Plug

Abstract

The utility model provides a plug which comprises a first piece and a second piece, the first piece is used for being connected with a pipeline piece, the second piece is arranged outside the first piece in a sleeved mode, the first piece is connected with the second piece in a sliding mode, a first cavity is formed between the second piece and the first piece, at least one first through hole is formed in the second piece, and a second cavity is formed in the second piece. The first through hole is communicated with the first cavity, and a first part used for separating the first cavity is fixedly arranged on the first piece; the utility model has the advantages that the purpose of connecting the first piece with the pipeline piece is achieved, and the occupied space of the structure is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of plugs, and more specifically to a plug. Background Art

[0002] During the air tightness inspection of pipelines, valve bodies, etc., after the pipeline or valve body is sealed with a sealing tool, the inside of the valve body is inspected, and an air inlet channel is provided on the plug, and the plug is set in the pipeline to achieve a sealed connection with the pipeline, and the pipeline or valve body is inflated with air using the air inlet channel to inspect the sealing or flow inside the pipeline or valve body.

[0003] The current plug requires a separate drive unit and an air intake pipe to be connected to the pipe. The drive unit drives the air intake pipe to move and connect with the pipe. The plug with this structure requires the air intake pipe to be bent or the drive end of the drive unit to be connected to the outer surface of the air intake pipe for pushing, resulting in a large space occupied by the design of the plug. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a plug to overcome the above-mentioned defects in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A plug includes a first piece and a second piece, wherein the first piece is used to connect to a pipe piece, the second piece is sleeved outside the first piece, and the first piece and the second piece are slidably connected, a first cavity is formed between the second piece and the first piece, at least one first through hole is provided on the second piece, the first through hole is connected to the first cavity, and a first part for separating the first cavity is fixedly provided on the first piece.

[0007] Further, the direction in which the first part moves in the first cavity is defined as the first direction, and there are two first through holes, which are respectively close to two ends of the first cavity in the first direction.

[0008] Furthermore, a first sealing ring is provided between the first member and the second member.

[0009] Furthermore, the second member is provided with a second through hole penetrating the wall of the second member, and the second through hole is located on a side of the first sealing ring away from the first cavity.

[0010] Furthermore, a second sealing ring is provided between the first member and the second member, and the second sealing ring is located on a side of the second through hole away from the first cavity.

[0011] Furthermore, a third piece is provided at an end of the first piece away from the second piece, a slide groove is provided in the third piece, a third sealing ring and a fourth piece are provided in the slide groove, the fourth piece can be slidably located in the slide groove, and one end of the fourth piece is pressed against the third sealing ring, a third through hole is provided on the third piece, the third through hole is located on a side of the fourth piece away from the third sealing ring, and the third through hole is connected to the slide groove.

[0012] Furthermore, one end of the third through hole opens toward a side wall of the third member that faces away from the third sealing ring.

[0013] Furthermore, the first piece is provided with a ball head piece connected to the third piece.

[0014] Furthermore, the ball head piece is detachably connected to the first piece, a ball groove matching with the ball head piece is provided in the third piece, and the third piece is detachably connected to the ball head piece or the first piece.

[0015] Furthermore, the first piece is specifically a tubular piece, and the second piece is specifically a square piece.

[0016] The beneficial effects of the utility model are as follows: the first piece and the second piece are sleeved together so that the first piece can slide inside the second piece, so that the first piece can be connected to the pipe piece, reducing the occupied space of the structure. Specifically, through the chamber formed between the first piece and the second piece, a medium is injected into the chamber from the outside so that the first piece is pressurized and can slide inside the second piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structure diagram of the utility model;

[0018] Figure numerals: 1, first piece; 2, second piece; 3, first cavity; 4, first through hole; 5, first part; 6, first sealing ring; 7, second through hole; 8, second sealing ring; 9, third piece; 10, third sealing ring; 11, fourth piece; 12, third through hole; 13, ball head piece. DETAILED DESCRIPTION

[0019] 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.

