JPH0659367B2 - 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. In the case of attaching the above-mentioned squeezing membrane to a squeezing filter plate, there is one in which a circular holding piece is arranged in the center of the squeezing film and is fixed to the squeezing filter plate body with a bolt (Japanese Utility Model Publication No. 56-11928). ).

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 of the compression film around the cylindrical clamping member is concentrated 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 invention of claim 1, while movably covering the surface of the squeeze filter plate body during expansion of the squeeze film, the surface of the squeeze filter plate body is provided with a protrusion,
A squeeze film in a squeezing filter press, comprising a protrusion mounting member capable of abutting on the main body at a position corresponding to the protrusion on the back surface, and the protrusion is attached to the protrusion mounting member by a fixture. And disposing a protrusion on the surface of the compression membrane covering the surface of the compression plate body, and disposing a protrusion attachment member capable of contacting the main body on the back surface of the compression membrane corresponding to the protrusion, The protrusion is a compressed film in a compression type filter press which is attached to the protrusion attachment member with a fixture so as to sandwich the compressed film, and the protrusion is fitted in the through hole of the compressed film. A plurality of pillars mounted on the protrusion mounting member, a mounting hole penetrating each of the pillars, and a length that connects the pillars to each other and restricts expansion of the squeeze film fitted around the pillars. With a scale connecting plate, Child attachment member configured to include a mounting portion for mounting the fixture to be inserted into the mounting hole of each pillar portion of the stems. In the above configuration, one or a plurality of the protrusion mounting members can be arranged for each of the protrusions.

Further, 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 are arranged around the stock solution supply port and radially with respect to the stock solution supply port. It can also be configured.

Further, in the above structure, the squeeze film includes an engaging portion formed so as to surround the through hole, and the protrusion and the protrusion mounting plate are engaged with each other so as to be capable of closely engaging with the engaging portion. It can also be configured to include a joint.

According to the invention of claim 4, the squeeze film is arranged so as to be movable with respect to the squeeze film plate body at the time of squeeze film expansion and to cover the surface of the squeeze filter plate body. A protrusion is arranged on the front surface, and a protrusion attachment member capable of abutting on the main body is arranged on the back face of the compressed film corresponding to the protrusion, and the protrusion is sandwiched between the compressed film. A plurality of pillars which are squeezed filter plates in a squeeze filter press attached to the stud attachment member with a fitting, wherein the lugs are fitted into the through holes of the squeeze membrane and attached to the stud attachment member. And a mounting hole that penetrates each of the pillar portions, and a long connecting plate portion that connects the pillar portions to each other and restricts the expansion of the compressed film that is fitted around the pillar portion, and the protrusion. The mounting member is inserted into the mounting hole of each pillar of the above-mentioned protrusion. It was configured with a mounting portion for mounting the fixture. In the above configuration, one or a plurality of the protrusion mounting members can be arranged for each of the lattices.

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-mentioned configuration, the squeeze film includes an engaging portion formed so as to surround the through hole, and the protrusion includes an engaging portion capable of closely engaging with the engaging portion. You can also do it.

Effects and Effects of the Invention According to the above configuration, the protrusion is roughly configured by connecting the plurality of column portions with the long connecting plate portion, and the protrusion is compressed without being fixed to the compression plate body. Since it is attached to the membrane, the protrusion can freely move with respect to the squeeze filter plate body with the expansion of the squeeze membrane, and the expansion of the squeeze membrane is less restricted. 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. 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 film to attach the protrusion to one or a plurality of the protrusion attachment members. Since the squeeze film is held between the protrusion and the protrusion mounting member by 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 member, 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 in the squeezing plate body, the main body can be manufactured more easily.

Example An example according to the present invention will be described below in detail 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
The movable plate 17 is fastened to the front stand side by driving the driving device 16 of the rear stand 15, and then the stock solution is arranged between the filter plates 2 and 4 in a pair. It is generally configured such that the compressed fluid is supplied to the squeeze filter plate 2 to expand the squeeze membrane 1 to perform the squeeze filtration while simultaneously supplying or supplying the compressed fluid to the squeeze filter plate 2.

