KR101880269B1 - Filter press - Google Patents

Abstract

The present invention relates to a driving-type filter cloth and a filter press comprising the same. More specifically, the filter cloth is installed between filter plates of a filter press which comprises: a stationary plate and a driving plate which are spaced apart from each other on a frame; and a plurality of filter plates which are installed between the driving plate and the stationary plate, are connected so as to be able to move away from one another to a predetermined interval, and are compressed to one another when the driving plate is moving toward the stationary plate. More specifically, the filter cloth comprises: a filter cloth main body which includes two plies of filter parts and a center support part connected to an upper end of the filter parts, wherein the filter parts, when operated, come in close contact with the filter plates and receive therebetween sludge introduced between the filter plates; a connector which is disposed between the filter clothes while being joined to the center support part; and a slurry induction member which is affixed to a lower end portion of the connector, and is separated from the filter parts while being placed between the filter parts as the center support part is being lowered, to be exposed to a lower part of the filter plates. The driving-type filter cloth device of the present invention can absorb stretching phenomena that occur on the filter cloth in use, and thus shows high driving efficiency. Further, after the filter cloth is used, the slurry induction member inside the filter cloth as well as the inner surface of the filter cloth can be completely exposed to the outside and cleaned using high-pressure water, and thus contamination problems such as slurry deposition can be prevented in advance.

Description

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter press, and more particularly, to a traveling filter cloth having a configuration capable of simultaneously cleaning a slurry guide member and a filter cloth by completely exposing a slurry guide member inside a filter cloth after inverting a filter cloth after press- And to a filter press equipped therewith.

Since it is difficult to treat the slurry as it contains a lot of water in slurry produced in various industrial sites as well as sewage treatment plants, it is made into a cake with a low water content by using equipment such as a filter press, .

The filter press is a device configured to separate a solid and a liquid by injecting slurry at a high pressure between a plurality of filter plates on which filter cloths are mounted. The liquid filtrate is drained out of the filter plate during the compression process, and the solid cake remains between the filter plates. The cake between the filter plates is dropped and discharged downward by its own weight when the filter plate is separated. However, when the specific gravity of the cake is small or the viscosity is high, the automatic dropping of the case is not smooth. In such cases, a separate vibrator must be added or the operator must manually remove the vibrator.

In order to solve such a problem, Korean Patent Registration No. 10-0541328 (filter press) has been proposed. The filter press causes the filter cloth to circulate in the vertical direction along the rollers arranged at the upper and lower sides so that the difference between the bending radius of the filter cloth and the bending radius of the case while the cake attached to the filter cloth winds the lower roller, So that the cake separates from the filter cloth while it passes through the lower roller.

However, the above-described conventional filter press can not flexibly cope with the expansion and contraction of the filter fabric that occurs during use, so that there is a disadvantage that the relative positions of the slurry supply device and the filter fabric must be adjusted frequently.

On the other hand, conventionally, the filter cloths adjacent to each other are raised and lowered in a state where they are coupled to each other. As a result, the filter cloths can not be divided into a plurality of groups, and accordingly, the size of the filter press can not be increased.

Korean Patent Registration No. 10-0541328 (filter press) Korean Patent Publication No. 10-1113228 (filter press having a rotary filter cloth) Korean Patent Registration No. 10-1092156 (filter plate feeding device of filter press) Korean Registered Patent No. 10-1680169 (hanger device of filter cloth and filter press running on filter cloth in filter cloth traveling filter type)

The present invention provides a traveling filter fabric and a filter press equipped with the same, which can absorb expansion and contraction occurring in a filter fabric during use, has high operation efficiency, is flushable with high-pressure water and does not cause contamination problems such as slurry adhesion There is a purpose.

Another object of the present invention is to provide a traveling filter cloth capable of independently running each filter cloth and a filter press having the same.

The traveling filter cloth of the present invention for achieving the above objects comprises a fixing plate and a movable plate which are spaced apart from each other so as to correspond to each other on a frame, a hydraulic cylinder which moves the movable plate against and away from the fixing plate, And a plurality of filter plates which are connected to each other so as to be opened at regular intervals and which are pressed together when the movable plate moves to the fixed plate side, A filter bag main body having a two-ply filtration section for receiving and accommodating sludge flowing therebetween, and a center support section connected to an upper end of the filtration section; A connector positioned between the filter cloths while being coupled to the center support; And a slurry guide member which is fixed to a lower end of the connector and is interposed between the filtration units and is separated from the filtration unit and exposed to the lower portion of the filter plate when the center support unit is lowered.

