CN201565007U - Dustproof half mask for individual escape in down-hole gas explosion of coal mine - Google Patents

Abstract

The utility model relates to a dustproof half mask for individual escape in down-hole gas explosion of coal mine. An electromagnetic switch, a filtering pot, a face-contacting mask, an expiration valve and an inlet valve are equipped on the base. A stop valve is fixed to a driving shaft of the electromagnetic switch. The face-contacting mask is connected with a gas pipe for an oxygen pot. According to the utility model, a signal of a prewarning network is received through a super-regenerative receiver. The signal of the prewarning network is decoded and amplified to a triode field effect transistor which controls the electromagnetic switch and the electromagnetic valve that are equipped to the face-contacting mask. The electromagnetic switch is switched on, the stop valve is pushed down for closing an expiration hole and an inlet hole of the face-contacting mask and insulating the outer poisonous gas. Simultaneously the electromagnetic valve is switched on for supplying oxygen to the face-contacting mask. The dustproof half mask has the following advantages: capacity for saving all artificial operation link for a wearer, no effect for visual field, effective prevention of respirator drop, air leakage and operation stop caused by shock wave of exposition, and precious time saving for escaping.

Description

The dustproof demifacet cover of the individual escape of gas explosion in underground coal mines

Technical field

The utility model relates to the dustproof demifacet cover of the individual escape of a kind of gas explosion in underground coal mines.

Background technology

The isolation type oxygen self-rescuer service routine generally used of down-hole, mine is comparatively loaded down with trivial details for a long time

Usually open two bayonet sockets of respirator loam cake earlier, take off loam cake, open valve gate open oxygen is clamped the nose clip on the leather bag with nose, opens the air bag stopper and catches in its mouth leather bag breathing mouth then.At least needed for 90 seconds from receiving the gas early warning to beginning to wear the chemical oxidation self-rescuer under the skilled situation of calmness, at this moment the underground labour also must stop operation, has so also taken valuable escape time.Add the traditional chemical oxygen self-rescuer and must be hand-held or mouth is stung also and made troubles to escape; in case more likely cause its stupor if the shock wave of its generation of gas explosion is very likely fallen down the underground work personnel; at this moment oxygen self-rescuer will break away from the effect that does not reach protection from mouth and nose, finally will be choked to death by carbon monoxide.

See that from a large amount of fire damp explosion scene data the concentration of its carbon monoxide of fire damp blast back is generally 1～10%, these data mean, will lose valuable life as long as suck flatly under this environment.We can judge that conventional self-rescue apparatus saving oneself in the fire damp blast process almost cannot so.

Also the someone designs common anti-dust respirator improved and directly participates in during emergency escape uses, but will increase overanxious length of tank in case add related device, thereby personnel's the visual field is worn in influence, and therefore never ripe till now Related product emerges.

Summary of the invention

The purpose of this utility model is at above-mentioned present situation, aims to provide a kind of manually Open valve ventilation, combines firmly with the user, for the underground work personnel win the quality time of escape and the dustproof demifacet cover of the individual escape of gas explosion in underground coal mines of chance.

The implementation of the utility model purpose is, the dustproof demifacet cover of the individual escape of gas explosion in underground coal mines, electromagnetic switch is fixed on the base, stop valve is fixed on the driving shaft of electromagnetic switch, outlet valve, inlet valve are installed on the base, outlet valve, inlet valve are positioned at the electromagnetic switch both sides, and be in same plane, connecing the face cover snaps on the base, filtering tank is connected with the base lower thread, and breather pipe is connected in the base below with buckle, connects face and is covered with and the tank connected tracheae of oxygen, the filtering tank bottom is fixed with end cap

The positive pole of power supply connects 1 pin of circuit of three-terminal voltage-stabilizing integrated N1, negative pole connects 2 pin of N1,3 pin of N1 connect 1 pin of superregenerative reception device N2,4 pin that 2 pin of superregenerative reception device N2 meet the 1 pin N3 of decoder element N3 divide two-way after connecing 1 pin of six inverter trigger N4,2 pin of one route N4 connect 3 pin of six inverter trigger N5,4 pin of N5 connect the input of triode FET Q1, the output termination electromagnetic switch of triode FET Q1,2 pin of another route N4 connect 5 pin of six inverter trigger N6,6 pin of N6 connect the input of triode FET Q2, and the output of Q2 is connected with magnetic valve DC.

