JPS6388010A - Filter body of filter press - Google Patents

Abstract

PURPOSE:To uniformize the filtering pressure in a filter chamber, by constituting a filter plate only of a frame body and providing not only a raw liquid supply port in opposed relation to the space of filter cloth surrounded by the frame body being the filter plate but also a filtering pressure adjusting port to the filtering part of the filter cloth corresponding to the filtering part of the filter plate. CONSTITUTION:A raw liquid is supplied to the raw liquid supply port 19 of the filter cloth 4 of each filter plate 1 from a raw liquid supply pipe 10a or 13a and introduced into the filter chamber 8 formed between each pair of filter cloths 4, 4 between adjacent filter plates 1, 1 under pressure from each raw liquid supply port 19. The raw liquid in each filter chamber 8 freely goes in and out between said chamber 8 and the adjacent filter chamber 8 through each filtering pressure adjusting port 16 to almost equalize the filtering pressure in each filter chamber 8. The raw liquid supplied in the filter chamber 8 is filtered by the filter cloth 4 to be separated into a cake and a filtrate. The cake is held in the filter chamber 8 between a pair of the filter cloths 4 as it is and the filtrate passes through the filter cloth 4 and flows down from the internal space 2a between the filter cloths 4, 4 to be recovered.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention comprises a filter plate and a pair of filter cloths arranged before and after the filter plate.1. When a plurality of filter presses are arranged adjacent to each other and then tightened, the stock solution is supplied into the r chamber formed between a pair of filter cloths sandwiched between adjacent filter plates, and one filtration is performed. Concerning structural improvements.

2. Description of the Related Art Conventionally, it has been generally known that filter bodies of this type of filter press have various structures.

One typical example is to construct an IP temporary by integrally fixing the r weekend in a rectangular frame, and placing a pair of filter cloths before and after the Pk, and each of the above is connected to the cloth and the r weekend. There is one formed by forming a stock solution supply port that penetrates on the weekend. For example, a large number of such filter bodies are arranged between the front and rear stands, and after tightening all the filter bodies on the front stand side with a movable plate placed behind the rearmost filter body, the stock solution is poured into the P plate. There is one in which filtration is carried out by supplying from the stock solution supply port and the stock solution supply port of the filter cloth into the f chamber formed between a pair of filter cloths sandwiched between adjacent r plates.

Problems to be Solved by the Invention However, in the structure described above, there is only one stock solution supply port passing through the temporary filter bed and each filter cloth. The filtration pressure is highest in the area around the stock solution supply port, while the filtration pressure is low in the area near the frame of the filter bed that is far from the stock solution supply port, making the filtration pressure uneven in each room. There was a problem with poor filtration efficiency.

Therefore, the inventor proposed that if a filtration pressure adjustment port is formed in the filter bed and each cloth separately from the stock solution supply port, and the adjacent filter chambers are communicated with each other, the stock solution will be supplied from the stock solution supply port into the P chamber. They found that the filtration pressure in the R chamber could be approximately equalized by allowing the stock solution to freely move in and out between the adjacent R chambers through the filtration pressure adjustment port. If the filtration conditions are different, the degree of non-uniformity of the filtration pressure in each chamber F will be different, so it is necessary to change the position and number of the filtration pressure adjustment ports. If the filtration pressure adjustment port is formed in the filtration bed of the conventional R plate as described above, together with the stock solution supply port, it is necessary to remove the entire T plate along with the R cloth from between the front and rear stands each time the filtration conditions change. This creates a problem in that the removal work becomes extremely complicated.

Therefore, the inventor of the present invention further developed the idea of configuring PIJfi from a frame body and eliminating the filtration bed, and by forming the stock solution supply port and filtration pressure adjustment port in cloth, both of the above problems could be solved. We have also found that this can be effectively resolved.

Therefore, an object of the present invention is to solve the various problems mentioned above, and to make it possible to approximately equalize the filtration pressure in each room, and to easily adjust the filtration pressure depending on the filtration conditions. An object of the present invention is to provide a filter press that can improve filtration efficiency.

