JPS6341072Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a chopsticks residue cleaning device.

Sludge such as sewage screen scum has organic substances such as sludge attached to its surface, but the sludge and organic matter need to be treated separately, so the two must be separated by washing.

1 and 2 show a conventional sludge cleaning device. Here, reference numeral 1 denotes a cleaning tank, which is supplied with cleaning water 3 from a pipe line 2, and whose interior is divided into a cleaning section 5 and a separation section 6 by a baffle plate 4. The residue to be washed is fed into the washing section 5 by the feeding conveyor 7, and stirred and washed by the stirrer 8. The residue after washing flows into the separation section 6 together with the washing water 3, is scraped up by a dust remover 9, and is discharged. The organic substances flow out to the overflow gutter 10 together with the wash water 3, and are transferred to the pipe 11.
After that, it is sent to the next process. In addition, 12 is cleaning tank 1
This drain pipe is connected to the conduit 11 via a valve 13.

However, in such a conventional configuration, the force that draws the scum into the water is only generated by the water flow, so the entrainment force is weak, and some of the scum remains on the water surface, making it difficult to clean. There is a problem that cleaning is not performed. Further, since only agitation cleaning is performed using a water stream, there is a problem in that the cleaning efficiency is poor and a large amount of water and large power are required to separate adhering organic substances.

Therefore, the present invention aims to prevent the scum from remaining on the water surface in the washing section and to improve the washing effect by rough dehydration.

In order to achieve this purpose, the present invention divides the washing tank into an upstream washing section that receives the residue and a downstream separation section that can separate the washing water from the washing water. A separation weir with a flow structure is installed, and a fixed roller with the lower half immersed in water is placed at the sludge input position in the washing section, and the lower half is immersed in water while being biased toward this fixed roller. A sludge crushing dewatering and submersible pushing device having movable rollers is provided, and a tank ceiling portion is provided at a position lower than the upper end of the separation weir downstream of both rollers in the washing section.

Therefore, the sludge is caught up in both rollers and pushed into the water, which prevents this sludge from staying on the water surface, and also biases the movable roller toward the fixed roller. Therefore, this biasing force can be used to crush and dewater the sludge. Furthermore, because the tank ceiling of the washing section is located lower than the top of the separation weir, the washing water does not have a free water surface in this area and is always full. It is possible to prevent unwashed residue from floating on the water surface and short-circuiting to the separation unit, and as a result, the cleaning effect (rate of separation of organic substances, etc.) in the cleaning tank can be increased.

An embodiment of the present invention will be described below. In Fig. 3, 21 is a cleaning tank, and the separation weir 22
It is divided into a cleaning section 23 and a separating section 24 by the following. Cleaning section 2 at a position away from separation weir 22
A feeding conveyor 26 for sludge 25 is provided above 3. Below the input conveyor 26 is a horizontal fixed roller 27 that is rotationally driven by a drive device (not shown), and is placed on the side of this fixed roller 27 and is urged toward this fixed roller 27. A slag crushing and dewatering and submersible pushing device 29 having horizontally movable rollers 28 is provided. That is, the movable roller 28 is centered around the horizontal axis 3.
One end 3 of the L-shaped arm 31 that swings around 0
2, the L-shaped arm 31
The other end 33 is provided horizontally from the horizontal axis 30, and a weight 34 is attached to the tip thereof. With this weight 34, the movable roller 2
8 is generated, and the movable roller 28 is pressed by the fixed roller 27 and rotates together with the fixed roller. The contact portions of both rollers 27 and 28 are located directly below the input conveyor 26, so that the waste 25 from the input conveyor 26 can be received by these rollers 27 and 28. Note that the lower halves of both rollers 27 and 28 are immersed in cleaning water 35. 36 is a cleaning water supply pipe.

Cleaning section 2 on the downstream side of both rollers 27 and 28
The tank ceiling portion 37 of No. 3 is configured to be lower than the upper end 38 of the separation weir 22, so that the washing water 35 in this portion does not have a free water surface and is always in a full state.

In the separation part 24, 39 is an overflow gutter provided at a position away from the separation weir 22, and the upper end 40 of the overflow part is configured to be lower than the upper end 38 of the separation weir 22. 41 is a drain pipe from the overflow gutter 39, and a drain pipe 43 is connected through a valve 42 in the middle thereof. Inside the separation section 24, there is a dust remover 44 that scrapes up the residue after washing and discharges it to the outside of the tank 21.
is provided.

In such a configuration, the cleaning section 2 is connected from the pipe 36.
Cleaning water 35 is supplied into tank 21, and cleaning water 35 is supplied into tank 21.
The residue 25 to be washed is introduced from the input conveyor 26 while the residue 25 is flowing. Then, this residue 25 is received by both rollers 27 and 28 as shown in the figure.
It is wound up by both rollers 27 and 28 and is reliably pushed into the water, thereby preventing it from staying on the water surface. Furthermore, the residue 25 is moved by a movable roller 28 based on the weight 34.
crushed by the urging force applied to the fixed roller 27,
A part of the moisture contained in the residue is separated together with the attached organic matter, and the volume of the residue is temporarily reduced. Therefore, the agitator (not shown) in the cleaning section 23 facilitates the separation of organic matter adhering to the scum, thereby enhancing the cleaning effect. Furthermore, if a large amount of sludge that cannot be crushed by both rollers 27 and 28 is introduced, this sludge will be crushed into weight 3 as shown by the imaginary line.
The movable roller 28 is pushed open against the force of 4 to prevent overload from acting on these rollers 27 and 28.

The residue pushed into the water in the washing section 23 is stirred and washed, and organic substances such as sludge are washed off. In addition, since the sludge passes through the passage 45 in a full water state formed by the tank ceiling portion 37, even if there is unwashed sludge on or near the water surface, this sludge will be separated. A short circuit to section 24 is prevented.

The washing water containing the washed residue and the organic substances washed off from the residue flows over the separation weir 22 and into the separation section 24 . In the separation section 24, a dust remover 44 is installed.
is in operation, and only the residue is scraped up by this dust remover 44 and discharged. On the other hand, the cleaning water 35 other than the scum and the organic substances both flow into the overflow gutter 39 and are led to the next step through the discharge pipe 41 to be treated.

In the above embodiment, the moving roller 28 is urged by the L-shaped arm 31 with the weight 34 that swings around the horizontal axis 30, but any suitable urging means can be used. For example, as shown in FIG. As shown, a rod 47 attached to a support shaft 46 of the moving roller 28 may be biased by a compression spring 48.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the conventional example, Fig. 2 is a front sectional view thereof, Fig. 3 is a front sectional view of one embodiment of the present invention, and Fig. 4 is a main part of another embodiment of the present invention. FIG. 21...Cleaning tank, 25...Soil, 27...Fixed roller, 28...Movable roller, 29...Soil crushing and dehydration and underwater pushing device, 31...L-shaped arm, 34... Weight, 46...Support shaft, 4
7... Rod, 48... Compression spring.

Claims (1)

[Scope of utility model registration request] This is a sludge cleaning device that cleans organic substances such as sludge from sludge such as sewage screen scum, and has a cleaning tank with an upstream washing section that receives the sludge and a downstream section that can separate the sludge from the washing water. A separation weir with an overflow structure is installed in this partition, and a fixed roller with its lower half immersed in water is installed at the sludge input position in the washing section, and a A sludge crushing and dewatering and underwater pushing device is provided, which has a movable roller whose lower half is immersed in water, and which is located downstream of both rollers in the washing section and below the upper end of the separation weir. A sludge cleaning device characterized by having a tank ceiling at a low position.