[0020] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0022] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0023] The existing plug needs to be separately provided with a driving part and an air intake pipe when connecting the pipes, and the driving part drives the air intake pipe to move and connect with the pipe. The plug of this structure needs to set the air intake pipe into a curved shape or the driving end of the driving part is connected to the outer surface of the air intake pipe for pushing, resulting in that the design of the plug occupies a large space. Therefore, the utility model designs such a plug, specifically as follows Figure 1 As shown, it includes a first piece 1 and a second piece 2. The first piece 1 is specifically a tubular piece, and can also be a square piece with a tubular hole. The first piece 1 is actually an air intake piece, that is, the first piece 1 is used to connect with a pipeline piece; the second piece 2 is specifically a square piece, and can also be a piece of other shapes with a tubular hole. The second piece 2 is sleeved outside the first piece 1, and the first piece 1 and the second piece 2 are slidably connected. A groove is provided on the inner wall of the second piece 2. A first cavity 3 is formed between the second piece 2 and the first piece 1 when the second piece 2 and the first piece 1 are sleeved. At least one first through hole 4 is provided on the second piece 2, and the first through hole 4 is connected with the first cavity 3. A first part 5 for separating the first cavity 3 is fixedly provided on the first piece 1. The first part 5 is a ring on the first piece 1, and its driving principle is: when the medium is filled into the first through hole 4 into the first cavity 3, the medium in the first cavity 3 will apply pressure to the first part 5, and the first part 5 slides in the first cavity 3, that is, the first piece 1 can slide in the second piece 2, so that the first piece 1 can complete the purpose of connecting with the pipeline member, reducing the occupied space of the structure.

[0024] The direction in which the first part 5 moves in the first cavity 3 is defined as the first direction, wherein there can be one first through hole 4. When the medium is injected into the first through hole 4, the medium pushes the first part 5 forward. When the medium injected into the first cavity 3 reaches a specified amount, the medium is always kept in the first cavity 3 to give the pressure. In another case, there are two first through holes 4, and the two first through holes 4 are respectively close to the two ends of the first cavity 3 in the first direction, that is, when the sliding resistance of the first piece 1 is too large, the medium can be selected to be injected into one of the first through holes 4, and the other one can extract the medium at the same time; the medium includes water, gas, oil and other flowing substances.

[0025] In order to prevent the medium in the first chamber 3 from leaking from the connection gap between the first component 1 and the second component 2 , causing the medium to leak into the air intake duct of the first component 1 , a first sealing ring 6 is further provided between the first component 1 and the second component 2 .

[0026] In order to more effectively prevent the medium in the first chamber 3 from leaking into the air inlet passage, a second through hole 7 penetrating the wall of the second chamber 2 is further provided on the second piece 2, and the second through hole 7 is located on the side of the first sealing ring 6 away from the first chamber 3, wherein the second through hole 7 may also be located on the side of the first sealing ring 6 close to the first chamber 3. When medium leakage occurs, the medium may be preferentially blocked by the first sealing ring 6, or sucked out by the second through hole 7. The utility model is preferably that the medium is first blocked by the first sealing ring 6, and when the leaked medium is too much and causes the first sealing ring 6 to fail to block, it is then sucked out by the second through hole 7. In order to prevent leakage from affecting the air inlet passage to a greater extent, a second sealing ring 8 is further provided between the first piece 1 and the second piece 2, and the second sealing ring 8 is located on the side of the second through hole 7 away from the first chamber 3, that is, another sealing ring is provided on one side of the second through hole 7, and the second sealing ring 8 is the final guarantee for preventing leakage.

