JPH03258314A - Compression membrane and compression filter frame provided with compression membrane in compressive filter press - Google Patents

Abstract

PURPOSE:To prevent the compression membrane from cracking by providing pillar parts, flange parts, fixing holes, and engaging parts on a projecting piece, and furnishing fixing parts fixing gadgets to a projecting piece fixing members. CONSTITUTION:Compression filter plates 2, ordinary filter plates 4, and a movable plate 17 are moved to the side of front stand to be cramped. Each four projecting piece fixing plates 27... are brought into contact with the projecting parts 3c of compression filter plate main bodies 3, and each four projecting pieces 6... provided on the compression membrane 61 to be confronted with the projecting piece fixing plates 27... are confronted and brought into contact with the projecting parts 4c of ordinary filter plates 4 with a pair of filter cloths 8, 8 between. Raw liquid is supplied through raw liquid supply openings 3K, 4K, etc., of each filter plates 2, 4 into the space enclosed with a pair of filter cloths 8, 8 inserted into each filter plates 2, 4 to be filtered. When compression liquid is supplied and the compression membranes 61 are expanded, both the projecting pieces 6... and the projecting piece fixing plates 27 are allowed to move against the compression filter plate main body 3, so that the compression membrane is prevented from breaking.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a compression type filter press in which a predetermined gap is maintained between adjacent filter plates, and the filtration surface of the upper i self-squeezing filter plate is The present invention relates to a compressed membrane equipped with protrusions for supporting the compressed membrane and a compressed filter plate equipped with the compressed membrane.

BACKGROUND ART Conventionally, during filtration with a squeeze filter press, the cake held between a pair of filter cloths between a filter plate and a squeeze filter plate is compressed and filtered by expanding the squeeze membrane of the squeeze filter plate. Various methods are known. When attaching the above-mentioned compressed membrane to the compressed filter plate, there is a method in which a circular clamping metal fitting is placed in the center of the compressed membrane, and this is fixed to the compressed filter plate main body with bolts (Utility Model Publication No. 56-11928) ).

Problems to be Solved by the Invention In the structure described above, the compressed membrane is fixed to the core plate by the circular clamping hardware, so when the compressed membrane expands, the load concentrates on the compressed membrane around the cylindrical clamping hardware, causing As a result, the compressed film around the metal fittings became easily damaged, and cracks sometimes occurred.

Therefore, the inventor of the present invention proposed that since the above-mentioned clamping hardware was originally arranged to form a gap between the pressing filter plates, there was no need to fix the protrusions to the pressing filter plates, and the protrusions were attached to the pressing membrane. The present invention was created based on the belief that by configuring the membrane so that it is not fixed to the press filter plate, the load on the press membrane can be reduced.

Therefore, an object of the present invention is to solve the above problems, and to provide a compressed membrane in a compressed filter press that can effectively prevent cracking of the compressed membrane, and a compressed filter plate equipped with the compressed membrane. It's about doing.

Means for Solving the Problems In order to achieve the above object, the present invention is configured such that the protrusions are attached to the squeeze membrane without being fixed to the squeeze filter plate. That is, according to the invention according to claim 1, while covering the surface of the compressed filter plate main body, the surface is provided with protrusions.
A compressed membrane in a compression type filter press is provided with a protrusion attachment member that can come into contact with the main body at a position corresponding to the protrusion on the back surface, and the protrusion is attached to the protrusion attachment member with a fitting. The protrusion includes a column that fits into a through hole of the compressed membrane and is attached to the protrusion attachment member, a flange projecting from the column, and a mounting hole that passes through the column. an engaging portion formed on the flange portion and capable of tightly engaging with an engaging portion formed around the through hole of the compressed membrane; The device is configured to include a mounting portion to which the above-mentioned mounting tool is inserted into the mounting hole of the section.

In the above configuration, a stock solution supply port is provided approximately at the center of the filtration surface of the compressed membrane, and the protrusions and the protrusion mounting plate are arranged around the stock solution supply port and relative to the stock solution supply port. They can also be configured to be arranged radially.

Moreover, in the said structure, it can also be comprised so that a plurality of said protrusions may be provided and these several protrusions may be attached to one said protrusion attachment member.

