KR102291122B1 - plate for plate and frame type filter press - Google Patents

Abstract

A plate of a duplex filter press is disclosed. The plate of the duplex filter press of the present invention includes an edge portion forming a closed circuit shape; at least two or more passage portions including passage holes for defining passages when the plurality of frames and the plurality of plates are brought into close contact; a drain hole which is a passage for discharging the filtrate filtered through the plate to at least one of the passage holes; and a drain plate connected to the inner surface of the edge part and having a predetermined structure.

Description

Plate for plate and frame type filter press

The present invention relates to a plate of a duplex filter press.

A filter press is a filtration device that uses a plurality of filter plates, filter paper, and pressurizing means to dehydrate liquid components from a liquid to be treated, such as industrial wastewater, to the outside of the chamber and separate the remaining sludge inside the chamber. Here, the chamber means an empty space for receiving the liquid to be treated. When the liquid to be treated in the chamber is dehydrated, sludge with a significantly lowered moisture content remains, which is called a cake.

On the other hand, the filter press is sometimes used for food, and in this case, it is also manufactured in a small size.

The filter press may be classified into a single filter press or a double filter press according to its use.

In the single-stage filter press, filter plates of the same shape are repeatedly arranged, and the inner side of the filter plate includes a concavely recessed portion, so that the two filter plates form one chamber.

On the other hand, the double filter press consists of a pair of a frame having a closed circuit structure and a plate formed of a membrane structure, and these are repeatedly arranged. In the double filter press, the outer wall of the chamber is defined by a frame with an empty space inside and plates on both sides.

Fig. 1 schematically shows the overall shape of a duplex filter press, and Fig. 2 shows a partial configuration of the duplex filter press by way of example.

Referring to FIG. 1 , the filter press includes a plurality of frames 10 , a plurality of plates 20 , filter paper 30 , a liquid to be treated supply unit 40 , a hydraulic cylinder 50 , a pressure control means 52 , and a head. (60) and followers (60).

The frame 10 and the plate 20 are alternately and repeatedly arranged.

The filter paper 30 is disposed between the frame 10 and the plate 20 .

The to-be-processed liquid supply part 40 supplies the to-be-processed liquid which needs to reduce the moisture content.

The liquid to be treated may be injected into the chamber in various ways. For example, the liquid to be treated may be supplied through a flow path formed by pressing the plurality of frames 10 and plates 20 . As for the flow path, the third flow path part 16 of the frame 10 and the seventh flow path part 26 of the plate 20 form an upper flow path, and the fourth flow path part 18 of the frame 10 and the plate 20 The eighth flow path portion 28 of each forms a lower flow path. The liquid to be treated supplied to the flow passage may be injected into the chamber (ie, the closed circuit internal space defined by the frame) through the flow hole formed in the third flow passage 16 and the inlet hole formed between the chamber.

The liquid to be treated injected into the chamber is provided with a pressure to supply the liquid to be treated, and the water contained therein is discharged through the filter paper. Moisture may be discharged to the plate 20 side.

In the plate 20 , moisture flows to at least one of the four corners through a predefined path. The moisture is eventually discharged through the drain hole formed between the inner edge of the plate 20 and the flow passage. For example, water flowing in the inner space of the plate 20 flows to the fifth flow path part 22 and the sixth flow path part 24 , and the first flow path part 12 and the plate 20 of the frame 10 . The outside of the filter press through the lower passage defined by the fifth passage 22 of the frame 10 and the upper passage defined by the second passage 14 of the frame 10 and the sixth passage 24 of the plate 20 is emitted as

The plate 20 may be formed as a drainage space formed on a substantially hexagonal plane, avoiding the space occupied by the channel hole in the center, in which channel holes are formed in the four corners of the rectangular plate. Such a shape is disclosed in Korean Patent Registration No. 10-1195669.