The front and rear surfaces of the square plate-shaped filter plate body 3 of the squeezing filter plate 2 are covered with a pair of squeezing membranes 1 and 1, and the protrusions 6, ..., 6 are arranged on the surface of each squeezing membrane 1 and projected. 27 are arranged on the back surface of each squeeze film 1 as child attachment members, and each stub 6 is attached to each stake attachment plate 27 so as to hold each squeeze film 1 above. To 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 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 body 3 are connected to the openings 3j of the inclined surface 3n of the body 3 and the communication passages 3h.
By connecting with i, a compressed fluid supply path communicating with a compressed fluid supply chamber 26 described later is formed. In addition, the through holes 3e of the left and right upper ears 3d of the main body 3 are connected to the respective openings 3g of the outer frame 3a of the main body 3 by connecting paths 3f,
Configure a filtrate recovery path. Further, each side portion of the main body 3 is formed with a laterally projecting grip 3l, and the respective grips 3l are arranged side by side in the front-rear direction of the filter press.
8 is slidably mounted on the base plate 8 to suspend and support the press filter plates 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 a pair of protrusions 3c are provided on each diagonal of the filtration surface 3b at a predetermined distance from the filtration surface 3b around the stock solution supply port 3k. Form 3c. Each of the protrusions 3c has a substantially rectangular plate shape and both ends thereof are curved. The protruding portion 3c forms a gap 19 communicating with the compressed fluid supply chamber 26 (see FIG. 11) between the back surface of the squeeze membrane 1 and the surface of the filtration surface 3b where the protruding portion 3c does not exist, and the compressed fluid is compressed. Is easily supplied between the squeeze membrane 1 and the squeeze filter plate body 3, and at the time of tightening the squeeze plate, it cooperates with the protrusions 6 and the protrusion mounting plate 27 and the protrusions 4c of the ordinary filter plate 4 described later. And supports both filtering surfaces 3b, 4b to prevent the filtering surfaces 3b, 4b from being damaged.

On the other hand, each of the pair of squeezing membranes 1, 1 has an uneven surface and is made of an elastic material such as rubber so as to cover the filtering 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 joining 1 to the peripheral edge of the stock solution supply port 3k of the main body 3, a stock solution supply hole 1k communicating with the original picture supply port 3k of the main body 3 is formed. The protrusors 6, ..., 6 and the protrusor mounting plates 27, ..., 27 are located at a predetermined distance around the undiluted solution supply hole 1k and at positions corresponding to the respective projecting portions 3c of the main body 3.
To place. As shown in FIGS. 3 to 5, a protrusion fitting recess 1d is formed in a portion where each protrusion 6 is arranged. The protrusion fitting concave surface 1d has a planar shape substantially similar to that of the protrusion 6, and has a total of four small through holes 1a, ..., 1a formed on the bottom surface thereof. At the corners on the lower left side and the upper right side of the squeeze membrane 1, a filtrate recovery port 1g communicating with each opening 3g of the outer frame 3a of the main body 3
To form.

Each of the protrusions 6 is preferably made of a hard material such as stainless steel or nylon plywood. As shown in FIGS. 3 to 9, both ends of a generally rectangular plate are curved. The thickness of the protrusion 6 is substantially the same as the surface of the outer frame 3a of the squeezing filter plate body 3 when fitted in the protrusion fitting recess 1d formed in the squeeze film 1. Is preferred. Each stem 6
, 6a, four mounting holes 6b penetrating the center of each pillar 6a, and a long connecting plate 6d connecting the pillars 6a, ..., 6a. The pillar portions 6a are fitted in the circular through holes 1a of the squeeze film 1 and come into contact with the surface of the protrusion mounting plate 27. Since each of the pillar portions 6a is fitted in the through hole 1a of the squeeze membrane 1, when the filter plate is tightened,
The squeeze filter plate 2 is pressed by the adjoining ordinary filter plate 4 so that the portion around the respective pillar portions 6a of the connecting plate portion 6d has the squeeze film 1
It is preferable to allow close contact with the surface side portion around each through hole 1a.

On the other hand, as shown in FIGS. 4 to 8 and 10, the projecting member mounting plate 27 has substantially the same plane shape as that of the projecting member 6, and both ends of a roughly rectangular plate are curved. . The protrusion mounting plate 27 is formed by penetrating a mounting hole 27a that can communicate with the mounting holes 6b of the pillars 6a of the protrusion 6.

