CN217640371U

CN217640371U - Gas filtering device of air suction type fire detector

Info

Publication number: CN217640371U
Application number: CN202221270494.1U
Authority: CN
Inventors: 胡丙辉; 郑宋奇; 唐庆伟; 宋辉
Original assignee: Hainan Zhongwei Technology Co ltd
Current assignee: Hainan Zhongwei Technology Co ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2022-10-21
Anticipated expiration: 2032-05-25

Abstract

Air-breathing type fire detector's gas filtering device relates to fire detector technical field, including filtering the shell, the left side intercommunication of filtering the shell has the intake pipe, the right side intercommunication of filtering the shell has the outlet duct, install the fan in the intake pipe, the inside vertical two-layer filter screen that is provided with of filter shell, the filtration pore that is located left filter screen is greater than the filtration pore that is located the filter screen on right side, install the clearance mechanism that can carry out automatic clearance to the filter screen between the two-layer filter screen, the bottom of filtering the shell is connected with collects the chamber, the bottom surface of filtering the shell is located the part of collecting the intracavity portion and has seted up the through-hole, the utility model discloses set up double-layer filter screen, can filter the large granule impurity in the air current, after using a period simultaneously, can clear up the filter screen automatically, prevent that the filter screen from blockking up, and impurity after the clearance falls into and collects the intracavity portion, regularly to collect the intracavity portion clear up can.

Description

Gas filtering device of air suction type fire detector

Technical Field

The utility model relates to a fire detector technical field, concretely relates to formula of breathing in fire detector's gas filter equipment.

Background

The air-breathing smoke-sensing fire detector is an automatic fire alarm device which can carry out early warning of fire by sucking air in a protected area into the detector through an air sampling pipe for analysis. Generally, a long-life laser light source is used as a detection light source, smoke particle detection is carried out by using a light scattering technology, and false alarm prevention and smoke particle identification are realized by an auxiliary network technology. Compared with the traditional smoke-sensing detection product, the air-breathing smoke-sensing fire detector has the advantages of high detection sensitivity, convenience in installation and layout, large coverage area of a smoke-sensing network formed after installation, low false alarm rate and capability of realizing the function of early fire detection and alarm. The air-breathing smoke-sensing fire detector is an active detection system, can find fire in time in a common environment, and can actively detect sample air in a high-volume space and a high-speed airflow place which cannot be protected by a conventional detector and a place which cannot be approached by people, so that the air-breathing smoke-sensing fire detector is more and more widely applied to the modern society.

The nuclear core part of formula of breathing in smoke-sensitive fire detector is for arranging the detection device in the detector casing in, when sending outside flue gas to the detector inside through the fan, at first need filter the large granule impurity in the air current, only allow the small-particle that contains smoke composition to pass through, the flue gas after the filtration gets into to survey the chamber and carries out photoelectric detection, the data signal who surveys and obtains behind data processing obtains the flue gas concentration numerical value for judge whether there is the conflagration to take place. Therefore, the smoke processing and detecting device is used as a core unit and plays an important role in the operation of the smoke-sensitive fire detector. At present be equipped with the filter screen in the core unit and be used for filtering the flue gas, but the filter screen can be blockked up through long-time use, needs regularly to change to it is good to guarantee detector behavior of operation, however the dismantlement of filter screen is comparatively troublesome.

SUMMERY OF THE UTILITY MODEL

To the problem that exists, the utility model provides a can clear up the filter screen automatically, prevent the gas filtering device of the formula of breathing in fire detector of filter screen jam.

The specific technical scheme is as follows: including filtering the shell, the left side intercommunication of filtering the shell has the intake pipe, the right side intercommunication of filtering the shell has the outlet duct, install the fan in the intake pipe, filter the inside vertical two-layer filter screen that is provided with of shell, be located the left the filtration pore of filter screen is greater than and is located the right side the filtration pore of filter screen, it is two-layer to install between the filter screen can be right the filter screen carries out the clearance mechanism of automatic clearance, the bottom of filtering the shell is connected with collects the chamber, the bottom surface of filtering the shell is located collect the part of intracavity portion and seted up the through-hole.

Preferably, clearance mechanism is including rotating the connection and being in filter the threaded rod at shell middle part, filter the inside sliding connection of shell and have the horizontal pole, the middle part of horizontal pole seted up with threaded rod matched with threaded connection's screw hole, the equal fixedly connected with scraper blade of left and right lateral wall of horizontal pole, the scraper blade is close to the one end fixedly connected with brush of filter screen, the top of filtering the shell is provided with the drive threaded rod pivoted drive assembly.

Preferably, the front side wall and the rear side wall of the filter shell are both provided with sliding grooves, and two ends of the cross rod are fixedly connected with sliding blocks matched with the sliding grooves in a sliding mode.

