High-strength gate valve

Abstract

The utility model discloses a high-strength gate valve which comprises a gate valve body, the left side of the gate valve body is fixedly connected with a first flange, and the right side of the gate valve body is fixedly connected with a second flange. The gate valve body, the base layer, the first reinforcing layer, the first anti-oxidation protective layer, the first polyphenylene sulfone resin coating, the first polyethylene terephthalate coating, the second reinforcing layer, the second anti-oxidation protective layer, the second polyphenylene sulfone resin coating and the second polyethylene terephthalate coating are matched with one another; and the effect of high oxidation resistance is achieved, so that the gate valve is not prone to being oxidized and rusted, and the service life of the gate valve is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a high-strength gate valve. Background Art

[0002] The gate valve's opening and closing parts are the gate discs, and the direction of movement of the gate discs is perpendicular to the direction of the fluid. The gate valve can only be fully opened or fully closed, and cannot be adjusted or throttled. The gate disc has two sealing surfaces. The two sealing surfaces of the most commonly used mode of the gate valve form a wedge shape. The wedge angle varies with the valve parameters, usually 5°, and 2°52' when the medium temperature is not high. The gate disc of the wedge gate valve can be made into a whole, called a rigid gate disc.

[0003] In the prior art, such as the patent with application number CN202122843046.8, the utility model relates to the field of gate valves, especially a high-strength gate valve, including a valve seat, a valve cover, a rotating handle, a threaded rod, a sliding rod, multiple springs, a sliding plate, a partition, a limit block, two auxiliary plates, two fixed plates and multiple rubber blocks; the inner wall of the valve seat is provided with a first groove, a first card groove, a connecting hole and two second grooves; the sliding plate is slidably connected to the inner walls of the two second grooves, and the sliding plate is connected to the inner walls of the first groove and the two second grooves through multiple springs; multiple rubber blocks are installed on the sliding plate; the valve cover is installed on the valve seat; the threaded rod passes through the valve cover and is connected to the limit block.

[0004] However, in actual use, the above patented gate valve has the following defects: poor anti-oxidation performance, which makes the gate valve easy to be oxidized and corroded, greatly affecting the service life of the gate valve. For this reason, we propose a high-strength gate valve. Utility Model Content

[0005] The purpose of the utility model is to provide a high-strength gate valve to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a high-strength gate valve, comprising a gate valve body, a first flange is fixedly connected to the left side of the gate valve body, a second flange is fixedly connected to the right side of the gate valve body, and a plurality of mounting holes are provided on the first flange and the second flange;

[0007] The gate valve body includes a base layer, a first reinforcement layer, a first anti-oxidation protective layer, a second reinforcement layer and a second anti-oxidation protective layer. The top of the base layer is fixedly connected to the first reinforcement layer, the top of the first reinforcement layer is fixedly connected to the first anti-oxidation protective layer, the bottom of the base layer is fixedly connected to the second reinforcement layer, and the bottom of the second reinforcement layer is fixedly connected to the second anti-oxidation protective layer.

[0008] Furthermore, the first reinforcement layer and the second reinforcement layer are both made of carbon fiber.

[0009] Furthermore, the first anti-oxidation protective layer includes a first polyphenylene sulfone resin coating and a first polyethylene terephthalate coating, and the first polyphenylene sulfone resin coating is fixedly connected to the top of the first reinforcement layer.

[0010] Furthermore, a first polyethylene terephthalate coating is fixedly connected to the top of the first polyphenylene sulfone resin coating, and the thickness of the first polyethylene terephthalate coating is greater than the thickness of the first polyphenylene sulfone resin coating.

[0011] Furthermore, the second anti-oxidation protective layer includes a second polyphenylene sulfone resin coating and a second polyethylene terephthalate coating, and the second polyphenylene sulfone resin coating is fixedly connected to the bottom of the second reinforcement layer.

[0012] Furthermore, a second polyethylene terephthalate coating is fixedly connected to the bottom of the second polyphenylene sulfone resin coating, and the thickness of the second polyethylene terephthalate coating is greater than the thickness of the second polyphenylene sulfone resin coating.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model has a strong anti-oxidation effect through the gate valve body, the base layer, the first reinforcement layer, the first anti-oxidation protective layer, the first polyphenylene sulfone resin coating, the first polyethylene terephthalate coating, the second reinforcement layer, the second anti-oxidation protective layer, the second polyphenylene sulfone resin coating, and the second polyethylene terephthalate coating, so that the gate valve is not easily oxidized and rusted, and the service life of the gate valve is greatly improved.

[0015] 2. By providing the first reinforcement layer and the second reinforcement layer, the strength of the gate valve body is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the layered structure of the gate valve body of the utility model;

[0018] Figure 3 This is a schematic diagram of the layered structure of the first anti-oxidation protective layer of the utility model;

[0019] Figure 4 This is a schematic diagram of the layered structure of the second anti-oxidation protective layer of the utility model.

[0020] In the figure: 1. gate valve body; 101. base layer; 102. first reinforcement layer; 103. first anti-oxidation protective layer; 1031. first polyphenylene sulfone resin coating; 1032. first polyethylene terephthalate coating; 104. second reinforcement layer; 105. second anti-oxidation protective layer; 1051. second polyphenylene sulfone resin coating; 1052. second polyethylene terephthalate coating; 2. first flange; 3. second flange. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it 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 indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1-4 A high-strength gate valve includes a gate valve body 1, a first flange 2 is fixedly connected to the left side of the gate valve body 1, a second flange 3 is fixedly connected to the right side of the gate valve body 1, and a plurality of mounting holes are provided on the first flange 2 and the second flange 3.

