RU50862U1 - DISC VACUUM FILTER - Google Patents

Abstract

The invention relates to disk vacuum filters and can be used in coal, chemical, metallurgical and other industries for filtering suspensions. The technical result, which this technical solution is aimed at, is to increase the filter performance, reduce the consumption of compressed air and increase the completeness of removal of sediment at the time of blowing while reducing mechanical loads on the design of the device. The disk vacuum filter contains a bath 1 for suspension, a double-sided shaft 2 with channels 3 for draining the filtrate, filter sectors 4 located on the shaft 2 and communicating with the channels 3 of the shaft, and a device for mixing the suspension 5, the channels for draining the filtrate on each side of the shaft made with the possibility of periodic communication through the appropriate distribution head 6, 7 with a vacuum device and a source of pulsed supply of compressed air (not shown). When the shaft 2 rotates, the filter sectors 4 are immersed and exit the suspension sequentially. The filter sectors 4 through the respective distribution heads 6, 7 communicate with a vacuum device and a source of pulsed supply of compressed air. The dried sediment in the blow-off zone is discharged from the surface of the sectors by a pulse push of compressed air. The channels 3 in the two halves of the double-sided shaft 2 are offset by an angle equal to half the angle of the filter sector. Due to this, with the same blowing zones in both distribution heads 6, 7, pulsed blowing is carried out sequentially: first in one and then in the other half of the double-sided shaft. At the same time, dynamic shock loads on

shaft, and also reduces the flow of compressed air and increases the completeness of removal of sediment.

Description

The proposal relates to disk vacuum filters and can be used in coal, chemical, metallurgical and other industries for filtering suspensions.

Known disk vacuum filter containing a bath for a suspension, a double-sided shaft with channels for removing the filtrate, filter sectors located on the shaft and communicating with the channels of the shaft, and a device for mixing the suspension, and channels for removing the filtrate of each side of the shaft are made with the possibility of periodic communication through the appropriate distribution head with a vacuum device and a source of pulsed supply of compressed air [1].

A disadvantage of the known device is that with this technical solution, the blowing pulse is supplied simultaneously through two corresponding distribution heads to the filter sectors of both sides of the shaft. In this case, excessive dynamic loads on the double-sided shaft and increased consumption of compressed air are observed.

The technical result, which this technical solution is aimed at, is to increase the filter performance, reduce the consumption of compressed air and increase the completeness of removal of sediment at the time of blowing while reducing mechanical loads on the design of the device.

This result is achieved due to the fact that in the disk vacuum filter containing a bath for the suspension, a double-sided shaft with channels for draining the filtrate, filter sectors located on the shaft and communicating with the channels of the shaft, and a device for mixing the suspension, and channels for draining the filtrate of each of the sides of the shaft are made with the possibility

periodic communication through the appropriate distribution head with a vacuum device and a source of pulsed supply of compressed air, filter sectors connected to each side of the shaft are mounted on the shaft with an angular displacement relative to each other. The angular displacement of the filter sectors is equal to half the angle of the filter sector.

Figure 1 presents a General view of the filter, figure 2, 3 - respectively, sections aa and bb.

The disk vacuum filter contains a bath 1 for suspension, a double-sided shaft 2 with channels 3 for draining the filtrate, filter sectors 4 located on the shaft 2 and communicating with the channels 3 of the shaft, and a device for mixing the suspension 5, the channels for draining the filtrate on each side of the shaft made with the possibility of periodic communication through the appropriate distribution head 6, 7 with a vacuum device and a source of pulsed supply of compressed air (not shown).

When the shaft 2 rotates, the filter sectors 4 are immersed and exit the suspension sequentially. The filter sectors 4 through the respective distribution heads 6, 7 communicate with a vacuum device and a source of pulsed supply of compressed air.

The dried sediment in the blow-off zone is discharged from the surface of the sectors by a pulse push of compressed air.

The channels 3 in the two halves of the double-sided shaft 2 are offset by an angle equal to half the angle of the filter sector. Due to this, with the same blowing zones in both distribution heads 6, 7, pulse blowing is carried out sequentially: first in one and then in the other half of the double-sided shaft. At the same time, dynamic shock loads on the shaft are reduced, as well as reduced compressed air consumption and increased completeness

removal of sediment.

Thus, this technical solution will allow:

- increase filter performance;

- reduce the consumption of compressed air;

- increase the completeness of removal of sediment during blowing;

- reduce dynamic loads on the design of the device.

The source of information

1. O.A. Brook. Filtration of coal suspensions. M. Subsoil. 1978, p. 67-68.

Claims (2)

1. A vacuum disk filter containing a suspension bath, a double-sided shaft with channels for extracting the filtrate, filter sectors located on the shaft and communicating with the channels of the shaft, and a device for mixing the suspension, the channels for removing the filtrate of each side of the shaft are made with the possibility of periodic communication through an appropriate distribution head with a vacuum device and a source of pulsed supply of compressed air, characterized in that the filter sectors and the channel communicated on each side of the shaft Shafts for draining the filtrate are mounted on the shaft with an angular displacement relative to each other. 2. The disk vacuum filter according to claim 1, characterized in that the angular displacement of the filter sectors is equal to half the angle of the filter sector.