Therefore, the protrusion 6 is fitted and arranged in the protrusion fitting recess 1d formed on the surface of each compressed film 1 corresponding to the protrusion 3c of the main body 3, while the protrusion is Attach the mounting plate 27 to the back surface of each squeeze film 1 and to the protruding portion 3 of the main body 3.
It is arranged at a portion corresponding to c, and a bolt 7 as a mounting tool is inserted into each of the mounting holes 6b of each of the pillar portions 6a of the protrusion 6 so that the bolt 7 is inserted into the mounting hole 27a of the protrusion mounting plate 27. By screwing, the compressed film 1 is attached to the compressed film 1 so as to hold it. At this time, the protrusion 6 and the protrusion mounting plate 2
7, the squeeze film 1 is sandwiched between the squeeze film 1 and the squeeze attachment plate 27. Therefore, the squeeze film 1 is not damaged by tightening the bolt 7. The protrusion mounting plate 27 is capable of abutting against the projecting portion 3c of the main body 3 which faces the protrusion mounting plate 27, and when the filter plate is tightened, the protrusion mounting plate 27 contacts the projecting portion 3c. This protrusion 3c
By slightly increasing the shape of the protrusion attachment plate 27, the protrusion attachment plate 27 can be stably brought into contact with the protrusion 3c. In the present embodiment, the protrusion 6 and the protrusion mounting plate 27 are attached to the squeeze membrane 1 with the four bolts 7, ..., 7; however, the present invention is not limited to this, and only the upper and lower two bolts 7, 7 are attached. You may do it. It is preferable that the protrusion 6 and the protrusion mounting plate 27 are arranged in good balance around the stock solution supply port 3k on the filtration surface 3b of the main body 3.

On the other hand, the normal filter plate 4 has an inclined surface formed inside a square plate-shaped outer frame 4a, and a filter surface 4b 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. Also. The through holes of the left lower portion and the right upper portion 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 placed, each normal filter plate 4 is attached to a pair of guide rails 18, 1.
Suspended and supported on 8. A stock solution supply port 4k is formed in the center of the filtration surface 4b of the normal filter plate 4, and a pair of protrusions 4c, 4c are formed on each diagonal of the filtration surface 4b at a predetermined distance around the stock solution supply port 4k. Form. Each protruding portion 4c has a substantially rectangular plate shape facing each of the above-mentioned protrusions 6 and both ends thereof are curved, and is attached to each of the protrusion attachment plates 27 when the filter plates 2 and 4 are tightened. The protrusions 6 attached to the squeezing membranes 1 are brought into contact with the protruding portions 4c of the ordinary filter plates 4 through the filter cloths 8 and 8 and the filter faces 2 of the adjacent filter plates 2 and 4 are contacted with each other.
A predetermined gap is maintained between b and 4b, and the filter surfaces 2b and 4b are supported so as not to be damaged when the filter plate is tightened or when compressed fluid is supplied.

