JP2013081885A - Filter press apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter press apparatus in which a clamping device is downsized and a manufacturing cost is reduced.SOLUTION: The filter press apparatus includes: a rear head 1 and a first head 3 which are disposed so as to face each other by holding a filter plate group 5 therebetween; a loose head 2 which is arranged between the rear head 1 and the filter plate group 5 and is disposed so as to freely move forwards and backwards toward the first head 3; a clamping mechanism 6 which makes the loose head 2 advance toward the filter plate group 5 to clamp the filter plate group 5; a load bearing column 71 and a load bearing column 72 which extend from the rear head 1 and the loose head 2 respectively so as to face each other; and a cotter 73 which is inserted between these load-bearing columns. The filter press apparatus is provided with a load replacing and bearing mechanism 7 which is provided so that the top end surface of either one load-bearing column or top end surfaces of both load-bearing columns are inclined so that a space between those load-bearing columns becomes narrower toward a direction where the cotter 73 is inserted and the surface of the cotter 73 facing the inclined top end surface is inclined with the same inclination angle as the inclination angle of the inclined top end surface.

Description

  The present invention relates to a filter press apparatus for pressure-filtering a liquid to be treated.

  Conventionally, a filter press apparatus is known as an apparatus for solid-liquid separation of a liquid to be treated including sludge. In such a filter press apparatus, a filter plate group in which a plurality of filter plates are arranged side by side, a pair of fixed heads arranged to face each other across the filter plate group, one fixed head and the filter plate A moving head that is disposed between the moving head and is movable forward and backward toward the other fixed head, and a tightening mechanism that moves the moving head toward the filter plate group to tighten the filter plate group. There is. Here, as a tightening mechanism, a screw rod is screwed to one fixed head, the screw rod is rotated by a motor or the like and extended toward the filter plate group, and the moving head is attached to the filter plate by the screw rod. There are some which press and tighten the filter plate group. Also, as a tightening mechanism, a pandagraph type jack is attached between one fixed head and the moving head, and the pandagraph type jack is expanded to the moving head side by making the pandagraph type jack differential with a motor or the like. There is also a type in which a moving head is pressed against a filter plate with a jack to tighten a filter plate group (see Patent Document 1).

  In such a filter press apparatus, in a state where the filter plate group is tightened by the tightening mechanism, the liquid to be treated is pressed and filtered into the filter chamber formed between the filter plates, and then provided on one side of the filter chamber. The liquid to be treated in the filter chamber is squeezed by applying a higher squeezing pressure to the diaphragm. At this time, a reaction force corresponding to the pressure applied to the filter plate in each step of filtration and squeezing acts on the tightening device tightening the filter plate group in the direction opposite to the tightening direction. Hereinafter, this reaction force is referred to as a tightening reaction force. Thereafter, the filter plates are separated from each other and the dehydrated cake is discharged.

Japanese Patent No. 4135850

  However, in the above conventional filter press apparatus, the tightening reaction force is received by one of the fixed heads via the tightening mechanism, and the tightening reaction force continues to act on the tightening mechanism. It is required to withstand not only a relatively small tightening reaction force during filtration (pressure of about 0.4 MPa) but also a large tightening reaction force during compression (pressure of about 1.5 MPa). For this reason, there exists a problem that each structural member will enlarge and manufacturing cost will become high.

  Further, when the tightening device is formed by screwing the screw rod onto the fixed head as described above, the surface of the screw may be seized onto the fixed head due to a load during squeezing, which causes a problem. .

  In view of the above circumstances, the present invention provides a filter press device that can reduce the manufacturing cost of the entire device while reducing the size of the tightening device and ensuring a structure that can sufficiently withstand the tightening reaction force of the filter plate. It is intended to provide.

  The filter press device of the present invention includes a filter plate group in which a plurality of filter plates are arranged side by side, a first fixed head and a second fixed head arranged to face each other across the filter plate group, A moving head disposed between the fixed head of 1 and the filter plate group and provided so as to be movable forward and backward toward the second fixed head, and the moving head is advanced toward the filter plate group to tighten the filter plate group. Inserted between the tightening mechanism, the first load-bearing column and the second load-bearing column extending from each of the first fixed head and the movable head, and between the first load-bearing column and the second load-bearing column. The load-bearing block is inserted into the front end surface of one or both of the first and second load-bearing columns, and the distance between the first and second load-bearing columns is inserted. In front of the load-bearing block A load repositioning mechanism provided so that a surface that faces the inclined front end surface when inserted is inclined at the same inclination angle as the inclined front end surface; It is characterized (first filter press device).

