Rotary piston pump for continuously filling and conveying emulsion explosives

Abstract

The invention discloses a rotary piston pump for continuously filling and conveying emulsion explosives, which comprises a rack (3), a rotary power mechanism (4) arranged in the rack and a pump body (5) supported on the rack and connected with the rotary power mechanism, wherein the pump body comprises an outer shell, a main shaft (12), a rotor (8) and a piston (18); the rotor is fixedly arranged on the main shaft and can rotate in a stator at a uniform speed; cylinder holes (9) are formed in the rotor at intervals; the piston is hermetically arranged in the cylinder holes; the piston is connected with the upper end of a piston rod (24); the piston rod penetrates through the bottom of each cylinder hole and is movably connected with a piston push rod (32); the piston push rod is connected with a guide wheel (11); the guide wheel is supported on a closed-loop double-layer lifting guide rail (14B); and the closed-loop double-layer lifting guide rail can enable the guide wheel to do lifting motion and translation motion alternately. According to the invention, the structure is compact, the piston rod is strong in durability, the piston push rod is convenient to disassemble, assemble and maintain, the guide wheel is reliable in working, quick and accurate charging can be realized, and the production efficiency and filling quality are increased.

Description

technical field [0001] The invention relates to an emulsion explosive production equipment, in particular to a medium- and low-temperature emulsion explosive small-diameter, large-flow continuous quantitative loading and conveying equipment. Background technique [0002] The emulsion explosive matrix is ​​highly dispersed oxidant aqueous solution in the combustible oil phase material in the form of emulsification process, and the emulsion explosive is formed after adding a sensitizer to it. At present: the equipment used for the filling and transportation of emulsion explosives includes single screw pump, twin screw pump, elliptical screw pump, gear pump, vane pump, etc. The feeding, conveying and discharging of emulsion explosives all rely on the rotation of mechanical threads and blades The thrust of shearing and stirring achieves the purpose of feeding, conveying and discharging. Due to the characteristics of high viscosity and poor fluidity of emulsion explosives at med...

AI Technical Summary

Problems solved by technology

The above structure will greatly damage the performance of emulsion explosives during the process of feeding, conveying and discharging medium and low-temperature small-diameter emulsion explosives. Loading and conveying bring great difficulties; for this reason, it can only reduce the degree of performance damage at the cost of reducing speed, production capacity and efficiency

Emulsion explosives are in a high-temperature state above 90°C. Although the fluidity is significantly improved, the delivery temperature of the emulsion explosive matrix is ​​around 110°C. Its production efficiency is a problem, but it also brings problems that the high-temperature wrapped emulsion explosive rolls are not easy to cool, and the cooling facilities require a large investment and occupy a large area.

In order to solve the problem that the emulsion explosive filling and conveying equipment can not realize the continuous quantitative filling and conveying of medium and low temperature emulsion explosive with small diameter and large flow rate, (people) invented a continuous filling and conveying piston pump. After using this piston pump, Although good results have been achieved, there are still some problems: the first problem is that the circularly distributed random rotation and up and down movement of the piston and piston rod bear a large axial load. After a certain period of work, due to the long piston rod and the lower end Directly connected with the guide wheel, the piston rod is prone to axial bending deformation, or even damage, and the disassembly and maintenance of the piston rod is quite troublesome, which not only increases the maintenance cost and cost, but also reduces production efficiency; When the cylinder hole is loaded by moving downward under the action of the position plate, the elastic capacity of the compression spring will decrease after a certain period of time. Since the piston descending process is completed by the elastic force of the compression spring, it will cause the piston to move in the descending section. Cannot make the guide wheel close to the surface of the guide rail (cannot fully return to the original position), thus affecting the filling and metering of the emulsion explosive

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