CN216287001U

CN216287001U - Air suction type smoke sensing detection device

Info

Publication number: CN216287001U
Application number: CN202122560551.1U
Authority: CN
Inventors: 郑宋奇; 唐庆伟; 景红; 宋辉; 胡丙辉
Original assignee: Hainan Zhongwei Technology Co ltd
Current assignee: Hainan Zhongwei Technology Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-04-12
Anticipated expiration: 2031-10-25

Abstract

The utility model provides an air-breathing smoke-sensing detection device, which comprises a shell, wherein an air inlet bin is arranged in the shell, a plurality of air inlets are formed in the side surface of the air inlet bin, a slag discharge port is formed in the bottom of the air inlet bin, a filter screen and a guide rod are arranged in the air inlet bin, a hairbrush is arranged on the guide rod in a sliding manner, and a screw rod connected with the hairbrush in a threaded manner is further rotatably arranged in the air inlet bin; an induced draft fan, a condenser and a detector are further arranged in the shell, a Y-shaped pipe is arranged in the condenser, an inlet of the induced draft fan is connected with an air outlet of the air inlet bin, an outlet of the induced draft fan is connected with an air inlet of the Y-shaped pipe, an air outlet of the Y-shaped pipe is connected to an inlet of the detector through a connecting pipe, and a water outlet of the Y-shaped pipe is connected with the water collecting box; the outlet of the detector is provided with a discharge pipe extending to the outside of the shell; the bottom of the water collecting box is provided with a drain pipe extending to the inside of the detecting instrument. The utility model can efficiently process the sucked air sample and can clean the inside of the detector at the same time, thereby ensuring the accuracy of air sample detection.

Description

Air suction type smoke sensing detection device

Technical Field

The utility model relates to the technical field of fire-fighting detection equipment, in particular to an air-breathing smoke-sensing detection device.

Background

The smoke detector is a device for detecting smoke in fire-fighting alarm equipment, and has the principle that a laser emitting device is arranged in the smoke detector, if smoke enters the device, smoke particles can reflect laser light, the reflected light is detected by a photoelectric device at a specific position, when the detected light is stronger, the voltage of the photoelectric device in a circuit is higher, the smoke concentration in the air can be detected according to the principle, the smoke appearing in the surrounding environment is sensed, and an alarm signal is sent out when the smoke reaches a certain concentration, so that the purpose of preventing fire disaster is achieved. The device is commonly used in fire-fighting fire detection equipment and in the field of industrial dust detection.

The smoke detector in the prior art has the following disadvantages: 1. the air inlet of the smoke detector generally only passes through one air inlet pipeline, the detection area of the smoke detector is relatively one-sided, the pipeline is narrow, the air flow is fast, and the instability of the rear-end detector is easily caused; 2. when the entering gas contains a large amount of fog, dust in the mixed air is easy to block an air inlet pipeline, so that the measurement accuracy of the smoke detector is influenced; 3. floating impurities in the air easily block an air inlet pipeline, and influence is caused on a measurement result; 4. because the light source and the detector are directly exposed in the sample air, in the practical application process, the impurities such as dust, smoke particles, oil stains and the like in the air are easily attached to the light source to shield the output of the light source, so that the phenomena of inaccurate equipment detection, false alarm and the like frequently occur.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problem, the utility model provides an air-breathing type smoke-sensing detection device, which has the following specific scheme:

an air suction type smoke sensing detection device comprises a shell, wherein an air inlet bin is arranged in the shell, a plurality of air inlets are formed in the side face of the air inlet bin, a slag discharge port is formed in the bottom of the air inlet bin, a filter screen and a guide rod are arranged in the air inlet bin, a brush aiming at the filter screen is arranged on the guide rod in a sliding mode, a lead screw connected with the brush in a threaded mode is further arranged in the air inlet bin in a rotating mode, and the lead screw is driven to rotate by a servo motor arranged on the top of the shell; an induced draft fan, a condenser and a detector are further arranged in the shell, a Y-shaped pipe is arranged in the condenser, an inlet of the induced draft fan is connected with an air outlet of the air inlet bin, an outlet of the induced draft fan is connected with an air inlet of the Y-shaped pipe through an exhaust pipe, an air outlet of the Y-shaped pipe is connected to an inlet of the detector through a connecting pipe, and a water outlet of the Y-shaped pipe is connected with the water collecting box; the bottom of the detector is provided with a discharge pipe extending to the outside of the shell; the bottom of the water collecting box is provided with a drain pipe extending into the detector, the drain pipe is provided with a water pump, the drain pipe positioned in the detector is provided with a nozzle aiming at a light source transmitter and a light source receiver in the detector, and the light source transmitter and the light source receiver are both electrically connected with a microprocessor in the detector; a buzzer alarm is also arranged on the shell; the servo motor, the draught fan, the water pump, the microprocessor and the buzzer alarm are electrically connected to the controller, and the controller is provided with the audible and visual alarm.