In addition, in the invention according to claim 4, a compressed membrane is arranged on the surface of the compressed filter plate main body so as to cover the surface, and protrusions are disposed on the surface of the compressed membrane. A compression type filter press, wherein a protrusion attachment member that can come into contact with the main body is arranged on the back side of the compression membrane, and the protrusion is attached to the protrusion attachment member with a fitting so as to sandwich the compression membrane. In the compressed filter plate, the protrusions include a column that fits into a through hole of the compressed membrane and is attached to the protrusion attachment member, a flange projecting from the column, and a flange that extends through the column. and an engaging portion formed in the flange portion and capable of tightly engaging with an engaging portion formed around the through hole of the compressed membrane, and the protrusion attaching member It is configured to include a mounting portion for mounting the mounting tool inserted into the mounting hole of the column portion of the protrusion.

In addition, in the above configuration, a stock solution supply port is provided approximately at the center of the filtration surface of the press filter plate main body and the press membrane, and the protrusions and the protrusion mounting plate are arranged around the stock solution supply port. It can also be configured to be arranged radially with respect to the stock solution supply port.

Moreover, in the said structure, it can also be comprised so that a plurality of said protrusions may be provided and these several protrusions may be attached to one said protrusion attachment member.

Effects and Effects of the Invention According to the above configuration, each of the protrusions is roughly configured to include the pillar portion, the mounting hole, the collar portion, and the engaging portion, and the protrusion is fixed to the press filter plate main body. Since the protrusions are attached to the compressed membrane using the protrusion attachment members and attachments instead of the protrusions, the protrusions can move freely with respect to the compressed filter plate body together with the protrusion attachment members as the compressed membrane expands, and the compressed membrane It becomes less difficult to control the expansion of Therefore, when the compressed membrane is expanded, a sudden increase in load on the compressed membrane near the protrusions is suppressed, and cracking of the compressed membrane can be effectively prevented. Also,
When a squeeze membrane is equipped with multiple protrusions, the protrusions are separated and each protrusion can move independently according to the expansion movement of the squeeze membrane, so there is no need to place an unreasonable load on the squeeze membrane. does not work. In addition, instead of simply attaching a gap retaining plate to the surface of the compressed membrane, the pillars are inserted into the through holes of the compressed membrane, and the protrusions are attached to one or more of the protrusion attachment members. Since the compressed membrane is held between the protrusions and the protrusion mounting member, even if pressure is applied from an adjacent filter plate when tightening the filter plate, the protrusion will not pass through the pillars. The pressure only acts on the child and the protrusion attachment member, and hardly acts on the pressing membrane.

Therefore, damage to the compressed membrane can be effectively prevented when the filter plate is tightened. Further, since there is no need to form mounting holes for attaching the protrusions in the compressed filter plate main body, the main body can be manufactured more easily.

Embodiments of the present invention will be described in detail below with reference to FIGS. 1-19.

As shown in FIG. ．． A pair of guide rails 18.1 alternately move the compressed filter plate 2 and the normal filter plate 4 in the front and rear direction between 15 and 15.
After the movable plate 17 is tightened toward the front stand side by driving the drive device 16 of the rear stand 15, a pair of filter cloths are arranged so as to be slidable relative to each other. 8. At the same time or thereafter, the compressed fluid is supplied to the compressed filter plate 2 and the compressed membrane l
It is generally configured to expand and perform compression filtration.

The compressed filter plate 2 covers the front and rear surfaces of a square plate-shaped filter plate main body 3 with a pair of compressed membranes 1.1, and compresses three protrusions 6, 6.6 on the surface of each compressed membrane l. Protrusion mounting plates 27, 2 are arranged diagonally on the membrane l and serve as protrusion mounting members.
7.27 are arranged on the back surface of each compressed membrane 1 in correspondence with the protrusions 6, 6.6, and each protrusion 6 is attached to each protrusion mounting plate 27 so as to sandwich each compressed membrane 1. be done.

The main body 3 has an inclined surface 3n formed inside a square outer frame 3a, and a filtering surface 3b recessed in a square shape inside the inclined surface 3n.
form. Ear portions 3d, . . . , 3d projecting laterally are integrally formed at each corner of the main body 3.
There are through holes 3e, 3e 3h.

