Vacuum tube capable of preventing air leakage in connection

Abstract

The utility model relates to the field of vacuum tubes, and particularly discloses a vacuum tube capable of preventing internal air leakage. The outer ring sleeves a specified position at one end of the pipe body and is fixed with the pipe body; the inner wall of the limiting ring is fixed to the outer wall of one end of the pipe body. The outer wall of the limiting ring is fixed to the inner wall of the fixing ring. A plurality of first groove bodies are uniformly distributed on the limiting ring; a connecting block is arranged in the first groove body, three side faces of the connecting block are fixed to the side wall of the first groove body, the fourth side face of the connecting block is fixed to one side of an inflation block, and an air inlet hole is formed in the inflation block; the connector is connected with the pipe body through connection and fixation of the first thread and the second thread, internal air leakage is prevented, meanwhile, the inflation block is arranged on the outer ring, when air leakage occurs to the pipe body and the connector, air enters the inflation block, the inner wall of the inflation block is expanded, and the double air leakage prevention effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of vacuum tubes, in particular to a vacuum tube capable of preventing air leakage inside the connection. Background Art

[0002] When installing the vacuum tube, if the sealing ring (gasket) is not installed properly, the old sealing ring (gasket) is reused, the bolt tightening method and torque are improper, the above-mentioned parts are not properly inserted during connection, the clamp is loose, and the pipeline is damaged, the air will leak into the pipeline from the defective place and flow into the cylinder due to the internal and external pressure difference when the vacuum tube is working, which will eventually have a certain impact on the work of the engine, causing the engine's working performance to decline, or even lose its working ability. Utility Model Content

[0003] The utility model provides a vacuum tube which can prevent the air leakage inside the connection, thereby solving the above-mentioned problem.

[0004] To solve the above problems, the technical solution provided by the utility model is as follows: a vacuum tube for preventing internal air leakage, comprising a tube body, an outer ring and a connecting block; one end of the tube body is threadedly connected to one end of the external joint; the outer ring is sleeved at a specified position of one end of the tube body, and the two are fixed; the outer ring comprises a limiting ring and a fixing ring; the inner wall of the limiting ring is fixed to the outer wall of one end of the tube body; the outer wall of the limiting ring is fixed to the inner wall of the fixing ring; a plurality of first grooves are evenly distributed on the limiting ring; a connecting block is arranged inside the first groove body, three side surfaces of the connecting block are fixed to the side walls of the first groove body, the fourth side surface of the connecting block is fixed to one side of the inflatable block, and the inflatable block is provided with an air inlet hole.

[0005] A preferred technical solution: a first thread is provided on the outer wall of one end of the tube body, a second thread matching the first thread is provided on one end of the connector, and a width of the first thread is consistent with a width of the second thread.

[0006] A preferred technical solution: an outer wall of the connector is further provided with an embedding hole, and the embedding hole is adjacent to the end of the second thread.

[0007] The preferred technical solution is that the inflatable block is hollow and made of rubber material, and the connection between the inflatable block and the connecting block is bendable; the shape of the inflatable block matches the shape of the embedding hole.

[0008] A preferred technical solution: the width of the first thread is consistent with the width of the fixing ring; the outer wall of the first thread and the inner wall of the fixing ring form an air leakage chamber.

[0009] Compared with the prior art, the beneficial effect is that, by adopting the above-mentioned scheme, the utility model connects the connecting head and the tube body by connecting and fixing the first thread and the second thread to prevent leakage of internal air, and at the same time, an inflatable block is provided on the outer ring. When leakage occurs between the tube body and the connecting head, gas enters into the inflatable block to expand the inner wall of the inflatable block, which plays a double role in preventing leakage, thereby reducing the leakage of the vacuum tube when it is connected to the connecting head. This scheme is more practical and suitable for wide promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0012] Figure 2 This is a schematic diagram of the pipe structure of the utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the connector of the utility model;

[0014] Figure 4 This is a schematic diagram of the outer ring structure of the utility model;

[0015] Figure 5 It is a schematic diagram of the assembly structure of the pipe body and the outer ring structure of the utility model.

[0016] As shown in the above figure: tube body 1; outer ring 2; connector 3; first thread 11; limiting ring 22; fixing ring 23; connecting block 24; inflation block 25; air inlet 26; second thread 31 embedded in hole 32. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0018] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "fixed", "integrally formed", "left", "right" and similar expressions used in this specification are for illustrative purposes only. In the drawings, units with similar structures are marked with the same reference numerals.

[0019] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by technicians in the technical field of the utility model. The terms used in this specification are only for the purpose of describing specific embodiments and are not used to limit the utility model.

