JPH0634887B2 - Batch type filter - Google Patents

Description

TECHNICAL FIELD The present invention relates to a batch type passing device. More specifically, the present invention relates to a batch type passing device that can automatically discharge slag and easily replace materials.

[Problems to be Solved by Prior Art and Invention]

Separation of the solid and liquid of the suspension is one of mechanical separation operations that have extremely wide application and importance in chemical plants and various wastewater treatments, together with sedimentation or centrifugation. A large number of various types of overcurrent devices have been developed according to the conditions.

These passers are roughly classified into a suction (vacuum) pass and a pressurization pass, depending on the pass type, and further divided into a batch type and a continuous type. In addition, various types of overpass devices have been developed in accordance with these systems, and overoperations suitable for the characteristics of each type are performed.

The selection of the excess device is made in consideration of various characteristics such as the over-characteristics of the suspension, the treatment amount, the treatment condition, the treatment purpose and the like.

The continuous type is more advantageous than the batch type in order to effectively use the excess area, which can be said from the viewpoint of operation and process control, but in some cases, the batch type excess device is selected. In some cases it may be preferable.

There are two types of batch type passing devices, a pressurizing type and a suction type. When an overspeed is required, a pressurizing type is preferable for an incompressible slag, but it is also necessary to consider a pressurizing type material and the like.

Therefore, which one should be selected is appropriately selected by performing a comprehensive evaluation on each operation, maintenance, economy and the like.

Conventionally, this batch type passing device is a pressure type and a suction type, for example, the suspension is passed in a passing tank having a flat bottom passing surface,
An apparatus for separating solid and liquid is known, and the structure is simple and can be manufactured at a relatively low cost, but it was difficult to automatically scrape and / or discharge the slag after passing it. That is, the work is mainly performed manually, and the work is complicated and requires a lot of labor.

For that reason, the application of an over-apparatus that enables to automatically scrape and / or discharge the slag to save labor, and to safely and hygienically pass the patent (patent application) 59-185360).

However, it is inconvenient to replace the cloth by removing the arm attached to the rotating shaft and the scrubbing plate, and it is inconvenient that a person must replace the material inside the excess tank. there were.

An object of the present invention is to provide a batch type passing device that can easily replace a material.

[Means for solving problems]

The inventors of the present invention have made earnest studies and removed the lower upper surface (3) of the upper tank (1) so that the material can be easily replaced and the present invention has been completed.

That is, according to the present invention, the suction or pressure excess tank (1) has a bottom surface (2) provided with a surface (3) having an arcuate cross section, and a flange portion (21) at the upper end thereof has a flange of the tank. It is fastened to the part (21), and the slag discharge port (15) is attached to one end of the lower part of the excess tank (1).
The slag accumulated in the excess tank (1) is vertically cut through the excess tank, and the slag scraping plate (13) is attached to the tip of the slag at a predetermined interval and at an angle such that the slag is pushed out to the discharge port. A rotatable shaft (12) is provided, and after suction or overpressurization, the rotating shaft (12) is driven to scrub the slag (13).
It is a batch-type passing device having a configuration in which it is scraped off by and is discharged while being sent in the direction of the discharge port.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.

FIG. 1 is a perspective view of an excess tank portion, which is a feature of the present invention, FIG. 2 is a partially cutaway front view of a suction type excess device, FIG. 3 is a right side view of the same part notched portion of the device, FIG. 4 is a left side view of the same device with a cutaway portion thereof, and FIG. 5 is a front view of the pressure type passing device with a cutaway portion thereof.

In FIGS. 2 to 5, (1) is an over-passage in which a suspension (A) in which solid and liquid are mixed, for example, a slag is in the form of particles and which is less sticky is passed. The bottom surface (2) of the excess tank (1) is formed in an arcuate cross section such as a semi-cylindrical shape.
An overpass (3) is provided along (2). The surface (3)
Although the configuration of the above varies depending on the type of the suspension (A), it is used, for example, by laying a cloth on a perforated plate and pressing the cloth with a wire net or a pressing frame. In addition, a precoat material (such as a clay substance) may be stretched on the porous plate prior to overheating. Further, the upper surface itself may be formed of a porous body.

One piece of material may be attached to the entire surface (3), but it may be divided into several pieces and attached.