In addition, the filter plate is provided with a slurry guide hole through which the slurry flowing from the outside flows, and a filter pocket communicating with the slurry guide hole is provided in the filter cloth main body in a state where the filter cloth is maximally raised.

Further, the slurry inducing member includes: A horizontal guide path communicating with the filter pores in a state where the filter cloth is maximally raised and receiving the slurry therein, and a vertical guide path connected to the horizontal guide path and guiding the slurry in the horizontal guide path between the filtering parts.

According to another aspect of the present invention, there is provided a filter press comprising: a fixed plate and a movable plate spaced apart from each other to correspond to each other on a frame; a hydraulic cylinder for moving the movable plate toward and away from the fixed plate; A plurality of filter plates provided between the filter plates and connected to each other so as to be opened at regular intervals and pressed together when the movable plate moves to the fixed plate side, and a plurality of filter plates provided between the filter plates, A filter press having a filter cloth for receiving and containing therein, the filter cloth comprising: A two-ply filtration unit composed of a porous sheet having a predetermined width and in contact with the filter plate in operation and receiving and accommodating the sludge flowing through the filter plate therebetween, and a center support unit fixed to the upper end of the filtration unit A filter fabric body; A connector positioned between the filter cloths while being coupled to the center support; And a slurry guide member which is fixed to a lower end of the connector and is interposed between the filtration units and is separated from the filtration unit and exposed to the lower portion of the filter plate when the center support unit is lowered.

In addition, the filter plate is provided with a slurry guide hole through which the slurry flowing from the outside passes, and a filter pocket communicating with the slurry guide hole is provided in the filter bag body in a state where the filter cloth is maximally raised.

Further, the slurry inducing member includes: A horizontal guide path communicating with the filter pores in a state where the filter cloth is maximally raised and receiving the slurry therein, and a vertical guide path connected to the horizontal guide path and guiding the slurry in the horizontal guide path between the filtering parts.

A pair of drive pulleys provided at the upper end of each filter plate and rotating in the opposite direction to raise the slurry guide member before the filter plate is brought into close contact with the filter plate and lower the slurry guide member after the filter plate has been opened, One end thereof is connected to the center support portion and the other end is connected to a distal end portion of the filtration portion so as to be reciprocated in the longitudinal direction in accordance with the rotation of the drive pulley, And a pair of timing belts for reversing and raising both side filtration parts.

The lower end of each filter plate is provided with a lower end bracket for providing a supporting force and the lower end bracket is provided with a wash water supply unit for removing contaminants by applying wash water to the filter cloth and slurry inducing member.

The filter press having the filter fabric of the present invention as described above can absorb the elongating and contracting phenomenon occurring in the filter fabric during use and thus can be operated with high efficiency. In addition, after the filter fabric is used, the inner surface of the filter fabric, The member can be completely exposed to the outside, and the water can be washed through the high-pressure water, so that the problem of contamination such as slurry adhesion is not caused.

In addition, each of the filter cloths travels independently, so that a plurality of filter cloths connected to one axis can be independently traveled by dividing them into a plurality of groups. Accordingly, the size of the filter press can be reduced.

1 is a side view showing the entire structure of a filter press to which a traveling filter cloth according to an embodiment of the present invention is applied.
Fig. 2 is a plan view for explaining the operation of the electric shaft in the filter press shown in Fig. 1 as a reference.
Fig. 3 is a view showing a part of the filter press shown in Fig. 1. Fig.
Fig. 4 is a side view separately showing a filter cloth and a timing belt in a compressed state between the filter plates of Fig. 3. Fig.
5 is a side view showing another part of the filter press shown in Fig.
FIG. 6 is a view showing separately a filter cloth and a timing belt located between the filter plates of FIG. 5;
FIG. 7 is a side view for explaining the construction of a traveling-type filter fabric according to an embodiment of the present invention.
8 is a partially cutaway view seen from the direction of arrow A in Fig.
9 is a view for explaining a washing water supply unit in a filter press according to an embodiment of the present invention.

