JPH0642925B2 - Sludge treatment equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a sludge treatment device for sludge and the like, and more specifically, it dehydrates mixed sludge of bentonite liquid used in a shield construction method in civil engineering work such as building construction. The present invention relates to an apparatus suitable for separating and treating water and solidified sludge.

[Prior Art] Conventionally, although not particularly shown as this type of device, sludge is allowed to flow and spontaneously settle in a treatment tank provided with a perforated plate, and sludge and water are separated and discarded.

However, this processing device has a problem in that the perforated plate is clogged, the processing work is congested, and the work efficiency is poor.

Therefore, the present inventor previously invented a novel sludge treatment device for the purpose of solving this problem, and applied for a patent (Japanese Patent Application No. 63-
No. 105061).

[Problems to be solved by the invention]

In the sludge treatment device according to Japanese Patent Application No. 63-105061, an appropriate number of cylindrical bodies are vertically fixed in a bottomed treatment tank with their lower end openings facing the openings of the bottom plate of the processing tank. In addition, a cylindrical filter with upper and lower openings is concentrically mounted in these cylindrical bodies, and the upper end of the pipe member integrally connected to the upper end opening has a branch pipe from the sludge delivery main pipe. The lower end of the filter is locked so that it is rotatably externally connected to the flange and the opening of the filter is exposed to the opening of a flange having an opening / closing lid that closes the opening of the lower end of the tubular body. In addition, the pipe member and the treatment tank are provided with a torsional motion transmission mechanism to each filter, and the treatment tank is provided with a drainage means from each tubular body, so that the sludge thrown into the filter is twisted. Giving it water, squeezing the water out into the tubular body and discharging it outside And, and it is configured to discharge the solidified sludge in the filter to the outside.

By the way, in the sludge treatment device, a considerable amount of power is required to give a twisting motion to the cylindrical filter into which the sludge is put, power consumption thereof increases, and not only the operating cost becomes expensive, but also the filter etc. There was a problem that the mechanism of these members was damaged by applying a considerable load to the filter, and the twisting motion was not evenly transmitted to the filter, so that the sludge was not dehydrated efficiently. .

Therefore, as a result of earnest research to solve these problems, the present inventor provided an axial rod in a central axial direction portion in a tubular filter, and rotated the tubular filter integrally with the axial rod. For example, the inventors have found that the twisting motion with respect to the cylindrical filter is performed uniformly and reasonably, and that the workability and the economical efficiency are excellent, and the present invention has been completed.

Therefore, the object of the present invention is to make the twisting motion of the tubular filter uniform and to perform the process smoothly, to effectively and efficiently remove sludge in a short time and to dispose of it easily and easily. The object is to provide a sludge treatment device that can be used.

[Means for solving problems]

In order to achieve this object, the sludge treatment device according to the present invention is such that a plurality of tubular bodies are vertically mounted on a pedestal with their lower end openings facing the openings of the pedestal lower fixing plate. , A cylindrical filter having upper and lower openings is concentrically mounted in these cylindrical bodies, the upper end of which is rotatably connected to a sludge delivery branch pipe, and the sludge outflow opening is formed on the lower end side surface thereof. The lower end of the tubular filter is fixed to the outer periphery of the pipe shaft by surrounding the lower end of the pipe shaft, and the opening of the lower end of the tubular filter is the opening of the flange provided in the lower end opening of the tubular body. A shaft rod that is engaged with the flange so as to face the pipe shaft, and is connected to the lower end axis of the pipe shaft so as to rotate integrally with the pipe shaft and give a twisting motion to the cylindrical filter. The lower end opens and closes the lower end opening of the tubular filter. A pipe shaft that is locked to a shaft rod support portion projecting inside the lid body in a relationship of being inserted and removed as the lid body opens and closes, and further rotates the pipe shaft to transmit a twisting motion to the tubular filter. A rotation mechanism is provided, and drainage means from each tubular body is provided to impart a twisting action to the sludge fed from the sludge delivery branch pipe into the tubular filter through the sludge outflow opening of the pipe shaft. It is characterized in that it is dehydrated and drained to the outside, and at the same time, the solidified sludge in the cylindrical filter is discharged to the outside.

