CN216143165U

CN216143165U - Air-tight plug

Info

Publication number: CN216143165U
Application number: CN202121936533.2U
Authority: CN
Inventors: 李潺; 李�荣; 袁玲燕
Original assignee: Hunan Imisen Machinery Technology Co ltd
Current assignee: Hunan Imisen Machinery Technology Co ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-03-29
Anticipated expiration: 2031-08-19

Abstract

The utility model relates to an air-tightness plug which comprises a plug and a first expansion block, wherein the first expansion block is arranged on the outer side of the left end of the plug, and the radius of an inner groove of the first expansion block is the same as that of the first expansion block. The utility model overcomes the defects of the prior art, the four expansion blocks with the same size are arranged, the rotating joint ejection core enables the four expansion blocks to move radially, the plug and the unthreaded hole of the tested part are connected in a tensioning mode, an additional structure is not needed, the operation is simple and convenient, the production cost can be reduced to a certain extent, the expansion blocks can be suitable for most of tested parts as long as the diameters of the expansion blocks and the plug are consistent, the application range of the device can be effectively improved, the sealing rings are arranged in the grooves of the plug and the joint ejection core, the sealing rings enable the plug and the hole to be sealed, no leakage exists, the accurate and reliable test is ensured, and the practical use is facilitated.

Description

Air-tight plug

Technical Field

The utility model relates to the technical field of air tightness testing when a connecting hole of a part, a component or a product is a unthreaded hole, in particular to an air tightness plug.

Background

The common connection mode in the industry at present is as follows: external force is provided through the cylinder or the quick clamp, so that the connecting joint or the smelting tool is connected with the tested product in a sealing mode, and the sealing test effect is achieved.

But current gas tightness end cap need provide external force through cylinder or quick clamp for need use additional structure to carry out effective connection shutoff test port, the structure is complicated, it is comparatively inconvenient to lead to using and removing, and use cylinder or quick clamp to carry out the shutoff connecting hole and can't be applicable to comparatively complicated test part, and current gas tightness end cap recess more leads to still can having certain gap, can reduce the accuracy of test result, be unfavorable for actual use.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides the following technical scheme:

the air-tight plug comprises a plug and a first expansion block, and the first expansion block is arranged on the outer side of the left end of the plug;

the radius of the inner groove of the first expansion block is the same as that of the first expansion block.

Preferably, the right side of the first tight piece that expands is installed the second and is expanded tight piece, the right side of the tight piece that expands of second is installed the third and is expanded tight piece, and first tight piece that expands, the tight piece that expands of second and the tight piece that expands of third all are horizontal equidistance and distribute.

Preferably, an O-ring is arranged in a groove at the left end of the first expansion block, a second sealing ring is arranged in a groove at the right side of the first expansion block, and a first sealing ring with the same size as the second sealing ring is arranged in a groove at the right side of the second expansion block.

Preferably, the inside of end cap rotates and is connected with the joint plunger tip, the fourth bloated tight piece of installing in the left end outside of joint plunger tip, be provided with the third sealing washer in the right side recess of the bloated tight piece of fourth.

Preferably, first bloated tight piece, the tight piece of second bloated, the tight piece of third bloated and the tight piece of fourth bloated is radial movement setting.

Preferably, the inside of end cap installs the spliced pole, the spliced pole agrees with each other with the left port footpath size of joint ejector core, and the inner wall of end cap is vertical equidistance and is provided with the swivelling chute.

The utility model has the advantages of

The embodiment of the utility model provides an airtight plug, which has the following beneficial effects: the utility model overcomes the defects of the prior art, the four expansion blocks with the same size are arranged, the rotating joint ejection core enables the four expansion blocks to move radially, the plug and the unthreaded hole of the tested part are connected in a tensioning mode, an additional structure is not needed, the operation is simple and convenient, the production cost can be reduced to a certain extent, the expansion blocks can be suitable for most of tested parts as long as the diameters of the expansion blocks and the plug are consistent, the application range of the device can be effectively improved, the sealing rings are arranged in the grooves of the plug and the joint ejection core, the sealing rings enable the plug and the hole to be sealed, no leakage exists, the accurate and reliable test is ensured, and the practical use is facilitated.

