CN209820709U - Air-tight device - Google Patents

Abstract

The utility model discloses an airtight device, including airtight piece and rubber tube, the airtight piece inner chamber has been seted up to the inside of airtight piece, and the bottom fixedly connected with bolt of airtight piece, be provided with the air guide inner chamber between airtight piece and the bolt, the air vent has been seted up to the bottom of bolt, the inner wall fixedly connected with fixed block of airtight piece inner chamber, the upper end fixedly connected with atmospheric pressure detector of fixed block, the inner wall top fixedly connected with clear glass pipe of atmospheric pressure detector, the first fixed key of outer wall one side fixedly connected with of clear glass pipe, and the outer wall opposite side fixedly connected with second fixed key of clear glass pipe, the outside cover of clear glass pipe has the rubber tube, first keyway has been seted up to inner wall one side of rubber tube. The utility model discloses in when the gas tightness of object reduces, make the atmospheric pressure of airtight piece inner chamber reduce, make the liquid level decline of the intraductal red solution of transparent glass to the person of facilitating the use detects the leakproofness of airtight piece.

Description

Air-tight device

Technical Field

The utility model relates to the technical field of machinery, especially, relate to an airtight device.

Background

At present, large rotating machinery is running more and more, such as a turbo generator set, a hydro-turbo generator set and the like, large rotating machinery equipment is designed with a bearing box, a large amount of lubricating oil needs to be placed in the bearing box to lubricate and dissipate heat of a bearing bush, and because a dynamic and static joint needs to be sealed, the large rotating machinery adopts a comb-tooth type structure, a contact type seal, a labyrinth type seal and other forms at present. Over time, the glow causes the sealing effect of the gastight member to diminish.

When the existing airtight piece leaks, a user is difficult to be reminded that the airtight piece leaks, and the user is inconvenient to replace the airtight piece.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the airtight piece is difficult to remind the user of air leakage when the device generates air leakage, and the inconvenient user changes the defect of the airtight piece, and providing the airtight device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an airtight device comprises an airtight piece and a rubber cylinder, wherein an inner cavity of the airtight piece is formed inside the airtight piece, a bolt is fixedly connected to the bottom end of the airtight piece, an air guide inner cavity is arranged between the airtight piece and the bolt, an air vent is formed in the bottom end of the bolt, a fixed block is fixedly connected to the inner wall of the inner cavity of the airtight piece, an air pressure detector is fixedly connected to the upper end of the fixed block, a transparent glass tube is fixedly connected to the top end of the inner wall of the air pressure detector, a first fixed key is fixedly connected to one side of the outer wall of the transparent glass tube, a second fixed key is fixedly connected to the other side of the outer wall of the transparent glass tube, the rubber cylinder is sleeved outside the transparent glass tube, a first key groove is formed in one side of the inner wall of the rubber cylinder, a second key groove is formed in, the bottom fixedly connected with fixed column of rubber cylinder, the bottom fixedly connected with rubber slide of fixed column, rubber slide is located the inside of fixed block.

Preferably, a through hole is formed in the bottom end of the fixing block, an external thread is formed in the outer side of the fixing block, and the inner diameter of the through hole is equal to the diameter of the rubber sliding block.

Preferably, an internal thread is formed in the inner cavity of the airtight piece, and the inner cavity of the airtight piece is rotatably connected with the fixed block through the thread.

Preferably, a quantitative red solution is placed in the inner cavity of the rubber cylinder.

Preferably, the inner cavity of the airtight piece is communicated with the vent hole through the air guide inner cavity.

Preferably, the outer side wall of the bolt is provided with an external thread.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses in fix the airtight piece on the object that needs to seal, when the gas tightness of object reduces, make the atmospheric pressure of airtight piece inner chamber reduce, making the rubber block move down in the inner chamber that the fixed block was seted up, make the rubber block slider drive the fixed column and move down, the fixed column drives the rubber tube and moves down to make the liquid level of the intraductal red solution of transparent glass descend, thereby the person of facilitating the use detects the leakproofness of airtight piece.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the structure of the present invention;

fig. 3 is a schematic diagram of the rubber cylinder structure of the present invention.