(4) is a suspension inlet provided at an appropriate position on the top of the excess tank (1), and the suspension (A) continuously or intermittently introduced from the inlet (5) is an inlet pipe ( It is introduced into the excess tank (1) from the inflow port (4) through 6). (7) is a suction part formed between the bottom surface (2) and the oversurface (3) in the suction type passing device, and a liquid outlet (at a suitable location on the bottom surface (2) ( 8)
And, through the outflow pipe (9), it is sucked by a suction pump (not shown) into a depressurized state, and the suspension in the over tank (1)
(A) is sucked, and the liquid (B) passes through the liquid outlet (8) and the outflow pipe (9) and flows out from the outlet (10).

In the pressurizing type over device, (23) in FIG.
A liquid outflow portion provided between (2) and the oversurface (3),
Gas compressed by a pressurizer (not shown) is fed through the pressurizing port (22), and the suspension (A) in the excess tank (1) is overpressurized.
The liquid (B) flows out from the outlet (10).

In the case of the pressurizing device, the bottom surface (2) preferably has a gentle slope toward the outlet (10).

On the other hand, the slag (C) is stored on the upper surface (3). (11) is the slag (C) accumulated on the upper surface (3) in the over tank (1)
(1) It is a slag scraping device for scraping to the outside, and an arm (14) having a scrap scraping plate (13) that can be removed by a screw or the like is provided at the tip of the rotatable shaft (12) as appropriate. Is configured. The arm (14) rotates the shaft (12) to rotate the scrap scraping plate.
Circular loci drawn by (13) on the oversurface (3) are provided at intervals so that the entire surface of the oversurface (3) can be scraped off, and are required at positions symmetrical about the axis (12). A large number can be installed.
In addition, the slag scraper (C) is sent to the slag discharge port (15) which can be opened and closed by an opening / closing lid or the like provided below the excess tank (1) on the excess surface (3). The plate (13) is attached at an angle.

The shape and size of the scrubbing plate (13) is the same as the excess tank (1).
Although it may be arbitrarily determined according to the size of the surface and the oversurface (3), it is preferable that the shape and size are such that the contact with the oversurface (3) is appropriate. Further, as a material forming the slag scraping plate (13), an appropriate material corresponding to the suspension (A) to be handled may be used, but preferably a material having an appropriate elasticity is used. Is good.

In the above embodiment, the slag scraping plate (13) has an appropriate number of arms (1
Although explained in the case of being attached to 4), the present invention is not limited to this, and the slag scraping plate (13) may be directly attached to the shaft (12), in which case only the tip of the scraping plate can be scraped. It may be formed as described above. Further, the slag scraping plate (13) may be a rotary blade such as a screw feeder.

In the figure, (16) is a motor for rotating the shaft (12),
(17) is a belt for transmitting the drive of the motor (16) to the shaft (12), (18) is a pulley provided at one end of the shaft (12), and (19) is a state inside the excess tank (1) ( For example, it is a viewing window for checking the accumulated amount of slag (C), etc., and (20) is a supporting leg for supporting the excess tank (1). Reference numeral (21) is a flange portion (21) when the upper tank bottom and the upper tank top having the upper surface (3) are fastened by using fasteners such as bolts and nuts.

[Operation of the invention]

The present invention has the above configuration, and its operation is as follows.
First, in the case of a suction type passing device, first, in the overpass step of passing the suspension (A), first, the suspension (A) is transferred to the over tank (1) which is closed by closing the slag discharge port (15). The suspension (A) flows into the excess tank (1) from the suspension inlet (4) through the inlet pipe (6) by continuously or intermittently flowing in through the inlet (5). It Then, the suction pump is driven to reduce the pressure in the suction section (7), and the solid and liquid of the suspension (A) in the over tank (1) are superposed (3).
Separate at. As the mistake progresses,
(3) If the slag (C) is accumulated on the slag (C) and the slag (C) is accumulated in an amount sufficient to cover the surface (3), the inflow of the suspension (A) is stopped, Then, if necessary, a cleaning liquid for cleaning the slag (C) is introduced from the inlet (5) to wash the slag (C) under suction, and the overstep is completed, and the process proceeds to the next slag discharge step.

