JP2755932B2 - Filter press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter press in which a stock solution is separated into a filtrate and a residue by filtration or compression filtration, and more particularly, to a filter cloth device used for each filter plate or compressed filter plate.

[0002]

2. Description of the Related Art In a filter press in which the tightening of a filter plate or a press filter plate and the opening of a frame are repeated to repeatedly perform filtration and collection of the filter residue, the filter cloth is washed without opening and falling onto the filter cloth when the frame is opened. In order to remove the attached filter residue, there has been known an apparatus in which a filter cloth is caused to run on a filter plate or a pressed filter plate. The present applicant has proposed various inventions for a filter press provided with such a filter cloth traveling device. For example, Japanese Patent Publication No. 55-37928 discloses the following inventions.

In the filter press shown in FIG.
Is a front stand supporting the main plate 2, 3 is a rear stand,
Reference numerals 4 and 4 denote side beams which are provided between both sides of the front and rear stands 1 and 3, respectively.
And a pair of handles 5a, 5a provided on both sides.
Is a filter plate which can be moved in the front-rear direction while being slidably mounted on the side beams 4, 4. A movable plate 7 is driven forward and backward by a driving piston 8 supported on the rear stand 3. , The movable plate 7 is shown in a retracted position A shown by a virtual line in the figure.
When the vehicle is moved backward, the filter plates 5 can be simultaneously opened at predetermined intervals determined by the connecting links 6 and 6. On the other hand, reference numerals 9 and 9 denote a pair of left and right drive shafts having a polygonal cross section which are supported between the upper sides of the front and rear stands 1 and 3, respectively, as shown in FIG. The filter plate 5 is formed by the members 10 and 10.
The right and left pair of take-up pulleys 11 and 11 rotatably supported on both upper sides of the motor are respectively fitted to the right and left of a motor 13 with a speed reducer mounted on a mounting table 12 mounted on the upper part of the rear stand 3. By the reverse drive, the pair of left and right drive shafts 9 can be driven forward and reverse via the bevel gear transmission mechanism 14. The left and right winding pulleys 11, 1
1, a suspending cord 15 having one end locked to each take-up pulley 11 is wound around the other end, and the other end is fastened to a connection fitting 18 attached to an end of a filter cloth hanging rod 17 that supports the filter cloth 16. ing.
Reference numerals 19, 19 denote a pair of left and right support fittings attached to the lower surface of the filter frame of the filter plate 5, and between the support fittings 19, 19 projecting downward, a take-up roller 20 of the filter cloth 16 is journaled at the upper center thereof. At the same time, guide rollers 21 and 21 are pivotally supported below the winding roller 20 on both sides in the thickness direction of the filter plate 5. Reference numeral 22 denotes a washing pipe attached between the lowermost portions of the support fittings 19, 19. The washing pipe 22 is provided with a large number of washing nozzles 23,. I have to. As shown in FIG. 11, the take-up roller 20 has filter surfaces 5b,
5b, each covering two filter cloths 16-1 and 16-2
Are wound around each of the guide rollers 21 and 21, respectively, and are wound together so that the ends of the two filter cloths 16-1 and 16-2 are locked and fixed to the winding roller 20. The take-up roller 20 is constantly urged in the rotating direction to wind up the filter cloths 16-1 and 16-2 by the action of a torsion spring provided inside the roller.

The conventional filter press constructed as described above operates as follows. Now, as shown by the solid line in FIG. 11, when the filter plates 5,..., 5 are fastened to the front stand 1 side at the same time as the movable plate 7 advances, the front stand 1
The undiluted solution press-fitted between the filter cloths 16 and 16 from the undiluted solution supply pipe 1a supported by the filter solution through the undiluted solution supply port 5c of each filter plate 5 (see FIG. 12) and the undiluted solution supply fitting 16a attached to each filter cloth 16 The filtrate is separated into a filtrate residue and a filtrate, and the separated filtrate is collected from the filtrate collection tube 24 to perform filtration. When one filtration process is completed and the movable plate 7 is retracted to the position A in FIG. 11, the respective filter plates 5 sequentially connected from the movable plate 7 side by the connection links 6 and 6 become as shown in FIG. At the same time, the frames are opened at a fixed interval from each other. Simultaneously with the opening of the frame, the separated filter residue falls by gravity while remaining in a cake form. At the stage where the filter residue has dropped, the filter cloth 16 is spread slightly away from the filter plate 5. At this stage, the motor 13 is driven in the rewind direction while decelerating, and the left and right drive shafts 9 are driven. When the suspension cord 15 wound around the winding pulleys 11 and 11 is rewound by using the winding rollers 20, the filter cloths 16-1 and 16-2 on both sides of each filter plate 5 are respectively rotated by the winding rotation of the winding roller 20. The guide rollers 21 and 21 are both wound around the winding roller 20 while undergoing a direction change of about 180 °. still,
For example, when the filter cloths 16-1 and 16-2 are wound on the take-up roller 20, the filter cloths 16-1 and 16-2 are cleaned by the cleaning liquid sprayed from the cleaning nozzle 23. The filter cloths 16-1 and 16-2 once wound on the winding roller 20 are then driven by the motor 13 to wind up, and the winding pulleys 11 and 1-2 are driven.
1 is driven in the winding direction, and the suspension cords 15, 15 connected to the upper end side of the filter cloth 16 are wound on the winding pulleys 11, 11.
While charging the torsion spring 26 provided on the take-up roller 20, the filter cloths 16-1 and 16-2 are wound up to a certain position to prepare for the next filtration step.

