KR102053401B1 - Cassette type filter device - Google Patents

Abstract

The present invention is to provide a cassette type filter device for wastewater treatment used for the purpose of separating the sludge of solids in various water treatment process.
That is, the present invention provides a casing (2) formed with a filtration chamber (3) formed therein and a supply pipe (4) through which wastewater is introduced; A plurality of through holes (5a) formed on the outer surface, and a pair of drums (5) installed side by side spaced apart on the same horizontal surface inside the casing (2); A mesh filter 12 installed at both ends to be wound at least once around the outer circumferential surface of the pair of drums 5; A shaft 6 formed on one shaft of each drum 5 to be supported by the bearing; A reduction motor (7) connected to the shaft (6) to drive the drum (5) in rotation; A discharge shaft tube 8 formed on the other shaft of the drum 5 and fixedly supported to support the bearing; A water purification pipe 10 connected by the discharge shaft pipe 8 and the rotary joint 9; And a washing water supply pipe 15 for spraying high-pressure washing water toward the mesh filter 12 under the mesh filter 12 connecting the pair of drums 5.
According to the present invention, there is an advantage of filtering the sludge of various sizes by rotating the drum to adjust the mesh size of the mesh filter.

Description

Cassette type filter device

The present invention relates to a cassette type filter device for wastewater treatment, and more particularly, for the purpose of separating the sludge of solids in various water treatment processes, such as industrial water sludge purification treatment or solids filtration device in the food processing field. The present invention relates to a cassette type filter device capable of adjusting voids.

In general, in the process of treating sewage or industrial wastewater, it is common to first filter out large sludges or contaminants having large particle sizes, and then purify water using ozone or chemicals.

To this end, various types of filtering techniques are known, and the representative prior art discloses a technique related to an immersion type filtration device for water treatment in Korea Registered Utility Model Publication No. 20-0420112, which is due to long-term repeated use of the wastewater treatment device. When a large amount of contaminants and foreign substances are deposited on the immersion type filter surface, the compressed air is momentarily forced into the immersion type filter to quickly remove the foreign substances deposited on the immersion type surface.

Another type of prior art is disclosed in the Republic of Korea Patent Publication No. 10-0993588 discloses a technique for a water treatment filtration device using a filter material for reproducible repetitive water treatment, which consists of a plurality of filtration non-woven pieces or microfiber pieces When a certain compressive force is applied, it is uniformly compressed to form fine pores between a plurality of nonwoven fabric pieces or microfiber pieces for filtering, and when the compressive force is released, the volume expands again, thereby forming a plurality of nonwoven fabric pieces or microfiber pieces for filtering. It is a technique using a filter medium for water treatment configured to dissolve pores.

However, most of the above-described prior arts have a complicated structure, and a dust extraction means for removing solid sludge which is agglomerated in the filtration process has a complicated structure, so that it is difficult to consistently perform a work process for continuously removing solid sludge. There were many improvements in terms of structure, such as short service life and frequent replacement.

KR 20-0420112 Y1 (2006.06.28.) KR 10-0993588 B1 (2010.11.04.)

In the present invention, to solve the above-mentioned problems of the prior art, a new technique was devised, and the mesh filter was wound in a drum such that a magnetic tape was wound on two reels. Depending on the filter pore adjustment,

Solid sludge agglomerated in the mesh filter during the filtration process is a new configuration that allows the filter to widen the voids of the filter when it is quickly backflushed by the washing water sprayed through the washing water supply pipe to be converted to re-filtration. It is an object of the present invention to provide a cassette type filter device.

As a specific means for solving the above problems of the present invention constitute a cassette type filter device,

In the filtration chamber formed inside the filter device, a pair of drums having a plurality of through holes are arranged side by side in a horizontal direction, the wire mesh filter is wound on the drum, and the shaft of the drum is rotated by a driving motor to wind the mesh filter. Characterized in that the number of times can be adjusted.

In addition, the lower side of the mesh filter is characterized in that to form a washing water supply pipe provided with a spray nozzle to wash the mesh filter.

In addition, under the filtration chamber, a pair of drums in which a second mesh filter is wound therein further forms an auxiliary filtration chamber configured to rotate by a reduction motor,

The water purification pipe of the filtration chamber is connected to the upper part of the auxiliary filtration chamber, and is installed to be fixed to be supported by the bearing through the outside of the casing on one axis of the drum located in the auxiliary filtration chamber to discharge the fluid passed through the second mesh filter to the outside. It is an object of the present invention to provide a cassette type filter device in which an outlet shaft tube is formed, and the filtration chamber filters sludge with large particles and the auxiliary filtration chamber is configured to filter sludge with smaller particles by a second mesh filter.

