JPH0761404B2 - Device for removing suspended matter of light specific gravity in liquid - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension of a light specific gravity in a liquid for removing suspended matter in the liquid while sequentially pushing up suspended matter having a light specific gravity floating in the liquid from the lower layer to the upper layer with a swirling flow. The present invention relates to an object removing device.

[0002]

2. Description of the Related Art A conventional automatic filter is a method in which a disc-shaped or cylindrical wire mesh filter is rotated in filth so that suspended matter in the filth is attached to the wire mesh filter and removed, or floating in filth. There is a method in which an object is once separated into a concentrated solution containing clean water and suspended matter by a vortex flow, and only this concentrated solution is further guided to a suspended matter separator, and in this suspended matter separator, it is separated into suspended matter and clean water. is there. Also, Jikkou Sho 35-18276 "Water
Like a cutting device,
Then, in the tank equipped with a drainage pipe at the bottom, a small hole is
A vertical conical tube having
Some mouths are in communication with the throat and supply pipe
However, it uses pressurized water as a means of transporting solids .
It is something. In addition, Japanese Examined Patent Publication No. 1-12535 "Fibrous filling
"Consolidation of filler and removal of suspended solids"
The upper nozzle at the suspended material location to remove material
Swirling flow is forcibly and intermittently supplied to remove suspended matter.
Things exist.

[0003]

According to the conventional apparatus for removing suspended matter having a light specific gravity in a liquid, a spray provided at another position by rotating the filter for removing suspended matter such as fluff adhering to the wire mesh filter. Or rotating brush (or roll)
A mechanical power facility for cleaning the filter as described above is required, and the facility tends to be large and expensive, and therefore a location for installing the power facility is also required. In addition, since the wire mesh filter is cleaned in the air, the filter tends to be imperfectly cleaned, and regular maintenance and inspection are required. No. 35-18276 "Water
Like a cutting device,
Pressure water as a means of transporting solids such as coal.
Is used. Inside the tank with a drainage pipe at the bottom
A vertical conical tube with small holes on the entire circumference is installed on the
The upper and lower openings of the conical tube communicate with the throat and the supply tube, respectively.
It looks like the structure, but it looks like this
It has a drain pipe at the bottom like a drainer.
Collect the suspended matter on the top of the inner cylinder of the suspended matter removal tank.
It is impossible to remove the suspended matter of light specific gravity in the liquid like the present invention.
It has the drawback that it cannot be used as a storage device. Furthermore,
No. 12535 "Consolidation of fibrous packing and adhered suspended matter
Suspension method to remove suspended substances
Intermittent forced swirl flow from upper nozzle in quality position
The medium filter from the bottom of the cylindrical filter
Clogging has an unavoidable drawback.

[0004]

[Means for Solving the Problems] In order to achieve the above object, an inner layer of a suspended matter removing tank in which an inner cylinder and an outer cylinder are partitioned by disposing a porous cylindrical filter in the center of the tank. The end of the liquid inflow pipe is opened in the lower part, and the filtrate outlet is provided in the upper part of the outer cylinder of the floating substance removal tank, and the sludge discharge pipe is provided in the top of the inner cylinder of the floating substance removal tank. By forcibly imparting a swirling motion to the liquid flowing in from the end of the inflow pipe, suspended matter having a light specific gravity floating in the liquid is discharged from the sludge discharge pipe. In addition, by disposing a compressed air pipe in a position close to the porous cylindrical filter and intermittently ejecting compressed air, cleaning of the filter can be made more efficient.

[0005]

[Operation] While the liquid flowing into the lower part of the inner tube of the suspended matter removal tank is swirled (vortex flow), the clean water is filtered from the lower layer to the upper layer one by one, and the clean water is filtered by a filter such as a wire mesh and discharged from the outer tube and the outer tube. The filtrate is discharged through the tube. on the other hand,
The suspended matter such as fluff that is blocked by the wire netting filter and has a light specific gravity in the inner cylinder is also removed by the swirl flow of the inner cylinder such as the fluff that adheres to the wire mesh filter and is gradually pushed up by the swirl flow and finally concentrated. The sludge overflows from the top of the inner cylinder and is discharged through the sludge discharge pipe. In addition, it is possible to more effectively remove suspended matter such as fluffs that are in close contact with the wire mesh filter by the impact of compressed air that is intermittently ejected through a compressed air pipe provided in a position close to the porous cylindrical filter. There is something.

