CN103772079A - Permissible detonating cord for coal mine, and cord maker thereof - Google Patents
Permissible detonating cord for coal mine, and cord maker thereof Download PDFInfo
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- CN103772079A CN103772079A CN201410013732.4A CN201410013732A CN103772079A CN 103772079 A CN103772079 A CN 103772079A CN 201410013732 A CN201410013732 A CN 201410013732A CN 103772079 A CN103772079 A CN 103772079A
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Abstract
The invention relates to a permissible detonating cord for a coal mine. The core of the detonating cord is mixed type explosive and comprises the following formulas in percentage by weight: 93%-97% of PETN (pentaerythritol tetranitrate) or RDX and 3%-7% of flame inhibitor A; the core is coated with a flame inhibitor B, the formula of the flame inhibitor B is as follows in percentage by weight: 60%-80% of alkaline metal halide, and 20-40% of halogenated hydrocarbon. A cord production machine for producing the detonating cord comprises a rack, a first coil and a second coil are arranged on the rack and are respectively provided with a forming die and a fibrous scaffold, and an explosive feeding device is arranged on the forming die of the second coil. The flame inhibitor is added in the core and the core is coated with the flame inhibitor, so as to omit the asphalt coating, so that the detonating cord is safe and reliable, and the hidden safety hazard of the coal mine can be eliminated; the flame inhibitor feeding device is additionally arranged on the basis of the existing detonating cord production machine, so that the mass production of the detonating cord can be realized.
Description
Technical field
The invention belongs to explosive technical field, be specifically related to a kind of primacord fuse and explosive leading cable producing machine.
Background technology
Existing coal permissible detonating cord has safe reliability not high, and the quality control in production process is more difficult, the problem that quality stability is poor.The structure of existing coal permissible detonating cord is: medicine core is PETN or RDX, adopts cotton thread parcel medicine core, at the surface-coated pitch of cotton thread, uses asphalt adhesive flame-cooling agent, then flame-cooling agent is wrapped up with cotton thread, finally surface-coated plastic layer outside.After the coal permissible detonating cord blast that this mode is produced, the quick-fried temperature of medicine core is higher, pitch and cotton thread be generating gasification or dust formation under high temperature and shock wave, these materials are easily lighted after mixing with Coal mine methane gas under the high temperature action of medicine core, cause gas explosion accident.In addition, the bonding flame arrest dosage of pitch is few, and adhesive capacity is also unstable, also easily shakes off in process of production, causes the gas safe reliability variation of coal permissible detonating cord, for Safety of Coal Mine Production is brought hidden danger.
Summary of the invention
The object of the present invention is to provide a kind of steady quality reliable, use safe coal permissible detonating cord, a kind of manufacturing technology of producing above-mentioned primacord fuse in enormous quantities is provided simultaneously.
The object of the invention is to be achieved through the following technical solutions: a kind of coal permissible detonating cord, comprise medicine core and heart yearn, the outer mode of parcel with one heart that adopts of described medicine core is coated with flame-cooling agent, described medicine core and described flame-cooling agent all have looping material outward, described flame-cooling agent B and described looping material all with concentric parcel of described medicine core, described looping material is man-made fiber or film, and the outside surface of described primacord fuse applies thermoplastics or rubber; Described medicine core is mixed type explosive, and the formulation weight ratio of described medicine core is: PETN or RDX 93%-97%, flame-cooling agent A 3%～7%; The formulation weight ratio of described flame-cooling agent B is: alkali-metal halogenide 60%～80%, halon 20%～40%.
Wherein, described flame-cooling agent A is clorafin 70.
Wherein, described film is ribbon polyester film or polypropylene screen, and wide is 15mm～22mm, and thick is 0.05～0.10mm.
Wherein, the coat-thickness of described thermoplastics or rubber is 0.1mm～0.6mm.
Wherein, a kind of rope making machine of manufacturing above-mentioned coal permissible detonating cord, described rope making machine comprises frame, slubbing Pan He bis-road dishes are installed in described frame, on described slubbing dish and described two road dishes, be equipped with forming mould and fibrous framework, between described slubbing dish and described two road dishes, be provided with lower medicine device, described lower medicine device is positioned on described forming mould.
Wherein, in described frame, be also provided with stabilizing mechanism.
The invention has the beneficial effects as follows: add flame-cooling agent at medicine in-core, can reduce the quick-fried temperature of medicine core, reduce the mechanical sensitivity of medicine core explosive.Meanwhile, adopt medicine core and flame-cooling agent concentric covering charging means, cancelled bituminous coating, make primacord fuse safe and reliable.On existing explosive leading cable producing machine enters, increase medicine device under flame-cooling agent, can carry out mass production, production efficiency is identical with common primacord fuse.