Means for Solving the Problems In order to achieve the above object, the present invention consists of each f-plate consisting only of a frame body, and the f-plates of each filter cloth are arranged so as to face the space surrounded by the frame body of each f-plate. In addition to forming a stock solution supply port in the filter, a filtration pressure adjustment port was formed in one filter portion of each filter cloth corresponding to the filter portion of each R plate. That is, the T-plate consists of a frame body surrounding a vortex part, and a pair of filter cloths placed before and after the plate and sandwiching the filtration part, and the filter cloths are arranged adjacent to each other and then tightened. At this time, a filter body of a filter press is formed in which an R chamber for filtering the stock solution is formed between a pair of filter cloths sandwiched between adjacent R plates, and the frame of the F plate of each of the filter cloths is A through hole is formed at a predetermined position facing the space surrounded by the body, and peripheral edges of both through holes of a pair of filter cloths facing each other with the R plate in between are fixed to each other to form a stock solution supply port. At the same time, a through hole smaller in diameter than the stock solution supply port is formed in one filter portion of each filter cloth corresponding to the filtration part in the frame of the R plate, and a through hole is formed in a pair of filter cloths facing each other with the F plate in between. The peripheral edges of both through holes are fastened together to form a filtration pressure adjustment port.

Effect of the Invention In the above configuration, after a large number of T-plates are arranged adjacent to each other and tightened together, the stock solution is supplied from the stock solution supply port of the filter cloth into the F chamber between a pair of filter cloths sandwiched between adjacent R-plates. hand,
Perform filtration. In each chamber, the stock solution freely flows in and out of the adjacent R chamber through the filtration pressure adjustment port, thereby approximately equalizing the filtration pressure in each P chamber.

Embodiments of the present invention will be described in detail below with reference to FIGS. 1 to 27.

The first example is shown in Figures 1 to 3, the second example is shown in Figures 4 and 5, the third example is shown in Figures 6 to 8, and the fourth example is shown in Figures 9.10.
The fifth embodiment is shown in Fig. 1f-13, the sixth embodiment is shown in Figs. 14-16, the seventh embodiment is shown in Figs. In addition, the ninth example is shown in the twenty-first to second examples.
3, the 10th embodiment is shown in FIGS. 2.1 to 26, and the 11th embodiment is shown in FIG. 27, respectively.

As shown in FIG. 1.2.3, the f-week body 15 according to the first embodiment includes a frame 2 and a sheet-like door liquid discharge guide member 3 swingably supported within the frame 2. and a pair of T cloths 4.4 arranged on both sides of the frame 2 in the thickness direction and surrounding the space 2a inside the frame 2, and each filter cloth 4 has a stock solution supply port 19.
and three filtration pressure adjustment ports 16. ..., 16, and when a plurality of filter bodies 15 are arranged adjacently and then tightened together, a pair of r cloths 4.4 sandwiched between adjacent f plates 1.1. The stock solution is pressurized into the f chamber 8 formed by the stock solution supply port 19 of each filter cloth 4, and the stock solution can freely enter and exit between the adjacent chambers 8 and 8 through each filtration pressure adjustment port 16. The above stock solution is filtered in each F chamber 8 while approximately equalizing the filtration pressure of 8, and while the cake is held in the R chamber 8 between the filter cloths 4 and 4, the F liquid is passed through each door cloth 4 and passed through each frame. The R liquid is collected in a space 2a in the P liquid discharge guide member 3, and is caused to flow down to the bottom of the frame body 2 and collected.

The frame body 2 is a member whose horizontal and vertical cross sections are pentagonal in shape, and the inner surface has inclined surfaces 2e that are inclined from the center in the thickness direction to both sides.

It has 2e. A handle 2b is provided near the center of each side of each frame 2, and the handle 2b is attached to a side beam 12 installed on each side between the front and rear stands 10.2 of the filter press.
are slidably placed on each frame body 2 to suspend and support the frame body 2 to guide the back and forth movement of each frame body 2. An ear 2f is formed at each lower part of the side surface of the frame 2, and an f liquid recovery port 2c penetrating in the thickness direction is formed in the ear 2f. A communication hole 2d is formed that communicates the space 2a as a t-recessed part formed inside the body 2 with the r-liquid recovery port 2c. A curved portion 2g curved in an inverted U shape is formed at the center of the upper part of the frame 2, and an internal space 2h of the curved portion 2g is communicated with the space 2a of the frame 2.

The filter cloths 4 are replaceably arranged on both sides of the frame 2 in the thickness direction (both sides in the front and back direction of the filter press), and sandwich a space 2a formed inside the frame 2.

