CN111233588B - Pneumatic continuous explosive mixing device for production of expanded explosives - Google Patents
Pneumatic continuous explosive mixing device for production of expanded explosives Download PDFInfo
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- CN111233588B CN111233588B CN202010196257.4A CN202010196257A CN111233588B CN 111233588 B CN111233588 B CN 111233588B CN 202010196257 A CN202010196257 A CN 202010196257A CN 111233588 B CN111233588 B CN 111233588B
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0008—Compounding the ingredient
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B31/00—Compositions containing an inorganic nitrogen-oxygen salt
- C06B31/28—Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate
- C06B31/285—Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate with fuel oil, e.g. ANFO-compositions
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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Accessories For Mixers (AREA)
Abstract
The invention discloses a pneumatic continuous explosive mixing device for production of expanded explosives, which belongs to the field of explosive mixing devices and discloses a pneumatic continuous explosive mixing device for production of expanded explosives, wherein after a mixture of wood powder, industrial salt and expanded materials enters a premixing tank body, one end of a mixing conveying pipe is connected with a discharge hole at the bottom of the premixing tank body, the other end of the mixing conveying pipe is connected with a feed hole at the upper end of a settling tank, and a gas supply device provides gas to convey the mixture of the wood powder, the industrial salt and the expanded materials entering the premixing tank body into the settling tank along the mixing conveying pipe; the inside at least one compounding fan wheel that is provided with of compounding conveyer pipe, the compounding fan wheel with the compounding conveyer pipe rotates the connection, the gas drive that gas supply unit provided the compounding fan wheel rotates to be in with the mixture mixes in the compounding conveyer pipe.
Description
Technical Field
The invention relates to the field of dynamic mixers, in particular to a pneumatic continuous explosive mixing device for expanded explosive production.
Background
The liquid-mixed expanded ammonium nitrate explosive production technology adopts a preparation process of firstly mixing and then expanding, and the preparation principle is as follows: firstly, an oxidant ammonium nitrate solution and a natural agent composite oil phase are mixed in an excimer state under the action of self turbulence in a stirring mixer and a pumping pipeline, so that the problem of mixing uniformity is solved well, the mixing uniformity is improved compared with that in a solid state, the explosion performance of the obtained explosive is obviously improved, and the obtained explosive has certain water resistance; and secondly, a water-in-oil type dispersion system solution formed by the oxidant ammonium nitrate solution and the natural agent composite oil phase is dewatered by adopting a vacuum continuous drying process, so that the drying energy consumption is reduced, and the high-performance expanded ammonium nitrate explosive series products are prepared. The performance index of the liquid-mixed expanded ammonium nitrate explosive is obviously improved, the explosion speed is 3200 one (32mm explosive cartridge) 3500m/s, the explosive degree is 15-18mm, the sympathetic detonation distance is 6-10cm, the explosive density is 0.85-0.92g/cm3, the liquid-mixed expanded ammonium nitrate explosive has certain water resistance, and the sympathetic detonation distance is greater than 4cm after being soaked in water. Dissolving and filtering ammonium nitrate solution and composite oil phase which meet process conditions, conveying the ammonium nitrate solution and the composite oil phase into a dynamic mixer through a screw pump, performing liquid mixing under the action of mechanical mixing, continuously feeding the mixture into a swelling crystallizer for continuous swelling, continuously discharging, mixing and cooling the mixture with quantitative wood powder and industrial salt which meet the process conditions in a continuous explosive mixing system, and finally charging and packaging the mixed explosive.
