CN216161216U

CN216161216U - Filter screen replacing device of combustible gas alarm

Info

Publication number: CN216161216U
Application number: CN202122224024.3U
Authority: CN
Inventors: 姜晓波
Original assignee: Tianjin Tongluda Technology Co ltd
Current assignee: Tianjin Tongluda Technology Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-04-01
Anticipated expiration: 2031-09-14

Abstract

The utility model relates to the technical field related to gas, in particular to a filter screen replacing device of a combustible gas alarm, which is convenient to replace a filter screen by arranging the device, has simpler operation, saves a large amount of labor and time and improves the working efficiency; the novel detection device comprises a housin, detection device, the rotary drum, the bull stick, the screw rod, the clip, the filter screen, the fixed plate, pressing plates, the worm wheel, worm and pivot, detection device installs in the inside left side of casing, detection device right-hand member intercommunication is provided with the induction port, the rotary drum passes through the bull stick rotatable mounting on the casing top, the rotary drum is located inside the casing, the inside screw thread that is provided with of rotary drum, the rotary drum is connected with the screw rod spiral shell dress, the clip is installed in the screw rod bottom, pivot front end and casing inside wall rotatable coupling, the pivot rear end passes the casing rear end and extends the casing outside, pivot and casing rotatable coupling, casing bottom intercommunication sets up changes the mouth, it corresponds with the filter screen position to change the mouth, the induction port under the normal conditions, filter screen and clamp plate contact.

Description

Filter screen replacing device of combustible gas alarm

Technical Field

The utility model relates to the technical field related to gas, in particular to a filter screen replacing device of a combustible gas alarm.

Background

The combustible gas alarm is also called as a gas leakage detection alarm instrument. When combustible gas leaks in industrial environment and daily life environment and the combustible gas alarm detects that the concentration of the combustible gas reaches the alarm value set by the alarm, the combustible gas alarm can send out sound and light alarm signals to remind people of taking safety measures of evacuation, forced air exhaust, equipment shutdown and the like.

The existing combustible gas alarm is internally provided with a filter screen, the filter screen plays a role in filtering air, the filter screen needs to be replaced regularly, the existing method for replacing the filter screen is to integrally disassemble the combustible gas alarm, then replace the filter screen and then install the combustible gas alarm, the method is complex in operation, the filter screen is inconvenient to replace, and the working efficiency is low.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides the filter screen replacing device of the combustible gas alarm, which is convenient for replacing the filter screen, has simpler operation, saves a large amount of labor and time and improves the working efficiency.

The utility model relates to a filter screen replacing device of a combustible gas alarm, which comprises a shell, a detection device, a rotary drum, a rotary rod, a screw rod, a clamp, a filter screen, a fixed plate, a pressing plate, a worm wheel, a worm and a rotary shaft, wherein the detection device is arranged on the left side inside the shell, the right end of the detection device is communicated with an air suction port, the rotary drum is rotatably arranged on the top end of the shell through the rotary rod, the rotary drum is positioned inside the shell, threads are arranged inside the rotary drum, the rotary drum is in threaded connection with the screw rod, the clamp is arranged at the bottom end of the screw rod, the front side wall and the rear side wall inside the shell are both provided with sliding grooves, the front end and the rear end of the clamp both slide in two groups of sliding grooves of the shell, the filter screen is fixed on the screw rod through the clamp, the fixed plate is arranged on the right side of the top end of the shell, the pressing plate is in threaded connection with the lower part of the fixed plate, the middle part of the pressing plate is communicated with a plurality of air guide holes, the worm wheel is arranged at the right end of the pressing plate, the worm is arranged on the rotary shaft, the worm meshes with the worm wheel mutually, and pivot front end and casing inside wall rotatable coupling, the pivot rear end passes the casing rear end and extends the casing outside, pivot and casing rotatable coupling, and casing bottom intercommunication sets up changes the mouth, changes the mouth and corresponds with the filter screen position, and gas absorption mouth, filter screen and clamp plate contact under the normal condition.

The filter screen replacing device of the combustible gas alarm further comprises a door and a rotating piece, wherein the door is rotatably arranged at a replacing opening at the bottom end of the shell through the rotating piece.

The filter screen replacing device of the combustible gas alarm further comprises a spring, wherein the spring is installed on the lower portion of the right end of the detection device, and the bottom end of the spring is connected with the top end of the door.

The filter screen replacing device of the combustible gas alarm further comprises a shell door and a hinge, wherein an opening is formed in the right end of the shell in a communicating mode, the shell door is rotatably installed at the opening through the hinge, a plurality of groups of air inlet holes are formed in the lower portion of the shell door in a communicating mode, and the plurality of groups of air inlet holes correspond to the position of the pressing plate.

