SU1452617A1 - Vibration exciter actuated by pressure fluid - Google Patents

Abstract

The invention relates to a vibration technique. The purpose of the invention is to expand the technological capabilities of the vibration exciter by adjusting its vibration modes. The energy carrier under pressure enters the cavity above the piston 2. The radial holes 5 are initially blocked by the spool 6, therefore the piston and the spool under the action of pressure mix, ayut down, stretching the spring 3. As the spring 3 expands, the movement of the spool slows down, the radial ones open holes 5, and the pressure above the piston drops. The spring 3 with the spool 6 is returned to the idle state, and the piston under the action of the spring 7 moves upward, blocking the apertures 5. 1 sludge.

Description

The invention relates to vibration technology and can be used as a drive for various vibration machines for technological purposes.

The aim of the invention is the expansion of 5 technological capabilities by regulating vibration modes of the exciter.

The drawing shows a self-oscillating vibration exciter. 'θ

The self-oscillating vibration exciter contains a housing 1 in which a piston 2 and a spring 3 are installed. A sleeve 4 is mounted in a piston 2 fixedly coaxial with it. A series of radial holes 5 is made on its protruding part of the piston 5. A spool 6 is installed inside the sleeve 4 with the possibility of axial movement relative to the sleeve, suspended on a second spring 7, the second end of which is attached to the adjusting screw 8, with the help of which the position of the spool relative to the housing 1 is adjusted. The supply and drain pipes 9 are connected to the housing 1 and 10.

Vibration exciter works as follows. 25

Under pressure, the energy carrier enters the housing 1 through the pressure line 9 and acts on the piston 2. At the initial moment, the spool 6 closes the holes 5 in the sleeve 4, therefore, the piston 2 together with the spool 6 compressing the spring 3 starts βθ to move down. The spool 6, moving down, stretches the spring 7 due to the pressure difference acting on it from above and below. By the time when the pressure force of the energy carrier on the spool 6 is approximately equal to the force stretching the spring 7, the spool stops, and the piston 2, continuing to move downward, opens the holes 5 of the spool sleeve 4. The energy source begins to flow through the channel of the sleeve 4 and the drain line 10 into the atmosphere , in connection with which the pressure under the piston drops sharply and due to the tensile force of the spring, the spool 6, the mass of which is much less than the mass of the piston 2, quickly returns to the unstressed position. The piston 2 also starts to move upward due to the spring 3 and, having overtaken the spool, closes the holes 5 with it. Due to the rapid increase in pressure above the piston, the latter stops quickly, while the spool moves downward under the atmospheric pressure flow for some time to its position at the beginning of the cycle.

Next, the cycle repeats. Regulation of the oscillation mode can be carried out smoothly and on the go with the help of an adjusting screw 8, which changes the position of the holes 5 relative to the valve 6.

Claims (1)

Claim A self-oscillating vibration exciter, comprising a housing with inlet and outlet pipes, an piston placed in it and axially spring-loaded piston, a spool and an adjustment screw, characterized in that, in order to expand technological capabilities, it is provided with a piston fixed to it and protruding one of its end surfaces of the sleeve with a series of radial holes on its protruding part, a second spring mounted on the adjusting screw and spool, the last of which 35 is installed in the sleeve with the possibility moving along its axis.