Vacuum pipeline of backing pump for vacuum coating machine

Abstract

The utility model provides a backing pump vacuum pipeline for a vacuum coating machine, which comprises a vacuum inner pipe and a protective pipe arranged on the outer side of the vacuum inner pipe, elastic rings are arranged between the vacuum inner pipe and the protective pipe at intervals, and two side ends of the protective pipe are respectively provided with an air port. The protective tube is arranged on the outer side of the vacuum inner tube, so that the air cavity is formed between the vacuum inner tube and the protective tube, air in the vacuum inner tube can be cooled through air flow in the air cavity, air in the vacuum inner tube can be cooled, and the vacuum inner tube is prevented from being damaged after being used for a long time; the elastic rings are arranged between the vacuum inner pipe and the protective pipe at intervals, the stability of the vacuum inner pipe can be achieved, high-temperature gas cannot vibrate when rapidly flowing in the vacuum pipeline, then the fastening of the pipeline connecting position is kept, and gas leakage is prevented.

Description

Technical Field

[0001] The utility model relates to the field of vacuum pipelines, in particular to a vacuum pipeline of a front-stage pump for a vacuum coating machine. Background Art

[0002] A large amount of gas will pass through the vacuum pipe during the vacuum pumping process. The gas contains high heat, so the temperature is high. High temperature will damage the vacuum pipe. In addition, the rapid flow of high-temperature gas in the vacuum pipe will cause the vacuum pipe to vibrate, which can easily cause the pipe connection to loosen and lead to gas leakage. Utility Model Content

[0003] The utility model aims to provide a vacuum pipeline of a front-stage pump for a vacuum coating machine to solve the problems raised in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a vacuum pipeline of a front-stage pump for a vacuum coating machine, comprising a vacuum inner tube and a protective tube arranged on the outside of the vacuum inner tube, an elastic ring is arranged between the vacuum inner tube and the protective tube, and air outlets are respectively arranged on both side ends of the protective tube.

[0005] The elastic ring is a silicone ring.

[0006] A fan is installed in the air outlet.

[0007] A filter screen is arranged at the air outlet of the fan.

[0008] Elastic supporting parts are respectively arranged at the upper and lower parts between the vacuum inner tube and the protective tube.

[0009] Compared with the prior art, the beneficial effects achieved by the utility model are as follows: the utility model arranges a protective tube on the outside of the vacuum inner tube, so that a wind cavity is formed between the vacuum inner tube and the protective tube, and the air flow in the wind cavity can realize air cooling of the vacuum inner tube, realize cooling of the gas in the vacuum inner tube, and avoid damage to the vacuum inner tube after long-term use; an elastic ring is arranged at intervals between the vacuum inner tube and the protective tube, which can stabilize the vacuum inner tube, so that the high-temperature gas will not vibrate when flowing rapidly in the vacuum pipe, thereby keeping the pipe connection tight and preventing leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. In the accompanying drawings:

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 yes Figure 1 Sectional view at AA in the middle;

[0013] In the figure: 1 vacuum inner tube; 2 protection tube; 3 elastic ring; 4 air outlet; 5 fan; 6 filter screen; 7 elastic support member. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] Example 1

[0016] See also Figure 1 The utility model provides a technical solution: a vacuum pipeline of a front-stage pump for a vacuum coating machine, comprising a vacuum inner tube 1 and a protective tube 2 arranged outside the vacuum inner tube 1, an elastic ring 3 is arranged between the vacuum inner tube 1 and the protective tube 2, and air outlets 4 are respectively arranged on both side ends of the protective tube 2.

[0017] The elastic ring 3 is a silicone ring.

[0018] Example 2

[0019] See also Figure 2 A fan 5 is installed in the air outlet 4. When the fan 5 is started, the air flow is strengthened, the efficiency of heat exchange is improved, and the effect of cooling the gas in the vacuum inner tube 1 is improved. A filter 6 is arranged at the air outlet of the fan 5. Elastic support members 7 are respectively arranged at the upper and lower parts between the vacuum inner tube 1 and the protective tube 2, which can further achieve the stability of the vacuum inner tube 1.

[0020] It should be noted that relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises", or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article, or device.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A vacuum pipeline of a front pump for a vacuum coating machine, characterized in that: It comprises a vacuum inner tube (1) and a protective tube (2) arranged outside the vacuum inner tube (1), elastic rings (3) are respectively arranged on both side ends between the vacuum inner tube (1) and the protective tube (2), and air outlets (4) are respectively arranged on both side ends of the protective tube (2).

2. The vacuum pipeline of the front pump for a vacuum coating machine according to claim 1, characterized in that: The elastic ring (3) is a silicone ring.

3. The vacuum pipeline of the front pump for a vacuum coating machine according to claim 1, characterized in that: A fan (5) is installed in the air outlet (4).

4. The vacuum pipeline of the front pump for a vacuum coating machine according to claim 3, characterized in that: A filter screen (6) is provided at the air outlet of the fan (5).

5. The vacuum pipeline of the front pump for a vacuum coating machine according to claim 1, characterized in that: Elastic support members (7) are respectively provided at the upper and lower parts between the vacuum inner tube (1) and the protective tube (2).

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