The mode that current medicine device that mixes generally adopts the spiral to mix the medicine or stir and mix the medicine need avoid mechanical failure to lead to the condition such as friction generate heat when mixing the medicine, and mix the medicine homogeneity and need longer time mix just can obtain guaranteeing, still need cool off after the medicine mixes simultaneously and handle the powder charge after a period to make production cycle increase.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the pneumatic continuous explosive mixing device for expanded explosive production, the heat of the mixture can be taken away through air while pneumatic transmission is carried out, so that subsequent re-cooling treatment is not needed, and the mixture is lifted by wind power and then mixed, so that a better mixing effect can be achieved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a pneumatic continuous explosive mixing device for expanded explosive production, which comprises a wood powder quantitative feeding screw, an industrial salt quantitative feeding screw and an expanded material feeding screw, wherein a mixture of wood powder, industrial salt and expanded materials is provided according to a proportion; the mixing device also comprises a premixing tank body, a mixing delivery pipe, an air supply device and a settling tank; after the mixture of the wood powder, the industrial salt and the puffed material enters the premixing tank body, one end of the mixing conveying pipe is connected with a discharge hole at the bottom of the premixing tank body, the other end of the mixing conveying pipe is connected with a feed inlet at the upper end of the settling tank, and the gas supply device supplies gas to convey the mixture of the wood powder, the industrial salt and the puffed material entering the premixing tank body into the settling tank along the mixing conveying pipe; the inside at least one compounding fan wheel that is provided with of compounding conveyer pipe, the compounding fan wheel with the compounding conveyer pipe rotates the connection, the gas drive that gas supply unit provided the compounding fan wheel rotates to be in with the mixture mixes in the compounding conveyer pipe.
The invention has the preferable technical scheme that the mixing fan wheel comprises a fixed frame and a multi-blade wheel, the fixed frame is fixed on the inner side wall of the mixing conveying pipe, and the multi-blade wheel is rotatably connected with the fixed frame.
The invention preferably adopts the technical scheme that the mixing conveying pipe comprises at least two sections, the distance between two adjacent sections of mixing conveying pipes is more than or equal to 90 degrees, and the section of mixing conveying pipe finally connected with the settling tank is vertically arranged.
The invention has the preferable technical scheme that an air outlet is arranged at the top of the sedimentation tank, a flexible soft sleeve is arranged at the position of the air outlet, which is positioned at the inner side of the sedimentation tank, a filter screen is arranged on the end surface of the flexible soft sleeve, a plurality of soft springs are arranged on the inner side wall of the air outlet, and the other ends of the soft springs are fixedly connected with the filter screen so as to enable the filter screen to vibrate back and forth.
The invention has the preferable technical scheme that the top end of the air outlet is also provided with a fine filter screen, and the fine filter screen is clamped in the air outlet.
The invention has the preferable technical scheme that the air supply device comprises an air pump, an air storage tank, a first air supply pipe and a second air supply pipe; the first air supply pipe and the second air supply pipe are both communicated with the air outlet end of the air storage tank, and the air pump is used for maintaining the air pressure in the air storage tank; the gas outlet end of the first gas supply pipe is communicated with the inner part of the premixing tank body, and the gas outlet end of the second gas supply pipe is communicated with the first section of the mixing conveying pipe.
The invention has the preferable technical scheme that the air outlet ends of the first air supply pipe and the second air supply pipe are respectively provided with an electromagnetic valve, and the side wall of the premixing tank body is provided with an electromagnetic air outlet valve.
The preferable technical scheme of the invention is that the bottom of the settling tank is provided with a mixed discharge outlet.
The invention has the beneficial effects that:
according to the pneumatic continuous explosive mixing device for production of the expanded explosive, the gas supply device provides gas to convey the mixture of the wood powder, the industrial salt and the expanded material entering the premixing tank body to the settling tank along the mixing conveying pipe; the inside at least one compounding fan wheel that is provided with of compounding conveyer pipe, the compounding fan wheel with the compounding conveyer pipe rotates the connection, the gas drive that gas supply unit provided the compounding fan wheel rotates to be in with the mixture mixes in the compounding conveyer pipe. When through the air conveying mixture, the air drive compounding fan wheel is kicked up the mixture and is mixed for it is better to mix the effect, and the heat can be better taken away to the air that flows after the mixture kicked up simultaneously, makes follow-up need not carry out the cold medicine and handles.