  The filter press device includes an equalizer fixed by a pin hinge between one of the first and second load-bearing columns and the load-bearing block, and a load cell connected to the load-bearing block via the equalizer. It may have a pressure detection mechanism. Here, the equalizer has a function of preventing an out-of-plane force from acting on the load cell when the load-bearing block is inserted or removed between the first load-bearing column and the second load-bearing column.

  Further, the filter press device of the present invention includes a filter plate group in which a plurality of filter plates are arranged in parallel, and a first fixed head and a second fixed head that are arranged to face each other across the filter plate group. A moving head disposed between the first fixed head and the filter plate group and provided so as to be able to advance and retreat toward the second fixed head; and the filter head group by moving the moving head toward the filter plate group A tightening mechanism for tightening, a load bearing column extending from one of the first fixed head and the moving head toward the other head, and a load bearing block inserted between the load bearing column and the other head And the front end surface of the load-bearing column is inclined so that the interval between the load-bearing column and the other head is narrowed toward the direction in which the load-bearing block is inserted, and when the load-bearing block is inserted, Facing the inclined tip surface Inclination angle of the composed face is characterized in that a load Morikawa mechanism is provided so as to match the inclination angle of the distal end surface that the inclined (second filter press apparatus).

  This filter press device is provided with a pressure detection mechanism having an equalizer fixed by a pin hinge between a load bearing block and the other head, and a load cell connected to the load bearing block via the equalizer. Also good.

  In the first and second filter press apparatuses, the load bearing block may have a width adjusting mechanism that adjusts the width in the thickness direction, which is the same direction as the moving head's advance / retreat direction. As this width adjustment mechanism, for example, a first partial block and a second partial block provided so as to be relatively close to and away from each other in the thickness direction, and the first partial block and the second partial block, Between the first adjustment block and the second adjustment block, which are disposed so as to be relatively spaced apart from each other in the direction orthogonal to the thickness direction and close to each other. The first partial block and the second adjustment block The mutually opposing surfaces of the partial block are inclined so as to form a pair of wedge-shaped spaces corresponding to the first adjustment block and the second adjustment block between the first partial block and the second partial block. The first adjustment block and the second adjustment block each have an inclined surface facing the inner surface of the corresponding wedge-shaped space, and the first adjustment block and the second adjustment block are separated from each other. By contact, the first partial block and the second partial block proximity, it may be one which is separably configured.

  According to the first and second filter press apparatuses of the present invention, a filter plate group in which a plurality of filter plates are arranged side by side, a first fixed head disposed facing each other across the filter plate group, and A second fixed head; a moving head disposed between the first fixed head and the filter plate group; and a movable head provided to be movable forward and backward toward the second fixed head; and the moving head directed toward the filter plate group In addition to the tightening mechanism that moves forward and tightens the filter plate group, some or all of the reaction force (tightening reaction force) that acts in the direction opposite to the direction of tightening the filter plate during squeezing is applied from the tightening mechanism. Since it is further equipped with a load re-sending mechanism that takes charge of re-sizing, the pressure resistance required for the tightening mechanism can be reduced compared to the conventional filter press device, thereby miniaturizing the tightening device and reducing its production cost. Can be reduced.

  In the first filter press device, the load changing mechanism includes a first load-bearing column, a second load-bearing column, a first load-bearing column, and a first load-bearing column extending from each of the first fixed head and the moving head. Since the load-bearing block inserted between the two load-bearing columns is provided, by inserting the load-bearing block between the first load-bearing column and the second load-bearing column, the load-bearing block becomes the first load-bearing column. In addition, it is possible to form a column structure that is integrally connected to the second load-bearing column and supports between the first fixed head and the moving head.

  At this time, the distance between the first load-bearing column and the second load-bearing column varies somewhat depending on the distance between the first fixed head and the moving head, but the first load-bearing column and the second load-bearing column. The front end surfaces of either or both of the columns are inclined so that the distance between the first load-bearing column and the second load-bearing column is narrowed in the direction in which the load-bearing block is inserted, and the load-bearing block is inserted. Since the surface that will be opposed to the inclined tip surface when tilted is inclined at the same inclination angle as the inclined tip surface, the first load-bearing column and the second When the interval between the load-bearing columns is small, the load-bearing block is inserted shallowly, and when the interval is large, the load-bearing block is inserted deeply to cope with the variation. Furthermore, since the load replacement mechanism has a simple structure, the manufacturing cost can be kept low.

