JPH0642922B2 - Squeeze film in a squeeze filter press and squeeze filter plate provided with the squeeze film - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a squeeze filter press in which a protrusion is provided for maintaining a gap between adjacent filter plates at a predetermined interval and supporting the filtering surface of the squeeze filter plate. The present invention relates to a squeeze membrane including a child and a squeeze filter plate including the squeeze membrane.

2. Description of the Related Art Conventionally, when a squeezing filter press is used for filtration, a cake held between a pair of filter cloths between a normal filter plate and a squeeze filter plate is squeezed by expanding a squeeze film of the squeeze filter plate. There are various known types. When the pressing membrane is attached to the pressing filter plate, there is one in which a circular holding piece is arranged at the center of the pressing film and is fixed to the pressing filter plate body with a bolt (Act No. Sho 56-11928). Gazette).

Problems to be Solved by the Invention In the structure described above, since the compression membrane is fixed to the core plate with the circular clamping member, the load is concentrated on the compression membrane around the cylindrical clamping member when the compression film expands, As a result, the squeeze film around the metal object is likely to be damaged and cracks may occur.

Therefore, the present inventor originally arranged the holding metal object to form a gap between the press filter plates, and therefore, it is not necessary to fix this protrusion to the press filter plate, and the protrusion is attached to the press membrane. The present invention was devised on the assumption that the load on the squeezing membrane can be reduced by mounting and not fixing it to the squeezing filter plate.

Therefore, an object of the present invention is to solve the above problems, and to provide a squeeze membrane in a squeeze filter press capable of effectively preventing cracking of the squeeze membrane and a squeeze filter plate including the squeeze membrane. To do.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention is configured such that the protrusion is attached to the pressing membrane without being fixed to the pressing plate. That is, according to the first aspect of the invention, a protrusion that covers the surface of the squeezing filter plate main body, has a protrusion on the front surface, and is capable of contacting the main body at the position on the back surface and corresponding to the protrusion. A squeeze film in a squeeze filter press having a mounting plate, wherein the projection is attached to the projection mounting plate with a fitting, and the projection is fitted into a through hole of the squeeze film to form the projection. A pillar portion attached to the child mounting plate, a flange portion protruding from the pillar portion, a mounting hole penetrating the pillar portion, and a flange portion formed around the through hole of the compressed film. The protrusion mounting plate is configured to include an engaging portion that can be closely engaged with the engaging portion, and the protrusion mounting plate includes a mounting portion that mounts the mounting tool that is inserted into a mounting hole of a column of the protrusion.

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

Further, in the above configuration, a plurality of the protrusions may be provided, and the plurality of protrusions may be attached to one of the protrusion mounting plates.

Further, in the invention according to claim 4, a squeeze film is arranged on the surface of the squeezing filter plate main body so as to cover the surface, and a protrusion is arranged on the surface of the squeeze film, and corresponding to the protrusion. In a squeezing filter press, wherein a protrusion mounting plate capable of contacting the main body is arranged on the back surface of the squeeze film, and the protrusion is attached to the squeeze mounting plate with a fixture so as to sandwich the squeeze film. As a squeezing filter plate, the protrusion penetrates through the pillar portion, which is fitted into the through hole of the squeezing membrane and attached to the protrusion mounting plate, the flange portion protruding from the pillar portion, and the pillar portion. The protrusion mounting plate is provided with an attachment hole and an engagement portion formed in the collar portion and capable of closely engaging with an engagement portion formed around the through hole of the compressed film. Provide a mounting part for mounting the above-mentioned mounting tool that is inserted into the mounting hole of the column part of Configuration was.

Further, in the above structure, a stock solution supply port is provided at approximately the center of the filtering surface of the squeezing filter plate body and the squeezing membrane, and the projection and the projection mounting plate are provided around the stock solution supply port. It can also be configured to be arranged radially with respect to the stock solution supply port.

Further, in the above configuration, a plurality of the protrusions may be provided, and the plurality of protrusions may be attached to one of the protrusion attachment members.

