CN205402239U - Miniature gas bottle of non - repeated charging - Google Patents

Abstract

The utility model relates to a miniature gas bottle of non - repeated charging. The purpose is that the miniature gas bottle who provides has the disposable characteristics to safe and reliable, convenient, the lower characteristics of cost of preparation. Technical scheme is: miniature gas bottle of non - repeated charging is including the bottle and the self sealing valve of seal installation at bottle opening position of a top end opening, but disk seat and the endwise slip ground location case in the disk seat that this self sealing valve was opened by single -revolution bodily form form and axial is constituteed, its characterized in that the bottom of disk seat is the throat, and the disposable bottle plug of the rotary bodily form is installed at the throat position.

Description

Non-refillable miniature gas bottle

Technical field

This utility model relates to a kind of portable caisson, especially stores the miniature gas cylinder of welding fuel gas.

Background technology

Miniature gas bottle (usual capacity is less than 2 liters) is caisson easy to carry, broad-spectrum, especially at the equipment that the occasions such as cable installation and repairing, refrigeration piping welding are required especially.The opening that the structure of this kind of fuel cartridge is on a tank body top installs a self seal valve；During use, when welding gun connecting portion (passing through screw thread) screws on the opening on fuel cartridge top, the spool of self seal valve is subject to the top pressure of welding gun and is unlocked, namely fuel gas in tank is released into welding gun, and lighted the muzzle ejection thermal-flame from welding gun by ignition, thus copper, iron material are carried out high-temperature soldering.When being not affected by welding gun top, outside pressure, relying on the spring force top pressure valve core on self seal valve, leaking thus closing fuel cartridge prevention combustion gas.

Existing miniature gas bottle is substantially the repeatable structural design filling combustion gas；Though this structure can reuse steel gas cylinder, contribute to recycling resource, but also there is open defect；Especially it is likely and is utilized without good producer individually, in reclaiming steel gas cylinder, refill inferior fuel gas make profit, thus causing potential safety hazard.

In view of this, market is looked forward to can have disposable miniature gas bottle.

Utility model content

Technical problem to be solved in the utility model is the deficiency overcoming above-mentioned background technology to exist, it is provided that the improvement of a kind of miniature gas bottle, and this miniature gas bottle has disposable feature and feature safe and reliable, easy to make, lower-cost.

The technical scheme that this utility model provides is: non-refillable miniature gas bottle, including bottle and the self seal valve being sealingly mounted at bottle opening of a top end opening；The spool that this self seal valve is axially slidably positioned in valve seat by single-revolution shape and the valve seat axially opened and forms；It is characterized in that the bottom of described valve seat is reducing, reducing position is provided with the disposable bottle stopper of the revolution bodily form.

Described reducing is conical end face towards the end face of spool side；The outer circumference surface of described disposable bottle stopper is shaped with the mating surface matched with described conical end face, is positioned at below the axis of this mating surface and also makes has several surround circumference and have the protrusion in gap each other；The distance of described protrusion and mating surface is more than the axial length of described reducing.

The distance of described protrusion and mating surface is more than described reducing 2-5mm.

The distance of the top of this disposable bottle stopper and spool bottom is 1-7mm.

The top of described disposable bottle stopper to the outer circumference surface between described mating surface is up-small and down-big taper seat.

Described disposable bottle stopper is quality of rubber materials bottle stopper.

Operation principle of the present utility model is: the miniature gas bottle that this utility model provides, and will not touch spool, so not being affected (state of disposable bottle stopper is as shown in Figure 3) during normal inflation；And in use, the connecting bolt of welding gun screw on miniature gas bottle top end opening position screw thread after, while gas channel opened by welding gun top pressure valve core, also disposable bottle stopper is turned down pressure mobile, make described protrusion be pushed up pressure shrink and clamp-on reducing and move down, until described protrusion is moved to departing from reducing, then protruding and rely on elasticity again to open location (as shown in Figure 2), the mating surface protruding top then can match with conical end face；Now, owing in bottle, the pressure of gas, more than the external world, is backed down mating surface it is possible to continue reliance on pressure and entered in welding gun by valve seat.If gas is finished in bottle, when someone inflates without authorization, owing to ambient pressure is more than pressure of the inside of a bottle, the mating surface of disposable bottle stopper is made to push up pressure conical end face more tightly so pressure can only be turned down, thus having cut off the path of extraneous entrance fuel gas bottle inner chamber so that inflation cannot be carried out.

