KR102462292B1 - Wet type sludge cleaning apparatus incorporating rollers - Google Patents

Abstract

In the foreign material removal apparatus according to the present invention, a sponge roller and a dewatering roller are disposed, and the pressing roller rotates at the same size and at the same speed as the sponge roller, and an uneven portion is formed on its outer surface. Therefore, while minimizing the influence of the surface tension of water, the compression roller receives the sludge from the sponge roller and removes the sludge with the brush, thereby greatly improving the purification efficiency.

Description

Wet type sludge cleaning apparatus incorporating rollers

The present invention relates to a wet foreign material removal apparatus using a roller. More specifically, the present invention relates to a wet foreign material removal device capable of rapidly and efficiently removing sludge from a screen to which foreign substances are attached by applying different surface tensions to a sponge roller and a pressing roller.

Devices for purifying polluted water generated in industrial sites such as factories, mines, and recycling workshops are well known.

For example, Patent No. 10-1556669 discloses the content of purifying treated water by arranging a unit treatment tank installed with vegetation material in multiple stages and spraying water in opposite directions to the upper and lower portions in the unit treatment tank, respectively. . Patent No. 10-1951376 discloses a filtration device in which a space is minimized by mounting a first drum filter and a second drum filter in a main filter, and having a water supply pipe and an overflow pipe.

In the field, a device that filters out foreign substances in the influent water using a nonwoven fabric is widely used. However, in the prior art including the above patent, there is a problem in that a lot of backwash water (contaminated water used for purification) is generated, and the influent water is blocked by the backwash water and the filtration function is stopped.

Applicants have applied for Patent No. 10-1813528 (Screen Device for Wastewater), Patent No. 10-1749320 (Screen Device), Patent No. 10-1668274 (Automatic Separation and Drainage System with Backflow Prevention Unit) and Patent No. 10-1648938 Through a number of patents such as (3-way screen device), we have researched and developed a technology to filter from fine to coarse pollutants and to automatically separate and block a large amount of rainwater.

As shown in FIG. 1 in Patent Application No. 10-2019-010839, filed on August 20, 2019, the applicant has a lower first filtering device (2') and an upper second filtering device (6'). A hybrid filtration device (1') has been proposed. A screen 100' for filtering and transferring foreign substances from contaminated water or influent water is installed across the first and second filtering devices 2' and 6'. The first filtering device 2' includes a water tank 28' and a rotating drum 20' installed inside the water tank 28'. The screen 100' changes direction in the drive unit 4' and returns to the rotating drum 20'. The second filtering device 6' includes an injection device 60' for dropping foreign substances by spraying high-pressure air on the upper surface of the screen 100', and a scraper 80' for scraping foreign substances from the lower surface of the screen 100'. ) is included. Reference numeral 24' is a tensioner for tensioning the screen 100'.

However, the above device had a disadvantage in that it was not possible to reliably remove the sludge from the second filter device 6 ′, despite the excellent foreign substance collecting ability of the first filter device 2 ′.

The present invention is to develop an inclined drive hybrid filtration device that efficiently purifies polluted water generated in an industrial field, which is not known in the prior art, based on accumulated technology and know-how.

Accordingly, an object of the present invention is to provide a wet foreign material removal apparatus using a roller capable of rapidly and reliably removing foreign substances from contaminated water generated in industrial sites such as factories, mines, and recycling workshops.

The present invention in order to solve the above problems, a screen that filters and transports foreign substances between a rotating drum partially or entirely submerged in a water tank into which the inflow water is introduced and a sponge roller installed on the upper part of the outside of the water tank is wound and circulated, A dewatering roller in contact with the sponge roller is installed inside the space formed by the path of the screen, and a pressing roller in contact with the sponge roller is installed on the other side of the dewatering roller outside the space formed by the path of the screen. A removal device is provided.

At least the outer surface of the sponge roller is made of a sponge that absorbs moisture, and the dewatering roller is made of a hydrophobic material, so that water can be effectively squeezed out between the sponge roller and the sponge roller.

The compression roller has the same size and the same radius as the sponge roller, and may rotate at the same speed as the sponge roller.

On the outer surface of the pressing roller, a triangular ridge or trough-shaped protrusion or a concave-convex structure having a high surface roughness may be formed to increase adhesion with the sludge.