Examples of how each door cloth 4 can be arranged in a replaceable manner include a method of suspending and supporting it on a temporary frame 2 using a hook member such as a pin;
A method of suspending and supporting with a suspension support device placed above the front and rear stands 10.11, one large F-heavy body is placed over the R-board 1 from above, and a pair of T-cloths 4.4 are placed in front and behind the R-board 1. Various conventionally known methods can be applied. A circular through hole 4a is formed at a position corresponding to the space 2h of the curved portion 2g of the frame 2, and the through holes 4a, 4 of a pair of r cloths 4.4 facing each other via the f plate l are formed. The undiluted solution supply port 19 is formed by sewing the peripheral edges of a to each other. In addition, the portion of each filter cloth 4 corresponding to the t-recessed portion of the frame 2 of bP tentatively includes:
Three filtration pressure adjustment through holes lb, . . . , 4b are formed so as to indicate the positions of the apexes of the inverted triangle.

The f-liquid discharge guide member 3 is made of a rectangular cloth having approximately the same shape as the space 2a inside the frame 2.
The outer peripheral edge of the r-liquid discharge guide member 3 and the frame 2
A gap is formed at a constant interval between the inner surface 2e and the inner surface 2e, and both the front and rear surfaces thereof are molded with r cloth 4.4. This f-liquid discharge guide member 3 includes through holes 4 for adjusting the filtration pressure of the filter cloth 4.
Three filtration pressure adjustment through holes 3a, corresponding to b, respectively.
, form 3a. It is preferable that the f-liquid discharge guide member 3 has a certain degree of stiffness.
The liquid discharge guide member 3 can be positioned along the lower surface of the main road within the frame body 2 even if only the peripheral edge of the through hole 3a is supported and the upper part thereof is not supported. Liquid discharge guide member 3
The material may be any material such as natural materials, synthetic resins, or metals, but thick cloth with open weave is preferred, and light material is preferred. Alternatively, the IF5 may be made of synthetic resin, metal such as aluminum, wood, etc. in the form of a net or lattice. The front shape of the r-liquid discharge guide member 3 is square, but is not limited to this and may be any shape such as circular or triangular. Further, the thickness of the liquid discharge guide member 3 may be arbitrary, and the thicker the thickness, the larger the distance between the filter cloths 4, 4, and the better the ff liquid discharge performance.
The number of sheets is not limited to one, but may be any number. Moreover, if a plurality of liquid discharge guide members 3 are stacked to form a plurality of layers, the r cloths 4.4 facing each other in the space 2a of the frame body 2 can be
Gaps are more likely to form between the two, which can further improve the ability to drain the liquid. Further, as a method of suspending and supporting the liquid discharge guide member 3 on the body 15, it may be suspended and supported directly from the side surface of the frame of the filter cloth 4 or indirectly through a cloth or the like. Further, if the r-liquid discharge guide member 3 is made of an elastic material, it can absorb the uneven pressure by deforming itself. Furthermore, even if the f-liquid discharge guide member 3 is a rigid body, if it is attached to the r cloth 4 or the frame body 2 so that it can swing, even if uneven pressure acts on the liquid discharge guide member 3, it will not be affected. This can be absorbed by swinging the member 3. Further, the rigid one-liquid discharge guide member 3 can also apply vibration to the r-cloth 4 to promote removal of the cake attached to the r-cloth 4. Further, the liquid discharge guide member 3 is not limited to a material such as cloth having holes through which the f-liquid passes, but may be a sheet-like material having no holes at all.

The above-mentioned overpressure adjustment port 16 is connected to the peripheral edge of each pair of overpressure adjustment through-holes 4b, 4b of the filter cloth 4 and the f-liquid discharge guide member 3.
After closely contacting the peripheral edge of the through-hole 3a for overpressure adjustment, the eyelet fittings 14 are fitted into the R cloth 4, and the pair of T cloths 4 are attached.
, 4 are formed in such a way as to sandwich them. The eyelet fitting 14 prevents the raw solution from entering between the cloths 4 and 4 at the filtration pressure adjustment port 16, and also suspends and supports the r-liquid discharge guide member 3 on the filter cloth 4. The liquid discharge guide member 3 is made swingable.