The filter screen replacing device of the combustible gas alarm further comprises a first handle, and the first handle is mounted at the top end of the rotating rod.

The filter screen replacing device of the combustible gas alarm further comprises a second handle, and the second handle is installed at the rear end of the rotating shaft.

According to the filter screen replacing device of the combustible gas alarm, the first handle and the second handle are both provided with the anti-slip pads.

According to the filter screen replacing device of the combustible gas alarm, the sliding grooves in the front side wall and the rear side wall of the shell are coated with the lubricating layers.

Compared with the prior art, the utility model has the beneficial effects that: when the filter screen needs to be replaced, the rotating shaft is rotated to drive the worm to rotate, the worm is meshed with the worm wheel, the worm wheel drives the pressing plate to rotate, the pressing plate is screwed with the fixing plate, the pressing plate moves rightwards to be separated from the filter screen, then the rotating cylinder is rotated through the rotating rod, the rotating cylinder is screwed with the screw rod, the screw rod drives the filter screen to move downwards through the clamp, the filter screen penetrates through the replacing port to be positioned outside the shell, then a worker presses the clamp to remove the filter screen, then another new group of filter screen is fixed on the screw rod through the clamp, then the rotating rod is rotated reversely, the rotating rod drives the rotating cylinder to rotate reversely, the rotating cylinder is screwed with the screw rod, the screw rod drives the filter screen to move upwards through the clamp, the filter screen penetrates through the replacing port to enter the shell, so that the positions of the filter screen, the air suction port and the pressing plate correspond to each other positions of the filter screen, then the rotating shaft is rotated reversely, the rotating shaft drives the worm to rotate reversely, the worm then meshes with the worm wheel, and the worm wheel then drives clamp plate antiport, and the clamp plate then with fixed plate spiral shell dress, the clamp plate then move left to with the filter screen contact, the filter screen then with the induction port contact to accomplish the change to the filter screen, through setting up this equipment, be convenient for change the filter screen, the operation is simpler, saves a large amount of manual works and time, improves its work efficiency.

Drawings

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

FIG. 2 is a schematic left side sectional view of the structure of FIG. 1;

FIG. 3 is a schematic diagram of the right side view of the structure of FIG. 1;

FIG. 4 is an enlarged schematic view of A in FIG. 1;

in the drawings, the reference numbers: 1. a housing; 2. a detection device; 3. an air suction port; 4. a rotating drum; 5. a rotating rod; 6. a screw; 7. a clip; 8. a filter screen; 9. a fixing plate; 10. pressing a plate; 11. a worm gear; 12. a worm; 13. a rotating shaft; 14. a door; 15. rotating the workpiece; 16. a spring; 17. a housing door; 18. a hinge; 19. an air inlet; 20. a first handle; 21. a second handle.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

As shown in fig. 1 to 4, the filter screen replacing device of a combustible gas alarm of the utility model comprises a shell 1, a detection device 2, a rotary drum 4, a rotary rod 5, a screw rod 6, a clamp 7, a filter screen 8, a fixed plate 9, a pressure plate 10, a worm wheel 11, a worm 12 and a rotary shaft 13, wherein the detection device 2 is arranged at the left side inside the shell 1, the right end of the detection device 2 is communicated with an air suction port 3, the rotary drum 4 is rotatably arranged at the top end of the shell 1 through the rotary rod 5, the rotary drum 4 is positioned inside the shell 1, the rotary drum 4 is internally provided with threads, the rotary drum 4 is in threaded connection with the screw rod 6, the clamp 7 is arranged at the bottom end of the screw rod 6, the front side wall and the rear side wall inside the shell 1 are both provided with sliding grooves, the front end and the rear end of the clamp 7 both slide in the two groups of sliding grooves of the shell 1, the filter screen 8 is fixed on the screw rod 6 through the clamp 7, the fixed plate 9 is arranged at the right side of the top end of the shell 1, the pressure plate 10 is in threaded connection with the lower part of the fixed plate 9, the middle of the pressing plate 10 is communicated with a plurality of groups of air guide holes, a worm wheel 11 is installed at the right end of the pressing plate 10, a worm 12 is installed on a rotating shaft 13, the worm 12 is meshed with the worm wheel 11, the front end of the rotating shaft 13 is rotatably connected with the inner front side wall of the shell 1, the rear end of the rotating shaft 13 penetrates through the rear end of the shell 1 and extends to the outer side of the shell 1, the rotating shaft 13 is rotatably connected with the shell 1, the bottom end of the shell 1 is communicated with a replacing port, the replacing port corresponds to the position of the filter screen 8, and the air suction port 3, the filter screen 8 and the pressing plate 10 are in contact under normal conditions; when the filter screen 8 needs to be replaced, the rotating shaft 13 is rotated, the rotating shaft 13 drives the worm 12 to rotate, the worm 12 is meshed with the worm wheel 11, the worm wheel 11 drives the pressing plate 10 to rotate, the pressing plate 10 is screwed with the fixing plate 9, the pressing plate 10 moves rightwards to be separated from the filter screen 8, then the rotating cylinder 4 is rotated through the rotating rod 5, the rotating cylinder 4 is screwed with the screw rod 6, the screw rod 6 drives the filter screen 8 to move downwards through the clamp 7, the filter screen 8 passes through the replacing opening and is positioned on the outer side of the shell 1, then a worker removes the filter screen 8 by pressing the clamp 7, then fixes another new set of filter screen 8 on the screw rod 6 through the clamp 7, then reversely rotates the rotating rod 5, the rotating rod 5 drives the rotating cylinder 4 to reversely rotate, the rotating cylinder 4 is screwed with the screw rod 6, the screw rod 6 drives the filter screen 8 to move upwards through the clamp 7, and the filter screen 8 passes through the replacing opening and enters the shell 1, thereby make filter screen 8 correspond with induction port 3 and clamp plate 10's position, then antiport pivot 13, pivot 13 then drives worm 12 antiport, worm 12 then meshes with worm wheel 11, worm wheel 11 then drives clamp plate 10 antiport, clamp plate 10 then with the spiral shell dress of fixed plate 9, clamp plate 10 then moves left to contact with filter screen 8, filter screen 8 then contacts with induction port 3, thereby accomplish the change to filter screen 8, through setting up this equipment, be convenient for change filter screen 8, the operation is simpler, save a large amount of manual works and time, improve its work efficiency.