Preferably, the driving assembly comprises a driving motor, and the top of the threaded rod penetrates through the top surface of the filter shell and is fixedly connected with an output shaft of the driving motor.

Preferably, the bristles of the brush are in contact with the filter screen.

Preferably, the collection chamber includes epitheca and inferior valve, the inferior valve joint is in the bottom of epitheca, just the epitheca with connect through the buckle between the inferior valve.

The utility model provides a formula of breathing in fire detector's gas filtering device compares beneficial effect with prior art and is: the utility model discloses set up double-deck filter screen, can filter the large granule impurity in the air current, use a period back simultaneously, can clear up the filter screen automatically, prevent that the filter screen from blockking up, and the impurity after the clearance falls into and collects intracavity portion, regularly to collect intracavity portion clear up can.

Drawings

FIG. 1: is the utility model provides an integral structure chart.

FIG. 2: is an enlarged view of a portion a in fig. 1.

FIG. 3: is the utility model provides an inside front view of filter shell.

FIG. 4: is the structure chart of the utility model when used inside the air suction type fire detector.

In the figure: 1-a filter shell, 2-an air inlet pipe, 3-an air outlet pipe, 4-a filter screen, 5-a collection cavity, 6-a through hole, 7-a threaded rod, 8-a cross rod, 9-a scraper, 10-a brush, 11-a chute, 12-a slide block, 13-a driving motor, 14-an upper shell, 15-a lower shell and 16-a fan.

Detailed Description

The technical solutions of the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention, and in the description of the present invention, it is to be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and therefore, cannot be understood as limitations of the present invention.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance throughout the present disclosure, it being understood that unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and can be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in further detail with reference to specific embodiments and drawings.

The first embodiment is as follows: as shown in figures 1-3, the gas filtering device of the air suction type fire detector comprises a filtering shell 1, wherein the left side of the filtering shell 1 is communicated with an air inlet pipe 2, the air inlet pipe 2 can be integrally formed with the filtering shell 1, and the air inlet pipe 2 can also be connected to the filtering shell 1 through threads. The air inlet pipe 2 is provided with a fan 16, and under the pumping of the fan 16, external air flow can be sucked into the filter shell 1. The right side of the filtering shell 1 is communicated with an air outlet pipe 3, the air outlet pipe 3 can be integrally formed with the filtering shell 1, and the air outlet pipe 3 can also be connected to the filtering shell 1 through threads.

Filter 1 inside vertical two-layer filter screen 4 that is provided with of shell, filter screen 4 can adopt the metal mesh board, but filter screen 4 lug weld is inside filtering shell 1, and the filtration pore that is located left filter screen 4 is greater than the filtration pore that is located filter screen 4 on right side, through two-layer filter screen 4, can fully filter the inside dust of air current or impurity, compares and designs the one deck filter screen, and this application designs two-layer filter screen, and the filter effect is better.

Install the clearance mechanism that can carry out the automation clearance to filter screen 4 between two-layer filter screen 4, through clearance mechanism, can clear up filter screen 4, avoid filter screen 4 to be blockked up by dust or impurity, influence the filter effect.

The bottom of filtering shell 1 is connected with collects chamber 5, collects the top in chamber 5 and can set up with filtering shell 1 integrated into one piece, filters the part that the bottom surface of shell 1 is located and collects chamber 5 inside and has seted up through-hole 6, clears up dust or impurity on the filter screen 4 down through clearance mechanism to collect inside collecting chamber 5 through-hole 6.

In this embodiment, clearance mechanism is including rotating threaded rod 7 of connection at filtering shell 1 middle part, and threaded rod 7 rotates through the bearing to be connected in the inside of filtering shell 1, filters 1 inside sliding connection of shell and has a horizontal pole 8, filters preceding, the back both sides wall of shell 1 and has all seted up spout 11, the both ends fixedly connected with of horizontal pole 8 and the gliding slider 12 of spout 11 matched with, slider 12 sets up in 8 integrated into one piece of horizontal pole.

Threaded holes matched with the threaded rods 7 and in threaded connection are formed in the middle of the cross rod 8, the left side wall and the right side wall of the cross rod 8 are fixedly connected with scraping plates 9 in a welding mode, one ends, close to the filter screen 4, of the scraping plates 9 are fixedly connected with hairbrushes 10 through screws, and bristles of the hairbrushes 10 are in contact with the filter screen 4. The top of filtering shell 1 is provided with drive threaded rod 7 pivoted drive assembly, and wherein drive assembly includes driving motor 13, and driving motor 13 adopts prior art, and the top of threaded rod 7 runs through the top surface of filtering shell 1 and passes through shaft coupling fixed connection with driving motor 13's output shaft.