[0006]

EXAMPLES Examples will be described with reference to the drawings. 1 and 2, by disposing the porous cylindrical filter 2 in the central portion of the suspended solid removing tank 1, the inner cylinder 3 and the outer cylinder 4 are arranged.
And are divided. Here the porous cylindrical filter 2 is 1
It is also possible to use a wire mesh filter of about 20 mesh or a mesh metal porous cylinder having a porosity of about the same. Although the porous cylindrical filter 2 can be used as a single piece as shown in FIGS. 1 and 2, if it is composed of a plurality of porous cylindrical filters 2a and 2b as shown in FIG. By moving the filter slightly, the porosity of the filter can be changed at any time. The end of the liquid inflow pipe 5 is opened at the lower part of the inner layer of the suspended matter removing tank.
One end of the liquid inflow pipe 5 is communicated with the lower portion of the chemical permeation tank 6 in the pretreatment process in the textile dyeing industry, for example. A clean water discharge port 7 is provided above the outer cylinder 4 of the suspended matter removal tank, and a sludge discharge pipe 8 is provided at the top of the inner cylinder 3 of the suspended matter removal tank. Since the pressurized liquid flowing in from the liquid inflow pipe 5 is forcibly imparted with a swirling motion as indicated by an arrow, a suspended matter having a relatively light specific gravity such as fluff floating in the liquid in the inner cylinder 3 9 is discharged from the sludge discharge pipe 8 by overflowing it. The concentrated sludge that has overflowed is further dehydrated by a squeezing device (not shown). The upper end liquid level of the inner cylinder 3 is positioned higher than the water level 12 of the clean water discharge port 7 due to the resistance of the inner wall 13 and the porous cylindrical filter 2. In addition, 14 is an outer wall.

Since the porous cylindrical filter 2 has a self-cleaning action due to the constant rotation of the liquid, the porous cylindrical filter 2 is hardly clogged, but it gradually becomes porous by long-term use. Floating matter may adhere to the cylindrical filter 2, and this improves the filtration efficiency. Therefore, the compressed air pipe 10 is arranged in a position close to the porous cylindrical filter, and compressed air is intermittently ejected to filter the filter. The cleaning of can be made more efficient. In order to obtain a swirling flow in the liquid in the inner cylinder 3, in the above embodiment, the water level 11 of the inflow side, that is, the chemical permeation tank 6 is set.
And the outflow side, that is, the liquid level difference (A) of the water level 12 of the clean water discharge port 7 is used, but the inflow water pressure to the liquid inflow pipe 5 side without using the liquid level difference (A) as described above. A delivery pump can also be provided.

[0008]

According to the apparatus for removing suspended matter having a light specific gravity in a liquid according to the first aspect of the invention, a suspended cylindrical body is separated by arranging a porous cylindrical filter in the center of the tank to remove suspended matter. An end of the liquid inflow pipe is opened in the lower part of the inner layer of the tank, a filtrate outlet is provided in the upper part of the outer cylinder of the suspended solids removal tank, and a sludge discharge pipe is provided at the top of the inner cylinder of the suspended solids removal tank. ,
Since a swirl motion is forcibly imparted to the liquid flowing in from the end of the liquid inflow pipe, suspended matter having a light specific gravity floating in the liquid is discharged from the sludge discharge pipe, so that as a whole, It is possible to provide a compact device for removing suspended matter of light specific gravity in liquid. Further, the porous cylindrical filter requires almost no maintenance or inspection due to the self-cleaning action by the swirling motion of the liquid in all the processes from the lower part to the upper part . Furthermore, since the suspended matter of light specific gravity in the liquid is removed by the pressure flow of the liquid, power equipment is completely unnecessary and it can be provided at a very low cost, especially in the textile dyeing industry. Removal of fluffy light specific gravity suspended matter falling into the tank, removal of light specific gravity suspended matter in factory wastewater, etc.
It can be used in various industrial fields. Also, claim 2
In the device for removing suspended solids of light specific gravity in the liquid, a compressed air pipe is installed in a position close to the porous cylindrical filter, and compressed air is ejected intermittently. The clogging of the filter is also immediately improved.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a device for removing suspended matter of light specific gravity in a liquid.

FIG. 2 is a partially enlarged cross-sectional view of a device for removing suspended matter of light specific gravity in a liquid.

3 is a sectional view taken along line AA in FIG.

FIG. 4 is a sectional view of a porous cylindrical filter having a plurality of layers.

[Explanation of symbols]

 1. ． Floating matter removal tank 2. ． Porous cylindrical filter 3. ． Inner cylinder 4. ． Outer cylinder 5. ． Liquid inflow pipe 6. ． Drug infiltration tank 7. ． Clean water outlet pipe 8. ． Sludge discharge pipe 9. ． Floating matter 10. Compressed air pipe 11. Water level 12. Water level

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication location B01D 29/92 29/94 C02F 1/24 A 1/38 B01D 29/42 501 C 510 520

Claims (2)

[Claims] 1. An end portion of a liquid inflow pipe is opened at a lower portion of an inner layer of a suspended matter removing tank, which is formed by partitioning an inner cylinder and an outer cylinder by arranging a porous cylindrical filter in a central portion of the tank, and the floating is performed. A filtrate outlet is provided on the top of the outer cylinder of the substance removal tank,
A sludge discharge pipe is provided at the top of the inner cylinder of the suspended matter removal tank, and a suspended matter having a light specific gravity floating in the liquid is forced by forcibly imparting a swirling motion to the liquid flowing in from the end of the liquid inflow pipe. The sludge discharge pipe discharges the suspended matter of light specific gravity in the liquid. 2. The removal of suspended matter of light specific gravity in the liquid according to claim 1, wherein a compressed air pipe is arranged at a position close to the porous cylindrical filter, and compressed air is ejected intermittently. apparatus.