CN2373777Y

CN2373777Y - Controllable low-temp. blaster

Info

Publication number: CN2373777Y
Application number: CN 99212956
Authority: CN
Inventors: 张海成
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-06-11
Filing date: 1999-06-11
Publication date: 2000-04-12
Anticipated expiration: 2009-06-11

Abstract

The utility model provides a controllable low temperature blaster which is a safe, controllable mining device with a high block rate for mining. The utility model is composed of a pipe-shaped main body, a heater which is arranged in the hole of the main body and is easy of vapour, a fluid filling valve which is arranged at one end of the body, seals a hole opening and is provided with two electrode holes and a controlled energy releasing device which is arranged on the other hole opening of the main body and is composed of a bursting sheet and a multihole energy discharging head. The device functions ore beds by heating, evaporating, voltage boosting and energy releasing for fluid in the inner cavity of the main body so that the ore beds are collapsed. The strength of the utility model has the effects of low temperature and breathing pressure relative to explosives. So destructiveness is reduced, and the block rate is generally enhanced by 30 percents right and left by experiment. The utility model has the advantages of small fume, non-poisonous flavor and non-odor flavor, and is beneficial to worker health.

Description

Controllable type low temperature blaster

The utility model is to be mainly used in mining, particularly to use gasifying liquid to carry out the device of blasting excavation.

At present, because the restriction of production technique, the product piece rate in the coal production is not high.Big gun commonly used is adopted production, because the explosive HTHP, reaction is rapid, and moment is to the coal seam work done, therefore impact is big, causes the comminuted destruction in coal seam, and it is low to produce the piece rate, generally between 10-20%, part ultrahard coal can reach about 60% charcoal piece rate according to investigations, but for counting seldom; In mechanized equipment is mined, because of coal cutting cylinder technology and efficient requirement, charcoal yield lower (being no more than 10%).Therefore current coal production can't be satisfied the needs of market to the charcoal piece, has also caused the huge waste (value of smalls is lower than the value of piece charcoal) of resource inherent value.

For these reasons, the purpose of this utility model is to provide a kind of and is applicable to different atures of coal, produces piece rate height, safe and reliable quarrying apparatus.

The technical solution of the utility model is a kind of low temperature blaster of controlling burst pressure, detonation velocity of design, it comprises a cast main body, be contained in the heater of cast main body inner chamber and be easy to gasifying liquid, be contained in cast main body one end and can seal the liquid-filling valve that is provided with two electrode holes in aperture, but what be contained in that the cast main body other end seals the aperture lets out the controlled release energy device of can head forming, the electrical source importing device that is connected with the liquid-filling valve other end by rupture disk and porous.

Above-mentioned heater is made up of cast metallic heating body, the electrode lead body that is contained in heating wire in the heater, insulating materials, two electrodes that are connected with heating wire and plays fixing and sealing function.

Liquid-filling valve comprises the column type valve body that is tightly connected with cast main body threaded one end, is contained in spool, housing screw, spring in the valve opening, also is provided with two electrode holes parallel with axis in the column type valve body, with the vertical liquid injection hole that communicates of valve opening.

But controlled release can device comprise is connected with cast main body other end thread seal have a ladder hole release the energy body, be contained in the sealing gasket in the body through-holes, thickness is that rupture disk, the aperture of 0.5-2mm is the cleavage block of φ 5-20mm, with body tip be threaded in have a deep hole, circumference to establish more than four to become 90 ° and can the hole less than 90 ° let out with it.

Electrical source importing device comprises adapter sleeve, the metallic object shell that is threaded with liquid-filling valve, adorns rubber bodies within it, places two electrode plug housings of rubber bodies, and the metal baffle, clamping screw and the cable that are contained in the metallic object afterbody are introduced sheath, clamping plate.

