JPS606758B2 - Sludge dewatering equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sludge dewatering device, and more particularly to a sludge dewatering device, which is equipped with two endless furnace cloths that are driven by a driving layer, and dehydrates water-containing sludge by sandwiching the water-containing sludge between the two furnace cloths. Regarding equipment.

Conventionally, in a sludge dewatering device using two endless furnace cloths, the furnace cloth and the sludge sandwiched between the furnace cloths are alternately passed between a plurality of rollers arranged in two stages, and the sludge is removed from the rollers. There are those that dewater the sludge by applying the tension of the furnace cloth, and those that dewater the primary dewatered sludge that has passed between these rollers by further sandwiching it between pressing slopes and press dewatering.

However, in the former case, there are problems such as a low dehydration rate because only a force less than the tensile strength of the furnace cloth can be applied, and a shortening of the life of the furnace cloth if a high tension is applied to increase the dehydration rate.

In addition, in the latter case, since the running of the furnace cloth in the press dehydrating equipment is stopped during press dehydration, the running of the furnace cloth in the entire dehydrating equipment must be stopped accordingly, resulting in a semi-batch system and processing capacity. There were problems such as the furnace cloth being worn out due to the impact tension that occurs during the running/stopping cycle, and the sludge chute being prone to clogging, which hinders operation.

The purpose of the present invention is to solve the problems of the prior art,
It is an object of the present invention to provide a sludge dewatering device that has a high dewatering rate, can perform continuous treatment, and has a long furnace cloth life.

The present invention provides a sludge dewatering device having a roller dewatering device and a press dewatering device, in which rollers are provided before and after the press dewatering device, and these rollers are supported so as to be integrally movable. Even if the running of the oven cloth is stopped, moving the roller allows the oven cloth to continue running in other parts.

The embodiments shown in the accompanying drawings will be described below.

FIG. 1 is an explanatory diagram of the configuration of a sludge dewatering apparatus according to an embodiment of the present invention. The apparatus of FIG. 1 comprises an upper furnace cloth 3 suspended endlessly on first and second pulleys,
and the lower running part 7 of the upper tear cloth 3 is suspended endlessly on the fourth pulleys 4 and 5, and at least a part of the upper running part 6
A lower furnace cloth 8 is arranged so as to be able to travel while overlapping at least a part of the furnace cloth, and a drive device 9 for driving the upper furnace cloth 3 and the lower furnace cloth 8 are arranged alternately in two stages, upper and lower, in a staggered manner. a roller dewatering device 11 having a plurality of rollers OA to 10C arranged so that the overlapping portion of the upper furnace cloth 3 and the lower furnace cloth 8 passes through the outer periphery of the upper and lower rollers in sequence; A press dewatering apparatus having at least one pair of pressurizing plates 12A and 12B disposed on the downstream side of the furnace cloth travel than the apparatus 11, and in which the overlapping portions of the two furnace cloths 3 and 8 are pressurized between the pressurizing plates. 3, the press dewatering device 13 and the roller dewatering device 11
A first movable roller 14 is provided between the furnace cloths 3 and 8, and a first moving roller 14 is provided between the furnace cloths 3 and 8, and a first moving roller 14 is provided between the furnace cloths 3 and 8, and a first moving roller 14 is provided on the downstream side of the furnace cloth travel of the press dewatering device 13, and the furnace cloths 3 and 8 are suspended. a second moving roller 5, a support device 16 that integrally supports the first and second moving rollers so as to be able to reciprocate, and a drive device 17 for reciprocating the first and second moving rollers; It is equipped with

In this embodiment, the upper furnace cloth 3 and the lower furnace cloth 8 are driven by the same drive device 9, which includes an electric motor 9A, a belt 9B, and a drive.

It consists of 9C. In the figure, 18 is a sludge chute for supplying sludge 19 between the furnace cloths 3 and 8;
A to 20F are guide rollers, and 21 is dehydrated sludge.

In this device, sludge is supplied from the sludge chute 18 to one end 6A of the upper running portion 6 of the lower furnace cloth 3, and then
The two furnace cloths 3 and 81 are sandwiched together and first enter the roller dewatering device 11.

This movement of the oven cloth is carried out by a movement drive device 9. While passing between the rollers OA to 10C of this o-ra dewatering device 11, tension is applied to the furnace cloth and primary dewatering of the sludge is performed.

After passing through the roller dewatering device, rollers 9C, turtles 4, 20B, 2
After passing through 0C, it is put into the press dehydrator 3. The furnace cloths 3, 8 and sludge pressed into this press dewatering device are pressed by both pressure plates 12A, 12B and are sufficiently dehydrated.

In the press dewatering device 13, the pressure plate 12B is fixed.
12A is movable, and the pressure plate 12A is pressed downward by a hydraulic piston (not shown). When the dewatering is completed, the pressure from the pressure plates 12A and 2B is released, and the furnace cloths 3, 8 and dewatered sludge are transferred to the rollers 20D.
, 20E, A, 15, 20F, and then separated from both furnace cloths 3, 8 and sent to a predetermined next process. Dehydrated sludge 2
The upper oven cloth 3 after one peeling passes through the loaves 29 20A, 1, and the lower oven cloth 8 passes through the loaves 6, 4 and returns to the loaves 29, 20A, 1, respectively.