On the other hand, in order to use the space more efficiently, the plate 20 has a separate extension part to form a flow hole. This is to use most of the area except for the edge of the rectangular plate for filtering. These extensions are illustrated as the fifth passage portions 22 to the eighth passage portions 28 illustrated in FIGS. 2 and 3 .

The hydraulic cylinder 50 provides pressure to the frame 10 and the plate 20 , and this pressure can be adjusted through the pressure control means 52 .

The head 60 serves as a reference surface for pressing the frame 10 and the plate 20 of the filter press and is fixed at the reference position.

The follower 70 is movable on the opposite side of the head 60 , including a surface for pressing the frame 10 and the plate 20 .

The follower 70 may move toward or away from the frame 10 and the plates 20 .

The follower 70 moves toward the frame 10 and the plate 20 to transmit the pressure of the hydraulic cylinder 50 to them. The follower 70 also assists the separation of the frame 10 and the plate 20 by moving in the opposite direction. That is, the follower 70 may be connected to the frame 10 and the plate 20 connected in succession by a connection auxiliary means such as a chain, and may be spaced apart from each other by pulling them.

On the other hand, Figure 3 shows an exploded view of the plate 20 used in the prior art.

The plate 20 includes a fifth flow path part 22 , a sixth flow path part 24 , a seventh flow path part 26 , an eighth flow path part 28 , a perforated plate 23 , and a screw coupling part 25 . do.

The perforated plate 21 supports its shape so that the plate 20 is not depressed by the pressure applied by the liquid to be processed formed in the chamber. On the other hand, the through hole formed in the perforated plate 23 provides a passage so that the moisture that has passed through the filter paper 30 can flow into the space between the two perforated plates 23 .

The two perforated plates 23 disposed opposite to each other are screwed together by a screw coupling part 25 .

The edge portion of the plate 20 and the perforated plate 23 define a space through which moisture flows. Moisture may be discharged to the outside again through the drain hole and the fifth passage 22 and the sixth passage 24 .

The perforated plate 23 is subjected to strong pressure by the pressure to which the liquid to be treated is supplied. In order to prevent depression that may occur due to this pressure, a support may be installed inside the edge of the plate 20 .

This conventional plate 20 has several disadvantages.

First, it is not spatially efficient because the perforated plate 23 must be installed on both the front and rear sides of the plate 20 . That is, there is a disadvantage in that the thickness of the plate 20 itself becomes thick, and a lot of time is wasted in cleaning because foreign substances are caught inside.

Second, the perforated plate 23 is likely to be depressed by the supply pressure of the liquid to be treated, and there is a limit in resisting the shape deformation due to the pressure even when the support is installed.

Third, cleaning the inside of the perforated plate 20 requires a long cleaning operation time because the disassembly operation is accompanied, and a state in which foreign substances are not removed frequently occurred. Due to these disadvantages, the prior art may cause product instability, especially when used in the food and pharmaceutical industries where impurities must be minimized. In other words, there was a limit to the use of the filter press in the manufacture of food, pharmaceuticals, etc.

The present invention has been proposed to improve the above-mentioned problems of the prior invention.

The technical problem to be solved by the present invention is that the filtrate on the plate can flow without using a method of supporting both sides with a perforated mesh plate as in the prior art while being relatively thin and not easily deformed in shape, so that the filtration efficiency can be increased. It is to provide a plate of a duplex filter press that is very easy to clean because it can be washed without removing the components.

