SU1176920A1 - Dynamic filter - Google Patents

Description

The invention relates to filtering, in particular to dynamic filters designed to separate difficult-to-filter suspensions with sticky sediments. It can be used in the production of bio-preparations released from raw materials of plant and animal origin.

The aim of the invention is the provision of unloading sticky sediment without Yu disassembly of the case and reduce foaming.

Figure 1 shows the proposed filter in section; in Fig.2 a section aa in Fig.1. 15

The filter includes a housing 1 with a nozzle 2 for supplying the suspension and nozzles 3 and 4 for outputting the filter,

In the cavity of the housing 1 is placed a hollow shaft 5, on which is fixed a filtering 20. element 6, made in the form of a hollow perforated mixer, covered with a filter septum.

At the bottom of the housing 1, a filter cup 7 is installed perpendicular to its axis, the lower half of which ^is perforated and covered with a filter partition (cloth). The cavity of the housing 1 is connected with the cavity of the glass 7 through its side surface. thirty

In the glass 7, a hollow rod 8 and a hollow piston 9, outwardly brought out and connected to the vibrator, are placed with the possibility of reciprocating movement, and the frontal surface of which is perforated and covered with a filter partition. On the periphery of the piston 9, the coil of the spiral spring 10 is strengthened. The second end of the spring 10 is attached to the sludge discharge hatch 11.40 Dip fixing the hatch 11 in the closed position, a stopper 12 is installed. The rod is equipped with a branch pipe 13 for additional drainage of the filtrate and supplying compressed gas. Above the filter element 45 on the shaft 5, radial rods 14 are mounted for defoaming.

The filter works as follows.

The initial suspension enters through the nozzle 2 of the suspension injected into the cavity of the housing 1. The shaft drive '5 is activated. A vacuum is connected to the nozzles 3 and 4 of the filtrate outlet. The suspension is stirred by the blades of the filter element 55 'of the element 6 and is divided under the action of the pressure drop across the filter material of the blades. °

The filtrate passes into the cavity of the blades of the element 6 and is discharged through the hollow shaft 5 outside the housing. The sediment accumulating on the surface of the blades of the filtering element 6 is continuously removed by centrifugal force, and the filtering material is continuously regenerated by sucking particles from the pores of the fabric with a pumping effect that occurs when the suspension is circulated.

The precipitate or condensed suspension that is thrown from the blades is directed to the filter wall of the glass 7, where it is finally filtered and pressed out under the action of the pressure drop. During filtration in glass 7 a vibrator connected to the rod 8 is turned on. Through the rod 8 and the piston 9, the vibrational oscillations are transmitted to the spring 30.

When the turns of the spring 10 oscillate, the sediment layer on the filtering surface of the glass is continuously destroyed, which contributes to a significant decrease in filtration resistance and an increase in the process speed. After filtering in the glass 7, the drive of the reciprocating movement of the piston 9 is activated and the latter moves in the direction of the sludge discharge hatch. When the piston 9 is moved, the sediment is cut by the coils of the spring 10 from the filtering surface of the glass 7. The cut sediment is collected inside the cylinder that is formed when the spring is compressed by its coils, the surface of the piston 9 and the hatch 11 of the sludge discharge.

After the spring 10 is fully compressed, the stopper 12 rises, the hatch opens, and the piston 9 moves to the discharge port. When moving the piston 9 into the cavity of the rod 8 through the pipe 13 serves compressed gas. Under the action of a gas compression pulse passing through the perforated surface of the piston 9 and the filter septum on this surface, the spring 10 instantaneously stretches with subsequent vibrations, with the sticky sediment being separated from the surface of the piston 9 and the spring 10 and removed from the housing I.

After unloading the sludge piston 9 returns to its original position, while the associated spring 10 in the stretched position is placed

3

inside the cup 7, and the opening of the sludge discharge closes with the hatch 11.

The hatch is fixed in the closed position by the stopper 12.

If it is necessary to dry the sediment through the pipe 4 and the piston 9, coolant is supplied, a vibrator is connected to the rod 8 and the shaft 5 is driven to rotate, and the filter 1176920

four

element 6 is a dust separator

The dried sediment is discharged from the body by the proposed method.

When filtering the suspension with a dynamic filter element 6, foaming is minimized by rods 14.

13

1

1176920

Claims (2)

1. DYNAMIC FILTER, comprising a housing with nozzles for supplying slurry and removal of filtrate, a hollow shaft with a filter element fixed on it and a perforated glass covered with a filtering partition, characterized in that in order to unload the sticky sediment without disassembling the body and reduce foaming, the glass mounted horizontally in the lower part of the housing and provided with a rod, a vibrator and a hollow piston with a perforated frontal surface covered with filtering placed on one of the ends and interconnected m material installed from the other end and connected to the piston with a spring placed inside the glass, as well as with a stopper for unloading sediment. "G 2. Filter by. Claim 1, characterized in that it is provided with a defoamer fixed on the hollow shaft above the filter element, made in the form of rods mounted radially to the housing axis. , δ and 1176920 > 1176920 · 2