CN105422884A - High ultra-vacuum special electric gate valve - Google Patents

Abstract

The invention discloses a high-ultra-vacuum special electric plug-in valve, which relates to a valve. It includes valve body, sub-plate, connecting key, first bolt, main board, connecting rod, valve cover, electric head, gearbox, transmission key, sleeve and transmission shaft. There are connection keys and first bolts, guide grooves corresponding to the connection keys and the first bolts are provided on the sub-board, the main board and the sub-board are matched, the first dust removal ring and the first sealing ring are provided on the main board, and the sub-board There is a second dust removal ring and a second sealing ring on the top. The middle contact surface between the main board and the sub-board is a wedge surface. A compression spring is arranged between the main board and the sub-board. The upper end of the main board is connected to the transmission shaft through a connecting rod. The transmission shaft and the installation The transmission key of the gearbox is connected with the transmission key, and the gearbox is connected with the electric head. The invention has long service life, excellent sealing effect, good vacuum isolation effect, strong practicability, and is easy to popularize and use.

Description

High ultra-vacuum special electric plug-in valve

technical field

The invention relates to a valve, in particular to a high-ultra-vacuum special electric plug-in valve.

Background technique

Special valves are widely used in military systems and equipment as well as high-end scientific research devices. Although the components are small, they play a huge role. They are key components that restrict the manufacturing of military equipment and the development of high-end scientific research devices in my country; High-vacuum valves are prone to wear and tear during actual use, resulting in a greatly reduced service life, and the sealing effect between the internal connection surfaces of the valve body is not good, which is prone to leakage problems, especially for unclean pipeline media. The valve body with commercial technology cannot guarantee high ultra-vacuum degree, which affects its use effect. Based on this, it is still necessary to design and develop a high-ultra-vacuum special electric gate valve.

Contents of the invention

Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a high-ultra-vacuum special electric gate valve, which has a reasonable structural design, long service life, excellent sealing effect, good vacuum isolation effect, strong practicability, and is easy to popularize and use. In particular, it can be applied to unclean pipeline media, while ensuring the use requirements of high ultra-vacuum degree.

In order to achieve the above object, the present invention is achieved through the following technical solutions: a high-ultra-vacuum special electric plug-in valve, including a valve body, an auxiliary plate, a connecting key, a first bolt, a main board, a connecting rod, a valve cover, an electric head, a variable speed Box, transmission key, sleeve and transmission shaft, sub-plate and main board are installed in the valve body, connecting key and first bolt are arranged on the main board, guide groove corresponding to connecting key and first bolt is provided on the sub-plate, The main board is matched with the auxiliary board. The upper end of the main board is connected with the drive shaft through the connecting rod. Inside the barrel, the sleeve and the valve body are fixedly connected through the valve cover.

As a preference, a first dust removal ring and a first sealing ring are provided between the main board and the valve body, a second dust removal ring and a second sealing ring are provided between the sub-board and the valve body, and the middle contact between the main board and the sub-board The surface is a wedge surface, which is more conducive to sealing; a compression spring is arranged between the main plate and the sub-plate, and the spring return force of the compression spring can effectively reduce the wear of the sealing surface.

As a preference, two sets of O-rings are sealed between the connecting rod and the valve cover to prevent internal and external leakage.

Preferably, the valve cover is fixedly connected to the valve body and the sleeve through the second bolt and the third bolt respectively, a sealing gasket is also provided between the valve cover and the valve body, and the second bolt and the third bolt are respectively provided with The elastic washer, the first spring washer, and the sleeve are fixed on the gearbox through the fourth bolt, and the second spring washer is arranged on the fourth bolt.

Beneficial effects of the present invention: (1) The isolation vacuum effect is good, and a high ultra-vacuum degree can still be guaranteed for unclean pipeline media (leakage rate is better than 1×10 ^-7 Pa.m ³ /s, and the highest level can reach 10 ^-9 Pa.m ³ /s);

(2) The sealing effect is good, the sealing surface wears less, and the service life is longer;

(3) Smooth movement, no impact, low noise, ensuring the use effect.

Description of drawings

The present invention is described in detail below in conjunction with accompanying drawing and specific embodiment;

Fig. 1 is a structural representation of the present invention;

Figure 2 is a side view of the present invention.

detailed description

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

Referring to Figures 1-2, this specific implementation mode adopts the following technical solutions: a high-ultra-vacuum special electric plug-in valve, including a valve body 1, an auxiliary plate 2, a connecting key 5, a first bolt 6, a main plate 7, a connecting rod 9, and a valve cover 14. Electric head 17, gearbox 18, transmission key 21, sleeve 22 and transmission shaft 23, sub-board 2 and main board 7 are installed in valve body 1, main board 7 cooperates with sub-board 2, and the upper end of main board 7 passes through the connecting rod 9 is connected with the transmission shaft 23, the transmission shaft 23 is connected with the transmission key 21 installed in the gearbox 18, the gearbox 18 is connected with the electric head 17, the gearbox 18 is fixed on the sleeve 22, and the transmission shaft 23 is arranged on the sleeve 22 Inside, the sleeve 22 is fixedly connected to the valve body 1 through the valve cover 14 .

It is worth noting that the first dust removal ring 3 and the first sealing ring 4 are arranged between the main board 7 and the valve body 1, and the second dust removal ring 24 and the second sealing ring are arranged between the sub-board 2 and the valve body 1. Ring 25, a compression spring 8 is arranged between the main board 7 and the sub-board 2.