Action and Effect of the Invention According to the above configuration, each of the protrusions is roughly configured to include the pillar portion, the mounting hole, the flange portion, and the engaging portion, and the protrusion is fixed to the squeezing plate body. Instead of being attached to the squeeze membrane with the protrusion mounting plate and the fixture, the squeeze can freely move with the squeeze mounting plate with respect to the squeeze plate body as the squeeze film expands. There is less control over the expansion of the. Therefore, when the compressed film expands, a rapid increase in load on the compressed film near the protrusions is suppressed, and cracking of the compressed film can be effectively prevented. Also, when a plurality of protrusions are provided in the squeezing membrane, the squeezing pieces are separated from each other and each of the slugs can move independently according to the expansion movement of the squeezing membrane, which is impossible for the squeezing membrane. Load does not act. Further, the space holding plate is not simply attached to the surface of the squeeze film, but the column portion is inserted into the through hole of the squeeze model, and the protrusion is attached to one or more of the protrusion attachment plates. Since the compressed film is held between the protrusion and the protrusion mounting plate by means of a tool, when the filter plate is tightened, even if pressure is applied from the adjacent filter plate, the protrusion is inserted via the column portion. Only the pressure acts on the child and the protrusion mounting plate, and the pressure hardly acts on the compressed film. Therefore, it is possible to effectively prevent damage to the squeeze membrane when the filter plate is tightened. Further, since it is not necessary to form a mounting hole for mounting the protrusion on the squeezing filter plate main body, the main body can be manufactured more easily.

Embodiment An embodiment according to the present invention will be described in detail below with reference to FIGS.

The filter press provided with the press filter plate 2 in the press type filter press according to the present embodiment, as shown in FIGS. 1 and 2, alternates the press filter plate 2 and the normal filter plate 4 between the front and rear stands 14 and 15. A pair of guide rails 18, 18 in the front-back direction
After slidably arranging the movable plate 17 to the front stand side by driving the drive device 16 of the rear stand 15, the stock solution is placed between the filter plates 2 and 4, and a pair of filter cloths 8 and
It is generally configured such that the compressed fluid is supplied to the compression filter plate 2 at the same time or after that to supply the compressed fluid to the filtration filter plate 2 to expand the compression membrane 1 and perform the compression filtration.

The squeezing filter plate 2 covers the front and rear surfaces of a square plate-shaped filter plate body 3 with a pair of squeezing membranes 1, 1 and squeezes three protrusions 6, 6, 6 on the surface of each squeezing membrane 1. The protrusion mounting plates 27, 27, which are arranged on the diagonal line of the membrane 1 and serve as a protrusion mounting member,
27 is arranged on the back surface of each squeeze film 1 so as to correspond to the protrusions 6, 6, 6, and each stub 6 is attached to each stub mounting plate 27 so as to hold each squeeze film 1 therebetween. .

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 outer surface 3a. .., 3d protruding in the lateral direction are integrally formed at respective corners of the main body 3, and holes 3e, 3e, 3h, 3h penetrating therethrough are formed in the respective ear portions 3d. In FIG. 2, the through holes 3h in the left upper and right lower ears 3d of the main body 3 communicate with the openings 3j of the inclined surface 3n of the main body 3 and the communication filter 3i.
To form a compressed fluid supply path communicating with a compressed fluid supply chamber 26 described later. The through holes 3e of the left and right upper ears 3d of the main body 3 are connected to the openings 3g of the outer frame 3a of the main body 3 by the connecting paths 3f to form a filtrate collecting path. Further, each side portion of the main body 3 is formed with a laterally protruding grip 3l, and the grips 3l are arranged in parallel in the front-rear direction of the filter press.
The pressing filter plate 2 is slidably mounted on the upper side and suspends and supports each pressing filter plate 2 on a pair of guide rails 18, 18. A stock solution supply port 3k is formed in the center of the filtration surface 3b of the main body 3, and the filtration surface 3b is separated from the filtration surface 3b around the stock solution supply port 3k by a predetermined distance.
A pair of protrusions 3c, 3c are formed on each diagonal of b. Each protrusion 3c has a substantially rectangular plate shape, and both ends thereof are curved. The protruding portion 3c is provided between the back surface of the squeezing membrane 1 and the surface of the filtering surface 3b on which the protruding portion 3c is not provided, and the compressed fluid supply chamber 2
6 (see FIG. 10) is formed to facilitate the supply of the compressed fluid between the squeeze membrane 1 and the squeeze filter plate body 3, and at the time of tightening the filter plate, three protrusions are provided. 6, 6, 6
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 filter surfaces 3b, 4b and prevent the filter surfaces 3b, 4b from being damaged.

