CN218358118U - Three-proofing system poison filtering and ventilating device - Google Patents

Abstract

The utility model discloses a three proofings system strains poison ventilation unit belongs to the safety protection field, and it includes one-level filtration system, second grade filtration system and blowback system, one-level filtration system includes first fan and one-level rose box, and second grade filtration system includes air intake, air exit, first second grade rose box, second grade rose box, and air intake and air exit are linked together with first second grade rose box, second grade rose box through first diverter valve and second diverter valve respectively, the blowback system includes blowback and blowback air exit, blowback and blowback air exit are linked together with first second grade rose box and second grade rose box through third diverter valve and fourth diverter valve respectively, the both sides of third diverter valve are provided with first heating pipe and second heating pipe respectively; the utility model discloses a set up heating device and two circulation system, make its live time that reaches automatically cleaning effect, extension fixture to improve and gather activity efficiency and reduce staff's operation risk.

Description

Three-proofing system poison filtering and ventilating device

Technical Field

The utility model belongs to the technical field of safety protection, specifically be a three proofings system strains poison ventilation unit.

Background

With the rapid development of social economy, the application range of dangerous chemicals is wider and wider, the scales of production, storage, transportation and the like are also larger and larger, once a chemical accident happens, a detection vehicle is needed to detect the dangerous chemicals leaked on the site of the chemical accident, the types of the leaked dangerous chemicals are distinguished, and the contamination degree of the dangerous chemicals is measured. As toxic and harmful substances which threaten the life safety of workers possibly exist on the site, when the chemical detection vehicle enters a chemical accident site, the interior of the vehicle needs to have positive pressure three-prevention function.

The conventional positive pressure three-proofing system has short toxin filtering time, and workers need to retreat after the vehicles enter a chemical accident site and are not fully sampled, so that the acquisition activity efficiency is low and the operation risk of the workers is high.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the defects of the prior art, the utility model provides a three-proofing system toxin filtering and ventilating device, which firstly improves the air temperature in a back blowing system by arranging a heating device, toxic attachments adsorbed in the secondary filter tank are activated, and the toxic attachments are removed from the vehicle as much as possible, so that the purpose of self-cleaning is achieved, and the service life of the secondary filter tank is prolonged; then this device adopts double circulation system, sets up two second grade rose boxes promptly, can alternate use can prolong the live time of device again.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a three-proofing system poison filtering ventilation device comprises a primary filtering system, a secondary filtering system and a back flushing system, wherein the primary filtering system comprises a first fan and a primary filtering box, and the first fan is communicated with the primary filtering box; the second-stage filtering system comprises an air inlet and an air outlet, one end of the air inlet is communicated with the first-stage filtering box, the other end of the air inlet is communicated with a first switching valve, the first switching valve is respectively communicated with one end of the first second-stage filtering box and one end of the second-stage filtering box through pipelines, the other ends of the first second-stage filtering box and the second-stage filtering box are communicated with a second switching valve through pipelines, and the second switching valve is communicated with the air outlet; the blowback system includes blowback mouth and blowback air exit, the one end and the second fan of blowback mouth are linked together, the other end and the third diverter valve of blowback mouth are linked together, the both sides of third diverter valve are provided with first heating pipe and second heating pipe respectively, the third diverter valve is linked together through pipeline and first second grade rose box and second grade rose box, the blowback air exit is linked together with the fourth diverter valve, the fourth diverter valve is linked together through pipeline and first second grade rose box and second grade rose box.

Preferably, the air volume of the first fan is larger than that of the second fan.

Preferably, a comprehensive gas filter screen is arranged in the first-stage filter box, and special gas filter screens are arranged in the first second-stage filter box and the second-stage filter box.

Preferably, temperature sensors are arranged in the first secondary filter tank and the second secondary filter tank.

Preferably, one side of the first heating pipe and one side of the second heating pipe are respectively provided with a temperature sensor.

(III) advantageous effects

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the temperature in the back flushing system is increased by arranging the heating device, so that toxic and attached substances adsorbed in the secondary filter tank are activated, and are discharged out of the vehicle as much as possible, and the purpose of self-cleaning is achieved, so that the service time of the secondary filter tank is prolonged;

2. the double-circulation system is adopted, namely two secondary filter tanks are arranged, so that the double-circulation system can be used alternately, and the service life of the device can be prolonged.