This r overpressure adjustment port 16 must be formed in the filtration part in order to adjust the filtration pressure, but the number and position thereof are determined by filtration conditions such as the properties of the stock solution, the stock solution supply pressure, and the filtration area of the frame 2. determined by

In addition, the overpressure adjustment ports 16 do not necessarily have to be arranged evenly with respect to the filtering portion of each filter cloth 4, and
5 are arranged adjacent to each other, there is no need for the r overpressure adjustment ports 16 to communicate in a substantially straight line along the arrangement direction like the stock solution supply port 19. The size of the filtration pressure adjustment ports 16 may be, for example, about 5 to 30 mm, preferably as small as possible so as not to reduce the excess area, and the number may be about 2 to 4. Overpressure adjustment port! The shape of 6 may be any shape other than circular, hexagonal, quadrangular, etc. In addition, when forming the f-hydraulic pressure adjustment port 16, it can be easily formed by using the eyelet fitting 14, but instead of this eyelet fitting 14, both filter cloths 4, 4 are sandwiched between a pair of plate-shaped annular members. The ring member may be removably fixed to the filter cloth 4 using bolts or the like.

In FIG. 3, 10a is a stock solution supply pipe formed at the center of the upper part of the front stand 10, lOb is a t-liquid collection pipe formed at each side of the lower part of the front stand 10, and 13a is a pipe at the upper center of the movable plate 13. The stock solution supply pipes 3b thus formed are f-liquid recovery pipes formed on each side of the lower part of the movable plate 13, respectively.

The above configuration operates as follows. A large number of the above r
Part 15. . . , 15 are arranged adjacently between the face stands 10 and 11, and each P4121 is installed on the side between both stands 10 and 11 so as to be movable back and forth.
A large number of P plates 1 are suspended and supported by the movable plate 13 by moving forward.
．． After tightening ■ to the front stand side, the stock solution is supplied from the stock solution supply pipe 10a or 13a of the front stand 10 or movable plate 13 to the stock solution supply port 19 of the filter cloth 4 of each P plate 1, and each stock solution is It is press-fitted from the supply port 19 into the r-chamber 8 formed between each pair of r-cloths 4, 4 between the adjacent f-plates 1.1. In each R chamber 8, the stock solution freely flows in and out between each R chamber 8 and the adjacent R chamber 8 through the overpressure adjustment port 16, so that the filtration pressure within each R chamber 8 is approximately equalized. The stock solution supplied to the r chamber 8 is filtered through each filter cloth 4 and separated into a cake and a t-liquid.

The cake is held as it is in the r chamber 8 between each pair of filter cloths 4, 4, while the r liquid passes through each r cloth 4 between the filter cloths 4.4 and within the internal space 2a of the frame 2. It flows downward under the guidance of the f-liquid discharge guide member 3, flows into the t-liquid collection port 2c from the communication hole 2d at the lower part of the frame 2, and is collected from the f-liquid collection pipe Job or 13b. - When the filtration process is completed, the movable plate 13 is moved back and each PFi,
1 is moved back to open the frame, and the cakes held by each pair of R cloths 4.4 are collected.