Form 3h. In FIG. 2, each through hole 3h of each lug 3d at the upper left side and lower right side of the main body 3 is connected to each opening 3j of the inclined surface 3n of the main body 3 through a communication path 31, and is connected to the compressed fluid supply described later. A compressed fluid supply path communicating with the chamber 26 is configured. Further, each through hole 3e of each ear portion 3d at the lower left side and upper right side of the main body 3 is formed in the outer frame 3 of the main body 3.
A filtrate recovery path is configured by connecting each opening 3g of a with a connecting path 3f.

Further, each side of the main body 3 has a handle 3 that protrudes laterally.
12, and each handle 3a is slidably mounted on each guide rail 18 arranged in parallel in the front-rear direction of the filter press, and each squeeze filter plate 2 is connected to a pair of guide rails 18.1.
Suspended and supported at 8. A stock solution supply port 3k is formed in the center of the filter surface 3b of the main body 3, and a pair of protrusions are formed on each diagonal of the filter surface 3b by a predetermined distance from the filter surface 3b around the stock solution supply port 3. Form 3c, 3c. Each protrusion 3c
is roughly rectangular plate-shaped with curved ends.

This protrusion 3c is located between the back surface of the compressed membrane I and the surface of the filtration surface 3b without the protrusion 3c, and the compressed fluid supply chamber 26 (first
A gap 19 is formed that communicates with the compressed membrane 1 and the compressed filter plate main body 3 by forming a gap 19 that communicates with the compressed membrane l and the compressed filter plate main body 3, and when the filter plate is tightened, the three projections 6, 6.6 and the three protrusion mounting plates 27° 27.27 cooperate with the protrusion 4c of the normal filter plate 4, which will be described later, to support both the filter surfaces 3b, 4b and support the filter surfaces 3b, 4. Prevent damage to b.

On the other hand, the pair of compressed membranes 1.1 each have an uneven surface and are formed of an elastic material such as rubber, and have filtering surfaces 3b, 3b and inclined surfaces 3n, 3 on both front and rear sides of the main body 3.
It is arranged to cover the port 22.n at its upper and lower ends.
. . , are connected to each other by 22.

A ring 21 is fitted in the center of each compressed membrane l to the peripheral edge of the stock solution supply port 3 of the main body 3, so that the main body 3
A stock solution supply hole 1k is formed which communicates with the stock solution supply port 3k. The three protrusions 〇, 6.6 and the three protrusion mounting plates 27 are placed at a predetermined distance around the stock solution supply hole 1 and at positions corresponding to the respective protrusions 3c of the main body 3. 27.
Place 27. A filtrate recovery port 1g communicating with each opening 3g of the outer frame 3a of the main body 3 is formed at the lower left corner and upper right corner of the compressed membrane 1.

Next, in explaining the relationship between each protrusion 6, each protrusion mounting plate 27, and the compressed membrane, the above explanation will be made using other embodiments shown in FIGS. 3 to 10. In this other embodiment, the protrusions 6, protrusion mounting plates 27, and bolts 7 are the same as those in the embodiment shown in FIG.
In the above other embodiment, four protrusions 6.・, 6 and four protrusion mounting plates 27, . . . , 27 are arranged.

In FIGS. 3 to 10, an annular projection 61e is formed in the compressed membrane 61 at a portion where each protrusion 6 is arranged, and a circular protrusion fitting recess 61d is formed within the annular projection 61e. The protrusion fitting recess 61d has approximately the same planar shape as the protrusion 6, and has a small through hole 61a formed in its bottom surface.

Each protrusion 6 is preferably made of hard material such as stainless steel or nylon plywood, and is formed into a circular plate shape as shown in FIGS. 3 to 8. Its thickness is the above-mentioned compressed membrane 6
It is preferable that the surface of the protrusion 6 is substantially the same as the surface of the outer frame 3a of the pressing filter plate main body 3 when it is fitted into the protrusion fitting recess 61d formed in the filter plate body 3. Each protrusion 6 has a circular column portion 6
a, a flange 6d projecting from the column 6a, a mounting hole 6b penetrating through the center of the column 6a, and an engaging recess 6c formed on the back surface of the flange 6d around each column 6a. Equipped with The columnar portion 6a has the flange portion 6d formed at one end thereof, and is fitted into the circular through hole 61a of the compressed membrane 61, so that the other end surface contacts the surface of the protrusion mounting plate 27. . Further, the engagement recess 6c tightly fits an annular protrusion 61c as an engagement portion formed around the through hole 61a of the compression membrane 6I, thereby bringing the compression membrane 61 and the protrusion 6 into close contact. This effectively prevents compressed air from leaking from the inside of the pressing membrane 6I to the outside and leaking filtrate from the outside to the inside of the pressing membrane 61 when the pressing membrane is expanded.