The liquid that is easy to vaporize in the cast main body is CO ₂Or N ₂

After adopting such scheme, during use, inject liquid CO from the liquid injection hole of blaster liquid-filling valve ₂Or N ₂, enter cast main body inner chamber through valve opening, because all shutoff of main body two ends, liquid can not flow out.Blaster can be packed into after filling in the boring of accomplishing fluently.Power switch is connected, and the liquid in the blaster heats up rapidly, vaporizes, when pressure reaches requirement pressure, and the rupture disk fracture, pressure to the ore bed work done, makes it avalanche by letting out porous, the multi-direction ejection at a high speed around boring on can head.Compare with explosive, have low temperature, slow effect of pressing, so destructiveness reduces greatly, the piece rate improves greatly, through test, produces the piece rate and generally can on average improve about 30%.Simultaneously, by transposing release can device the thickness of borehole blasting sheet, change the internal diameter of cutting head, controlled blasting pressure reasonably, the speed that control releases energy; Also can change the liquid storage amount,, thereby but realize controlled blasting with change mining depth, thickness, coal breakage amount by changing the cast principal length.Like this, under the condition of different regions, different ature of coal hardness, it is just right that burst pressure, speed, adjustment are controlled at, to reach the purpose of high yield piece rate.

This device is because pressure release is slow relatively, and is very little to roof destruction, adds CO ₂, N ₂Be fire-retardant gas, reduced the explosivity of gas, improved mining safety, because of CO ₂, N ₂Have no side effect.Useful in workers ' health.

Below in conjunction with accompanying drawing embodiment of the present utility model is further specified.

Fig. 1 is the utility model controllable type low temperature blaster assembly drawing;

Fig. 2 is several form structure figure of the cast main body in the above-mentioned blaster;

Fig. 3 be in Fig. 1 blaster each of liquid-filling valve to view;

Fig. 4 is the structure diagram of electric heater in the blaster;

Fig. 5 is the structure diagram of electrical source importing device in the blaster;

But Fig. 6 is the structure diagram of controlled release energy device in the blaster;

Fig. 7 is that but controlled release can the another kind of form structure sketch of device in the blaster.

In Fig. 1, controllable type low temperature blaster consists of the following components, 1 is the cast main body, the left end liquid-filling valve 2 that is threaded, the controlled release energy device 5 but right-hand member is threaded, cast main body inner chamber is fixed with electric heater 3, and support 6 supportings are arranged, and electrical source importing device 4 is threaded with the other end of liquid-filling valve.

Fig. 2 is several forms of blaster cast main body 1, and last figure is an I.S.S, and two ends are identical; Middle figure is the external screw thread formula; Figure below is an I.S.S, the two ends difference; Middle figure right-hand member and figure below inner chamber right-hand member are bottleneck formula 7.When adopt figure below right-hand member mode can save among Fig. 6 release can body 32, directly can 36 be used, have designs simplification, rationally with the cast main body by letting out, but main body processing technology relative complex, several forms can be used in mixing alternate with each other among the figure, grasp flexibly.

Fig. 3 be each of blaster liquid-filling valve to view, column type valve body 14 takes into account that liquid to be charged into and fixedly mount heater dual-purpose.Valve body right-hand member and cast main body threaded engagement, left end and electrical source importing device threaded engagement.Among the figure, housing screw 8, spool 9, spring 11, sealing ring 10 have been finished jointly to cast main body internal-filling liquid, tapping and sealing function.Process is as follows: unclamp housing screw, spring backs down spool, and liquid enters perpendicular fluid injection valve opening 12 through ladder liquid injection hole 15, to the aperture 13 that communicates with the cast main body, charges into cast main body inner chamber; After liquid is full of, tighten housing screw, the compressing spool is sealed microstome, has played sealing function, when handling failure need be drained inner chamber liquid, can unclamp housing screw gas is discharged.Also be provided with the two through hole parallel with axis 16 in the valve body as two electrode holes, when figure mode (in as Fig. 2) liquid-filling valve can change the internal thread form into when the cast main body adopts external screw thread.

Fig. 4 is the structure diagram of electric heater, metallic heating body is two metal tubes 19 among the figure, metal tube one end is welded in metal derby 22 cavitys, the other end welds two staged electrode lead bodies 18, two electrodes 17 are drawn, the electrode lead body is fixed with nut and liquid-filling valve 2 ends and is sealed, and seal form can be used the tapering linear sealing form on Figure 18 electrode lead body, also can adopt the sealing of figure below step cushioning; Dress heating wire 20 in the middle of two metal tube bodys is filled with crystal magnesium oxide 21 on every side, plays insulation and conductive force.Two heating wire, one end is welded in metal derby 22 cavitys, and the other end is connected with two electrodes 17, and two electrodes pass electrode lead body 18, is connected with plug housing 27 in the electrical source importing device.