Based on the above, be equipped with air velocity transducer in the exhaust pipe, the shell bottom is equipped with the fan, the air intake of fan is equipped with the dust screen, and the air outlet of fan is connected with the one end of three-way pipe, the other both ends of three-way pipe are connected with ring pipe, exhaust pipe respectively, are equipped with the gaseous check valve to ring pipe, exhaust pipe respectively in the three-way pipe, are equipped with a plurality of extensions on the ring pipe to the export in storehouse of admitting air, air velocity transducer, fan all with controller electric connection.

Based on the above, be equipped with in the water-collecting box with controller electric connection's water level detector.

Based on the above, the entry of detection instrument sets up with the delivery pipe of detection instrument bottom is relative, the orientation of light source transmitter, light source receiver and the axial of delivery pipe are alternately, and the orientation contained angle of light source transmitter, light source receiver is 30~ 60.

Compared with the prior art, the utility model has substantive characteristics and progress, and particularly has the following advantages:

1. according to the utility model, the air inlet bin is arranged in the shell, the side surface of the air inlet bin is provided with the plurality of air inlets, the bottom of the air inlet bin is provided with the slag discharge port, the air inlet bin is internally provided with the filter screen and the guide rod, the guide rod is provided with the brush aiming at the filter screen in a sliding manner, the air inlet bin is also internally and rotatably provided with the lead screw in threaded connection with the brush, and the lead screw is driven to rotate by the servo motor arranged at the top of the shell.

2. According to the air inlet and outlet device, the air speed sensor is arranged in the exhaust pipe, the fan is arranged at the bottom of the shell, the dust screen is arranged at the air inlet of the fan, the air outlet of the fan is connected with one end of the three-way pipe, the other two ends of the three-way pipe are respectively connected with the annular pipe and the exhaust pipe, the three-way pipe is internally provided with the air one-way valves respectively aiming at the annular pipe and the exhaust pipe, the annular pipe is also provided with a plurality of outlets extending to the air inlet bin, the air speed sensor and the fan are both electrically connected with the controller, the structural design can judge whether the filter screen is blocked through the air speed sensor, the controller closes the induced draft fan, the fan blows air to the filter screen for cleaning, and meanwhile, uninterrupted detection of air is guaranteed.

3. According to the utility model, the Y-shaped pipe is arranged in the condenser, the inlet of the induced draft fan is connected with the air outlet of the air inlet bin, the outlet of the induced draft fan is connected with the air inlet of the Y-shaped pipe through the exhaust pipe, the air outlet of the Y-shaped pipe is connected to the inlet of the detecting instrument through the connecting pipe, and the water outlet of the Y-shaped pipe is connected with the water collecting box.

4. According to the utility model, the drain pipe extending into the detector is arranged at the bottom of the water collecting box, the water pump is arranged on the drain pipe, and the nozzle for the light source emitter and the light source receiver in the detector is arranged on the drain pipe in the detector.

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 detector of the present invention.

In the figure: 1. a housing; 2. an air inlet bin; 3. an air inlet; 4. a slag discharge port; 5. a filter screen; 6. a screw rod; 7. a brush; 8. a guide bar; 9. a servo motor; 10. an induced draft fan; 11. a condenser; 12. a Y-shaped tube; 13. an exhaust duct; 15. a connecting pipe; 16. a detector; 16-1. a light source emitter; 16-2. a light source receiver; 16-3. a microprocessor; 16-4. a discharge pipe; 18. a water collection box; 19. a water level detector; 20. a drain pipe; 20-1. a nozzle; 21. a fan; 22. an annular tube; 23. a three-way pipe; 24. a wind speed sensor; 25. a controller; 26. a buzzer alarm; 27. and (4) a water pump.

