JP2779716B2 - Screen residue crushing washing dehydrator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen residue which is washed while crushing the uncrushed material of the screen residue which has been scooped and recovered from a water channel of a sewage treatment plant, a pumping station or the like, and supplies it to a dewatering step. And a crushing / cleaning / dehydrating apparatus.

[0002]

2. Description of the Related Art In a sewage treatment plant, a pumping station, and the like, solids mixed in sewage are separated from sewage, and the solids and sewage are separately treated. This solid is generally called a screen residue, and is collected from the sewage by being scooped and collected by a dust remover.Therefore, it contains a large amount of uncrushed material such as human dung, and has an extremely high water content. Dumped in state,
In addition to incineration, it cannot be transported to the dumping location. For this reason, the collected screen residue is dehydrated to a required moisture content.

[0003]

Since the collected screen residue contains uncrushed human feces and the like, the screen residue is washed and then dehydrated. In this method, the collected screen residue is put into a washing tank, and the waste is dissolved and dispersed in water by stirring to remove the residue. The screen residue washed from the washing layer is separated by a dust remover or the like and then dehydrated. For this reason, a large amount of water is required for cleaning, and a large installation space for the cleaning tank is required.

According to the present invention, while the screen residue after recovery is efficiently washed with a small amount of washing water, the waste is crushed and removed, followed by dehydration, and then sent to the next transportation, incineration and dumping, etc. to wash and dehydrate the screen residue. Is performed more reliably and with a compact device.

[0005]

Means for Solving the Problems In order to achieve the above object, a screen residue crushing washing dewatering apparatus of the first invention is provided.
A crushing and washing device comprising a press plate and a roller opposed to a press plate and a roller for crushing the uncrushed material in the screen residue collected from the sewage treatment plant and introduced into the crushing and washing device is provided in the casing, and the crushed screen is provided. Rolls of residue
A nozzle for injecting washing water toward the screen residue is disposed at a position where it falls from between the press plates, and a dehydrating means for pressurizing and dehydrating the plunger forward and backward in the cylindrical screen below the nozzle is provided below the nozzle. The means is provided with a transfer duct. In order to achieve the same object, the screen residue crushing washing and dewatering device of the second invention is a press plate for crushing uncrushed material in the screen residue collected from a sewage treatment plant and introduced into the crushing and washing device. And a crushing and cleaning device having a pair of rollers and rollers is provided in the casing, and a nozzle for spraying cleaning water toward the screen residue is disposed at a position where the crushed screen residue falls from between the roller and the press plate. A dehydrating means for pressurizing and dehydrating the plunger forward and backward in the cylindrical screen below the cylindrical screen is provided, and the dehydrating means is provided with a rinsing tank for rinsing, and the cleaning water is supplied to the rinsing tank. A washing water supply pipe, a dewatering means for pressurizing and dewatering the screen residue flowing over the rinse tank, and a transport duct connected to the dewatering means. That.

[0006]

[Action] Screen residue collected from a sewage treatment plant, etc.
While crushing uncrushed dirt and the like by passing between a roller having a cleaning function of jetting cleaning water from a nozzle and a cleaning roller and a press roller, the crushed dirt is washed away by jetting of high-pressure cleaning water,
After dehydrating under pressure or further rinsing in a rinse tank, dehydrating under pressure. As a result, even with screen residue mixed with uncrushed wastes, the conventional washing tank can be eliminated, the crushing and washing can be reliably performed with a compact device, and the smelt can be incinerated as it is and the odor can be prevented from scattering.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A screen residue crushing washing dewatering apparatus of the present invention will be described below with reference to the illustrated embodiment. FIG. 1 shows a first embodiment of a screen residue crushing washing dewatering apparatus of the present invention. The screen residue scraped and collected by a dust remover or the like from a water channel of a sewage treatment plant, a pumping station or the like is continuously or intermittently supplied to a crushing / cleaning device A via a conveyor or the like. The pressure is supplied to the pressurized dewatering device B provided below. The crushing and washing device A is provided at a position below the lower end of the leading end of a conveyor or the like, and is provided above the pressure dehydrating device B so as to double as a hopper so that screen residue can be easily introduced.

This crushing and washing apparatus A has a casing 1 in which a press plate 2 and a rotatably driven roller 3 are opposed to each other.
In addition, the roller 3 is rotated to press the press plate 2 against the roller 3 with a required pressure, and wash water is injected at a required high pressure toward the outer peripheral surface of the roller or between the roller and the press plate. And a nozzle 4 for cleaning dirt.

As a result, the collected screen residue S which is put into the casing 1 directly from a conveyor or the like or via a chute or the like falls between the press plate 2 and the roller 3, and the rotation of the roller 3 and the pressing When the screen residue passes between the roller and the press plate due to the pressing force on the roller side of the plate 2, the uncrushed material is crushed and dewatered by squeezing, and is washed with washing water jetted at a high pressure. Is done.

