Valve clack guide structure of low-temperature vacuum jacketed valve

Abstract

The utility model relates to a valve clack guide structure of a low-temperature vacuum jacketed valve, which comprises a valve body, a valve rod, a valve cover and a hand wheel, the valve cover is connected above the valve body, the valve rod is connected in the valve body, the upper end of the valve rod penetrates through the valve cover and is connected with the hand wheel, the lower end of the valve rod in the valve body is connected with a valve clack component, and the valve clack component is connected with the valve cover. The valve clack assembly comprises a hexagon nut, a guide cover, a sealing ring and a valve clack, the valve clack is connected to the valve rod, the guide cover is connected to the bottom of the valve clack, the sealing ring is connected between the guide cover and the valve clack assembly, and the sealing ring and the guide cover are locked on the valve clack through the hexagon nut. According to the utility model, better sealing performance can be realized.

Description

Technical Field

[0001] The utility model relates to a valve flap guide structure of a low-temperature vacuum jacket valve. Background Art

[0002] After searching, the patent: A new type of low-temperature vacuum valve (CN201220368546.9), including: a valve body, a ball, a valve seat, a valve stem vacuum net, a stuffing, a valve stem, a valve stem vacuum net core. The new type of low-temperature vacuum valve has a valve stem vacuum net core in the valve stem vacuum net. The valve stem vacuum net is composed of 4 valve stem vacuum net cores to avoid valve corrosion and leakage.

[0003] However, the disc of the low-temperature vacuum jacketed valve is not designed with a guide structure. Due to the accumulation of tolerances during the processing and assembly processes, the sealing surface of the disc and the valve body may be out of center during the valve switching process, resulting in a decrease in sealing performance.

[0004] In view of the above-mentioned defects, the designers have actively carried out research and innovation in order to create a new structure of low-temperature vacuum jacket valve disc guide structure to make it more valuable for industrial use. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a valve disc guide structure for a low-temperature vacuum jacket valve.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A valve disc guide structure of a low-temperature vacuum jacketed valve, comprising a valve body, a valve stem, a valve cover and a handwheel, wherein a valve cover is connected to the top of the valve body, a valve stem is connected to the inside of the valve body, the upper end of the valve stem passes through the valve cover and is connected to the handwheel, a valve disc assembly is connected to the lower end of the valve stem in the valve body, the valve disc assembly comprises a hexagonal nut, a guide cover, a sealing ring and a valve disc, the valve disc is connected to the valve stem, a guide cover is connected to the bottom of the valve disc, a sealing ring is connected between the guide cover and the valve disc assembly, and the sealing ring and the guide cover are locked on the valve disc by a hexagonal nut.

[0008] Preferably, in the valve disc guide structure of the low-temperature vacuum jacketed valve, the guide cover is provided with a symmetrical hollow structure, so that the guide cover has a "mountain"-shaped structure.

[0009] Preferably, in the valve disc guide structure of the low-temperature vacuum jacketed valve, a guiding straight edge structure is provided at the upper end of the outer side edge of the guide cover of the "mountain" shaped structure.

[0010] Preferably, in the valve disc guide structure of the low-temperature vacuum jacketed valve, a guide bevel structure is provided at the lower end of the outer side edge of the guide cover of the "mountain" shaped structure.

[0011] Preferably, in the valve disc guide structure of the cryogenic vacuum jacketed valve, the guide bevel angle is 10° to 15°.

[0012] Preferably, in the valve disc guide structure of the cryogenic vacuum jacketed valve, the guide bevel angle is 10°.

[0013] By means of the above solution, the utility model has at least the following advantages:

[0014] The utility model has a guide cover with a guide straight edge to cooperate with the flow channel of the valve body of the valve body assembly to achieve the positioning of the seal, which can better achieve sealing; secondly, the guide cover straight edge is designed as a hollow structure to ensure the flow rate when the valve is opened; finally, the guide cover guide straight edge is designed as an oblique angle to make it easier for the guide cover to cooperate with the valve body flow channel during the valve opening and closing process, so as to better position the seal and achieve a better sealing effect. The guide cover of this structure is easy to disassemble and repair.