The utility model has following advantage:

1, utilize existing safety monitoring system in colliery and early warning net,

2, close automatically and connect the exhaling of face cover, inlet valve, manually Open valve ventilation,

3, connect face cover tiltable certain angle, solved the visual field that causes because of the increase of device and reduced,

4, all artificial operation links and effectively having prevented have been saved because the respirator that explosion wave causes comes off, leaks gas and quits work.

The utility model has solved traditional self-help apparatus fully and has worn loaded down with trivial detailsly, breaks away from human body easily when being subjected to the blast impulse wave action and go into a coma and individually cause the corners of the mouth to leak gas because of losing consciousness or body pressure problem such as cause that respirator quits work inadequately.In the nervous scene of the accident of acting hurriedly in a messy situation, use the utility model, need not the user of service spend a large amount of valuable time manually opened, wear respirator, for the underground work personnel provide the quality time and the chance of escape, the staff who waits for rescue for stranded down-hole provides existence to ensure.

Description of drawings

Fig. 1 is the utility model structural representation,

Fig. 2 is the utility model electrical schematic diagram.

The specific embodiment

With reference to Fig. 1, electromagnetic switch 10 is fixed on the base 4, stop valve 6 is fixed on the driving shaft of electromagnetic switch, and with alignment pin 8 location, outlet valve 2, inlet valve 7 is installed on the base 4, outlet valve 2, inlet valve 7 is positioned at electromagnetic switch 10 both sides, and be in same plane, transparent silicon rubber is made connects face cover 3 and adopts post formings or snap on the base 4, and filtering tank 9 is connected with the base lower thread, and breather pipe 11 usefulness buckles are connected in base 4 belows, connecing face cover 3 connects with oxygen tank, connected breather pipe 11 and be communicated with, the filtering tank bottom is fixing with end cap 1, and appendix 11 is fixed on the base 4 by pipe clamp 5.

Transparent silicon rubber is made connects that the face cover is downward-sloping an angle that does not influence the visual field, below.

With reference to Fig. 1,2, the positive pole of power supply connects 1 pin of circuit of three-terminal voltage-stabilizing integrated N1, negative pole connects 2 pin of N1,3 pin of N1 connect 1 pin of superregenerative reception device N2,4 pin that 2 pin of superregenerative reception device N2 meet the 1 pin N3 of decoder element N3 divide two-way after connecing 1 pin of six inverter trigger N4,2 pin of one route N4 connect 3 pin of six inverter trigger N5,4 pin of N5 connect the input of triode FET Q1, the input B of the output termination electromagnetic switch 10 of triode FET Q1, electromagnetic switch 10 is left behind stop valve 6, and then will connect the outlet valve 2 of face cover, inlet valve 7 cuts out, the contacting of isolated and extraneous toxic gas.2 pin of another route N4 connect 5 pin of six inverter trigger N6,6 pin of N6 connect the input of triode FET Q2, the output of Q2 is connected with magnetic valve DC, and magnetic valve is opened, and the A end of the oxygen in the oxygen bottle by appendix 11 is input to connect in the face cover.

Claims (2)

1. the dustproof demifacet cover of the individual escape of gas explosion in underground coal mines, it is characterized in that electromagnetic switch is fixed on the base, stop valve is fixed on the driving shaft of electromagnetic switch, and outlet valve, inlet valve are installed on the base, outlet valve, inlet valve are positioned at the electromagnetic switch both sides, and be in same plane, and connecing the face cover and snap on the base, filtering tank is connected with the base lower thread, breather pipe is connected in the base below with buckle, connect face and be covered with and the tank connected tracheae of oxygen, the filtering tank bottom is fixed with end cap

The positive pole of power supply connects 1 pin of circuit of three-terminal voltage-stabilizing integrated N1, negative pole connects 2 pin of N1,3 pin of N1 connect 1 pin of superregenerative reception device N2,4 pin that 2 pin of superregenerative reception device N2 meet the 1 pin N3 of decoder element N3 divide two-way after connecing 1 pin of six inverter trigger N4,2 pin of one route N4 connect 3 pin of six inverter trigger N5,4 pin of N5 connect the input of triode FET Q1, the output termination electromagnetic switch of triode FET Q1,2 pin of another route N4 connect 5 pin of six inverter trigger N6,6 pin of N6 connect the input of triode FET Q2, and the output of Q2 is connected with magnetic valve DC.

2. the dustproof demifacet cover of the individual escape of gas explosion in underground coal mines according to claim 1, the face cover is downward-sloping an angle that does not influence the visual field, below for connecing of it is characterized in that transparent silicon rubber makes.

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