According to the above embodiment, since the overpressure adjustment ports 16 are individually formed at the retracted portion of the frame 2, the stock solution and gas generated from the stock solution can easily enter and exit through each filtration pressure adjustment port 16. This makes it possible to substantially equalize the supply pressure of the stock solution supplied into the F chamber 8 at the same time as the stock solution supply, that is, the filtration pressure throughout the filter chamber, and also to substantially equalize the filtration pressure between adjacent filter chambers 8 and 8. −
can be converted into Therefore, even if the number of r chambers increases, the difference in stock solution supply pressure between the first chamber 8 on the stock solution supply side and the r chamber 8 on the opposite side to the stock solution supply side becomes smaller, and a substantially constant level is applied to each r chamber 8. The raw solution supply pressure and therefore the filtration pressure can be applied, and the r-perturbation rate can be improved. In addition, each f-board I is constructed from only the frame body 2, and a filtration pressure adjustment port I6 is formed in the filtration part of the r-cloth 4 corresponding to the filtration part of the frame body 2 of the f-board 1, and each filter cloth 4 is Since the arrangement is replaceable, when changing the adjustment of the filtration pressure depending on the properties of the stock solution and filtration conditions such as filtration pressure, the r-liquid discharge guide member 3 can be replaced while the P plate 1 is arranged between the front and rear stands 10.2. It is sufficient to replace only the supported filter cloth 4 with a T-cloth 4 having a different number or position of the filtration pressure adjustment ports 16. Therefore, the number and position of the filtration pressure adjustment ports 16 can be easily adjusted, and a drop in the stock solution supply pressure can be effectively prevented, and the filtration efficiency can be improved. In addition, since no filtration pressure was created within the frame 2 of the plate 1, and the fabric serving as the f-liquid discharge guide member 3 was simply suspended and supported on the filter cloth 4, no filtration pressure was created within the frame 2. It is much lighter than the conventional one. In addition, since the f liquid discharge guide member 3 is supported within the frame 2 between the filter cloth 4 and the r cloth 4, the f liquid discharge guide member 3 is provided between the r cloth 4 and the filter cloth 4. The r-liquid that has passed can be transmitted to the lower part of the frame 2 by the r-liquid discharge guide member 3 to ensure that it flows down, and the liquid can be smoothly recovered. . In addition, since the f-liquid discharge guide member 3 is swingably supported together with the t-cloth 4, in the unlikely event that
Even if biased pressure acts on the r-liquid discharge guide member 3, this can be absorbed by the rocking of the member 3, so that the member 3 is not damaged. Furthermore, since the liquid discharge guide member 3 is made of elastic fabric, the uneven pressure can be absorbed by deformation of the liquid discharge guide member 3 itself.

Next, the t-adic field 15 according to the second embodiment will be explained. In the following embodiments, the same members as those explained in the first embodiment are given the same reference numerals, and the explanation thereof will be omitted. The f weekly holiday 15 shown in Fig. 4.5 is of the so-called bottom feed type, and a curved part 2g is formed in the lower central part of the frame 2 of the f plate l, and the space 2h of the curved part 2g is filled. r cloth 4
A stock solution supply port 19 is formed. On the top of this r cloth 4,
One filtration pressure adjustment port 16 is formed in each part of the filtration part roughly bisected by a bisector line along the vertical direction, and each adjustment port 16 adjusts the filtration pressure in the half part of the t-recessed part. Make sure to do it individually. Each filtration pressure adjustment port 16 is connected to a pair of filter cloths 4.
The peripheral edges of both the filtration pressure adjustment through holes 4b, 4b of 4 are overlapped and sewn to the peripheral edges of the r overpressure adjustment through hole 3a of the f liquid discharge guide member 3, and the above is sewn with a cloth. 4 and tora ni f
The liquid discharge guide member 3 is made swingable. The f-liquid discharge guide member 3 is suspended and supported on one of the t-cloths 4 by the above-mentioned sewing, and the upper and lower edges of the r-liquid discharge guide member 3 are tied to suspension strings 17. . . , is suspended and supported by the frame body 2 at 17.

The filtration pressure adjustment port 16 does not use eyelet fittings, so it will not rust. Furthermore, if the f-liquid discharge guide member 3 is directly sewn to the filter cloth 4 and suspended, the size of the mesh of the t-cloth 4 in the sewn part becomes uneven compared to the mesh in other parts.
The hypermobility rate will be reduced, but as mentioned above, the peripheral edge of the stock solution supply port I9 of the filter cloth 4 and the through hole 3 of the r-liquid recovery portion 3
At the same time, the upper edge of the f-liquid discharge guide member 3 is sewn to the frame 2 with the hanging cord 17. . . , if the fabric is suspended and supported by 17, the size of the mesh of the fabric 4 will not be affected, and the overmotion rate will not decrease.

Further, a third embodiment is shown in Fig. 6.7.8. This filter body 15 has filtration pressure adjustment ports 16 formed in the filter cloth 4 at the top and bottom of the central part of the filtration section of rFi, t, respectively, and the filtration pressure adjustment port 16 is formed in the filter cloth 4 so as to avoid the part where the filtration pressure adjustment port 16 is formed. The rectangular R liquid discharge guide members 3.3 are arranged in the frame 2, and each F' liquid discharge guide member 3 is connected to one of the filter cloths 4 through the cloth 18 by its upper edge. Constructed with hanging support. In the third embodiment, the filtration action of the area surrounding the e overpressure adjustment port 16.16 in the frame 2 and the area including the P liquid discharge guide member 3°3 excluding the surrounding area are approximately the same. Overall, you can spend about 1 hour on average.