The cassette type filter device of the present invention is relatively simple in structure and small in volume, and can be efficiently filtered even in a limited place.

In particular, by adjusting the mesh size of the mesh filter by rotating the drum, sludges of various sizes can be filtered, thereby increasing the versatility, and when the mesh filter is blocked by sludge, tension is applied to both sides of the mesh filter to widen the voids. Spraying through the spray nozzle in the state can be done quickly and effectively reverse cleaning.

In addition, when the two-layer lamination of the mesh filter wound on a pair of drums, the filter clogging time can be much shorter, and the filtration can be performed for a long time, and the washing time of the mesh filter is shortened to increase efficiency. It is an invention with great effect.

1 is a front view showing a preferred embodiment of the cassette type filter device provided by the present invention
2 is a plan view of a cassette type filter device
Figure 3 is an enlarged perspective view of the main portion of the cassette type filter device
Figure 4 is a front sectional view showing a washing state of the mesh filter
Figure 5 is a front view showing another embodiment of the cassette type filter device provided by the present invention
6 is a state diagram showing the configuration of a wastewater treatment system to which the cassette type filter device provided by the present invention is applied.

Hereinafter, with reference to the accompanying drawings will be described a specific content for the practice of the present invention. In the following description of the present invention, when it is determined that the subject matter of the present invention may be unnecessarily obscured by those skilled in the art with respect to related known functions, the detailed description thereof will be omitted.

1 is a front view showing a preferred embodiment of the cassette type filter device provided in the present invention, Figure 2 is a plan view of the cassette type filter device, Figure 3 is an enlarged perspective view of the main portion of the cassette type filter device.

Referring to the drawings, the cassette type filter device 1 provided in the present invention is formed with a casing 2 in the form of a cuboid so that the filtration chamber 3 is formed therein, and the waste water flows into the upper portion of the casing 2. An air vent 2a is installed to prevent the supply pipe 4 and the inside of the filtration chamber 3 from overpressurizing or generating an air pocket.

The lower part of the casing (2) forms a hopper (2b) so that the filtered solid sludge can be easily collected to the center, the lower end of the hopper (2b) is connected to the drain pipe 11 for draining the collected sludge do.

Although the figure shows that the casing of the filter device is formed into a rectangular parallelepiped, it may be manufactured in a cylindrical form to increase pressure resistance.

Inside the casing (2), a pair of drums (5) having a plurality of through holes (5a) formed on the outer surface are arranged side by side spaced apart on the same horizontal plane, the periphery of each drum (5) of the mesh filter 12 Both ends are wound and the waste water introduced into the filtration chamber 3 is configured to flow into the drum 5 through the through hole 5a through the mesh filter 12. In this case, the mesh filter 12 is installed to be connected to both drums 5 through the top dead center of each drum 5 as shown in FIGS. 3 and 4.

Mesh filter 12 is a woven polymer or anti-rust metal wire to have a predetermined mesh (망 目) by fixing one end of the mesh filter 12 on the outer peripheral surface of the drum (5), wound in one or more layers, The larger the number of turns, the finer the size of the mesh, so the size of the mesh can be set according to the particle size of the sludge to be filtered.

On one shaft of each drum (5) is provided with a shaft (6) formed so as to pass through the casing (2) to be supported by a bearing, and to connect it to a reduction motor (7) capable of forward and reverse driving, both drums (5). ) Can be rotated independently.

In the drawing, although the reduction motor 7 is installed separately on each shaft 6, one drive motor can be configured by connecting to a plurality of shafts 6 shafts through chains or gears, and the motor Torque limiters may be installed on the reduction motor 7 to protect the motor by blocking the circuit in the event of foreign matter or overload.

The discharge shaft pipe 8 is formed on the other shaft of the drum 5 so as to pass through the casing 2 to be supported by the bearing, and the water purification pipe 10 is formed at the end of the discharge shaft pipe 8 by a rotary joint 9. It is connected to the configuration, and flows into the filtration chamber (3) to the first purified fluid to the mesh filter 12 to be discharged to the outside through the discharge shaft tube 8 and the purified water pipe (10).

On the other hand, under the mesh filter 12 connecting between the two drums 5 for backflushing the contaminated mesh filter 12, the washing water supply pipe 15 is installed in the horizontal direction and on the washing water supply pipe 15 A plurality of injection nozzles 16 are installed at regular intervals so that the washing water is sprayed upward with a strong pressure to remove the sludge adsorbed to the mesh filter 12.

