CN1526983A

CN1526983A - Bottle valve for air respirator

Info

Publication number: CN1526983A
Application number: CNA031129471A
Authority: CN
Inventors: 钮静江
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-03-08
Filing date: 2003-03-08
Publication date: 2004-09-08

Abstract

The bottle valve for air respirator includes valve body and handle. The valve body is connected to the handle via piston sleeve, and the piston inside the piston sleeve has its lower end corresponding to the high pressure air hole and decompression air hole in position. The piston core has ventilation hole, the movable bolt is inserted between the push rod and the handle, and some spring is set between the valve body and the piston. The bottle valve has light weight, small volume, convenient carrying about and simple operation, as well as stable decompression effect, homogeneous air flow and comfortable use.

Description

The air respiratorresuscitator cylinder valve

Affiliated technical field:

The present invention relates to a kind of individual's protection air respiratorresuscitator, the particularly improvement of air respiratorresuscitator cylinder valve.

Background technique:

Air respiratorresuscitator is the personal respiratory protection device that uses for personnel and survivor in works on the spot such as fire, dust, toxic and harmfuls; existing air respiratorresuscitator all is that the bottleneck at gas cylinder is equipped with a bottle switch valve; after opening this switch valve, pressurized gas are supplied with to the user through the reduction valve decompression and by face shield again.On the one hand, reduction valve in this structure only relies on and acts on the effect of piston upper spring equilibrium of forces, controls the overflow effect, reaches the decompression purpose, exist air feed tolerance and air pressure instability, fluctuation deficiency such as bigger, can not satisfy the requirement of the balanced breath of human body well; On the other hand because a bottle switch valve of this structure and reduction valve adopt traditional branch body structure, both all have separately independently valve body, piston, spring and seal arrangement, exist complex structure, volume is bigger, not only increased and carried load, and directly affected user's operation and use.

Summary of the invention:

Technical problem solved by the invention is that the air respiratorresuscitator cylinder valve that a kind of air feed is uniform and stable, use is more comfortable is provided; It is not only simple and compact for structure, in light weight, volume is little, and uses easy to operate.

In order to realize above-mentioned technical problem to be solved, air respiratorresuscitator cylinder valve of the present invention, comprise valve body and handle, this valve body is provided with high pressure pore and decompression pore, described valve body is connected with handle by piston sleeve, and the piston lower end that is loaded in the piston sleeve is corresponding with high pressure pore and decompression pore position on the valve body, and the core of piston is provided with the vent that leads to piston head, movable latch is plugged between the push rod and handle of piston head, between valve body and the piston spring is housed.

After adopting said structure, plug or take out the movable latch between push rod and the handle, just can realize closing and opening of gas cylinder extremely easily.After taking out movable latch and opening gas cylinder, the pressurized gas in the gas cylinder, the top of the high pressure pore on valve body is to piston on the one hand, makes it to lift and forms the overflow gap, and flow into the decompression pore, reaches the purpose of decompression; On the other hand, pressurized gas flow between piston head and the push rod by the vent on the piston, form pressure regulation air cushion chamber, reach automatic adjusting overflow gap, the effect of stablizing output gas pressure and flow.Because this structure has the effect of switch valve and reduction valve simultaneously on a valve body, overall structure is simplified greatly again, it is compact more that volume becomes, weight saving, and the user that is more convenient for bears use.

Description of drawings:

The invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is the main sectional view of air respiratorresuscitator cylinder valve of the present invention;

Fig. 2 is the left view of air respiratorresuscitator cylinder valve shown in Figure 1.

Embodiment:

Fig. 1, air respiratorresuscitator cylinder valve shown in Figure 2, its valve body 1 is penetrated with high pressure pore 12 at the center of valve body 1, correspondingly by being threadedly connected to the bottleneck of gas cylinder, on valve body 1, also be provided with decompression pore 13, the roof anchorage of valve body 1 be socketed with piston sleeve 8.Handle 2 is connected to the outside of piston sleeve 8 by O type stuffing box gland, and is threaded mutually with piston sleeve by regulating screw thread, to realize the sealing adjusting of handle position.Piston 5 is housed in piston sleeve 8, and these piston 5 epimeres are garden platform shape, in, hypomere is respectively the garden column that diameter does not wait, hypomere garden column diameter is less than the stage casing diameter; Vent 6 on the piston 5 feeds from the side of piston 5 hypomere garden posts, to the piston head pass-out.Piston is equipped with sealing block 14 on 5 lower end surfaces, and sealing piece 14 positions are corresponding with the high pressure pore 12 and decompression pore 13 positions of valve body 1.With the sealing of O RunddichtringO, seal with the O RunddichtringO equally between post side, hypomere garden and the valve body 1 between piston 5 epimere garden platform outer side surfaces and piston sleeve 8 inner side surfaces.Also be provided with spring 7 between piston 5 and valve body 1, this spring 7 is a pressure spring.In the piston sleeve 8 on piston 5 tops, push rod 4 is housed versatilely, the O RunddichtringO is housed on the push rod 4, between this push rod 4 and handle 2 inboards, be plugged with movable latch 3.Certainly go up Sealing and be not limited to the O RunddichtringO, go back other corresponding Sealing.