In order to solve the above technical problem, the plate of the duplex filter press according to an embodiment of the present invention includes a lower end, a first side, an upper end, and a second side formed along each side of a rectangle to form a closed circuit shape. ; at least two or more passage portions including passage holes for defining passages when the plurality of frames and the plurality of plates are brought into close contact; a drain hole which is a passage for discharging the filtrate filtered through the plate to at least one of the passage holes; and a drain plate connected to the inner surface of the edge part and having a structure satisfying all of the following conditions, including, 'Condition 1) A plurality of planes disposed on the same plane as the front and rear surfaces of the edge part exist, condition 2) The distance between the plurality of planes should be less than or equal to a predetermined distance, Condition 3) The drain plate should define a flow path to at least one of the lower end, the first side, the upper end, and the second side. , ridges and troughs are respectively disposed on the same plane as the front and back surfaces of the edge portion, the cross section forms a square wave, and the scatter between the ridges and ridges and troughs and troughs is formed to be less than or equal to the predetermined distance, and the lower end portion, A drain groove may be formed on the upper surface to be connected to a flow path defined by the drain plate, and the drain groove may define a flow path from a surface where the flow path defined by the drain plate and the drain groove meet to a surface where the drain hole meets.

In one embodiment of the present invention, the drain plate includes a structure of a square wave shape in which a crest and a trough are disposed substantially on the same plane as the front and rear surfaces of the edge, respectively, and The spacing may be formed to be less than or equal to the predetermined interval, and the drain groove may be formed in at least one of corners corresponding to the flow path defined by the square wave.

In one embodiment of the present invention, the drain plate may be formed of a plain weave wire mesh having a plurality of points disposed substantially on the same plane as the front and rear surfaces of the edge portion.

In one embodiment of the present invention, the drain plate has a plurality of square rods arranged side by side having substantially the same thickness as any one corner of the edge portion; and a plurality of penetrating rods coupled to orthogonally and penetrating the plurality of square rods, wherein the drain groove may be formed in at least one of corners corresponding to the flow passages defined by the square rods.

In one embodiment of the present invention, the drain plate includes a plurality of cross-shaped rods including a portion having substantially the same thickness as any one corner of the edge portion, wherein the cross-shaped rods are arranged adjacent to each other in parallel and have a gap It may be connected without it.

The plate used in the conventional filter press had the biggest problems in food manufacturing and pharmaceuticals, such as food decay due to foreign substances inside the plate, and residual impurities. The above problems such as corruption have been solved with the structure, and 2) thinner plates can be constructed, so the number of frames and plates that can be included in one filter press increases, so that a much larger amount of liquid to be treated can be processed (filtered). , 3) Since it has a solid structure rather than a conventional thin plate, it is not easily deformed in shape such as dents, which has a remarkable effect of significantly improving productivity.

1 schematically shows the overall shape of a conventional double-layer filter press.
2 exemplarily shows some configurations of a conventional double filter press.
3 is an exploded view of a partial configuration of a conventional double filter press.
4 schematically shows the overall shape of the duplex filter press according to an embodiment of the present invention.
Figure 5 shows the frame of the double filter press implemented with the present invention.
6 is a view showing a plate of a duplex filter press according to an embodiment of the present invention.
7 is an exploded view of a plate of a duplex filter press according to an embodiment of the present invention.
FIG. 8 is a cross-sectional view taken along line A-A' in FIG. 7 .
9 shows a plate of a duplex filter press according to another embodiment of the present invention.
10 shows a plate of a duplex filter press according to another embodiment of the present invention.
11 is an exploded view of a plate of a duplex filter press according to another embodiment of the present invention.
12 to 15 are views illustrating a process for treating a liquid to be treated in a double filter press according to an embodiment of the present invention through some configurations.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 schematically shows the overall shape of the duplex filter press according to an embodiment of the present invention.

Referring to FIG. 4 , the filter press includes a plurality of frames 100 , a plurality of plates 200 , filter paper 300 , a liquid to be treated supply unit 400 , a hydraulic cylinder 500 , a pressure control means 520 , and a head. 600 and a follower 700 .

The frame 100 and the plate 200 are alternately and repeatedly arranged.

The filter paper 300 is disposed between the frame 100 and the plate 200 .

As a means of filtering water, expensive paper material filter paper or natural quality filter cloth has been used, and in the present invention, filter paper will be exemplified.

The target liquid supply unit 400 supplies the target liquid that needs to reduce the moisture content.