On the other hand, the pair of squeezing membranes 1, 1 are each formed of an elastic material such as rubber having unevenness on the surface, and cover the filtration surfaces 3b, 3b and the inclined surfaces 3n, 3n on the front and rear sides of the main body 3. , And are connected to each other by bolts 22, ..., 22 at their upper and lower ends. At the center of each squeeze membrane 1 is a ring 2
By fitting 1 into the peripheral edge portion of the stock solution supply port 3k of the main body 3, a stock solution supply hole 1k communicating with the stock solution supply port 3k of the main body 3 is formed. The three protrusions 6, 6, 6 and the three protrusion mounting plates 27, 27, at a predetermined distance around the undiluted solution supply hole 1k and at positions corresponding to the protrusions 3c of the main body 3. Place 27. At the corners on the lower left side and the upper right side of the squeeze film 1, a filtrate collection port 1g communicating with each opening 3g of the outer frame 3a of the main body 3 is formed.

Next, in explaining the relationship between each of the protrusions 6, each of the protrusion attachment plates 27, and the compressed film, the above description will be given with reference to another embodiment shown in FIGS. In this other embodiment, the protrusion 6, the protrusion mounting plate 27, and the bolt 7 are the same as those in the embodiment shown in FIG. 2, but only the arrangement and the number of compressed membranes are different.
In the other embodiment described above, four protrusions 6, ..., 6 and four protrusion mounting plates 27 ,.

In FIGS. 3 to 10, an annular convex portion 61e is formed in a portion of the compressed film 61 where each protrusion 6 is arranged, and a circular protrusion fitting concave portion 61d is formed in the annular convex portion 61e. The protrusion fitting recess 61d has a planar shape that is substantially the same as the protrusion 6, and has a small through hole 61a formed in the bottom surface thereof.

Each of the protrusions 6 is preferably made of hard material such as stainless steel or nylon plywood, and is formed in a circular plate shape as shown in FIGS. The thickness of the compressed film 6 is
It is preferable that the surface of the protrusion 6 is substantially the same as the surface of the outer frame 3a of the squeezing filter plate body 3 in a state of being fitted in the protrusion fitting recess 61d formed in 1. Each protrusion 6 has a circular column 6a.
A collar portion 6d protruding from the pillar portion 6a, and the pillar portion 6a.
And a fitting recess 6c formed on the back surface of the collar 6d around each pillar 6a. The pillar portion 6a is formed with the collar portion 6d at one end thereof, and is fitted into the circular through hole 61a of the squeeze film 61 so that the other end surface thereof contacts the surface of the protrusion mounting plate 27. . The engagement recess 6c is an annular projection 6 as an engagement portion formed around the through hole 61a of the compressed film 61.
1c is closely fitted to bring the compressed film 61 and the protrusion 6 into close contact with each other, compressed air leaks from the inside of the compressed film 61 to the outside when the compressed film expands, and the filtrate flows from the outside of the compressed film 61 to the inside. Effectively prevent leakage.

On the other hand, as shown in FIGS. 4 to 7 and 9, the protrusion mounting plate 27 is formed in a circular plate shape having substantially the same plane shape as that of the protrusion 6. The protrusion mounting plate 27 has a mounting hole 27 that can communicate with the mounting hole 6b of the pillar 6a of the protrusion 6.
Form through a.

