SU791986A1 - Solution pump - Google Patents

Description

The invention relates to displacement machines, more specifically to pumps for pumping mortars.

A mortar pump is known, which includes 5 working chambers, a pumping unit, a discharge pipeline with a receiver, an air duct and a diffractive compressor, in which the drive cavity communicates with the working chamber, and the working cavity 10 with the cavity of the receiver 1.

The disadvantage of this mortar pump is low productivity, due to the fact that part of the useful volume of the pumped medium is spent 15 on the operation of the compressor.

Closest to the invention to the technical essence and the achieved result is a mortar pump containing a mixing and working chamber, 2c pumping unit with a plunger and crank mechanism, a discharge pipe, a compensator for the supply of compressed

air into the mixing chamber and the f2 air duct}.

The disadvantage of this pacraqpouaco is its energy consumption, due to the constant supply of compressed air into the mixing chamber with a pulsating flow of solution into it.

The aim of the invention is to reduce energy consumption.

This goal is achieved by the fact that the crank mechanism is equipped with a cam mounted coaxially with the crank mechanism, and the air line is built into it by a shut-off valve that interacts with the cam.

Claims (2)

This embodiment of the mortar pump provides a portion of the compressed air into the cavity of the mixing chamber at the time of suction of the solution into the working chamber, which reduces the consumption of compressed air and, consequently, the energy intensity of the compressor and the entire mortar pump as a whole. FIG. 1 shows the described races of a man-pump, a general view, in FIG. 2 - an on-off valve and a cam interacting with it; m 9, cam 10, fitted with a crank crank crank mechanism 3, compressor 11, connected to the shut-off valve 8 air duct 12. Mortar pump works as follows. When the plunger 2 moves to inject the solution into the working chamber 4, the valve 8, because the cam 1O does not interact with it through the cutting unit 9, is in the closed position, shutting off the compressed air supply from the compressor 11 to the mixing cavity; chambers 5. During the reverse movement of the plunger 2 (on the suction of the solution), the cam 10 rotates about its axis locally with the crank of the crank-and-conrod mechanism 3, acting on the rod 9 of the shut-off valve 8, driving it to the open position. At the same time, compressed air from the compressor 11 enters the cavity of the emissive chamber 5, mixing with the solution and displacing it into the discharge pipe 6. Next, the cycle of the pump operation is repeated. Due to the portioned supply of compressed air into the cavity of the mixing chamber with the alternation of a portioned mode, the supply of the solution reduces the consumption of compressed air and, thus, the energy intensity of the solution pump. The invention comprises a mixing pump, a mixing chamber and a working chamber, a pump assembly with a plunger and a crank mechanism, a discharge pipe, and a compressed air compressor into the mixing chamber, and an air line, characterized by the fact that the crank mechanism is equipped with a cam coaxially with the crank, and the air line is built into it by a shut-off valve that interacts with the cam. Sources of information taken into account during the examination 1. USSR author's certificate No. 628331, cl. F 04 B 15 / O2, 1977. 2. Borisov GV. Production of waterproofing works. L., SI, 1978, p. 90-93. tU9,1 eight FIG. I