CN113781750A

CN113781750A - Novel gas alarm device for community

Info

Publication number: CN113781750A
Application number: CN202111064243.8A
Authority: CN
Inventors: 武亚彬; 曾锦
Original assignee: Shenzhen Xiangming Technology Co ltd
Current assignee: Shenzhen Xiangming Technology Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2021-12-10
Anticipated expiration: 2041-09-10
Also published as: CN113781750B

Abstract

The invention discloses a novel gas alarm device for communities, which comprises a box body, an air suction device, an adjusting device and a cleaning mechanism, wherein a box cover is fixedly connected to the box body, a first air inlet is formed in the box cover, the air suction device is installed in the box body and used for pumping indoor air into the box body for detection, the adjusting device is installed in the box body and used for adjusting the opening size and the air inlet amount of the first air inlet in a linkage mode according to the operation state of the air suction device, the cleaning mechanism is installed in the box body and used for cleaning the first air inlet when the air suction device operates and can be matched with the first air inlets with different opening states for linkage cleaning, and the novel gas alarm device for communities solves the problem that the existing novel gas alarm device for communities is difficult to discharge gas in time after the concentration of the indoor gas exceeds the standard when in use, the device is through setting up the device that induced drafts, conveniently discharges indoor high concentration gas.

Description

Novel gas alarm device for community

Technical Field

The invention relates to the technical field of gas alarm devices, in particular to a novel gas alarm device for a community.

Background

The gas alarm is a gas leakage detection alarm instrument. When gas leakage occurs in the industrial environment and the gas alarm detects that the gas concentration reaches the critical point set by the explosion or poison alarm, the gas alarm can send out an alarm signal to remind workers to take safety measures. The gas alarm can measure the concentration of various gases. The gas leakage prevention device is often used in places with gas leakage, such as chemical plants, petroleum, gas stations, steel plants and the like.

An electrochemical gas sensor is a detector that measures current by oxidizing or reducing a gas to be measured at an electrode to obtain the concentration of the gas to be measured. The gas electrochemical gas sensor is an electrochemical gas sensor specially used for detecting the concentration of methane. The laser gas sensor is a gas sensor developed based on a tunable laser spectrum absorption (TDLAS) principle, and is not influenced by environment temperature and humidity and not influenced by interference gas through the fact that molecular absorption wavelength of gas is irrelevant to temperature and pressure and the wavelength absorption characteristics of different gas molecules are not interfered with each other.

The gas leakage problem in community and the family attracts the same attention, and current novel gas alarm device for community only has the effect of detecting and reporting to the police, nevertheless in case the indoor gas in warning back can not obtain timely discharge, and gas concentration can constantly rise to cause comparatively serious potential safety hazard, be unfavorable for the safety of community. Therefore, a novel gas alarm device for the community is provided.

Disclosure of Invention

The invention aims to provide a novel gas alarm device for a community, which is convenient for quickly discharging gas outdoors when the gas concentration exceeds the standard, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a novel gas alarm device for communities comprises a box body, an air suction device, an adjusting device and a cleaning mechanism, wherein a box cover is fixedly connected onto the box body, a first air inlet is formed in the box cover, a ventilation pipe communicated with the box body is fixedly connected onto the box body, a gas detection sensor and an alarm are fixedly connected into the box body, the alarm is electrically connected with the gas detection sensor, the air suction device is installed in the box body and used for pumping indoor air into the box body for detection, the adjusting device is installed in the box body and used for adjusting the opening size and the air inlet amount of the first air inlet in a linkage mode according to the running state of the air suction device, the cleaning mechanism is installed in the box body and used for cleaning the first air inlet when the air suction device runs and can be matched with the first air inlet in different opening states for linkage cleaning, the device is through setting up the device that induced drafts, can adopt less suction to absorb indoor air and detect under conventional state, is convenient for detect indoor gas concentration more, can accelerate the speed of bleeding after gas concentration exceeds standard to convenient with indoor high concentration gas discharge, set up adjusting device, conveniently enlarge the air inlet at the state of bleeding fast, make the discharge efficiency of indoor gas higher, improved work efficiency and security, make things convenient for people to use.

