Continuous filling and conveying rotary piston pump for emulsion explosives

Abstract

The invention discloses a continuous filling and conveying rotary piston pump for emulsion explosives. The continuous filling and conveying rotary piston pump comprises a rack (3), a rotation power mechanism (4) arranged in the rack, and a pump body (5) supported on the rack and connected with the rotation power mechanism. The pump body comprises an outer shell, a main shaft (12), a rotor (8) and pistons (18). The rotor is fixed to the main shaft and can rotate at a constant speed in the outer shell, cylinder holes (9) are formed in the rotor at intervals, the pistons are arranged in the cylinder holes in a sealing mode, the pistons are connected with the upper ends of piston rods (24), the piston rods penetrate through the bottoms of the cylinder holes and are movably connected with piston push rods (32), the piston push rods are connected with guide wheels (11), the guide wheels are supported on a closed-ring double-layer lifting guide rail (14B), and the closed-ring double-layer lifting guide rail enables the guide wheels to move vertically and horizontally in an alternate mode. The continuous filling and conveying rotary piston pump is compact in structure, the piston rods are high in durability, the piston push rods are convenient to disassemble, assemble and maintain, the guide wheels are reliable in work, filling can be rapidly and accurately completed, and production efficiency and filling quality are improved.

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 it has achieved It has a good effect, but there are still some problems: the first problem is that the piston and the piston rod that are randomly rotated in an annular distribution and move up and down bear a large axial load. The guide wheel is connected, 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 the production efficiency; the second problem is that the piston acts on the compression spring and the limit plate. When the cylinder bore is loaded by downward movement, the elastic capacity of the compression spring will decrease after a certain period of time. Since the piston descending process (in the descending section, a-a1 interval) is completed by the elastic force of the compression spring, it will As a result, the piston cannot make the guide wheel close to the guide rail surface (cannot fully return to the original position) when the piston moves in the descending section, thus affecting the filling and metering of the emulsion explosive

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