[Work]

In the treatment apparatus configured as above, the sludge pumped by the pump (not shown) through the sludge delivery pipe enters the tubular filter through the branch pipes from the storage tank through the branch pipes. It is thrown in.

Then, the rotational force of the drive source is received to rotate the pipe shaft and the shaft rod integrally therewith, and the cylindrical filter whose upper end is fixed to the pipe shaft is twisted, so that the water content of the sludge is removed from the filter. The sludge in the filter is dewatered and solidified while being squeezed into the tubular body and drained to the outside.

After the operation was stopped, the solidified sludge in the filter was dropped by opening the lid that closed the opening at the lower end of the filter (easily dropped by the return of the twisted filter and the inclined part at the lower end of the filter) and popper ( It is received and discarded by (not shown) or the like.

The lid is closed, sludge is put into the filter, and a series of operations is repeated in the same manner as described above to automatically and continuously perform sludge treatment.

〔Example〕

 Hereinafter, embodiments will be described with reference to the drawings.

FIG. 1 is a schematic explanatory view of the whole, FIG. 2 is a plan explanatory view of a rotating mechanism of a pipe shaft, and FIG. 3 is an enlarged vertical cross-sectional view of a main part with a part omitted. Plate 2 and lower fixing plate 3
In between, a plurality of tubular bodies 4 having upper and lower openings have their upper end openings aligned with the openings of the upper fixing plate 2 and their lower end openings aligned with the openings of the lower fixing plate 3 to fix such as welding. By means of the means, three L-shapes are vertically installed and fixed.

A tubular filter 5 is concentrically mounted in each tubular body 4.

The cylindrical filter 5 is used to squeeze out the water by twisting the sludge put into the cylindrical filter 5, and for example, a strong and flexible cloth is used. The filter 5 is shown in FIG. As shown, the upper and lower ends thereof are open, the upper end thereof is narrowed through the shoulder portion 6, and the lower end portion thereof is thickened through the C-shaped inclined portion 7.

It should be noted that the reason why the inverted V-shaped inclined portion 7 is formed at the lower end of the filter is to allow the dehydrated and solidified sludge inside to be easily dropped and discharged to the outside.

The lower end of the filter 5 is brought into contact with the opening of the double flange 8 welded in such a manner that the lower end of the filter 5 is aligned with the lower end opening of the tubular body 4, and the filter 5 is locked to the flange 8. The band member 10 is fastened and fixed to the outer periphery of the pipe shaft 9 in a state in which 6 is exposed from the upper end of the tubular body 4.

The pipe shaft 9 is closed at its lower end, and two sludge outflow openings 11 that penetrate the pipe shaft 9 are provided on both side surfaces of the lower end, and the opening 11 is located in the shoulder 6 in the filter 5. The upper end of the pipe shaft 9 extends upward through a bearing 13 with a bearing provided on the movable plate 12.

The movable plate 12 is horizontally supported by the shock absorbers 14 standing on the fixed plate 2 at its four corners, and is vertically movable along the guide pins 15 at the four corners.

The upper end opening of the pipe shaft 9 is rotatably externally connected to the lower end of the sludge discharge branch pipe 16.

The sludge delivery branch pipe 16 is provided with a damper 18 operated by a cylinder 17, and sludge pumped and stored in the storage tank 20 via the sludge delivery pipe 19 flows out of the pipe 18 from the branch pipe 16 through the damper 18. It is adapted to be automatically put into the cylindrical filter 5 from the portion 11.

A shaft rod 21 is coaxially welded and connected to the lower end center axis of the pipe shaft 9 in the filter 5, and a flange 22 is inserted into the lower end portion of the shaft rod 21 so that The protruding shaft rod portion is loosely inserted and supported in the vertical blind hole 25 of the shaft rod support portion 24 projecting inside the lid 23 that opens and closes the opening of the double flange 8.
When it is rotated integrally with the drive mechanism described later, this rotation effectively transmits an even twisting motion to the filter 5 rotating integrally therewith, so that the water content of the sludge in the filter 5 is rotated by the twisting motion of the tubular body 4. While being squeezed inside,
The sludge in the filter 5 is appropriately solidified and discharged to the outside by opening the opening by the lid 23.