A brush for removing sludge may be installed at an angle on the outer side of the pressing roller, the tip of which is in contact with the surface of the pressing roller.
In addition, in the present invention, a screen for filtering and transporting foreign substances is wound between a rotating drum partially or completely submerged in the water tank into which the influent water flows and a sponge roller installed on the upper part of the outside of the water tank is wound and moved, and the path of the screen is formed A dewatering roller in contact with the sponge roller is installed inside the space, and a pressing roller in contact with the sponge roller is installed on the opposite side of the dewatering roller outside the space formed by the path of the screen, and at least the outer surface of the sponge roller is made of a sponge that absorbs moisture, the dewatering roller is made of a hydrophobic material and squeezes water between the sponge roller, and the dewatering roller in contact with the sponge roller is made of a solid metal or plastic material without a sponge. Sludge attached to the screen located between the sponge roller and the sponge roller while pressing the sponge roller by forming a triangular ridge or trough-shaped protrusion or an uneven structure with high surface roughness on the outer surface of the pressing roller To increase the adhesive force of the, the pressing roller has the same size and the same radius as the sponge roller, and rotates at the same speed as the sponge roller, to provide a wet foreign material removal device.

The foreign material removal device of the present invention does not generate backwashing water, and exhibits the effect of naturally and reliably filtering foreign materials through close contact between the screen and the rotating drum.

In addition, the foreign material filtering device of the present invention removes water first with a sponge roller and a dewatering roller, and adopts a double purification step of removing the water-removed sludge with a pressing roller and a brush, so the purification efficiency by reliably collecting and separating the sludge has the effect of increasing

In addition, the foreign matter filtering device of the present invention reduces the effect of surface tension by water, increases the surface area by forming a protrusion on the pressing roller, and at the same time increases the adhesion, and by making the contact speed constant, the adhesion with the sludge is improved and collected And it has the effect of increasing the purification efficiency.

1 is an overall configuration diagram of a backwash water filtration device disclosed in the prior literature;
2 is a view showing the overall configuration of the wet foreign matter removal apparatus according to the present invention; and
3 is an enlarged view showing the sponge roller and the pressing roller of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept consistent with the technical idea of the present invention. Accordingly, the embodiments described in the present specification and the configurations shown in the drawings are merely embodiments of the present invention and do not represent all of the technical spirit of the present invention, so various equivalents that can be substituted for them at the time of the present application It should be understood that there may be variations and variations.

2 is a view showing the overall configuration of the wet foreign matter removal apparatus 1 according to the present invention.

The foreign material removal device 1 of the present invention includes a rotating drum 20 installed to be submerged in the inflow water of the water tank 22 . The rotary drum 20 is installed beyond the height (H) of water, but may be installed so as to be all submerged in the height (H).

The screen 100 is wound on the outer surface of the rotating drum 20 , and the screen 100 extends to the sponge roller 10 installed outside the water tank 22 , and then the direction is changed to return to the rotating drum 20 again. do. The screen 100 is provided with a filter cloth to filter out foreign substances (d) from contaminated water or influent water. When the sponge roller 10 rotates, the screen 100 reciprocates between the sponge roller 10 and the rotating drum 20 like a caterpillar, and the rotating drum 20 by the traction of the screen 100. It also rotates automatically. Various changes are possible, such as installing the driving source on the rotating drum 20 or installing the driving source on each of the rotating drum 20 and the sponge roller 10 to increase the driving force. Reference numeral 70 denotes a tensioner for tensioning the screen 100'.

A rotating shaft 14 is installed in the center of the sponge roller 10 . A spin-drying roller 30 is installed on the left side of the sponge roller 10 , that is, in the space surrounded by the screen 100 , in contact with the sponge roller 10 . A pressing roller 40 in contact with the sponge roller 10 is installed on the right side of the sponge roller 10 , that is, outside the space surrounded by the screen 100 .

The sponge roller 10 has a relatively large size, and a sponge layer 12 that is an absorbent material having a constant thickness is installed over the entire outer surface. The sponge layer 12 may be provided over the entire radius except for the rotation shaft 14 . The sponge roller 10 functions to absorb or squeeze water from the foreign material delivered by the screen 100 .

The dewatering roller 30 strongly abuts against the sponge roller 10 to squeeze out the water absorbed by the sponge roller 10 and has a rotating shaft 32 . The outer surface of the dewatering roller 30 is preferably made of a solid synthetic resin or a metal material such as a copper plate or a steel plate, and any hydrophobic material may be used. Water squeezed between the dewatering roller 30 and the sponge roller 10 falls toward a reservoir (not shown).

