SU1319891A1 - Belt vacuum-filter - Google Patents

Description

The invention relates to vacuum belt filters and can be used in mineral processing techniques as well as in the chemical, poverty and other industries.

The aim of the invention is to increase the filter performance while increasing the reliability of operation.

FIG. 1 shows a belt vacuum filter, general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. one; in fig. 5 is a view of FIG. one.

Vacuum belt filter contains a flat carrier belt 1 with a drainage base connected to the vacuum chamber 2, drive 3 and tension 4 drums, filter cloth 5 adjacent to the carrier tape 1, supporting table 6 under the upper branch of the carrier tape 1, provided with sides 7. In the zone of formation of the sediment at the sides 7, there are installed plates 8 having the shape of a helix arranged vertically in the zone of loading the sediment at an angle to the horizontal plane at the exit of the formed sediment. The drive and tension drums 3 and 4 are made with sides 9 located in alignment with the sides 7 of the support table 6. The mouth of the filter loading device is made of the top 10 and bottom 11 plates forming a slot across the entire width of the belt 1. The top plate 10 is fixed on a hinge and can be locked in position. In addition, the top plate 10 is equipped with a vibrator 12 for

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improving suspension loading conditions and sludge formation.

It is advisable to choose the angle of inclination of the forming plates 8 in the range of the angle of dynamic slope - the angle of repose of the dehydrated material.

Belt vacuum filter works as follows.

The initial suspension is supplied to the upper branch of the moving belt 1 through the mouth of the loading device between the plates 10 and 11. The upper plate 10 is then installed and fixed in accordance with the suspension capacity, which ensures an even distribution of the suspension across the filter belt. When feeding thick suspensions, as well as in the starting or stopping period, the vibrator 12 can be turned on, causing the suspension to be in a pseudo-liquid state. In the loading zone and in the suction zone of the main amount of the filtrate, sediment is formed using plates 8. From the zone of sediment formation, the cake leaves in the form of a truncated pyramid and further moisture suction is produced from it. Boards 7 prevent runoff of excess moisture and material spillage. The beads 9 on the drive 3 and tension 4 drums serve to clearly fix the position of the carrier tape 1 with the filter cloth 5 and prevent the cake from pouring onto the lower branch of the tape during unloading. The dehydrated material is discharged from belt 1, the filter cloth is regenerated, and then the cycle is repeated.

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Claims (1)

TAPE VACUUM FILTER containing a carrier tape with a drainage base connected to a vacuum chamber, a drive and a tension drum, an endless filter tape, a supporting table and a loading device made in the form of upper and lower plates forming an outlet gap along the entire width of the filter tape, different the fact that, in order to increase the filter performance while increasing the reliability of the work, the supporting table and drums are equipped with lying on the same plane and protruding above the surface Strongly carrier tape sides, a charging device is provided made in the form of helical lines converging towards the longitudinal axis of the filter plates forming side, and its upper plate is provided with a clamp and is rotatably mounted. § CO <X> OO CO>