SU1366734A1 - Device for making pulsations in liquid pressure - Google Patents

Abstract

The invention relates to a testing technique and is intended to generate vibrations in vibrating tables, pitching simulators and pump driving. The chain of invention is an extension of the functionality of the device.

Description

one

The invention relates to a test technique, is intended to generate vibrations in shakers, pitching simulators and drive pumps and can be used as a washing device in production lines.

The purpose of the invention is to expand the functionality.

FIG. 1 shows the proposed device; in fig. 2 - the same as detergent.

The device contains a spool valve 1 with shut-off elements (not shown) installed in the housing 2 with the formation of control 3 and drain 4 cavities, vortex chambers 5, inlet pipes 6 are connected to pressure SOURCE 7, output pipes 8 are with expendable capacities 9 and 10, and the suction inlets 11 are with the control cavities 3. The locking elements are connected by a rod 12 passing through the channel 13, which is connected with the atmosphere. The supply tanks 9 and 10 communicate with each other through an adjustable choke 14. The locking elements are made in the form of discs 15 and 16 with valves 17 and 18 and labyrinth seals 19 and 20. The drain cavities 4 are in communication with additional containers 21 and 22.

When using the washer, it is additionally equipped with nozzles 23 and 24, connected through check valves 25 and 26 with supply tanks 9 and 10, respectively. A fluid collector 27 is installed under the nozzles 23 and 24, between which the cleaned part 28 is installed. The collector communicates with the supply containers 9 and 10 through adjustable |) 1st valve 29 and check valves 30 and 31.

The device (Fig. 1) operates as follows;

Compress the gas (steam) from source 7 enters the inlet nozzles 6 of the vortex chambers 5. When the shutter 17 is closed and the shutter 18 is open, due to the vortex nature of the medium movement, a vacuum occurs in the suction tube, the cockpit 8 and the reservoir 10. Pressure in the flow The tank 9 and the tank 21 increase, with the pressure in the latter being higher, since the additional tank 21 is connected to the periphery by the vortex chamber 5, and the tank 9 is connected to the outlet pipe 8 located on the axis. The pressure in the additional tank 22 5 is equal to atmospheric pressure.

In the absence of fluid in the labyrinth seal 19, its resistance does not affect the operation of the vortex chamber 5. The resulting pressure difference between the supply tanks 9 and 10 leads to the flow of a small part of the fluid through the adjustable valve 14 into the supply tank 10. At the same time, the boundary fluid b in the tank 10 rises.

Moving along the suction nozzle 8, the liquid enters the vortex5

chamber 5 and is distributed on its periphery, filling the annular gap of the labyrinth seal 20. Under the action of increasing pressure on the dis 16 and as a result of a water hammer, the valve 1 moves with the disks 15 and 16 until the gate 18 closes. a section much smaller than the area of the disk 16 opens, despite the pressure in strip 4.

The pressure in cavity 4 and additional tank 21 becomes equal to atmospheric. The residual liquid from the cavity 4 is squeezed out under the influence of increasing pressure into the additional tank 22. The pressure in the suction nozzle 8 and the tank 10 and the pressure drop (below atmospheric) in the nozzle 8 and the tank 9 begin to increase until the fluid enters the vortex chamber 5 and labyrinth seal 19. The period duration is determined by the resistance of the control valve 1 4,

The device shown (FIG. 2) works as follows.

With an increase in pressure in the tank 9 through the open non-return valve 25 and the nozzle 23, the liquid under great pressure reaches the surface being cleaned of the part 28. The liquid cleaned and collected in the collector 27 through the regulating valve 29 and the open non-return valve 31 enters the container 10. check valves 26 and 30 are closed and do not lead to violation of the cycle parameters. After switching the device, the outflow of fluid from the nozzle 24 begins through

check valve 26 and filling the tank through the check valve 30.

Claims (3)

1. A device for creating pressure pulsations of a fluid, containing a controllable spool valve with two shut-off elements, each of which is installed in the housing to form control and drain cavities, and two vortex chambers, the inlets of which are connected to a pressure source; with supply tanks, and suction - with control valve cavities, with the locking elements connected by a rod passing through a channel connected to the atmosphere and periodically with a drain cavity, characterized in that rhenium functionality, storage tanks are interconnected via adjustable throttle mounted further, and the locking elements are designed as discs with closures arranged with the drain side of the cavity, and labyrinth seals placed on the side of the control cavity. 2. The device according to claim 1. is different. that it is provided with additional containers connected to the drain cavities of the valve. 3. The device according to claim 1, characterized in that it is provided with nozzles connected through non-return valves with supply tanks, and a fluid collector connected to the supply containers through additionally installed adjustable and non-return valves. . : -: S w 2