Preferably, the device that induced drafts includes fixed mounting and is in motor frame on the box body, fixedly connected with motor on the motor frame, the output fixedly connected with flabellum of motor, be equipped with in the box body with gas detection sensor electric connection just is used for controlling the controller of motor speed, is convenient for with indoor air pump to the box body inside detect.

Preferably, adjusting device includes first belt, the coaxial fixedly connected with action wheel of motor output, it is connected with from the driving wheel to rotate in the box body, first belt with the action wheel with from the equal transmission of driving wheel and connect, sliding connection has the baffle in the box body, the equal fixedly connected with fixed block in both sides of box body inside, the bottom fixedly connected with of fixed block with baffle fixed connection's first extension spring, the second air intake has been seted up on the baffle, be equipped with from the driving wheel and be used for the basis the motor speed is adjusted the second air intake with the link gear of first air intake degree of overlapping is convenient for drive the opening size and the intake of adjusting first air intake through the rotation of motor output.

Preferably, the linkage mechanism comprises a first pull rope and a rotating box fixedly mounted on the driven wheel, a first chute is formed in the rotating box, a centrifugal block is connected in the first chute in a sliding manner, a second tension spring fixedly connected with the top of the first chute is fixedly connected to the centrifugal block, an L-shaped groove is formed in the bottom of the rotating box, a rotating pipe is fixedly connected to the side surface of the rotating box, a second chute is formed in the rotating pipe, one end of the first pull rope is fixedly connected with the bottom surface of the centrifugal block, the other end of the first pull rope is fixedly connected with a limiting block slidably connected with the inner wall of the rotating pipe, the limiting block is slidably connected with the second chute, and a pulling part for pulling up the baffle when the motor reaches a certain rotating speed and reducing the overlapping degree between the first air inlet and the second air inlet is arranged on the limiting block, the linkage operation is convenient to be carried out by utilizing the centrifugal force.

Preferably, the pulling part comprises a second pull rope and a third tension spring fixedly mounted at one end in the rotating pipe, the third tension spring is fixedly connected with one end of the limiting block, a rotating shaft is fixedly connected with the limiting block, a pulling disc is fixedly connected with the rotating shaft, a first through hole is formed in the rotating pipe, a limiting rod is fixedly connected with the box cover, a telescopic pipe is connected to the limiting rod in a sliding mode, the inner diameter of the telescopic pipe is slightly larger than the diameter of the pulling disc, a second through hole with a diameter smaller than the diameter of the pulling disc is formed in one end of the telescopic pipe, the first through hole is slightly larger than the diameter of the rotating shaft, and a roller used for changing the pulling direction of the second pull rope is rotatably connected to the limiting rod so as to drive the baffle to lift.

Preferably, clean mechanism includes slide bar and fixed mounting guide bar in the box body, it is connected with reciprocal lead screw to rotate in the box body, the slide bar with guide bar sliding connection, and with reciprocal lead screw threaded connection, be equipped with on the reciprocal lead screw and be used for passing through the motor rotates the driving piece that drives its rotary motion, it is right to be equipped with on the slide bar first air intake with the second air intake carries out clear clean piece, and the rotation of being convenient for to utilize the motor output is cleaned first air intake and second air intake.

Preferably, the driving part comprises a second belt and a third belt, a first gear is coaxially and fixedly connected to the driven wheel, a second gear meshed with the first gear is connected to the box body in a rotating mode, a first bevel gear and a second bevel gear are connected to the box body in a rotating mode, the first bevel gear is meshed with the second bevel gear, the second belt is in transmission connection with the second gear and the first bevel gear, the third belt is in transmission connection with the second bevel gear and the reciprocating screw rod, and therefore the cleaning of the cleaning part can be conveniently linked through rotation of the output end of the motor.

