SU831084A3 - Web press for dehydrating machines - Google Patents

Abstract

The press assembly to remove water from a suspension or slurry uses two continuous mesh bands, with the material between them, with pressure rollers on the outer surfaces of the bands. The pressing zone is divided into four sections: the wedge-shaped entry between the bands, the register, the initial and main pressing sections. The pressure rollers in the initial press section are in a number of parts across the machine width, and are advanced and retarded in the direction of mesh band travel. The ends of the rollers overlap the zone of the next rollers. The design allows the width of the press to be increased, without having the rollers bending.

Description

(54) BELT PRESS FOR WASHING MACHINES

I

The invention relates to presses for dewatering machines, in particular to belt presses, and can be used in papermaking.

A belt press for dewatering machines is known, comprising a bed, upper and lower endless grids placed on parallel shafts, a wedge part with suction drawers, a register part with register shafts, a pre-press part with groups of parallel press shafts whose thrust bearings are installed in holders, and press part 1.

However, this press is not productive enough. In this type of equipment, the increase in productivity by increasing the width of the tape is not possible, since this will increase the deflection of the press rolls and the pressure across the width of the tape unevenly.

The purpose of the invention is to increase productivity.

This goal is achieved by the fact that the press shafts of each group of the pre-press section have a length less than the width

belt grid and located in a staggered 110re across the entire width of the belt grid with the formation of overlapping zones, with holders in which the thrust bearings of the press shafts of each group are installed pass / across the entire width of the press.

The width of the overlap zones is equal to half the diameter of the press rolls.

FIG. 1 shows a belt press; in fig. 2 - press shafts of the pre-press section, top view; in fig. 3 shows section A-A in FIG. 2

The belt press contains a wedge part 1 with suction pins 2, a register part 3 with register shafts 4, and the axial distance of the pairs of shafts 4 decreases as the material moves, the forge part 5 in which the holders 6 are placed across the entire width of the press. The holders 6 are equipped with thrust bearings 7, on which the press shafts 8 are mounted. The press shafts 8 have a length less than the width of the web of meshes and are arranged in a checkerboard pattern along the entire width of the web of meshes. The width of the overlapping zones (Fig. 2) is equal to half the diameter

press shafts. The pressing part 9 consists of a pair of shafts 10. The pressing pressure of the shafts 10 is controlled by the levers 11 and the bellows 12, and the pressing pressure of the shafts 8 is controlled by the levers 13 and the bellows 14. The upper and lower endless grids 15 and 16 are respectively placed on the shafts 17 and 18. The bed of the press consists of a rack 19 and of the upper and lower frames 20 and 21, respectively.

The device works as follows.

The dehydratable material is placed between the grids 15 and 16 and moves along with them, the passage successively through the wedge, register and forpress and press parts. Pre-dehydration is carried out in the wedge part. In each subsequent part, the pressing pressure increases and the moisture content of the material decreases.

The use of press rolls having a length of less than the width of the ribbon net allows increasing the width of the press, increasing the specific pressing pressure, and therefore productivity.

Claims (2)

1. Belt press for dewatering machines containing a frame, upper and lower endless belt grids, placed on parallel shafts, a wedge part with suction drawers, a register part with register shafts, a prepress part with groups of parallel press shafts, which support supports are installed in holders, and a press part, characterized in that, in order to increase productivity, press shafts each the groups of the pre-press part have a length less than the width of the ribbon grid and are arranged in a checkerboard order across the entire width of the ribbon grid with the formation of overlapping zones, with holders in which Pore bearings of the press rolls of each group pass over the entire width of the press. 2. A device according to claim 1, characterized in that the width of the overlapping zones is equal to half the diameter of the press rolls. Sources of information taken into account in the examination 1. Austrian patent number 313044, cl. 55 On 12, 1970. SoffO goherenr / tnuff