A sealing device for leak detection

Abstract

The application relates to the technical field of sealing devices, in particular to a sealing device for leak detection, which comprises a base, a connecting cylinder fixed to the side wall of the base, a connecting seat installed on the inner wall of the connecting cylinder, a sealing ring fixed to the side of the connecting seat away from the base, a driving element arranged on the side wall of the base, the driving element being used for driving the connecting seat to slide on the inner wall of the connecting cylinder, and the connecting seat and the inner wall of the connecting cylinder being in sliding fit. The application has the effect of simplifying the sealing process of a vacuum component, thereby improving the efficiency of the leak detection work of the staff.

Description

Technical Field

[0001] This application relates to the field of sealing device technology, and in particular to a sealing device for leak detection. Background Technology

[0002] CF type vacuum interfaces are mostly used for high vacuum sealing. Vacuum components need to be checked for leaks. When a vacuum component leaks, its performance after assembly will be affected.

[0003] The existing leak detection method involves workers installing a connecting plate on the flange of the vacuum component to seal the cavity of the vacuum component. During the installation of the connecting plate, workers install several copper rings at the vacuum interface. Then, workers install the connecting plate onto the side wall of the copper rings. Eight or more bolts are installed on the side of the connecting plate away from the copper rings. At this point, workers tighten all the bolts. This process achieves the sealing of the cavity of the vacuum component.

[0004] The sealing process of the aforementioned vacuum components is rather cumbersome, which reduces the efficiency of leak detection work for staff and needs improvement. Utility Model Content

[0005] To simplify the sealing process of vacuum components and thus improve the efficiency of leak detection work, this application provides a sealing device for leak detection.

[0006] This application provides a sealing device for leak detection, which adopts the following technical solution:

[0007] A sealing device for leak detection includes a base, a connecting cylinder fixed to the side wall of the base, a connecting seat installed on the inner wall of the connecting cylinder, and a sealing ring fixed to the connecting seat on the side away from the base. A driving member is provided on the side wall of the base, and the driving member is used to drive the connecting seat to slide on the inner wall of the connecting cylinder, and the connecting seat slides in cooperation with the inner wall of the connecting cylinder.

[0008] By adopting the above technical solution, when workers use the sealing device to check for leaks in the vacuum component, they install the vacuum component onto the inner wall of the connecting cylinder. At this time, the side wall of the flange abuts against the inner wall of the connecting cylinder. Workers fix the flange to the inner wall of the connecting cylinder and then start the drive unit. The drive unit drives the connecting seat to slide towards the flange on the inner wall of the connecting cylinder. Under the action of the drive unit, the connecting seat abuts against the side wall of the flange. The sealing ring is compressed under the pressure of the connecting seat. This setting simplifies the sealing process of the vacuum component, thereby improving the efficiency of workers in checking for leaks.

[0009] Optionally, the connecting cylinder is configured as a semi-cylindrical shape, and a flange is fixed at the end of the connecting cylinder, the flange being located on the inner wall of the connecting cylinder.

[0010] By adopting the above technical solution, the semi-cylindrical setting of the connecting cylinder makes it easier for the operator to install the vacuum component onto the inner wall of the connecting cylinder. The operator can use the semi-circular position of the connecting cylinder to clamp the vacuum component onto the side wall of the flange. At this time, the side wall of the flange abuts against the side wall of the flange. This setting simplifies the operator's operation process.

[0011] Optionally, a positioning post is fixed to the side of the flange near the sealing ring, and the side wall of the positioning post can abut against the side wall of the flange.

[0012] By adopting the above technical solution, the positioning column makes it easier for workers to install the flange to the accurate position on the inner wall of the connecting cylinder, thereby aligning the sealing ring with the side wall of the flange and increasing the leak detection efficiency of the sealing device.

[0013] Optionally, a plurality of positioning posts are provided, and the plurality of positioning posts are evenly distributed on the sidewall of the flange.

[0014] By adopting the above technical solution, the setting of several positioning posts further improves the accuracy of the flange installation position on the flange sidewall, thereby increasing the efficiency of the staff in checking the vacuum components for leaks.

[0015] Optionally, the side wall of the connecting plate is provided with several through holes, and a positioning rod is slidably connected to the inner wall of the through holes. The side wall of the positioning rod can abut against the inner wall of the flange.

[0016] By adopting the above technical solution, the positioning rod makes it easier for staff to check whether the flange is installed in the correct position, enabling them to correct any errors in flange installation and thus improving the accuracy of leak detection for vacuum components.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. When workers use the sealing device for leak detection, they install the vacuum component onto the inner wall of the connecting cylinder. At this time, the side wall of the flange abuts against the inner wall of the connecting cylinder. Workers control the drive unit to operate, which drives the connecting seat to slide towards the flange on the inner wall of the connecting cylinder. Subsequently, the side wall of the connecting seat abuts against the side wall of the flange, and the side wall of the sealing ring abuts against and deforms against the side wall of the flange. Workers can then perform leak detection on the vacuum component. This setup simplifies the sealing process of the vacuum component, thereby improving the efficiency of leak detection.