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, the protrusion mounting plate 27 is in contact with the projecting portion 3c of the squeezing filter plate body 3, and a pair of the protrusions 6 facing the protrusion mounting plate 27 and attached to the squeeze membrane 1 are provided. The protrusions 4c of the adjacent ordinary filter plates 4 are abutted through the filter cloths 8 and 8 and come into contact therewith. In FIG. 2 above, the protrusion 6 and the protrusion mounting plate 27 are arranged in a well-balanced manner on the diagonal line of each filtering surface 3b, and by disposing them at the same position on the front and rear sides of the main body 3, the adjacent filter plate 2 When tightening 4 and 4, substantially uniform tightening force acts on the filtering surfaces 3a and 4a. In the tightened state, a pair of coatings 8 and 8 sandwiched between the filter plates 2 and 4
In the meantime, from the stock solution supply pipe 27 of the front stand 14 to the filter plates 2,
The undiluted solution is supplied through the undiluted solution supply ports 3k and 4k of 4 to perform filtration. After the undiluted solution supply work is performed for a predetermined time,
Alternatively, when a predetermined amount of the undiluted solution is supplied, a compressed fluid, for example, compressed air is supplied from the supply pipe 29 to the squeeze filter plate 2 via the compressed fluid supply passage, and each squeeze membrane 1 is expanded. That is, each squeeze membrane 1 and squeeze filter plate body 3 as shown in FIG.
The compressed fluid is supplied to the compressed fluid supply chamber 26 between and, and the squeeze membrane 1 expands. At this time, the protrusions 6, ..., 6 and the protrusion mounting plates 27 ,.
Can be moved with respect to the squeezing filter plate body 3 with the expansion. By the expansion of the squeeze film 1, the cake held between the two coatings 8 and 8 is squeezed and filtered. The filtrate discharged in the filtration and compression filtration is recovered in the filtrate recovery passage and discharged from the filtrate recovery pipe 28. When the predetermined filtering work is completed, the movable plate 1 is driven by the drive device 16 described above.
After moving 7 to the rear stand side, filter plates 2, 4
The spaces are individually opened, and the cake held between the filter cloths 8 and 8 is dropped downward to be collected. As shown in FIG. 1, each filter cloth 8 is suspended and supported by a spring 11 from a pin 10 connecting the upper ends of arms 9 pivotally attached to the handles 3l and 4l of the filter plates 2 and 4, respectively, as shown in FIG. It is supported by a filter cloth suspension rod 23. 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 is separated from the filter cloths 8 and drops. After the cake is collected, the cleaning pipe 13 of the cleaning device 12 that moves back and forth along the rail 20 is rotated about the lower end thereof as a fulcrum 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, the protrusion 6 includes the plurality of pillar portions 6
, 6a are connected to each other by the long connecting plate portion 6d to be roughly configured, and the protrusion mounting plate 27 and the bolts 7, ..., so as to sandwich the compression film 1 in the compression film 1. 7 was attached so that the protrusion 6 was not fixed to the squeezing filter plate body 3. As a result, the protrusion 6 is expanded together with the expansion of the compressed film 1.
Can move freely with respect to the squeeze filter plate body 3 and restrict expansion of the squeeze membrane 1 less. Therefore, when the compressed film 1 is expanded, a rapid increase in the load on the compressed film 1 in the vicinity of the protrusion is suppressed, and cracking of the compressed film 1 can be effectively prevented. Further, the above-mentioned pillar portions 6 are not provided by simply attaching the gap holding plate to the surface of the compressed film 1.
a is inserted into each through hole 1a of the squeeze film 1 and the projection 6 is attached to the projection mounting plate 27 with the bolts 7, ..., 7 to form the projection 6 and the projection mounting plate 27. Since the squeeze membrane 1 is sandwiched between and, even when pressure is applied from the adjacent filter plate 4 when tightening the filter plate, the protrusions 6 are mediated by the pillar portions 6a, ..., 6a.
And the pressure acts on the above-mentioned protrusion mounting plate 27,
The above-mentioned pressure hardly acts on the compressed film 1.
Therefore, it is possible to effectively prevent damage to the compressed film 1 when the filter plate is tightened. Further, since the protrusions 3c, 4c and the protrusions 6 are radially arranged toward the corners of the filtering surfaces 3b, 4b with respect to the undiluted solution supply ports 3k, 4k, the undiluted solution smoothly flows into the filtering surface 3b. , 4b corners can be supplied. 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.

The present invention is not limited to the above embodiment,
It can be implemented in various other modes. For example, the shape of each of the protrusions 6 is not limited to the above-mentioned embodiment, but may be various other shapes as long as it is long. Moreover, the number of the protrusions 6 is arbitrary. In addition, each of the protrusions 6 has a protrusion mounting plate 27.
The number of bolts 7 for attaching to is also arbitrary. Further, the number of the pillar portions 6a is arbitrary, and the shape thereof is not limited to the circular shape, and may be an arbitrary polygon such as a quadrangle or a hexagon. 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 main body 3 or the protrusion 4c of the normal filter plate 4 or both of them are formed. The protrusions 3c and 4c can be eliminated. 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 the above-mentioned squeezing membrane plate 2 and the normal filter plate 4 which are arranged alternately, but can also be applied to one in which only the squeezing filter plate 2 is arranged.