Drawings

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

fig. 2 is a schematic side view of the present invention;

fig. 3 is a rear view structure diagram of the present invention;

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

The first embodiment is as follows:

referring to fig. 1, the poison filtering and ventilating device of the three-proofing system comprises a primary filtering system, a secondary filtering system and a back flushing system, wherein the primary filtering system comprises a first fan 1 and a primary filtering box 2, and the first fan 1 is communicated with the primary filtering box 2; the secondary filtering system comprises an air inlet 3 and an air outlet 4, one end of the air inlet 3 is communicated with the primary filtering box 2, the other end of the air inlet 3 is communicated with a first switching valve 5, the first switching valve 5 is respectively communicated with one end of a first secondary filtering box 6 and one end of a second secondary filtering box 7 through pipelines, the other ends of the first secondary filtering box 6 and the second secondary filtering box 7 are communicated with a second switching valve 8 through pipelines, and the second switching valve 8 is communicated with the air outlet 4; the back-blowing system comprises a back-blowing port 9 and a back-blowing air outlet 10, one end of the back-blowing port 9 is communicated with a second fan 11, the other end of the back-blowing port 9 is communicated with a third switching valve 12, a first heating pipe 14 and a second heating pipe 15 are respectively arranged on two sides of the third switching valve 12, the third switching valve 12 is communicated with a first secondary filter box 6 and a second secondary filter box 7 through pipelines, the back-blowing air outlet 10 is communicated with a fourth switching valve 13, and the fourth switching valve 13 is communicated with the first secondary filter box 6 and the second secondary filter box 7 through pipelines.

The working principle is as follows:

when a worker drives the detection vehicle to a chemical accident site, the first switching valve 5 and the second switching valve 8 are switched to be communicated with the first second-stage filter tank 6, and the third switching valve 12 and the fourth switching valve 13 are switched to be communicated with the second-stage filter tank 7;

then, the first fan 1 sucks air outside the vehicle into the primary filter tank 2 for primary filtering, the primarily filtered air flows through the air inlet 3 and the first switching valve 5, enters the first secondary filter tank 6, is subjected to deep filtering in the first secondary filter tank 6 through the air, flows through the second switching valve 8 and is discharged into the vehicle through the air outlet 4;

meanwhile, the second heating pipe 15 is started, when the temperature of the second heating pipe 15 is heated to about 80 ℃, the second fan 11 is started, air filtered by the first secondary filter tank 6 in the vehicle enters the second secondary filter tank 7 through the back flushing port 9 and the third switching valve 12, the polluted gas adsorbed on the filter element is blown to the back flushing exhaust port 10, and the toxic gas is exhausted out of the vehicle through the back flushing exhaust port 10;

when the first secondary filter tank 6 filters the external air of the vehicle for a period of time, the first switching valve 5 and the second switching valve 8 are switched to be communicated with the second secondary filter tank 7, the third switching valve 12 and the fourth switching valve 13 are switched to be communicated with the first secondary filter tank 6, the external air of the vehicle enters the second secondary filter tank 7 through the air inlet 3 for deep filtration, and the filtered air is discharged into the vehicle through the air outlet 4; open first heating pipe 14 simultaneously, when first heating pipe 14 temperature heating to about 80 ℃, start second fan 11, with in the car through the filterable air of second grade rose box 7 get into first second grade rose box 6 through blowback 9 and third diverter valve 12, blow the contaminated gas who adsorbs on the filter core to blowback air exit 10, through blowback air exit 10 with the outside of toxic gas exhaust car, so cyclic reciprocation can prolong greatly the utility model discloses a live time to the staff provides sufficient sampling time.

Example two:

in the embodiment, as a preferred technical solution of the first embodiment, the air volume of the first fan 1 is greater than the air volume of the second fan 11, because the first fan 1 is used for sucking external air into the vehicle, and the second fan 11 is used for discharging toxic gas in the vehicle, when the air volume of the first fan 1 is greater than the air volume of the second fan 11, the air pressure in the vehicle is higher than the air pressure outside the vehicle, so as to form a micro-positive pressure state, at this time, air with carbon dioxide exceeding the standard in the vehicle is replaced through a door gap and a window gap of the vehicle, but at the same time, outdoor toxic gas cannot enter through the door gap and the window gap, so that the cleanness of the air in the vehicle can be maintained.

