SU1581871A1 - Jet pump - Google Patents

Abstract

The invention relates to the field of inkjet technology, mainly to jet pumps for pumping various media. The aim of the invention is to increase the reliability of operation by simplifying the design of the pump. The jet pump comprises a housing 1, a mixing chamber (CS) 2, a diffuser 3, an active nozzle (AC) 4 with a sleeve (B) 5 spring-loaded with respect to the housing 1, and an overflow channel (K) 6, the inlet of which is connected to the nozzle 7 for supplying the active medium, and the output - to the receiving chamber (PC) 8. In 5 is spring-loaded from the PC 8 and is located with the possibility of blocking the entrance to K 6 in the initial position, while the adjustable throttle 9 is installed in the latter. The working medium, having flowed out of AC 4, creates a discharge in PC 8 and carries in the COP 2 passive environment. At the same time, due to the pressure difference in the AU and PC 8, the AC with B 5 moves towards PC 8 and opens the entrance to K 6 of the active medium, which in K 6 enters PC 8. At the same time, the pressure in PC 8 increases and by reducing the differential The pressure on the AC last returns to its original position, and B 5 overlaps K 6 again, which leads to an increase in the pressure drop over the AC, and the cycle of operation repeats. By changing the flow area of the adjustable throttle 9, the pump operation mode is changed. Thus, by making the AC with B 5 spring-loaded from the PC 8, a simplified design of the jet pump is achieved, and, consequently, the reliability of its operation is increased. 1 il.

Description

returns to its original position, s B 5 overlaps K 6 again, which leads to an increase in pressure drop across the AC, and the cycle of operation repeats. By changing the flow area of the adjustable throttle 9, the pump operation mode is changed. Thus, by making the AC with B 5 spring-loaded from the PC 8, a simplified design of the jet pump is achieved, and therefore the reliability of its operation is increased. 1 il.

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The invention relates to a jet technology, mainly to jet pumps for pumping various media.

The purpose of the invention is to increase the reliability of work by simplifying the pump design.

The drawing shows a jet pump, a longitudinal section.

The jet pump includes a housing 1, a mixing chamber 2, a diffuser 3, an active nozzle 4 with a sleeve 5 spring-loaded relative to the housing 1, and an overflow channel 6, the inlet of which is connected to the nozzle 7 for supplying the active medium, and the output to the receiving chamber 8. The sleeve 5 is spring-loaded side of the receiving chamber 8 and is located with the possibility of blocking the entrance of the channel 6 in the initial position, while in the latter an adjustable choke 9 is installed.

The working medium under pressure enters the nozzle 4. When the working medium jets out of the nozzle 4, its potential energy is converted into kinetic. A vacuum is created in the receiving chamber I. As a result, the passive medium enters the receiving chamber 8 and, having mixed with the working floor-40 in the mixing chamber 2, enters the diffuser 3.

Due to the pressure drop in the receiving chamber 8 and the active nozzle 4, the latter moves toward the diffuser 3 relative to the pump casing 1 towards the diffuser 3, compressing the spring and opening the working medium to enter the overflow channel 6. Part of the working medium flow enters the receiving chamber 8, Mine nozzle 4.When

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Thereby, the pressure in the receiving chamber 8 increases, and due to the change in pressure differential of the working medium and elastic forces of the spring, the active nozzle 4 returns to its original position, closing the inlet of the channel 6 with the sleeve 5, and the amount of working medium supplied to the nozzle 4 increases. In the subsequent movements, the sleeves 5 with the active nozzle 4 are repeated, thereby providing a pulsating supply of working medium.

By changing the flow area of the adjustable throttle 9, the mode of pulsating supply of the active medium from the nozzle 4 is changed.

Thus, by making the active nozzle with a bushing spring-loaded from the side of the receiving chamber, a simplified design of the jet pump is achieved, and consequently, the reliability of its operation is increased.

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Claims (1)

35 claims Jet pump, comprising a mixing chamber housing, a dibfuser, an active nozzle with a sleeve spring-loaded relative to the housing, and an overflow channel, the inlet of which is connected to the nozzle supplying the active medium, and the output to the receiving chamber, characterized in that pump design, the sleeve is spring-loaded from the side of the receiving chamber and is located with the possibility of blocking the channel inlet in the initial position, with the adjustable throttle installed in the latter.