Accompanying drawing explanation
Fig. 1 is the structural representation of primacord fuse in the present invention;
Fig. 2 is the structural representation of rope making machine in the present invention;
In figure, 1, heart yearn, 2, medicine core, 3, polypropylene film, 4, internal layer man-made fiber, 5, flame-cooling agent layer, 6, middle level man-made fiber, 7, outer man-made fiber, 8, thermoplastic plastic layer, 9, lower pencil, 10, inner mold, 11, outer mold, 12, film frame, 13, film tape, 14, slubbing dish, 15, fibrous framework, 16, man-made fiber, 17, two road dishes, 18 times medicine devices, 19, flame-cooling agent B, 20, stabilizing mechanism, 21, slubbing disk molding die, 22, two road disk molding dies.
Embodiment
A kind of coal permissible detonating cord, comprise medicine core 2 and heart yearn 1, described heart yearn 1 quantity is four, described medicine core 2 is mixed type explosive, the formulation weight ratio of described medicine core 2 is: PETN or RDX are 93%-97%, clorafin 70 is 3%～7%, and the granularity of described medicine core 2 is 22 order～60 orders, and the explosive load of described medicine core 2 is 11g/m～13 g/m; Described medicine core 2 is coated with polypropylene film 3, and described polypropylene film 3 is wide is 15mm～22mm, and thick is 0.05～0.10mm; Described polypropylene film 3 is coated with internal layer man-made fiber 4, outside described internal layer man-made fiber 4, there is flame-cooling agent layer 5, described flame-cooling agent layer 5 forms for flame-cooling agent B wraps up medicine core with one heart, the formulation weight ratio of described flame-cooling agent B is: alkali-metal halogenide 60%～80%, halon 20%～40%, granularity is 22 order～60 orders; With middle level man-made fiber 6 and outer man-made fiber 7, flame-cooling agent B is wrapped again.The outside surface of described primacord fuse is coated with thermoplastic plastic layer 8, and described thermoplastic plastic layer's 8 thickness is 0.1mm～0.6mm.
A kind of rope making machine of manufacturing above-mentioned coal permissible detonating cord, comprise frame, described frame is provided with slubbing dish 14He bis-road dishes 17, on described slubbing dish 14 and described two road dishes 17, be equipped with forming mould and fibrous framework 15, described slubbing disk molding die 21 tops are provided with outer mold 11, in described outer mold 11, be provided with inner mold 10 and lower pencil 9, on described fibrous framework 15, be placed with man-made fiber volume 16; Between described slubbing dish 14 and described two road dishes 17, be provided with lower medicine device 18, described lower medicine device 18 is positioned on described two road disk molding dies 21, and described frame is provided with stabilizing mechanism 20 and film frame 12.
This coal permissible detonating cord adopts conventional winding-type structure, first in explosive, evenly sneaks into clorafin 70, makes mixed type explosive medicine core.Explosive medicine core, under the effect of gravity, flows into from lower pencil 9 in the prescribe medicine hole of inner mold 10 equably, and medicine core explosive load is 12g/m～20 g/m; Meanwhile, film tape 13, under the constraint of outer mold 11, is curled into bell mouth shape by ribbon, and the blasting explosive package flowing out from inner mold 10 is wrapped, and guarantees that wrapped explosive is uniformly distributed in film.Being gone out after inner mold 10 and to wrap with internal layer man-made fiber slubbing disk molding die 21 is interior by the medicine core of film wrapped, has been strand from slubbing dish 14 by the medicine core of film and internal layer man-made fiber parcel out.Under the control of stabilizing mechanism 20, continue to enter medicine device 18 center under flame-cooling agent, lower medicine device 18 loads flame-cooling agent B 19 with one heart at the periphery of medicine core, the explosive load of flame-cooling agent B is 12g/m～20 g/m, flame-cooling agent B filling Hou bis-road disk molding dies 22 are interior to be wrapped up and tying tight with middle level man-made fiber, finally tie tight with the reverse parcel of outer man-made fiber fixing, make primacord fuse work in-process.
Constraint through powder charge and three layer lines is fixed, medicine core has had certain packing density, guarantee that primacord fuse possesses certain detonation property, the coated and Intake Quantity with one heart of flame-cooling agent B is also guaranteed simultaneously, has had the effect of isolation detonation product and extraneous inflammable gas.Finally, be coated with last layer plastics at the outside surface of primacord fuse, for fixing primacord fuse, and make primacord fuse possess corresponding humidity resistance and the effect that improves primacord fuse product appearance.
