SU1236214A1 - Versions of device for switching liquid flow - Google Patents

Abstract

1. A device for switching fluid flow comprising an inkjet element with a nozzle, two exit channels, a jet interaction chamber with a concave deflector and rectilinear side walls, two control channels and two discharge channels connected to two vortex chambers, characterized in that in order to increase stability in operation, it additionally contains an ejector, the output of which is connected to the jet nozzle of the jet element, the working chamber to the swirl chambers, and the input to the power source. & lo / t / gam1 // - post 20-30 & - BbMff / m / TTom; if (vffmc / 7 i / & & (L to with 05 to

Description

2. The device according to claim 1, characterized in that it further comprises two float valves, the inlets of which are connected to the vortex chambers, and the outlets to the working chamber of the ejector.

3. A device for switching fluid flow containing an inkjet element with a nozzle, two output channels, a jets interaction chamber with a concave deflector and rectilinear side walls. The invention relates to the field of automatic control and can be applied in hydraulic automation systems.

The aim of the invention is to increase the stability in the operation of the device for switching the flow of liquids.

FIG. 1 and 2 shows a structural diagram of the device, the first option; in fig. 3 - the same, the second option.

The device for switching the fluid flow consists of an inkjet element with nozzle 1, output channels 2 and 3, chamber 4 of interaction of jets with a concave deflector 5, control channels 6 and 7, discharge channels 8 and 9, vortex chambers 10 and I with outlet openings 12. In the first embodiment, the device (Fig. 1 and 2) contains an ejector 13 with a working inlet 14, an outlet 15 and a working chamber 16, float valves 17 and 18 installed in the discharge channels, respectively 9 and 8. In the second variant the device (Fig. 3) contains two ejector 19 and 20 with inputs 2 and 22, working chambers 23 and 24 and outlets 25 and 26. The device is controlled by a three-way valve 27, which can be manual or automatic.

In the first version, the device operates as follows.

The fluid flow enters the working inlet 14 of the ejector 13 and from its outlet 15 into the nozzle 1, from which it flows out into the chamber 4 of the interaction. At the indicated position of the three-way valve 27, the control channel 6 is closed, and the control channel 7 communicates with atmospheric air. Therefore, when fluid flows from the nozzle 1 into the chamber 4 of the interaction, the jet sticks to the rectilinear side wall adjacent to the closed control channel 6, due to the dilution between the jet and this wall (Coanda effect) and increased pressure

between the jet and the opposite wall created by the reflection from the concave, two control channels and two discharge channels connected to two vortex chambers, characterized in that, in order to increase stability in operation, it additionally contains two ejector, whose inputs are connected to the output channels jet element, the outputs - with the outputs of the device, and

The jet of the jet element is connected to a power source.

that deflector 5 potokom.m, and enters the output channel 2.

A part of the fluid flow comes from the EE of the inlet channel 2 to the vortex chamber 10 communicating with it and through the discharge channel enters the working chamber 16 of the ejector 13. This ensures a more reliable holding of the jet against the wall in the presence of backpressure at the outlet of the device.

To switch the flow of liquid, the position of the three-way valve 27 is changed, closing the control channel 7 and, together with the atmosphere, the control channel 6.

The device (Fig. 2) works similarly.

The only difference is that some of the fluid flow from the output channel 2 is diverted into the vortex chamber 10, from which through the discharge channel 8 enters the float valve 18, its float floats, and the liquid enters the working chamber through the discharge channel 16 of the ejector 13. This ensures a more reliable retention of the jet against the wall in the presence of backpressure in the system at the outlet of the device and with fluctuations in the amount of backpressure, as well as prevents loss of fluid from the system. With the passage of fluid through the outlet channel 2, the outlet channel 3 is emptied and the discharge channel 9 is filled with air and blocked by the float of the valve 17, which makes the device more stable. To switch (change: the direction) of the fluid flow, they change the position of the three-way valve 27, closing the control channel 7 and, together with the atmosphere, control channel 6.

The principle of operation of the device according to the second variant (Fig. 3) is similar to the principle of action according to the first. The difference lies in the fact that the fluid flow enters the device directly into the nozzle I, and from the output channels 2 and 3 at the inlet 22 and 21 of the ejectors 19 and 20, from the outputs of which are then sent to the system in a given direction. With the passage of fluid through the outlet channel 2 or 3, a part of the fluid is discharged through the vortex chamber 10 or 11 through the discharge channel 8 or 9 directly into the working chambers 24 or 23 of the ejector 20 or 19. Since it is unproductive / KOC / 77L /

the output channel that is melting at the moment is connected with an idle ejector, then the latter does not create a vacuum in the discharge channel and does not draw air from the control channel connected to the atmosphere.

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Claims (3)

1. A device for switching the fluid flow comprising a jet element with a nozzle, two output channels, a camera for interacting with a concave deflector and rectilinear side walls, two control channels and two discharge channels connected to two vortex chambers, characterized in that, for the purpose of to increase stability in operation, it additionally contains an ejector, the output of which is connected to the nozzle of the jet element, the working chamber with vortex chambers, and the input with a power source. SU, 1236214 of FIG. one 2. The device according to π. 1, characterized in that it further comprises two float valves, the inlets of which are connected with the vortex chambers, and the outputs - with the working chamber of the ejector. 3. A device for switching the fluid flow comprising a jet element with a nozzle, two output channels, a camera for interacting jets with a concave deflector and rectilinear side walls, two control channels and two discharge channels connected to two vortex chambers, characterized in that, in order to increase stability in operation, it additionally contains two ejectors, the inputs of which are connected to the output channels of the inkjet element, the outputs -..... with the outputs of the device, and the nozzle of the inkjet element is connected with a power source.