Hereinafter, one embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

Basically, the filter press 10 according to this embodiment to be described later has the feature that the filter cloth 30 shown in Figs. 7 and 8 is mounted. The filter cloth 30 is composed of a porous filter cloth main body 35, a connector 33c and a slurry guide member 33 and increases the efficiency of the filter press 10 through the construction and operation to be described later. The overall configuration of the filter press 10 will now be described with reference to FIGS. 1 and 2. FIG.

FIG. 1 is a side view showing the entire structure of a filter press 10 to which a filter cloth according to an embodiment of the present invention is applied. FIG. 2 is a view for explaining the operation of the electric shaft 24 shown in FIG. 1 Fig.

As shown in the drawing, the filter press 10 according to the present embodiment includes a frame 12 extending in the longitudinal direction to provide a supporting force, a fixing plate 14 provided at both ends of the frame 12, A plurality of filter plates 26 provided between the fixed plate 14 and the movable plate 16 and a plurality of filter plates 26 disposed between the fixed plate 14 and the movable plate 16, A filter cloth 30 interposed between the filter plates 26 and four transmission shafts 24 connected to the bevel gears 26k provided at the upper ends of the filter plates 26. [

The cylinder 18 is horizontally fixed to the frame 12 and moves the movable plate 16 forward and backward with respect to the fixed plate 14. As the movable plate 16 moves toward the fixed plate 14, the filter plates 26 come close to each other and finally close completely and wait for slurry injection from the outside through the slurry injecting unit 15.

The electric motor shaft 24 is a hexagonal rod that is rotated by the filter driving part 22 and is connected to a drive pulley 26d via a bevel gear part 26k. The filtration filter driving unit 22 is a rotational force output unit including a motor and a speed reducer.

The shaft rotational force of the electric shaft 24 is transmitted to the drive pulley 26d to rotate the drive pulley 26d. The drive pulley 26d is connected to a timing belt 28 (Fig. 4) to be described later, and moves the timing belt.

The electric shafts 24 are all four and are arranged in a straight line by two. In the drawing, for example, a groove 24a is formed at the right end of the left electric motor shaft 24, a rotation protrusion 24b is formed at the left end of the right electric motor shaft 24, As shown in FIG. The rotation protrusion 24b is relatively rotatable in a state of being supported inside the groove 24a. It is a matter of course that a bearing or the like is provided between the rotation protruding portion 24b and the groove portion 24a. The rotational direction or rotational direction of the two electric shafts 24 connected in a straight line can be controlled through the filtering cloth driving part 22. [

The electric shafts 24_1, 24_2, 24_3, and 24_4) are individually rotatable by the respective filter cells 22_1, 22_2, 22_3, and 22_4. That is, even if the first filter drive portion 22_1 rotates the first transmission shaft 24_1, the second transmission shaft 22_2 connected to the same filter shaft does not rotate. On the contrary, even if the second filter drive unit 22_2 rotates the second transmission shaft 24_2, the first transmission shaft 22_1 connected to the same filter is not rotated.

Further, even if the third filter cloth driving unit 22_3 rotates the third transmission shaft 24_3, the fourth transmission shaft 22_4 connected to the same filter shaft does not rotate. Even if the fourth filter cloth driving part 22_4 rotates the fourth transmission shaft 24_4, the third transmission shaft 22_3 connected to the fourth filter bag driving part 22_4 does not rotate.

Therefore, according to the present invention, a group of filter cloths connected to one motor shaft can be driven independently of a group of filter cloths connected to other motor shafts.

This is because, as described later, adjacent filter cloths are connected to each other and do not ascend and descend, but are combined organically together with a structure having a structure in which the individual filter cloths run independently, so that a group of filter presses can be opened and closed.

All four electric shafts 24 described in FIG. 2 are applied, but the number of the electric shafts 24 may be changed as a matter of course.

Reference numeral 20 denotes a gate portion. The gate part 20 receives the effluent discharged from the filter plate 26 in a closed state and once is guided to the outside, and is opened after dewatering is completed to provide a passage through which the cake can be dropped downward.

On the other hand, a filter cloth 30 is provided between the filter plates 26. The filter cloth 30 once receives the slurry injected through the slurry injecting unit 15 into the inside thereof, and then causes the liquid to escape from the slurry by an additional applied pressure from the outside. The slurry from which the liquid has escaped falls as a solid component to the bottom of the filter plate 26 after it is opened.