Further, a fourth embodiment is shown in FIGS. 9 and 10. This filter body 1
5, the r-liquid discharge guide member 3 having a substantially square shape that is sufficiently smaller than the filtration part is arranged between a pair of r-cloths 4.4 that sandwich the frame body 2, and is used for adjusting the filtration pressure of each filter cloth 4. Penetration port 4b
The eyelet fitting 14 is inserted into the filtration pressure adjustment through-hole 3a of the r-liquid discharge guide member 3 and fixed, and the filtration pressure adjustment port 16 is fixed.
It forms. The area around the filtration pressure adjustment port 16 tends to have a higher filtration pressure than other areas other than the area around the stock solution supply port, and filtration is more likely to be carried out, so that cake tends to adhere to the r-cloth 4 in this area. Therefore, by arranging the r-liquid discharge guide member 3 as described above, it is possible to improve the discharge performance of the P-liquid that has been filtered and separated from the cake by the -pair of t-liquid discharge guide members 3 having the weight of the t-cloth. At the same time, the vicinity of the filtration pressure adjustment port 16 can also be reinforced.

Also, the fifth example is the first! - Shown in Figure 13. This filter body 15 has a frame body 2° of a P plate 1° formed into a substantially circular shape. The method of supplying the stock solution is a so-called top feed type in which a stock solution supply port 19 is formed at the top of each r cloth 4 corresponding to the inside of the curved portion 2g at the top of the frame. The liquid discharge guide member 3 is made of rectangular cloth, and its upper edge is connected to a hanging cord 17.・
. . , 17 is suspended and supported by the frame 2°. The above-mentioned overpressure adjustment port 16 is connected to the above-mentioned R liquid discharge guide member 3.4 of the cloth 4.4.
Eyelet fittings 14 and 14 are used at both ends of the filter section without the filtration section 3, respectively, and are formed in the same manner as described above.

A sixth embodiment is shown in FIGS. 14-16. This filter body 15 has a gap retaining member 5 attached to the upper part around the through hole 3a of the r liquid discharge guide member 3, and a t cloth 4
．． A gap is maintained at a constant interval between the filter cloths 4 and 4 to make it easier for the f liquid to enter the inside of the frame body 2 from the filter cloth 4. As shown in detail in FIG. 15, this gap holding member 5 connects the convex portion 5b of one divided body 5a to the small hole 3b of the P liquid discharge guide member 3.
11 and fit into the hole 5d of the other divided body 5c to attach it to the r-liquid discharge guide member 3. The gap retaining member 5 is not limited to the one in the above embodiment, but may have any shape such as an abacus-shaped one divided into two, a cylindrical body, a prism, or an annular plate shape, and can be arranged in any number and at any position. You can. Moreover, the material may be any material such as metal, wood, synthetic resin, etc. Further, the gap holding member 5 may be attached to the right side of e.

In addition, in this sixth embodiment, the upper part of the pair of r cloths 4, 4 is attached with a bolt 9. . . , are mutually fixed by 9.

In the seventh to eleventh embodiments, the filter body 15 is of a type in which the f-liquid discharge guide member 3 is not disposed between the filter cloths 4 and 4 and within the frame body 2.
shows.

First, a seventh embodiment is shown in FIGS. 17 and 18. This filter body 15 is of the above-mentioned so-called center feed type. This stock solution supply port! Place the above eyelet fittings 1 evenly around 9.
4 respectively formed using the above-mentioned filtration pressure adjustment port 1
Place 6.

The eighth embodiment is shown in Figures 19 and 20. This filter body 15 is of a so-called bottom feed type, and has two filtration pressure adjustment ports 16 and 16 diagonally in the filtration part of the frame body 2.
are formed using the eyelet fittings 14 and 14, respectively.