Preferably, the cleaning piece includes fixed mounting and is in a plurality of first cleaning brushes on the slide bar, first cleaning brush with the lower surface sliding connection of first air intake, the third spout has been seted up on the slide bar, sliding connection has the second cleaning brush in the third spout, the second cleaning brush with the upper surface sliding connection of second air intake, fixedly connected with second cleaning brush fixed connection's spring in the third spout, the different overlapping degree of the first air intake of adaptation and second air intake of being convenient for cleans.

Preferably, the centrifugal block is made of an osmium alloy material, the density is high, the mass of the same volume is high, and therefore the centrifugal force of the same rotating speed is increased.

Compared with the prior art, the invention has the beneficial effects that:

the novel gas alarm device solves the problem that the existing novel gas alarm device for the community is difficult to discharge gas in time after the indoor gas concentration exceeds the standard, can absorb and detect indoor air by adopting smaller suction force in a conventional state through the arrangement of the air suction device, is more convenient to detect the indoor gas concentration, and can accelerate the air suction speed after the gas concentration exceeds the standard, so that the indoor high-concentration gas is conveniently discharged, the air inlet is conveniently expanded in a quick air suction state through the arrangement of the adjusting device, the discharge efficiency of the indoor gas is higher, the working efficiency and the safety are improved, and the novel gas alarm device is convenient for people to use.

Drawings

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

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

FIG. 3 is an enlarged view of area A of FIG. 2;

FIG. 4 is a schematic structural view of an air suction device according to the present invention;

FIG. 5 is an enlarged view of area B of FIG. 4;

FIG. 6 is a schematic view of the cleaning mechanism of the present invention;

FIG. 7 is an enlarged view of area C of FIG. 6;

FIG. 8 is an enlarged view of area D of FIG. 6;

FIG. 9 is a schematic view of the adjusting device of the present invention;

FIG. 10 is an enlarged view of area E of FIG. 9;

fig. 11 is an enlarged view of region F in fig. 10.

In the figure: 1-box body; 2-a box cover; 3-a first air inlet; 4-a ventilation pipe; 5-a gas detection sensor; 6-an alarm; 7-an air suction device; 8-a regulating device; 9-a cleaning mechanism; 10-a motor frame; 11-a motor; 12-fan blades; 13-a controller; 14-a first belt; 15-driving wheel; 16-a driven wheel; 17-a baffle; 18-fixing block; 19-a first tension spring; 20-a second air inlet; 21-a linkage mechanism; 22-a first pull cord; 23-rotating the cartridge; 24-a first runner; 25-a centrifugal mass; 26-a second tension spring; 27-L-shaped slots; 28-a rotating tube; 29-a second runner; 30-a limiting block; 31-a pulling member; 32-a second draw cord; 33-a third tension spring; 34-a rotating shaft; 35-a pull disc; 36-a first via; 37-a limiting rod; 38-telescoping tubes; 39-second via; 40-a roller; 41-sliding rod; 42-a guide bar; 43-reciprocating screw rod; 44-a drive member; 45-a cleaning member; 46-a second belt; 47-a third belt; 48-a first gear; 49-a second gear; 50-a first bevel gear; 51-a second bevel gear; 52-a first cleaning brush; 53-third runner; 54-a second cleaning brush; 55-spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-11, a novel gas alarm device for a community in the drawings comprises a box body 1, an air suction device 7, an adjusting device 8 and a cleaning mechanism 9, wherein a box cover 2 is fixedly connected to the box body 1, a first air inlet 3 is formed in the box cover 2, a ventilation pipe 4 communicated with the box body 1 is fixedly connected to the box body 1, a gas detection sensor 5 and an alarm 6 are fixedly connected to the inside of the box body 1, the alarm 6 is electrically connected to the gas detection sensor 5, the air suction device 7 is installed in the box body 1 and used for pumping indoor air into the box body 1 for detection, the adjusting device 8 is installed in the box body 1 and used for adjusting the opening size and the air inlet amount of the first air inlet 3 in a linkage manner according to the operation state of the air suction device 7, the cleaning mechanism 9 is installed in the box body 1 and used for cleaning the first air inlet 3 when the air suction device 7 operates, and can be matched with the first air inlets 3 with different opening states for linkage cleaning.

