SU840534A1 - Shaker - Google Patents

Description

- (54) WYROSSTEND

between the stop 11 of stroke 6 and 1kc of the surface 16 of the additional opening 10, which makes it possible to adjust the amplitude and frequency of oscillation of the vibrating table 17. An elastic gasket 18 is installed between the vibration table 17 and the cylinder I and the pressure cavity 19 is connected to the intermediate cavity 20 through the holes 8 in valve 9, valve 7, and separated from the drain cavity 21 by the end surface 22 of valve 7, pressed against the foot ring 14. The damper cavity 23 is in communication with the intermediate cavity 20 of the central opening 13 of the spring-loaded piston 12.

The vibration table works as follows. The working medium through the discharge channel 2 into the pressure cavity 19. Under pressure of the working medium on the end of the plunger 5, which creates a force that exceeds the pressure of the plunger 5 against the upper end of the valve 7, the plunger 5 moves upwards. Moving to the gap between the stroke limiter 11 and the end surface 16, the plunger 5 abuts against the stroke limiter 11 of the rod 6. The vibroetol 17, together with the plunger 5, continues to move upwards under the action of inertia forces.

As a result of a gap between the end surface 22 of the valve 7 and the elastic ring 14 of the spring-loaded piston 12, the pressure chamber 19 is connected to the drain cavity 21, and the spring 15 additionally pushes up the valve 7, increasing the gap between the end surface 22 of the valve 7, to the elastic ring 14 , The pressure of the working environment in the system drops. The vibrotable 17 together with the plunger 5 under the action of the springs 4 and the forces of its own weight moves downward until it comes into contact with the jTipyniM ring 14 is spring-loaded 840534

Porsch 12. At the time of the impact of the valve 7 with the stop ring 14, the spring-loaded piston 12 moves down and pushes the trapped volume of the working medium out of the damper cavity 23 through the throttling hole 13, which significantly reduces the hard impact. When the working medium enters the pressure cavity 19, the operating cycle of the shaker is repeated.

Thus, the use of an adjustable stroke limiter 11 allows the range of operating parameters and functionality to be expanded, and the use of a damping device increases the reliability of the shaker.

Claims (1)

Invention Formula  A vibrostand containing a cylinder with a discharge and discharge channel, in which a spring-loaded plunger is installed with a stem passing through a spring-loaded valve, characterized in that, in order to increase reliability and improve functional capabilities, the valve is designed as a glass with openings in the bottom for the passage of the working medium, and the rod is located in the hole additionally made in the plunger with the possibility of axial movement, equipped with an adjustable travel stop and secured in the specified glass, while in the cylinder under The damper device was installed in the form of a spring-loaded piston with a throttling hole. Sources of information taken into account in the examination 1. Copyright certificate СХСР № 533528, cl. F 15 B 21/12, 1976.