[0025] The gate valve body 1 includes a base layer 101, a first reinforcement layer 102, a first anti-oxidation protective layer 103, a second reinforcement layer 104 and a second anti-oxidation protective layer 105. The top of the base layer 101 is fixedly connected to the first reinforcement layer 102, the top of the first reinforcement layer 102 is fixedly connected to the first anti-oxidation protective layer 103, the bottom of the base layer 101 is fixedly connected to the second reinforcement layer 104, and the bottom of the second reinforcement layer 104 is fixedly connected to the second anti-oxidation protective layer 105.

[0026] Specifically, the first reinforcement layer 102 and the second reinforcement layer 104 are both made of carbon fibers.

[0027] In a specific implementation, the first anti-oxidation protection layer 103 includes a first polyphenylene sulfone resin coating 1031 and a first polyethylene terephthalate coating 1032 , and the first polyphenylene sulfone resin coating 1031 is fixedly connected to the top of the first reinforcement layer 102 .

[0028] Specifically, the first polyethylene terephthalate coating 1032 is fixedly connected to the top of the first polyphenylene sulfone resin coating 1031 , and the thickness of the first polyethylene terephthalate coating 1032 is greater than the thickness of the first polyphenylene sulfone resin coating 1031 .

[0029] In a specific implementation, the second anti-oxidation protective layer 105 includes a second polyphenylene sulfone resin coating 1051 and a second polyethylene terephthalate coating 1052 , and the second polyphenylene sulfone resin coating 1051 is fixedly connected to the bottom of the second reinforcement layer 104 .

[0030] Specifically, the second polyethylene terephthalate coating 1052 is fixedly connected to the bottom of the second polyphenylene sulfone resin coating 1051 , and the thickness of the second polyethylene terephthalate coating 1052 is greater than the thickness of the second polyphenylene sulfone resin coating 1051 .

[0031] In actual application: the utility model has a strong anti-oxidation effect through the gate valve body 1, the base layer 101, the first reinforcement layer 102, the first anti-oxidation protective layer 103, the first polyphenylene sulfone resin coating 1031, the first polyethylene terephthalate coating 1032, the second reinforcement layer 104, the second anti-oxidation protective layer 105, the second polyphenylene sulfone resin coating 1051, and the second polyethylene terephthalate coating 1052, which make the gate valve not easily oxidized and rusted, and greatly improve the service life of the gate valve.

[0032] All components in the present invention are universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods. At the same time, standard parts used in the present application documents can be purchased from the market, and each component in the present application document can be customized according to the description in the specification and drawings. The specific connection method of each component adopts conventional means such as mature bolts, rivets, welding, etc. in the prior art, and machinery, parts and equipment adopt conventional models in the prior art.

[0033] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the working principle, and the electrical connection between the electrical components should be completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The utility model mainly introduces the working principle and process, and no longer explains the electrical control.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high strength gate valve, characterized in that: The gate valve comprises a gate valve body (1), wherein a first flange (2) is fixedly connected to the left side of the gate valve body (1), and a second flange (3) is fixedly connected to the right side of the gate valve body (1), and a plurality of mounting holes are provided on the first flange (2) and the second flange (3); The gate valve body (1) comprises a base layer (101), a first reinforcement layer (102), a first anti-oxidation protective layer (103), a second reinforcement layer (104) and a second anti-oxidation protective layer (105); the top of the base layer (101) is fixedly connected to the first reinforcement layer (102); the top of the first reinforcement layer (102) is fixedly connected to the first anti-oxidation protective layer (103); the bottom of the base layer (101) is fixedly connected to the second reinforcement layer (104); and the bottom of the second reinforcement layer (104) is fixedly connected to the second anti-oxidation protective layer (105).

2. A high-strength gate valve according to claim 1, characterized in that: The first reinforcement layer (102) and the second reinforcement layer (104) are both made of carbon fibers.

3. A high strength gate valve according to claim 2, characterized in that: The first anti-oxidation protective layer (103) comprises a first polyphenylene sulfone resin coating (1031) and a first polyethylene terephthalate coating (1032), and the first polyphenylene sulfone resin coating (1031) is fixedly connected to the top of the first reinforcement layer (102).

4. A high strength gate valve according to claim 3, characterized in that: A first polyethylene terephthalate coating (1032) is fixedly connected to the top of the first polyphenylene sulfone resin coating (1031), and the thickness of the first polyethylene terephthalate coating (1032) is greater than the thickness of the first polyphenylene sulfone resin coating (1031).

5. A high strength gate valve according to claim 4, characterized in that: The second anti-oxidation protective layer (105) comprises a second polyphenylene sulfone resin coating (1051) and a second polyethylene terephthalate coating (1052), and the second polyphenylene sulfone resin coating (1051) is fixedly connected to the bottom of the second reinforcement layer (104).

6. A high strength gate valve according to claim 5, characterized in that: The bottom of the second polyphenylene sulfone resin coating (1051) is fixedly connected to a second polyethylene terephthalate coating (1052), and the thickness of the second polyethylene terephthalate coating (1052) is greater than the thickness of the second polyphenylene sulfone resin coating (1051).

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