certain elastic force, help the flat flashboard to be better attached to the cleaning flashboard seat and enhance the sealing performance of the flat flashboard, meanwhile, certain assistance is provided for resetting and further cleaning, the spiral surface cleaning piece can guide media to form rotary flow, and the cleaning effect is improved. Sediments or dirt on the surfaces of the flashboard seat and the valve plate and on the inner surface of a flashboard sunken groove can be stripped and removed easily.

Description

Technical Field

[0001] The utility model belongs to the technical field of flat gate valves, and in particular relates to a flat gate valve with a combined valve seat to prevent jamming. Background Art

[0002] The flat gate valve is a valve that uses a gate to open and close, and is widely used in various fluid pipeline systems. Its working principle is that when the gate is fully opened, the fluid can pass smoothly; when the gate is fully closed, the fluid is completely blocked.

[0003] In a flat gate valve, the gate is a key component. It is usually made of materials such as metal or plastic and is in the shape of a flat plate. The edge of the gate usually fits tightly against the valve seat to form a sealing surface to prevent the flow of fluid. By operating the transmission components such as the valve stem or electric device, the gate can move up and down in the valve seat to open and close the valve.

[0004] At present, there is a depression in the middle of the valve body of the flat gate valve for accommodating the gate valve plate, which is used to accommodate the arc-shaped depression groove under the gate valve plate, thereby completely closing the channel for the flow of the medium. However, the depression will retain a large amount of impurities or dirt in the medium. As the gate valve plate is pressed down, the impurities or dirt will stubbornly adhere to the inner surface of the depression under the action of pressure. As the impurities or dirt accumulate, the gate valve plate will not only be unable to be completely closed, but will also cause subsequent jamming.

[0005] Therefore, it is very necessary to invent a flat gate valve with a combined valve seat to prevent sticking. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a combined valve seat anti-stuck flat gate valve, including a gate valve body, a cleaning anti-stuck base, a flat gate plate, a valve cover and its transmission mechanism and a sealing valve seat, a cleaning anti-stuck base is fixedly installed below the gate valve body, a flat gate plate is arranged inside the gate valve body, the flat gate plate is fixedly connected to the valve cover and its transmission mechanism, the valve cover and its transmission mechanism are fixedly installed on the gate valve body, and a sealing valve seat is fixedly installed in the gate valve body, and the sealing valve seat is located on both sides of the flat gate plate;

[0007] The dirt cleaning and anti-stuck base includes a valve body bottom cover, a cleaning gate seat, a surface cleaning sheet, a guide rod and a limit cylinder. The valve body bottom cover is fixedly installed under the valve body of the gate valve. A cleaning gate seat is sealingly and slidably installed in the valve body bottom cover. A surface cleaning sheet is provided on the cleaning gate seat. A guide rod is fixedly installed under the cleaning gate seat. The guide rod is slidably installed in the guide rod, and the guide rod is fixedly installed in the valve body bottom cover.

[0008] Preferably, the valve body bottom cover is a 'U'-shaped structure, a flange is integrally provided on the valve body bottom cover, and a sealing ring and a sealing gasket are embedded on a cleaning gate seat slidably mounted on the inner side of the valve body bottom cover.

[0009] Preferably, the cleaning gate seat is a "concave"-shaped structure, the concave groove of the cleaning gate seat is semicircular, and the surface cleaning sheet is arranged on the surface of the concave groove.

[0010] Preferably, a recessed groove of the same shape as the cleaning gate seat is provided in the middle below the flat gate plate, and a surface cleaning sheet is provided on the surface of the recessed groove of the flat gate plate. The two recessed grooves form a liquid flow hole, and the surface cleaning sheets provided on the surfaces of the two recessed grooves together form a spiral structure.

