JPS60122012A - Sludge collecting apparatus - Google Patents

Abstract

PURPOSE:To reduce cost for daily work by allowing a hollow central shaft of a sludge scraper to have a function of an air-lift pump. CONSTITUTION:A central shaft 11 of a sludge scraper is made hollow and an air blowing pipe 16 is provided to the bottom of the central shaft 11. When the central shaft 11 is driven, sludge is discharged from an air/sludge discharging port 7 provided in the radial direction of the central shaft. The sludge is conducted through guides 8, 12 to a sludge receiver 9 and then transported to a predetermined part through a sludge discharging pipe 10. The device serves as a sludge collecting device and also as a sludge lifting pump, therefore, installation of conventional sludge transporting pump is no more necessary, and the cost is reduced as compared to conventional system.

Description

[Detailed Description of the Invention] There is a staining device (also called a sludge scraper) that collects the sludge settled in a circular method pond at the center of the sediment surface. Its only function is to collect the sludge deposited in a circular plane in the center and transfer it to the sludge pool. A diagram of a conventional dirt collection device 61 will be explained. When a conventional staining and pollution equipment is manufactured using an all-steel pipe with a 1° axis, a blind VC is used to prevent sludge from entering from the lower end. Also axis 1
゛ has a fixed raking blade mounting arm 2゜,
The scraping grade mounting arm 2'L/c is the scraping plate 4'
The sludge at the bottom of the tank 5'' is collected in the center by rotating the shaft 1'' to the left.

÷PL The collected sludge flows into the sludge tank 6' through the sludge withdrawal pipe 5' attached to the bottom of the tank 3', and is transferred from the sludge tank 6' to the required location by the sludge transfer pump 7'. .

Does the present invention reduce costs in daily design work? It was invented for this purpose.

Is the present invention the central axis of the sludge scraper? It is made hollow, and all air supply pipes are arranged below the same central shaft, and a sludge and air discharge port is provided in the radial direction of the same central shaft.A guide purple membrane is placed near the same discharge port, and the entire sludge volume is installed below it. , relates to a sludge collection device characterized in that the sludge discharge pipe is connected to the sludge receiver.

It is intended to provide a complete collection device with a sludge scraper center shaft and a completely hollow air lift pump, and can be applied to nine coal usage ponds.

An embodiment of the staining apparatus of the present invention will be described with reference to FIG. 2. FIG. 2 shows a schematic drawing of the lahar side of the collecting device of the present invention. The central shaft 1 of the upper staining device is connected to the shaft of a drive device (usually an electric motor with a speed reducer or a speed reducer and a motor connected by a full conduction device), and 2 is usually made of round steel. (In some cases, a steel pipe is used.) The lower N concentrator center shaft 11 is a hollow steel pipe, and is connected to the upper center shaft 1 by a flange 2T, a packing 5I, and a flange 4. These flanges 2,
4L packing 3 and port for flange 5. It is fixed with nut 6.

Here, the packing 3 needs to be a blind packing metal so that the sludge in the lower central shaft 11 does not migrate into the upper central shaft 1. However, if the upper center shaft 1 is made of round steel or the like instead of a hollow pipe, the packing 3 is not necessary. Also flange 2.4
If the sludge does not have the function of passing sludge, a seal is not necessary. The upper part of the lower central axis 11 (general VC is above the normal water level of the sedimentation tank, and the front part of the sedimentation tank is an aeration tank,
If it is a mixing tank and the process is a natural flow to a sedimentation pond, the normal water level of the aeration tank and mixing tank is V'%l (upper) V
Ca lower center shaft 11 inside? The discharge lower is open so that all the sludge that passes through and rises can be taken out. The shape of the discharge lowers can be arbitrarily selected depending on the amount of sludge, etc., and the number and size of the discharge lowers can be changed as long as the stress strength such as torsion and shear of the lower central shaft 11 is maintained. You can choose. A guide 12 is attached to the lower central shaft 11Vc of the main discharge lower to prevent the sludge from dripping when discharging the sludge.

On the other hand, an upper guide 8 is provided to prevent the upper part 1/Ci sludge of the discharge port 7 from scattering to the outside. These guides 8.12
It is desirable that the entire circumference be the same as ij, but it is not necessary to cover the entire circumference as long as the above-mentioned objective 1 effect can be achieved. The sludge and the like that have passed through the entire lower central shaft 11 and ascended are ejected from the discharge lower and guided to the sludge receiver 9 from between the guides 8 and 12. The sludge receiver 9 is fixed in a V-shape over the entire circumference. A sludge discharge pipe 10 is attached to the bottom VC of the sludge receiver 9, and the sludge discharge pipe 10 is attached to the sludge.
It is transported to the desired location 1 via the route. Sludge discharge pipes 10111 (four sloped pipes are provided at the bottom of the sludge receiver 9).

On the other hand, the upper part lc of the sludge receiver 9 (if the sludge is likely to scatter, the lid and other parts may be completely attached). The lower end of the lower central shaft 11 is cut perpendicular to the lower central axis for sludge suction, and an air blowing pipe 16 is inserted into the center of this lower end. The insertion length of the air blowing pipe is 2 LIU.
% or more is desirable. (however.

These must be determined using normal air lift pump calculations. ) Compressed air from a separate air compressor or the like is supplied to the air blowing pipe 16, and the mixture becomes a mixture of sludge and air, which moves completely upward within the central axis 11 of the sludge, where the density is light. Compressed air density, pressure, etc. are determined by the sludge volume and lift height, and therefore the diameter of the air blowing pipe 16 is also determined by these, but from past experience, clogging due to scale etc.
It is redundant to decide the pipe diameter by taking into consideration the packing V, etc., depending on the properties of the sludge being handled. Also, is there sludge in the lower central shaft 11? A raking blade 14 for raking to the center is attached via a raking plate attachment arm 15. On the other hand, power mud storage v
A breaker blade 15 for the purpose of completely preventing assimilation of the 17vc accumulated sludge needs to be attached to the entire lower central shaft 11, and the breaker blade 15 can constantly pump up sludge with a high concentration.

The operation of the present invention will be explained. Central shaft 1 of sludge scraper
1 is completely hollow, and all air blowing pipes 16 are disposed at the bottom of the central shaft 1-1, and by rotating the central shaft 11 times, all of the sludge is discharged from the air and sludge discharge lower in the radial direction of the hollow shaft. ,
The discharge lower Vc guide 12, the sludge receiver 9 and the discharge pipe 1
It is a collection device with 0 total chaos.

The present invention has the above configuration and has the following secondary effects.

(1) The center shaft of the sludge collector is completely hollow, and the conventional sludge transfer pump is not used at all.

fire dependence (2) Collection device and sewage pump? Also serves as.

(5) Cost reduction can be achieved compared to conventional equipment.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a conventional collecting device, and FIG. 2 is a schematic diagram of an embodiment of the collecting device of the present invention. 11... Central shaft, 16... Air blowing pipe, 7... Sludge and air outlet, 8.12...
····guide. 9...Sludge receiver, 10...Discharge pipe. Patent applicant: Mitsubishi Heavy Industries, Ltd. sub-agent, patent attorney Kazuo Nakajima γ; 1.1

Claims (1)

[Claims] The central shaft of the sludge scraper is completely hollow, and all air supply pipes are installed at the bottom of the central shaft.Sludge and air discharge ports are provided in the radial direction of the central shaft, and all stages of guides are installed near the discharge port. This sludge collection device is characterized by having a full sludge receiver below and a sludge discharge pipe connected to the sludge receiver.