The air suction device 7 comprises a motor frame 10 fixedly installed on the box body 1, a motor 11 is fixedly connected to the motor frame 10, fan blades 12 are fixedly connected to the output end of the motor 11, and a controller 13 which is electrically connected with the gas detection sensor 5 and used for controlling the rotating speed of the motor 11 is arranged in the box body 1.

Adjusting device 8 includes first belt 14, the coaxial fixedly connected with action wheel 15 of motor 11 output, 1 internal rotation of box body is connected with from driving wheel 16, first belt 14 is connected with action wheel 15 and the equal transmission of follow driving wheel 16, sliding connection has baffle 17 in the box body 1, the equal fixedly connected with fixed block 18 in the inside both sides of box body 1, the bottom fixedly connected with of fixed block 18 and baffle 17 fixed connection's first extension spring 19, second air intake 20 has been seted up on the baffle 17, be equipped with the link gear 21 that is used for adjusting second air intake 20 and the degree of overlapping of first air intake 3 according to motor 11 rotational speed from driving wheel 16.

The linkage mechanism 21 comprises a first pull rope 22 and a rotating box 23 fixedly mounted on the driven wheel 16, a first sliding groove 24 is formed in the rotating box 23, a centrifugal block 25 is connected in the first sliding groove 24 in a sliding manner, a second tension spring 26 fixedly connected with the top of the first sliding groove 24 is fixedly connected to the centrifugal block 25, an L-shaped groove 27 is formed in the bottom of the rotating box 23, a rotating pipe 28 is fixedly connected to the side surface of the rotating box 23, a second sliding groove 29 is formed in the rotating pipe 28, one end of the first pull rope 22 is fixedly connected with the bottom surface of the centrifugal block 25, a limiting block 30 slidably connected with the inner wall of the rotating pipe 28 is fixedly connected to the other end of the first pull rope, the limiting block 30 is slidably connected with the second sliding groove 29, and a pulling part 31 used for pulling up the baffle 17 when the motor 11 reaches a certain rotating speed and reducing the overlapping degree between the first air inlet 3 and the second air inlet 20 is arranged on the limiting block 30.

The pulling member 31 includes a second pulling rope 32 and a third tension spring 33 fixedly installed at one end in the rotating pipe 28, the third tension spring 33 is fixedly connected with one end of a limiting block 30, a rotating shaft 34 is fixedly connected to the limiting block 30, a pulling disk 35 is fixedly connected to the rotating shaft 34, a first through hole 36 is formed in the rotating pipe 28, a limiting rod 37 is fixedly connected to the box cover 2, a telescopic pipe 38 is slidably connected to the limiting rod 37, the inner diameter of the telescopic pipe 38 is slightly larger than the diameter of the pulling disk 35, a second through hole 39 with a diameter smaller than the diameter of the pulling disk 35 is formed in one end of the telescopic pipe 38, the diameters of the first through hole 36 and the second through hole 39 are slightly larger than the diameter of the rotating shaft 34, and a rolling shaft 40 used for changing the pulling direction of the second pulling rope 32 is rotatably connected to the limiting rod 37.

In order to increase the mass of the centrifugal block 25 and provide a larger centrifugal force, the centrifugal block 25 is made of osmium alloy.

