SU60081A1 - Mechanical filter - Google Patents

Description

In modern technology, evaporation of crystallization with crystallization, especially on a large scale of production, the issue of selection of salt in the apparatus during the crystallization process is a serious and urgent problem.

The proposed mechanical filter solves this problem and allows continuous selection of salt from the apparatus with humidity up to 10-20%.

The principle of operation of the proposed mechanical filter is based on the work of an eccentric rotary pump with radial vanes. During its operation, there is a change in volume between the blades, the shells and the eccentric rotor, but since the mass entering the seal is compressible, by placing a filter net in the volume change zone instead of the surface part of the casing, it is possible to separate the saturated solution from the crystals moisture content of not more than 10-20%. After the release of the crystals go directly to the centrifuge.

When such a mechanical filter is installed in an evaporation or crystallization apparatus, which operates both with an increased LU-process and under vacuum, there is no need for a large number of settling tanks and the entire production process is simplified.

In FIG. 1 shows a cross; FIG. 2 is a longitudinal section of such a mechanical filter.

The filter consists of a casing 2, with which the eccentric rotor 9 rotates, which is integral with the axis 2, rotating on the ball-bearing supports 14 and 15 and equipped with sealing rings 16 and 17. The rotor 9 has a free cavity L, in which the fixed conical core 8 coaxially located with respect to casing 1. Blades 10 are slid on this core, sliding in longitudinal grooves of rotor 9 cut radially with respect to core circumference 8. Thus, when rotor 8 rotates The O axis (Fig. 1), the blades 10 with their inner edges (a) all the time in contact with the surface of the non-core core 8, and the outer edges with the inner surface of the skin. x 1,

and slides in the slots of the rotor 9, so that the camera, for example, B, is between the diameter of the adjacent blade 10, as you move along the arrow in FIG. 1, gradually changes its volume from the maximum under the inlet channel 1 of the crystallization apparatus to the minimum above the output channel II of the apparatus.

To firmly press the blades to the surface of the casing 1, the comic heart is made movable along its length, for which one end of its axis 18 is provided with a rotor, on which the screw 13 is locked in the axial direction of the nut 13, and the axis 18 itself is provided with a longitudinal groove in which the key is entered (not shown in the drawing), ukrenlenna in the clamp-moya plug 19.

When turning the nut 13, the core 8 moves in the direction of the axis of the axis and presses the edges (b) of the loaat to the inner surface of the casing 1.

A part of the side surface of the casing 1 is replaced by a filtering net consisting of two perforated arcuately curved sheets 6 with filter cloth 5 sandwiched between them.

The bottom sheet is pressed against the clamping bars 3 and 11, and the veochnine together

with strips 3 and 11 - outer: a cover 7 with an exhaust pipe # 20.

The action of the mechanical filter is as follows.

The solution containing crystals to be filtered enters the filter through channel I, is picked up by paddles 10 and carried to that part of the filter which is equipped with grid 5, 6. As it moves past the grid, chamber B gradually decreases in volume and through the grid passes out lischek fluid. By the time channel P is reached, the mass remaining in chamber B consists of crystals with a low content of liquid and a porous layer of 10–20% by weight of crystals.

Filtered crystals in the channel P.

PRED MET & A REFERENCE

Mechanical filter for crystallizers and the like ag parabot, o t; i and h and y with:: it is made of an eccentric rotary pump, part of the surface of the casing of which is sealed by a filter mesh.

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