  Further, in the first filter press device, when detecting a load applied to the load changing mechanism by a load cell installed between any one of the first and second load-bearing columns and the load-bearing block, When the load cell is connected to the load-bearing block via an equalizer fixed by a pin hinge, it is possible to prevent an out-of-plane force from acting on the load cell when the load-bearing block is fitted and removed.

  Further, in the second filter press device, the load changing mechanism includes a load bearing column extending from one of the first fixed head and the moving head toward the other head, the load bearing column, and the other head. Since the load-bearing block is inserted between the load-bearing column and the other head, the load-bearing block is integrally connected to the load-bearing column. It is possible to form a pillar structure that supports between the fixed head and the movable head.

  At this time, the distance between the first load-bearing column and the second load-bearing column varies slightly depending on the distance between the first fixed head and the moving head, but the tip surface of the load-bearing column is the load-bearing column. The inclination angle of the surface that is inclined so that the distance between the head and the other head becomes narrower in the direction in which the load-bearing block is inserted and faces the inclined tip surface when the load-bearing block is inserted. Is provided so as to coincide with the inclination angle of the inclined front end surface, so that when the distance between the first load-bearing column and the second load-bearing column is small, the load-bearing block is inserted shallowly. If it is larger, it is possible to cope with the variation by inserting the strength block deeply. Furthermore, since the load replacement mechanism has a simple structure, the manufacturing cost can be kept low.

  Further, in the second filter press device, when detecting the load applied to the load changing mechanism by the load cell installed between the load bearing block and the other head, the load cell is passed through an equalizer fixed by a pin hinge. When connecting to the load-bearing block, it is possible to prevent an out-of-plane force from acting on the load cell when the load-bearing block is fitted and removed.

  In the first and second filter press apparatuses, when the load-bearing block has a width adjusting mechanism that adjusts the width in the thickness direction, which is the same direction as the moving head's advance / retreat direction, It is possible to cope with a wide width by the variation in the distance between the load-bearing column and the second load-bearing column.

The top view which shows schematic structure of the filter press apparatus of this invention AA sectional view of the filter press device of FIG. AA sectional view of the filter press apparatus of FIG. 1 (state after inserting the cotter) Sectional drawing which shows schematic structure of the filter press apparatus concerning 2nd Embodiment. Sectional drawing which shows schematic structure of the filter press apparatus concerning 3rd Embodiment BB sectional view of the filter press device of FIG. Front view showing cotter structure Plan view of the cotter of FIG. CC sectional view of FIG. A view of the cotter of FIG. 7 as viewed from the direction of arrow A Diagram for explaining width adjustment in width direction by width adjustment mechanism (minimum length state) Diagram for explaining width adjustment in width direction by width adjustment mechanism (minimum length state) The figure which shows the state which attached the auxiliary liner to the cotter A view of the auxiliary liner of FIG. 13 as viewed from the direction of arrow B

  Hereinafter, a first embodiment of a filter press apparatus of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of the filter press apparatus 100 of the present invention, and FIG. 2 is a cross-sectional view taken along line AA of the filter press apparatus 100 of FIG. As shown in FIG. 1, the filter press device 100 includes a rear head 1 (first fixed head) and a first head 3 (second fixed head) that are installed facing each other at positions separated from each other; A pair of side bars 4, 4 supported at both ends by the first head 3 and extending over the rear head 1 and the first head 3, and a plurality of filter plates are arranged in parallel along the side bars 4, 4. The filter plate group 5 and the loose head 2 provided between the rear head 1 and the filter plate group 5 so as to be movable along the side bars 4 and 4 (ie, to be able to advance and retreat toward the first head 3). (Moving head), a tightening mechanism 6 for advancing the loose head 2 toward the filter plate group 5 to tighten the filter plate group 5, and a part or all of the tightening reaction force of the filter plate from the tightening mechanism 6 Refilled and received One and a load Morikawa mechanism 7.