On the other hand, the protrusion mounting plate 27 is formed into a circular plate shape having approximately the same planar shape as the protrusion 6, as shown in FIGS. 4-7 and 9. This protrusion mounting plate 27 has mounting holes 2 that can communicate with the mounting holes 6b of the column portions 6a of the protrusions 6.
7a.

Therefore, the four protrusions 6. ...16 to each compressed membrane 6I
The four protrusions are fitted into the four protrusion fitting recesses 61d...61d formed on the surface of the main body 3 in a portion corresponding to the protrusion 3c, while the four protrusions Mounting plate 27. . . , 27 are respectively arranged on the back surface of each compressed membrane 6I at a portion corresponding to the protruding portion 3c of the main body 3, and a mounting member as a mounting member is placed in the mounting hole 6b of the column portion 6a of each protrusion 6. Insert the bolts 7 and attach each bolt 7 to each protrusion mounting plate 2.
By screwing into the mounting hole 27a of 7, the compressed membrane 6
Each protrusion 6 and each protrusion mounting plate 27 are attached to the compressed membrane 61 so as to sandwich the protrusion 1 . At this time, each protrusion 6
A compressed membrane 6I is sandwiched between the and each protrusion mounting plate 27, but the parts that are directly fastened to the protrusion mounting plate 27 with each bolt 7, that is, each column part 6a and each protrusion mounting plate 27, Since there is no compressed membrane 61 between them, the compressed membrane 6I will not be damaged by tightening the bolts 7. The four protrusion mounting plates 27. . . , 27 can come into contact with the protrusion 3c of the main body 3 facing each other, and each of the protrusion mounting plates 27 comes into contact with the protrusion 3c when the filter plate is tightened. This protrusion 3c
4 protrusion mounting plates 27. ..., if the shape is slightly larger than the shape in which 27 are arranged in parallel, the four protrusion mounting plates 2 can be stably mounted.
7. . . , 27 can be brought into contact with the protrusion 3c. The protrusion 6 and the protrusion mounting plate 27 are the filter surface 3 of the main body 3.
It is preferable that they are arranged in a well-balanced manner around the stock solution supply port 3 in b.

On the other hand, the normal filter plate 4 has an inclined surface formed inside a square plate-shaped outer frame 4a, and further has a square-shaped recessed filter surface 4b formed inside the inclined surface. Similar to the compressed filter plate main body 3, a laterally protruding ear (not shown) is integrally formed at each corner of the normal filter plate 4, and each ear has a through hole. Form. In addition, the through holes of the ears on the lower left side and the upper right side of the ordinary filter plate 4 are connected to the openings of the filtering surface 4b near the outer frame 4a of the ordinary filter plate 4 through connecting passages.
A filtrate recovery path is configured to communicate with the hole through which the ear portion of the filtrate is penetrated.

In addition, handles 4g are formed on each side of the normal filter plate 4, and each handle 4g is slidable on each guide rail 18 arranged in parallel in the front-rear direction of the filter press. Each conventional filter plate 4 is mounted on a pair of guide rails 18.
It is suspended and supported by 18. A stock solution supply port 4k is formed in the center of the filtering surface 4b of the normal filter plate 4, and this stock solution supply port 4
A pair of protrusions 4c, 4c are formed on each diagonal of the filtering surface 4b at a predetermined distance apart around the filtration surface 4b. Each protrusion 4c
is the above four protrusions 6. . . , 6, which has a roughly rectangular plate shape and whose both ends are curved, so that when the filter plates 2 and 4 are tightened, the four protrusion mounting plates 2
7. . . , four protrusions 6. attached to 27 and attached to each squeeze membrane 6I. ..., 6 is the above filter cloth 8.8
When the filter plate 4 is in contact with the protrusion 4c of the normal filter plate 4 to maintain a predetermined gap between the filter surfaces 2b and 4b of the adjacent filter plates 2 and 4, when the filter plate is tightened or the compressed fluid The filter surfaces 2 b and 4 b are supported so as not to be damaged during supply.