The liquid to be treated may be injected into the chamber in various ways. For example, the liquid to be treated may be supplied through a flow path formed by compression of the plurality of frames 100 and plates 200 . As for the flow path, the third flow path part 116 of the frame 100 and the seventh flow path part 216 of the plate 200 form an upper flow path, and the fourth flow path part 118 of the frame 100 and the plate 200 are formed. The eighth flow path part 218 of the , respectively forms the lower flow path. The liquid to be treated supplied to the flow path is to be injected into the chamber (ie, the closed circuit internal space defined by the frame 100 ) through the inlet hole 140 formed between the flow path hole formed in the third flow path part 116 and the chamber. can

The liquid to be treated injected into the chamber is provided with a pressure for supplying the liquid to be treated, and the water contained therein is discharged through the filter paper 300 . Water may be discharged to the plate 200 side after passing through the filter paper (300).

In the plate 200, moisture flows to at least one of the four corners through a predetermined path. The moisture is eventually discharged through the drain hole 240 formed between the inner edge of the plate 200 and the flow passage. For example, water flowing between the inner structures of the plate 200 flows into the fifth flow path part 212 , the sixth flow path part 214 , and the eighth flow path part 218 . Meanwhile, the first passage 112 of the frame 100 , the fifth passage 212 of the plate 200 , the fourth passage 118 of the frame 100 , and the eighth passage of the plate 200 . Reference numerals 218 define long discharge passages on both lower sides as they are in close contact with each other. In addition, the second flow passage 114 of the frame 100 and the sixth passage 214 of the plate 200 define a long discharge passage on one side of the upper portion. As a result, moisture is discharged to the outside of the filter press through the discharge flow path on one upper side and the discharge flow path on both sides of the lower side, which are defined together by the frame 100 and the plate 200 being in close contact with each other.

The hydraulic cylinder 500 provides pressure to the frame 100 and the plate 200 , and this pressure can be adjusted through the pressure control means 520 .

The head 600 is a part serving as a reference surface for pressing the frame 100 and the plate 200 of the filter press and is fixed at the reference position.

The follower 700 may move on the opposite side of the head 600 , including a surface for pressing the frame 100 and the plate 200 .

The follower 700 may move toward or away from the frame 100 and the plates 200 .

The follower 700 moves toward the frame 100 and the plate 200 to transmit the pressure of the hydraulic cylinder 500 to them. The follower 700 also assists the separation of the frame 100 and the plate 200 by moving in the opposite direction. That is, the follower 700 may be sequentially connected to the frame 100 and the plate 200 connected by a connection auxiliary means such as a chain, and may be pulled apart to separate them from each other.

5 shows a frame 100 of a double-duty filter press implemented in conjunction with the present invention.

Referring to FIG. 5 , the frame 100 of the duplex filter press includes a first flow path part 112 , a second flow path part 114 , a third flow path part 116 , a fourth flow path part 118 , and an inlet hole ( 140).

The first flow path part 112 , the second flow path part 114 , and the fourth flow path part 118 are the fifth flow path part 212 , the sixth flow path part 214 and the fourth flow path part of the plate 200 as described above. It is formed to define an exhaust flow path together with the 8 flow path part 218 .

The third flow passage 116 is formed together with the seventh flow passage 216 to define an inflow passage. The liquid to be treated filled through the inflow passage may be filled in the inner space of the frame 100 through the inlet hole 140 formed through the third passage 116 toward the inside of the frame 100 . A space filled with a liquid to be treated or a structure surrounding the space is also called a chamber.

The number and arrangement of the inflow flow path and the discharge flow path can be changed as needed. In one embodiment of the present invention, one inflow flow path and three discharge flow paths are formed.

6 to 8 show the plate 200 of the duplex filter press according to an embodiment of the present invention.

