JP3336104B2 - Sludge discharge device in tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a device for discharging sludge accumulated in a sedimentation tank provided in a water treatment facility for wastewater used for dust collection and the like.

[0002]

2. Description of the Related Art Wastewater used for cooling, washing, dust collection and the like in a factory is often cleaned by a water treatment facility and reused. Such a water treatment facility is usually provided with various sedimentation tanks to sediment dust and the like in wastewater. Since such a sediment is gradually accumulated in the sedimentation tank as sludge, it is necessary to remove the sludge. In this operation, a pump is generally used, and the sludge to be deposited is formed into a slurry to be removed by suction.

[0003] Taking water treatment equipment in an iron making plant as an example, this operation is conventionally performed by suspending a sand pump in a tank with a little water remaining after draining, and immersing the sludge on the surface of sludge. After that, high-pressure water is sprayed from the upper part of the tank to the vicinity of the sand pump, and the sludge rises and is slurried by the sand pump. He works with a hose connected to an external vacuum car, enters the tank, and applies the hose tip to sludge to suck it.

[0004] In some cases, a submerged traveling sludge discharging device is used for sludge discharging. This device is provided with a rake device and a screw device in an infinite orbital vehicle, and while running on the sludge, the screw device collects the sludge into a suction port in front of the sludge and removes it by suction.

[0005]

In the conventional method using a sand pump, it takes time and effort to slurry the sludge with high-pressure water, and the capacity of the sand pump decreases as the amount of sludge accumulated increases. Partly, it was very troublesome.
In addition, sludge at a location away from the sand pump cannot be removed, and requires human labor.Moreover, since this operation requires the worker to move in the tank with a hose, the burden on the operator is reduced. There was a problem of becoming larger.

[0006] Also, in the case of using a submersible sludge system,
Since the sludge is soared by the rotation of the screw, the effect of scraping the sludge is reduced, and the water in the tank is also polluted,
There was a problem that it was difficult to confirm the work status. SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a device for efficiently sucking and removing sludge deposited in a tank.

[0007]

[0008]

A discharge device according to the present invention comprises a traveling vehicle running on sludge deposited in a tank, a hose pump provided on the traveling vehicle for sucking sludge, and a hose pump connected to a motor. Consists of a suction port with a vertically driven screw that is driven to rotate, and a discharge hose connected to a hose pump.
It is characterized in that it can be turned around a vertical axis . According to the present device, the sludge is stirred and fluidized by the rotational driving of the screw, so that the suction is easily performed. If the screw is made a certain length, sludge will be spirally fed and will be lifted above the suction port,
Suction is promoted. In addition, if the traveling vehicle can be remotely controlled from outside the tank, the drainage work can be performed safely without any person. In addition, the hose pump
By allowing both to pivot around the vertical axis,
Sludge on the front, rear, left and right of the traveling vehicle can be removed by suction.
You.

The traveling vehicle used in the present apparatus is preferably a rubber crawler. This is because, in the case of a wheel, the rubber crawler can easily run on sludge even if there is some unevenness on the sludge, whereas the wheel easily slips on the mud. As shown in FIG. 1, the hose pump has a special rubber tube 1 disposed in a U-shape in a housing 2 and two extrusion rollers 3 provided inside, and the extrusion roller 3 is rotated along the tube 1. By driving, the restoration force of the crushed tube and the guide roller 4 sandwiching the tube 1 are forcibly restored, thereby generating a strong vacuum suction force to suck in the sludge and continuously flowing the sludge in the rotation direction of the extrusion roller 3. It is intended to be sent out.

In another device, the hose pump of the above-described device is supported together with the suction port so as to be tiltable up and down around a horizontal axis so that the suction port can be lowered by a cylinder. By lowering the suction port, the suction port can be pushed into the sludge to an appropriate depth, and by lifting the suction port, movement can be performed smoothly and quickly.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in detail in FIG. 3, a rubber roller 11 remotely controlled from the outside of a tank has a base 1 rotatable around a vertical axis by a hydraulic motor 12.
3 is supported, and a tower-shaped main body 15 having a hose pump 14 is supported by a horizontal shaft 16 so as to be able to tilt up and down.

The hose pump 14 has an enlarged suction port 18 at the end of the bent portion of the suction pipe 17.
Is provided with a contact (not shown) for sludge exploration for detecting sludge 21 deposited in the tank 19 at the outer end, and a screw 22 partially protruding from the suction port 18 and reaching the bent portion. The shaft 23 is driven to rotate by a hydraulic motor 24 fixed to the bent portion.