A ninth embodiment is shown in FIGS. 21-23. The filter body 15 is of a so-called bottom feed type, and has a long, substantially rectangular filtration pressure adjustment port 16' in the filtration portion of the frame body 2, and a substantially rectangular shape that is shorter than the adjustment port 16°. The filtration pressure adjustment ports 16'' are arranged in pairs to form a substantially T-shape.Each filtration pressure adjustment port 16', 16'' is arranged in pairs.
teeth? Cloths 4, 4 (7) Opposing through holes 4 b for adjusting filtration pressure
, 4b is formed by sewing around the periphery. In this way, the following effects can be achieved. That is, conventionally,
In a stock solution containing particles with large sedimentation properties, the stock solution generally tends to accumulate in the lower part of the f chamber 8, and if only one stock solution supply port 19 is formed in the lower part as in the ninth embodiment, the stock solution supply port 19 will not be immediately accessible. I often got stuck.

However, the above-mentioned overpressure adjustment 016 is performed near the stock solution supply port I9.
If multiple filtration pressure adjustment holes 16° and 16° are formed in the upper part, even for the above-mentioned stock solution, the filtration pressure can be adjusted in the lower part.
Even if the stock solution supply port 19 is clogged, the stock solution can be supplied to the next F chamber 8 through the filtration pressure adjustment holes 16' and 16°. On the other hand, it is possible to fill the
At the top, the filtration pressure is adjusted by 16' and 16°.
The stock solution supply pressure, that is, the filtration pressure to the filtration part of the plate 1 can be adjusted to be almost uniform.

The first embodiment is shown in FIGS. 24-26. This f-adic field 15
is of the so-called center-feed type, and has one plate 1" consisting of a circular frame 2", and a stock solution supply port 19.
The above-mentioned filtration pressure adjustment port 16' has a long, substantially rectangular shape in a V-shape and is vertically symmetrical so as to surround the filtration pressure adjustment port 16'.

16°. Each filtration pressure adjustment port 16° is an opposing filtration pressure adjustment through-hole 4b of the filter cloth 4.4.

It is formed by sewing the periphery of 4b. Further, the r cloth 4.4 is placed on both sides of the r plate 1'' by covering the frame 2'' from above with one large f heavy body 4°.

An eleventh embodiment is shown in FIG. 27. This f-adic body 15 is a modification of the f-adic body 15 shown in FIG.
°° is made by simply forming a notch in the r cloth 4 and sewing the circumference of the notch, and by the supply pressure of the stock solution, the t cloth 4 at the notch part is opened to act as a filtration pressure adjustment port. This is what I did. According to this adjustment port 16"°, it is sufficient to simply make a notch in the filter cloth 4, so there is no need to cut out an opening forming part of a predetermined shape from the filter cloth 4, and it is easy to form the adjustment port, and The adjustment port is larger than the case where the adjustment port is formed as an opening.

Note that this adjustment port 16"' can be easily opened by the pressure of the stock solution.
Since the cut portion of the cloth 4 can be opened, there is no large pressure loss in the supply pressure of the stock solution.

Any of the embodiments described above can fully achieve the intended purpose of the present invention.

Effects of the Invention According to the above structure, since the filtration pressure adjustment ports are formed in the filtration part of the frame, the stock solution and gas generated from the stock solution can easily enter and exit through each filtration pressure adjustment port, and the stock solution supply is improved. At the same time, the supply pressure of the stock solution supplied into the room, that is, the filtration pressure, can be approximately equalized throughout the f room, and the adjacent f
The filtration pressure can be adjusted between rooms, and the filtration pressure can be approximately equalized between adjacent rooms, and the stock solution can be reliably supplied to each room, eliminating uneven supply of the stock solution. . Therefore, even if the number of rooms increases, the difference in stock solution supply pressure between room f on the stock solution supply side and room r on the opposite side to the stock solution supply side becomes small, and the stock solution supply pressure to each room f remains approximately constant. Therefore, filtration pressure can be applied and filtration efficiency can be improved. In addition, each F plate is constructed from only a frame body, and a filtration pressure adjustment port is formed in the filtration part of the T cloth corresponding to the r retracted part of the frame body of the R plate, and each filter cloth is arranged to be replaceable. Therefore, when changing the adjustment of the filtration pressure, i.e., the position of the filtration pressure adjustment port, g-loss, etc., depending on the properties of the stock solution and filtration conditions such as the filtration pressure, the f-liquid can be discharged while the r-plates are arranged between the front and rear stands of the filter press. It is sufficient to replace only the filter cloth supporting the guide member with an R cloth having a different number or position of filtration pressure adjustment ports. Therefore, the number and position of the filtration pressure adjustment ports can be easily adjusted, and a drop in the stock solution supply pressure can be effectively prevented, thereby improving the filtration efficiency. In addition, the difference between the filtration pressure around the stock solution supply port and the filtration pressure in other parts of each cloth becomes small, and it becomes difficult for large biased pressure to act on the parts around the stock solution supply port. There is less damage to the filter cloth and the life of the filter cloth is extended. In addition, since no filtration pressure is created within the frame of the f-board, it is much lighter than conventional products that create filtration pressure within the frame, and even if unbalanced pressure acts, the filter cloth will only be biased. It will not be damaged. That is, in the conventional P plate having a filtration pressure, the filtration pressure may be damaged when a biased pressure is applied because the filtration pressure is a rigid body.