Collect chamber 5 and include epitheca 14 and inferior valve 15, epitheca 14 sets up with filter shell 1 integrated into one piece, inferior valve 15 joint in the bottom of epitheca 14, and be connected through the buckle between epitheca 14 and the inferior valve 15, the buckle is similar with the hasp structure on the toolbox among the prior art, it gets off to set up convenient regularly can dismantle inferior valve 15 like this, and then conveniently clears up the dust or impurity of collecting the inside collection in chamber 5, whole process is simple swift, save the step of dismantling the fire detector casing.

The working principle is as follows: after this formula of breathing in smoke fire detector work a period, start driving motor 13, driving motor 13 drives threaded rod 7 and rotates, and threaded rod 7 rotates and drives horizontal pole 8 and reciprocates in filtering 1 insidely of shell, and brush 10 clears up filter screen 4 this moment, prevents that filter screen 4 from being blockked up by dust or impurity, and the impurity after the clearance passes through-hole 6 and collects inside collection chamber 5. The lower shell 15 is opened regularly, so that dust or impurities collected in the collection cavity 5 can be cleaned conveniently.

As shown in FIG. 4, will the utility model discloses be used in inside the formula of breathing in fire detector, filter shell 1 and pass through screw fixed connection inside the fire detector casing, driving motor 13 passes through screw fixed connection on the motor board, and the motor board passes through screw fixed connection inside the fire detector casing. One end of the air inlet pipe 2 far away from the filter shell 1 is communicated with the air collecting box (prior art), and one end of the air outlet pipe 3 far away from the filter shell 1 is communicated with the detection processing device (prior art). Under the pumping action of the fan 16, sampled airflow enters the gas collecting box, is mixed and then enters the interior of the filter shell 1 through the air inlet pipe 2, the filter shell 1 filters the airflow, the filtered airflow flows into the detection processing device to be subjected to detection processing of smoke, and finally the airflow is discharged out of the detector shell through the exhaust pipe communicated with the other side of the detection processing device.

To sum up, the utility model discloses set up double-deck filter screen, can filter the large granule impurity in the air current, use a period back simultaneously, can clear up the filter screen automatically, prevent that the filter screen from blockking up, and the impurity after the clearance falls into and collects intracavity portion, regularly to collecting intracavity portion clear up can

While the present invention has been particularly shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. Air suction type fire detector's gas filtering device, including filtering shell (1), the left side intercommunication of filtering shell (1) has intake pipe (2), the right side intercommunication of filtering shell (1) has outlet duct (3), install fan (16) on intake pipe (2), its characterized in that, it is provided with two-layer filter screen (4) to filter the inside vertical of shell (1), is located left the filtration pore of filter screen (4) is greater than and is located the right the filtration pore of filter screen (4), two-layer install between filter screen (4) and to carry out the clearance mechanism of automatic clearance in filter screen (4), the bottom of filtering shell (1) is connected with collects chamber (5), the bottom surface of filtering shell (1) is located through-hole (6) have been seted up to the inside part in collection chamber (5).

2. The gas filtering device of the air-breathing fire detector as claimed in claim 1, wherein the cleaning mechanism comprises a threaded rod (7) rotatably connected to the middle of the filtering shell (1), a cross rod (8) is slidably connected inside the filtering shell (1), a threaded hole in threaded connection with the threaded rod (7) in a matching manner is formed in the middle of the cross rod (8), scrapers (9) are fixedly connected to the left and right side walls of the cross rod (8), one end of each scraper (9) close to the filter screen (4) is fixedly connected with a brush (10), and a driving component for driving the threaded rod (7) to rotate is arranged at the top of the filtering shell (1).

3. The gas filtering device of the air suction type fire detector according to claim 2, wherein sliding grooves (11) are formed in the front side wall and the rear side wall of the filter shell (1), and sliding blocks (12) which are matched with the sliding grooves (11) to slide are fixedly connected to two ends of the cross rod (8).

4. The gas filtering device of a suction fire detector according to claim 2, wherein the driving assembly comprises a driving motor (13), and the top of the threaded rod (7) penetrates the top surface of the filter housing (1) and is fixedly connected with the output shaft of the driving motor (13).

5. Gas filtering device of a suction fire detector according to claim 2, characterized in that the bristles of said brush (10) are in contact with said screen (4).

6. The gas filtering device of a suction type fire detector according to claim 1, wherein the collecting chamber (5) comprises an upper shell (14) and a lower shell (15), the lower shell (15) is snapped on the bottom of the upper shell (14), and the upper shell (14) and the lower shell (15) are connected by a snap fit.