RU2319041C1 - Working medium delivery pumping system - Google Patents

Abstract

FIELD: mechanical engineering.

SUBSTANCE: device is designed for use in technological equipment of pumping plants for accurate metered out delivery of two and more components of working medium under high and low pressure into actuating member. Proposed pumping system includes pressure and drain main lines furnished with control devices, working medium source and actuating member. It contains two meters, each being made of two hemispheres interconnected by flange joint with elastic nonpenetrable diaphragm clamped in between. Intake-outlet hole is made in one of hemispheres to communicate hemisphere by channels of pressure main line through working agent flow divider and through electromagnetic valve with working agent source, and by channels of drain main line through electromagnetic valve with working agent source. Intake hole is made in other hemisphere through which hemisphere communicates by channels of pressure main line through shutoff valve with one of two sources of working medium components, and drain hole through which hemisphere communicates by channels of drain main line through shutoff valve with actuating member.

EFFECT: simplified design without reduction of quality and quantity characteristics of mixture, improved reliability of system in operation, prevention of losses of expensive components at production of mixture.

2 dwg

Description

The invention relates to pumping units of technological equipment and can be used for accurate metered supply of two or more components of the working fluid (medium, liquid, mixtures of liquids, etc.) under high and low pressure in the actuator - mixer in various industries.

A known pump system for supplying a working fluid, containing two pressure multipliers, each of which has a piston and hydraulic cavities of variable volume, communicated through the distributors of the working fluid, pressure and drain lines, equipped with pressure accumulators and control equipment, with an actuator and a source of working fluid and a drive, providing activation of multipliers (patent No. 2211368, IPC F15B 3/00).

A disadvantage of the known system is the lack of the ability to work with components in a wide range of pressure and performance, the lack of the ability to supply components of the working fluid with an accurate dosage to the actuator, the complexity of the design due to the presence of additional mechanical devices that ensure the operation of spool and piston mechanisms, which requires control and regulatory equipment and which, in turn, complicates the process of technical and operational maintenance.

The objective of this invention is the creation of a pumping system for supplying a two-component working fluid of a polyurethane foam of a simplified design without reducing the qualitative and quantitative characteristics of the mixture with the achievement of such technical results as the ability to work with components in a wide range of pressure and performance, increasing the accuracy of the dosage of the components of the working fluid, improving the reliability of the system in operation, eliminating the loss of expensive components in the manufacture of mixtures si.

This goal is achieved by the fact that the pumping system for supplying a two-component working fluid of polyurethane foam, including pressure and drain lines, equipped with control equipment, a working fluid source, an actuator, contains two dispensers, each of which is made in the form of two hemispheres interconnected by a flange connection with an elastic, elastic, impermeable membrane sandwiched between them in a circle, while in one of the hemispheres an inlet - cast hole is made through which the hemisphere is connected It is connected with the channels of the pressure line through the flow divider of the working agent and through the solenoid valve with the source of the working agent and the channels of the drain line through the solenoid valve with the source of the working agent, and an inlet is made in the other hemisphere, through which the hemisphere is connected with the channels of the pressure line through the shut-off valve with one of the two sources of components of the working fluid and a drain hole through which the hemisphere is communicated by the channels of the drain line through a shut-off valve with an executive nom.

Further, the invention is illustrated by drawings, where in Fig.1 shows a pumping system for supplying a two-component working fluid, in Fig.2 - dispenser.

The pump system for supplying a two-component working fluid contains two dispensers A and B, each of which is made (Fig. 2) in the form of two hemispheres (1) and (2), interconnected by a flange connection (3), with the elastic clamped between them , an elastic, impermeable membrane (4), while in the hemisphere (1) there is an inlet - cast hole (5), and in the hemisphere (2) an inlet hole (6) and a drain hole (7) are made.