4 is a front sectional view showing the washing state of the mesh filter 12, the direction of some nozzles 16 installed in the washing water supply pipe 15 is shown in the direction in which the drum 5 is located, in particular the drum 5 Install the slant upward to face the top dead center so that the sludge is detached as soon as the mesh filter wound around the drum is released and the sludge is not accumulated on the filter again.

When the mesh filter 12 is blocked by continuous filtration of waste water, a pressure difference is generated between the supply pipe 4 into which the waste water flows and the water purification pipe 10 discharged. When a signal equal to or more than a preset pressure difference is detected by the pressure gauge, it may be displayed on the control screen for controlling the filter device 1 so that the administrator can notify the cleaning timing of the mesh filter 12.

5 is a front view showing another embodiment of the cassette type filter device provided by the present invention. As shown in the drawing, the filtration chamber 3 may be configured in two stages or in three or more stages to further increase filtering efficiency. .

That is, the upper side of the casing (2) forms a filtration chamber (3) into which wastewater flows directly, and the auxiliary filtration chamber (3 ') is formed at the lower portion of the filtration chamber (3), and each filtration chamber (3) ( The drain pipe 11 for discharging the sludge collected by the hopper 2b to the drain tank 40 is installed in the lower part of 3 ').

In each filtration chamber (3) (3 '), a pair of drums (5) driven independently by a motor are arranged side by side, spaced apart in the same horizontal plane, and the inverse of the mesh filter (12) between the two drums (5). A washing water supply pipe 15 for washing is formed.

At this time, the size of the mesh of the second mesh filter 12 'wound on the drum 5 of the auxiliary filtration chamber 3' is smaller than the mesh filter 12 disposed in the filtration chamber 3, The water purification pipe 10 connected to the discharge shaft pipe 8 installed at (3) is connected to the upper part of the auxiliary filtration chamber 3 ', so that the filtration chamber 3 located at the top of the filter filters sludge having a large particle size. In the secondary filtration chamber 3 'disposed in the sludge, fine particles of sludge are filtered by the second mesh filter 12'.

The purified water filtered through two or more filtering processes is transferred to the purified water tank 30 through the second purified water pipe 14 connected to the discharge shaft pipe 8 formed in the lowermost filtration chamber 3 '.

The driving method and operation of the sludge filtration apparatus configured as described above will be described with reference to the drawings.

The drum 5 is rotated at a low speed by the reduction motor 7 connected to the shaft, so that the mesh filter 12 coupled to the outer circumferential surface of the drum 5 may be wound or released to one side. The mesh filter 12 has a prescribed mesh but the size of the mesh becomes more dense in proportion to the number of windings on the outer circumferential surface of the drum 5 as shown in FIG. 3, so that the mesh size can be set according to the particle size of the sludge to be filtered. .

The washing of the mesh filter 12 is performed by slowly rotating the pair of drums 5 in the same direction at the same time to reverse the adsorption of the washing water with the nozzle 16 of the washing water supply pipe 15 while moving the position of the mesh filter 12. Spraying in the direction to detach the sludge, and at this time, by providing a tensile force to both sides of the mesh filter 12 by driving the RPM of one drum (5) finer than the RPM of the other drum (5). This enlargement has the effect of more quickly and effectively eliminate the sludge bound between the mesh.

Figure 6 is a state diagram showing the configuration of the wastewater treatment system to which the filter device provided in the present invention is applied.

As shown, the wastewater tank 20 is provided to collect wastewater discharged from various places of use, and the wastewater pump 21 is introduced into the filtration chamber 3 of the filter device 1 by the wastewater pump 21 and wound around the drum 5. Sludge having large particles in the mesh filter 12 is configured to be filtered and the filtered fluid is transferred to the purified water tank 30 through the purified water pipe 10 connected to the discharge shaft pipe 8.

On the other hand, the lower end of the filtration chamber 3 is connected to the drain pipe 11 for draining the sludge settled over the hopper (2b) to discharge the sludge to the drain tank 40, collected in the drain tank 40 The sludge is transferred to a separate sludge treatment device such as a centrifugal dehydrator.

When the blockage of the mesh filter 12 is detected by a pressure gauge, the fluid stored in the purified water tank 30 is driven by the washing pump 31 to be supplied to the washing water supply pipe 15 so as to spray the high pressure washing water with the nozzle 16. The sludge adsorbed on the furnace mesh filter 12 is desorbed.