In addition, the sealing between the connecting rod 9 and the valve cover 14 is realized by two sets of O-rings 13 to prevent internal and external leakage; , the sleeve 22 is fixedly connected, a gasket 12 is also provided between the valve cover 14 and the valve body 1, an elastic washer 11 and a first spring washer 16 are respectively provided on the second bolt 10 and the third bolt 15, and the sleeve 22 passes through The fourth bolt 19 is fixed on the gearbox 18 , and the second spring washer 20 is arranged on the fourth bolt 19 .

In this specific embodiment, the electric head 17 and the gearbox 18 are used in combination, so that the transmission shaft 23 is always rotated at a low speed, and the connecting rod 9, the main board 7, and the sub-board 2 are driven to move up and down in a straight line without impact and low noise. The connection key 5 and the first bolt 6, and the sub-board 2 are provided with guide grooves corresponding to the connection key 5 and the first bolt 6, which meet the sliding change of the closed position. When the main board 7 is opened, the main board 7 can drive the sub-board 2 to move together. The compression spring 8 set between 7 and the sub-plate 2, its spring return force changes the wedge-shaped position when the valve is opened, the axial dimension becomes smaller, the sealing surface is disengaged, the opening force is small, the sealing surface wears less, and the service life is long; The middle contact surface between the main plate 7 and the sub-plate 2 is a wedge surface. When the lower end of the sub-plate 2 reaches the limit surface of the valve body 1 when it is closed, the wedge-shaped position changes, the axial dimension becomes larger, and the extrusion force of the sealing surface becomes larger, which is more conducive to sealing; And the first dust removal ring 3 provided on the main board 7 and the second dust removal ring 24 provided on the sub-board 2 clean the sealing surface first when opening and closing the valve, even for unclean pipeline media, still can ensure high ultra-vacuum degree.

The specific embodiment has the advantages of compact structure, good flexibility, excellent sealing effect, good effect of isolating vacuum, and has broad market application prospects.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Various changes and improvements, such as different diameter sizes, valve plate materials, control modes, working modes (electric or manual), etc., all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. High ultra-vacuum special electric plug-in valve, characterized in that it includes valve body (1), sub-plate (2), connecting key (5), first bolt (6), main board (7), connecting rod (9) , valve cover (14), electric head (17), gearbox (18), transmission key (21), sleeve (22) and transmission shaft (23), and the sub-plate (2) is installed in the valve body (1) And the main board (7), the main board (7) is provided with the connection key (5) and the first bolt (6), and the sub-board (2) is provided with the connection key (5), the first bolt (6) corresponding The guide groove, the main board (7) is matched with the sub-board (2), the upper end of the main board (7) is connected with the drive shaft (23) through the connecting rod (9), and the drive shaft (23) is connected with the drive shaft (23) installed in the gearbox (18) Key (21) transmission connection, gearbox (18) is connected with motor head (17), and motor head (17) and gearbox (18) are used in combination to make transmission shaft (23) rotate at low speed all the time, driving connecting rod (9) , the main board (7), and the sub-board (2) move up and down in a straight line smoothly, the gearbox (18) is fixed on the sleeve (22), the transmission shaft (23) is arranged inside the sleeve (22), and the sleeve (22) It is fixedly connected with the valve body (1) through a valve cover (14). 2. The high-ultra-vacuum special electric plug-in valve according to claim 1, characterized in that, a first dust removal ring (3) and a first sealing ring are arranged between the main board (7) and the valve body (1) (4), the second dust removal ring (24) and the second sealing ring (25) are arranged between the sub-plate (2) and the valve body (1), the first dust removal ring (3), the second dust removal ring (24) Clean the sealing surface first when opening and closing the valve, even for unclean pipeline media, it can still guarantee high ultra-vacuum degree. 3. The high-ultra-vacuum special electric plug-in valve according to claim 1, characterized in that, the middle contact surface between the main board (7) and the sub-board (2) is a wedge surface, and the lower end of the sub-board (2) is closed when it is closed. When it reaches the limit surface of the valve body (1), the wedge-shaped position changes, the axial dimension becomes larger, and the extrusion force of the sealing surface becomes larger, which is more conducive to sealing. 4. The high ultra-vacuum special electric plug-in valve according to claim 1, characterized in that, a compression spring (8) is arranged between the main board (7) and the sub-board (2), and when the valve is opened, the compression spring (8) The spring return force of the spring (8) causes the wedge-shaped position to change, the axial dimension to become smaller, the sealing surface to disengage, the opening force to be small, the sealing surface to wear less, and the service life to be long. 5. The high-ultra-vacuum special electric gate valve according to claim 1, characterized in that two sets of O-rings (13) are sealed between the connecting rod (9) and the valve cover (14) to prevent Leakage inside and out. 6. The high-ultra-vacuum special electric gate valve according to claim 1, characterized in that, the valve cover (14) is connected to the valve body (1) through the second bolt (10), the third bolt (15) and the valve body (1) respectively. , the sleeve (22) is fixedly connected, a gasket (12) is also provided between the bonnet (14) and the valve body (1), and elastic washers are respectively provided on the second bolt (10) and the third bolt (15) (11), the first spring washer (16), the sleeve (22) is fixed on the gearbox (18) by the fourth bolt (19), and the second spring washer (20) is arranged on the fourth bolt (19).