Vacuum box with good sealing performance

Abstract

The utility model discloses a vacuum box with good sealing performance, and belongs to the technical field of vacuum boxes. In order to solve the problem that an existing product is complex in structure, according to the technical scheme, the vacuum box comprises a lower vacuum box body, the upper end of the lower vacuum box body is connected with an upper vacuum box body, an embedding groove is formed in the lower vacuum box body, and a movable mechanism is arranged on the lower vacuum box body. According to the utility model, through the arrangement of the movable mechanism, when the upper vacuum box and the lower vacuum box are assembled, the tighter the connection of the upper vacuum box and the lower vacuum box is, the sealing effect of the movable mechanism on the two vacuum boxes is better, the sealing performance of the vacuum boxes is improved through the double-tight effect, and the accuracy of the subsequent leak detection result of the vacuum boxes is ensured; different from the traditional sealing strip mounting position, the embedding mechanism is used for sealing at the concave part of one vacuum box, and is provided with three sealing rings, so that the concave part can be sealed from three directions, and the sealing performance of the vacuum box is further improved.

Description

A vacuum box with good sealing performance Technical Field

[0001] This utility model relates to the field of vacuum box technology, specifically a vacuum box with good sealing performance. Background Technology

[0002] The airtightness of the vacuum chamber is crucial for vacuum leak detection. During the vacuum chamber leak detection process, it is necessary to evacuate the interior, which generally requires a rigid and high-strength cylinder. To ensure that the inner cavity of the vacuum chamber does not deform or leak under pressure, the vacuum chamber must have good airtightness.

[0003] Existing vacuum chambers typically use sealing strips at the joints for a single seal, which is not very effective. Long-term use can affect the airtightness of the vacuum chamber and also have a certain impact on the accuracy of leak detection.

[0004] Therefore, those skilled in the art have provided a vacuum chamber with good sealing performance to solve the problems mentioned in the background art. Summary of the Invention

[0005] To overcome the aforementioned deficiencies of the prior art, the present invention provides a vacuum chamber with good sealing performance. By setting up a movable mechanism, the tighter the connection between the upper and lower vacuum chambers after assembly, the better the sealing effect of the movable mechanism on the two vacuum chambers. This double-tightening effect improves the sealing performance of the vacuum chamber and ensures the accuracy of subsequent vacuum chamber leak detection results. Secondly, by setting up an embedding mechanism, which differs from the traditional sealing strip installation position, this embedding mechanism seals the recessed area on one of the vacuum chambers and is equipped with a three-sided sealing ring, which can seal the recessed area from three directions, further improving the sealing performance of the vacuum chamber and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A vacuum chamber with good sealing performance includes a lower vacuum chamber, an upper vacuum chamber connected to the upper end of the lower vacuum chamber, an embedding groove on the lower vacuum chamber, and a movable mechanism on the lower vacuum chamber. The movable mechanism includes an inner telescopic ring and an outer telescopic ring slidably connected inside the embedding groove. A movable column passes through and is slidably connected to the lower vacuum chamber. The movable column is located inside the embedding groove, and a push rod is fixedly connected to the lower end of the movable column. Limit rods are fixedly connected to the lower ends of the inner and outer telescopic rings, and one end of the push rod contacts the limit rod.

[0008] As a further embodiment of this utility model, both the inner and outer telescopic rings are located inside the embedding groove. The inner telescopic ring contacts the arc surface with a smaller diameter in the embedding groove, and the outer telescopic ring contacts the arc surface with a larger diameter in the embedding groove.

[0009] As a further embodiment of this utility model, the diameters of the inner and outer telescopic rings can be changed, and the surfaces of both the inner and outer telescopic rings are provided with sealing rubber material.

[0010] As a further improvement of this utility model, the movable column and push rod are provided in four sets, which can push the inner telescopic ring and the outer telescopic ring to move from different directions.

[0011] As a further embodiment of this utility model, the lower end of the upper vacuum box is provided with an embedding mechanism, the embedding mechanism including an embedding strip fixedly connected to the lower end of the upper vacuum box, and a sealing ring fixedly connected to the upper part of the embedding strip.

[0012] As a further embodiment of this invention, the sealing ring completely encloses the embedding strip, and the embedding strip and the sealing ring can be fully inserted into the embedding groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By setting up an active mechanism, once the upper and lower vacuum chambers are assembled, the tighter the connection between the upper and lower vacuum chambers, the better the sealing effect of the active mechanism at the two vacuum chambers. This double tightness improves the sealing performance of the vacuum chambers, ensuring the accuracy of subsequent vacuum chamber leak detection results. Secondly, by setting up an embedded mechanism, which differs from the traditional sealing strip installation position, this embedded mechanism seals the recessed area on one of the vacuum chambers and is equipped with three sealing rings, which can seal the recessed area from three directions, further improving the sealing performance of the vacuum chambers. Attached Figure Description

[0015] Figure 1 is a three-dimensional structural diagram of a vacuum box with good sealing performance;

[0016] Figure 2 is a schematic diagram of the internal structure when Figure 1 is opened;

[0017] Figure 3 is a three-dimensional structural diagram of the telescopic ring in Figure 2;

[0018] Figure 4 is a schematic cross-sectional view of the movable column in Figure 2.