[0027] A third piece 9 is provided at one end of the first piece 1 away from the second piece 2, a slide groove is provided in the third piece 9, a third sealing ring 10 and a fourth piece 11 are provided in the slide groove, the fourth piece 11 is specifically a tubular piece, the fourth piece 11 can be slidably located in the slide groove, the third sealing ring 10 is located at one end of the slide groove away from the first piece 1, one end of the fourth piece 11 presses against the third sealing ring 10, a third through hole 12 is provided on the third piece 9, the third through hole 12 is located on a side of the fourth piece 11 away from the third sealing ring 10, and the third through hole 12 is connected to the slide groove, and the principle is: when the first piece 1 extends out of the second piece 2 At this time, when the first piece 1 is sleeved on the pipe piece to the specified position, after the medium is injected into the third through hole 12, the fourth piece 11 is squeezed by the pressure of the medium to squeeze the third sealing ring 10. The third sealing ring 10 will expand after being compressed so that the third sealing ring 10 hugs the pipe piece tightly, wherein the third channel can be a vertical channel or an "L-shaped" channel, and one end of the third through hole 12 opens toward the side wall of the third piece 9 facing away from the third sealing ring 10. At this time, after the medium is input into the third channel, the medium directly applies pressure to the fourth piece 11 to push the fourth piece 11 to squeeze the third sealing ring 10.

[0028] The first piece 1 is partially exposed outside the second piece 2, and a ball head piece 13 connected to the third piece 9 is provided on the first piece 1. The ball head piece 13 is connected to the first piece 1 by means of threads or clamping. A ball groove matching the ball head piece 13 is provided inside the third piece 9, and the third piece 9 is detachably connected to the ball head piece 13 or the first piece 1, wherein an outer tube sleeve partially wraps the ball head piece 13 outside the first piece 1, and the outer tube sleeve is movably connected to the ball head piece 13, the ball groove wraps the remaining part of the ball head piece 13, and the outer tube sleeve is threadedly connected to the third piece 9. The setting of the ball head piece 13 can be adapted to pipe fittings with deviations, and the floating of the ball head piece 13 can enable the third piece 9 to be mounted on pipe fittings with slight position deviations.

[0029] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A plug, comprising a first piece (1) and a second piece (2), wherein the first piece (1) is used to connect with a pipe member, and characterized in that: The second member (2) is sleeved outside the first member (1), and the first member (1) is slidably connected to the second member (2), a first cavity (3) is formed between the second member (2) and the first member (1), the second member (2) is provided with at least one first through hole (4), the first through hole (4) is connected to the first cavity (3), and the first member (1) is fixedly provided with a first portion (5) for dividing the first cavity (3).

2. A plug according to claim 1, characterized in that: The direction in which the first part (5) moves in the first cavity (3) is defined as the first direction. There are two first through holes (4), and the two first through holes (4) are respectively close to two ends of the first cavity (3) in the first direction.

3. A plug according to claim 2, characterized in that: A first sealing ring (6) is also provided between the first piece (1) and the second piece (2).

4. A plug according to claim 3, characterized in that: The second member (2) is also provided with a second through hole (7) penetrating the wall of the second member (2), and the second through hole (7) is located on a side of the first sealing ring (6) facing away from the first cavity (3).

5. A plug according to claim 4, characterized in that: A second sealing ring (8) is also provided between the first member (1) and the second member (2), and the second sealing ring (8) is located on a side of the second through hole (7) facing away from the first cavity (3).

6. A plug according to claim 1 or 5, characterized in that: A third member (9) is provided at one end of the first member (1) away from the second member (2), a slide groove is provided in the third member (9), a third sealing ring (10) and a fourth member (11) are provided in the slide groove, the fourth member (11) is slidably located in the slide groove, and one end of the fourth member (11) is pressed against the third sealing ring (10), a third through hole (12) is provided on the third member (9), the third through hole (12) is located on a side of the fourth member (11) away from the third sealing ring (10), and the third through hole (12) is connected to the slide groove.

7. A plug according to claim 6, characterized in that: One end of the third through hole (12) opens toward a side wall of the third member (9) that faces away from the third sealing ring (10).

8. A plug according to claim 6, characterized in that: The first piece (1) is provided with a ball head piece (13) connected to the third piece (9).

9. A plug according to claim 8, characterized in that: The ball head component (13) is detachably connected to the first component (1), a ball groove matching the ball head component (13) is provided in the third component (9), and the third component (9) is detachably connected to the ball head component (13) or the first component (1).

10. A plug according to claim 5, characterized in that: The first piece (1) is specifically a tubular piece, and the second piece (2) is specifically a square piece.

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