The filter screen replacing device of the combustible gas alarm further comprises a door 14 and a rotating piece 15, wherein the door 14 is rotatably arranged at a replacing opening at the bottom end of the shell 1 through the rotating piece 15; by providing the door 14 and the rotating member 15, not only the entry of dust into the interior of the housing 1 can be prevented, but also the overall appearance of the housing 1 can be improved.

The filter screen replacing device of the combustible gas alarm further comprises a spring 16, wherein the spring 16 is arranged at the lower part of the right end of the detection device 2, and the bottom end of the spring 16 is connected with the top end of the door 14; through setting up spring 16, when filter screen 8 downstream and door 14 contact, spring 16 then takes place elastic deformation, and filter screen 8 then drives door 14 and opens, and after filter screen 8 had been changed and has entered into casing 1, spring 16 then pulls door 14 and resets, can make door 14 automatic re-setting, improves the practicality.

The filter screen replacing device of the combustible gas alarm further comprises a shell door 17 and a hinge 18, wherein an opening is formed in the right end of the shell 1 in a communicating mode, the shell door 17 is rotatably installed at the opening through the hinge 18, a plurality of groups of air inlet holes 19 are formed in the lower portion of the shell door 17 in a communicating mode, and the plurality of groups of air inlet holes 19 correspond to the pressure plate 10 in position; through setting up casing door 17, hinge 18 and inlet port 19, the staff of being convenient for observes the in service behavior of filter screen 8.

The filter screen replacing device of the combustible gas alarm further comprises a first handle 20, wherein the first handle 20 is arranged at the top end of the rotating rod 5; by providing a first handle 20, the operation of the turning bar 5 is facilitated.

The filter screen replacing device of the combustible gas alarm further comprises a second handle 21, wherein the second handle 21 is arranged at the rear end of the rotating shaft 13; by providing the second handle 21, the operation of the rotating shaft 13 is facilitated.

According to the filter screen replacing device of the combustible gas alarm, the first handle 20 and the second handle 21 are both provided with anti-skid pads; the frictional force of the first and

second handles

20 and 21 can be increased to facilitate the manipulation of the first and

second handles

20 and 21.

According to the filter screen replacing device of the combustible gas alarm, the sliding grooves in the front side wall and the rear side wall of the shell 1 are coated with the lubricating layers; can act as a lubrication for the clip 7.

