CN212273112U

CN212273112U - Ball valve for butting high-vacuum equipment

Info

Publication number: CN212273112U
Application number: CN202020410565.8U
Authority: CN
Inventors: 陈栋; 张政; 郭云飞; 黄勇; 衡潘
Original assignee: Shanghai Weina International Trade Co ltd
Current assignee: Shanghai Weina International Trade Co ltd
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2021-01-01
Anticipated expiration: 2030-03-26

Abstract

The utility model discloses a ball valve for docking high vacuum apparatus belongs to ball valve technical field. It includes the valve body, the rotation axis, spheroid and end cover, and the spheroid sets up in the inside of valve body, and the rotation axis is rotated with the top of valve body and is connected, and the bottom of rotation axis runs through the inside that extends to the valve body, with spheroidal top fixed connection, spheroidal bottom is passed through the connecting axle and the interior bottom rotation of bearing and valve body is connected, the top fixedly connected with solenoid valve of valve body, the output fixedly connected with telescopic shaft of solenoid valve, the one end of telescopic shaft articulates through the round pin axle has the interlocking strip. The utility model discloses a setting of interlocking strip to high vacuum service environment, provides a very necessary means of protection, and simple structure is convenient moreover, need not additional any operation, and is high-efficient practical, and adjusting screw's setting on the end cover has coordinated the relation between ball valve leakproofness and the clamp force in addition, has improved the holistic performance of ball valve.

Description

Ball valve for butting high-vacuum equipment

Technical Field

The utility model relates to a ball valve for docking high vacuum equipment belongs to ball valve technical field.

Background

The ball valve is a valve whose opening and closing part (ball body) is driven by a valve rod and rotates around the axis of the ball valve, the pressure difference between two ends of the ball valve used in a vacuum environment is large, and the safety of instruments and equipment can be ensured only by reaching a certain difference between the vacuum at the two ends, but the existing ball valve has no switch protection mechanism, in addition, the valve body of the existing ball valve utilizes a screw to provide tension, so that the contact surface achieves a sealing effect, but the tightness is difficult to control, in short, if the screw is screwed too tightly, the sealing can be ensured, but the force required by the switch is large, and the using effect is not good; otherwise, the sealing effect cannot be achieved.

Disclosure of Invention

The ball valve, it has solved current ball valve all does not have switch protection mechanism to the problem that screw fixation elasticity intensity is good to be held.

The utility model discloses the technical problem that will solve takes following technical scheme to realize:

a ball valve for butt joint of high vacuum equipment comprises a valve body, a rotating shaft, a ball body and an end cover, wherein the ball body is arranged inside the valve body, the rotating shaft is rotatably connected with the top of the valve body, the bottom of the rotating shaft penetrates through the valve body and extends into the valve body to be fixedly connected with the top of the ball body, the bottom of the ball body is rotatably connected with the inner bottom of the valve body through a connecting shaft and a bearing, the top of the valve body is fixedly connected with a solenoid valve, the output end of the solenoid valve is fixedly connected with a telescopic shaft, one end of the telescopic shaft is hinged with an interlocking strip through a pin shaft, the interlocking strip is hinged with the top of the valve body through a pin shaft, the side wall of the rotating shaft, which is positioned outside the valve body, is fixedly connected with a limiting block, the limiting block corresponds to one end, which is far away from the telescopic, and the inner parts of the threaded holes are all in threaded connection with adjusting screws used for adjusting the gap between the end cover and the valve body.

As a preferable example, the sealing arrangement is carried out between the rotating shaft and the valve body, between the ball body and the end cover, and between the end cover and the valve body through O-shaped rings.

As a preferred example, the top of the valve body is further fixedly connected with a pressing block, the pressing block is sleeved on the rotating shaft and abuts against a step surface of the rotating shaft, and the pressing block is further fixedly connected with a plurality of limiting screws for limiting the rotation angle of the limiting block.

The utility model has the advantages that: the utility model discloses a setting of interlocking strip to high vacuum service environment, provides a very necessary means of protection, and simple structure is convenient moreover, need not additional any operation, and is high-efficient practical, and adjusting screw's setting on the end cover has coordinated the relation between ball valve leakproofness and the clamp force in addition, has improved the holistic performance of ball valve.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic view of the interlocking strips restricting rotation of the rotating shaft;

3 FIG. 3 4 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3

Fig. 5 is a sectional view taken along line B-B of fig. 1.

In the figure: the valve comprises a valve body 1, an end cover 2, a fixing bolt 3, an adjusting screw 4, a rotating shaft 5, an electromagnetic valve 6, a ball body 7, a telescopic shaft 8, an interlocking strip 9, a limiting screw 10, a pressing block 11, a limiting block 12 and an O-shaped ring 13.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand and understand, the present invention is further explained by combining the following specific drawings.

