JPS5939448Y2 - "Filtration" device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a filtration device used for filtering liquids such as sludge and human waste to remove solids and the like.

BACKGROUND OF THE INVENTION For the purpose of filtering liquids containing suspended solids such as sludge and raw human waste, a filtration device having a drum-shaped screen arranged so that its axis is horizontal is used.

In such a filtration device, the liquid to be filtered (raw water) is supplied into a continuously rotating filter, the synovial fluid passes through the screen and flows down, and the scum flows on the inner peripheral surface of the screen as it rotates. Therefore, a rolling mass is formed, and a portion of this mass is taken out from an opening 1 formed at one end (or both ends) of the screen.

The nodules also serve the function of removing clogging of the screen by peeling off the residue adhering to the filter.

Therefore, in order to maintain a stable filtration effect, it is necessary to adjust the amount of raw water supplied so that the amount of sludge supplied and discharged maintain a certain balance. This is a cause that hinders the improvement of processing capacity.

This invention provides a filtration device that can exhibit stable filtration effects even when the throughput is significantly increased, by providing a control rod with spiral protrusions on the circumference to help transfer the residue nodules inside the filter. It is intended to
be.

Hereinafter, one embodiment of this invention will be described in detail with reference to FIGS. 1 to 4.

1 is a drum-shaped screen, which is fixed between disc-shaped end plates.

The screen 1 has a large number of screen pars 2 each having a triangular cross section arranged in series in the axial direction, and one rhombus-shaped screen par 3 is provided at a predetermined interval between them.

One acute end of the screen par 3 protrudes inward.

A nozzle 1 drop 4 at the tip of the raw water supply pipe is inserted inside and above the screen 1.

The nozzle section 4 is configured to supply raw water when the filter section of the screen 1, which rotates in the direction of the arrow about the axis O, is at a position where it passes the maximum point and begins to descend.

Therefore, the supplied raw water is filtered as the screen 1 descends, and the furnace liquid passes through the screen 1 and falls downward, and is discharged from the furnace liquid discharge pipe (not shown).

On the other hand, the residue remains inside the screen 1 and continues to rotate together with the screen 1.

When the screen 1 rotates past the maximum point, it separates from the screen 1 around the control rod to form a lump, and when this lump reaches a certain size, it is pushed out little by little in the axial direction of the control rod due to the influence of gravity. The liquid is discharged from the screen 1 through the inner circumferential surface of the guide body 8.

The guide body 8 is a ring-shaped member provided on one side of the screen 1, and is open at the center.

A control rod 6 extending in a direction parallel to the axis of the screen 1 is inserted into the screen 1 from the guide body 8 side.

The control rod 6 includes a cylindrical roller 11 rotatably supported by the shirt l-9 via a bearing 10.

Then, the bracket I.1 fixed to the housing lla
2 at a predetermined position via a mounting plate 13.

What is the bracket I/12 mounting plate 13? The long hole 1 of the mounting plate 13
4 and are connected by bolts 15 so that they can be tightened.

Thus, by loosening the bolts 15, the position of the control rod 6 relative to the screen 1 can be changed.

A protrusion 7 is spirally provided on the surface of the roller 11.

The protrusion 7 may be formed by winding a wire around the roller 11.

Since the control rod 6 is the core of the transfer of the scum, it is better to make one rotation, and it may be driven separately.

A scraper is also provided within the screen 1 as shown in FIG.

This scraper is provided with a rubber piece 17 at the tip of a support member 16, and maintains a clearance of, for example, 5 mm or less between the rubber piece 17 and the protrusion of the screener 3.

Now, the raw water supplied into screen 1 as mentioned above is
The residue filtered by the screen 1 forms a lump and rolls around, and a part of the residue is discharged from the guide body 8.

In this case, the inwardly projecting protrusion of the screener 3 assists in the transfer of the sludge, thereby increasing the filtration area of the screen, increasing the throughput and improving the sludge recovery rate.

The residue formed into a nodule shape is a spiral control rod 6.
is moved smoothly in the axial direction.

Therefore, it is possible to increase the length of the drum itself, which has been difficult until now.

Moreover, the spiral protrusion 7 promotes simultaneous rotation of the roll 11, and promotes the transfer of baby boomers.

By the way, when a protrusion is formed on the inner side as described above, transfer is improved, but on the other hand, residue adheres to the protrusion and the peeling condition becomes poor.

The scraper prevents this drawback and prevents the rise of sewage filth.

Moreover, it becomes easy to collect the residue on the control rod 6.

As described above, according to this invention, a rotatable control rod with spiral protrusions is provided inside the screen to improve transfer, so the transfer collection effect is high and transfer can be performed even with the same size screen. Since it is possible to increase the amount of residue aggregates, the discharge capacity and the self-cleaning capacity of the screen can be increased, making it possible to process large quantities with stable filtration effects.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a filtration device according to an embodiment of the invention, FIG. 2 is a partially cutaway front view of the main parts thereof, and FIG.
Its side view, FIG. 4, is a side view of another embodiment of the main part. 1...Screen, 2, 3...Screen par 4...Nozzle part, 6...Control rod, 7...Protrusion, 8... Guide body, 16
...Supporting material.

Claims (1)

[Scope of utility model registration request] A drum with a screen on its circumference is arranged so that its axis is horizontal, and the liquid to be filtered is supplied into the drum while rotating this drum in one direction about its axis. is passed through the above screen, and the residue is I-1.
In a device designed to eliminate overflow from the inside of the drum L through an opening at the end thereof, the drum L has a circular spiral protrusion parallel to its axis, and a control device that can rotate at the same time. The control rod is provided with a control rod whose screen is connected to the
A filtration device characterized in that the filtration device is located at a position apart from the screen near the position where the J-roll passes the lowest point and begins to rise, and serves as the core of the transfer of the nodules formed by the residue.