According to the above configuration, the compression filter plate 2 and the normal filter plate 4 are tightened by moving the movable plate 17 toward the front stand side by driving the drive device 16. In this tightened state, each of the four protrusion mounting plates 27. ...
, 2°7 are brought into contact with each other, and the protrusion mounting plate 27.・・・
- 4 protrusions 6. and 27 each attached to the squeeze membrane 61 opposite to the protrusions 6. ..., 6 abut against and contact the protrusion 4c of the adjacent normal filter plate 4 via a pair of filter cloths 8.8.

In the above-mentioned tightened state, the pair of filter cloths 8.8 k sandwiched between each of the filter plates 2 and 4, and the stock solution supply pipe 7 of the front stand 14
7 through the stock solution supply ports 3k, 4k of each filter plate 2, 4, etc., to perform filtration. After the stock solution supply operation has been carried out for a predetermined period of time, or when a predetermined amount of stock solution has been supplied, compressed fluid, for example, compressed air, is supplied from the supply pipe 29 to the compressed filter plate 2 through the compressed fluid supply path. The squeeze membrane 61 is expanded. That is, as shown in FIG.
A compressed fluid is supplied to expand the compressed membrane 61. At this time, the projections 6 attached to the compressed membrane 61. ..., 6
The protrusion mounting plates 27, . . . , 27 can also move relative to the compressed filter plate main body 3 as the compressed membrane 6I expands. Due to the expansion of the squeeze membrane 61, the cake 25 held between the filter cloths 8.8 is compressed and filtered. The filtrate discharged in the filtration and press filtration is collected in the filtrate recovery path and discharged from the filtrate recovery pipe 28.

When the predetermined filtration work is completed, the movable plate 17 is moved to the rear stand side by the drive of the drive device 16, and then the filter plates 2.4 are individually opened, and the movable plate 17 is held between the filter cloths 8.8. The cake 25 is dropped downward and collected. As shown in FIG.
pin 1 connecting the upper end of arm 9 pivotally connected to g and 4g
It is supported by a filter cloth hanging rod 23 suspended from a spring 11. Therefore, the filter cloth 88 is vibrated due to the vibration when the filter plate 2.4 is opened, the driving of a vibration imparting device (not shown), etc., and the cake 25 is peeled off from the filter cloths 8 and falls. After collecting the cake, the cleaning tube 13 of the cleaning device 12, which moves back and forth along the rail 20, is rotated using its lower end as a fulcrum to the position shown by the dashed line in FIG. Clean the area. The cleaning work is completed.
Then, the filter plate 2.4 is tightened again for the next filtration operation.

According to the embodiment described above, each of the protrusions 6 is approximately configured to include the column portion 6a, the flange portion 6d protruding from the column portion 6a, the mounting hole 6b, and the engagement recess 6C, and the protrusion 6 is attached to the compressed membrane 61 with each protrusion mounting plate 27 and each bolt 7 so as to sandwich the compressed membrane 61, and the protrusions 6 are not fixed to the compressed filter plate main body 3. As a result, as the compressed membrane 61 expands, the protrusions 6 move onto the compressed filter plate main body 3.
The expansion of the compression membrane 61 is less restricted (therefore, when the compression membrane 61 expands, a sudden increase in load on the compression membrane 61 near the protrusion is suppressed, It is possible to effectively prevent cracks in the compressed membrane 61.Furthermore, instead of simply attaching a gap retaining plate to the surface of the compressed membrane 61, the pillar portions 6a are attached to the compressed membrane 6.
1 into the through hole 61a, and attach the protrusion 6 to the protrusion mounting plate 27 with the bolt 7, so that the compressed membrane 61 is sandwiched between the protrusion 6 and the protrusion mounting plate 27. Therefore, when the filter plate is tightened, even if pressure is applied from the adjacent filter plate 4, the protrusions 6 and the protrusion mounting plate 27 are removed via the pillar portions 6a.
The pressure only acts on the compressed membrane 61, and the pressure hardly acts on the compressed membrane 61. Therefore, damage to the compressed membrane 61 can be effectively prevented when the filter plate is tightened. In addition, each protrusion 3c, 4c and four protrusions 6. . . . , 6 is the same as in the embodiment shown in FIG.
Since they are arranged radially in a well-balanced manner toward the corners of the protrusions 6 and 4b, the stock solution can be smoothly supplied to the corners of the filtration surfaces 3b and 4b. By arranging the mounting plates 27 and locating them at the same position on both the front and rear sides of the main body 3, when the adjacent filter plates 2.4 are tightened, a substantially uniform tightening force is applied to the filter surfaces 3a, 4a. It becomes effective. Further, since it is not necessary to form mounting holes for attaching the protrusions 6 in the compressed filter plate main body 3, the manufacturing of the compressed filter plate main body 3 becomes easier. Further, the embodiment shown in FIG. 2 can also produce the same effects as the embodiment shown in FIGS. 3 to IO.