When after injecting movable latch 3 between push rod 4 and the handle 2, movable latch 3 forces piston 5 pressure springs 7 by push rod 4, and makes high pressure pore 12 and decompression pore 13 on piston 5 valve body 1, reaches the purpose of closing source of the gas.When spurring stay cord 18 with after extracting movable latch 3, pressurized gas in the gas cylinder are through sealing block 14 positions of high pressure pore 12 top on piston 5 on the one hand, piston 5 is upwards lifted and form the overflow gap, pressurized gas flow into the pore 13 that reduces pressure through this decompression back, overflow gap, reach the decompression purpose; On the other hand, pressurized gas enter in the gap between piston 5 hypomeres and the valve body 1, and between feeding piston 5 tops and push rod 4 along the vent on the piston 56, formation has the pressure regulation air cushion chamber of automatic Regulation effect; When bottle inner high voltage gas pressure is higher, this air cushion chamber has higher gas pressure equally, and produce one with spring 7 compressive force opposite effect power, piston is moved down, reducing the overflow gap of piston 5 lower ends, and when bottle inner high voltage gas pressure step-down, above-mentioned air cushion chamber reduces the effect of piston 5, move on the piston 5, it is big that the overflow gap of piston 5 lower ends becomes.Pass through the position of regulating piston 5 automatically like this, with change overflow gap length, thereby reach the pressure of stable output gas and the constant current constant voltage effect of flow, both finished decompression, realized stable and automatic adjusting of delivery pressure again, the user comforts.Turn handle 2, the initial position of regulating piston 5 can be regulated initial effect of easing stress again, to adapt to the needs of different users and different occasions.

On valve body 1, also be connected with the gas charging valve of forming by inflation valve seat 10 and inflation valve rod 11 9, gas charging valve 9 is connected with high pressure pore 12 on the valve body 1, the outer end of inflation valve seat 10 is the inflation interface, inflation valve rod 11 is equipped with in its inner, inflation valve rod 11 front ends are taper, and match with the garden taper hole of inflation on the valve seat 10, inflation valve rod 11 is backed down during inflation, pressurized gas are inflated in bottle through high pressure pore 12, after the inflation, bottle inner high voltage gas withstands the inflation valve rod 11 of taper, realizes automatic blocking.

On valve body 1, also be provided with the relief valve port that is connected with high pressure pore 12, be glued with blowout disk 17 on this relief valve port, this blowout disk 17 is fixed on the valve body 1 by breaker bolt 16, breaker bolt 16 is provided with the vent hole that goes out that leads to atmosphere, blowout disk 17 adopts phosphorus bronze sheet, and when pressure of the inside of a bottle increased above safety value, blowout disk 17 was by bursting, the bottle internal air pressure descends thereupon fast, plays the effect of safety anti-explosive.Pressure gauge 15 also is housed, with gas pressure in the display bottle on the valve body.

Above-mentioned air respiratorresuscitator cylinder valve to one skilled in the art, not breaking away under the principle prerequisite of the present invention, is made some modification and improvement, all belongs to protection scope of the present invention.

Claims

1, a kind of air respiratorresuscitator cylinder valve, comprise valve body (1), handle (2), this valve body (1) is provided with high pressure pore (12) and decompression pore (13), it is characterized in that: described valve body (1) is connected with handle (2) by piston sleeve (8), piston (5) lower end that is loaded in the piston sleeve (8) is corresponding with high pressure pore (12) decompression pore (13) position on the valve body (1), the core of piston (5) is provided with the vent (6) that leads to piston (5) top, movable latch (3) is plugged between the push rod (4) and handle (2) that is positioned at piston (5) top, between valve body (1) and the piston (5) spring (7) is housed.

2, cylinder valve according to claim 1 is characterized in that: described piston (5) is corresponding with the high pressure pore (12) and decompression pore (13) position of valve body (1) by the sealing block (14) that is fixedly installed in its lower end.

3, cylinder valve according to claim 1 and 2 is characterized in that: be provided with sealing between described handle (2) and the piston sleeve (8) and interconnect by screw thread.

4, cylinder valve according to claim 1 and 2 is characterized in that: be provided with sealing between described piston sleeve (8) and the push rod (4), be provided with sealing between the epimere of described piston (5) and the piston sleeve (8) and between the hypomere of piston (5) and the valve body (1).

5, cylinder valve according to claim 1 is characterized in that: the gas charging valve (9) that is connected with its high pressure pore (12) is housed on the described valve body (1), and inflation valve seat (10) outer end is the inflation interface, and inflation valve rod (11) is equipped with in its inner.

6, cylinder valve according to claim 1, it is characterized in that: described valve body (1) is provided with the relief valve port that is connected with high pressure pore (12), be fixed with blowout disk (17) by breaker bolt (16) on this relief valve port, this breaker bolt (16) is provided with out vent hole.