As shown in fig. 1-5, a ball valve for butt joint of high vacuum equipment comprises a valve body 1, a rotating shaft 5, a ball body 7 and an end cover 2, wherein the ball body 7 is arranged inside the valve body 1, the rotating shaft 5 is rotatably connected with the top of the valve body 1, the bottom of the rotating shaft 5 extends into the valve body 1 in a penetrating manner and is fixedly connected with the top of the ball body 7, the bottom of the ball body 7 is rotatably connected with the inner bottom of the valve body 1 through a connecting shaft and a bearing, the top of the valve body 1 is fixedly connected with an electromagnetic valve 6, the output end of the electromagnetic valve 6 is fixedly connected with a telescopic shaft 8, one end of the telescopic shaft 8 is hinged with an interlocking strip 9 through a pin shaft, the interlocking strip 9 is hinged with the top of the valve body 1 through a pin shaft, the side wall of the rotating shaft 5, which is positioned outside the valve body 1, is fixedly connected with a limiting block, a plurality of evenly distributed threaded holes are further formed in the end cover 2, and adjusting screws 4 used for adjusting gaps between the end cover 2 and the valve body 1 are connected to the threaded holes in the end cover 2 in a threaded mode.

Adopt above-mentioned scheme, through interlocking strip 9 restriction rotation axis 5, provide a very necessary means of protection for the ball valve, simple structure is convenient moreover, need not additional any operation, and is high-efficient practical, and the setting of adjusting screw 4 on the end cover 2 has coordinated the relation between ball valve leakproofness and the clamp force in addition, has improved the holistic performance of ball valve.

The sealing arrangement is carried out between the rotating shaft 5 and the valve body 1, between the ball body 7 and the end cover 2, and between the end cover 2 and the valve body 1 through O-shaped rings 13.

Adopt above-mentioned scheme, strengthen the sealed effect of ball valve through O type circle 13, use the back for a long time simultaneously, be convenient for change after O type circle 13 ageing damage.

The top of the valve body 1 is also fixedly connected with a pressing block 11, the pressing block 11 is sleeved on the rotating shaft 5 and abuts against a step surface of the rotating shaft 5, and the pressing block 11 is also fixedly connected with a plurality of limiting screws 10 used for limiting the rotating angle of the limiting block 12.

Adopt above-mentioned scheme, the seal strength of rotation axis 5 and valve body 1 rotation junction is strengthened to compact heap 11, and limiting screw 10 limits the rotation range of stopper 12 simultaneously, prevents that this ball valve can not reach correct switch position.

The working principle is as follows: when in use, the vacuum signal received by the singlechip is logically associated with the on-off of the electromagnetic valve 6, when one side of the ball valve is in butt joint with a high vacuum end and one side is in butt joint with a low vacuum end, the signal of a vacuum gauge at the low vacuum end is read by the singlechip, when the reading reaches a safety value that the ball valve can be opened, the electromagnetic valve 6 is electrified, at the moment, the electromagnetic valve 6 drives the telescopic shaft 8 to contract, the telescopic shaft 8 moves to drive the interlocking strip 9 to rotate for a certain angle around the rotating shaft 5, at the moment, the end face of the interlocking strip 9 is far away from the limiting block 12 and cannot play a role of limiting the rotation of the interlocking strip, the rotating shaft 5 can rotate within 90 degrees among the limiting screws 10, and then the ball valve is opened and closed, if the vacuum reading value does not reach the safe value, the end surface of the interlocking strip 9 clamps the limit block 12, the ball valve can not be opened at the moment, and the purpose of protecting the high vacuum side is achieved; when the end cover 2 is installed, firstly, the adjusting screw 4 is screwed in the threaded hole on the end cover 2, the fixing depth of the adjusting screw 4 is determined, then the end cover 2 and the valve body 1 are fixed through the fixing bolt 3, and the gap between the end cover 2 and the valve body 1, namely the matching close relation between the end cover 2, the valve body 1 and the sealing element, is controlled through the length of the adjusting screw 4 exposed on the inner side of the end cover 2.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a ball valve for docking high vacuum apparatus, includes valve body (1), rotation axis (5), spheroid (7) and end cover (2), spheroid (7) set up the inside at valve body (1), rotation axis (5) are rotated with the top of valve body (1) and are connected, and the bottom of rotation axis (5) runs through the inside that extends to valve body (1), with the top fixed connection of spheroid (7), the bottom of spheroid (7) is passed through the interior bottom rotation of connecting axle and bearing and valve body (1) and is connected its characterized in that: the top fixedly connected with solenoid valve (6) of valve body (1), the output fixedly connected with telescopic shaft (8) of solenoid valve (6), the one end of telescopic shaft (8) articulates through the round pin axle has interlocking strip (9), interlocking strip (9) are articulated through the top of round pin axle with valve body (1), rotation axis (5) are located outer lateral wall fixedly connected with stopper (12) of valve body (1), the one end that telescopic shaft (8) were kept away from to stopper (12) and interlocking strip (9) is corresponding, end cover (2) are through fixing bolt (3) and valve body (1) fixed connection, still set up a plurality of evenly distributed's screw hole on end cover (2), it is a plurality of the equal threaded connection in inside of screw hole has adjusting screw (4) that are used for adjusting clearance between end cover (2) and valve body (1).

2. A ball valve for docking a high vacuum apparatus according to claim 1, wherein: the sealing device is characterized in that sealing arrangement is carried out between the rotating shaft (5) and the valve body (1), between the ball body (7) and the end cover (2) and between the end cover (2) and the valve body (1) through O-shaped rings (13).

3. A ball valve for docking a high vacuum apparatus according to claim 1, wherein: the valve is characterized in that a pressing block (11) is fixedly connected to the top of the valve body (1), the pressing block (11) is sleeved on the rotating shaft (5) and abuts against a step surface of the rotating shaft (5), and a plurality of limiting screws (10) used for limiting the rotation angle of the limiting block (12) are fixedly connected to the pressing block (11).