Drawings
FIG. 1 is a schematic view of the overall structure of a pneumatic continuous explosive mixing device for expanded explosive production according to an embodiment of the present invention;
FIG. 2 is a schematic view of portion A of FIG. 1 provided in an embodiment of the present invention;
FIG. 3 is a schematic view of a mixing fan wheel section provided in an embodiment of the present invention;
in the figure:
1. a settling tank; 2. a mixing conveying pipe; 3. a premixing tank body; 6. a gas supply device; 7. fine filtering net; 9. a mixing fan wheel; 11. a mixing and discharging opening; 31. an electromagnetic gas outlet valve; 41. a first gas supply pipe; 42. a second gas supply pipe; 43. an electromagnetic valve; 51. wood flour quantitative feeding screw; 52. industrial salt dosing screw; 53. a puff feed screw; 61. a gas storage tank; 62. an air pump; 81. an air outlet; 82. a flexible soft sleeve; 83. a filter screen; 84. a soft spring; 91. a fixed mount; 92. a multi-bladed wheel.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1-3, the pneumatic continuous explosive mixing device for expanded explosive production provided in this embodiment includes a wood flour dosing screw 51, an industrial salt dosing screw 52, and an expanded material feeding screw 53, to provide a mixture of wood flour, industrial salt, and expanded material in a certain proportion; the mixing device also comprises a premixing tank body 3, a mixing conveying pipe 2, an air supply device 6 and a settling tank 1; the mixture of wood flour, industrial salt, puffed material gets into after premixing jar body 3, 2 one ends of compounding conveyer pipe are connected premixing jar body 3 bottom discharge gate, the 2 other ends of compounding conveyer pipe are connected the upper end feed inlet of gunbarrel 1, 1 bottoms of gunbarrel are provided with mixed bin outlet 11. The gas supply device 6 provides gas to convey the mixture of the wood powder, the industrial salt and the puffed material entering the premixing tank body 3 to the precipitation tank 1 along the mixing conveying pipe 2; compounding conveyer pipe 2 is inside to be provided with at least one compounding impeller 9, compounding impeller 9 with compounding conveyer pipe 2 rotates to be connected, the gas drive that gas supply installation 6 provided compounding impeller 9 rotates to be in with the mixture mix in the compounding conveyer pipe 2. The wood flour quantitative feeding screw 51, the industrial salt quantitative feeding screw 52 and the puffed material feeding screw 53 quantitatively feed materials into the premixing tank 3 each time. Then the air supply device 6 is opened to blow the mixture in the premixing tank body 3 into the mixing conveying pipe 2, the air blows the mixing fan wheel 9 in the mixing conveying pipe 2 to rotate, and the mixing fan wheel 9 lifts and mixes the mixture to be uniformly mixed. Simultaneously when the mixture is raised by the mixing fan wheel 9, the mixture is more uniformly contacted with the air, so that the heat of the mixture can be better taken away, and the heat dissipation effect is good.
Preferably, the mixing fan wheel 9 comprises a fixing frame 91 and a multi-impeller 92, the fixing frame 91 is fixed on the inner side wall of the mixing conveying pipe 2, and the multi-impeller 92 is rotatably connected with the fixing frame 91. The multi-impeller 92 is constructed in the form of fan blades, and when gas is blown from one side of the multi-impeller 92, the multi-impeller 92 is driven to rotate, thereby lifting and mixing the mixture passing through the multi-impeller 92. Preferably, the mixing conveying pipe 2 comprises three sections, and the mixing conveying pipe 2 between two adjacent sections is more than or equal to 90 degrees and is vertically arranged at the section which is finally connected with the settling tank 1. The mixing conveying pipe 2 of turning formula sets up and makes the mixture change direction many times to mix more evenly, be provided with a plurality of compounding fan wheel 9 in the mixing conveying pipe 2 and make the mixing effect better.