Therefore, the four protrusions 6, ..., 6 are formed on the surface of each squeeze film 61 and corresponding to the protrusions 3c of the main body 3 with four protrusion fitting recesses 61d ,. 61d are respectively fitted and arranged, while the four above-mentioned protrusion mounting plates 27, ..., 2 are arranged.
7 is the back surface of each squeeze film 61 and is the protruding portion 3c of the main body 3
Respectively, and insert bolts 7 as attachments into the attachment holes 6b of the pillar portions 6a of the protrusions 6 to attach the bolts 7 to the attachment holes 27a of the protrusion attachment plates 27. By screwing in, the protrusions 6 and the protrusion mounting plates 27 are attached to the compression film 61 so as to hold the compression film 61. At this time, the squeeze film 61 is sandwiched between each of the protrusions 6 and each of the protrusion mounting plates 27, but a portion that is directly fastened to the protrusion mounting plate 27 by each bolt 7, that is, each column portion 6a. Since the compressed film 61 does not exist between each protrusion attachment plate 27, the compressed film 61 is not damaged by tightening the bolt 7. Four of the above-mentioned protrusion mounting plates 27, ..., 27
Is capable of abutting against the projecting portion 3c of the above-mentioned main body 3,
At the time of tightening the filter plate, each of the protrusion mounting plates 27 comes into contact with the protruding portion 3c. The protrusion 3c is attached to the four protrusion mounting plates 27, ..., 2
If you make it a little larger than the shape of 7 in parallel, it will be stable 4
27 can be brought into contact with the protrusion 3c. The stem 6 and the stem mounting plate 27 are the main body 3
It is preferable to arrange the filter surface 3b around the stock solution supply port 3k in good balance.

On the other hand, the normal filtering plate 4 has an inclined surface formed inside the square plate-shaped outer frame 4a, and a filtering surface b which is recessed in a square shape inside thereof. Similar to the squeezing filter plate main body 3, laterally protruding ears (not shown) are integrally formed at the respective corners of the normal filtering plate 4, and the piercing holes are formed in the respective ears. Form. Further, the through holes of the left lower part and the right upper part of the normal filter plate 4 are connected to the opening of the filter surface 4b near the outer frame 4a of the normal filter plate 4 by a connecting path to form the normal filter plate 4 A filtrate recovery path communicating with the through hole of the ear portion of the. Further, a handle 4l protruding laterally is formed on each side of the normal filter plate 4, and the handle 4l is slidable on each guide rail 18 arranged side by side in the front-rear direction of the filter press. When mounted, each normal filter plate 4 is attached to a pair of guide rails 18,18.
Suspend and support. A stock solution supply port 4k is formed at the center of the filtration surface 4b of the normal filter plate 4, and a pair of protrusions 4c, 4c are provided on the respective facing lines of the filtration surface 4b at a predetermined distance around the stock solution supply port 4k. Form. Each protrusion 4c has a substantially rectangular plate shape so that it can face the four protrusions 6, ..., 6 and both ends thereof are curved, and when the filter plates 2 and 4 are tightened, The four protrusions 6, ..., 6 attached to the four protrusion mounting plates 27 ,.
Comes into contact with the protruding portion 4c of the normal filter plate 4 through the filter cloths 8 and 8 to maintain a predetermined gap between the filter surfaces 2b and 4b of the adjacent filter plates 2 and 4, and The filtration surfaces 2b and 4b are supported so as not to be damaged during tightening or supply of compressed fluid.