[0019] In the diagram: 1. Lower vacuum chamber; 2. Upper vacuum chamber; 3. Embedded groove; 4. Inner telescopic ring; 5. Outer telescopic ring; 6. Movable column; 7. Limiting rod; 8. Push rod; 9. Embedded strip; 10. Sealing ring. Detailed Implementation

[0020] Please refer to Figures 1-4. In this embodiment of the present invention, a vacuum box with good sealing performance includes a lower vacuum box 1, an upper vacuum box 2 connected to the upper end of the lower vacuum box 1, an embedding groove 3 on the lower vacuum box 1, and a movable mechanism on the lower vacuum box 1. The movable mechanism includes an inner telescopic ring 4 and an outer telescopic ring 5 slidably connected inside the embedding groove 3. A movable column 6 is slidably connected through the lower vacuum box 1. The movable column 6 is located inside the embedding groove 3. A push rod 8 is fixedly connected to the lower end of the movable column 6. A limit rod 7 is fixedly connected to the lower ends of both the inner telescopic ring 4 and the outer telescopic ring 5. One end of the push rod 8 is in contact with the limit rod 7.

[0021] Both the inner telescopic ring 4 and the outer telescopic ring 5 are located inside the embedded groove 3. The inner telescopic ring 4 is in contact with the arc surface of the embedded groove 3 with a smaller diameter, and the outer telescopic ring 5 is in contact with the arc surface of the embedded groove 3 with a larger diameter.

[0022] The diameters of the inner telescopic ring 4 and the outer telescopic ring 5 can be changed, and the surfaces of the inner telescopic ring 4 and the outer telescopic ring 5 are both provided with sealing rubber material.

[0023] The movable column 6 and push rod 8 are provided in four sets, which can push the inner telescopic ring 4 and the outer telescopic ring 5 to move from different directions.

[0024] An embedding mechanism is provided at the lower end of the upper vacuum box 2. The embedding mechanism includes an embedding strip 9 fixedly connected to the lower end of the upper vacuum box 2, and a sealing ring 10 is fixedly connected to the upper part of the embedding strip 9.

[0025] The sealing ring 10 completely encloses the insert strip 9, and the insert strip 9 and the sealing ring 10 can be fully inserted into the interior of the insert groove 3.

[0026] The working principle of this utility model is as follows: When it is necessary to assemble the upper and lower vacuum boxes, simply insert the lower insert strip 9 of the upper vacuum box 2 into the upper insert groove 3 of the lower vacuum box 1. At this time, the sealing ring 10 can seal the connection between the insert strip 9 and the insert groove 3 from three directions. Unlike the traditional unidirectional sealing, the sealing effect of this sealing method is more significant. At the same time, as the insert strip 9 moves into the insert groove 3, it will push the movable column 6 into the lower vacuum box 1. When the movable column 6 moves, it will drive the push rod 8 to move, thereby driving the inner telescopic ring 4 and the outer telescopic ring 5 to move towards the sealing ring 10 through the limiting rod 7. The lower vacuum box 1 and the upper vacuum box 2 are connected more tightly through the external buckle. At this time, the squeezing force between the inner telescopic ring 4, the outer telescopic ring 5 and the sealing ring 10 will also increase. Through the mutual squeezing between the sealing materials, the sealing effect of the vacuum box is further improved.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vacuum chamber with good sealing performance, comprising a lower vacuum chamber (1), characterized in that: The upper end of the lower vacuum box (1) is connected to the upper vacuum box (2). The lower vacuum box (1) is provided with an embedding groove (3). The lower vacuum box (1) is provided with a movable mechanism. The movable mechanism includes an inner telescopic ring (4) and an outer telescopic ring (5) that are slidably connected inside the embedding groove (3). A movable column (6) is slidably connected through the lower vacuum box (1). The movable column (6) is located inside the embedding groove (3). A push rod (8) is fixedly connected to the lower end of the movable column (6). A limit rod (7) is fixedly connected to the lower ends of the inner telescopic ring (4) and the outer telescopic ring (5). One end of the push rod (8) is in contact with the limit rod (7).

2. The vacuum tank according to claim 1, wherein The inner telescopic ring (4) and the outer telescopic ring (5) are both located inside the embedding groove (3). The inner telescopic ring (4) is in contact with the arc surface of the embedding groove (3) with a smaller diameter, and the outer telescopic ring (5) is in contact with the arc surface of the embedding groove (3) with a larger diameter.

3. A vacuum chamber with good sealing performance according to claim 2, characterized in that, The diameters of the inner telescopic ring (4) and the outer telescopic ring (5) can be changed, and the surfaces of the inner telescopic ring (4) and the outer telescopic ring (5) are both provided with sealing rubber material.

4. The vacuum tank according to claim 1, wherein The movable column (6) and push rod (8) are provided in four sets, which can push the inner telescopic ring (4) and the outer telescopic ring (5) to move from different directions.

5. The vacuum tank according to claim 1, wherein The lower end of the upper vacuum box (2) is provided with an embedding mechanism, which includes an embedding strip (9) fixedly connected to the lower end of the upper vacuum box (2), and a sealing ring (10) is fixedly connected to the upper part of the embedding strip (9).

6. The vacuum tank according to claim 5, wherein The sealing ring (10) completely wraps around the insert strip (9), and the insert strip (9) and the sealing ring (10) can be completely inserted into the interior of the insert groove (3).

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