In order to make the difficult jam in air outlet of gunbarrel 1, gunbarrel 1 top is provided with air exit 81, air exit 81 is located 1 inboard position of gunbarrel is provided with flexible soft cover 82, the terminal surface of flexible soft cover 82 is provided with filter screen 83, air exit 81 inside wall is provided with the soft spring 84 of a plurality of, the other end of soft spring 84 with filter screen 83 fixed connection, so that filter screen 83 makes a round trip to shake. When gas acts on filter screen 83 surface, can extrude filter screen 83 toward air exit 81 direction to make flexible soft cover 82 and soft spring 84 shrink, when gas stops to act on filter screen 83, filter screen 83 then can bounce back, make filter screen 83 constantly shake back and forth. Because the air supply device 6 supplies air intermittently, the filter screen 83 vibrates continuously in the whole process, so that the mixture is not easy to adhere to the holes of the filter screen 83 and the filter screen 83 is not easy to block. Preferably, the top end of the air outlet 81 is further provided with a fine filtering net 7, and the fine filtering net 7 is clamped in the air outlet 81. The mixture dust particles in the discharged gas are reduced by the action of the fine filter 7.
Preferably, the air supply device 6 comprises an air pump 62, an air storage tank 61, a first air supply pipe 41 and a second air supply pipe 42; the first air supply pipe 41 and the second air supply pipe 42 are both communicated with the air outlet end of the air storage tank 61, and the air pump 62 is used for maintaining the air pressure in the air storage tank 61; the air outlet end of the first air supply pipe 41 is communicated with the interior of the premixing tank body 3, and the air outlet end of the second air supply pipe 42 is communicated with the first section of the mixing conveying pipe 2. Preferably, the air outlet ends of the first air supply pipe 41 and the second air supply pipe 42 are both provided with an electromagnetic valve 43, the side wall of the premixing tank body 3 is provided with an electromagnetic air outlet valve 31, and the discharge end of the premixing tank body 3 is also provided with an electromagnetic control valve. The electromagnetic air outlet valve 31 on the side wall of the premixing tank body 3 is firstly opened, so that the internal air pressure of the premixing tank is balanced, the mixture can be conveniently added into the premixing tank, and the mixture cannot be added due to unbalanced air pressure. During the mixing operation, firstly, the electromagnetic control valve at the discharge end of the premixing tank body 3 is opened, the electromagnetic gas outlet valve 31 is closed, then the electromagnetic valve 43 of the first gas supply pipe 41 is opened so as to convey the mixture in the premixing tank into the mixing conveying pipe 2, then the electromagnetic valve 43 of the second gas supply pipe 42 is quickly opened so as to increase the gas intensity in the mixing conveying pipe 2, and after the mixture is conveyed to the sedimentation tank 1, the electromagnetic valves 43 of the first gas supply pipe 41 and the second gas supply pipe 42 are closed at the same time, then the mixture is continuously added into the premixing tank, the above processes are circulated again, and the intermittent continuous mixing is realized. So that the mixing effect is good and the heat can be taken away quickly.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (4)
1. A pneumatic continuous explosive mixing device for expanded explosive production comprises a wood powder quantitative feeding screw (51), an industrial salt quantitative feeding screw (52) and an expanded material feeding screw (53), wherein a mixture of wood powder, industrial salt and expanded material is provided according to a proportion; the method is characterized in that:
the mixing device also comprises a premixing tank body (3), a mixing delivery pipe (2), an air supply device (6) and a settling tank (1);
after the mixture of wood powder, industrial salt and puffed material enters the premixing tank body (3), one end of the mixing conveying pipe (2) is connected with a discharge hole at the bottom of the premixing tank body (3), the other end of the mixing conveying pipe (2) is connected with a feed inlet at the upper end of the settling tank (1), and the gas supply device (6) provides gas to convey the mixture of wood powder, industrial salt and puffed material entering the premixing tank body (3) to the settling tank (1) along the mixing conveying pipe (2);
at least one mixing fan wheel (9) is arranged inside the mixing conveying pipe (2), the mixing fan wheel (9) is rotatably connected with the mixing conveying pipe (2), and the gas supplied by the gas supply device (6) drives the mixing fan wheel (9) to rotate so as to mix the mixture in the mixing conveying pipe (2);
the mixing fan wheel (9) comprises a fixed frame (91) and a multi-blade wheel (92), the fixed frame (91) is fixed on the inner side wall of the mixing conveying pipe (2), and the multi-blade wheel (92) is rotatably connected with the fixed frame (91);
an air outlet (81) is formed in the top of the settling tank (1), a telescopic soft sleeve (82) is arranged at the position, located on the inner side of the settling tank (1), of the air outlet (81), a filter screen (83) is arranged on the end face of the telescopic soft sleeve (82), a plurality of soft springs (84) are arranged on the inner side wall of the air outlet (81), and the other ends of the soft springs (84) are fixedly connected with the filter screen (83) so that the filter screen (83) can vibrate back and forth;
the top end of the air outlet (81) is also provided with a fine filtering net (7), and the fine filtering net (7) is clamped in the air outlet (81);
the air supply device (6) comprises an air pump (62), an air storage tank (61), a first air supply pipe (41) and a second air supply pipe (42);
the first air supply pipe (41) and the second air supply pipe (42) are both communicated with the air outlet end of the air storage tank (61), and the air pump (62) is used for maintaining the air pressure in the air storage tank (61); the air outlet end of the first air supply pipe (41) is communicated with the interior of the premixing tank body (3), and the air outlet end of the second air supply pipe (42) is communicated with the first section of the mixing conveying pipe (2).