The suction pipe 17 is connected to the base 13 by a hydraulic cylinder 25, and can be lowered together with the main body 15 and the suction port 18 by the operation of the hydraulic cylinder 25. The elevation angle can be detected by a detector (not shown) provided above the rubber roller. The hose pump 14 also has a discharge hose 26, which is connected to a vacuum wheel 27 outside the tank 19 as shown in FIG. The discharge capability of the hose pump 14 is supplemented so that mud can be discharged without any trouble even when the discharge hose 26 is long.

In the figure, reference numeral 28 denotes a hydraulic pump unit,
Reference numeral 29 denotes a control panel which indicates an elevation angle and whether or not the suction port 18 is in contact with the sludge 21 (these indicators are used to predict the risk of damage to the rubber crawler 11, rollover, etc., and to prevent them from occurring. Can be operated by workers,
A hydraulic valve unit 31 is provided on the rubber crawler 11 together with a controller (not shown) for remotely controlling the rubber crawler 11 and an operation unit for performing forward and backward movement and stop of the rubber crawler 11, controlling the hydraulic motor 12 and the hydraulic cylinder 25, and the like. Are connected by a hydraulic hose and a cable 32.

The hole 33 formed at the upper end of the main body 15
Is a hole for hooking the hook of the crane. After the crane is hooked, the rubber crawler 11 is raised and lowered by the crane operation. According to the present apparatus, by pushing the suction port 18 into the sludge, and driving the screw 22 and the hose pump 14, the sludge is fluidized and squeezed upward to be conveyed, without diluting the sludge with water, and The sludge can be efficiently sucked without sowing. In addition, the rubber crawler 11 is run,
Further, by rotating the suction port 18 together with the hose pump 14, it is possible to discharge the sludge in the entire tank, and even if the sludge surface is slightly uneven by lifting the suction port 18, the rubber crawler 11 can be used. Can be smoothly run, and even if there is an obstacle in the tank, sludge around the obstacle can be discharged. Further, the suction port can be pushed into the sludge to an appropriate depth.

[0016]

The present invention is configured as described above and has the following effects. According to the apparatus of claim 1, sludge in the tank can be discharged by running the traveling vehicle in the tank, and the sludge is diluted with water by fluidizing the sludge with a screw. Can be discharged efficiently without having to perform
Thereby, mud in front, rear, left and right of the traveling vehicle can be performed .

If the traveling vehicle can be remotely controlled from outside the tank as in the apparatus according to the second aspect, the drainage work can be performed unmanned and safely.

If the rubber crawler is used for the traveling vehicle as in the device according to the second aspect , the vehicle can be smoothly moved without getting stuck in the mud. In the device according to the third aspect , by lifting the suction port during traveling, even if the surface of the sludge is slightly uneven, it is possible to smoothly travel without being caught by the suction port, and obstacles can be prevented. Even if there is, the sludge near the obstacle can be discharged by avoiding it by elevating.

[Brief description of the drawings]

FIG. 1 is a plan view of a hose pump.

FIG. 2 is a side view of the device according to the present invention.

FIG. 3 is an enlarged side view of a main part of the device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ... Rubber crawler 12 ... Hydraulic motor 14 ... Hose pump 18 ... Suction port 19 ... Tank 21 ... Sludge 22 ... Screw 24 ... Hydraulic motor 25 ... Hydraulic Cylinder 27 ・ ・ ・ Vacuum car

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masahiro Mori 1-36-1 Nakadori, Kure City, Hiroshima Prefecture Inside Nisshin Koki Co., Ltd. (72) Inventor Sawao Oze 1-3-3 Nakadori, Kure City, Hiroshima Prefecture No. 16 Inside Nissin Koki Co., Ltd. (56) References JP-A-2-204535 (JP, A) JP-B-59-660 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , (DB name) E02F 3/88

Claims (4)

(57) [Claims] 1. A traveling vehicle running on sludge deposited in a tank, a hose pump for sucking sludge provided on the traveling vehicle, and a vertical screw connected to the hose pump and driven to rotate by a motor. and a suction port, Ri Na more hose for discharge which is connected to a hose pump, Hosupo
So that the pump can pivot around the vertical axis with the suction port.
Re sludge discharge device in the tank, characterized in Rukoto. 2. A vehicle is traveling sludge discharge device for a tank according to claim 1, wherein the remote control from Sogaibu. 3. A traveling vehicle sludge discharge device in the vessel of claim 1 wherein the rubber crawler. 4. A hose pump is rotatably supported tiltably vertically about a horizontal axis, inlet sludge discharge device for a tank according to claim 1, wherein the allow elevation by cylinder.