  The tightening mechanism 6 is screwed to the electric drive motor 62 provided on the rear surface of the rear head 1 and the center of the rear head 1 and is driven by the drive motor 62 so as to move forward and backward with respect to the loose head 4. And a screw rod 61 configured as described above. As a result, the drive motor 62 is driven to extend the screw rod 61 toward the loose head 4, thereby pressing and tightening the loose head 2 toward the filter plate group 5.

  The load changing mechanism 7 is provided with two sets in total, one set on each side of the tightening mechanism 6, and each set extends toward the loose head 2 of the rear head 1 as shown in FIG. The load-bearing column 71 (first load-bearing column), the load-bearing column 72 (second load-bearing column) extending from the loose head 2 to face the load-bearing column 71, and the load-bearing column 71 and the load-bearing column 72 are inserted from above. And a cotter opening / closing mechanism for inserting / removing the cotter 73 between the proof column 71 and the proof column 72.

The front end surfaces of the load-bearing column 71 and the load-bearing column 72 are inclined so that the distance between the load-bearing column 71 and the load-bearing column 72 decreases from the top to the bottom (that is, toward the direction in which the cotter 73 is inserted). The surfaces of the cotter 73 facing the tip surfaces of the load-bearing columns 71 and 72 are provided so as to be inclined at the same inclination angle as the inclination angles of the opposing tip surfaces . At this time, the inclination angle of the tip surfaces of the load-bearing columns 71 and 72 can be set to, for example, about 1/10 (vertical length / horizontal length). This inclination angle can be appropriately set and changed based on the friction coefficient of the materials of the load-bearing columns 71 and 72 and the cotter 73 and the cotter opening / closing force.

  In addition, the load-bearing columns 71 and 72 and the cotter 73 are made of a steel material or the like having a pressure resistance capable of handling a part or all of the tightening reaction force of the filter plate that acts during pressing.

  As shown in FIG. 2, the cotter opening / closing mechanism includes an electric cylinder 74, an L-shaped lever 76, a balancer 77, and a parallelogram link 78. The L-shaped lever 76 is rotatably supported at the tip of a base member fixed to the rear head 1, one end of which is attached to the tip of the telescopic rod 74a of the electric cylinder 74, and the other end has a balancer 77 and parallel four sides. A cotter 73 is suspended via a shaped link 78. The L-shaped lever 76 converts the linear motion of the telescopic rod 74a into an arc motion, and creates a linear motion that moves the cotter 10 up and down. By moving the cotter 73 up and down in this way, the cotter 73 is inserted or removed between the load-bearing column 71 and the load-bearing column 72. 2 shows a state before the cotter 73 is inserted between the load-bearing column 71 and the load-bearing column 72, and FIG. 3 shows a state after the cotter 73 is inserted between the load-bearing column 71 and the load-bearing column 72.

  Here, the balancer 77 is for balancing the suspended members, and the parallelogram link 78 is for adjusting the position of the cotter 73 in the horizontal direction. The positions of the load-bearing columns 71 and 72 and the position of the cotter 73 may vary somewhat during operation due to geometrical or deflection, but at this time, the cotter 73 is moved in the horizontal direction by the parallelogram link 78. The insertion position of the cotter 73 with respect to the space between the strength column 71 and the strength column 72 can be adjusted.

  With the above configuration, when pressure filtration is performed, first, the drive motor 62 is driven to rotate forward and the screw rod 61 is extended toward the loose head 4 side to press the loose head 2 toward the filter plate group 5. In a state where the loose head 4 and the filter plate group 5 are tightened, the liquid to be treated is pressed into a filter chamber formed between the filter plates, and filtration is performed. Thereafter, the cotter 73 is inserted between the load-bearing column 71 and the load-bearing column 72 by the cotter opening / closing mechanism. At this time, the opposing surfaces of the load-bearing column 71 and the cotter 73 and between the load-bearing column 72 and the cotter 73 are brought into contact with each other without any gap, and the cotter 73 is brought into contact with the load-bearing columns 71 and 72 by its own weight and friction between the contacted surfaces. A pillar structure (a pillar structure having a length dimension matching the distance between the two) is formed by being integrally connected to support the rear head 1 and the loose head 4.