The pressing roller 40 strongly abuts against the sponge roller 10 so as to receive sludge, which is a foreign material from which water is removed from the sponge roller 10 , and has a rotating shaft 42 . Since a lot of moisture is removed from the sponge roller 10 and the surface tension of water pulling the sludge is lowered, the sludge is smoothly transferred to the pressing roller 40 . The inventors of the present invention made the same radius of the sponge roller 10 and the compression roller 40 as 150 mm, for example, and made the rotation speed the same, confirming that the sludge collection rate of the pressing roller 40 is significantly improved. did. This is thought to be because, since two rollers of the same size move at constant velocity, they always compress the other rollers with the same contact area, and there is no leakage of rotational force as occurs in gears with different rotation ratios. The compression roller 40 may be automatically rotated by the rotation of the sponge roller 10, or may be driven by an independent driving source in order to increase the pressing force.

A brush 50, the tip of which is in contact with the surface of the pressing roller 40, is inclined to separate the sludge from the lower outer side of the pressing roller 40. The brush 50 removes the sludge S attached to the outer surface of the pressing roller 40 . The sludge (S) separated by the brush (50) falls into the container (6). Instead of the brush 50, a scraper having a rotatable blade may be installed, or an air nozzle for spraying high-pressure air by slightly spaced apart from the compression roller 40 may be installed.

According to the present invention described above, water is first removed from the sludge as foreign substances by the sponge roller 10 and the dewatering roller 30, and the sludge from which the water is removed is removed by the pressing roller 40 and the brush 50. Since it goes through a double purification step, the purification efficiency can be increased by reliably collecting and separating the sludge.

Next, Figure 3 is an enlarged view showing the sponge roller 10 and the pressing roller 40 of the present invention.

On the outer layer of the pressing roller 40, a protrusion 400 as a toothed portion such as a triangular ridge or trough is formed over the entire outer surface. The pitch between the protrusions 400 is equal to or slightly smaller than the interval between the grids of the filter cloth installed on the screen 100, so that each of the protrusions 400 seamlessly abuts on the inside of the grid to scrape the sludge attached thereto sufficiently. It is preferable to pay The protrusion 400 increases the surface area in contact with the sludge, which improves adhesion with the sludge. The same effect can be expected even if a rough surface is formed, such as sandpaper, instead of the protrusion 400 .

A brush 52 is formed at the tip of the brush 50 to separate the sludge attached to the protrusion 400 .

According to the inventor's experiment, when the foreign material removal device 1 of the present invention having the structure of FIGS. 2 and 3 is applied, 95% of the sludge S is separated from the sponge roller 10 and the pressing roller 40 ), and it was confirmed that only 5% of the sludge (S) remained, greatly improving the purification efficiency. The moisture content of the sludge S separated by the brush 50 was about 85%.

As described above, this effect is a result of reducing the influence of the relatively high surface tension of water, increasing the surface area by forming a protrusion on the pressing roller, increasing the adhesive force, and improving the adhesion by making the contact speed constant. .

The preferred embodiments of the present invention have been disclosed above, which is for illustrative purposes only and is not intended to limit or limit the scope of the present invention. It is obvious that the scope of the present invention extends to the same or equivalent scope as the claims described below.

Claims (5)

A screen that filters and transports foreign substances is wound and circulated between the rotating drum partially or completely submerged in the water tank where the inflow water flows in and the sponge roller installed on the upper part of the outside of the water tank, and a sponge is inside the space formed by the path of the screen. A dewatering roller in contact with the roller is installed, and a pressing roller in contact with the sponge roller is installed on the opposite side of the dewatering roller outside the space formed by the path of the screen,
At least the outer surface of the sponge roller is made of a sponge that absorbs moisture, and the dehydration roller is made of a hydrophobic material to squeeze water between the sponge roller and the sponge roller,
The dewatering roller in contact with the sponge roller is made of a solid metal or plastic material without a sponge, and comes into contact with the sponge of the sponge roller to squeeze out water.
On the outer surface of the pressing roller, a triangular ridge or trough-shaped protrusion or an uneven structure with high surface roughness is formed to press the sponge roller while increasing the adhesion to the sludge attached to the screen located between the sponge roller,
The compression roller has the same size and the same radius as the sponge roller, and rotates at the same speed as the sponge roller, a wet foreign material removal device. delete delete delete The method of claim 1,
On the outside of the compression roller, a brush for removing sludge with its tip in contact with the surface of the pressing roller is installed inclinedly, a wet foreign material removal device.

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