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a partial enlarged view of A;

[0019] Figure 3 It is a structural schematic diagram of the guide cover of the utility model;

[0020] Figure 4 yes Figure 3 sectional view of . DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0023] Example

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a valve disc guide structure of a low-temperature vacuum jacketed valve includes a valve body 5, a valve stem 6, a valve cover 7 and a handwheel 8, wherein the valve cover 7 is connected to the top of the valve body 5, the valve stem 6 is connected inside the valve body 5, the upper end of the valve stem 6 passes through the valve cover 7 and is connected to the handwheel 8, the lower end of the valve stem 6 in the valve body 5 is connected to a valve disc assembly, the valve disc assembly includes a hexagonal nut 1, a guide cover 2, a sealing ring 3 and a valve disc 4, the valve disc 4 is connected to the valve stem 6, the bottom of the valve disc 4 is connected to the guide cover 2, a sealing ring 3 is connected between the guide cover 2 and the valve disc assembly, and the sealing ring 3 and the guide cover 2 are locked on the valve disc 4 by the hexagonal nut 1.

[0025] The guide cover 2 in the utility model is provided with a symmetrical hollow structure, so that the guide cover 2 is in a "mountain" shape; the upper end of the outer side of the guide cover 2 in the "mountain" shape is provided with a guiding straight edge structure; the lower end of the outer side of the guide cover 2 in the "mountain" shape is provided with a guiding oblique angle structure.

[0026] The guide straight edge of the guide cover 2 is used to cooperate with the flow channel of the valve body to realize the positioning of the seal, which can better achieve sealing; secondly, the guide cover is provided with a hollow structure to ensure the flow rate when the valve is opened; the guide cover 2 is designed with an angled structure, and the angle of the guide angle is 10° to 15°, wherein the angle of the guide angle is 10°, which can make the guide cover more easily cooperate with the flow channel of the valve body during the opening and closing process of the valve, thereby better positioning the seal and achieving a better sealing effect

[0027] The working principle of the utility model is as follows:

[0028] During the specific work, first install the sealing ring on the valve disc, then use the hexagonal nut to fix the guide cover on the valve disc (note that the guide cover must press the seal), and then assemble the valve disc and the valve stem together to form the valve stem, and then install the valve stem in the valve body assembly to achieve quick installation.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of this application, it should be noted that the terms "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing this application 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 this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or vertical, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A valve disc guide structure for a cryogenic vacuum jacketed valve, characterized in that: The valve body (5) comprises a valve cover (7), a valve stem (6), a valve cap (7) and a hand wheel (8), wherein the valve cover (7) is connected to the top of the valve body (5), the valve stem (6) is connected inside the valve body (5), the upper end of the valve stem (6) passes through the valve cover (7) and is connected to the hand wheel (8), the lower end of the valve stem (6) inside the valve body (5) is connected to a valve flap assembly, the valve flap assembly comprises a hexagonal nut (1), a guide cover (2), a sealing ring (3) and a valve flap (4), the valve flap (4) is connected to the valve stem (6), the bottom of the valve flap (4) is connected to the guide cover (2), a sealing ring (3) is connected between the guide cover (2) and the valve flap assembly, and the sealing ring (3) and the guide cover (2) are locked on the valve flap (4) by the hexagonal nut (1); The guide cover (2) is provided with a symmetrical hollow structure, so that the guide cover (2) presents a "mountain"-shaped structure; a guiding straight edge structure is provided at the upper end of the outer side edge of the guide cover (2) of the "mountain"-shaped structure.

2. A valve flap guide structure for a cryogenic vacuum jacket valve according to claim 1, characterized in that: A guiding bevel structure is provided at the lower end of the outer side of the guide cover (2) of the "mountain" shaped structure.

3. A valve flap guide structure for a cryogenic vacuum jacket valve according to claim 2, characterized in that: The angle of the guide bevel is 10° to 15°.

4. A valve flap guide structure for a cryogenic vacuum jacket valve according to claim 3, characterized in that: The angle of the guide bevel is 10°.

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