2. The pneumatic continuous explosive mixing device for expanded explosive production according to claim 1, which is characterized in that:
compounding conveyer pipe (2) include at least two sections, adjacent two sections comparatively more than or equal to 90 between compounding conveyer pipe (2), and finally connect one section of gunbarrel (1) compounding conveyer pipe (2) are vertical to be set up.
3. The pneumatic continuous explosive mixing device for expanded explosive production according to claim 1, which is characterized in that:
the gas outlet ends of the first gas supply pipe (41) and the second gas supply pipe (42) are respectively provided with an electromagnetic valve (43), and the side wall of the premixing tank body (3) is provided with an electromagnetic gas outlet valve (31).
4. The pneumatic continuous explosive mixing device for expanded explosive production according to claim 1, which is characterized in that:
and a mixed discharge outlet (11) is arranged at the bottom of the settling tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010196257.4A CN111233588B (en) | 2020-03-19 | 2020-03-19 | Pneumatic continuous explosive mixing device for production of expanded explosives |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010196257.4A CN111233588B (en) | 2020-03-19 | 2020-03-19 | Pneumatic continuous explosive mixing device for production of expanded explosives |
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| CN111233588A CN111233588A (en) | 2020-06-05 |
| CN111233588B true CN111233588B (en) | 2022-02-15 |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB800442A (en) * | 1956-07-02 | 1958-08-27 | Ici Ltd | Improvements in or relating to the manufacture of blasting explosives |
| US20070116516A1 (en) * | 2005-11-22 | 2007-05-24 | Lichtblau George J | Process and apparatus for highway marking |
| CN201825886U (en) * | 2010-08-03 | 2011-05-11 | 山东天宝化工有限公司 | Continuous expanded ammonium nitrate explosive mixing device |
| CN103204750B (en) * | 2012-09-21 | 2015-07-29 | 湖北航天化学技术研究所 | A kind of explosive slurry vacuum vibration gating system |
| CN103408388B (en) * | 2013-08-26 | 2015-12-23 | 中煤科工集团淮北爆破技术研究院有限公司 | Powdery emulsion ammonium nitrate explosive |
| CN107662992A (en) * | 2017-11-30 | 2018-02-06 | 南京灿华光电设备有限公司 | A kind of purifier for being used for kitchen waste water processing based on Internet of Things |
| CN209413987U (en) * | 2018-11-14 | 2019-09-20 | 嘉兴博瑞涡轮增压技术有限公司 | A kind of turbocharger intercooler that using effect is good |
| CN109404032B (en) * | 2018-12-11 | 2024-06-28 | 贵州大学 | Underground air supply device convenient to filter and used for coal mine mining |
| CN209684469U (en) * | 2019-03-28 | 2019-11-26 | 湖北凯龙化工集团股份有限公司 | Liquid oil phase storage tank on emulsion explosive production line |
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2020
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