1. Through setting up first bloated tight piece, the tight piece that expands of second, the tight piece that expands of third and the tight piece that expands of fourth, the manual rotary joint ejector core of user, the tight piece atress that expands of fourth that connects the installation of ejector core left end outside carries out the radial movement and outwards expands, the tight piece that expands of first bloated of end cap left end outside installation, the tight piece that expands of second, the tight piece that expands of third is under the external force that the rotatory and the tight piece radial movement of fourth expansion of joint ejector core brought, carry out the radial movement outwards expansion simultaneously, make end cap and measured part unthreaded hole rise tight connection, make the device be connected through the tight power that expands with measured part, do not need plus structure, and is simple and convenient to operate, can reduce manufacturing cost to a certain extent, as long as tight piece that expands can be applicable to most of test parts with end cap aperture unanimity, can effectively improve the device's application scope, be favorable to actual use.

2. Through setting up first sealing washer and second sealing washer and third sealing washer, all be provided with first sealing washer and second sealing washer in the end cap left end recess, wherein be provided with O type circle in the left end recess of the tight piece of first bloated, can make and accomplish sealedly between end cap and the hole, be provided with the third sealing washer in the recess that connects the apical core, improve the leakproofness between joint apical core and end cap, make the tight piece of fourth bloated in the joint apical core outside can just provide external force to other three bloated tight pieces, improve the reaction rate of four bloated tight piece atresss, be favorable to actual use.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a joint core structure of the present invention;

fig. 3 is a schematic view of the internal structure of the plug of the present invention.

In the figure: 1. a plug; 2. a first expansion block; 3. a second expansion block; 4. a third expansion block; 5. a first seal ring; 6. a second seal ring; 7. an O-shaped ring; 8. a joint tip core; 9. a fourth expansion block; 10. a third seal ring; 11. connecting columns; 12. a rotating trough.

Detailed Description

The technical solution of the present invention is further described with reference to the accompanying drawings and examples.

As shown in fig. 1, fig. 1 shows an airtight plug of the present invention, which includes a plug 1 and a first expansion block 2, the first expansion block 2 is installed at the outer side of the left end of the plug 1, and the radius of an inner groove of the first expansion block 2 is the same as that of the first expansion block 2, so that the first expansion block 2 can be pushed by the rotation of a joint top core 8 in time to radially move and expand outwards, which is beneficial to practical use.

As shown in fig. 1 and 2, the right side of the first tight piece of bloating 2 is installed the second and is bloated tight piece 3, the right side of the tight piece 3 that expands of second is installed the third and is bloated tight piece 4, first tight piece 2 that expands, the tight piece 3 that expands of second, the tight piece 4 that expands of third is under the external force that the tight piece 9 radial movement of joint apical core 8 rotation and fourth bloated brings, carry out the outside inflation of radial movement simultaneously, make end cap 1 with survey part unthreaded hole rise and tightly be connected, make the device be connected through the bloated tight power with survey part, need not add additional structure, and is easy and simple to handle, and is favorable to actual use.

As shown in fig. 1, a first sealing ring 5 and a second sealing ring 6 are arranged in a groove at the left end of the plug 1, and an O-ring 7 is arranged in a groove at the left end of the first expansion block 2, so that the sealing between the plug 1 and the hole can be completed, and the practical use is facilitated.

As shown in fig. 1 and 2, the fourth bloated tight piece 9 of expanding is installed in the left end outside of joint ejector core 8, the fourth bloated tight piece 9 atress carries out radial movement under the rotation of joint ejector core 8, be provided with third sealing washer 10 in the right side recess of the bloated tight piece 9 of fourth, can effectively improve the leakproofness between joint ejector core 8 and end cap 1, make the bloated tight piece 9 of fourth in the joint ejector core 8 outside can just provide external force to other three bloated tight pieces, improve the reaction rate of four bloated tight piece atresss, be favorable to actual use.