Note that the present invention is not limited to the above embodiments,
It can be implemented in various other ways. For example, each compressed membrane 1,
The number of protrusions 6 and protrusion mounting plates 27 disposed on 61 is arbitrary. Further, the number of bolts 7 for attaching each protrusion 6 to the protrusion mounting plate 27 is also arbitrary. Further, the shape of the pillar portion 6a is not limited to a circle, but may be any polygon such as a quadrangle, a hexagon, or a hexagon. Moreover, by increasing the thickness of each protrusion 6 or each protrusion mounting plate 27, or both, the protrusion IJ3c of the compressed filter plate main body 3, the protrusion part 4c of the normal filter plate 4, or both protruding portion 3 c,
4 c can be made unnecessary. In addition, each filter plate 2,
The stock solution supply port 4 is not limited to being formed approximately in the center of the filtration surface, but may be formed in any part of the filtration surface, or
! It may also be formed on the outer frame so as to communicate with the upper surface. Furthermore, the present invention is not limited to the arrangement in which the compressed filter plates 2 and the normal filter plates 4 are arranged alternately, but can also be applied to a configuration in which only the compressed filter plates 2 are arranged.

Furthermore, the shape of each protrusion is not limited to a circular shape, but may be any shape. For example, as indicated by the two-dot chain line in FIG.
As shown in FIG. 14, the protrusion 36 may have a circular upper half and a square lower half. In this case, it is preferable that the protrusion attachment plate 37 also have a similar shape. In the protrusion 36, the engagement recess 36c has an upper half shaped like a circular frame and a lower half shaped like a square frame, and the engagement protrusion 61c of the compressed membrane 61 is also formed in the same shape, so that both can be connected. In close engagement,
It is possible to effectively prevent the filtrate from leaking from the front side of the compressed membrane 61 to the back side, or the compressed fluid from leaking from the back side to the front side. In this protrusion 36, the pillar portion 36
a, the mounting hole 361), the flange 36d, and the engagement recess 36c correspond to the column 6a, the mounting hole 6b, the 8 part 6d, and the engagement recess 6c of the protrusion 6, respectively. Mounting hole 37 of protrusion mounting plate 37
a also corresponds to the mounting hole 27a of the protrusion mounting plate 27.

Further, the engagement recesses 6c, 36c of the protrusion 6.36 and the engagement protrusion 61c of the pressing membrane 61 may have an opposite uneven relationship. That is, while the engagement recess 6c36c is formed as an engagement protrusion, the engagement protrusion 61 of the pressing membrane 61 may be formed as an engagement recess.

In addition, the illumination between the protrusion 6.36 and the protrusion mounting plate 27.37
The position on the surface is arbitrary. For example, 15th to 17th
As shown in the figure, six circular protrusions 53C2..., 53c are formed on the upper and lower sides of the stock solution supply port 51k, and each protrusion 6 and each The protrusion attachment plate 27 may also be attached to the compressed membrane 31. Here, the through hole 31a of the compressed membrane 3I and the engagement protrusion 31c
The fitting recess 31d and the annular protrusion 31e correspond to the through hole 61a, the engagement protrusion 61c, and the fitting recess 6 of the pressing membrane 61, respectively.
1d and the annular convex portion 61e. In addition, as shown in FIG.
may be formed integrally with the outer frame 3a. That is, elongated protrusions 43c are formed radially with respect to the stock solution supply port 41k, that is, extending vertically and horizontally from the outer frame 3a. The mounting plates 27 may be attached to the press 41 three at a time.