In the embodiment, the model of the motor 11 is preferably an LD60 micro motor 11, a hole leading to the outside is drilled on a wall body, the vent pipe 4 is inserted into the hole and fixed, meanwhile, the box body 1 is fixedly arranged on a wall body, the output end of the motor 11 rotates slowly under the conventional state, the motor 11 drives the fan blades 12 to rotate to exhaust air, outside air is exhausted into the box body 1 through the first air inlet 3 and the second air inlet 20, the gas detection sensor 5 can detect the gas content in the air, when the gas content is normal, the air is slowly exhausted to the outside through the ventilation pipe 4 under the air draft effect of the fan blades 12, when the gas content exceeds the standard, the gas detection sensor 5 triggers the alarm 6 to give an alarm, meanwhile, the controller 13 is triggered to drive the motor 11 to rotate in an accelerated manner, and the motor 11 drives the fan to rotate rapidly, so that the air draft efficiency can be accelerated, and the indoor air containing high-concentration fuel gas is discharged to the outside;

meanwhile, the rotation of the output end of the motor 11 can drive the driving wheel 15 to rotate, the driving wheel 15 can drive the driven wheel 16 to rotate through the first belt 14, so as to drive the rotating box 23 to rotate, the rotation of the rotating box 23 can cause the centrifugal block 25 to rotate to generate centrifugal force, the centrifugal block 25 compresses the second tension spring 26, meanwhile, the centrifugal block 25 pulls the first pull rope 22, so as to cause the limiting block 30 to slide, the third tension spring 33 is stretched, the limiting block 30 drives the rotating shaft 34 and the pulling disk 35 to move together, at the same time, the limiting block 30, the rotating shaft 34 and the pulling disk 35 can rotate together with the rotating box 23 and the rotating pipe 28, at this time, the rotating shaft 34 and the pulling disk 35 are not in contact with the telescopic pipe 38, so as to greatly reduce the friction between each other, when the output end of the motor 11 rotates rapidly to perform air extraction, the centrifugal force of the centrifugal block 25 is increased, the moving distance of the first pull rope 22 is increased, and the pulling disk 35 touches one end of the telescopic pipe 38 to pull the telescopic pipe 38 to move, the extension tube 38 drives the second pull rope 32 to pull the baffle 17 to move upwards, and the first tension spring 19 is compressed, so that the overlapping part of the second air inlet 20 and the first air inlet 3 is increased, the air inlet amount is increased, and the gas in the room is discharged to a greater extent.

Example 2

Referring to fig. 4-11 to describe embodiment 2, this embodiment further describes embodiment 1, the cleaning mechanism 9 in the figure includes a sliding rod 41 and a guiding rod 42 fixedly installed in the box body 1, a reciprocating screw rod 43 is rotatably connected in the box body 1, the sliding rod 41 is slidably connected with the guiding rod 42 and is in threaded connection with the reciprocating screw rod 43, a driving member 44 for driving the reciprocating screw rod 43 to rotate through the rotation of the motor 11 is disposed on the reciprocating screw rod 43, and a cleaning member 45 for cleaning the first air inlet 3 and the second air inlet 20 is disposed on the sliding rod 41.

The driving member 44 includes a second belt 46 and a third belt 47, a first gear 48 is coaxially and fixedly connected to the driven wheel 16, a second gear 49 engaged with the first gear 48 is rotatably connected to the case 1, a first bevel gear 50 and a second bevel gear 51 are rotatably connected to the case 1, the first bevel gear 50 is engaged with the second bevel gear 51, the second belt 46 is in transmission connection with both the second gear 49 and the first bevel gear 50, and the third belt 47 is in transmission connection with both the second bevel gear 51 and the reciprocating screw rod 43.