As the filter 5 shrinks due to twisting, the pipe shaft 9 and the shaft rod 21 are entirely lowered by the lower end of the shaft rod 21 moving downward in the blind blind hole 25 of the pipe, and are also moved upward by returning to the original shape. However, the vertical movement of these members is the sludge delivery branch pipe 1
6 is performed by the vertical movement of the pipe shaft 9 along the vertical axis 6 and the vertical movement of the movable plate 12, and the movement amount thereof is set by adjusting the shock absorber 14.

The blind hole 25 of the lid body 23 has an inclined portion 26 that expands outward at an upper end opening thereof, and can be opened without interfering with the shaft rod 21 when the lid body 23 is opened.

Further, the lid 23 is welded and fixed to a common mounting plate 27 pivotally mounted on the pedestal lower fixing plate 3, and a cylinder 29 arranged on the pedestal fixing plate 28 is provided at a central portion of the lower surface of the mounting plate 27. All the lids 23 are connected and can be opened and closed at the same time by the operation of the cylinder 29.

Of course, the lid 23 may be opened and closed independently of each other.

The pipe shaft 9 and the filter 5 and the shaft rod 21 integrally with the pipe shaft 9
The rotation mechanism for rotating the shaft 5 to transmit the twisting motion to the filter 5 includes a chain wheel 30 fixed above the bearing 13 in each pipe shaft 9, a drive motor 31 arranged on the movable plate 12, A chain wheel 32 of the motor 31 and a chain 33 suspended between three chain wheels 30 are included.

Although the rotating mechanism such as the filter has a structure in which three chain wheels are interlocked with each other as shown in FIG. 2, it goes without saying that each filter may be independently rotated.

The water squeezed out into the tubular bodies 4 by the twisting action of the filter 5 passes through the drain pipes 34 which are communicated with each other at the lower end side surface of each tubular body 4 and in the vicinity of the pedestal lower fixing plate 3. The water is drained to the outside of the gantry 1.

Modifications of the sludge treatment device according to the present invention are possible, and other modifications are shown in FIGS. 4 to 8.

In comparison with the embodiment shown in FIGS. 1 to 3, the modifications shown in FIG. 4 and subsequent drawings are designated by the same reference numerals for substantially the same parts.

In this embodiment, means for facilitating the discharge of sludge from the dehydrated and solidified filter is provided.
In comparison with the embodiment shown in FIG. 3 to FIG. 3, the difference in the configuration and the operational effect will be described.

In FIG. 4 and FIG. 5, a fixing plate 35 is provided slightly above the lower fixing plate 3 of the gantry 1, and between the fixing plate 35 and the upper fixing plate 2, a plurality of cylindrical upper and lower end openings are formed. The body 36 is vertically fixed by welding or the like.

The tubular body 36 has substantially the same function as that of the tubular body 4, but has openings 37, 37 facing each other on both side surfaces of a lower end portion thereof close to the fixing plate 35.

On the fixing plate 35, as shown in FIGS. 5 and 6,
A pair of pressing bodies 38, 38 having a pressing plate 38 having an arcuate cross-section adapted to the openings 37, 37 and moving forward and backward along the guide member 40, and cylinders 41, 41 for operating the pressing bodies 38, 38. Are arranged opposite to each other, and the two pressing bodies 38, 38 are operated by the operation of the cylinders 41, 41, and the respective pressing plates 38 together with the body of the filter 5 through the openings 37, 37. The dewatered and solidified sludge inside is pressed to facilitate its fall and discharge.

Although the lower end of the cylindrical filter 5 faces the opening of the double flange 8 welded to the opening of the pedestal lower fixing plate 3 as in the above-described embodiment, the cylindrical filter 5 is locked to the flange 8. Unlike the above embodiment, the filter portion between the fixed plate 35 and the lower fixed plate 3 is exposed to the outside, and the screw 42 is provided between the shaft portion of the shaft rod 21 and the flange 22 in the exposed filter portion. Therefore, the forward rotation of the screw 42 by the forward rotation of the shaft rod 21 facilitates the filling of the sludge into the filter 5, and the reverse rotation of the screw 42 facilitates the discharge of the dehydrated solidified sludge. .

