SU398850A1 - FILTER CLUTTER SIGNALIZER - Google Patents

Description

one

The invention relates to the field of instrumentation.

A filter clogging detector is known, comprising a piston with a magnet, moving in the presence of a pressure differential arising in the inlet and outlet of the hydraulic filter during clogging, and a magnetic indicator.

If there is a pressure drop (filter clogging), the piston with the magnet moves to the side. Lower pressure, the magnetic coupling between the magnets weakens, and the indicator magnet moves by the action of the spring in the direction opposite to the displacement of the piston, clamping the contact circuit and signaling the filter clogging .

The disadvantage of such a signaling device is low resistance to the effects of linear accelerations, impacts, vibrations, as in such conditions the magnet indicator can move and cause "false c" operation;

For (Improving the reliability of the proposed signaling device, the information link is made in the form of a balanced rotating magnet installed next to a magnet and moving progressively and oriented with its poles 2

mi opposite

the poles

the first magkit.

In the drawing of a drawing, the circuit diagram of the described signaling device contains a housing 1, a lorshen 2, a rod 3, a magnet 4, an axis 5, a rotating magnet 6, a base 7 "fixed 8 contacts, a spring 9.

A piston 3 is placed in the core /, which is connected to the magnet 4 by the rod 3. Outside the housing / on the pox 5 there is a balanced rotating magnet 6 equipped with a movable 1: ontact 7 electrical circuit of the simulator. To maintain the piston 2 in the lower position in the absence of a pressure difference in the housing / installed spring 9.

Inside the housing / there are two saddles 10 and, on which the end surfaces of inopniHH 2 are supported in the non-working and working position.

The operation of the detector is as follows.

Pressure is applied to the measuring body / on one side up to the filter P: and on the other side the pressure is downstream of the filter PZ. In the absence of a differential pressure, the piston 2 is supported by the spring 9 in the lower position, and its front surface is in contact with the seat 10.

A movable rotating malnite 6 with the pole N is attracted to the pole S of the magnet 4. The movable contact 7 times the whip.

A clogging of the filter above the permissible value for the porous 2 causes a pressure differential AP Pi-P, under the action of which the piston 2 moves BiBetpx and closes the orifice formed by the saddle 11. In this case, the magnet 4 takes its upper position, with iivOTOpOM magnetic connections between the pole 5 of magitite 4 and the N pole of the rotating magnet 6 weaken, while the upper opposite ones (the poles of the magnet 4 and 6 converge. The rotating magnet 6 turns the pole 5 of the 4 pole of the magnet 4, the moving contact 7 with a fixed contact 8 and the signal cumin blocked filter.

The piston 2 is attached to the saddle //, and the contaminated liquid 1 does not flow into the measuring case of the alarm device and does not enter the zone of cleaning liquid.

When the differential pressure is removed, the piston 2 returns to its original position, and the contact 7 opens.

P ip with d M et invented and

The filter clogging indicator, containing | Ii case, in which is placed a chu & element, made in the form of a piston loaded with a magnet, moving progressively, and a movable information link, interacting with the magnet due to magnetic connections, characterized in that to increase reliability, the information link in it is made in the form of a balanced rotating magnet installed next to a moving magnet and aligned with its poles opposite to the poles magnet.