CN219888873U

CN219888873U - High vacuum valve body bellows base

Info

Publication number: CN219888873U
Application number: CN202321494176.8U
Authority: CN
Inventors: 刘阳; 胡能; 朱永超
Original assignee: Changsha Huashi Semiconductor Co ltd
Current assignee: Changsha Huashi Semiconductor Co ltd
Priority date: 2023-06-13
Filing date: 2023-06-13
Publication date: 2023-10-24
Anticipated expiration: 2033-06-13

Abstract

The utility model provides a high vacuum valve body bellows base, relates to high vacuum valve technical field, includes the base, the top welding of base has the second flange, and the top welding of second flange has the bellows, and the top welding of bellows has first flange, the middle part threaded connection of base has the valve rod, is close to the position that the bottom is fixed with spring spacer on the valve rod, and this high vacuum valve body bellows base, its base and valve rod assemble through the mode of screw thread and are connected, can reduce the degree of difficulty of part design processing, the cost is reduced, and it is more convenient to divide into two segmentation messenger maintenance or change simultaneously, and its valve rod and spring spacer integrated into one piece set up to can fix spring spacer, ensure that the spring can not be along with spring spacer skew in the switching motion process, can avoid the spring to incline at compression set's in-process and lead to the whole stroke of angle valve to shorten the skew.

Description

High vacuum valve body bellows base

Technical Field

The utility model relates to the technical field of high-vacuum valves, in particular to a high-vacuum valve body corrugated pipe base.

Background

The bellows is used as a packing-free sealing isolation element of a high-vacuum valve rod, valves such as a stop valve, a throttle valve, a pressure regulating valve and the like are all required to be used as the bellows, and the bellows and the valve rod axially displace and reset together in the working process of the valve, and meanwhile, the bellows and the valve rod are required to bear the pressure of fluid and keep absolute sealing. The valve rod base needs compression and resetting of the bearing spring, and is very important to be connected and matched with the corrugated pipe;

the following problems exist in the use process:

1. the valve rod with the upper section structure belongs to a movable part and is connected with the inside of the cylinder body, the gap between the valve rod and the upper section structure is small, friction is not generated in the process of opening and closing the valve rod up and down, so that the valve rod at the upper end belongs to a vulnerable part, and the valve rod at the upper end is integrally formed or welded and formed, and is inconvenient to disassemble and maintain;

2. the spring gasket is required to be placed above the conventional base, the spring gasket is fixed without a device, the diameter of the spring is larger than the diameter of the valve rod in consideration of the compression capability of the spring, so that the diameter of the spring gasket is also larger than the diameter of the valve rod, the spring is easy to deviate from the central shaft in the expansion process of the spring for a long time, and the spring is rubbed with the valve rod or the stress is uneven to influence the stroke of the valve body.

Disclosure of Invention

The utility model aims to overcome the existing defects, and provides the high-vacuum valve body corrugated pipe base, wherein the base and the valve rod are assembled and connected in a threaded manner, so that the difficulty of part design processing can be reduced, the cost is reduced, the high-vacuum valve body corrugated pipe base is divided into two sections to facilitate maintenance or replacement, and the valve rod and the spring gasket are integrally formed, so that the spring gasket can be fixed, the spring cannot deviate along with the spring gasket in the switching movement process, the whole stroke of the angle valve is shortened and deviated due to the inclination of the spring in the compression deformation process can be avoided, and the problems in the prior art can be effectively solved.

In order to achieve the aim of the utility model, the utility model adopts the following technical scheme:

the utility model provides a high vacuum valve body bellows base, includes the base, the top welding of base has the second flange, and the top welding of second flange has the bellows, and the top welding of bellows has first flange, the middle part threaded connection of base has the valve rod, and the position that is close to the bottom on the valve rod is fixed with spring spacer.

Further, the boss on the base is arranged at the same level as the height of the second flange, and the spring gasket is placed on a plane formed by the boss on the base and the second flange.

Further, the valve rod and the spring washer are integrally formed.