Further, as shown in FIG. 5, FIG. 7, and FIG. 8, a holding plate 44 for holding a constricted portion of the filter 5 with the inclined portion 7 is provided on the lower base fixing plate 3, and a guide member is provided. A pair of holding bodies 43, 43 moving forward and backward along 45 and cylinders 46, 46 for operating the holding bodies 43, 43.
Are disposed so as to face each other, and when the sludge is filled in the filter 5, the filter is held by the holding plates 44, 4 as shown in FIG.
It is sandwiched by 4 and closed, and after dehydration and solidification treatment, this is released as shown in FIG. 6 to discharge the solidified sludge.

Further, a pan 47 for storing water of sludge squeezed from the filter 5 is provided on the outer periphery of the lower end of the filter 5 on the pedestal lower fixing plate 3, and these pans 4
7 are connected to each other through a drain pipe (not shown), and the stored water is drained to the outside of the gantry 1 through the drain pipe.

〔The invention's effect〕

Thus, according to the device of the present invention, sludge is effectively and effectively dehydrated and separated by the twisting action of each tubular filter and solidified, so that not only the disposal process thereof is simplified, The twisting motion with respect to the filter can be very effectively given by the rotating action of the shaft rod and with a small amount of power, so that the operating cost is low, and the economical burden for implementation is small.

[Brief description of drawings]

FIG. 1 is an overall schematic explanatory view of an example of a sludge treatment device according to the present invention, in which the inside of a tubular body shows only one and the other is omitted. FIG. 2 is a plan explanatory view of a rotating mechanism of a pipe shaft, and FIG. 3 is an enlarged vertical sectional view of an essential part shown with a part omitted.
FIG. 4 is an overall schematic explanatory view showing another example of the present invention. Only one of the inside of the cylindrical body and the pressing body is shown, and the other is omitted. FIG. 5 is an enlarged vertical cross-sectional view of an essential part in the second embodiment shown with a part omitted, FIG. 6 is a plan explanatory view of a pressing body, FIG. 7 is a plan explanatory view of a holding body, and FIG. The figure is a plane explanatory view of the operating state of the holding body. 1 ... Stand 2 ... Upper fixing plate 3 ... Lower fixing plate 4 ... Cylindrical body 5 ... Cylindrical filter 6 ... Double flange 9 ... Pipe shaft 11 ... Sludge outflow opening 12 ... Movable plate 13 ... Bearing 16 ... Sludge delivery branch pipe 21 ... Shaft rod 23 ... Lid

Claims (1)

[Claims] 1. A plurality of cylindrical bodies are vertically mounted on a pedestal, with their lower end openings facing the openings of the pedestal lower fixing plate, and the upper and lower openings of the cylindrical bodies are fixed. A tubular filter is concentrically mounted, the upper end of which is rotatably connected to a sludge delivery branch pipe, and the lower end side surface of which surrounds the lower end of a pipe shaft through which a sludge outflow opening is provided. And is fixed to the outer periphery of the pipe shaft, and the lower end portion of the tubular filter is locked so that the opening portion faces the opening portion of the flange provided at the lower end opening portion of the tubular body. A shaft rod that is integrally rotated with the pipe shaft to give a twisting motion to the tubular filter is connected to the lower end axis of the pipe shaft, and the lower end portion of the shaft rod has a lower end opening of the tubular filter. Opening and closing the lid on the shaft rod support that protrudes inside the lid Accordingly, a pipe shaft rotating mechanism for transmitting the twisting motion to the cylindrical filter by rotating the pipe shaft by engaging and disengaging the pipe shaft is provided, and a drainage means from each cylindrical body is provided. , The sludge discharged from the sludge delivery branch pipe through the sludge outflow opening of the pipe shaft into the cylindrical filter is twisted to be dehydrated and drained to the outside and solidified in the cylindrical filter. A sludge treatment device characterized by discharging sludge to the outside.