Valve clack gasket structure of ultralow-temperature valve

Abstract

The utility model relates to a valve clack gasket structure of an ultra-low temperature valve, which comprises a valve clack, a lower sealing gasket is connected below the valve clack, the lower sealing gasket is of a trapezoid structure, the height of the lower sealing gasket ranges from 3mm to 5mm, a gasket is connected below the valve clack, the thickness of the gasket ranges from 6mm to 10mm, and the lower sealing gasket is of a trapezoid structure. A connecting column is arranged below the valve clack, the bottom of the connecting column enables the gasket and the lower sealing gasket to be tightly pressed on the valve clack through stamping, and a riveting structure is arranged above the valve clack. According to the utility model, the rapid installation can be improved while the sealing is realized.

Description

Technical Field

[0001] This utility model relates to a valve disc gasket structure for an ultra-low temperature valve. Background Technology

[0002] Currently, the cryogenic valves on the market, according to a search, include the patent for a cryogenic ball valve (CN201510862509.1), which comprises: a valve body, a ball disposed within the valve body and a valve stem connected to the upper end of the ball, a long neck cover disposed on the outer side of the valve stem at the upper end of the valve body, an inlet valve cover and an outlet valve cover disposed on both sides of the valve body, an inlet valve seat ring disposed between the inlet valve cover and the ball, an outlet valve seat ring disposed between the outlet valve cover and the ball, an inlet channel disposed within the inlet valve cover and the inlet valve seat ring, an outlet channel disposed within the outlet valve cover and the outlet valve seat ring, a central cavity channel disposed within the ball communicating with the inlet and outlet channels, a sealing packing disposed between the upper end of the long neck cover and the valve stem, and a pressure cap that cooperates with the sealing packing disposed between the long neck cover and the valve stem at the upper end of the sealing packing. However, the valve disc structure described above is mostly fixed by a hexagonal nut and cotter pin (e.g., Figure 1 As shown in the figure, during use, the alternating high and low temperature conditions can easily cause loosening, affecting the sealing performance.

[0003] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a new type of cryogenic valve disc gasket structure, which would make it more valuable for industrial applications. Utility Model Content

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a valve disc gasket structure for cryogenic valves.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cryogenic valve disc gasket structure includes a valve disc, a lower sealing gasket connected below the valve disc, the lower sealing gasket having a trapezoidal structure and a height of 3 mm to 5 mm, a gasket connected below the valve disc having a thickness of 6 mm to 10 mm, a connecting post provided below the valve disc, the bottom of the connecting post being pressed to press the gasket and the lower sealing gasket onto the valve disc, and a riveting structure provided above the valve disc.

[0007] Preferably, in the aforementioned cryogenic valve disc gasket structure, the thickness of the lower sealing gasket is 3 mm.

[0008] Preferably, in the cryogenic valve disc gasket structure, the gasket thickness is 8 mm.

[0009] Preferably, in the aforementioned cryogenic valve disc gasket structure, the riveting structure above the valve disc is connected to the valve body by stamping.

[0010] By means of the above solution, this utility model has at least the following advantages:

[0011] The valve disc of this invention is installed using a stamped assembly structure, which reduces the number of installation steps. Furthermore, the valve disc top features a riveted structure design, which, after stamping, facilitates the fixing of the sealing element, ensuring both a secure connection and improved sealing performance.

[0012] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the existing structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0018] Example

[0019] like Figure 2As shown, a cryogenic valve disc gasket structure includes a valve disc 3, characterized in that: a lower sealing gasket 2 is connected below the valve disc 3, the lower sealing gasket 2 has a trapezoidal structure and a height of 3 mm to 5 mm; a gasket 1 is connected below the valve disc 3, the gasket 1 has a thickness of 6 mm to 10 mm; a connecting post 4 is provided below the valve disc 3, and the bottom of the connecting post 4 is pressed to press the gasket 1 and the lower sealing gasket 2 onto the valve disc 3; and a riveting structure 5 is provided above the valve disc 3.

[0020] In this invention, the thickness of the lower sealing gasket 2 is 3 mm, and the thickness of the gasket 1 is 8 mm. This ensures a secure seal while also improving stability.

[0021] The riveting structure 5 above the valve disc 3 in this invention is connected to the valve body by stamping, which is beneficial for sealing.

[0022] The working principle of this utility model is as follows:

[0023] The specific operation is as follows: First, install the sealing gasket on the valve disc, then press the gasket and the lower sealing gasket onto the valve disc using a punch press, and then install the valve disc onto the valve body by riveting.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this application, it should be noted that the terms "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or vertical, but rather that they can be slightly tilted. For example, "horizontal" simply 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.

[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A cryogenic valve disc gasket structure, comprising a valve disc (3), characterized in that: A lower sealing gasket (2) is connected below the valve disc (3). The lower sealing gasket (2) has a trapezoidal structure and a height of 3 mm to 5 mm. A gasket (1) is connected below the valve disc (3). The thickness of the gasket (1) is 6 mm to 10 mm. A connecting post (4) is provided below the valve disc (3). The bottom of the connecting post (4) is pressed to press the gasket (1) and the lower sealing gasket (2) onto the valve disc (3). A riveting structure (5) is provided above the valve disc (3).

2. The cryogenic valve disc gasket structure according to claim 1, characterized in that: The thickness of the lower sealing gasket (2) is 3 mm.

3. The cryogenic valve disc gasket structure according to claim 1, characterized in that: The thickness of the gasket (1) is 8 mm.

4. The cryogenic valve disc gasket structure according to claim 1, characterized in that: The riveting structure (5) above the valve disc (3) is connected to the valve body by stamping.

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