  Thereafter, the drive motor 62 is driven in reverse to gradually contract the screw rod 61, whereby the tightening reaction force of the filter plate is gradually replaced from the tightening mechanism 6 to the formed column structure. Then, the screw rod 61 is completely separated from the loose head 4 so that all the reaction force of tightening the filter plate is handled by the column structure, and the diaphragm provided on one side of the filter chamber is further pressurized. The liquid to be treated in the filter chamber is squeezed by applying a squeezing pressure. When the squeezing is completed, the filter plates are separated from each other, the dehydrated cake is discharged, and the process ends.

  Next, a second embodiment of the filter press apparatus of the present invention will be described with reference to FIG. FIG. 4 is a cross-sectional view of a filter press device 200 according to the second embodiment. 4 corresponds to the cross-sectional view of FIG. 3 with respect to the filter press apparatus 100 of FIG.

  The filter press device 200 is different from the filter press 100 according to the first embodiment in that the load replacement mechanism 7 ′ has one load bearing column 71 extending from the rear head 1 toward the loose head 2, and Between the cotter 73 ′ and the loose head 2, a pillar structure that supports between the rear head 1 and the loose head 2 is formed by a cotter 73 ′ inserted between the load bearing column 71 and the loose head 2. The difference is that a pressure detection mechanism 8 is provided. In addition, in the filter press apparatus 200, the same code | symbol is attached | subjected to the site | part which has the same structure as the filter press apparatus 100, and the description is abbreviate | omitted.

  As shown in FIG. 4, the set of load changing mechanisms 7 ′ includes a load bearing column 71 extending from the rear head 1 toward the loose head 2, and a cotter 73 ′ inserted between the load bearing column 71 and the loose head 2. (Load bearing block) and a cotter opening / closing mechanism for inserting and extracting the cotter 73 ′ between the load bearing column 71 and the pressure detection mechanism 8.

  The load-bearing column 71 has a tip end surface that is inclined so that the interval between the load-bearing column 71 and the loose head 2 is narrowed from above to below (that is, toward the direction in which the cotter 73 ′ is inserted). 73 ′ has an inclined surface inclined at the same inclination angle as the inclination angle of the front end surface as a surface facing the front end surface of the load bearing column 71, and a surface of the filter plate as a surface that comes into contact with the pressure detection mechanism 8. It has a plane orthogonal to the tightening direction. At this time, the inclination angle of the front end surface of the load-bearing column 71 can be, for example, about 1/10 (length in the vertical direction / length in the horizontal direction). This inclination angle can be appropriately set and changed based on the friction coefficient of the materials of the load-bearing column 71 and the cotter 73 ′ and the cotter opening / closing force.

  When the cotter 73 ′ is inserted between the load-bearing column 71 and the pressure detection mechanism 8 by the cotter opening / closing mechanism, the load-bearing column 71 and the cotter 73 ′ and the opposing surfaces of the pressure detection mechanism 8 and the cotter 73 ′ are spaced from each other. The cotter 73 ′ is integrally connected to the load bearing column 71 and the pressure detection mechanism 8 to support the space between the rear head 1 and the loose head 4 (a column having a length corresponding to the distance between the two). Structure).

  As shown in FIG. 4, the pressure detection mechanism 8 includes an equalizer 82 fixed by a pin hinge 81 and a load cell 83 connected to the cotter 73 ′ via the equalizer 82, and detects the pressure applied to the column structure. ,Output. In addition, you may further provide the structure which controls the operation | movement of a cotter opening-closing mechanism, the magnitude | size of pressing pressure, etc. using the output from this pressure detection mechanism 8. FIG.

  Next, a third embodiment of the filter press apparatus of the present invention will be described with reference to FIGS. FIG. 5 is a cross-sectional view of a filter press apparatus 300 according to the third embodiment, and FIG. 6 is a cross-sectional view of the filter press apparatus 300 of FIG. FIGS. 7 to 12 are diagrams showing a more detailed configuration of the cotter 73 ′ used in the filter press device 300. The cross-sectional view of FIG. 5 corresponds to the cross-sectional view of FIG. 3 with respect to the filter press apparatus 100 of FIG.

  The filter press apparatus 300 is different from the filter press 200 according to the second embodiment in the structure of the cotter opening / closing mechanism. In addition, in the filter press apparatus 300, the same code | symbol is attached | subjected to the site | part which has the same structure as the filter press apparatus 200, and the description is abbreviate | omitted.