The hemisphere (1) of dispenser A through the inlet - outlet is communicated (Fig. 1) through the channels of the pressure line (8) through the flow divider of the working agent (9) and through the electromagnetic valve (10) with the source of the working agent (11) and channels of the drain line ( 12) through the electromagnetic valve (13) with the source of the working agent (11), and the hemisphere (2) through the inlet is communicated by the channels of the pressure line (14) through the shut-off valve (15) with the source of the component I of the working fluid (16), and through the drain the hole is communicated by the channels of the drain line (17) through the shutoff second valve (18) to the actuating body (19).

The hemisphere (1) of dispenser B is connected through the inlet and outlet through the channels of the pressure line (20) through the flow divider of the working agent (9) and through the electromagnetic valve (10) with the source of the working agent (11) and channels of the drain line (12) through the electromagnetic valve (13) with the source of the working agent (11), the hemisphere (2) through the inlet is communicated by the channels of the pressure line (21) through the shut-off valve (22) with the source of component II of the working fluid (23), and through the drain hole is communicated by the channels of the drain line ( 24) through the shutoff valve en (25) with the executive body (19).

The operation of the pumping system for supplying a two-component working fluid is as follows.

The working agent from the source (11) under pressure through the electromagnetic valve (10), the flow divider of the working agent (9) through the channels of the pressure line (8) fills the hemisphere (1) of dispenser A and similarly to the hemisphere (1) of dispenser B.

The working fluid from the source of component I (16) through the shut-off valve (15) through the channels of the pressure line (14) comes under pressure through the inlet into the hemisphere (2) of dispenser A.

At the same time, the working fluid from the source of component II (23) through the shut-off valve (22) through the channels of the pressure line (21) comes under pressure through the inlet into the hemisphere (2) of the dispenser B.

The working agent from the source (11) under the pressure created by the pump through the electromagnetic valve (10) and the working agent divider (9), which provides the division of the working agent into two flows of equal volume, along the channels of the pressure line (8) and (20) through inlet - the casting hole enters the hemisphere (1) of dispensers A and B and deforms the elastic membranes, as a result of which the predetermined dose of component I of the working fluid is pushed out of the hemisphere (2) of dispenser A through the drain hole and the drain line (17) through the shut-off valve (18 ) and comes under d by applying to the actuator (19), at the same time, the specified dose of component II of the working fluid is pushed out of the cavity of the hemisphere (2) of the dispenser B through the drain hole and the drain line (24) through the shut-off valve (25) and flows under pressure into the actuator (19).

In the executive body (19), the dosage components I and II are mixed. After which the finished two-component mixture goes to the next process step.

The pump system begins the next cycle of supplying the components of the working fluid of polyurethane foam to the actuator (19).

In the case of supplying a multi-component working fluid, the pumping system contains a number of dispensers corresponding to the number of components.

The flow divider has as many outlet openings as there are dispensers in the pump system.

The volume of the component is regulated both by the volume of the dispenser itself and by the volume of the working agent.

The use of a pumping system for supplying a two-component working fluid of polyurethane foam according to the proposed technical solution will allow

- vary the pressure of the working fluid (finished polyurethane mixture) in the range from 12 to 300 bar;

- change the yield of the mixture from 2 to 200 kg / min;

- 1.75 times lower energy consumption per unit output compared to devices with similar performance;

- virtually eliminate the loss of components during operation of the device;

- reduce the weight of the device compared to devices having a similar performance in 2 times.

Claims (1)

A pumping system for supplying a working fluid, including pressure and drain lines, equipped with control equipment, a source of working fluid, an actuator, characterized in that it contains two dispensers, each of which is made in the form of two hemispheres interconnected by a flange connection, clamped between them in a circle with an elastic elastic impenetrable membrane, while in one of the hemispheres an inlet - cast hole is made through which it is communicated by channels of the pressure line through the flow divider gent and through an electromagnetic valve with a source of a working agent and channels of the drain line through an electromagnetic valve with a source of a working agent, and an inlet is made in the other hemisphere, through which it is connected by channels of a pressure line through a shut-off valve with one of two sources of the working fluid, and a drain hole through which it is communicated by the channels of the drain line through a shut-off valve with the executive body.

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