SU1656157A1 - Positive-displacement diaphragm machine - Google Patents

Abstract

The invention relates to diaphragm pumps and compressors and allows increasing the service life and pumping rate or injection pressure. On the rod 7, working and additional membranes 6 and 10 are formed, forming with the housing 1 and between themselves working, intermembrane and buffer cavities 4, 11 14 and 5, interconnected, with cavities 2 and 3 suction and injection, with external sources pressures with atmosphere in various combinations through the throttles 17 pneumatic lines 16 Creating certain cavities in the cavities 5.11 - 14 by adjusting or adjusting the chokes 17, as well as selecting and arranging external pressure sources allows or reduces the pressure drop on the working membrane 6 and dopo imbalated membranes 10, the total differential across all membranes is triggered, thereby increasing the life of the diaphragms, or working at an allowable differential pressure on each diaphragm to increase the discharge pressure when operating in compressor mode or pumping degree when operating in pump mode. 3 hp f-ly, 6 ill.

Description

The concept relates to compressor and pump engineering and can be used in diaphragm compressors and medical equipment pumps.

The purpose of the invention is to increase the lifetime of the membranes and increase the degree of compression when the machine is running in the compressor mode and the pumping rate in the pump mode,

FIG. 1 shows a diagram of a diaphragm pump with a pressure source, general view; Figures 2-4 show diaphragm pump diagrams; suction, injection, intermembrane cavities and the atmosphere are used as sources of pressure in various combinations; 5 through 6 are the same for membrane compressors.

The diaphragm volumetric machine comprises a housing 1 with cavities 2 and 3 suction and injection and clamped in

housing 1 with the formation of the working and buffer cavities 4 and 5, the membrane 6 with a rigid center fixed on the rod 7 Buffer cavity 5 is connected to a source 8 of pressure by pneumo line 9. On the rod 7 there are also attached additional membranes Hus forming intermembrane cavities 11-14 connected with additional sources of pressure 15 pnevmolini 16 with throttles 17.

As additional sources of pressure 15, an injection cavity 3, a suction cavity 2, a buffer cavity 5, intermembrane cavities 11-14, the atmosphere can be used. The buffer cavities 5 can be equipped with valves 18, depending on the installation of which (suction or injection with respect to the buffer cavity 5) membrane machine

ABOUT

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works in the mode of the compressor or pump. The rod 7 is connected to the actuator 19. As an external pressure source 8, 15, a vacuum pump, a compressor, cylinders with an independent working medium, suction or discharge cavities of other stages of the same membrane machine can be used if it is multi-stage. As internal pressure sources, the reserves of the machine itself are used.

Membrane volumetric machine operates as follows.

The operation of the actuator 19 provides for the reciprocating movement of the rod 7 with the membranes 6 and 10 attached to it. This changes as; the volume of the working cavity 4 and the buffer cavity 5. Transfer takes place, the medium is compressed through the suction cavity 2 into the pressure 3. The required pressure value is selected in the intermembrane cavities 11-14 by selecting sources 8 and 15 of pressure and throttles 17. The required value of the pressure in the cavity 11-14 is determined from the condition that the pressure drop on the membranes 6 and 10 decreases, for example, when the machine is running (Fig. 1) in vacuum mode with a suction pressure of 0.05 this and a discharge pressure of 0.1 atom. . Considering that the pressure in the buffer cavity 5 is approximately 1 atm, when creating a pressure in cavity 11 at 0.1 atm, the differential across the working membrane b will be only 0-0.05 atm. Or, when the machine is running (fig.b) in the compressor mode with an allowable pressure drop on each membrane b, 10, equal to 5 atm, the discharge pressure can be 26 atm.

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Thus, the creation of certain pressures in the cavities 5, 11–14 makes it possible to increase the resource of the membranes, the degree of pumping out and the pressure of the injection, by working it in parts.

Claims (2)

Invention Formula 1. A membrane volumetric machine, comprising a housing with suction and pressure cavities and clamped in 10 housing with the formation of the working and buffer cavities of the membrane with a rigid center fixed on the rod, while the buffer cavity is connected to a pressure source of pneumatic lines, characterized in that 15 in order to increase the membrane service life and increase the compression ratio when the machine is operating — in compressor mode and pumping degree in pump mode — it is equipped with additional pressure sources and pneumatic lines with throttles and at least one additional membrane fixed on the rod with the formation of intermembrane cavities connected to additional sources of pressure 25 pneumolini mi. 2. The machine is pop. 1. which differs from the fact that the injection cavity and / or the suction cavity are used as additional pressure sources. 303. Machine as claimed in Claims 1 and 2, of which there is a buffer cavity used as an additional pressure source. 4. Machine PP.1 -3. are distinguished, a- 35, by using inter-membrane cavities as additional pressure sources nineteen eleven four fig i