In the figure: 1. an airtight member; 2. a rubber cylinder; 3. a transparent glass tube; 4. an air pressure detector; 5. fixing a column; 6. a fixed block; 7. a rubber slider; 8. an inner cavity of the airtight piece; 9. a bolt; 10. an air guide inner cavity; 11. a vent hole; 12. a first fixed key; 13. a second fixed key; 14. a first keyway; 15. a second keyway.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, an airtight device comprises an airtight piece 1 and a rubber cylinder 2, an airtight piece inner cavity 8 is formed inside the airtight piece 1, a bolt 9 is fixedly connected to the bottom end of the airtight piece 1, an air guide inner cavity 10 is formed between the airtight piece 1 and the bolt 9, an air vent 11 is formed at the bottom end of the bolt 9, a fixed block 6 is fixedly connected to the inner wall of the airtight piece inner cavity 8, an air pressure detector 4 is fixedly connected to the upper end of the fixed block 6, a transparent glass tube 3 is fixedly connected to the top end of the inner wall of the air pressure detector 4, a first fixed key 12 is fixedly connected to one side of the outer wall of the transparent glass tube 3, a second fixed key 13 is fixedly connected to the other side of the outer wall of the transparent glass tube 3, the rubber cylinder 2 is sleeved outside the transparent glass tube 3, a first key groove 14 is formed on one side, the inside cover of second keyway 15 has first fixed key 12, and the bottom fixedly connected with fixed column 5 of rubber tube 2, the bottom fixedly connected with rubber slide 7 of fixed column 5, and rubber slide 7 is located the inside of fixed block 6.

The through-hole has been seted up to the bottom of fixed block 6, and the outside of fixed block 6 has seted up the external screw thread, the internal diameter of through-hole equals with the diameter of rubber slider 7, the internal thread has been seted up to the inside of airtight piece inner chamber 8, and airtight piece inner chamber 8 passes through the screw thread rotation with fixed block 6 and is connected, red solution has been placed to the inner chamber of rubber cylinder 2, airtight piece inner chamber 8 passes through air guide inner chamber 10 through connections with air vent 11, the external screw thread has been seted up to the lateral wall.

The working principle is as follows: the airtight piece 1 is fixed on an object to be sealed, when the air tightness of the object is reduced, the air pressure in the inner cavity 8 of the airtight piece is reduced, the rubber slide block 7 moves downwards in the inner cavity formed by the fixed block 6, the rubber slide block 7 drives the fixed column 5 to move downwards, and the fixed column 5 drives the rubber cylinder 2 to move downwards, so that the liquid level of the red solution in the transparent glass tube 3 is lowered, and a user can conveniently detect the tightness of the airtight piece.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. An airtight device comprises an airtight piece (1) and a rubber cylinder (2), and is characterized in that an airtight piece inner cavity (8) is formed in the airtight piece (1), a bolt (9) is fixedly connected to the bottom end of the airtight piece (1), an air guide inner cavity (10) is arranged between the airtight piece (1) and the bolt (9), an air vent (11) is formed in the bottom end of the bolt (9), a fixing block (6) is fixedly connected to the inner wall of the airtight piece inner cavity (8), an air pressure detector (4) is fixedly connected to the upper end of the fixing block (6), a transparent glass tube (3) is fixedly connected to the top end of the inner wall of the air pressure detector (4), a first fixing key (12) is fixedly connected to one side of the outer wall of the transparent glass tube (3), and a second fixing key (13) is fixedly connected to the other side of the outer wall of the transparent, the outer cover of transparent glass pipe (3) has rubber barrel (2), first keyway (14) have been seted up to the inner wall one side of rubber barrel (2), and the inner wall opposite side of rubber barrel (2) has seted up second keyway (15), the inside cover of second keyway (15) has first fixed key (12), the bottom fixedly connected with fixed column (5) of rubber barrel (2), the bottom fixedly connected with rubber slide (7) of fixed column (5), rubber slide (7) are located the inside of fixed block (6).

2. The airtight device according to claim 1, wherein the bottom end of the fixed block (6) is provided with a through hole, the outer side of the fixed block (6) is provided with an external thread, and the inner diameter of the through hole is equal to the diameter of the rubber sliding block (7).

3. The airtight device according to claim 2, wherein the inner cavity (8) of the airtight member is internally provided with internal threads, and the inner cavity (8) of the airtight member is rotatably connected with the fixed block (6) through the threads.

4. An airtight device, according to claim 1, characterized in that the inner cavity of said rubber cylinder (2) is filled with a measured quantity of red solution.

5. An air-tight device according to claim 1, characterized in that the air-tight member chamber (8) is connected to the air vent (11) via an air-conducting chamber (10).

6. An air-tight device according to claim 1, characterized in that the outer side wall of the bolt (9) is externally threaded.