In this embodiment, the output end of the motor 11 rotates to drive the first gear 48 to rotate, the first gear 48 drives the second gear 49 to rotate, the second gear 49 drives the second belt 46 to make the first bevel gear 50 rotate, the first bevel gear 50 drives the second bevel gear 51 to rotate, the second bevel gear 51 drives the reciprocating screw rod 43 to rotate through the third belt 47, the reciprocating screw rod 43 drives the sliding rod 41 to reciprocate under the limiting action of the guide rod 42, and the cleaning piece 45 can be driven to continuously clean the first air inlet 3 and the second air inlet 20, so as to prevent the accumulated dust from affecting the air intake amount and the sensitivity of gas detection.

Example 3

Referring to fig. 6-8 to describe embodiment 3, in this embodiment, to further describe embodiment 1, the cleaning member 45 in the figure includes a plurality of first cleaning brushes 52 fixedly mounted on the sliding rod 41, the first cleaning brushes 52 are slidably connected to the lower surface of the first air inlet 3, a third sliding slot 53 is formed on the sliding rod 41, a second cleaning brush 54 is slidably connected to the third sliding slot 53, the second cleaning brush 54 is slidably connected to the upper surface of the second air inlet 20, and a spring 55 fixedly connected to the second cleaning brush 54 is fixedly connected to the third sliding slot 53.

In this embodiment, the sliding rod 41 moves to drive the first cleaning brush 52 and the second cleaning brush 54 to move together, the third sliding slot 53 and the spring 55 are arranged to enable the second cleaning brush 54 to always abut against the lower edge of the second air inlet 20, the first cleaning brush 52 continuously brushes on the upper surface of the first air inlet 3, and when the second air inlet 20 moves upwards, the second cleaning brush 54 also moves upwards to perform linkage cleaning.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A novel gas alarm device for community, its characterized in that includes:

the gas detection device comprises a box body (1), wherein a box cover (2) is fixedly connected to the box body (1), a first air inlet (3) is formed in the box cover (2), a ventilation pipe (4) communicated with the box body (1) is fixedly connected to the box body (1), a gas detection sensor (5) and an alarm (6) are fixedly connected to the inside of the box body (1), and the alarm (6) is electrically connected with the gas detection sensor (5);

the air suction device (7) is installed in the box body (1) and is used for pumping indoor air into the box body (1) for detection;

the adjusting device (8) is installed in the box body (1) and used for adjusting the opening size and the air inlet volume of the first air inlet (3) in a linkage mode according to the running state of the air suction device (7);

clean mechanism (9), clean mechanism (9) are installed in box body (1), are used for when induced draft device (7) operation right first air intake (3) clean, and can adapt to different opening states first air intake (3) carry out the linkage cleanness.

2. The novel gas alarm device for community of claim 1, characterized in that: induced draft device (7) include fixed mounting motor frame (10) on box body (1), fixedly connected with motor (11) on motor frame (10), the output fixedly connected with flabellum (12) of motor (11), be equipped with in box body (1) with gas detection sensor (5) electric connection just is used for controlling controller (13) of motor (11) rotational speed.

3. The novel gas alarm device for community of claim 2, characterized in that: the adjusting device (8) comprises a first belt (14), the output end of the motor (11) is coaxially and fixedly connected with a driving wheel (15), a driven wheel (16) is rotationally connected in the box body (1), the first belt (14) is in transmission connection with the driving wheel (15) and the driven wheel (16), the box body (1) is internally and slidably connected with a baffle (17), two sides of the interior of the box body (1) are fixedly connected with fixed blocks (18), the bottom of the fixed block (18) is fixedly connected with a first tension spring (19) fixedly connected with the baffle plate (17), and a second air inlet (20) is formed in the baffle (17), and a linkage mechanism (21) for adjusting the overlapping degree of the second air inlet (20) and the first air inlet (3) according to the rotating speed of the motor (11) is arranged on the driven wheel (16).