The cassette type filter device 1 of the present invention configured as described above is relatively simple in structure and small in volume, so that it is easy to install even in limited places, and the particle size of the filter is changed according to the number of times the mesh filter 12 is wound around the outer peripheral surface of the drum 5. Easy to control

When the two filtration chambers 3 and 3 'are configured to have a stacked shape and the mesh of the mesh filter 12 installed in each filtration chamber is applied differently, the filter device 1 having the single filtration chamber 3 is provided. In addition to obtaining cleaner water, the closing time of the mesh filter 12 can be delayed more than twice, and the washing time of the mesh filter 12 can be further shortened, thereby increasing the efficiency and reliability of the filtration operation. There is an advantage to increase.

As described above, the detailed description of the present invention has been described with respect to the most preferred embodiment of the present invention, but various modifications may be made without departing from the technical scope of the present invention. Therefore, the scope of protection of the present invention should not be limited to the above embodiments, but the scope of protection from the technologies described in the claims and the equivalent technical means will be recognized.

1: cassette type filter unit
2: Casing 2a: Air vent 2b: Hopper 3: Filtration room 3 ': Secondary filter room
4: supply pipe 5: drum 5a: through hole 6: shaft 7: deceleration motor
8: Drain pipe 9: Rotary joint 10: Water pipe 11: Drain pipe
12: mesh filter 12 ': second mesh filter 14: second water pipe
15: washing water supply pipe 16: nozzle
20: wastewater tank 21: wastewater pump
30: water purification tank 31: washing pump 40: drain tank

Claims (4)

A casing 2 having a filtration chamber 3 formed therein and a supply pipe 4 through which wastewater is introduced;
A hopper 2b for collecting sludge settled under the casing 2; And a drain pipe 11 connected to the hopper 2b for draining the sludge;
A plurality of drums (5a) is formed on the outer surface, the pair of drums (5) installed side by side spaced apart on the same horizontal surface inside the casing (2);
A mesh filter 12 having both ends wound around the outer circumferential surface of the pair of drums 5 one or more times and connected to both drums 5 through the top dead center of each drum 5;
A shaft 6 supported by a sieve bearing formed to penetrate out of the casing 2 from one side of each drum 5;
A reduction motor (7) connected to the shaft (6) individually to drive both drums (5) independently;
A discharge shaft tube (8) formed at the other side of the drum (5) for discharging the fluid having passed through the mesh filter (12) to the outside and penetrated to the outside of the casing (2) to be fixed to the bearing;
A water purification pipe 10 connected to the discharge shaft pipe 8 through the rotary joint 9;
A washing water supply pipe (15) installed in a horizontal direction under the mesh filter (12) connecting the pair of drums (5) to spray high pressure washing water toward the mesh filter (12);
The purified water pipe 10 is connected to the purified water tank 30 to collect the filtered fluid,
The washing water supply pipe 15 is connected to the purified water tank 30 through the washing pump 31,
The washing of the mesh filter 12 is a high pressure of the fluid of the purified water tank 30 is supplied to the washing water supply pipe 15 by the washing pump 31 and sprayed through the nozzle 16 installed on the washing water supply pipe 15. Washing is done with washing water,
Some of the nozzles 16 installed in the washing water supply pipe 15 are inclined upwardly toward the top dead center of the drum 5 so that sludge is detached as soon as the mesh filter 12 wound on the drum 5 is released. , Cassette type filter device characterized in that configured to prevent the sludge is separated from stacked on the filter again.
The method according to claim 1,
One or more auxiliary filtration chambers 3 'are further stacked on the lower part of the filtration chamber 3,
In the auxiliary filtration chamber 3 ', a pair of drums 5 on which the mesh filter 12 is wound is installed to rotate by the reduction motor 7,
The purified water pipe 10 of the filtration chamber 3 is connected to the upper portion of the auxiliary filtration chamber (3 ') formed to be immediately adjacent to the lower portion,
A discharge shaft pipe which is fixed to be supported by a bearing penetrated outside the casing (2) on one side of the drum (5) installed in the auxiliary filtration chamber located at the bottom to discharge the final purified fluid to the outside of the filter device (1) (8) and form a second water purification pipe 14 connected thereto,
The size of the mesh of the mesh filter 12 provided in the uppermost filtering chamber 3 is larger than that of the mesh filter 12 disposed in the lower auxiliary filtering chamber 3 '. Cassette type filter device, characterized in that the sludge is filtered and the secondary filter chamber (3 ') is configured to filter the sludge smaller particles.
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