Example three:

the embodiment is taken as an optimized technical scheme of the first embodiment, be provided with comprehensive gas filter screen in the first grade rose box 2, be provided with the special gas filter screen in first second grade rose box 6 and the second grade rose box 7, when outside polluted air got into first grade rose box 2, can filter about 60% poisonous harmful gas through setting up comprehensive gas filter screen inside it, and first second grade rose box 6 and second grade rose box 7 then can predict information such as report through the scene of an accident, set up the special gas filter screen at first second grade rose box 6 and second grade rose box 7 in advance, so that more accurate filter poisonous harmful gas, also can improve the filter effect simultaneously.

Example four:

in this embodiment, as a preferable technical solution of the first embodiment, temperature sensors are arranged in the first secondary filter tank 6 and the second secondary filter tank 7, because the temperature of the filter tanks is not too high, when the temperature exceeds 200 ℃, there is a risk of combustion, and organic matters adsorbed on the filter tanks are very active at about 80 ℃, so that the fan blows out the vehicle reversely, the temperature in the filter tanks needs to be kept at about 80 ℃, the temperature range of the temperature sensors is set to 70-90 ℃, and when the temperature is lower than 70 ℃ or higher than 90 ℃, an alarm is displayed in the vehicle.

Example five:

in this embodiment, as a preferable technical solution of the first embodiment, temperature sensors are respectively disposed on one side of the first heating pipe 14 and one side of the second heating pipe 15, the temperature range of the temperature sensors is set to 80-100 ℃, a PID control method is adopted, when the temperature is too high and too hot, the heating pipes are closed, and when the temperature is too low, the heating pipes are started, so that the temperature in the filtering box can be always kept at about 80 ℃. So as to better clean the filter box and prolong the service time of the device.

Claims (5)

1. The utility model provides a three proofings system strains poison ventilation unit, includes one-level filtration system, second grade filtration system and blowback system, its characterized in that: the primary filtering system comprises a first fan (1) and a primary filtering box (2), and the first fan (1) is communicated with the primary filtering box (2); the secondary filtering system comprises an air inlet (3) and an air outlet (4), one end of the air inlet (3) is communicated with the primary filtering box (2), the other end of the air inlet (3) is communicated with a first switching valve (5), the first switching valve (5) is respectively communicated with one ends of a first secondary filtering box (6) and a second secondary filtering box (7) through pipelines, the other ends of the first secondary filtering box (6) and the second secondary filtering box (7) are communicated with a second switching valve (8) through pipelines, and the second switching valve (8) is communicated with the air outlet (4);

the back flushing system comprises a back flushing port (9) and a back flushing air outlet (10), one end of the back flushing port (9) is communicated with a second fan (11), the other end of the back flushing port (9) is communicated with a third switching valve (12), two sides of the third switching valve (12) are respectively provided with a first heating pipe (14) and a second heating pipe (15), the third switching valve (12) is communicated with a first secondary filter box (6) and a second secondary filter box (7) through a pipeline, the back flushing air outlet (10) is communicated with a fourth switching valve (13), and the fourth switching valve (13) is communicated with the first secondary filter box (6) and the second secondary filter box (7) through a pipeline.

2. The three-proofing system toxin filtering and ventilating device of claim 1, wherein: the air volume of the first fan (1) is larger than that of the second fan (11).

3. The three-proofing system toxin filtering and ventilating device of claim 1, wherein: and a comprehensive gas filter screen is arranged in the first-stage filter box (2), and gas filter screens are arranged in the first second-stage filter box (6) and the second-stage filter box (7).

4. The three-proofing system toxin-filtering ventilation device of claim 1, wherein: and temperature sensors are arranged in the first secondary filter box (6) and the second secondary filter box (7).

5. The three-proofing system toxin filtering and ventilating device of claim 1, wherein: and temperature sensors are respectively arranged on one sides of the first heating pipe (14) and the second heating pipe (15).

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