CN214999141U

CN214999141U - Worm wheel head with gas detection and alarm functions

Info

Publication number: CN214999141U
Application number: CN202120732313.1U
Authority: CN
Inventors: 李连山; 王磊
Original assignee: Tianjin Xinghang Valve Co ltd
Current assignee: Tianjin Xinghang Valve Co ltd
Priority date: 2021-04-09
Filing date: 2021-04-09
Publication date: 2021-12-03
Anticipated expiration: 2031-04-09

Abstract

The utility model relates to the technical field of valves, and a worm wheel head with gaseous alarming function that detects is disclosed, intermeshing's worm wheel and worm in casing and the casing, the fixed valve rod that has cup jointed of worm wheel, valve rod movable sleeve are equipped with the sleeve pipe, and sleeve pipe and casing fixed connection, the rubber circle is established to the intraductal fixed embedding of sleeve pipe, sheathed tube lateral wall is fixed with the gas tube that is linked together with the rubber circle, the inner wall and the outside extension of casing are run through to the other end of gas tube, be equipped with the piston in the gas tube, the outer wall of casing be fixed with piston assorted drive assembly, the outer wall of casing still is fixed with gaseous detection alarm, the inner wall of casing is fixed with two sensors that are connected with gaseous detection alarm. The utility model discloses can detect and report to the police the gas of revealing, remind the staff in time to maintain, extrude the valve rod through the rubber circle when taking place to reveal simultaneously, can prevent that gas from revealing to the casing in, improved the security.

Description

Worm wheel head with gas detection and alarm functions

Technical Field

The utility model relates to the technical field of valves, especially, relate to a worm gear head with gaseous alarming function that detects.

Background

The worm gear head is a mechanism for controlling the opening of a valve and the flow of a medium, and is widely applied to industries such as electric power, pharmacy, chemical production and the like. However, the valve often leaks from the packing of the valve stem or the flange of the valve during long-term use, and if the process gas in the pipeline is fuel gas or toxic and harmful gas, the on-site environment is in an unsafe state, and if the process gas cannot be found in time, a vicious event of personnel poisoning or ignition and explosion can be caused.

The worm gear head in the prior art only has a switching function and does not have a leakage alarm function and a prevention closing function, so that gas leakage cannot occur in time and can be prevented in time, and the use safety of the valve is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving among the prior art worm gear head only switch function and not revealing alarming function and prevention closed function to can not in time take place and in time prevent when taking place gaseous the revealing, reduced the problem of valve safety in utilization, and the worm gear head that has gaseous detection alarming function who provides.

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

the utility model provides a worm wheel head with gaseous alarming function that detects, intermeshing's worm wheel and worm in casing and the casing, the fixed cover of worm wheel has connect the valve rod, valve rod movable sleeve is equipped with the sleeve pipe, and sleeve pipe and casing fixed connection, the rubber circle is established to the intraductal fixed the inlaying of sleeve, sheathed tube lateral wall is fixed with the gas tube that is linked together with the rubber circle, the inner wall and the outside extension of casing are run through to the other end of gas tube, be equipped with the piston in the gas tube, the outer wall of casing is fixed with the drive assembly with piston assorted, the outer wall of casing still is fixed with gaseous alarm that detects, the inner wall of casing is fixed with two sensors that are connected with gaseous alarm that detects.

Preferably, drive assembly includes driving motor, threaded rod and L type connecting plate, driving motor passes through the mount pad and is fixed with the casing, and driving motor's output shaft is fixed with the one end of threaded rod, the other end of threaded rod extends to in the gas tube, L type connecting plate and threaded rod threaded connection, the lateral wall of piston is fixed with the one end of L type connecting plate.

Preferably, the outer wall of the piston is fixedly provided with a rubber gasket, and the rubber gasket is abutted to the inflation tube.

Preferably, the outer walls of the two sides of the L-shaped connecting plate are respectively fixed with a limiting block, and two limiting openings matched with the limiting blocks are symmetrically formed in the inflating tube.

Preferably, a protective cover is arranged outside the driving motor and fixed with the shell.

Preferably, the gas detection alarm and the driving motor are far away from each other.

Compared with the prior art, the utility model provides a worm-gear head with gaseous alarming function that detects possesses following beneficial effect:

1. this worm-gear head with gaseous alarming function that detects through valve rod, sleeve pipe, rubber circle, gas tube, piston, drive assembly, gaseous detection alarm and the sensor that is equipped with, can detect and report to the police the gaseous of revealing, reminds the staff in time to maintain, extrudees the valve rod through the rubber circle when revealing taking place simultaneously, can prevent that gaseous from revealing to the casing in, improved the security.

2. This worm-gear head with gaseous alarming function that detects through being equipped with the rubber gasket, can improve the seal when piston removes, and the stability that L type connecting plate removed can be improved to the stopper that the rethread was equipped with.

The part that does not relate to among the device all is the same with prior art or can adopt prior art to realize, the utility model discloses can detect and report to the police the gas of revealing, remind the staff in time to maintain, extrude the valve rod through the rubber circle when taking place to reveal simultaneously, can prevent that gas from revealing to the casing in, improved the security.

Drawings

Fig. 1 is a schematic structural view of a worm gear head with a gas detection alarm function according to the present invention;

fig. 2 is an enlarged view of a portion a of fig. 1.