In addition, in FIG. 18, 41g corresponds to the opening 1g of the compressed membrane 1. Further, as shown in FIG. 19, elongated protrusions 53c are formed on the upper and lower sides of the stock solution supply port 51k, and a protrusion 6 and a protrusion are formed corresponding to each protrusion 53c. Three attachment plates 27 may be attached to the compressed membrane 51 at a time.

Also, the surface of each protrusion 6.36 is at the angle of 1.31°41.
Each protrusion 6.36 is pressed into the protrusion fitting recess 61 of the membrane 1, 31, 41, 51.61 so as to protrude from the surface of the protrusion 51.61.
d, 31d.

Also, mounting holes 27a are provided in the protrusion mounting plates 27.37.

37a and screwing the bolt 7 into it, the bolt is fixed to the mounting plate 27.37 and the protrusion 6.37 is attached to the bolt.
After passing through the hole 36, it may be tightened with a nand. Furthermore, the invention is not limited to the one in which one protrusion mounting plate 27.37 is attached to each of the protrusions 6.36, but a plurality of protrusions 6.36. ..., 6.36. ... 36 may be attached to one approximately rectangular plate having curved ends.

In this case, the elongated protrusion mounting plate is not limited to a rigid one, but can be made of an elastic material that can be bent freely between the adjacent protrusions 6, 6, 36, 36. ，
The compressed membranes 1, 31, 41, 51 are bent freely between the protrusions in response to the expansion movement of the membranes 1, 31, 41, 51.
, 61 may be further reduced.

[Brief explanation of drawings]

Figure 1.2 is a side view of a filter press having a squeeze filter plate in a squeeze type filter press according to an embodiment of the present invention, and a sectional view taken along the line ■-■ in Figure 1, and Figures 3.4.5 are A front view of main parts in a state where the protrusions and the protrusion mounting plate are attached to the compressed membrane according to other embodiments, and a compressed filter plate in which the protrusions and the protrusion attachment plate are attached to the compressed membrane. Fig. 6 is a front view of the protrusion and protrusion mounting plate attached with bolts, and Fig. 7 is a cross-sectional side view and plan view of the main part when the filter plate and the normal filter plate are tightened. ■ in Figure 6
-■ line sectional view, Figure 8.9 is a rear view of the protrusion as seen from the ■-■ line in Figure 7, and a rear view of the protrusion mounting plate as seen from the IX-IX line, respectively, and Figure 10 is the filter FIG. 11 is a cross-sectional side view of the main part of the filter press in a plate-tightened state, and FIG. 11 is a front view of a state in which a protrusion and a protrusion mounting plate are attached with bolts according to another embodiment, and FIGS. 12 and 13. 11 is a bottom view of the protrusion and the protrusion mounting plate, and a sectional view taken along the line ■-■ in FIG. 11, and FIG. 14 is a rear view of the protrusion seen from the line Figures 15, 16, and 17 are a front view showing the protrusions and the protrusion mounting plate attached to the compressed membrane according to the embodiment on each side, an enlarged front view of the main parts thereof, and the protrusions and the protrusion attachment. 18. Main part cross-sectional side view in a state where the pressing filter plate and the normal filter plate are tightened, with the plates attached to the pressing membrane, No. 18
The figure is a front view of a compressed filter plate according to yet another embodiment, the first
FIG. 9 is a front view of a pressing membrane according to another embodiment from the above, and the relationship with the pressing filter plate is shown by dotted lines. 1.31.41 51 61--Pressed membrane, 61 a,
31a... Through hole, 61c 31cm engagement protrusion, 61
d, 31d... protrusion fitting recess, 61e, 31e...
Annular convex portion, 2... compressed filter plate, 3... compressed filter plate main body,
4... Normal filter plate, 6゜36-... projection, 6 a, 3
6 a-pillar part, 6 b, 36 b... mounting hole, 6
c, 36 c-engaging recess, 6 d, 36 d-...
Flange, 7... Bolt, 8... Filter cloth, 9... Arm, lO... bottle, 11... Spring, 12... Cleaning device, 13... Washing pipe, 14...・Front stand, 15...
- Rear stand, 16... Drive device, 17... Movable plate, 18... Guide rail, 19 - Gap, 20...
Rail, 21...Ring, 22...Bolt, 23.
...Filter cloth hanging rod, 25...Cake, 26...Compressed fluid supply chamber, 27.37...Protrusion mounting plate, 27a, 37a
·Mounting holes. 4121 Figure 3

