SU667220A1 - Vibrated slit filter - Google Patents

Description

one

The invention can be used to separate suspensions in the chemical, petrochemical, and other industries.

A slot filter is known, comprising a housing, a filter element made up of rings arranged one above the other, and scrapers for removing sediment 1. However, sediment accumulates on the surface of the scrapers and rings, which reduces the efficiency of the separation process.

Also known is a continuous slotted filter comprising a housing with a lid and a bottom, filter elements made of rings mounted one above the other with a gap, a device for removing and unloading the sludge with a vibro-drive and a drive of the filter elements 2. However, over time, the device for unloading the sludge accumulates solid phase and practically stops working, especially when separating suspensions. In addition, the filter has a small filter surface.

The purpose of the invention is to intensify the separation of suspensions, to ensure continuous regeneration of the filter elements, to improve the performance and reliability of the filter.

This goal is achieved by the fact that the rings are made with annular grooves and holes on the contacting surfaces that form channels for the drainage of the filtrate during assembly, and the device for removing and unloading sediment is made in the form of an electrically connected non-uniform box equipped with a comb with a tooth between the filter elements.

The boxes are installed along the filtered elements from the inner and outer sides.

FIG. 1 shows the proposed filter, a general view; in fig. 2 — node I in FIG. one; in fig. 3 - section A-A of FIG. one; FIG. 4 is a section BB of FIG. one.

Claims (2)

The filter consists of a cylindrical body 1 and an upper lid 2 with a gland seal 3, a hollow shaft 4, a sleeve 5 for draining the cleaned product and a pulley 6, and also from the bottom cover 7 with a branch pipe 8 FOR supplying the initial suspension and a rectangular cut-out for placing the plate 9 a movable vibrating device for cleaning the filtering surface consisting of a flat cone 10, a nozzle 11 for draining sludge, boxes 12 and a vibrator 13. A plate 9 with holes 14 for draining sludge is connected to a flat cone through an elastic gasket 15. The entire movable device for cleaning the surface of the filter is held on the same elastic gasket 15 fixed between the lower cover 7 and the plate 16 with a rectangular cutout. The filtering elements of the vibrating slit filter are made in the form of a rotating package of rings 17 so that a package of smaller rings is coaxially placed in a package of large ones, and between the larger and smaller package of rings there are vertical channels for the flow of suspension, inside each of which there are vibrating boxes 12 for continuous cleaning gaps and removing sediment. The rings 17 are placed in the groove 18 of the collector 19 and fastened with screws 20. Along the perimeter of the groove 18, holes 21 are drilled to drain the cleaned slurry. The rings 17, forming the package, have two horizontal annular channel 22 with a cross section of a semicircle, turned chord down. Channels 23 are drilled in each ring. Vertical channels 23 intersect with annular horizontal semicircular channels 22 and are on the same axis with openings 21 of collector 19. Between each pair of rings, annular slits 24 with a size of 0.15 are formed along their outer and inner radii mm, which are connected to the vertical channel 23 by the channels 22. The vibrating boxes 12 for cleaning the slots 24 are made so that the larger cheek 25 of the box 12 is adjacent to the end surface of the rings 17, and the smaller 26 forms a gap on the side of the incoming flow. A comb 27 with teeth 28, turned to the annular gap at an angle, for example, 45 °, is installed inside the box. The box 12 through the holes 14 is connected to the cavity of the flat cone 10. The vibration to the cleaning box 12 is transmitted from the vibrator 13 through the flat cone 10 and the plate 9. The continuous vibration slotted filter works as follows. The suspension to be separated, at a certain pressure in a continuous flow through the pipe 8, enters the housing 1, is pressed through the slots 24 of the filter rings 17, on which solid particles of the suspension settle. The cleaned slurry, passageway slits 24, horizontal channels 22, vertical channels 23, a collector 19 and a hollow shaft 4 through the coupling 5 leaves the filter. The sediment formed on the end surfaces of the rings and at the annular gaps under the action of the vibrating teeth 28 of the comb 27 is destroyed and under the action of the tangential force of the teeth is thrown into the cavity 29 of the duct 12. The sediment under the pressure of the suspension in the apparatus and its own weight drops down and the hole 14, enters a flat cone 10, and then is led out of the installation through a nozzle 11 for draining sludge. Thus, in a liquefied suspension, the precipitation of solid particles under the action of gravity takes place more freely. Sludge removal takes place with less hydrodynamic resistance. The interaction of the vibrating teeth 28 of the comb 27 with annular gaps ensures reliable regeneration of the filtering surface and stable operation of the filter. Compared to structures of this type with a small volume, the filter has a large active filtering surface, a stable system of vibration cleaning of the filter surface and the ability to continuously remove sludge, is reliable in operation, does not require adjustment during operation, and has a small hydraulic resistance. Claim 1. Vibration slit filter, comprising a housing with a lid and a bottom, concentrically mounted cylindrical filter elements made of rings mounted one above the other, a device for removing and unloading the sludge with a vibratory drive and a drive of filter elements, characterized in that separating the suspensions, ensuring continuous regeneration of the filter elements, increasing the productivity and reliability of operation, the rings are made with annular grooves and holes adjoining surfaces, and the device for the removal and discharge of sediment is made in the form of an unequal box connected to the vibrodrive, equipped with a comb with teeth mounted between the filter elements. 2. The filter according to claim 1, wherein the ducts are installed along the filter elements on the inner and outer sides thereof. Sources of information taken into account in the examination 1. USSR author's certificate number 402374, cl. B 01 D 32/26, 1970. 2. USSR author's certificate number 429830, cl. On 01 D 25/18, 1972.