[0005]

In the above-described conventional filter press, the up-and-down movement of the filter cloths 16-1 and 16-2 is caused by the hanging strap 15 of the filter cloths 16-1 and 16-2 as described above.
Is driven by a motor 13 via a left and right drive shafts 9, 9. That is,
As shown in FIGS. 11 and 12, the take-up pulley 11 which requires a total of two drive shafts 9 on the left and right along the arrangement direction of the filter plates 5 and is supported by a support member 10 provided on the filter plates 5 is provided. Drive shaft 9,
9. Therefore, all winding pulleys 1
The center of rotation of the drive shaft 1 must be aligned with the axis of the drive shaft 9, which may be difficult to manufacture, and also makes it difficult to synchronize the rotation of the left and right drive shafts 9, 9. Further, such a mechanism is preferably applied only to a filter press of a type in which all the filter plates 5 are opened by the connecting link 6. That is, since all the take-up pulleys 11 are rotated by driving the drive shafts 9 and 9, if only a part of the filter plates 5 is opened, the filter sandwiched by the filter plates 5 that are not opened is opened. Cloth 16-
The filter cloths 16-1 and 16-2 cannot move down even if the hanging string 15 is unwound, but these filter cloths 16-1 and 16-2 do not move down.
Is also forcibly rewound as the take-up pulley 11 rotates. Therefore, there is a possibility that the hanging string 15 will be slack and hinder the next winding operation. The present invention has been made in order to solve such a drawback, and is a filter press without the above-mentioned drive shaft, which is easy to manufacture including a take-up and rewinding device for lifting and hanging a filter cloth. It is an object of the present invention to provide a filter press having a winding and rewinding device that can synchronize the left and right take-up pulleys and can also be applied to a filter press of a type in which only some of the filter plates are opened. .

[0006]

SUMMARY OF THE INVENTION The present invention relates to a filter press in which a plurality of filter plates are arranged between a front stand and a rear stand. The filter press is provided with a winding and rewinding device for winding and rewinding each of the cords for the filter, and the filter cloth is moved between an upper end position where the filter cloth is extended and a lower end position below the upper end position. In a filter press, which is supported so as to move up and down between adjacent filter plates and rewinds the string-like body with the winding and rewinding device after opening the filter plate, the filter cloth is moved up and down. The return device is disposed at the left and right positions of the filter plate in the left and right direction perpendicular to the arrangement direction in which the filter plates are arranged, and winds each of the cords in the same direction, and the rotational force of the filter cloth in the drop direction is the cord. A wheel acting through the body, and placed on top of the filter plate, A connecting member that is wrapped around the rotational force acting members of the left and right wheels to connect the left and right wheels rotatably to each other in the same direction, a connecting member moving member attached to the connecting member, and all filter plates. One rod-shaped member extending upward and extending in the arrangement direction, and contacting the moving member for the connecting member while being pressed by the pulling direction pulling force acting on the connecting member by the rotating force of the wheel in the dropping direction And a rod-shaped member moving device for moving the rod-shaped member in the left-right direction, and when the filter cloth is moved upward to the upper end position, the pulling force in the drop direction is applied to the rod-shaped member via the connecting member moving member. By moving the rod-shaped member by the rod-shaped member moving device in a direction opposite to the direction in which the member acts on the anti-pulling force, the moving member for the connecting member is forcibly moved. And wherein the door.

[0007] By adopting such a configuration, there is no drive shaft to be fitted to the take-up pulley for winding the string-like body hanging the filter cloth. Furthermore, since the connecting member rotates the left and right wheels in the same direction, it acts to easily synchronize the rotation of both wheels. Further, since the moving member for the connecting member is moved by the rod-shaped member and the wheel is rotated, it is possible to solve the difficulty in manufacturing, in which a large number of winding pulleys are fitted to the drive shaft as in the related art. And acts to enable easy fabrication.

When the filter cloth is moved down to the lower end position, the rod-like member moving device moves the rod-like member in a direction in which the pulling force in the drop direction acts, so that the connection with the rod-like member can be separated. You may comprise so that a member moving member may be moved.

