Device for accurately metering ammonium nitrate dissolving process

Abstract

The invention discloses a device for accurately metering ammonium nitrate dissolving process. The device comprises an inner barrel, an outer barrel, a water inlet pipe, a puffing tank material sucking pipe, an ammonium nitrate feed screw, a blender and a pressure transmitter, wherein the inner barrel is arranged in the outer barrel, the inner barrel and the outer barrel are connected by virtue of an elastic member, the water inlet pipe and the puffing tank suction material sucking pipe are connected to the inner barrel respectively, ammonium nitrate is fed into the inner barrel by virtue of the ammonium nitrate feed screw, the stirrer can be used for stirring ammonium nitrate in the inner barrel and the pressure transmitter is fixed vertically to the outer wall of the outer barrel. The weighing of the pressure transmitter is more accurate since the disturbances to the weighting due to the vibration of the inner barrel are eliminated by the elastic member arranged between the inner barrel and the outer barrel. The device disclosed by the invention has the advantage that the metering can be accurate.

Description

technical field [0001] The invention relates to an auxiliary device in the production process of expanded ammonium nitrate explosives, in particular to an accurate metering device in the ammonium nitrate melting process. Background technique [0002] Expanded ammonium nitrate explosive is an industrial mixed explosive made of ammonium nitrate aqueous solution dried and crystallized under negative pressure, supplemented with diesel oil, chaff, etc. Ammonium puffed---mixed puffed ammonium nitrate with diesel oil and chaff---packing, [0003] In the ammonium nitrate solution preparation and puffing process, inhalation of the ammonium nitrate solution has inaccurate metering. [0004] 1. When ammonium nitrate is added, the total amount to be input is divided by the net weight of each bag. When adding ammonium nitrate, the number of bags is controlled. Counting is cumbersome, and often makes mistakes, and the amount added is inaccurate; [0005] 2. Water is measured by metering...

AI Technical Summary

Problems solved by technology

[0003] There is inaccurate metering in the ammonium nitrate solution inhaled during the preparation and expansion of the ammonium nitrate solution

[0004] 1. When ammonium nitrate is added, the total amount to be input is divided by the net weight of each bag. When adding ammonium nitrate, the number of bags is controlled. Counting is cumbersome, and often makes mistakes, and the amount added is inaccurate;

[0005] 2. Water is measured by metering volume, and the valve is closed when the water surface reaches the scale line. Due to the influence of water temperature and the difference between employees judging whether the water level reaches the scale line, the measurement is not accurate;

[0006] 3. Since ammonium nitrate is melted in a centralized manner, the operation method of inhaling and puffing in batches is adopted. When the ammonium nitrate solution is added during puffing, it is automatically inhaled by the negative pressure of the expansion tank, and the suction time is controlled to control the suction volume of the ammonium nitrate solution. Inconsistent sub-negative pressure, the inhalation amount of ammonium nitrate solution varies greatly each time, the inhalation amount is large, the volume of the expansion tank is fixed, the expansion effect is not good, and finally affects the explosive performance of the explosive, and the small inhalation amount affects the production efficiency

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