In addition, as shown in FIGS. 12 to 18, in order to improve the adhesiveness with the squeeze film 1 in each of the protrusions 36, an arbitrary number of
For example, four pillars may be integrated and the engaging recess 36c may be formed around the pillar. In the protrusion 36, the pillar portion 36a, the mounting hole 36b, and the connecting plate portion 36d correspond to the pillar portion 6a, the mounting hole 6b, and the connecting plate portion 6d of the protrusion 6, respectively. In the compressed film 31, the through hole 31a and the protrusion fitting recess 31d correspond to the through hole 1a and the protrusion fitting recess 1d of the compressed film 1, respectively. The engagement recess 36c is formed by the protrusion 3
The outer peripheral portion of the back surface 6 is formed as a concave portion having a substantially rectangular frame shape with its upper and lower end portions curved in FIG. 12 and is positioned so as to surround the four pillar portions 36a, ..., 36a of the protrusion 36. On the other hand, an engaging protrusion having a generally rectangular frame shape and curved upper and lower end portions in FIG. 12 so as to surround the four through holes 31a, ... The part 31c is formed. Therefore, the squeeze film 3 is inserted into the engaging recess 36c of the protrusion 36.
It is effective that the engaging protrusions 31c formed in 1 are in close contact with each other and that the filtrate leaks from the front surface side to the back surface side of the compressed film 1 and the compressed fluid leaks from the back surface side to the front surface side. Can be prevented. The protrusion 36 is attached to the compressed film 1 by the protrusion attachment plate 27 and the bolts 7, ..., 7 similarly to the protrusion 6, and the same effect as that of the protrusion 6 can be obtained.

Further, as shown in FIGS. 19 to 25, in order to improve the adhesiveness with the squeeze film 1 in each of the protrusions 46, each pillar portion 46a
You may make it form the engaging recessed part 46c in the circumference | surroundings.
In this protrusion 46, the pillar portion 46a, the mounting hole 46b, and the connecting plate portion 46d are the same as the pillar portion 6a, the mounting hole 6b, and the connecting plate portion 6d.
Respectively correspond to. Further, in the squeeze film 41, the through hole 41a and the protrusion fitting recess 41d are the through holes 1a of the squeeze film 1 described above.
And the protrusion fitting recessed portion 1d. Each of the engaging recesses 46c is formed in an annular shape on the outer peripheral portion of each of the pillars 46a so as to surround it. On the other hand, an annular engaging protrusion 41c is formed so as to surround the periphery of each through hole 41a of the compressed film 41 corresponding to the engaging recess 46c. Therefore, the engaging protrusions 41c formed on the compressed film 41 are in close contact with the engaging concave portions 46c of the protrusion 46, and the filtrate leaks from the front surface side to the rear surface side of the compressed film 1 or It is possible to effectively prevent the compressed fluid from leaking from the side to the surface side. This protrusion 46 is similar to the protrusion 6 in that the compression membrane 1 is attached to the protrusion mounting plate 27.
, 7 are attached, and the same effect as that of the protrusion 6 can be obtained.

Moreover, the engagement recesses 36c and 46c of the protrusions 36 and 46 and the engagement protrusions 31c and 41c of the squeeze membranes 31 and 41 may have an uneven relationship. That is, the engaging recesses 36c, 46
While the c is formed as the engaging projection, the engaging projections 31c and 41c of the compressed membranes 31 and 41 may be formed as the engaging recesses.

Further, the positions of the protrusions 6, 36, 46 and the protrusion mounting plate 27 on the filtration surface are arbitrary. For example, as shown in FIG. 26, the protruding portion 3c of the squeezing filter plate body 3 may be formed integrally with the outer frame 3a. That is, the undiluted solution supply port 51k
With respect to each of the protruding portions 3c, the protruding portions 3c are formed so as to extend radially, that is, from the outer frame 3a to the upper, lower, left, and right directions. It may be attached to the squeeze film 51. The second
In FIG. 6, 51 g corresponds to the opening 1 g of the compressed film 1. Further, as shown in FIG. 27, three protrusions 3c are formed on the upper side and the lower side of the stock solution supply port 61k, and the protrusions 6, 36, 46 are formed corresponding to the respective protrusions 3c. The protrusion attachment plate 27 may be attached to the squeeze membrane 61.

In addition, the surface of each of the protrusions 6, 36, 46 is the squeezed film 1, 31, 41.
The protrusions 6, 36, 46 may be fitted into the protrusion fitting recesses 1d, 31d, 41d of the squeeze membranes 1, 31, 41 so as to project from the surface of the.