7 and 8, the structure of the filter cloth 30 itself will be described first. Fig. 7 is a side view for explaining the construction of the filter fabric 30, and Fig. 8 is a partial cutaway view of the filter fabric of Fig.

7 and 8, the filter cloth 30 according to the present embodiment includes a filter cloth main body 35 made of a porous sheet, connectors 33c and 33c mounted inside the filter cloth main body 35, And a slurry guide member (33).

The filter cloth main body 35 is made of a porous sheet having a predetermined thickness and includes a central support portion 31 in a mutually overlapping state and a filtration portion 32 extending in the longitudinal direction and extending to the lower end portion of the center support portion 31 ).

In addition, an upper end connecting portion 31a is provided at the upper end of the center support portion 31. The upper connecting portion 31a provides a passage through which the rod-shaped link pin (31b in Fig. 8) can be inserted. As shown in Fig. 6, one end of a timing belt 28, which will be described later, is fixed to the upper connecting portion 31a.

The filtration part 32 is connected to the lower end of the center support part 31 and has two folds as a part extending downward. In addition, a distal end connecting portion 32a is positioned at a lower end portion of each filtration portion 32 in the drawing. The end connection portion 32a is a portion that engages with the other end of the timing belt 28. [

Each filter portion 32 is provided with a filter cloth hole 32d. The filter cloth hole 32 is formed in such a manner that the filter cloth 30 is aligned with the slurry guide hole 26b of the filter plate 26 in the state where the filter cloth 26 is maximally raised between the filter cloths 26 Hole. The filter cloth hole 32d is a through hole for passing the slurry flowing through the slurry guide hole 26b.

A connector 33c is fixed to the lower end of the center support portion 31. [ The connector 33c is a member extending downwardly connected to the center support portion 31 and supports the slurry guide member 33 in a state interposed between the filtration portions 32. [

The slurry guide member 33 is a member connected to the lower end of the connector 33c and has a horizontal guide path 33a and a vertical guide path 33b. The horizontal guide path 33a is a through-hole having a diameter corresponding to the filter cloth hole 32d, and is a path through which the slurry having passed through the filter cloth hole 32d is horizontally passed or lowered to the vertical guide path 33b. The diameter of the filter pocket 32d is equal to or larger than the diameter of the horizontal guide path 33a.

The vertical guide passage 33b communicates with the horizontal guide passage 33a and extends vertically. The vertical guide passage 33b guides a part of the slurry entering the horizontal guide passage 33a downward to fill the space between the filtration portions 32 do.

3 to 6, the detailed structure of the filter cloth 30 on which the filter cloth 30 and the filter cloth 30 are mounted will be described in more detail. Fig. 3 is an enlarged view of a portion A in Fig. 1, and Fig. 5 is an enlarged view of a portion B in Fig. FIG. 4 is a view showing separately the filter cloth and the timing belt in the compressed state between the filter plates of FIG. 3, and FIG. 6 is a view showing separately the filter cloth and the timing belt located between the filter plates of FIG.

3 or 5, the filter plate 26 includes a filter plate 26a having a plate shape and extending in the vertical direction and having a slurry guide hole 26b, and a filter plate 26a An upper inclined portion 26c integrally formed on the upper portion of the upper press portion 26f and extending in an oblique direction and an upper inclined portion 26c extending from the upper inclined portion 26c, A gear portion 26k and a drive pulley 26d and a lower pressing portion 26g formed at the lower end of the filter plate 26a and a lower end bracket 26h located at the lower portion of the lower pressing portion 26g.

The drive pulley 26d is connected to the transmission shaft 24 via the bevel gear portion 26k and rotates in opposite directions. In particular, a timing belt 28 is provided on each of the drive pulleys 26d.

The upper pressing portion 26f is in close contact with the upper pressing portion 26f of the adjacent filter plate 26 with the center support portion 31 interposed therebetween. Similarly, the lower crimping portion 26g corresponds to the lower crimping portion 26g of the adjacent filter plate 26 with the filtration portion 32 interposed therebetween. The space between the upper crushing part 26f and the lower crushing part 26g is a space 26e in which the slurry is filled in a state in which the four surfaces are in close contact.