The running state of the furnace cloths 3 and 8 while the press dewatering device 3 is in operation will be described next.

The feeding of the furnace cloths 3, 8 within the press dewatering device 13 is stopped. In the conventional apparatus, the feeding of the furnace cloth in the entire dehydrating apparatus had to be stopped due to this, but in the apparatus shown in FIG. 1, the moving rollers 14 and 15 were moved in the direction of the arrow will be moved. Therefore, the distance between the rollers 9C and 14 and the distance between the rollers 14 and 20 become longer on the upstream side of the furnace cloth traveling from the press dewatering device 13, and the furnace cloth that has been traveling is
It can be stored between 14 and 20B. Further, on the downstream side of the cloth traveling from the press dewatering device 13, the distances between the rollers 5 to 20E and between the rollers 15 to 20F are shortened, and the shortening causes the cloth to be sent downstream from the roller 20F. The moving rollers 4 and 15 are supported integrally and reciprocally by a support device 16, and are reciprocated by a drive device 17.

Since the rollers 4 and 15 are integrally supported, their driving is also integral, and the storage speed of the furnace cloth on the upstream side and the furnace cloth delivery speed on the downstream side are exactly the same, and the furnace cloth in the entire dewatering device is The running is assumed to be completely smooth. Next, when the pressure from the pressure device 13 is released, the furnace cloths 3 and 8 resume their circulation as a whole, but at this time, the movable rollers 14 and 15 are gradually moved by the drive device 17 in the direction of the arrow y in FIG. The press is then moved to prepare for the next press dewatering operation.

By repeating such reciprocating movements of the moving rollers 14 and 15, the furnace cloths 3 and 8 can be smoothly circulated throughout the entire apparatus even during the operation of the press dewatering apparatus 13, making continuous processing possible. Ru.

FIG. 2 is an explanatory diagram of the configuration of a sludge dewatering device according to another embodiment of the present invention.

In the apparatus shown in FIG. 2, two moving rollers are provided on the upstream side and the downstream side of the press dewatering device 13, respectively. The moving rollers 14A, 14B, 15A, and 15B are integrally supported by a support device 16 and reciprocated by a drive device 17. By providing a plurality of pairs or more of moving rollers in this manner, the amount of furnace cloth stored during operation of the press dewatering device i3 increases, and it becomes possible to perform the press operation for a long time. Also, if the press time is not extended, the stroke distance is reduced. Further, in the device shown in FIG. 2, the pulley 2 is driven and rotated by an electric motor 9A, the upper furnace cloth 3 is moved, and the lower furnace cloth 8 is moved and driven by the movement of the upper furnace cloth 3. .

The operation of the other components of the device is the same as that of the device shown in FIG. As explained above, the sludge dewatering device of the present invention is equipped with both a roller dewatering device and a press dewatering device, and moving rollers are provided on the upstream and downstream sides of the press dewatering layer, respectively. Even during operation, the integral movement of the moving rollers ensures the running of the furnace cloth throughout the apparatus, thereby improving throughput and dewatering efficiency.

Furthermore, the running of the furnace cloth. There will be no operational problems such as wear and tear on the furnace cloth or clogging of the chute due to shutdown. Although the apparatus of the present invention is for treating water-containing sludge, the apparatus of the present invention can generally treat sludge containing liquids such as oil, alcohol, etc., in addition to so-called daily water.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the configuration of a sludge dewatering apparatus according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram of the configuration of a sludge dewatering apparatus according to another embodiment of the present invention. 1, 2, 4, 5...Bouli, 3...Upper oven cloth, 8...Lower oven cloth, 9...Drive device for oven cloth traveling, 11 ...Roller dewatering device, 13...Press dewatering device, 14, 14A, 14B...First moving roller, 15, 15A, 15B...Second moving roller,
16...Moving roller support device, 17...
・Drive device for reciprocating the moving roller. Figure 1 Figure 2

Claims (1)

[Scope of Claims] 1. An upper filter cloth that is endlessly suspended on the first and second pulleys, and an upper filter cloth that is endlessly suspended on the third and fourth pulleys and at least a part of the upper running portion of the upper filter cloth. A lower filter cloth arranged so as to overlap at least a portion of the lower running portion, a drive device for running the upper filter cloth, and a drive device for running the lower filter cloth, arranged in a staggered manner. a roller dewatering device having a plurality of rollers arranged so that the overlapping portion of the upper filter cloth and the lower filter cloth sequentially passes through the outer periphery of the rollers; a press dewatering device having at least one pair of pressurizing plates disposed in the pressurizing plates, in which the overlapping portions of both filter cloths are pressurized; and a press dehydrating device provided between the press dehydrating device and the roller dehydrating device; a first moving roller on which both the filter cloths are suspended; a second moving roller provided on the filter cloth travel downstream side of the press dewatering device and on which both the filter cloths are suspended; A sludge dewatering device comprising: a support device that integrally supports a movable roller so as to be able to reciprocate; and a drive device for reciprocating the first and second movable rollers. 2. The sludge dewatering device according to claim 1, wherein two or more first and second moving rollers are each provided.