The utility model relates to a filter screen replacing device of a combustible gas alarm, which works, when a filter screen 8 needs to be replaced, firstly, a rotating shaft 13 is rotated, the rotating shaft 13 drives a worm 12 to rotate, the worm 12 is meshed with a worm wheel 11, the worm wheel 11 drives a pressing plate 10 to rotate, the pressing plate 10 is screwed with a fixed plate 9, the pressing plate 10 moves rightwards to be separated from the filter screen 8, then a rotating cylinder 4 is rotated through a rotating rod 5, the rotating cylinder 4 is screwed with a screw rod 6, the screw rod 6 drives the filter screen 8 to move downwards through a clamp 7, the filter screen 8 passes through a replacing opening to be positioned at the outer side of a shell 1, then a worker removes the filter screen 8 by pressing the clamp 7, then another new group of filter screens 8 is fixed on the screw rod 6 through the clamp 7, then the rotating rod 5 rotates reversely, the rotating rod 5 drives the rotating cylinder 4 to rotate reversely, the rotating cylinder 4 is screwed with the screw rod 6, the screw rod 6 drives the filter screen 8 to move upwards through the clamp 7, the filter screen 8 then passes and changes the mouth and enter into inside 1 casing to make filter screen 8 correspond with the position of induction port 3 and clamp plate 10, then antiport pivot 13, pivot 13 then drives worm 12 antiport, worm 12 then meshes with worm wheel 11, worm wheel 11 then drives clamp plate 10 antiport, clamp plate 10 then with fixed plate 9 spiral shell dress, clamp plate 10 then moves left to contact with filter screen 8, filter screen 8 then contacts with induction port 3, thereby the completion is to the change of filter screen 8 can.

According to the filter screen replacing device of the combustible gas alarm, the installation mode, the connection mode or the arrangement mode are common mechanical modes, and the filter screen replacing device can be implemented as long as the beneficial effects of the filter screen replacing device can be achieved; the detection device 2 of the filter screen replacing device of the combustible gas alarm is purchased from the market, and technicians in the industry only need to install and operate according to the attached operating instructions.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A filter screen replacing device of a combustible gas alarm is characterized by comprising a shell (1), a detection device (2), a rotary drum (4), a rotary rod (5), a screw rod (6), a clamp (7), a filter screen (8), a fixing plate (9), a pressing plate (10), a worm wheel (11), a worm (12) and a rotary shaft (13), wherein the detection device (2) is arranged on the left side inside the shell (1), the right end of the detection device (2) is communicated with an air suction port (3), the rotary drum (4) is rotatably arranged at the top end of the shell (1) through the rotary rod (5), the rotary drum (4) is positioned inside the shell (1), threads are arranged inside the rotary drum (4), the rotary drum (4) is in threaded connection with the screw rod (6), the clamp (7) is arranged at the bottom end of the screw rod (6), sliding chutes are formed in the front side wall and the rear side wall inside the shell (1), the front end and the rear end of the clamp (7) both slide in two groups of the sliding chutes of the shell (1), filter screen (8) are fixed on screw rod (6) through clip (7), install on casing (1) top right side fixed plate (9), clamp plate (10) are connected with fixed plate (9) lower part spiral shell dress, clamp plate (10) middle part intercommunication is provided with the multiunit air guide hole, worm wheel (11) are installed at clamp plate (10) right-hand member, worm (12) are installed on pivot (13), worm (12) mesh with worm wheel (11), pivot (13) front end and casing (1) interior preceding lateral wall rotatable coupling, pivot (13) rear end passes casing (1) rear end and extends the casing (1) outside, pivot (13) and casing (1) rotatable coupling, casing (1) bottom intercommunication sets up changes the mouth, it corresponds with filter screen (8) position to change the mouth, inhale gas mouth (3) under the normal condition, filter screen (8) and clamp plate (10) contact.

2. A combustible gas alarm screen changer according to claim 1, characterised in that it further comprises a door (14) and a rotary member (15), the door (14) being rotatably mounted at a change port at the bottom end of the housing (1) by means of the rotary member (15).

3. The filter screen replacing device of the combustible gas alarm device according to claim 2, characterized by further comprising a spring (16), wherein the spring (16) is arranged at the lower part of the right end of the detection device (2), and the bottom end of the spring (16) is connected with the top end of the door (14).

4. The filter screen replacing device of the combustible gas alarm device according to claim 3, further comprising a shell door (17) and a hinge (18), wherein an opening is formed in the right end of the shell (1) in a communicating mode, the shell door (17) is rotatably installed at the opening through the hinge (18), a plurality of groups of air inlet holes (19) are formed in the lower portion of the shell door (17) in a communicating mode, and the plurality of groups of air inlet holes (19) correspond to the pressure plate (10) in position.

5. A combustible gas alarm screen changer according to claim 4 characterised in that it further comprises a first handle (20), the first handle (20) being mounted on the top end of the rotary bar (5).

6. A combustible gas alarm screen changer according to claim 5 further comprising a second handle (21), the second handle (21) being mounted on the rear end of the shaft (13).

7. A combustible gas alarm screen changer according to claim 6 characterised in that the first handle (20) and the second handle (21) are provided with non-slip pads.

8. A combustible gas alarm screen changer according to claim 7 characterised in that the housing (1) has lubricating coatings on the front and rear walls of the chute.