The press plate 2 has an arc shape, is pivotally attached to the casing 1, and has a lower end portion along the outer peripheral surface of the roller 3. Therefore, the distance between the press plate 2 and the roller 3 is wide at the upper side of the press plate and narrow at the lower side, so that the screen residue dropped on the press plate by the rotation of the roller naturally falls on the press plate surface. The roller slides downward along the roller, and is strongly pressed between the press plate and the roller at the lower position of the roller to be dewatered and to crush the uncrushed waste.

Nozzles 5 and 5 are provided at positions where the screen residue drops through the roller and the press plate, and spray high-pressure washing water toward the screen residue, so that uncrushed dirt is crushed between the press plate and the roller. Then, when it falls down together with the screen residue, it is washed by rinsing it with this washing water, and is supplied to the lower pressure dehydrator B, where the desired dehydration is performed.

In this case, as in the second embodiment of the screen residue crushing washing dewatering apparatus of the present invention shown in FIG.
A rinsing tank 6 can be provided on the lower inner bottom surface of the casing 1 and at a position where the screen residue compressed via the roller and the press plate falls. The rinsing tank 6 is a shallow tank, and has an inclined weir plate 61 on the side of the discharge chute 7 provided to guide the screen residue from the crushing and washing apparatus A to the pressurizing and dehydrating apparatus B. Is provided with a washing water supply pipe 62, and the washing water is sprayed toward the weir plate 61. As a result, the screen residue dropped into the rinsing tank 6 is rinsed by jetting of washing water, and then is passed over the weir plate 61 by this jetting pressure, sent to the lower pressure dehydrator B via the discharge chute 7, and sent to the lower pressure dehydrating apparatus B. is there.

The piston 9 (or screw) of the hydraulic cylinder 8 for squeezing and dewatering the screen residue supplied to the rinse tank 6 from the crushing / cleaning apparatus A is provided in the pressure dewatering apparatus B by a cylindrical dewatering screen. Provided in the residue cylinder 10, and by operating this cylinder, the piston advances and retreats in the cylindrical dewatering screen cylinder to intermittently squeeze and dehydrate the screen residue supplied from the rinsing tank via the discharge chute. ,
After that, it is supplied to the transport duct C connected to the pressurized dehydrator B and transported.

[0014]

According to the screen residue crushing washing dewatering apparatus of the present invention, even if uncrushed dirt and the like are mixed in the screen residue collected from a sewage treatment plant or the like, the roller, the press plate, and the washing water are injected. Crush washing in advance with a simple washing means consisting of a nozzle to wash, soak in water sufficiently, wash in the middle of the falling of the screen residue, pressurize and dehydrate, or rinse in the rinse tank, then pressurize By dehydrating, it is possible to continuously treat the screen residue collected from the treatment plant and the like, and if necessary, it is possible to simply carry out the treatment by incineration or the like as well as to prevent the odor from being scattered. There is.

[Brief description of the drawings]

FIG. 1 is a partially broken front view showing a first embodiment of a screen residue crushing and cleaning apparatus of the present invention.

FIG. 2 is a partially broken front view showing a second embodiment of the screen residue crushing and cleaning apparatus of the present invention.

[Explanation of symbols]

 Reference Signs List A crushing washing device B pressure dehydrating device C transfer duct 1 casing 2 press plate 3 roller 4 nozzle 5 nozzle 6 rinse washing tank 61 dam plate 62 washing water supply pipe 7 discharge chute

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Iwao Fujii 3-1-1, Shimosakabe, Amagasaki-shi, Hyogo Nikkachi Electric Industrial Co., Ltd. (72) Inventor Kohei Maeda 3--11, Shimosakabe, Amagasaki-shi, Hyogo No. 1 Inside Hitachi Kiden Kogyo Co., Ltd. (56) References JP-A-1-139151 (JP, A) JP-A 54-169879 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB Name) B30B 9 / 20,9 / 06 B02C 4 / 12,4 / 28 C02F 11/12

Claims (2)

(57) [Claims] 1. A crushing and washing apparatus comprising a press plate and a roller for crushing uncrushed material in screen residue collected from a sewage treatment plant and introduced into the crushing and washing apparatus is provided in a casing. At the position where the crushed screen residue falls from between the roller and the press plate, a nozzle for spraying washing water toward the screen residue is arranged, and a plunger is moved forward and backward in the cylindrical screen below the nozzle to pressurize the nozzle. A crushing washing dewatering device for screen residue, comprising a dewatering means for dewatering, and a transfer duct provided in the dewatering means. 2. A crushing and washing apparatus comprising a press plate and a roller for crushing uncrushed material in the screen residue collected from a sewage treatment plant and introduced into the crushing and washing apparatus is provided in a casing. At the position where the crushed screen residue falls from between the roller and the press plate, a nozzle for spraying washing water toward the screen residue is arranged, and a plunger is moved forward and backward in the cylindrical screen below the nozzle to pressurize the nozzle. Dewatering means for dewatering, comprising a rinse tank for rinsing the dewatering means, and a cleaning water supply pipe for supplying cleaning water to the rinse tank,
An apparatus for crushing, washing and dewatering screen residue, comprising a dehydrating means for pressurizing and dehydrating the screen residue flowing over the rinsing tank, and a conveying duct connected to the dewatering means.