6 to 8 , the plate 200 of the duplex filter press according to an embodiment of the present invention has a lower end 221 , a first side 223 , an upper end 225 , a second side 227 , and a second It includes a fifth passage 212 , a sixth passage 214 , a seventh passage 216 , an eighth passage 218 , a drain plate 230 , a drain groove 232 , and a drain hole 240 . Although not shown in the drawings, a drain groove of the same shape may be formed at an upper position opposite to the drain groove 232 formed at the lower end.

The lower end 221 , the first side portion 223 , the upper end 225 , and the second side portion 227 are connected in a rectangular frame shape to form a closed circuit shape. In the description of the present invention, the connection between the lower end 221 , the first side 223 , the upper end 225 and the second side 227 will be referred to as an edge portion.

The fifth passage 212 , the sixth passage 214 , the seventh passage 216 , and the eighth passage 218 are respectively disposed at four corners of the plate 200 .

Each channel portion may be configured by forming a channel hole inside a rectangle, or may be configured by forming a channel hole in a structure protruding out of a rectangular frame. In the embodiment of the present invention, a flow path portion is constituted by defining a small rectangular region for forming a flow path hole at each corner of the rectangle and forming a round flow path hole in each rectangular region.

The flow path includes a flow path hole for defining a flow path when the plurality of frames 100 and the plurality of plates 200 are in close contact with each other.

Among the four flow passages, the fifth passage 212 , the sixth passage 214 , and the eighth passage 218 are the first passage 112 , the second passage 114 and the second passage 218 of the frame 100 . A discharge flow path through which filtered water is discharged together with the 4 flow path part 118 is defined.

Among the four flow passages, the seventh passage 216 defines an inflow passage through which the liquid to be treated is supplied together with the third passage 116 of the frame 100 .

The drain plate 230 is connected to the inner side of the edge. When the plate 200 is made of metal, the drain plate 230 and the edge portions may be connected and integrated by welding or strong pressure and heat.

The drain plate 230 may structurally define a flow path through which moisture input by the filter paper 300 may flow to at least one corner of the edge portions.

The drain plate 230 may be formed to satisfy the following three conditions for this purpose.

First, there must be a plurality of planes that are substantially coplanar with the front and back surfaces of the edges. This is because the filter paper 300 may be depressed and torn if the depth occupied by the edge drain plate 230 is different. In particular, in recent years, disposable filter paper is used instead of filter cloth, which should be noted because it is less durable than filter cloth. On the other hand, substantially the same plane means that there is not much difference when considering the deformation of the filter paper 300 even if it is not physically completely arranged on the same plane.

Second, the distance between the plurality of planes should be less than or equal to a predetermined distance. A valley (groove) must exist between the plurality of planes to define a space through which moisture introduced after passing through the filter paper flows. However, if the distance between the planes is too wide, the filter paper 300 may be dented therebetween and there is a possibility of tearing, so it should be less than a predetermined interval. That is, the predetermined interval means an interval at which the filter paper 300 is not excessively depressed or torn.

Third, the drain plate 230 should define a flow path to at least one corner of the edge portion. That is, even if there are a plurality of interplanar valleys, they should be connected to each other and flow to any one corner of the edge portion. This is for discharging moisture through a drain groove, which will be described later.

Such a structure may be, for example, a corrugated structure in which ridges and valleys are disposed substantially on the same plane as the front and rear surfaces of the edge, that is, a corrugated cardboard-shaped structure. In this case, the gap between the crest and the crest and the trough may be formed to be less than or equal to the predetermined distance. It is preferable to form the floor and the valley to such a degree that the flat part has a certain length rather than a pointed shape. The wavy shape of the drain plate 230 is repeated along the horizontal line and is combined with the first side part 223 and the second side part 227, and the wave shape extending along the horizontal line itself extends long in the vertical direction to the lower end 221 and It may be coupled to the upper part 225 .

One of the embodiments satisfying the above condition is the drain plate 230 shown in FIG. 6 .

