SU1180553A1 - Piston pump for transferring abrasive liquids - Google Patents

Abstract

PISTON PUMP FOR TRANSFERING ABRASIVE LIQUIDS, containing a cylinder sleeve installed in the housing, a piston with a rod, placed in it to form a working chamber and an annular flushing cavity located between the sealing elements of the piston and connected to the channel with a supercharger of variable performance liquid made in the form of cylinders with pistons located in them with pistons located in them with the formation of variable volume chambers communicated with the source of flushing fluid; due to the fact that, in order to increase reliability, it is equipped with a guide sleeve mounted on the housing, on the inner surface of which there are grooves of variable depth arranged at an angle to the forming surface and fixed on the rod with the possibility of interaction between a movable ring yoke and a ratchet mechanism, cylinders The flushing fluid supercharger is made in the form of radial holes on the annular cage, and its parts are spring-loaded and installed with the possibility of interaction with the grooves of the guide sleeve.

Description

The invention relates to pump engineering, in particular to pumps for pumping abrasive fluids.

A piston pump is known, comprising a housing with a working cylinder, a piston with a rod, on which a device for rotating the piston around its axis during its translational motion is located, comprising a ratchet mechanism and a pin that is operable with a screw groove formed on the inner surface of the housing 1 .

The absence of abrasive washing of the pump piston sealing elements reduces its reliability due to intensive wear of the seals.

A piston pump for pumping abrasive fluids is known, comprising a cylinder mounted in a housing, a piston with a rod placed in a cylinder to form a working chamber and an annular flushing cavity located between the sealing elements of the piston and communicated with a pumping fluid supercharger of variable performance made in the form of connected with a cylinder rod with pistons located in them with the formation of variable volume chambers 2 communicated with the source of flushing fluid.

Due to the local wear and tear of friction pairs, the reliability of the considered pump decreases.

The purpose of the invention is to increase the reliability of the pump.

The goal is achieved by the fact that a piston pump for pumping abrasive fluids contains a cylinder sleeve mounted in the housing, a piston with a rod disposed therein to form a working chamber and an annular flushing cavity located between the sealing elements of the piston and the variable flow rate supercharger made in the form of cylinder-related cylinders with pistons located in them with the formation of fluid communicated with the source and chambers of variable volume, provided with a guide sleeve mounted on the housing, on the inner surface of which there are grooves of variable depth arranged at an angle to the forming surface and fixed on the rod with the possibility of interaction between the movable ring cage and the ratchet mechanism; the holes on the ring cage, and its pistons are spring-loaded and mounted so as to interact with the grooves of the guide sleeve.

FIG. 1 shows a piston pump.

for pumping abrasive fluids,

lengthwise cut; in fig. 2 - view A on

FIG. one; in fig. 3 - section BB on

FIG. I.

The piston pump comprises a housing 1 in which a cylinder sleeve 2 is installed. A piston 3 is mounted in the cylinder sleeve 2 with a piston rod 4 connected with a reciprocating drive. The pump is provided with an annular flushing cavity 5 formed by the surface of the cylinder sleeve 2 and the piston sealing elements 6.

 The annular flushing cavity 5 through channel 7 communicates with a supercharger of washing liquid, consisting of spring-loaded pistons 8, placed in the radial holes 9 of the movably mounted 0 on the stem 4 of the annular cage 10.

Parts of the ratchet mechanism 11 are fixed on the rod and ring cage. On the housing 1 there is a guide sleeve 12, on the inner surface of which there are paired grooves 13 of variable depth inclined at an angle c to the axis of the rod.

The supercharger of the washing liquid is connected by a channel with the source 14 of the washing liquid.

When the pump performs the pumping stroke, the pistons 8 move along the grooves 13 of a variable depth of the guide sleeve 12, turning the movable ring holder 10 around the axis of the brush. At the same time, the rocks 8 displace the washing liquid through the channel 7 into the annular washing cavity 5, ensuring the washing of the sealing elements 6.

When the pump performs the suction stroke 8, the action of the springs moves along the grooves 13 to the initial position, turning the piston 3 with the rod 4 around its axis through the ratchet mechanism 11.

The change in the supply of flushing fluid is provided by shifting the direction of the sleeve 12 on the housing 1 with the placement of the pistons 8 in the grooves with different depth and angles of inclination.

Performing a piston pump for pumping abrasive fluids using the considered technical solution in the present invention improves reliability by reducing the overall and local wear of the sealing elements and friction pairs.

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Claims (1)

PISTON PUMP FOR PUMPING ABRASIVE LIQUIDS, containing a cylinder sleeve installed in the housing, a piston with a rod placed in it with the formation of a working chamber and an annular washing cavity located between the piston sealing elements and communicated with a variable capacity flushing fluid pump in the form of coupled with a cylinder rod with pistons located in them with the formation of chambers of variable volume in communication with the source of flushing fluid, different t in order to increase reliability, it is equipped with a guide sleeve mounted on the housing, on the inner surface of which grooves of variable depth are made, located at an angle to the forming surface, and mounted on the rod with the possibility of interaction of a movable ring holder and ratchet mechanism, rinsing supercharger cylinders the fluid is made in the form of radial holes on the annular cage, and its pistons are spring-loaded and installed with the possibility of interaction with the grooves of the guide sleeve.