CN202372073U - Gunpowder filling pipe for coalmine deep-hole exploding gunpowder column - Google Patents
Gunpowder filling pipe for coalmine deep-hole exploding gunpowder column Download PDFInfo
- Publication number
- CN202372073U CN202372073U CN2011205419723U CN201120541972U CN202372073U CN 202372073 U CN202372073 U CN 202372073U CN 2011205419723 U CN2011205419723 U CN 2011205419723U CN 201120541972 U CN201120541972 U CN 201120541972U CN 202372073 U CN202372073 U CN 202372073U
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- China
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- gunpowder
- upper plug
- end cap
- plug
- plug head
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Abstract
The utility model relaters to a gunpowder filling pipe for a coalmine deep-hole exploding gunpowder column. The gunpowder filling pipe comprises a pipe body made from rigid plastics, an upper plug and a lower plug, wherein the lower plug is a cover with a sealed end, the opening end of the lower plug is in interference fit with the lower port of the pipe body, the diameter of the lower part of the lower plug is less than that of the opening end, and the lower part of the lower plug is provided with an external thread; and the upper plug is a cover with a sealed end, the outer diameter of the upper plug is in interference fit with the upper port of the pipe body, the opening end of the upper plug is provided with an outwards-overturned lug boss, the diameter of the outwards-overturned lug boss of the upper plug is as the same as the outer diameter of the pipe body, and the inner wall of the opening end of the upper plug is provided with an internal thread which is matched with the external thread on the lower plug. The upper plug and the lower plug of the gunpowder filling pipe are hard to fall off, and the gunpowder filling density in the pipe body of the gunpowder column is increased; and gunpowder is convenient to fill due to a deep hole, the gunpowder filling pipe is reasonable in structural design, and the gunpowder is smooth to fill due to the deep hole, so that the gunpowder filling pipe is convenient to popularize and use.
Description
Technical field
The utility model belongs to coal mine deep hole, and (hole depth 20～120m) blasting technique fields are specifically related to make the powder charge pipe of a kind of coal mine deep hole explosion powder column of coal seam or rock stratum presplitting.
Background technology
At present; Under the coal mine, for the gas permeability that improves the coal seam to improve the gas pumping rate or actual mining carries out leading presplitting in the face of top board or crosses tomography and all need carry out deep hole blasting combining the machine of adopting in the coal seam, for overcoming the pipe effect of deep hole blasting powder charge; The one, primacord is loaded on earlier in the big gun hole; Again the rolling permitted explosive for coal mine one of paper web or plastic skin packing roll up is packed in the big gun hole, softer and be easy to breakage, the quite tired ability of deep hole (greater than 20m) powder charge owing to the powder stick shell; In the big gun hole, the charging machine input cost is high again if the employing charging machine is packed bulk explosive into; (see Chinese patent " coal mine gas extraction explosion powder column " if adopt coal mine gas extraction explosion powder column; The patent No. is 200920173412.X), owing to the upper plug head and the outer respectively two ends that are enclosed within body of lower end cap of powder column, the body two ends have been increased the external diameter of powder column; On the one hand; Pretend with the explosive of diameter, then need increase the aperture in big gun hole, increased the cost of boring.On the other hand, last lower end cap overcoat is at the two ends of body, forms one little at the two ends of powder column pipe, when in the hole, forming a step because of lithology is different when the bores are being drilled, can't powder column be packed in the big gun hole.In addition,, be difficult to shutoff, also be prone to cause upper plug head to come off because the upper plug head enclosing cover in the upper end of powder column body, makes powder column pipe inside contain air.
Summary of the invention
In order to overcome the deficiency on the powder charge tubular construction that existing coal mine deep hole explosion powder column uses, the utility model provides a kind of powder charge pipe that is used for coal mine deep hole explosion powder column that improves structure.
The concrete Technological improvement plan of the utility model is following:
The powder charge pipe that is used for coal mine deep hole explosion powder column comprises body, upper plug head and the lower end cap of rigid plastics.Said lower end cap is the lid of the short tube shape of end sealing, and the lower port interference fit of the upper open end of lower end cap and body, the lower diameter of lower end cap are less than the openend diameter, and the bottom of lower end cap is provided with external screw thread; Said upper plug head is the lid of the short tube shape of end sealing; The port interference fit of the external diameter of upper plug head and body; The openend of upper plug head is provided with the boss that turns up; The boss diameter that upper plug head turns up is identical with the body external diameter, the openend inwall of upper plug head be provided with lower end cap on the internal thread that cooperates of external screw thread.
Be provided with the rounding frustum of transition between the openend of said lower end cap and the bottom, the excircle place of the openend of said lower end cap and rounding frustum junction is provided with annular boss; Said annular boss contacts with the end of the lower port of body.
Characteristics of the utility model are that to select powder column powder charge body for use be plastic conduit; Public female upper plug head and the lower end cap structure that connects of each design of two ends; The maximum outside diameter of two plugs equals the external diameter of plastic conduit, guarantees between the powder column pipe that butt joint is convenient and deep hole explosive is smooth and easy.
Another characteristics of the utility model are when powder charge, at first with lower end cap the under shed of plastic conduit are sealed, and after the explosive jar in the powder column pipe is expired, with the upper end that is pressed in plastic conduit in the upper plug head, the upper shed of plastic conduit are sealed.The upper plug head difficult drop-off has increased degree of packing simultaneously again.
The advantage of the utility model is that deep hole explosive is convenient, reasonable in design, and explosive loading density increases in the last lower end cap difficult drop-off, powder column pipe, is convenient to promote the use of.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the lower end cap structural representation.