[0011] Preferably, at least two guide rods are provided, and the lower ends of the guide rods slide into the interior of the limiting cylinder and are connected to springs installed inside the limiting cylinder.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model provides a dirt-cleaning and anti-stuck base under the gate valve body, and the spring telescopic structure arranged inside the base can provide a certain elastic force to help the flat gate to better fit the cleaning gate seat and enhance its sealing performance. At the same time, it provides a certain assistance for resetting and then cleaning. The cleaning gate seat can scrape and clean the surface of the recessed part of the gate valve body with the help of elastic force to reduce the retention of debris or dirt. After the spiral surface cleaning sheets are adapted to each other, they can guide the medium to form a rotating flow, which helps to peel off and remove sediment or dirt on the gate seat, the surface of the valve plate and the inner surface of the gate recess groove, and avoid the jamming of the gate due to the retention of debris and dirt. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model.

[0016] Figure 3 This utility model Figure 2 Schematic diagram of the structure without the flat gate installed.

[0017] In the figure:

[0018] Gate valve body 1, cleaning and anti-stuck base 2, valve body bottom cover 21, cleaning gate seat 22, surface cleaning sheet 23, guide rod 24, limit cylinder 25, flat gate 3, valve cover and its transmission mechanism 4, sealing valve seat 5. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0020] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0021] As attached Figure 1 To Attachment Figure 3 As shown:

[0022] The utility model provides a flat gate valve with a combined valve seat to prevent sticking, comprising a gate valve body 1, a pollution-free anti-sticking base 2, a flat gate plate 3, a valve cover and its transmission mechanism 4 and a sealing valve seat 5, wherein a pollution-free anti-sticking base 2 is fixedly installed below the gate valve body 1, a flat gate plate 3 is arranged inside the gate valve body 1, the flat gate plate 3 is fixedly connected to the valve cover and its transmission mechanism 4, the valve cover and its transmission mechanism 4 are fixedly installed on the gate valve body 1, a sealing valve seat 5 is fixedly installed inside the gate valve body 1, the sealing valve seat 5 is located on both sides of the flat gate plate 3, and the sealing valve seat 5 is a combined valve seat, which is composed of an outer valve seat, an inner valve seat, a spring and a guide rod.

[0023] The cleaning and anti-stuck base 2 includes a valve body bottom cover 21, a cleaning gate seat 22, a surface cleaning sheet 23, a guide rod 24 and a limiting cylinder 25. The valve body bottom cover 21 is fixedly installed below the gate valve body 1. A cleaning gate seat 22 is sealingly and slidably installed in the valve body bottom cover 21. A surface cleaning sheet 23 is provided on the cleaning gate seat 22. A guide rod 24 is fixedly installed below the cleaning gate seat 22. The guide rod 24 is slidably installed in the guide rod 24, and the guide rod 24 is fixedly installed in the valve body bottom cover 21.

[0024] Embodiment 1:

[0025] Specifically, the valve body bottom cover 21 is a "U"-shaped structure, and a flange is integrally provided on the valve body bottom cover 21. A sealing ring and a sealing gasket are embedded on the cleaning gate seat 22 slidably installed on the inner side of the valve body bottom cover 21. The valve body bottom cover 21 is designed as a "U"-shaped structure with a flange, which not only increases the stability of the structure, but also facilitates the connection with other components. The cleaning gate seat 22 is designed as a "concave"-shaped structure, and a sealing ring and a sealing gasket are installed thereon, which can effectively prevent leakage of the medium and enhance the stability of the structure.

[0026] Specifically, the cleaning gate seat 22 is a "concave"-shaped structure, the concave groove of the cleaning gate seat 22 is semicircular, and the surface cleaning sheet 23 is arranged on the surface of the concave groove.

[0027] Specifically, a recessed groove of the same shape as the cleaning gate seat 22 is arranged in the middle below the flat gate 3, and a surface cleaning sheet 23 is arranged on the surface of the recessed groove of the flat gate 3. The two recessed grooves form a liquid flow hole, and the surface cleaning sheets 23 arranged on the surfaces of the two recessed grooves together form a spiral structure. The surface cleaning sheet 23 is arranged on the surface of the recessed groove of the cleaning gate seat 22, and forms a spiral structure with the surface cleaning sheet 23 on the surface of the recessed groove of the flat gate 3. This design can effectively guide the flow of the medium, thereby cleaning the surface during rotation.