Detailed Description

The technical solution of the present invention is further described in detail by the following embodiments.

Examples

As shown in fig. 1-2, the utility model provides an air-breathing smoke-sensing detection device, which comprises a housing 1, wherein an air inlet bin 2 is arranged in the housing 1, a plurality of air inlets are arranged on the side surface of the air inlet bin 2, a slag discharge port 4 is arranged at the bottom of the air inlet bin 2, a filter screen 5 and a guide rod 8 are arranged in the air inlet bin 2, a brush 7 aiming at the filter screen 5 is slidably arranged on the guide rod 8, a screw rod 6 in threaded connection with the brush 7 is rotatably arranged in the air inlet bin 2, and the screw rod 6 is driven to rotate by a servo motor 9 arranged at the top of the housing 1; an induced draft fan 10, a condenser 11 and a detector 16 are further arranged in the shell 1, a Y-shaped pipe 12 is arranged in the condenser 11, an inlet of the induced draft fan 10 is connected with an air outlet of the air inlet bin 2, an outlet of the induced draft fan 10 is connected with an air inlet 3 of the Y-shaped pipe 12 through an exhaust pipe 13, an air outlet of the Y-shaped pipe 12 is connected to an inlet of the detector 16 through a connecting pipe 15, and a water outlet of the Y-shaped pipe 12 is connected with a water collecting box 18; the bottom of the detecting instrument 16 is provided with a discharge pipe 16-4 extending to the outside of the shell 1; the bottom of the water collecting box 18 is provided with a drain pipe 20 extending into the detector 16, the drain pipe 20 is provided with a water pump 27, the drain pipe 20 positioned in the detector 16 is provided with a nozzle 20-1 for the light source emitter 16-1 and the light source receiver 16-2 in the detector 16, and the light source emitter 16-1 and the light source receiver 16-2 are both electrically connected with the microprocessor 16-3 in the detector 16.

In case of fire, in order to remind people in the fire scene of the fire conveniently, a buzzer alarm 26 is arranged on the shell 1.

In order to conveniently realize the automatic control of the smoke detection device, the servo motor 9, the draught fan 10, the water pump 27, the microprocessor 16-3 and the buzzer alarm 26 are all electrically connected to the controller 25, and the controller 25 is provided with an audible and visual alarm.

In order to determine whether the filter screen 5 is blocked or not, a wind speed sensor 24 is arranged in the exhaust pipe 13, a fan 21 is arranged at the bottom of the shell 1, a dust screen is arranged at an air inlet of the fan 21, an air outlet of the fan 21 is connected with one end of a three-way pipe 23, the other two ends of the three-way pipe 23 are respectively connected with the annular pipe 22 and the exhaust pipe 13, a gas one-way valve corresponding to the annular pipe 22 and the exhaust pipe 13 is arranged in the three-way pipe 23, a plurality of outlets extending to the air inlet bin 2 are arranged on the annular pipe 22, and the wind speed sensor 24 and the fan 21 are electrically connected with the controller 25.

In order to facilitate the monitoring of the water level in the water collection box 18, a water level detector 19 is provided in the water collection box 18 and electrically connected to the controller 25.

The inlet of the detector 16 is arranged opposite to the discharge pipe 16-4 at the bottom of the detector 16, the orientation of the light source emitter 16-1 and the light source receiver 16-2 is crossed with the axial direction of the discharge pipe 16-4, and the orientation included angle of the light source emitter 16-1 and the light source receiver 16-2 is 30-60 degrees.

According to the air suction type smoke detection device, the working method comprises the following steps:

step 1: setting photoelectric parameter threshold value detected by the microprocessor 16-3, wind speed threshold value detected by the wind speed sensor 24 and water level threshold value monitored by the water level detector 19 through the controller 25;

step 2: the induced draft fan 10 works, the outside ambient air enters the air inlet bin 2 from the air inlet 3, after removing impurities through the filter screen 5, the outside ambient air enters the exhaust pipe 13, then the air enters the Y-shaped pipe 12 in the condenser 11 for dehumidification and drying, the water generated by condensation enters the water collecting box 18, and the dried air enters the inside of the detecting instrument 16 through the connecting pipe 15 for photoelectric detection;