Fig. 3 is the upper plug head structural representation.
Fig. 4 is the utility model user mode sketch map.
Sequence number among the last figure: body 1, lower end cap 2, upper plug head 3, propagation of explosion body 4, explosive 5.
The specific embodiment
Below in conjunction with embodiment the utility model is done explanation further.
Embodiment 1:
Referring to Fig. 1, the powder charge pipe that is used for coal mine deep hole explosion powder column comprises the body 1 of rigid plastics, upper plug head 3 and lower end cap 2.Lower end cap 2 is the lid of the short tube shape of end sealing; The lower port interference fit of the openend of lower end cap 2 and body 1; The lower diameter of lower end cap 2 is less than the openend diameter; Be provided with the rounding frustum of transition between the openend of lower end cap 2 and the bottom, the excircle place of the openend of lower end cap 2 and rounding frustum junction is provided with annular boss, sees Fig. 2; This annular boss contacts with the end of the lower port of body 1; The bottom of lower end cap 2 is provided with external screw thread.Upper plug head 3 is the lid of the short tube shape of end sealing; See Fig. 3; The port interference fit of the external diameter of upper plug head 3 and body 1; The openend of upper plug head 3 is provided with the boss that turns up, and the boss diameter that upper plug head 3 turns up is identical with the external diameter of body 1, the openend inwall of upper plug head 3 be provided with lower end cap 2 on the internal thread that cooperates of external screw thread.
During use, with lower end cap 2 lower port of the body 1 of rigid plastics is sealed earlier, then in body 1, pack into propagation of explosion body 4 and explosive 5 are pressed into upper plug head 3 in the port of body 1 again, and the port of body 1 is sealed.
Embodiment 2:
The external diameter of body 1 is 63 mm, and wall thickness is 2mm, and long is 97cm.Other is with embodiment 1.The lower end cap 2 that will be complementary with it earlier is pressed into the lower port of body 1; Then propagation of explosion body 4 is put into body 1, with three grades of water gel explosives for mine 5 body is expired for 1 jar again, at last upper plug head 3 is pressed into the port of body 1; Promptly making length is about 100cm, and density is 1.12g/cm
3, explosion velocity is three grades of allowed for use in coal mines glue deep hole blasting powder columns of 6580 m/s.(note; The rigid plastics length of tube is 97cm, but the external thread length of the lower end of lower end cap is about 2.5cm, so the length overall of powder column is about 100cm)
Embodiment 3:
The external diameter of body 1 is 75 mm, and wall thickness is 1.5mm, and long is 97.5cm.Other is with embodiment 1.The lower end cap 2 that will be complementary with it earlier is pressed into the lower port of body 1; Then propagation of explosion body 4 is put into body 1, with three grades of emulsion explosive for coal mine 5 body is expired for 1 jar again, at last upper plug head 3 is pressed into the port of body 1; Promptly making length is about 100cm, and density is 1.15g/cm
3, explosion velocity is three grades of allowed for use in coal mines emulsification deep hole blasting powder columns of 6720 m/s.
Claims (2)
1. the powder charge pipe that is used for coal mine deep hole explosion powder column; The body, upper plug head and the lower end cap that comprise rigid plastics; It is characterized in that: said lower end cap is the lid of the short tube shape of end sealing; The lower port interference fit of the upper open end of lower end cap and body, the lower diameter of lower end cap are less than the openend diameter, and the bottom of lower end cap is provided with external screw thread; Said upper plug head is the lid of the short tube shape of end sealing; The port interference fit of the external diameter of upper plug head and body; The openend of upper plug head is provided with the boss that turns up; The boss diameter that upper plug head turns up is identical with the body external diameter, the openend inwall of upper plug head be provided with lower end cap on the internal thread that cooperates of external screw thread.
2. the powder charge pipe that is used for coal mine deep hole explosion powder column according to claim 1; It is characterized in that: be provided with the rounding frustum of transition between the openend of said lower end cap and the bottom, the excircle place of the openend of said lower end cap and rounding frustum junction is provided with annular boss; Said annular boss contacts with the end of the lower port of body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205419723U CN202372073U (en) | 2011-12-22 | 2011-12-22 | Gunpowder filling pipe for coalmine deep-hole exploding gunpowder column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205419723U CN202372073U (en) | 2011-12-22 | 2011-12-22 | Gunpowder filling pipe for coalmine deep-hole exploding gunpowder column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202372073U true CN202372073U (en) | 2012-08-08 |
Family
ID=46595770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205419723U Expired - Lifetime CN202372073U (en) | 2011-12-22 | 2011-12-22 | Gunpowder filling pipe for coalmine deep-hole exploding gunpowder column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202372073U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878878A (en) * | 2012-10-28 | 2013-01-16 | 祝云辉 | Layered explosive charging packing device for blasting |
| CN104006709A (en) * | 2014-05-15 | 2014-08-27 | 广东宏大爆破股份有限公司 | Temperature-resistance thermal insulation protecting bush |
-
2011
- 2011-12-22 CN CN2011205419723U patent/CN202372073U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878878A (en) * | 2012-10-28 | 2013-01-16 | 祝云辉 | Layered explosive charging packing device for blasting |
| CN104006709A (en) * | 2014-05-15 | 2014-08-27 | 广东宏大爆破股份有限公司 | Temperature-resistance thermal insulation protecting bush |
| CN104006709B (en) * | 2014-05-15 | 2016-06-01 | 宏大矿业有限公司 | Heatproof heat shield |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |
|
| CX01 | Expiry of patent term |