Further, instead of forming the mounting hole 27a in the protrusion mounting plate 27 and screwing the bolt 7, the bolt is fixed to the mounting plate 27, and the protrusions 6, 36, 46 are passed through the bolt.
You may make it tighten with a nut. Further, the protrusion mounting plate 27 for each of the protrusions 6, 36, 46 is not limited to one in which both ends of a substantially rectangular plate are curved,
You may comprise from two or more. That is, the stem 6, 36, 4
It may be configured such that one protrusion mounting plate 27 of an arbitrary shape such as a circle is attached to each of the six pillar portions 6a, 36a, 46a.

Further, the protrusion mounting plate 27 is not limited to a rigid one, but is made of an elastic material that can be bent between the adjacent column portions 6a, 6a; 36a, 36a; The load on the squeeze membrane may be further reduced by allowing the pillar portions to freely bend in response to the movement.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 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 line II-II of FIG. 1, respectively. 3, 4 and 5 are front views of main parts in a state where a protrusion and a protrusion mounting plate are attached to a compression membrane, respectively. A compression filter in which the protrusion and the protrusion mounting plate are attached to the compression membrane. Fig. 6 is a cross-sectional side view of a main part and a cross-sectional plan view of the main part in a state where the plate and the normal filter plate are fastened, and Fig. 6 is a front view of the main part in a state where the protrusion and the protrusion mounting plate are attached by bolts. 7 and 8 are sectional views taken along the line VII-VII and VIII-VIII of FIG. 6, respectively, and FIGS. 9 and 10 are rear views of the main parts of the projecting member as seen from the line IX-IX of FIG. 8 respectively. A rear view of the main part of the protrusion mounting plate viewed from the XX line, and FIG. 11 is a cross-sectional side view of the main part of the filter press in the filter plate tightened state.
3 and 14 are front views of essential parts in a state where a protrusion and a protrusion mounting plate are attached to a compression membrane according to another embodiment, respectively, and the protrusion and the protrusion mounting plate correspond to the compression membrane. Fig. 15 is a sectional side view of a main part and a plan view of the main part in a state in which the attached compression filter plate and the normal filter plate are tightened, and Fig. 15 shows a state in which the protrusion and the protrusion mounting plate are attached by bolts. A front view of essential parts, FIGS. 16 and 17 are sectional views taken along the line XVI-XVI and line XVII-XVII of FIG. 15, and FIG. 18 is a sectional view taken along the line X of FIG.
Rear view of the main part of the stem as seen from the line VIII-XVIII, No. 19, 2
FIGS. 0 and 21 are front views of main parts in a state in which a protrusion and a protrusion mounting plate are attached to a compression membrane according to still another embodiment, respectively. The protrusion and the protrusion mounting plate are the compression membrane. FIG. 22 shows a state where the squeeze filter and the stab mounting plate are attached by bolts. FIG. 23 is a front view of a main part of FIG. 23, and FIG. 23 and FIG.
22. FIG. 26 is a front view of a main part of the protrusion of FIG. 22, FIG. 26 is a front view of a squeezing filter plate according to another embodiment, and FIG. 27 is a squeezing membrane according to still another embodiment, which is squeezed by dotted lines. It is a front view of the pressing membrane which showed the relationship with a filter plate. 1,31,41,51,61 ... Squeezing membrane, 1a, 31a, 41a
...... Through hole, 31c, 41c ...... Engagement protrusion, 1d, 31d, 4
1d ... Protrusion fitting recess, 2 ... Pressing filter plate, 3 ... Pressing filter plate body, 4 ... Normal filter plate, 6, 36, 46 ... Projector, 6a,
36a, 46a ... pillar part, 6b, 36b, 46b ... mounting hole, 3
6c, 46c ... engaging recess, 6d, 36d, 46d ... long connecting plate portion, 7 ... bolt, 8 ... filter cloth, 9 ... arm, 10
...... Pin, 11 ...... Spring, 12 …… Cleaning device, 13 ……
Cleaning tube, 14 ... front stand, 15 ... rear stand, 1
6 ... 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.