Therefore, the present invention can fully achieve its intended purpose.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of a filter according to the first embodiment of the present invention, and FIG. 2 is a cross-sectional side view taken along the line ■-■ in FIG. , FIG. 3 is a partially cutaway side view of the filter press using the f-week holiday, FIG. 4 is a partially cutaway pressure surface view of the filter of the second embodiment, and FIG.
6 is a partially cutaway front view of the filter body according to the third embodiment, and FIGS. 7 and 8 are a sectional view taken along ■-V in FIG.
9 is a partially cutaway front view of the filter cloth and r-liquid discharge guide member of the fourth embodiment;
The figure is a sectional view taken along the X-χ line in FIG. 9, FIG. 11 is a partially cutaway front view of the filter body according to the fifth embodiment, and FIGS. and A cross-sectional side view and a front view of the main part of the guide member, FIG. 17 is a front view of the f-week holiday of the seventh embodiment, and FIG.
The figure is a sectional view taken along the line X--X in FIG. 17, FIG. 19 is a front view of the filter body according to the eighth embodiment, and FIG.
FIG. 21 is a front view of the f-week holiday of the ninth embodiment, and FIGS. 22 and 23 are a cross-sectional view along the xxn-x FIG. 24 is a front view of the filter body according to the tenth embodiment, and FIGS. 25 and 26 are cross-sectional views taken along lines XX■-XXV and XXVR- of FIG. 24, respectively.
xxvr line cross-sectional view, FIG. 27 is for the 11th embodiment.
It is a front view of an overbody. l, v, v-c board, 2, 2°, 2”... frame, 2a
...Space, 2b...Handle, 2c...F liquid collection port,
2d... communicating hole, 2e... inner surface, 3... f liquid discharge guide member, 3a... through-hole for overpressure adjustment, 3b...
Small hole, 4...filter cloth, 4...f heavy body, 4a...through hole, 4b...through hole for overpressure adjustment, 4C...circular portion, 5...gap maintenance Members, 5a, 5b... divided body,
8...r room, 9...port, 10.11...front and rear stands, IOa, 13a...stock solution supply pipe, IOb
. 13b...f liquid recovery pipe, 12...side beam, 1
3... Movable plate, 14... Eyelet fitting, 15... Filter body, 16.16°, 16°°, 16°"-r overpressure adjustment port, 17... Suspension string, 18...・This cloth, 19...Standard solution supply port.

Claims (1)

[Claims] (1) A filter plate (1) consisting of a frame (2) surrounding a filter section
) and a pair of filter cloths (4, 4) arranged before and after the filter plate (1) and sandwiching the filter section, and when a plurality of filter cloths are arranged adjacent to each other and then tightened, the adjacent filter cloths Board (1
, 1) A filter body of a filter press in which a filter chamber (8) for filtering the stock solution is formed between a pair of filter cloths (4, 4) sandwiched between each of the above-mentioned filter cloths (4, 4). ) is provided with a through hole (
A pair of filter cloths (4, 4) forming a filter plate (1) and facing each other with the filter plate (1) in between are fastened to each other at peripheral edges of both through holes (4a, 4a) to form a stock solution supply port (19). ), and the frame (2) of the filter plate (1) of each filter cloth (4).
The above stock solution supply port (4a
), and the peripheral edges of both the through holes (4b, 4b) of the pair of filter cloths (4, 4) facing each other with the plate (1) in between are formed. A filter body for a filter press, characterized in that the filter body is fastened to form a filtration pressure adjustment port (16).