[0020] like Figure 1-5 As shown, an embodiment of the utility model is: a vacuum tube for preventing internal air leakage, comprising a tube body 1, an outer ring 2 and a connecting block 24; one end of the tube body 1 is threadedly connected to one end of the external joint; the outer ring 2 is sleeved at a specified position at one end of the tube body 1, and the two are fixed; the outer ring 2 includes a limiting ring 22 and a fixing ring 23; the inner wall of the limiting ring 22 is fixed to the outer wall of one end of the tube body 1; the outer wall of the limiting ring 22 is fixed to the inner wall of the fixing ring 23; a plurality of first grooves are evenly distributed on the limiting ring 22; a connecting block 24 is arranged inside the first groove, three side surfaces of the connecting block 24 are fixed to the side walls of the first groove, the fourth side surface of the connecting block 24 is fixed to one side of the inflatable block 25, and the inflatable block 25 is provided with an air inlet 26.

[0021] It should be noted that: the tube body 1 and the connector 3 are threadedly fixed by the first thread 11 of the tube body 1 and the second thread 31 of the connector 3; then, the inflatable block 25 is bent and embedded in the embedding hole 32, and the hoop is put on the outer wall of the connector 3 so that the inner wall of the hoop fits with the outer surface of the embedding hole 32, so that the inflatable block 25 will not be stretched outward when filled with gas, and can only expand from four sides, so that the inflatable block 25 and the embedding hole 32 are completely sealed.

[0022] Preferably, a first thread 11 is disposed on an outer wall of one end of the tube body 1 , and a second thread 31 matching the first thread 11 is disposed on one end of the connector 3 , and a width of the first thread 11 is consistent with a width of the second thread 31 .

[0023] It should be noted that the tube body 1 and the connector 3 are threadedly connected and fixed by the cooperation of the first thread 11 and the second thread 31; when the first thread 11 and the second thread 31 are cooperated and fixed, a single thread width is formed, which reduces the connection space and thus reduces the probability of air leakage.

[0024] Preferably, the outer wall of the connector 3 is further provided with an embedding hole 32 , and the embedding hole 32 is adjacent to the end of the second thread 31 .

[0025] It should be noted that: by inserting the inflatable block 25 into the embedding hole 32, in the event of air leakage in the connection between the first thread 11 and the second thread 31, gas enters the inflatable block 25 through the air inlet hole 26, causing the inflatable block 25 to expand, thereby making the inflatable block 25 fit tightly with the embedded block, preventing the gas from leaking out from the junction of the tube body 1 and the connector 3.

[0026] Preferably, the inflatable block 25 is hollow and made of rubber material, and the connection portion between the inflatable block 25 and the connecting block 24 is bendable; the shape of the inflatable block 25 matches the shape of the embedding hole 32.

[0027] The width of the first thread 11 is consistent with the width of the fixing ring 23 ; the outer wall of the first thread 11 and the inner wall of the fixing ring 23 form an air leakage chamber.

[0028] It should be noted that: when the first thread 11 is connected and fixed with the second thread 31, the inflatable block 25 is inserted into the embedded hole 32 (because the connection between the inflatable block 25 and the connecting block 24 is bendable), and the hoop is put on the outer wall of the connecting head 3 to make the inner wall of the hoop fit with the outer surface of the embedded hole 32, so that the inflatable block 25 will not expand outward when filled with gas, and can only expand from all sides, so that the inflatable block 25 and the embedded hole 32 are completely sealed.

[0029] It should be noted that the above-mentioned technical features are further combined with each other to form various embodiments not listed above, which are all deemed to be within the scope of the present utility model specification; and, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should fall within the scope of protection of the claims attached to the present utility model.

Claims

1. A vacuum tube for preventing air leakage inside the connection, characterized in that; It is provided with a tube body, an outer ring and a connecting block; one end of the tube body is threadedly connected to one end of the external joint; the outer ring is sleeved at a specified position of one end of the tube body, and the two are fixed; the outer ring includes a limiting ring and a fixing ring; the inner wall of the limiting ring is fixed to the outer wall of one end of the tube body; the outer wall of the limiting ring is fixed to the inner wall of the fixing ring; a plurality of first grooves are evenly distributed on the limiting ring; a connecting block is arranged inside the first groove body, three side surfaces of the connecting block are fixed to the side walls of the first groove body, the fourth side surface of the connecting block is fixed to one side of the inflatable block, and the inflatable block is provided with an air inlet hole.

2. A vacuum tube for preventing air leakage inside a connection according to claim 1, characterized in that; A first thread is disposed on the outer wall of one end of the tube body, and a second thread matching the first thread is disposed on one end of the connection block, and the width of the first thread is consistent with the width of the second thread.

3. A vacuum tube for preventing air leakage inside a connection according to claim 2, characterized in that; An embedding hole is also provided on the outer wall of the connection block, and the embedding hole is adjacent to the end of the second thread.

4. A vacuum tube for preventing air leakage inside a connection according to claim 1, characterized in that; The inflatable block is hollow and made of rubber material. The connection between the inflatable block and the connecting block is bendable. The shape of the inflatable block matches the shape of the embedding hole.

5. A vacuum tube for preventing air leakage inside a connection according to claim 2, characterized in that; The width of the first thread is consistent with the width of the fixing ring; the outer wall of the first thread and the inner wall of the fixing ring form an air leakage chamber.

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