Next, in the case of a pressurization type passing device, in the passing step of passing the suspension (A), first, the suspension (A) is put into the over tank (1) which is closed by closing the slag discharge port (15). ) From the inlet (5) by a predetermined amount, the suspension (A) flows through the inflow pipe (6) from the suspension inlet (4) into the excess tank (1). Then, a suspension feeding valve (not shown) is closed. Next, pressurizing port of FIG.
From (22), the slag and the compressed gas are fed into the over tank (1), and the solid and liquid of the suspension (A) are separated on the over surface (3). As the excess progresses, the slag (C) accumulates on the excess surface (3), and the slag (C) covers the excess surface (3). A cleaning liquid for cleaning the slag is introduced from the inlet (5), the slag (C) is washed under pressure and the overstep is finished, and the slag discharge step is carried out. In the slag discharging process of both the suction and pressurizing devices, the lid of the slag discharging port (15) is opened and the motor (16) is driven to drive the belt (1).
It is transmitted to the pulley (18) via 7) and the shaft (12) rotates. By rotating the shaft (12), the slag scraping plate (13) provided on the shaft (12) via the arm (14) scrapes the slag (C), and the slag (C) is discharged from the slag outlet. Send to the (15) and discharge the slag (15)
Discharge from. Scrap (C) in the excess tank (1) due to the scraping
When is almost completely scraped, the motor (16) is stopped to stop the rotation of the shaft (12) to end the slag discharge process, close the slag discharge port (15), and again the above process and the slag discharge process. Repeat.

As this operation is repeated for a long period of time, the material becomes clogged and needs to be replaced.

When replacing the material, remove the fasteners that fasten the upper flange part (21) of the upper surface (3) and the flange part (21) of the excess tank, and separate the upper surface (3) from the excess tank to improve workability. Move to another place and replace the material.

When replacing a part of the material such as damage, if the material is divided into several pieces and attached, it is only necessary to replace the material of the damaged part.

After the replacement, it is carried to the bottom of the excess tank (1), and the upper flange (21) of the excess surface (3) and the flange (21) of the excess tank are joined and fastened with a tightening tool. After that, the above-mentioned over-process and the slag discharge process are repeated.

〔The invention's effect〕

As described above, the present invention fastens the upper part of the over tank and the lower part of the arc-shaped cross section, which fixes the material, on the flange surface,
Since the upper part of the lower part can be removed, the work of material replacement is very easy.

That is, in the conventional replacement of material, a person enters the tank and the arm having the scrubbing plate provided on the rotary shaft is removed,
Since the material was replaced, the work was complicated in a small space, and when there were harmful substances in terms of hygiene, it was by no means a good material replacement method.

However, in the excess tank of the present invention, the lower excess portion can be removed, and the material can be easily replaced in a place with good workability, which is industrially excellent.

[Brief description of drawings]

FIG. 1 is an enlarged perspective view of only the excess tank portion of the present invention. FIG. 2 is a partially cutaway front view of an example of the device of the present invention when performing suction excess, FIG. 3 is a cutaway right side view of the same portion, and FIG. 4 is a left cutaway view of the same portion. FIG. 5 is a partially cutaway front view of an example of the device of the present invention when performing overpressurization. In the figure, each symbol has the following meaning. 1: Over tank, 2: Over tank bottom surface, 3: Over surface, 4: Suspension inlet, 5: Liquid inlet, 6: Inflow pipe, 7: Suction part,
8: Liquid outlet, 9: Outflow pipe, 10: Outlet, 11:
Dust discharging device, 12: Shaft, 13: Dust scraping plate, 14: Arm, 15: Dust discharging port, 16: Motor, 17: Belt, 18: Pulley, 19: Peephole, 20: Support leg,
21: flange part, 22: pressurizing port, 23: liquid outflow part,
A: suspension, B: liquid, C: slag

Claims (1)

[Claims] 1. A suction or pressurization tank (1) has a bottom surface (2) provided with a top surface (3) formed in an arcuate cross section, and a flange portion (21) at the upper end thereof is a flange of the tank. It is fastened to the part (21), the slag discharge port (15) is provided at one end of the lower part of the excess tank (1), the excess tank is longitudinally cut, and the slag is discharged at the tip of the discharge port at a predetermined interval. Slag scraping plate (1
3) is attached to the rotatable shaft (12), and after suction or overpressurization, the rotating shaft (12) is driven and scraped by a scrubbing plate to remove the excess tank (1). A batch type passing device having a structure of discharging accumulated slag while sending it toward a discharge port.