In the figure: the device comprises a shell 1, a worm wheel 2, a worm 3, a valve rod 4, a sleeve 5, a rubber ring 6, an inflation tube 7, a piston 8, a gas detection alarm 9, a sensor 10, a driving motor 11, a threaded rod 12, a L-shaped connecting plate 13, a rubber gasket 14, a limiting block 15 and a protective cover 16.

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. 1-2, a worm wheel head with gas detection alarm function, including casing 1 and worm wheel 2 and worm 3 that intermesh in casing 1, worm wheel 2 is fixed to cup joint has valve rod 4, valve rod 4 activity cover is equipped with sleeve pipe 5, and sleeve pipe 5 and casing 1 fixed connection, rubber ring 6 is inlayed to the internal fixation of sleeve pipe 5, the lateral wall of sleeve pipe 5 is fixed with gas tube 7 that is linked together with rubber ring 6, the other end of gas tube 7 runs through the inner wall of casing 1 and outwards extends, be equipped with piston 8 in the gas tube 7, the outer wall of casing 1 is fixed with the drive assembly who matches with piston 8, the outer wall of casing 1 still is fixed with gas detection alarm 9, the inner wall of casing 1 is fixed with two sensors 10 that are connected with gas detection alarm 9, can detect and report to the gas, for the product among the prior art.

The driving assembly comprises a driving motor 11, a threaded rod 12 and an L-shaped connecting plate 13, the driving motor 11 is fixed with the shell 1 through a mounting seat, an output shaft of the driving motor 11 is fixed with one end of the threaded rod 12, the other end of the threaded rod 12 extends into the inflation tube 7, the L-shaped connecting plate 13 is in threaded connection with the threaded rod 12, and the side wall of the piston 8 is fixed with one end of the L-shaped connecting plate 13.

The outer wall of the piston 8 is fixedly provided with a rubber gasket 14, and the rubber gasket 14 abuts against the inflation tube 7, so that the sealing performance between the piston 8 and the inflation tube 7 is improved.

The outer walls of two sides of the L-shaped connecting plate 13 are respectively fixed with a limiting block 15, two limiting openings matched with the limiting blocks 15 are symmetrically formed in the inflating tube 7, and the position of the L-shaped connecting plate 13 can be limited through the limiting blocks 15 and the limiting openings, so that the L-shaped connecting plate can only slide.

A protective cover 16 is provided outside the drive motor 11, and the protective cover 16 is fixed to the housing 1, so that the drive motor 11 can be protected.

The gas detection alarm 9 and the driving motor 11 are far away from each other.

In the utility model, when in use, through the gas detection alarm 9 and the sensor 10, when the filler of the valve rod 4 or the flange of the valve is leaked in the long-term use process of the valve, the sensor 10 can detect the leaked gas and alarm through the gas detection alarm 9 to remind the worker to maintain in time, and then through the driving motor 11, when the gas leakage occurs, the output shaft of the driving motor 11 can drive the threaded rod 12 to rotate, because the position of the L-shaped connecting plate 13 is limited by the limiting block 15, the L-shaped connecting plate 13 can be driven to slide through the rotation of the threaded rod 12, the piston 8 is driven to move, the gas in the inflation tube 7 can be pressed into the rubber ring 6 through the movement of the piston 8, the rubber ring 6 expands and extrudes the valve rod 4, thereby preventing the valve rod 4 from rotating and the leakage of the gas, the safety of valve use has been improved.

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

1. A worm wheel head with a gas detection alarm function comprises a shell (1), and a worm wheel (2) and a worm (3) which are meshed with each other in the shell (1), and is characterized in that the worm wheel (2) is fixedly sleeved with a valve rod (4), the valve rod (4) is movably sleeved with a sleeve (5), the sleeve (5) is fixedly connected with the shell (1), a rubber ring (6) is fixedly embedded in the sleeve (5), an inflation tube (7) communicated with the rubber ring (6) is fixed on the side wall of the sleeve (5), the other end of the inflation tube (7) penetrates through the inner wall of the shell (1) and extends outwards, a piston (8) is arranged in the inflation tube (7), a driving component matched with the piston (8) is fixed on the outer wall of the shell (1), and a gas detection alarm (9) is further fixed on the outer wall of the shell (1), two sensors (10) connected with the gas detection alarm (9) are fixed on the inner wall of the shell (1).

2. The worm-gear head with the gas detection alarm function according to claim 1, wherein the driving assembly comprises a driving motor (11), a threaded rod (12) and an L-shaped connecting plate (13), the driving motor (11) is fixed with the shell (1) through a mounting seat, an output shaft of the driving motor (11) is fixed with one end of the threaded rod (12), the other end of the threaded rod (12) extends into the inflation tube (7), the L-shaped connecting plate (13) is in threaded connection with the threaded rod (12), and a side wall of the piston (8) is fixed with one end of the L-shaped connecting plate (13).

3. The worm-gear head with the gas detection alarm function according to claim 1, wherein a rubber gasket (14) is fixedly arranged on the outer wall of the piston (8), and the rubber gasket (14) is abutted to the inflation tube (7).

4. The worm-gear head with the gas detection alarm function according to claim 2, wherein the outer walls of the two sides of the L-shaped connecting plate (13) are respectively fixed with a limiting block (15), and two limiting openings matched with the limiting blocks (15) are symmetrically formed in the inflation tube (7).

5. The worm-gear head with gas detection alarm function according to claim 2, characterized in that the outside of the driving motor (11) is provided with a protective cover (16), and the protective cover (16) is fixed with the housing (1).

6. Worm-gear head with gas detection alarm function according to claim 1, characterized in that the gas detection alarm (9) is remote from the drive motor (11).