Fig. 5 is an electrical source importing device in the controllable type low temperature blaster, be to use the no-spark type electrical source importing device that is provided with in place with flammable explosion hazard gases for adapting under the coal mine, two electrode plug housings 27 are in the centre of rubber bodies 28, can cooperate connection with the electric heater electrode, metallic object shell 26 is fixing dead with rubber bodies, after cable partly connects from sheath 30 introducings and with two electrode plug housing upper screw, clamping plate 31 clamp cable, on rubber bodies, add a cover a serum cap 25, press metal baffle 24, clamping screw 23 is tightened, live part all is in the rubber bodies.During use, the blaster that will be full of liquid is contained in the boring, the plug housing 27 of electrical source importing device is aimed at two electrodes 17 insert; turn adapter sleeve 29 is an one with liquid-filling valve 2; such two electrodes 17 are protected by rubber bodies and are isolated, and do not produce spark in the use, satisfy the performance of no-spark equipment.

But Fig. 6 is the controlled release energy device in the controlled standard low temperature blaster, release and to be threaded with tube-shaped main body by body 32 left ends, and add sealing gasket sealing, about communicate into stepped through hole, right-hand member is provided with sealing gasket 33, rupture disk 34 and cutting head 35, letting out can 36, let out and can a circumference be provided with 6 let out can hole 37, wherein 3 vertical with main aperture, 3 become 60 ° of directions inclinations with main aperture.

In Fig. 6, can be according to the difference of tube-shaped main body, take different the releasing can structure respectively, release can body 32 time when saving, can finish rupture disk and cut by letting out can head directly to cooperate with the tube-shaped main body right-hand member, making letting out of several different inner diameters can head, uses as under the different situations, can save cutting head simultaneously like this.

In Fig. 7, but 32 ' be the another kind of form that controlled release can body, this form cooperates with external screw thread formula cast main body.35 ' form among the also available figure of cutting head is let out and can 36 ' can save internal thread this moment.

Claims

1, a kind of controlled standard low temperature blaster that is used for mining, it is characterized in that: it comprises a cast main body, be contained in the heater of cast main body inner chamber and be easy to gasifying liquid, be contained in cast main body one end and can seal the liquid-filling valve that is provided with two electrode holes in aperture, but what be contained in that the cast main body other end seals the aperture lets out the controlled release energy device of can head forming, the electrical source importing device that is connected with the liquid-filling valve other end by rupture disk and porous.

2, controllable type low temperature blaster according to claim 1, it is characterized in that heater is made up of cast metallic heating body, the electrode lead body that is contained in heating wire in the heater, insulating materials, two electrodes that are connected with heating wire and plays fixing and sealing function.

3, controllable type low temperature blaster according to claim 1 and 2, it is characterized in that, liquid-filling valve comprises the column type valve body that is tightly connected with cast main body threaded one end, be contained in spool, housing screw, spring in the valve opening, also be provided with two electrode holes parallel in the column type valve body, with the vertical liquid injection hole that communicates of valve opening with axis.

4, according to claim 1 or 2 or 3 described controllable type low temperature blasters, it is characterized in that, but controlled release can device comprise is connected with cast main body other end thread seal have a ladder hole release the energy body, be contained in the sealing gasket in the body through-holes, thickness is that rupture disk, the aperture of 0.5-2mm is the cleavage block of φ 5-20mm, with body tip be threaded in have a deep hole, circumference to establish more than four to become 90 ° or can the hole less than 90 ° let out with it.

5, according to claim 1 or 2 or 3 or 4 described controllable type low temperature blasters, it is characterized in that, electrical source importing device comprises adapter sleeve, the metallic object shell that is threaded with liquid-filling valve, dress rubber bodies within it, place two electrode plug housings of rubber bodies, be contained in metal baffle, the clamping screw of metallic object afterbody, and cable is introduced sheath, clamping plate.

6, controllable type low temperature blaster according to claim 1 is characterized in that, the liquid that is easy to vaporize in the cast main body is CO ₂Or N ₂