The beneficial effects of the utility model are: this utility model has disposable feature, have stopped potential potential safety hazard completely, have conscientiously accomplished safe and reliable；And simple in construction, easy to make, less costly, it is subject to the welcome of client.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the structure for amplifying schematic diagram (normal operating conditions) of the self seal valve in Fig. 1.

Fig. 3 be this utility model inflation before, or inflation after still unused state time, self seal valve position view.

Fig. 4 is the structural representation of the disposable bottle stopper in this utility model.

Detailed description of the invention

Miniature gas bottle is as a kind of product with tight security requirement, and country has strict standard to specify；Particularly spool therein, belongs to standardized product, it is not necessary that also without being likely to make structural change；Therefore the partial structurtes that inventor can only, under keeping the premise that automatic-sealed valve base population structure is constant, carry out improving safety are changed.

Miniature gas bottle shown in figure, its bottle 2 top end opening, opening seals installs a self seal valve 5 (usually by welding manner, be fixed on bottle by self seal valve).This self seal valve is arranged on the spool 5-2 in valve seat (spool with spring and valve rod) by the valve seat 5-1 and of single-revolution shape and forms；Bottle top is also equipped with a relief valve 4.The valve base inner wall being positioned at the fixing threaded upper end of spool is shaped with a sealing ring positioning step, is used for disposing a sealing ring 5-3 herein；After fuel cartridge loaded onto by welding gun, the interface of welding gun is closely pushed up by pressure ring 5-4 and press against sealing ring, it is ensured that combustion gas will not leak.Above structure is all identical with existing fuel gas bottle.

The structural modification that this utility model is made is: a reducing 5-12 is made in the bottom of described valve seat, and reducing position is provided with the disposable bottle stopper 3 of the revolution bodily form.

Described reducing is conical end face 5-11 towards the end face of spool side；The outer circumference surface of disposable bottle stopper is shaped with the mating surface 3-2 matched with described conical end face, is positioned at below this mating surface axis and also makes has several surround circumference and have the protrusion 3-3 in gap each other；The described distance axial length more than described reducing being protruding to mating surface, so enables to disposable bottle stopper and crosses under welding gun pressure below reducing arrival reducing.As recommendation, it is protruding to the distance of mating surface more than reducing axial length 2-5mm.

Natural, in use, welding gun pressure can pass to disposable bottle stopper by spool, and the distance of the top of this disposable bottle stopper and spool bottom should be not excessive, and general control is at 1-7mm.

Up-small and down-big taper seat is made to the outer circumference surface between described mating surface in the top of described disposable bottle stopper, is beneficial to air-flow unimpeded；In addition, except this taper seat and aforesaid mating surface, there is between all the other outer circumference surface and reducings of disposable bottle stopper the spacing (the outer circumference surface surface of disposable bottle stopper is shaped with axial arranged guide groove, or the cross section at this position is on-circular cross-section) being beneficial to air-flow conducting.

Described disposable bottle stopper is preferably quality of rubber materials bottle stopper.

Claims (6)

1. non-refillable miniature gas bottle, including the bottle (2) of a top end opening be sealingly mounted at the self seal valve (5) of bottle opening；The spool (5-2) that this self seal valve is axially slidably positioned in valve seat by single-revolution shape and the valve seat (5-1) and axially opened forms；It is characterized in that the bottom of described valve seat is reducing (5-12), reducing position is provided with the disposable bottle stopper (3) of the revolution bodily form.

2. non-refillable miniature gas bottle according to claim 1, it is characterised in that: described reducing is conical end face (5-11) towards the end face of spool side；The outer circumference surface of described disposable bottle stopper is shaped with the mating surface (3-2) matched with described conical end face, is positioned at below the axis of this mating surface and also makes has several surround circumference and have the protrusion (3-3) in gap each other；The distance of described protrusion and mating surface is more than the axial length of described reducing.

3. non-refillable miniature gas bottle according to claim 2, it is characterised in that: the distance of described protrusion and mating surface is more than described reducing 2-5mm.

4. non-refillable miniature gas bottle according to claim 3, it is characterised in that: the distance of the top of this disposable bottle stopper and spool bottom is 1-7mm.

5. non-refillable miniature gas bottle according to claim 4, it is characterised in that: the top of described disposable bottle stopper to the outer circumference surface between described mating surface is up-small and down-big taper seat.

6. non-refillable miniature gas bottle according to claim 5, it is characterised in that: described disposable bottle stopper is quality of rubber materials bottle stopper.