and step 3: when the photoelectric parameter detected by the microprocessor 16-3 is larger than the photoelectric parameter threshold value set by the controller 25, the audible and visual alarm and the buzzer alarm 26 give out an alarm;

and 4, step 4: when the wind speed sensor 24 detects that the wind speed value is smaller than the threshold value set by the controller 25, the controller 25 closes the induced draft fan 10, starts the fan 21, simultaneously starts the servo motor 9 to clean the filter screen 5, then starts the induced draft fan 10, and closes the fan 21 and the servo motor 9;

and 5: when the water level detector 19 detects that the water level value in the water collecting box 18 is larger than the threshold value set by the controller 25, the controller 25 starts the water pump 27 to clean the light source emitter 16-1 and the light source receiver 16-2.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the utility model or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the utility model as defined by the appended claims.

Claims

1. An air-breathing smoke detection device, characterized in that: the air inlet device comprises a shell (1), wherein an air inlet bin (2) is arranged in the shell (1), a plurality of air inlets are formed in the side face of the air inlet bin (2), a slag discharge hole (4) is formed in the bottom of the air inlet bin (2), a filter screen (5) and a guide rod (8) are arranged in the air inlet bin (2), a brush (7) aiming at the filter screen (5) is arranged on the guide rod (8) in a sliding mode, a screw rod (6) in threaded connection with the brush (7) is further arranged in the air inlet bin (2) in a rotating mode, and the screw rod (6) is driven to rotate by a servo motor (9) arranged at the top of the shell (1); an induced draft fan (10), a condenser (11) and a detecting instrument (16) are further arranged in the shell (1), a Y-shaped pipe (12) is arranged in the condenser (11), an inlet of the induced draft fan (10) is connected with an air outlet of the air inlet bin (2), an outlet of the induced draft fan (10) is connected with an air inlet (3) of the Y-shaped pipe (12) through an exhaust pipe (13), an air outlet of the Y-shaped pipe (12) is connected to an inlet of the detecting instrument (16) through a connecting pipe (15), and a water outlet of the Y-shaped pipe (12) is connected with a water collecting box (18); the bottom of the detecting instrument (16) is provided with a discharge pipe (16-4) extending to the outside of the shell (1); the bottom of the water collecting box (18) is provided with a drain pipe (20) extending into the detector (16), the drain pipe (20) is provided with a water pump (27), the drain pipe (20) positioned in the detector (16) is provided with a nozzle (20-1) aiming at a light source emitter (16-1) and a light source receiver (16-2) in the detector (16), and the light source emitter (16-1) and the light source receiver (16-2) are both electrically connected with a microprocessor (16-3) in the detector (16); a buzzer alarm (26) is also arranged on the shell (1); the automatic alarm device is characterized in that the servo motor (9), the draught fan (10), the water pump (27), the microprocessor (16-3) and the buzzer alarm (26) are electrically connected to the controller (25), and the controller (25) is provided with an audible and visual alarm.

2. The aspirated smoke detector of claim 1, wherein: be equipped with air velocity transducer (24) in exhaust pipe (13), shell (1) bottom is equipped with fan (21), the air intake of fan (21) is equipped with the dust screen, and the air outlet of fan (21) is connected with the one end of three-way pipe (23), the other both ends of three-way pipe (23) are connected with looped pipeline (22), exhaust pipe (13) respectively, are equipped with the gas check valve to looped pipeline (22), exhaust pipe (13) respectively in three-way pipe (23), are equipped with a plurality of extensions on looped pipeline (22) and reach the export of air inlet bin (2), air velocity transducer (24), fan (21) all with controller (25) electric connection.

3. The aspirated smoke detector of claim 2, wherein: a water level detector (19) electrically connected with the controller (25) is arranged in the water collecting box (18).

4. The aspirated smoke detector of claim 3, wherein: and a buzzer alarm (26) is arranged on the shell (1).

5. The aspirated smoke detector of claim 4, wherein: the entrance of the detector (16) is arranged opposite to the discharge pipe (16-4) at the bottom of the detector (16), the orientation directions of the light source emitter (16-1) and the light source receiver (16-2) are crossed with the axial direction of the discharge pipe (16-4), and the orientation included angle of the light source emitter (16-1) and the light source receiver (16-2) is 30-60 degrees.