SU1025455A1 - Filtering centrifuge with piston discharge of deposite - Google Patents

Description

The invention relates to chemical engineering, namely, filtering centrifuges with a piston discharge of sediment, which are used in chemical, coke-chemical and other related areas of progress High productivity of these centrifuges, the possibility of washing the precipitate, unloading a pulsating piston, giving a slight crushing of crystals, It explains the widespread use of centrifuges of this type. . The complex assembly of the piston centrifuge is a hydraulic system that reciprocates the piston and the rotor pusher associated with it. A known centrifuge with an independent hydraulic system for switching fl3 spool. The disadvantage of this centrifuge is the occurrence of significant hydraulic shocks with increasing switching frequency. Closest to the invention to the technical essence is a centrifuge, containing a frame, mounted on the hollow shaft, a rotor, a pusher placed inside it, mounted on a rod, mounted inside the rotor shaft with the possibility of reciprocating movement of the rotor, a hydraulic cylinder with a piston,: spool with control to the dial electromagnetic element and contactless sensors of the end positions of the pushers. In this centrifuge, the control metal magnetic element of the electronic sensors of the end positions of the pusher is fixed on the OSIVA and is surrounded by a hermetic cylinder, which is a continuation of the main power cylinder. This centrifuge allows the return frequency to be increased 2 times; obtuse movements pushers С2J. However, the presence of a hermetic cylinder, which upholds the working pressure of the oil, complicates the design of the cylinder and increases the working gap between the electronic sensor and the magnetic element, which leads to a decrease in the accuracy-response of the sensor. The purpose of the invention is to increase the reliability of the centrifuge. This goal is achieved by the fact that in a centrifuge containing a frame mounted on the hollow shaft is a rotor, a pusher placed inside it, mounted on a rod mounted inside the rotor shaft with the possibility of reciprocating movement of the rotor, a hydraulic cylinder with a piston, a gold pipe with a control electromagnetic element and contactless sensors of the end positions of the pusher, in a rod perpendicular to its axis in the section between the rotor and the hydraulic cylinder a finger is rigidly fixed, on the free ends of which is mounted IAOD bearing and in the shaft there are longitudinal grooves for accommodating the latter, wherein the control member is a solenoid, a split ring, encompassing the bearings and retaining them against radial displacement on the pin, and the end position proximity sensors mounted to the pusher frame. 1 shows a centrifuge, a general view, a longitudinal section; figure 2 is the same section along the rotor shaft in the place of installation of the ring. The centrifuge contains a bed 1 mounted on the hollow shaft 2 of the rotor 3 with the pusher 4 placed in it, which is fixed on the rod 5 mounted in the hollow shaft with the force of reciprocating movement. The rotor is rotated from the electric motor 6. A reciprocating movement of the pusher is provided by the hydraulic cylinder 7, in which the piston 8 mounted on the rod 5, the spool 9 and the pump 10 are installed. In order to limit the movement of the pusher 4, contactless sensors 11 of the end positions are installed The pin 12 is fixed in the rod 5 of the perpendicular to its axis, the bearings 13 are mounted on the free ends. In the hollow shaft 2 there are made longitudinal grooves 14 in which the submutations 13 are placed. The control electromagnetic element is made material of interacting with a proximity sensor, and is a split ring 15, covering the bearings 13 and retaining them against radial displacement on the pin 12. The centrifuge works as follows. The shaft 2 with the rotor 3 is rotated by the electric motor 6. Through the ball bearings 13 and the pin 12, the torque is transmitted to the rod 5. With the pusher 4, the oil supplied by the pump 10 to one of the cavities of the hydraulic cylinder 7 moves the piston 8, the rod 5 and sensible - body 4. When the pusher reaches the extreme position, one of the sensors 11 is activated, the signal from which is fed to the spool 9. When switching the spool, the direction of oil supply changes and the direction of movement of the pusher changes. As a result, the sensors are triggered 11 pusher reciprocates

movement, providing unloading, sediment from the rotor.

Installing contactless sensors on the bed in the immediate vicinity of the control electromagnetic elements improves the accuracy of the switching device

and reduces the magnitude of the water hammer, leading to increased reliability. . the operation of the centrifuge as a whole,

The expected economic effect of the introduction of this invention is 15-18 thousand rubles. per year per centrifuge.

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Claims (1)

FILTERING CENTRIFUGE WITH PISTON UNLOADING SEDIMENT, containing a frame, a rotor mounted on a hollow shaft, a pusher located inside it, mounted on a rod mounted inside the rotor shaft with the possibility of reciprocating movement, rotor rotation drive, a hydraulic cylinder with a piston, a spool with a control element and a spool with a control element proximity sensors of the end positions of the pusher, characterized in that, in order to increase the reliability of the centrifuge in operation, the rod is perpendicular to its axis in the area between the rotor and a finger is rigidly fixed with a hydraulic cylinder, the bearings are mounted on its free ends, and longitudinal grooves are made in the shaft to accommodate the latter, while the control electromagnetic element is made in the form of a detachable ring covering the bearings and holding them from radial displacement on the finger, and proximity sensors of the end positions of the pusher mounted in the frame.