Claims (6)

[Claims] (1) While covering the surface of the pressing filter plate main body (3), the front surface is provided with protrusions (6, 36), and the back surface is provided with the protrusions (6, 36).
Protrusion mounting members (27, 37) that can come into contact with the main body (3) are provided at positions corresponding to the protrusions (6, 36).
36) to the protrusion mounting members (27, 37).
) in the compressed filter press, the protrusions (6, 36) are attached to the compressed membranes (1, 31, 41).
, 51, 61) and a column (6a, 36a) that is fitted into the through hole (31a, 61a) and attached to the protrusion attachment member (27, 37); The protruding flange portions (6d, 36d) and the pillar portions (6a,
mounting holes (6b, 36b) penetrating through the flange (6d, 36d) and the pressing membrane (31,
and an engaging portion (6c, 36c) that can be tightly engaged with the engaging portion (31c, 61c) formed around the through hole (31a, 61a) of the projection mounting member (61); 27, 37) are the above projections (6, 36
) to attach the above-mentioned fixture (7) inserted into the mounting hole (6b, 36b) of the pillar part (6a, 36a) (2).
7a, 37a) A compressed membrane in a compressed filter press characterized by comprising: (2) The stock solution supply port (1k, 31k, 41k
, 51k, 61k), and the protrusion (6,
36) and the protrusion mounting plates (27, 37) are arranged around the stock solution supply ports (1k, 51k, 61k).
1k, 31k, 41k, 51k, 61k) in a compressed filter press according to claim 1, wherein the compressed membrane is arranged radially with respect to the filter press. (3) A plurality of the protrusions (6, 36) are provided, and these plurality of protrusions (6, 36) are attached to one protrusion mounting member (27).
, 37). The compressed membrane in the compressed filter press according to claim 1 or 2, wherein the compressed membrane is attached to a compressed filter press. (4) A compressed membrane (1, 31, 41, 51, 61) is arranged on the surface of the compressed filter plate main body (3) so as to cover the surface, and the compressed membrane (1, 31, 41, 51, 61) protrusions (6
, 36), and a protrusion that can come into contact with the main body (3) is attached to the back surface of the compressed membrane (1, 31, 41, 51, 61) corresponding to the protrusion (6, 36). Parts (27,
37), and place the protrusions (6, 36) on the compressed membrane (
1, 31, 41, 51, 61) in a compressed filter press, which is attached to the protrusion attachment member (27, 37) with a fitting (7) so as to sandwich the protrusion ( 6, 36) is the above compressed membrane (1, 31, 41
, 51, 61) and a column (6a, 36a) that is fitted into the through hole (31a, 61a) and attached to the protrusion attachment member (27, 37); The protruding flange portions (6d, 36d) and the pillar portions (6a,
mounting holes (6b, 36b) penetrating through the flange (6d, 36d) and the pressing membrane (31,
and an engaging portion (6c, 36c) that can be tightly engaged with the engaging portion (31c, 61c) formed around the through hole (31a, 61a) of the projection mounting member (61); 27, 37) are the above projections (6, 36
) to attach the above-mentioned fixture (7) inserted into the mounting hole (6b, 36b) of the pillar part (6a, 36a) (2).
7a, 37a) A pressing filter plate in a pressing filter press, characterized in that it is equipped with the following. (5) The compressed filter plate main body (3) and the compressed membrane (1, 3)
1, 41, 51, 61) are provided with stock solution supply ports (1k, 31k, 41k, 51k, 61k) approximately in the center of the filtration surfaces of the protrusions (6, 36) and the protrusion mounting plate (
27, 37) means the above stock solution supply port (1k, 31k, 41
k, 51k, 61k) around the stock solution supply port (1k, 3k).
1k, 41k, 51k, 61k) in a pressing type filter press according to claim 4, wherein the pressing filter plate is arranged radially with respect to the filters (1k, 41k, 51k, 61k). (6) A plurality of the protrusions (6, 36) are provided, and the plurality of protrusions (6, 36) are attached to one protrusion mounting member (27).
, 37) in a compressed filter press according to claim 4 or 5.