The slurry flowing through the slurry injecting unit 15 passes through the slurry guide hole 26b and the horizontal guide path 33a formed in the filter plates 26 and a part of the slurry passes through the vertical guide path That is, the inside of the filtration part 32 through the openings 33a and 33b.

The timing belt 28 is a linear member extending in the longitudinal direction. As mentioned above, one end of the timing belt 28 is connected to the upper connecting portion 31a and the other end is connected to the end connecting portion And serves to transmit the rotational force of the driving pulley 26d to the filter fabric 30. [ The rotation of the drive pulley 26d is performed in a state in which the filter plate 26 is opened as shown in Fig.

The lower bracket 26h is provided with two inner nozzle shafts 27a and an outer nozzle shaft 27b. The inner nozzle shaft 27a is a shaft for supporting the inner surface of the filtration portion 32 of the neighboring filter cloth 30. [ And the filtration portion 32 winds the inner nozzle shaft 27a.

Particularly, the inner nozzle shaft 27a supports the filtration part 32 in a circulating manner and also serves to spray the washing water to the periphery thereof. The washing water injected through the inner nozzle shaft 27a injects the washing water backward from the inner side of the filtration part 32 toward the outer side where the cake is formed so that the slurry adhered to the filtration part 32 is fixed to the filtration part 32. [ (32).

The outer nozzle shaft 27b is a hollow shaft-shaped member located at the lower side of the inner nozzle shaft 27a, and injects wash water to the periphery thereof. The washing water injected from the outer nozzle shaft 27b rinses the slurry inducing member 33 descending to the bottom dead center, as shown in Fig. 5, as well as the outer surface of the filtration portion 32. [ The slurry remained in the horizontal guide path 33a formed in the slurry guide member 33 and the case residues between the filtration unit 32 and the slurry guide member 33 are cleanly removed and effectively adhered to the filter plate .

On the other hand, as shown in Fig. 3, after the slurry to be treated is supplied to the interspace 26e of the filter plate 26 in close contact with each other, if the dewatering of the slurry is completed by applying appropriate pressure, The drive pulley 26d is rotated in the direction of arrow a after opening the filter plate 26 in close contact. It goes without saying that the electric shaft 24 and the bevel gear portion 26k act to rotate the drive pulley 26d.

When the drive pulley 26d is rotated in the direction of arrow a after opening the filter plate 26, the filtration part 32 moves in the direction of arrow z and the cake filling the interspace 26e is discharged downward. At this time, the slurry guide member 33 descends toward the bottom dead center and the filtration unit 32 is inverted to expose the inner side surface to the outside.

The inner nozzle shaft 27a and the outer nozzle shaft 27b eject the washing water to the inner and outer surfaces of the filtration part 32. After the discharge of the cake is completed, The cleaning is carried out continuously.

When the discharge of the cake and the flushing of the slurry guide member 33 and the filtration unit 32 are completed through the above process, the drive pulley 26d is rotated in the direction of arrow b in Fig. As the drive pulley 26d rotates in the direction of the arrow b, the timing belt 28 moves in the direction of the arrow m shown in Fig. 6 and the upper connecting portion 31a and the slurry guide member 33 ascend, 32 also move in the direction of the arrow p, and a part thereof follows the center support portion 31.

When the slurry guide member 33 reaches the top dead center and is positioned in the slurry guide hole 26b as shown in FIG. 3, the rotation of the drive pulley 26d is stopped and the filter plate 26 And the slurry is brought into close contact again to wait for the re-flow of the slurry.

9 is a view for explaining the washing water supply part 42 in the filter press 10 according to the embodiment of the present invention.

As shown in the drawing, an inner nozzle shaft 27a and an outer nozzle shaft 27b are provided in parallel to the lower portion of the filter plate 26. As shown in FIG. Needless to say, a plurality of nozzles (not shown) for spraying washing water are arranged on the outer circumferential surfaces of the inner nozzle shaft 27a and the outer nozzle shaft 27b.

Also, as the wash water supply part 42, a wash water inlet 38 and a plurality of hoses 39 and 40 are included. The hose 39 is a washing water supply pipe connecting the washing water inlet pipe 38 and the outer nozzle shaft 27b. The other hose 40 is a supply pipe connecting the outer nozzle shaft 27b and the inner nozzle shaft 27a.