[0019] 2. When the operator installs the vacuum component onto the inner wall of the connecting cylinder, the operator uses the positioning pin to stably install the flange onto the side wall of the flange. Then, the operator uses the positioning rod to position the flange, thereby making the leak detection results of the vacuum component more accurate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a sealing device for leak detection in an embodiment of this application.

[0021] Figure 2 This is a cross-sectional view of a sealing device used for leak detection in an embodiment of this application.

[0022] Figure 3 This is an embodiment diagram of a sealing device used for leak detection in this application.

[0023] Reference numerals: 1. Base; 2. Connecting cylinder; 3. Connecting seat; 4. Sealing ring; 5. Driving component; 6. Flange; 7. Positioning pin; 8. Through hole; 9. Positioning rod. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0025] This application discloses a sealing device for leak detection.

[0026] Reference Figure 1 A sealing device for leak detection includes a base 1, a connecting cylinder 2 fixed to the side wall of the base 1, a connecting seat 3 installed on the inner wall of the connecting cylinder 2, a sealing ring 4 fixed to the side of the connecting seat 3 away from the base 1, and a driving member 5 disposed on the side of the base 1 near the connecting seat 3. The connecting cylinder 2 is integrally fixed to the periphery of the base 1, the side wall of the connecting seat 3 is slidably connected to the inner wall of the connecting cylinder 2, and the side wall of the connecting seat 3 abuts against the inner wall of the connecting cylinder 2. The sealing ring 4 has the same center as the connecting seat 3, and the diameter of the sealing ring 4 is smaller than the diameter of the connecting seat 3. Both the sealing ring 4 and the side wall of the connecting seat 3 can abut against the side wall of the flange. In this embodiment, the driving member 5 is preferably a cylinder. The push rod of the driving member 5 is fixed to the side of the connecting seat 3 near the base 1, and the driving member 5 can push the connecting seat 3 to slide along the length direction of the connecting cylinder 2.

[0027] Reference Figure 1 and Figure 2 The connecting cylinder 2 is semi-cylindrical, and the base 1 and connecting seat 3 are both disc-shaped. A flange 6 is integrally fixed at the end of the connecting cylinder 2 away from the base 1. The flange 6 is located on the inner wall of the connecting cylinder 2. Several positioning posts 7 are integrally fixed on the side wall of the flange 6. The positioning posts 7 are located on the side of the flange 6 close to the base 1. In this embodiment, three positioning posts 7 are preferred. The three positioning posts 7 are evenly spaced, and the side wall of the positioning post 7 can abut against the inner wall of the flange.

[0028] Reference Figure 1 and Figure 3The side wall of the connecting seat 3 is provided with several through holes 8. The through holes 8 are arranged circumferentially around the connecting seat 3. The through holes 8 are arranged opposite to the holes on the side wall of the flange. The inner wall of the through hole 8 is slidably connected to a positioning rod 9. A blocking block is integrally fixed at one end of the positioning rod 9 near the base 1. The inner wall of the positioning rod 9 can abut against the inner wall of the flange, and the side wall of the blocking block can abut against the side wall of the connecting seat 3.

[0029] The implementation principle of a sealing device for leak detection in this application embodiment is as follows: When the operator uses the sealing device to detect leaks in a vacuum component, the operator installs the flange onto the inner wall of the connecting cylinder 2. At this time, the inner wall of the flange abuts against the side wall of the positioning pin 7. Then, the operator controls the positioning rod 9 to slide on the inner wall of the through hole 8. The side wall of the positioning rod 9 abuts against the inner wall of the flange. When the flange is positioned, the operator activates the driving component 5. The driving component 5 drives the connecting seat 3 to slide towards the flange. Then, the sealing ring 4 and the side wall of the connecting seat 3 abut against the side wall of the flange. At this time, the operator can carry out leak detection work on the vacuum component. This setting simplifies the sealing process of the vacuum component, thereby improving the efficiency of the operator in performing leak detection work.

[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sealing device for leak detection, characterized in that: The device includes a base (1), a connecting cylinder (2) fixed to the side wall of the base (1), a connecting seat (3) installed on the inner wall of the connecting cylinder (2), and a sealing ring (4) fixed to the side of the connecting seat (3) away from the base (1). A driving member (5) is provided on the side wall of the base (1). The driving member (5) is used to drive the connecting seat (3) to slide on the inner wall of the connecting cylinder (2). The connecting seat (3) slides in cooperation with the inner wall of the connecting cylinder (2).

2. A sealing device for leak detection according to claim 1, characterized in that: The connecting cylinder (2) is a semi-cylindrical structure, and a flange (6) is fixed at the end of the connecting cylinder (2). The flange (6) is located on the inner wall of the connecting cylinder (2).

3. A sealing device for leak detection according to claim 2, characterized in that: A positioning post (7) is fixed on the side of the flange (6) near the sealing ring (4), and the side wall of the positioning post (7) can abut against the side wall of the flange.

4. A sealing device for leak detection according to claim 3, characterized in that: The positioning posts (7) are provided in a plurality of them, and the plurality of positioning posts (7) are evenly arranged on the side wall of the flange (6).

5. A sealing device for leak detection according to claim 4, characterized in that: The side wall of the connecting plate is provided with several through holes (8), and the inner wall of the through holes (8) is slidably connected with a positioning rod (9), and the side wall of the positioning rod (9) can abut against the inner wall of the flange.

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