[0028] Specifically, at least two guide rods 24 are provided, and the lower end of the guide rod 24 slides into the interior of the limiting cylinder 25 and is connected to the spring installed inside the limiting cylinder 25. This design can provide a certain elasticity and guidance for the cleaning gate seat, ensuring its normal operation and preventing it from getting stuck.

[0029] Embodiment 2:

[0030] When the flat gate valve is in the open state, the medium channel formed by the flat gate plate 3 and the cleaning gate plate seat 22 of the valve body bottom cover 21 is connected to the gate valve body 1, and the center lines of the two are on the same horizontal line. In this process, the surface cleaning sheet 23 forms a spiral structure that can effectively guide the flow of the medium, thereby cleaning the surfaces of the recessed grooves of the two during the rotation process. When the flat gate valve is ready to be opened, when the flat gate plate 3 moves upward, the spring force of the limiting cylinder 25 assists the movement of the flat gate plate 3 through the cleaning gate plate seat 22, and in this process, the cleaning gate plate seat 22 also moves upward and cleans the surface of the middle recess of the gate valve body 1, so that debris or dirt is carried away by the flowing medium, thereby preventing or large-scale retention of dirt.

[0031] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A flat gate valve with a combined valve seat to prevent sticking, characterized in that: The gate valve comprises a gate valve body (1), a cleaning and anti-stuck base (2), a flat gate plate (3), a valve cover and its transmission mechanism (4), and a sealing valve seat (5); the cleaning and anti-stuck base (2) is fixedly installed below the gate valve body (1); a flat gate plate (3) is arranged inside the gate valve body (1); the flat gate plate (3) is fixedly connected to the valve cover and its transmission mechanism (4); the valve cover and its transmission mechanism (4) are fixedly installed on the gate valve body (1); a sealing valve seat (5) is fixedly installed inside the gate valve body (1); and the sealing valve seat (5) is located on both sides of the flat gate plate (3); The dirt-cleaning and anti-stuck base (2) comprises a valve body bottom cover (21), a cleaning gate seat (22), a surface cleaning sheet (23), a guide rod (24) and a limiting cylinder (25); the valve body bottom cover (21) is fixedly mounted below the gate valve body (1); a cleaning gate seat (22) is sealingly and slidably mounted inside the valve body bottom cover (21); a surface cleaning sheet (23) is provided on the cleaning gate seat (22); a guide rod (24) is fixedly mounted below the cleaning gate seat (22); the guide rod (24) is slidably mounted inside the guide rod (24); and the guide rod (24) is fixedly mounted inside the valve body bottom cover (21).

2. A flat gate valve with a combined valve seat and anti-seizure function as claimed in claim 1, characterized in that: The valve body bottom cover (21) is a 'U'-shaped structure. A flange is integrally arranged on the valve body bottom cover (21). A sealing ring and a sealing gasket are embedded on a cleaning gate seat (22) slidably mounted inside the valve body bottom cover (21).

3. A flat gate valve with a combined valve seat and anti-seizure function as claimed in claim 1, characterized in that: The cleaning gate seat (22) is a "concave"-shaped structure, the concave groove of the cleaning gate seat (22) is semicircular, and the surface cleaning sheet (23) is arranged on the surface of the concave groove.

4. A flat gate valve with a combined valve seat and anti-seizure function as claimed in claim 1, characterized in that: A recessed groove having the same shape as the cleaning gate seat (22) is arranged in the middle below the flat gate plate (3), and a surface cleaning sheet (23) is arranged on the surface of the recessed groove of the flat gate plate (3). The two recessed grooves form a liquid flow hole, and the surface cleaning sheets (23) arranged on the surfaces of the two recessed grooves together form a spiral structure.

5. A flat gate valve with a combined valve seat and anti-seizure function as claimed in claim 1, characterized in that: At least two guide rods (24) are provided, and the lower ends of the guide rods (24) slide into the interior of the limiting cylinder (25) and are connected to the spring installed inside the limiting cylinder (25).

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