SU1513238A1 - Jet pump - Google Patents

Abstract

The invention relates to inkjet technology and can be used when pumping various liquids. The purpose of the invention is to increase the efficiency when changing operating conditions and expanding the field of application by allowing the pumping of easily damaged products. The jet pump comprises a housing 1, a mixing chamber (CS) 2 with a diffuser 3, a suction 4 and a pressure 5 nozzles, a hollow chamber of variable geometry (PKHP) 6, made of an elastic material, located inside the CS 2 and equipped with a side nozzle, by means of which PKHG 6 communicates with a source of high-pressure control medium 8, which is made in the form of a casing 9 covering COP 2, a hollow cylinder (C) 10 and a bellows 11 placed inside C 10. The cavity of the casing 9 communicates with the bellows cavity 11 and through the side PC cavity socket G 6, and the hollow C 10 is provided with a screw 12 for displacing the bellows 11. The pump is controlled by changing the bore and shape of the PLG 6 located in CS 2. The size changes when the pressure inside the PKG 6 cavity changes when the screw 12 moves and the volume changes limited by bellows 11. The presence of elastic walls of PKIG 6 permits pumping of easily-damaged products. 3 hp f-ly, 2 ill.

Description

fig

31513238

Neither (KS) 2 with a diffuser 3, suction 4 and pressure 5 nozzles, hollow chamber of variable geometry (PKTP) 6, made of elastic material, located inside CS 2 and equipped with a side nozzle, through which NPPE 6 communicates with the source 8 of high pressure spraying medium, which is made in the form of a casing 9, ox-fg of the injected KC 2, a hollow cylinder (c) 10 and a bellows 11 placed inside the C 10. The cavity of the casing 9 communicates with the bellows cavity 11 and

fS

by means of a side pipe with a ZKIG cavity 6, and a hollow C 10 is equipped with a screw 12 for displacing the bellows 11. The pump is regulated by changing the flow area and shape of the SCR 6 placed in CS 2. The size changes when the pressure changes inside the PKG 6 cavity when the screw moves 12 and the change in the volume limited by the bellows 11. The presence of elastic walls of the SCR 6 allows pumping easily-damaging product. 3 hp ff, 2 Sh1 "

The invention relates to a jet and can be used when pumping various liquids.

The purpose of the invention is to increase the efficiency when changing operating conditions and expanding the field of application by allowing the pumping of easily damaged products.

Figure 1 shows a jet pump, a longitudinal section; FIG. 2 shows the floor of a chamber of variable geometry;

 -

 - The jet pump comprises a housing 1,

mixing chamber 2 with diffuser 3, suction and discharge nozzles 4 and 5, hollow chamber 6 of variable geometry, made of elastic material, located inside the mixing chamber 2 and equipped with a side nozzle 7, through which the chamber 6 is connected to the floor 8 of the high pressure control medium, which is made in the form of a casing 9, covering the mixing chamber 2, a hollow cylinder, a core 10 and a bellows 11 placed inside the cylinder 10, the casing cavity 9 communicating with the bellows cavity 11 and through a side nozzle 7 with a cavity chamber 6 th variable-geometry and poly cylinder 10 is provided with a screw 12, movement of the bellows housing 11. The cavities 9, the bellows 11 and the chamber 6 variable-geometry may be filled with a liquid medium. The thicknesses — on the walls of the chamber 6 of variable geometry — are made variable, shrinking in the direction from the diffuser 3 to the suction nozzle 4. The jet pump can be equipped with a sealing hollow conical element 13 mounted in the side nozzle 7.

Jet pump works as follows

The active medium enters the pump through the pressure pipe 5 and, when it moves, sucks the pumped medium into the mixing chamber 2 through the suction pipe 4. After mixing, the mixture decelerates in the diffuser 3 with a decrease in static pressure. The adjustment of the shape and size of the flow area of the mixing chamber 2 occurs during movement, with the screw 12 of the bellows 11, as a result of which a pressure change occurs in the bellows 11, the casing 9 and the chamber 6 of the variable geometry, which is deformed under the action of this pressure. The presence of this mechanism allows to increase the efficiency when changing the conditions of operation, and the performance of the chamber 6, in which the medium is displaced from an elastic material, makes it possible to pump a highly damaged product.

Claims (4)

1. A jet pump comprising a housing, an offset chamber with a diffuser, a suction and discharge nozzle, a hollow chamber of variable geometry, made of elastic material, located inside the mixing chamber and provided with a side nozzle, through which the chamber is connected to a high pressure control medium , distinguished by the fact that, in order to increase the efficiency when changing operating conditions and expand the scope of application by providing the possibility of Reciprocating the easily-damaging pro- duct, the source of control medium is made in the form of a casing covering the mixing chamber, a hollow cylinder and a bellows placed inside the cylinder, the casing cavity communicating with the bellows cavity and through a side branch pipe with a cavity of a variable geometry, and a hollow cylinder provided with a bellows movement screw. 2, a pump according to claim 1, characterized in that the cavities of the casing. 32386 the bellows and the variable geometry chamber are filled with a liquid medium, 3. Pump POP-1, characterized in that the thickness of the chamber walls of the variable geometry is solar-variable, decreasing in the direction from the diffuser to the suction nozzle. 4. A POP.1 pump, characterized in that it is provided with a sealing hollow conical element installed in the lateral port.