4. The novel gas alarm device for community of claim 3, characterized in that: the linkage mechanism (21) comprises a first pull rope (22) and a rotating box (23) fixedly mounted on the driven wheel (16), a first sliding groove (24) is formed in the rotating box (23), a centrifugal block (25) is connected in the first sliding groove (24) in a sliding manner, a second tension spring (26) fixedly connected with the top of the first sliding groove (24) is fixedly connected on the centrifugal block (25), an L-shaped groove (27) is formed in the bottom of the rotating box (23), a rotating pipe (28) is fixedly connected with the side surface of the rotating box (23), a second sliding groove (29) is formed in the rotating pipe (28), one end of the first pull rope (22) is fixedly connected with the bottom surface of the centrifugal block (25), the other end of the first pull rope is fixedly connected with a limiting block (30) slidably connected with the inner wall of the rotating pipe (28), and the limiting block (30) is slidably connected with the second sliding groove (29), the limiting block (30) is provided with a pulling piece (31) which is used for pulling up the baffle (17) when the motor (11) reaches a certain rotating speed and reducing the overlapping degree between the first air inlet (3) and the second air inlet (20).

5. The novel gas alarm device for community of claim 4, characterized in that: the pulling piece (31) comprises a second pull rope (32) and a third tension spring (33) fixedly installed at one end in the rotating pipe (28), the third tension spring (33) is fixedly connected with one end of the limiting block (30), a rotating shaft (34) is fixedly connected with the limiting block (30), a pulling disc (35) is fixedly connected with the rotating shaft (34), a first through hole (36) is formed in the rotating pipe (28), a limiting rod (37) is fixedly connected with the box cover (2), a telescopic pipe (38) is slidably connected with the limiting rod (37), the inner diameter of the telescopic pipe (38) is slightly larger than the diameter of the pulling disc (35), a second through hole (39) with the diameter smaller than that of the pulling disc (35) is formed in one end of the telescopic pipe (38), and the diameters of the first through hole (36) and the second through hole (39) are slightly larger than that of the rotating shaft (34), and a rolling shaft (40) used for changing the pulling direction of the second pull rope (32) is rotatably connected to the limiting rod (37).

6. The novel gas alarm device for community of claim 5, characterized in that: clean mechanism (9) include slide bar (41) and fixed mounting guide bar (42) in box body (1), the box body (1) internal rotation is connected with reciprocal lead screw (43), slide bar (41) with guide bar (42) sliding connection, and with reciprocal lead screw (43) threaded connection, be equipped with on reciprocal lead screw (43) and be used for passing through motor (11) rotate drive piece (44) that drive its rotary motion, it is right to be equipped with on slide bar (41) first air intake (3) with second air intake (20) carry out clear cleaning member (45).

7. The novel gas alarm device for community of claim 6, characterized in that: the driving piece (44) comprises a second belt (46) and a third belt (47), a first gear (48) is coaxially and fixedly connected to the driven wheel (16), a second gear (49) meshed with the first gear (48) is rotatably connected to the box body (1), a first bevel gear (50) and a second bevel gear (51) are rotatably connected to the box body (1), the first bevel gear (50) is meshed with the second bevel gear (51), the second belt (46) is in transmission connection with the second gear (49) and the first bevel gear (50), and the third belt (47) is in transmission connection with the second bevel gear (51) and the reciprocating screw rod (43).

8. The novel gas alarm device for community of claim 7, characterized in that: the cleaning piece (45) comprises a plurality of first cleaning brushes (52) fixedly mounted on the sliding rod (41), the first cleaning brushes (52) are connected with the lower surface of the first air inlet (3) in a sliding mode, a third sliding groove (53) is formed in the sliding rod (41), a second cleaning brush (54) is connected with the third sliding groove (53) in a sliding mode, the second cleaning brush (54) is connected with the upper surface of the second air inlet (20) in a sliding mode, and a spring (55) fixedly connected with the second cleaning brush (54) is fixedly connected with the third sliding groove (53).

9. The novel gas alarm device for community of claim 4, characterized in that: the centrifugal block (25) is made of an osmium alloy material.