According to the above configuration, the squeezing filter plate 2 and the normal filtering plate 4 are driven by the driving device 16 to move the movable plate 17 to the front stand side for tightening. In this tightened state, each of the four protrusion mounting plates 27, ..., 27 is attached to the protruding portion 3c of the squeezing filter plate body 3.
, And each of the four protrusions 6, ..., 6 attached to the squeeze film 61 so as to face the protrusion mounting plates 27 ,.
Comes into contact with the protruding portion 4c of the adjacent ordinary filter plate 4 through the pair of filter cloths 8 and 8 and comes into contact therewith. In the tightened state, between the pair of filter cloths 8 and 8 sandwiched between the filter plates 2 and 4, from the stock solution supply pipe 77 of the front stand 14 to the filter plates 2 and 4, respectively.
The undiluted solution is supplied through the undiluted solution supply ports 3k, 4k, etc. to perform filtration. After the stock solution is supplied for a predetermined time, or when a predetermined amount of stock solution is supplied, a compressed fluid such as compressed air is supplied from the supply pipe 29 to the squeeze filter plate 2 through the supply path of the compressed fluid. The squeeze film 61 is expanded. That is, as shown in FIG. 10, each squeezing membrane 61 and squeezing filter plate body 3
The compressed fluid is supplied to the compressed fluid supply chamber 26 between and, and the compressed film 61 expands. At this time, the protrusions 6, ..., 6 attached to the squeeze film 61 and the thrust attachment plates 27, ..., 27 can also move with respect to the squeeze filter plate body 3 as the squeeze film 61 expands. The cake 25 held between the two filter cloths 8 and 8 is squeezed and filtered by the expansion of the squeeze film 61. The filtrate discharged in the filtration and the squeeze filtration is collected in the filtrate collecting passage and discharged from the filtrate collecting pipe 28. When the predetermined filtering work is completed, the movable plate 17 is moved to the rear stand side by the drive of the drive device 16, and
The filter plates 2 and 4 are individually opened, and the cake 25 held between the filter cloths 8 and 8 is dropped downward to be collected. As shown in FIG. 2, each filter cloth 8 has a lower end with each handle 3l, 4l of each filter plate 2,4.
It is supported by a filter cloth suspension rod 23 suspended and supported by a spring 11 from a pin 10 connecting the upper end of an arm 9 pivotally attached to the. Therefore, the filter cloths 8 and 8 vibrate due to the vibration of the filter plates 2 and 4 when the frame is opened, the driving of a vibration applying device (not shown), and the cake 25 peels off from the filter cloths 8 and 8 and falls. After the cake is collected, the cleaning pipe 13 of the cleaning device 12 that moves back and forth along the rail 30 is rotated to the position shown by the alternate long and short dash line in FIG. Wash. When the cleaning work is completed, the filter plates 2 and 4 are tightened again for the next filtration work.

According to the above-described embodiment, each of the protrusions 6 is roughly configured to include the pillar portion 6a, the collar portion 6d protruding by the pillar portion 6a, the mounting hole 6b, and the engaging recessed portion 6c. 6 was attached to the squeeze film 61 with the respective protrusion attachment plates 27 and the respective bolts 7 so as to sandwich the squeeze film 61, and the protrusions 6 were not fixed to the squeeze plate body 3. As a result, as the squeeze film 61 expands, the protrusions 6 cause the squeeze plate body 3 to move.
It is possible to move freely with respect to, and it is less likely that the expansion of the squeeze film 61 is restricted. Therefore, when the squeeze film 61 expands, a rapid increase in the load on the squeeze film 61 near the protrusions is suppressed, and cracking of the squeeze film 61 can be effectively prevented. In addition, the squeeze film 61 is not simply attached with a gap holding plate on the surface thereof, but the column portion 6a is not
1 is inserted into the through hole 61a, the protrusion 6 is attached to the protrusion attachment plate 27 with the bolt 7, and the compressed film 61 is held between the protrusion 6 and the protrusion attachment plate 27. Therefore, even when pressure is applied from the adjacent filter plate 4 when tightening the filter plate, the protrusion 6 and the protrusion mounting plate 27 are inserted through the column portion 6a.
Only the pressure acts on the squeeze membrane 61, and the above pressure hardly acts on the squeeze membrane 61. Therefore, it is possible to effectively prevent damage to the compressed film 61 when the filter plate is tightened. In addition, each protrusion 3c, 4c and the four juxtaposed 6,
..., 6 are the stock solution supply ports 3k, 4k as in the embodiment of FIG.
With respect to the filtering surfaces 3b, 4b, since they are radially arranged in a well-balanced manner, the undiluted solution smoothly flows into the filtering surfaces 3b, 4b.
It is possible to supply up to the corners of 4b, and by arranging the above-mentioned protrusion 6 and the protrusion mounting plate 27 in a well-balanced manner and by arranging them at the same position on the front and rear sides of the main body 3, the adjacent filter plates can be provided. When 2 and 4 are tightened, a substantially uniform tightening force acts on the filtering surfaces 3a and 4a. Further, since it is not necessary to form a mounting hole for mounting the protrusion 6 in the squeezing filter plate body 3, the squeezing filter plate body 3 can be manufactured more easily. Also, in the embodiment shown in FIG. 2, the same effect as that of the embodiment shown in FIGS. 3 to 10 can be obtained.