  As shown in FIG. 5, the cotter opening / closing mechanism includes an opening / closing mechanism support 703, an electric cylinder 704, a guide support 706, and a cotter guide 707. The opening / closing mechanism support base 703 is erected on the top end side of the load bearing column 71, and by driving an electric cylinder 704 fixed to the upper end portion of the opening / closing mechanism support base 703, the expansion / contraction rod 704a is expanded / contracted. The cotter 73 ′ connected to the tip of the stub is formed so that it can be inserted into and extracted from the space between the load-bearing column 71 and the pressure detection mechanism 8 along the cotter guide 707. Here, the cotter guide 707 forms an identical inclined surface that extends continuously upward from the distal end surface of the load-bearing column 71.

  As described above, according to the present embodiment in which the cotter 73 ′ is inserted and extracted along the cotter guide 707, the cotter is inserted and extracted as compared with the first and second embodiments. Operation can be made smoother.

  Further, in the cotter opening / closing mechanism according to the present embodiment, when the cotter 73 ′ is inserted, the cotter 73 ′ can be pushed between the load-bearing column 71 and the pressure detection mechanism 8 by the extension force of the rod 74a. The opposing surfaces of 71 and cotter 73 ′ and pressure detection mechanism 8 and cotter 73 ′ can be more reliably brought into close contact with each other so that a more sturdy column structure can be formed. At this time, the pushing force for pushing the cotter 73 ′ may be controlled by a torque limiter built in the cotter opening / closing device. As a torque limiter, for example, a combination of a disc spring and a limit switch is known.

  Further, as shown in the front view of FIG. 7, the cotter 73 ′ in the present embodiment includes a cotter body 731 having a connection portion 731 a to the cotter opening / closing device on the upper surface, and a cotter body 731 attached to the cotter body 731. It is composed of a width adjusting mechanism that adjusts the width of 73 ′ in the thickness direction (the same direction as the forward and backward directions of the loose head 2). The width adjusting mechanism includes a partial block 732a (first partial block) and a partial block 732b (second partial block) which are provided so as to be relatively close to and away from each other in the thickness direction, and the partial block 732a and the partial block 732a. An adjustment block 733a (first adjustment block) and an adjustment block 733b (second adjustment block) which are arranged between the blocks 732b and are provided so as to be relatively spaced apart from and close to each other in the direction orthogonal to the thickness direction. Have.

  Further, as shown in FIG. 8 which is a plan view of FIG. 8 and FIG. 9 which is a sectional view taken along the line C-C of FIG. 8, and FIG. 10 which is a view of the cotter 73 ′ of FIG. The front end portion (left end portion) of the positioning bar 735 penetrating through the through holes 742a and 742b provided at two locations in the center of the side surface of the cotter body corresponds to the through holes 742a and 742b on the right side surface of the cotter body 731. The cotter body 731, the partial block 732 a, and the partial block 732 b are spaced from each other by a pair of springs 736 in a state where the cotter body 731, the partial block 732 a, and the partial block 732 b are respectively positioned. It is biased in the direction of narrowing. The partial block 732b is formed so that the diameter of the through hole 742b is larger than the diameter of the positioning bar 25 so as to be slidable with respect to the positioning bar 25.

  Further, the mutually opposing surfaces of the partial block 732a and the partial block 732b are inclined so as to form a pair of wedge-shaped spaces corresponding to the adjustment block 733a and the adjustment block 733b between the partial block 732a and the partial block 732b, Each of the adjustment block 733a and the adjustment block 733b has an inclined surface facing the inner surface of the corresponding wedge-shaped space. The inclined surfaces of the adjustment block 733a and the adjustment block 733b are inclined at the same inclination angle as the inclination angle of the opposing surfaces. At this time, the inclination angle of the opposing surfaces of the partial blocks 732a and 732b can be, for example, about 1/5 (vertical length / horizontal length). This inclination angle can be appropriately set and changed based on the friction coefficient and the cotter opening / closing force of the materials of the partial blocks 732a and 732b and the adjustment blocks 733a and 733b.