Detailed introduction to a kind of coal permissible detonating cord provided by the present invention and rope making machine thereof above, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (6)
1. a coal permissible detonating cord, comprise medicine core and heart yearn, the outer mode of parcel with one heart that adopts of described medicine core is coated with flame-cooling agent B, described medicine core and described flame-cooling agent B all have looping material outward, described flame-cooling agent B and described looping material all with concentric parcel of described medicine core, described looping material is man-made fiber or film, and the outside surface of described primacord fuse applies thermoplastics or rubber; It is characterized in that, described medicine core is mixed type explosive, and the formulation weight ratio of described medicine core is: PETN or RDX 93%-97%, flame-cooling agent A 3%～7%; The formulation weight ratio of described flame-cooling agent B is: alkali-metal halogenide 60%～80%, halon 20%～40%.
2. a kind of coal permissible detonating cord according to claim 1, is characterized in that, described flame-cooling agent A is clorafin 70.
3. a kind of coal permissible detonating cord according to claim 1, is characterized in that, described film is ribbon polyester film or polypropylene screen, and wide is 15mm～22mm, and thick is 0.05～0.10mm.
4. a kind of coal permissible detonating cord according to claim 1, is characterized in that, the coat-thickness of described thermoplastics or rubber is 0.1mm～0.6mm.
5. the rope making machine for the manufacture of a kind of coal permissible detonating cord described in claim 1-3 any one, described rope making machine comprises frame, slubbing Pan He bis-road dishes are installed in described frame, on described slubbing dish and described two road dishes, be equipped with forming mould and fibrous framework, it is characterized in that, between described slubbing dish and described two road dishes, be provided with lower medicine device, described lower medicine device is positioned on described forming mould.
6. a kind of rope making machine according to claim 5, is characterized in that, is also provided with stabilizing mechanism in described frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013732.4A CN103772079A (en) | 2014-01-13 | 2014-01-13 | Permissible detonating cord for coal mine, and cord maker thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013732.4A CN103772079A (en) | 2014-01-13 | 2014-01-13 | Permissible detonating cord for coal mine, and cord maker thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103772079A true CN103772079A (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410013732.4A Pending CN103772079A (en) | 2014-01-13 | 2014-01-13 | Permissible detonating cord for coal mine, and cord maker thereof |
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| CN (1) | CN103772079A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104829402A (en) * | 2015-05-13 | 2015-08-12 | 湖北帅力化工有限公司 | Environment-friendly type common cotton thread detonating cord |
| CN108892596A (en) * | 2018-07-23 | 2018-11-27 | 江西赣州国泰特种化工有限责任公司 | A kind of medicine core and preparation method thereof of water resistant primacord |
| CN109320389A (en) * | 2018-08-30 | 2019-02-12 | 四川航天川南火工技术有限公司 | A kind of solar heat protection primacord and preparation method thereof |
| CN109836301A (en) * | 2019-04-04 | 2019-06-04 | 陕西渭南庆华化工有限公司 | A kind of primacord with multicore structure |
| CN114166077A (en) * | 2021-12-15 | 2022-03-11 | 安徽理工大学 | Dampproofing fireworks lead wire gunpowder is around package device |
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| GB1006441A (en) * | 1964-07-10 | 1965-10-06 | Ensign Bickford Co | Detonating fuse |
| US3796126A (en) * | 1972-06-19 | 1974-03-12 | Ici Ltd | Controlled feeding of powdered material |
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| CN102060637A (en) * | 2010-11-15 | 2011-05-18 | 云南燃二化工有限公司 | Novel coal permissible detonating cord |
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| GB1006441A (en) * | 1964-07-10 | 1965-10-06 | Ensign Bickford Co | Detonating fuse |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104829402A (en) * | 2015-05-13 | 2015-08-12 | 湖北帅力化工有限公司 | Environment-friendly type common cotton thread detonating cord |
| CN104829402B (en) * | 2015-05-13 | 2017-11-17 | 湖北帅力化工有限公司 | A kind of common cotton thread primacord of environment-friendly type |
| CN108892596A (en) * | 2018-07-23 | 2018-11-27 | 江西赣州国泰特种化工有限责任公司 | A kind of medicine core and preparation method thereof of water resistant primacord |
| CN109320389A (en) * | 2018-08-30 | 2019-02-12 | 四川航天川南火工技术有限公司 | A kind of solar heat protection primacord and preparation method thereof |
| CN109836301A (en) * | 2019-04-04 | 2019-06-04 | 陕西渭南庆华化工有限公司 | A kind of primacord with multicore structure |
| CN109836301B (en) * | 2019-04-04 | 2024-02-27 | 陕西渭南庆华化工有限公司 | Detonating cord with multicore structure |
| CN114166077A (en) * | 2021-12-15 | 2022-03-11 | 安徽理工大学 | Dampproofing fireworks lead wire gunpowder is around package device |
| CN114166077B (en) * | 2021-12-15 | 2023-11-14 | 浏阳市华力烟花制造有限公司 | Moistureproof firework lead gunpowder wrapping device |
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Application publication date: 20140507 |
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