The present invention is not limited to the above embodiment,
It can be implemented in various other modes. For example, each squeeze membrane 1,
The number of the protrusions 6 and the protrusion attachment plates 27 arranged in 61 is arbitrary. Further, the number of bolts 7 for attaching each of the protrusions 6 to the protrusion mounting plate 27 is arbitrary. Further, the shape of the pillar portion 6a is not limited to a circular shape, and may be a polygonal shape such as a quadrangle, a hexagon, or an octagon. Further, by increasing the thickness of each of the protrusions 6 or each of the protrusion attachment plates 27 or both of them, the protrusion 3c of the squeezing filter plate body 3 or the protrusion 4c of the normal filter plate 4 or both of the protrusions are protruded. The parts 3c and 4c can be omitted. Further, the undiluted solution supply ports of the filter plates 2 and 4 are not limited to those formed at the substantially central portion of the filtration surface, but may be formed at any portion of the filtration surface or an outer frame so as to communicate with the filtration surface. It may be formed. Further, the present invention is not limited to one in which the squeezing filter plates 2 and the normal filter plates 4 are alternately arranged, but can be applied to one in which only the squeezing filter plates 2 are arranged.

Further, the shape of each protrusion is not limited to the circular shape, and may be any shape. For example, as shown by the two-dot chain line in FIG.
As shown in FIG. 14, the upper half may be a circle and the lower half may be a square. In this case, it is preferable that the protrusion mounting plate 37 also has the same shape. In the projection 36, the engagement recess 36c is formed such that the upper half has a circular frame shape and the lower half has a quadrangular frame shape, and the engagement projection 61c of the squeeze membrane 61 is also formed in a similar shape. In close contact,
It is possible to effectively prevent the dew liquid from leaking from the front surface side to the back surface side of the compressed film 61 and the compressed fluid from leaking from the back surface side to the front surface side. In this protrusion 36, the pillar portion 36
The a, the mounting hole 36b, the collar portion 36d, and the engaging recess portion 36c correspond to the column portion 6a of the protrusion 6, the mounting hole 6b, the collar portion 6d, and the engaging recess portion 6c, respectively. The attachment plate 37a of the protrusion attachment plate 37 also corresponds to the attachment hole 27a of the protrusion attachment plate 27.

In addition, the engaging recesses 6c and 36c of the protrusions 6 and 36 and the compressed film 6
The concave-convex relationship may be reversed from that of the first engaging protrusion 61c. That is, the engaging recesses 6c and 36c may be formed as engaging protrusions, while the engaging protrusion 61 of the compressed film 61 may be formed as engaging recesses.

Further, the positions of the protrusions 6 and 36 and the protrusion mounting plates 27 and 37 on the filtration surface are arbitrary. For example, as shown in FIGS. 15 to 17, six circular protrusions 53c, ..., 53c are formed on the upper side and the lower side of the stock solution supply port 51k, and the circular protrusions 53c, ... You may make it attach the protrusion 6 and each protrusion attachment plate 27 to the squeeze film 31. Here, the through hole 31a of the compressed film 31, the engagement protrusion 31c, and the fitting recess 31d
The annular convex portion 31e and the annular convex portion 31e are the through hole 61a, the engaging protrusion 61c, the fitting concave portion 61d, and the annular convex portion 61e, respectively.
Equivalent to. Further, as shown in FIG. 18, the protruding portion 43c of the squeezing filter plate body 43 may be formed integrally with the outer frame 3a. That is, elongated protrusions 43c are respectively formed so as to extend radially with respect to the undiluted solution supply port 41k, that is, from the outer frame 3a to the upper, lower, left, and right sides, and the respective protrusions 4 are formed.
It is also possible to attach three protrusions 6 and three protrusion attachment plates 27 to the squeeze membrane 41 in correspondence with 3c. The eighteenth
In the figure, 41 g corresponds to the opening 1 g of the compressed film 1. Further, as shown in FIG. 19, three long projecting portions 53c are formed on the upper side and the lower side of the stock solution supply port 51k, and the projecting member 6 and the projecting portion 53c are projected corresponding to each projecting portion 53c. The child attachment plates 27 and the child attachment plates 27 may be attached to the squeeze film 51 in groups of three.