The wash water supply pipe 38 receives the wash water supplied from the outside and transfers the wash water to the hose 39 so that the wash water sequentially passes through the outer nozzle shaft 27b and the inner nozzle shaft 27a and discharges the wash water to the outside.

As a result, the filter fabric 30 according to the present embodiment configured as described above completely reverses the filtration part 32 during the process of discharging the cake downward, and the inner surface of the filtration part 32 is opened to the outside And the slurry guide member 33 is completely separated from the filtration unit 32. Therefore, the cleaning effect is excellent and the reliability of the filter cloth 30 is always kept high.

According to the present invention, each filter fabric can run independently. Therefore, if a plurality of filter bags for driving the filter cloths are provided, the filter plates can be opened and closed step by step, thereby performing the press work.

Thus, according to the present invention, the work stroke can be remarkably reduced. If the entire filter plates are opened and closed at the same time, the operating stroke must be large.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

10: filter press 12: frame 14: fixed plate
15: slurry injecting unit 16: movable plate 18: cylinder
20: gate part 22: filter cloth driving part 23: filtering cloth operating part
24: electric shaft 24a: groove portion 24b:
26: filter plate 26a: filter plate 26b: slurry guide hole
26c: upper inclined portion 26d: drive pulley 26e: interspace
26f: upper pressing portion 26g: lower pressing portion 26h: lower end bracket
26k: bevel gear portion 27a: inner nozzle shaft 27b: outer nozzle shaft
28: timing belt 30: filter cloth 31: central portion
31a: upper end connecting portion 31b: link pin 32d: filter cloth hole
32: filtration part 32a: end connection part 33: slurry guide member
33a: horizontal guide path 33b: vertical guide path 33c: connector
35: filter cloth body 38: wash water inlet 39, 40: hose
42:

Claims (9)

delete delete delete A plurality of filter plates provided between the movable plate and the fixed plate and connected to each other so as to be spaced apart from each other at a predetermined interval and pressed against each other when the movable plate moves toward the fixed plate; A filter cloth which is provided between the filter plates and receives the slurry flowing into the space between the filter plates and accommodates the slurry therein and a filter cloth operating means for moving the filter cloth up and down,
The filter cloth comprising:
A two-ply filtration unit which is made of a porous sheet having a predetermined width and is in close contact with the filter plate in operation and receives and accommodates sludge flowing through the filter plate therebetween and a center support unit fixed to the upper end of the filtration unit A filter fabric main body;
A connector positioned between the filter cloths while being coupled to the center support;
And a slurry guide member fixed to a lower end portion of the connector and interposed between the filtration portions, the slurry guide member being separated from the filtration portion and exposed to the lower portion of the filter plate when the center support portion descends,
Said filter operating means comprising: The slurry guide member is raised before the filter plate is brought into close contact with the filter plate, and the slurry guide member is lowered after the filter plate is opened,
A first and second electric shafts linearly and horizontally connected to the frame;
A first filter drive unit for controlling the shaft rotation of the first electromotive shaft;
And a second filter drive unit for controlling the axial rotation of the second electric motor shaft,
Wherein the first and second electric shafts are axially joined to rotate independently of each other. 5. The method of claim 4,
The filter plate is provided with a slurry guide hole through which slurry flowing from outside flows,
Wherein the filter fabric body is provided with a filter pocket communicating with the slurry guide hole in a state where the filter cloth is maximally lifted. 6. The method of claim 5,
The slurry guide member includes:
A horizontal guide path communicating with the filter bore in a state in which the filter cloth is maximally raised and receiving the slurry therein,
And a vertical guide path connected to the horizontal guide path and guiding the slurry in the horizontal guide path between the filtering parts. delete 5. The method of claim 4,
The filter operating means comprises:
A bevel gear portion provided at an upper end of each of the filter plates and connected to the electric shafts and operated according to the rotation of the shaft of the electric shafts;
A pair of driving pulleys that rotate by receiving rotational force from the bevel gear unit;
And the other end portion is connected to the distal end portion of the filtration portion and reciprocates in the longitudinal direction in accordance with the rotation of the drive pulley, And a pair of timing belts for lowering and raising both side filtration parts. 5. The method of claim 4,
The lower end of each filter plate is provided with a lower end bracket for providing a supporting force,
Wherein the lower bracket is provided with a washing water supply unit for removing contaminants by applying washing water to the filter cloth and the slurry inducing member.

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