Claims (6)

[Claims] 1. A movably member with respect to a squeeze membrane plate body (3) when the squeeze membrane is expanded and covers the surface of the squeeze filter plate body (3), and is provided with a protrusion (6, 36, 46) on the surface , A rear face and a position corresponding to the protrusion (6, 36, 46), a protrusion attachment member (27) capable of contacting the main body (3) is provided, the protrusion (6, 36, 46) The squeeze film in the squeeze filter press that is attached to the protrusion attachment member (27) with the fixture (7), the protrusions (6, 36, 46) are the squeeze membranes (1, 31, 41). , 51, 61) is fitted into the through hole (1a, 31a, 41a), and the protrusion mounting member (27)
A plurality of pillars (6a, 36a, 46a) attached to the
(6a, 36a, 46a) through the mounting hole (6b, 36b, 46b) and the pillar portion (6a, 36a, 46a) and the pillar portion (6a,
36a, 46a), the compressed film (1, 31, 41, 51,
61) is provided with a long connecting plate portion (6d, 36d, 46d) for restricting the expansion, and the above-mentioned protrusion attachment member (27) is provided at each column portion (6) of the above-mentioned protrusion (6, 36, 46).
a, 36a, 46a) mounting holes (6b, 36b, 46b) to be inserted into the mounting member (7) for mounting the mounting portion (27a) is characterized in that the squeezing filter press film. 2. A stock solution supply port (1k, 51k, 61k) is provided at approximately the center of the filtration surface of the squeezing membrane (1, 31, 41, 51, 61),
The protrusions (6, 36, 46) and the protrusion mounting plate (27) are the undiluted solution supply ports (1k, 51k, 61k) around the undiluted solution supply ports (1k, 51k, 61k).
The squeeze film in the squeeze filter press according to claim 1, wherein the squeeze film is radially arranged with respect to the squeeze film. 3. The squeeze film (31, 41, 51, 61) is provided in the through hole (31).
a, 41a) is formed so as to surround the engagement portion (31c, 41c), the protrusion (36, 46), the engagement portion (31c, 41c) can be tightly engaged engagement portion The squeeze film in the squeeze filter press according to claim 1 or 2, further comprising (36c, 46c). 4. A squeeze film is disposed on the surface of the squeeze filter plate body (3) so as to be movable with respect to the squeeze film plate body (3) when the squeeze film expands, and the squeeze film (1 , 31,41,51,61) of the protrusions (6,36,46) on the surface of the
Corresponding to 6), the squeeze film (1, 31, 41, 51, 61) is provided on the rear surface of the squeeze member (27) capable of contacting the main body (3), and the stab (6, 36, 46) is a compression filter plate in a compression-type filter press in which the pressing membrane (1, 31, 41, 51, 61) is attached to the protrusion mounting member (27) with a fitting (7). Then, the protrusion (6, 36, 46) is fitted into the through hole (1a, 31a, 41a) of the compressed film (1, 31, 41, 51, 61), and the protrusion attachment member is attached. (27)
A plurality of pillars (6a, 36a, 46a) attached to the
(6a, 36a, 46a) through the mounting hole (6b, 36b, 46b) and the pillar portion (6a, 36a, 46a) and the pillar portion (6a,
36a, 46a), the compressed film (1, 31, 41, 51,
61) is provided with a long connecting plate portion (6d, 36d, 46d) for restricting the expansion, and the above-mentioned protrusion attachment member (27) is provided at each column portion (6) of the above-mentioned protrusion (6, 36, 46).
a, 36a, 46a) mounting holes (6b, 36b, 46b) to be inserted into the mounting member (7) for mounting the mounting portion (27a) is characterized in that the squeezing filter press Filter plate. 5. The squeezing filter plate body (3) and the squeezing membrane (1, 3)
1,41,51,61) at the center of the filtration surface (3k, 1k,
51k, 61k), the protrusions (6, 36, 46) and the protrusion mounting plate (27) are the stock solution supply port (3k, 1k, 51k, 61k) around the stock solution supply port (3k, 1k, 51k, 61k). The squeeze filter plate in the squeeze filter press according to claim 4, wherein the squeeze filter plates are radially arranged with respect to 3k, 1k, 51k, 61k). 6. The squeeze film (31, 41, 51, 61) is provided in the through hole (31).
a, 41a) is formed so as to surround the engagement portion (31c, 41c), the protrusion (36, 46), the engagement portion (31c, 41c) can be tightly engaged engagement portion The squeeze filter plate in the squeeze filter press according to claim 4 or 5, further comprising (36c, 46c).