In addition, the surface of each of the protrusions 6 and 36 is a squeezed film 1, 31, 41 and
The protrusions 6,36 are protruded from the surfaces of the protrusions 1,61, and the protrusion fitting recesses 61d, 31d of the compression membranes 1,31,41,51,61.
May be fitted.

Further, instead of forming the mounting holes 27a and 37a in the protrusion mounting plates 27 and 37 and screwing the bolts 7, the bolts are fixed to the mounting plates 27 and 37, and the protrusions 6 and 36 are passed through the bolts. You may make it tighten with a nut after making it. Also, one protrusion mounting plate 27,
Not limited to the one to which 37 is attached, a plurality of protrusions 6, ...,
, 36 may be attached to one substantially rectangular plate whose both ends are curved. In this case, the elongated protrusion mounting plate is not limited to a rigid one, but is made of an elastic material that can be bent between the adjacent protrusions 6, 6; ,
The squeezing membranes 1, 31, 41, 51, 61 are made to bend freely between the respective protrusions in response to the expansion movement of the pressure squeezing membranes 41, 51, 61.
It may be possible to further reduce the load on the.

[Brief description of drawings]

1 and 2 are a side view of a filter press having a pressing filter plate in a pressing filter press according to an embodiment of the present invention and a sectional view taken along the line II-II of FIG. 1, and FIGS. Front view of essential parts in a state where a protrusion and a protrusion mounting plate are attached to a compression film according to another embodiment, respectively, and a compression filter plate in which the protrusion and the protrusion mounting plate are attached to the compression film. And a normal filter plate are fastened together, a cross-sectional side view of a main part and a cross-sectional plan view of the main part. FIG. 6 is a front view in a state where a protrusion and a protrusion mounting plate are attached by bolts, and FIG. VII in Figure 6
-VII sectional view, FIGS. 8 and 9 are respectively a rear view of the protrusion seen from the line VIII-VIII of FIG. 7 and a rear view of the protrusion mounting plate seen from the line IX-IX, and FIG. FIG. 11 is a cross-sectional side view of a main part of the filter press in a plate tightened state, and FIG. 11 is a front view in a state in which a protrusion and a protrusion mounting plate according to another embodiment are attached by bolts, and FIGS. Is a bottom view of the protrusion and the protrusion mounting plate of FIG. 11, and a sectional view taken along the line XII-XII of FIG. 11, respectively.
FIG. 14 is a rear view of the projection seen from the line XIV-XIV in FIG. 13, and FIGS. 15, 16 and 17 are the compression membrane according to another embodiment in which the projection and the projection attachment plate are attached. Front view in a closed state, an enlarged front view of a main part thereof, and a cross section of a main part in a state in which the squeeze filter plate in which the protrusion and the protrusion mounting plate are attached to the squeeze membrane and the normal filter plate are tightened FIG. 18 is a side view, FIG. 18 is a front view of a squeezing filter plate according to still another embodiment, and FIG. 19 is a squeezing membrane according to another embodiment different from the above, showing the relationship with the squeezing filter plate by a dotted line. It is a front view of a squeeze film. 1,31,41,51,61 ... Squeezing membrane, 61a, 31a ...
Through holes, 61c, 31c ... Engaging projections, 61d, 31d ... Projector fitting recesses, 61e, 31e ... Annular projections, 2 ... Pressing filter plate, 3 ... Pressing filter plate body, 4 ... … Ordinary filter plates, 6,36…
… Stems, 6a, 36a …… Posts, 6b, 36b …… Mounting holes, 6
c, 36c ... engaging recess, 6d, 36d ... collar, 7 ... bolt, 8 ... filter cloth, 9 ... arm, 10 ... pin, 11 ...
… Spring, 12… Cleaning device, 13… Cleaning tube, 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 suspension rod, 25 ... Cake, 26 ... Compressed fluid Supply chamber, 27, 37 ... stud mounting plate, 27a, 37a ...
…mounting hole.

