Stop valve for vacuum tube

Abstract

The stop valve comprises a valve body, the upper end of the valve body is connected with a valve cover matched with the valve body, a valve clack is connected in the valve body, the valve clack is connected with one end of a valve rod, the other side of the valve rod sequentially penetrates through the valve body and the valve cover to be connected with a hand wheel, the valve clack is of a conical structure, and the valve cover is of a conical structure. A sealing structure is formed by the lower end of the valve clack of the conical structure and a communicating opening in the valve body, a connecting groove is formed in the upper end of the valve clack of the conical structure, and a connecting piece used for positioning, connecting and fixing a valve rod is connected into the connecting groove. The device is convenient to mount, dismount and replace, and is simple to maintain.

Description

Technical Field

[0001] This utility model relates to a shut-off valve for vacuum tubes. Background Technology

[0002] Currently, some gate valves on the market have poor sealing performance. After prolonged use, the seals are prone to wear, making it difficult to maintain the vacuum level of the vacuum system and affecting the normal operation of the equipment. In addition, some gate valves are cumbersome to operate, requiring operators to spend a lot of time and effort to open and close them, which reduces work efficiency.

[0003] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a new type of vacuum tube shut-off valve with greater industrial application value. Utility Model Content

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a shut-off valve for vacuum tubes.

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

[0006] A shut-off valve for a vacuum tube includes a valve body, a matching valve cover connected to the upper end of the valve body, a valve disc connected to the valve body, one end of the valve disc being connected to a valve stem, and the other side of the valve stem passing through the valve body and the valve cover sequentially and connected to a handwheel. The valve disc has a conical structure, and the lower end of the conical valve disc forms a sealing structure with a through port in the valve body. The upper end of the conical valve disc has a connecting groove, and a connector for positioning and fixing the valve stem is connected in the connecting groove.

[0007] Preferably, the vacuum tube shut-off valve is characterized in that a guide sleeve is fitted on the valve stem located in the valve body.

[0008] Preferably, in the aforementioned vacuum tube shut-off valve, the connecting component is a pin.

[0009] Preferably, in the vacuum tube shut-off valve, the lower end of the valve stem is provided with a protruding structure that matches the connecting groove of the connecting valve disc.

[0010] Preferably, in the aforementioned vacuum tube shut-off valve, the protruding structure is a T-shaped structure.

[0011] Preferably, in the vacuum tube shut-off valve, the protruding structure of the valve stem is embedded in the connecting groove.

[0012] By means of the above solution, this utility model has at least the following advantages:

[0013] This invention employs a conical valve disc for positioning with the valve body assembly and valve stem, resulting in better sealing. Secondly, a raised structure at the lower end of the valve stem mates with the groove connecting the valve disc. When assembling the valve stem and valve disc, the raised structure at the lower end of the valve stem is inserted into the connecting groove at the top of the valve disc, achieving initial positioning and a better sealing effect. This design simplifies valve disc disassembly, assembly, and maintenance.

[0014] 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

[0015] 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.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the valve disc structure of this utility model. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] Example

[0021] like Figure 1 and Figure 2As shown, a shut-off valve for a vacuum tube includes a valve body 1. The upper end of the valve body 1 is connected to a matching valve cover 3. A valve disc 7 is connected inside the valve body 1. The valve disc 7 is connected to one end of a valve stem 5. The other side of the valve stem 5 passes through the valve body and the valve cover in sequence and is connected to a handwheel 4. The valve disc 7 has a conical structure. The lower end of the conical valve disc 7 forms a sealing structure with the guide port inside the valve body 1. A connecting groove 8 is provided at the upper end of the conical valve disc 7. A connector 6 for positioning and fixing the valve stem 5 is connected inside the connecting groove 8. A guide sleeve 2 is fitted on the valve stem 5 located inside the valve body 1.

[0022] The connecting component is a pin, or it can be a fastener known to those skilled in the art, such as a bolt.

[0023] The valve disc with a conical structure used in this invention can effectively cooperate with the valve body and valve stem for positioning, and can better achieve the sealing of the valve body.

[0024] Example 1

[0025] Based on the embodiment, the valve stem and valve disc can be quickly positioned and connected, and can also be quickly replaced and accurately installed, ensuring the sealing performance after replacement. The lower end of the valve stem 5 is provided with a protruding structure that matches the connecting groove of the connecting valve disc. The protruding structure is T-shaped, and the protruding structure of the valve stem 5 is embedded in the connecting groove 8.

[0026] In actual operation, a protruding structure adapted to the connecting groove of the valve disc is provided at the lower end of the valve stem. When the valve stem and valve disc are assembled, the protruding structure at the lower end of the valve stem is embedded into the connecting groove at the top of the valve disc to initially position the two. Then, it is fixed by the pin at the top of the valve disc. The pin is perpendicular to the connecting surface of the valve disc and the valve stem, which makes it easier to replace later and achieves a better sealing effect.

[0027] The structure and installation of this utility model are as follows: First, the guide sleeve 2 is installed on the valve stem 5, and the valve disc 7 is installed in the connecting groove at the top of the valve stem 5. Then, the pin 6 is fixed in the connecting groove of the valve disc 7. Subsequently, the valve stem 5 and the valve disc 7 are installed in the valve body assembly 1. Finally, the valve cover assembly 3 and the handwheel 4 are installed.

[0028] The specific operation of the vacuum tube shut-off valve of this utility model is known to those skilled in the art and will not be described in detail here.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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 shut-off valve for a vacuum tube, comprising a valve body (1), wherein a matching valve cover (3) is connected to the upper end of the valve body (1), a valve disc (7) is connected inside the valve body (1), the valve disc (7) is connected to one end of a valve stem (5), and the other side of the valve stem (5) passes through the valve body and the valve cover in sequence and is connected to a handwheel (4), characterized in that: The valve disc (7) has a conical structure. The lower end of the conical valve disc (7) forms a sealing structure with the guide port in the valve body (1). The upper end of the conical valve disc (7) is provided with a connecting groove (8). A connecting piece (6) for positioning and connecting and fixing the valve stem (5) is connected in the connecting groove (8).

2. The shut-off valve for a vacuum tube according to claim 1, characterized in that: A guide sleeve (2) is fitted on the valve stem (5) located inside the valve body (1).

3. A shut-off valve for a vacuum tube according to claim 1, characterized in that: The connecting component is a pin.

4. A shut-off valve for a vacuum tube according to claim 1 or 2, characterized in that: The lower end of the valve stem (5) is provided with a protruding structure that matches the connecting groove of the connecting valve disc.

5. A shut-off valve for a vacuum tube according to claim 4, characterized in that: The protruding structure is T-shaped.

6. A shut-off valve for a vacuum tube according to claim 4, characterized in that: The protruding structure of the valve stem (5) is embedded in the connecting groove (8).

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