As shown in fig. 1 and 2, first bloated tight piece 2, the tight piece 3 that expands of second, the tight piece 4 that expands of third and the tight piece 9 that expands of fourth are the radial movement setting, the manual rotary joint ejector core 8 of user, the tight piece 9 atress that expands of the tight piece of fourth of 8 left ends outside installations of joint ejector core carries out the outside inflation of radial movement, the cooperation connects ejector core 8 to drive first bloated tight piece 2, the tight piece 3 that expands of second, the tight piece 4 that expands of third and carries out the outside inflation of radial movement simultaneously, be favorable to actual use.

As shown in fig. 3, the internal mounting of the plug 1 has the connecting column 11, so that the connecting column 11 can be just inserted into the left end groove of the joint ejection core 8, the connection tightness is improved, the inner wall of the plug 1 is provided with the rotating grooves 12 at equal intervals, the joint ejection core 8 can rotate at a constant speed in the internal part of the plug 1, and the practical use is facilitated.

In the utility model, through arranging the first expansion block 2, the second expansion block 3, the third expansion block 4 and the fourth expansion block 9, a user manually rotates the joint top core 8, the fourth expansion block 9 arranged outside the left end of the joint top core 8 is forced to move radially and expand outwards, the first expansion block 2, the second expansion block 3 and the third expansion block 4 arranged outside the left end of the plug 1 simultaneously move radially and expand outwards under the external force brought by the rotation of the joint top core 8 and the radial movement of the fourth expansion block 9, so that the plug 1 is in tension connection with the unthreaded hole of the tested part, the device is connected with the tested part through the expansion force, an additional structure is not needed, the operation is simple and convenient, the production cost can be reduced to a certain extent, the expansion block can be suitable for most of tested parts as long as the pore diameters of the expansion block and the plug 1 are consistent, the application range of the device can be effectively improved, and the practical use is facilitated, through setting up first sealing washer 5 and second sealing washer 6 and third sealing washer 10, all be provided with first sealing washer 5 and second sealing washer 6 in the 1 left end recess of end cap, wherein be provided with O type circle 7 in the left end recess of the tight piece 2 of first bloated, can make and accomplish sealedly between end cap 1 and the hole, be provided with third sealing washer 10 in the recess of joint ejector core 8, improve the leakproofness between joint ejector core 8 and end cap 1, make the tight piece 9 of fourth bloated in the 8 outsides of joint ejector core can just provide external force to other three bloated tight pieces, improve the reaction rate of the tight piece atress of four bloations, be favorable to actual use.

Claims

1. The air-tight plug comprises a plug (1) and a first expansion block (2), and is characterized in that the first expansion block (2) is installed on the outer side of the left end of the plug (1);

the radius of an inner groove of the first expansion block (2) is the same as that of the first expansion block (2).

2. The airtight plug according to claim 1, wherein a second expansion block (3) is installed on the right side of the first expansion block (2), a third expansion block (4) is installed on the right side of the second expansion block (3), and the first expansion block (2), the second expansion block (3) and the third expansion block (4) are all distributed in a transverse equidistant mode.

3. The airtight plug according to claim 2, wherein an O-ring (7) is arranged in a groove at the left end of the first expansion block (2), a second sealing ring (6) is arranged in a groove at the right side of the first expansion block (2), and a first sealing ring (5) with the same size as the second sealing ring (6) is arranged in a groove at the right side of the second expansion block (3).

4. The airtight plug according to claim 1, wherein a joint top core (8) is rotatably connected inside the plug (1), a fourth expansion block (9) is installed on the outer side of the left end of the joint top core (8), and a third sealing ring (10) is arranged in a right groove of the fourth expansion block (9).

5. The airtight plug according to claim 1, wherein the first expansion block (2), the second expansion block (3), the third expansion block (4) and the fourth expansion block (9) are all arranged in a radially moving manner.

6. The airtight plug according to claim 1, wherein a connecting column (11) is installed inside the plug (1), the connecting column (11) and the left port of the joint top core (8) are matched with each other in diameter, and the inner wall of the plug (1) is provided with rotating grooves (12) at equal intervals in the longitudinal direction.