Referring to FIG. 6 , the drain plate 230 may have a structure in which a portion on the same plane as the front surface of the edge portion and a portion on the same plane as the rear surface of the edge portion are periodically repeated with a predetermined interval. That is, the drain plate 230 may have a square wave shape in its cross section.

During the compression operation of the filter press, the moisture that has entered the drain plate 230 may be between the wavy ridges of the drain plate 230 (on the other side, between the valleys. In the present invention, the same plane as the front surface of the edge part) It will be used in the meaning of) and can be moved. That is, the moisture may flow toward the lower end 221 or the upper end 225 .

The moisture should be finally discharged through the fifth flow path part 212 , the sixth flow path part 214 , and the eighth flow path part 218 .

However, it may be difficult to form passages flowing to the fifth passage unit 212 , the sixth passage unit 214 , and the eighth passage unit 218 only by the shape of the drain plate 230 . This is because, as a result of the arrangement of the drainage plate 230 in the vertical direction, horizontal movement is restricted. In order to solve this problem, the present invention has designed a drain groove 232 in at least the lower end 221 . That is, the drain groove serves as a passage to bypass the blocked flow path. Although not shown in the drawings, the drain groove 232 may also be provided in the upper end 225 .

The drain groove 232 may be formed by making a groove on the upper surface of the lower end 221 .

The drain groove 232 defines a flow path connected to the drain hole 240 .

The drain hole 240 may be formed through the inner side of the edge portion and between the fifth passage portion 212 , the sixth passage portion 214 , and the eighth passage portion 218 , respectively. It is sufficient if the shape of the drain hole 240 is defined so that the water flowing down or rising on the inner edge of the edge, that is, on the drain plate 230, and flowing into the drain groove 232 can reach the flow passage as well as the above-described shape.

9 shows a plate 200 of a duplex filter press according to another embodiment of the present invention.

The difference between the embodiment in FIG. 9 and the embodiment in FIGS. 6 to 8 is in the shape of the drain plate 230 .

The drain plate 230 may be formed of a plain weave wire mesh having a plurality of points disposed substantially on the same plane as the front and rear surfaces of the edge portions.

A plain weave wire mesh is formed by alternating thin metal wires. Such a shape may be achieved by, for example, arranging a plurality of metal lines in a vertical direction, arranging other metal lines horizontally, and repeatedly passing the metal lines arranged in the vertical direction upward and once downward.

It may be more preferable that the plurality of points disposed on the same plane as the front and rear surfaces of the edge portion are formed in a plane having a predetermined area. For this purpose, the plain weave wire mesh formed by staggering may be compressed with a strong physical force to form the drain plate 230 . Here, the plurality of points disposed substantially on the same plane as the front surface and the rear surface may be points at which the metal lines intersect each other.

In this embodiment, since the metal wires are arranged in a cross shape to create a space, the filtrate (moisture) passing through the filter paper 300 into this space can move to the lower end 221 and the upper end 225 . Thereafter, moisture may be discharged to the outside through the drain groove 232 and the drain hole 240 .

10 and 11 show a plate 200 of a duplex filter press according to another embodiment of the present invention.

The difference between the embodiment in FIGS. 10 and 11 from the previous embodiment lies in the shape of the drain plate 230 .

The drain plate 230 may have a plurality of rods extending in a cross shape adjacent to each other and arranged in rows. A plurality of adjacent rods are connected to each other without gaps (ie, at least not leaking filtrate or moisture) through welding, pressing, or the like.

The front and rear surfaces of the cross shape are placed on substantially the same plane as the front and rear surfaces of the edge, respectively, and the interval between adjacent planes is set to approximately 2 mm to 5 mm to prevent the filter paper 300 from being easily dented.

In a plan view, the cross-shaped horizontal portion may serve as a bottom surface of the groove having a predetermined depth with respect to the front and rear surfaces of the edge portion, respectively. The moisture introduced into the drain plate 230 may flow upward or downward along the groove.