  As shown in FIGS. 11 and 12, one screw bolt 734 is screwed into the adjustment block 733a and the adjustment block 733b. The adjustment block 733a and the adjustment block 733b are respectively provided with screw holes 743a and 743b of reverse left and right screws, and both screw bolts 734 have upper portions corresponding to the screw holes 743a and 743b of the adjustment block 733a and the adjustment block 733b. Reverse screws are formed at the lower part. As for both screw bolts 734, the upper screw 5a is screwed into the adjustment block 733a, the lower screw 5b is screwed into the adjustment block 733b, and by rotating both screw bolts 30, the relative distance between the adjustment block 733a and the adjustment block 733b is increased. It can be adjusted. For example, if the adjustment block 733a has a left screw thread and the adjustment block 733b has a right screw hole, when both screw bolts 734 are rotated clockwise, the adjustment block 733a and the adjustment block 733b approach each other, and both screw bolts 734 are rotated counterclockwise. Then, the adjustment block 733a and the adjustment block 733b are moved away from each other.

  At this time, since the partial block 732b and the cotter body 731 are always pulled by the spring 736, when the adjustment block 733a and the adjustment block 733b are moved away from each other, the partial block 732b and the cotter body 731 are moved to the spring 736 as shown in FIG. Due to the pulling force, the cotter 73 ′ becomes thinner in the thickness direction. When the adjustment block 733a and the adjustment block 733b approach each other, as shown in FIG. 12, the partial block 732b and the cotter body 731 move away from each other, and the width in the thickness direction of the cotter 73 ′ increases.

  As shown in FIG. 13, the cotter 73 ′ can be further increased in width in the thickness direction by further attaching an auxiliary liner 738 (third adjustment block). FIG. 13 is a front view showing a state in which the auxiliary liner 738 is attached to the cotter 73 ′, and FIG. 14 is a view of the auxiliary liner 738 in FIG. As shown in FIGS. 13 and 14, screw holes 738a are provided at four end portions of the side surface of the auxiliary liner 738, and the auxiliary liner 738 side surface of the partial block 732b corresponds to each screw hole of the auxiliary liner 738. Auxiliary liner 738 can be attached by providing screw holes 752b at the locations where the tip ends of set bolts 739 through which the respective screw holes 738a are inserted are screwed into the screw holes 752b of the partial block 732b.

  According to the filter press apparatus 100; 200; 300 according to each of the above embodiments, the filter plate group 5 in which a plurality of filter plates are arranged side by side, and the rear head disposed so as to face each other across the filter plate group 1 and the first head 3, the loose head 2 disposed between the rear head 1 and the filter plate group 5 so as to be movable forward and backward toward the first head 3, and the loose head 2 facing the filter plate group 5 In addition to the tightening mechanism 6 for advancing and tightening the filter plate group 5, a part or all of the reaction force (tightening reaction force) acting in the direction opposite to the direction of tightening the filter plate during squeezing is tightened Since the load repositioning mechanism 7; 70; 700 which is refilled from the mechanism 6 is further provided, the pressure resistance required for the tightening mechanism can be reduced as compared with the conventional filter press apparatus, and thereby the tightening apparatus. Downsizing and manufacturing It is possible to reduce the strike.

  In the above-described embodiment, after the filtration is finished and before the squeezing is started, the filter plate tightening reaction force is completely refilled from the tightening mechanism 6 to the load refilling mechanism 7, and the tightening reaction force at the time of squeezing is all loaded. Although the case where the replacement mechanism 7 takes charge is illustrated, the tightening mechanism 6 and the load replacement mechanism 7 may be configured to take charge of each part.

  Moreover, in the said embodiment, although illustrated about the case where the load replacement mechanism 7 was only responsible for the clamping reaction force at the time of pressing, the load replacement mechanism 7 also has a part of the reaction force at the time of filtration or You may comprise so that it may take charge of all.

  Further, in the first embodiment, the case where the tip surfaces of both of the two load-bearing columns 71 and 72 are tilted is illustrated, but only one of the tip surfaces is tilted. The other end face may have a cross section perpendicular to the longitudinal direction of the load-bearing column.

  Moreover, in the said embodiment, when inserting a cotter and forming the pillar structure which supports between the rear head 1 and the loose head 4, it illustrates about the case where a cotter is inserted from upper direction to the downward direction. However, the present invention is not limited to this direction, and it may be configured to be inserted from any direction such as from below to above and from the side toward the center of the column structure.

  In the above embodiment, the case where the cotter is fixed at the position where the cotter is inserted by its own weight is illustrated. However, in order to securely fix the cotter at the position where the cotter is inserted, a lock mechanism is further provided. Also good.