Compared with the prior art, the utility model has the beneficial effects that: this high vacuum valve body bellows base has following benefit:

1. the base and the valve rod are assembled and connected in a threaded mode, so that the difficulty of part design processing can be reduced, the cost is reduced, and the base and the valve rod are divided into two sections to facilitate maintenance or replacement.

2. Its valve rod and spring gasket integrated into one piece set up to can fix spring gasket, ensure that the spring can not be along with spring gasket skew in the switch motion process, the boss on its base sets up with the high parallel and level of second flange, can place the spring gasket level like this on the plane that base and second flange formed, thereby avoid the spring to incline at compression set's in-process and lead to the whole stroke of angle valve to shorten the skew.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of a three-dimensional partial bottom structure of the present utility model;

fig. 3 is a schematic view of a three-dimensional partial inner side structure of the present utility model.

In the figure: 1 first flange, 2 bellows, 3 second flange, 4 valve rod, 5 bases, 6 spring washers.

Description of the embodiments

The utility model will be explained in detail by the following examples, the purpose of which is to be disclosed in order to protect all technical improvements within the scope of the utility model.

Referring to fig. 1-3, the present embodiment provides a technical solution: the utility model provides a high vacuum valve body bellows base, including base 5, the top welding of base 5 has second flange 3, the top welding of second flange 3 has bellows 2, and the top welding of bellows 2 has first flange 1, the middle part threaded connection of base 5 has valve rod 4, thereby make the upper and lower end and the base 5 close fit of first flange 1 and second flange 3 and bellows 2, thereby make the inside high vacuum environment that keeps of bellows 2, reach 1 x 10-13Pam3/s vacuum atmospheric pressure environment, the valve rod 4 of protection inside does not receive outside wearing and tearing and corrode, the position that is close to the bottom on valve rod 4 is fixed with spring gasket 6, its base 5 and valve rod 4 are assembled through the mode of screw thread and are connected, the degree of difficulty of part design processing can be reduced, the cost is reduced, it is more convenient to divide into two segmentation messenger's maintenance or change simultaneously.

The boss on the base 5 and the height parallel and level of the second flange 3 are arranged, and the spring gasket 6 is placed on a plane formed by the boss on the base 5 and the second flange 3, so that the spring gasket 6 can be placed smoothly, and the whole stroke of the angle valve is shortened and offset caused by the inclination of the spring in the compression deformation process is avoided.

The valve rod 4 and the spring gasket 6 are integrally formed, so that the spring gasket 6 can be fixed, and the spring is ensured not to deviate along with the spring gasket 6 in the switch movement process.

The working principle of the high-vacuum valve body corrugated pipe base provided by the utility model is as follows: the valve rod 4 is in threaded locking with the base 5, so that the first flange 1 and the second flange 3 are tightly matched with the upper end and the lower end of the corrugated pipe 2 and the base 5, the inside of the corrugated pipe 2 is kept in a high vacuum environment, the vacuum air pressure environment of 1X 10 < -13 > Pam3/s is achieved, the valve rod 4 in the inside is protected from external abrasion and corrosion, a boss on the base 5 is arranged in a height parallel and level with the second flange 3, and therefore the spring gasket 6 can be flatly placed on a plane formed by the base 5 and the second flange 3, and the phenomenon that the whole stroke of the angle valve is shortened and offset due to the fact that the spring is inclined in the compression deformation process is avoided.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a high vacuum valve body bellows base, includes base (5), its characterized in that: the top welding of base (5) has second flange (3), and the top welding of second flange (3) has bellows (2), and the top welding of bellows (2) has first flange (1), the middle part threaded connection of base (5) has valve rod (4), and the position that is close to the bottom on valve rod (4) is fixed with spring gasket (6).

2. The high vacuum valve body bellows base of claim 1, wherein: the boss on the base (5) is arranged at the same level as the height of the second flange (3), and the spring gasket (6) is placed on a plane formed by the boss on the base (5) and the second flange (3).

3. The high vacuum valve body bellows base of claim 1, wherein: the valve rod (4) and the spring gasket (6) are integrally formed.