Claims (6)

[Claims] 1. A squeezing plate main body (3) is covered with a protrusion (6, 36) on the surface while covering the surface of the squeezing plate main body (3), and on the back side thereof.
(6) is provided with a protrusion mounting plate (27, 37) capable of contacting the main body (3), and the protrusion (6, 36) is attached to the protrusion mounting plate (2).
7,37) as a squeeze film in a squeeze filter press that is attached by a fitting (7), and the protrusions (6,36) of the squeeze film (1,31,41,51,61) A pillar portion (6a, 36a) fitted in the through hole (31a, 61a) and attached to the protrusion mounting plate (27, 37), and a collar portion (6d) protruding from the pillar portion (6a, 36a). , 36d), the mounting hole (6b, 36b) penetrating the pillar portion (6a, 36a), and the through hole (31, 61) formed in the collar portion (6d, 36d) and the through hole (31, 61) 31a, 61a) is provided with an engaging portion (6c, 36c) capable of closely engaging with an engaging portion (31c, 61c) formed around the protrusion mounting plate (27, 37). Child (6,36) Pillar (6a, 36
A squeezing membrane in a squeezing filter press, characterized in that it is provided with a mounting portion (27a, 37a) for mounting the above-mentioned mounting tool (7) inserted into the mounting hole (6b, 36b) of a). 2. A stock solution supply port (1k, 31k, 41k, 51k, 61k) is provided at approximately the center of the filtration surface of the squeezing membrane (1, 31, 41, 51, 61), and the protrusion (6) is provided. , 36) and the protrusion mounting plate (27, 37) around the stock solution supply port (1k, 51k, 61k), the stock solution supply port (1k,
31k, 41k, 51k, 61k) radially arranged with respect to
A squeeze film in the squeeze filter press described. 3. A plurality of the projections (6, 36) are provided, and the plurality of projections (6, 36) are attached to one of the projection mounting plates (27, 37). Or a squeeze film in the squeeze filter press according to 2 above. 4. A squeeze film (1, 31, 41, 51, 61) is arranged on the surface of the squeeze filter plate body (3) so as to cover the surface, and the squeeze film (1, 31, 4)
1,51,61) with the protrusions (6,36) arranged on the surface, and corresponding to the protrusions (6,36), on the back surface of the compressed membrane (1,31,41,51,61). Arrange the protrusion mounting plate (27, 37) that can contact the main body (3), and sandwich the compression membrane (1, 31, 41, 51, 61) with the protrusion (6, 36). In the squeeze filter plate in the squeeze filter press that is attached to the protrusion mounting plate (27,37) with the fixture (7), the protrusions (6,36) are the squeezing membranes (1,31, 41, 51, 61) a pillar portion (6a, 36a) fitted in the through hole (31a, 61a) and attached to the protrusion mounting plate (27, 37), and the pillar portion (6a, 36a) More protruding flange portion (6d, 36d), a mounting hole (6b, 36b) penetrating the upper pillar portion (6a, 36a), and the flange portion (6d, 36d) and the compressed film (31, 61) with the through hole (31a, 61a) and the engaging portion (6c, 36c) that can be tightly engaged with the engaging portion (31c, 61c) formed around the protrusion mounting plate ( 27,37) is the pillar (6a, 36) of the above-mentioned stem (6,36).
A squeezing filter plate in a squeezing filter press, characterized in that it is provided with a mounting portion (27a, 37a) for mounting the above-mentioned mounting tool (7) inserted into the mounting hole (6b, 36b) of a). 5. The squeezing filter plate body (3) and the squeezing membrane (1, 3)
At the center of the filtration surface of 1,41,51,61)
k, 41k, 51k, 61k), and the protrusion (6, 36) and the protrusion mounting plate (27, 37) is the stock solution supply port (1k, 31k, 41k, 5
The squeeze filter plate in the squeeze filter press according to claim 4, wherein the squeeze filter plate is radially arranged around the 1k, 61k) with respect to the stock solution supply ports (1k, 31k, 41k, 51k, 61k). 6. A plurality of said projections (6, 36) are provided, and said plurality of projections (6, 36) are attached to one said projection mounting plate (27, 37). Or a squeezing filter plate in the squeezing filter press according to 5 above.