12 to 15 are views illustrating a process for treating a liquid to be treated in a double-type filter press according to an embodiment of the present invention.

Referring to FIG. 12 , the liquid to be treated is supplied to the chamber through the inlet hole 140 penetrating between the passage hole formed in the third passage portion 116 formed in the frame 100 and the chamber.

13 is a view showing the flow of the liquid to be treated superimposed on the plate 200 and the two adjacent frames 100 when viewed from the left side of the pressed frame. The liquid to be treated receives a force to expand inside the chamber by the supply pressure, whereby moisture passes through the filter paper 300 and moves to the drain plate 230 of the plate 200 .

Referring to FIG. 14 , the moisture provided to the drain plate 230 of the plate 200 follows the above-described predetermined path to a fifth flow path part 212 , a sixth flow path part 214 , and an eighth flow path part 218 . can be emitted as

15 is a view showing the flow of water (filtrate) superimposed on a certain plate 200 and two adjacent frames 100 when viewed from the right side when the two frames 100 adjacent thereto are compressed. After the moisture is discharged into the fifth and sixth passages 212 and 214 , respectively, the fifth and first passages 212 and 112 , and the sixth and second passages 214 and 214 , respectively. It may be discharged to the outside through a flow path defined by the flow hole formed in the parts 114 .

The plate of the duplex filter press according to an embodiment of the present invention has a single drain plate structure (in terms of not requiring mechanical assembly), and both the front and rear surfaces of the drain plate can be accessed without disassembly from the outside, so cleaning is easy. one effect.

In addition, since the thickness of the plate itself can be reduced by forming the drain plate as a single structure, a large amount of liquid to be treated can be treated in one treatment process.

In addition, since a double network structure is not adopted as in the prior art, a specific portion is not depressed by the pressure of the liquid to be treated. Therefore, the present invention has a structurally stable effect.

In particular, since the prior art adopts a structure in which a perforated network is formed on the front and rear surfaces of the plate, dirt and debris are easy to remain. , the present invention has the effect that it is not necessary to release the coupling by taking the form of a drain plate of a single structure, and the washing operation can be completed very easily and quickly only by washing with water and washing with a brush from both sides.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

100: frame
112: first euro unit
114: second euro part
116: 3rd euro part
118: 4th Euro Division
140: inlet hole
200: plate
212: 5th euro part
214: 6th Euro Division
216: 7th Euro Division
218: 8th Euro Division
221: lower part
223: first side
225: upper part
227: second side
230: drain plate
232: drain groove
240: drain hole
300: filter paper
400: to-be-processed liquid supply part
500: hydraulic cylinder
520: pressure control means
600: head
700: Followers

Claims (5)

an edge portion forming a closed circuit shape including a lower end portion, a first side portion, an upper portion, and a second side portion formed along each side of the rectangle;
at least two or more passage portions including passage holes for defining passages when the plurality of frames and the plurality of plates are brought into close contact;
a drain hole which is a passage for discharging the filtrate filtered through the plate to at least one of the passage holes; and
a drain plate connected to the inner surface of the edge portion and having a structure satisfying all of the following conditions;
Condition 1) There must be a plurality of planes arranged on the same plane as the front and rear surfaces of the edge part.
Condition 2) The distance between the plurality of planes should be less than or equal to a predetermined distance
Condition 3) The drain plate defines a flow path to at least one of the lower end, the first side, the upper end, and the second side.
The drain plate is
The ridges and troughs are respectively disposed on the same plane as the front and rear surfaces of the edge portion, the cross section forms a square wave, and the ridges and ridges and the ridges and troughs are formed to be less than the predetermined distance,
the lower part,
A drain groove is formed on the upper surface and is connected to the flow path defined by the drain plate,
The drain groove is a plate of a double filter press, characterized in that it defines a flow path from the surface where the drain plate and the drain groove meet to the surface where the drain hole is defined.
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