  In the third embodiment, the case where the cotter 73 ′ is provided with a width adjusting mechanism and an auxiliary liner 738 is illustrated. However, these configurations are not necessarily required and may be installed as necessary. That's fine. Although the case where the auxiliary liner 738 is attached to the width adjusting mechanism has been described here, it may be attached directly to the cotter body.

1 Rear head (first fixed head)
3 First head (second fixed head)
4 Sidebar 5 Filter plate group 2 Loose head (moving head)
6 Tightening mechanism 61 Threaded rod 62 Drive motor 7, 70, 700 Load changing mechanism 71 Load bearing column (first load bearing column)
72 Load-bearing column (second load-bearing column)
73, 73 'Cotter 74 Electric cylinder 76 L-shaped lever 78 Parallelogram link 8 Pressure detection mechanism 81 Pin hinge 82 Equalizer 83 Load cell 100, 200, 300 Filter press device 704 Electric cylinder 707 Cotter guide 732a, 732b Partial block 733a, 733b Adjustment Block 734 Both screw bolts 735 Positioning bar 736 Spring 738 Auxiliary liner

Claims (6)

A filter plate group in which a plurality of filter plates are arranged in parallel;
A first fixed head and a second fixed head arranged to face each other across the filter plate group;
A moving head disposed between the first fixed head and the filter plate group and provided so as to be movable forward and backward toward the second fixed head;
A tightening mechanism for advancing the moving head toward the filter plate group and tightening the filter plate group;
First and second load-bearing columns extending from each of the first fixed head and the movable head and facing each other, and a load-bearing force inserted between the first and second load-bearing columns A front end surface of one or both of the first load-bearing column and the second load-bearing column, and an interval between the first load-bearing column and the second load-bearing column is the load-bearing block. The surface of the load-bearing block that is inclined so as to narrow toward the insertion direction and that faces the inclined tip surface when the load-bearing block is inserted has the same inclination angle as the inclination angle of the inclined tip surface. A filter press device comprising: a load changing mechanism provided to be inclined. A filter plate group in which a plurality of filter plates are arranged in parallel;
A first fixed head and a second fixed head arranged to face each other across the filter plate group;
A moving head disposed between the first fixed head and the filter plate group and provided so as to be movable forward and backward toward the second fixed head;
A tightening mechanism for advancing the moving head toward the filter plate group and tightening the filter plate group;
A load-bearing column extending from one of the first fixed head and the moving head toward the other head, and a load-bearing block inserted between the load-bearing column and the other head, The front end surface of the load-bearing column is inclined so that the interval between the load-bearing column and the other head is narrowed toward the direction in which the load-bearing block is inserted, and the tilted when the load-bearing block is inserted. And a load changing mechanism provided so that an inclination angle of a surface facing the tip end face coincides with an inclination angle of the inclined tip end face.   The filter press apparatus according to claim 1, wherein the load-bearing block has a width adjusting mechanism that adjusts a width in a thickness direction that is the same direction as the moving direction of the moving head. The load-bearing block is provided between the first partial block and the second partial block, and the first partial block and the second partial block provided so as to be relatively close to and away from each other in the thickness direction. And a first adjustment block and a second adjustment block provided so as to be relatively spaced apart from each other in the direction orthogonal to the thickness direction, and a second adjustment block.
A pair of surfaces in which the first partial block and the second partial block face each other correspond to the first adjustment block and the second adjustment block between the first partial block and the second partial block. The first adjustment block and the second adjustment block each have an inclined surface opposed to the inner side surface of the corresponding wedge-shaped space, and the first adjustment block and the second adjustment block are inclined to form a wedge-shaped space. 4. The filter according to claim 3, wherein the first partial block and the second partial block can be brought close to and separated from each other by moving the adjustment block and the second adjustment block apart from and close to each other. Press device. A pressure detection mechanism is provided between one of the first and second load-bearing columns and the load-bearing block;
5. The filter press according to claim 1, wherein the pressure detection mechanism includes an equalizer fixed by a pin hinge, and a load cell connected to the load-bearing block via the equalizer. apparatus. A pressure detection mechanism is provided between the load-bearing block and the other head,
5. The filter press according to claim 2, wherein the pressure detection mechanism includes an equalizer fixed by a pin hinge, and a load cell connected to the load-bearing block via the equalizer. apparatus.

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