[0009] With this configuration, since the moving member for the connecting member is in contact with the rod-shaped member while being pressed,
When the bar-shaped member is moved in the direction in which the pulling force acts in the falling direction, the bar-shaped member and the connecting member moving member can be separated. Therefore, when moving the rod-shaped member in the direction in which the pulling force acts in the falling direction, the wheel winding the string-shaped body connected to the filter cloth sandwiched between the filter plates that are not open is connected to the moving member for the connecting member. Are not forcibly rotated, and the string does not come off the slack wheel.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A filter press according to an embodiment of the present invention will be described below with reference to the drawings. Parts having the same functions as the constituent parts shown in FIGS. 11 and 12 are denoted by the same reference numerals. In the filter press of the present embodiment shown in FIG. 5, 1 is a front stand supporting the main plate 2, 3 is a rear stand, 4 and 4 are front beams and side beams passed between both sides of the rear stands 1 and 3, respectively. , 50, 5
Are connected to each other by connecting links 6, 6, and a pair of handles 50a, 50a, 51 provided on both sides are provided.
The filter plate 7, which can be moved in the front-rear direction while the slide plates a, 51a are slidably mounted on the side beams 4, 4, is driven forward and backward by a driving piston 8 supported on the rear stand 3. It is a movable plate. In the filter press shown in FIG. 5, when the movable plate 7 is moved backward to the retreat position A as shown in the figure, the filter plates 50, 51 are simultaneously moved at a predetermined interval determined by the connecting links 6, 6. The type which can be opened is shown. In the drawing, the thicknesses of the adjacent filter plates 50 and 51 are different from each other, depending on the presence or absence of a mechanism for a winding and rewinding device described later. Further, the filter plates in the present embodiment are all ordinary filter plates, but for example, ordinary filter plates and compressed filter plates may be alternately arranged, or all may be compressed filter plates.

Next, a winding and rewinding device which is a characteristic part of the present embodiment will be described. In addition, in this specification, the left-right direction is a direction (left-right direction in FIG. 1) orthogonal to the arrangement direction in which the filter plates 50 and 51 are arranged.
Say. Also, wheels 63-1, 63-2,
64-1, 64-2, traveling cart 71a, rod-shaped member 81,
The take-up / rewind device is constituted by the motor 84 with a speed reducer and the components related thereto. As shown in FIG.
Support members 61, 62 erected at the left and right positions on the upper surface 50b of the
As a result, the wheels 63-1 and 64-1 are rotatably supported on the left and right sides above the filter plate 50. Wheel 63-
For example, a pulley is used as 1, 64-1, and one end of a string-like body 15 made of, for example, a metal wire is locked to the wheels 63-1 and 64-1. In this embodiment, since the width of the filter cloth hanging bar 17 does not protrude from the width of the filter plate 50, the string-like body 15 is attached to the right support member 62 in FIG. A width-pulling pulley 65 for shifting the width to the side is rotatably attached. If the above-mentioned width shifting is not necessary, the width shifting pulley 65 can be omitted. In the present embodiment, the wheel 6 described above is used.
Filter plate 5 provided with 3-1, 63-2, 64-1, 64-2
0 and the filter plates 51 not provided are arranged alternately, and as shown in FIG. 4, in the filter plate 50, each wheel has a pair of wheels 63-1 and 63-2 along the arrangement direction. Wheels 64-1 and 64-2 are provided, and wheels 63-1 and 63-2 and a wheel 6 are provided.
4-1 and 64-2 are fixed to both ends of a shaft 66 rotatably supported by support members 61 and 62, respectively. Also, the wheels 63-1, 63-2, 64-1, 64
-2 at the center of each shaft 66, a sprocket 67
Are fitted, and a chain 68 as a connecting member is looped around both sprockets 67. Therefore, the left and right wheels 63-1, 63-2, 64-1, and 64-2 are rotated by the chain 68 while being tuned in the same direction. still,
The above-mentioned chain 68 is preferable as a connecting member of the wheels 63-1, 63-2, 64-1, and 64-2, but is not limited thereto. For example, a metal wire or the like can be used. When a metal wire or the like is used, a pulley is used instead of the sprocket 67.

Further, at a position above the chain 68,
A moving member 71 for a connecting member capable of abutting on a rod-shaped member 81 described later and moving the chain 68 in the left-right direction with the movement of the rod-shaped member 81 is engaged. Moving member 71 for connecting member
For example, a simple protruding member attached to the chain 68 may be used, but in the present embodiment, as shown in the figure, a member is protruded from a bogie supported by a pair of front and rear wheels, and a tip portion of the member is provided. A traveling carriage 71a having a contact roller 72 attached to the rod-shaped member 81 is adopted. Incidentally, the point that the rod-shaped member 81 and the contact roller 72 are brought into contact with each other to transmit the force, and that a cylindrical member is employed as the contact roller 72, the mutual relationship between the contact roller 72 and the rod-shaped member 81 is increased. High accuracy is not required for mounting, and production is easy. Furthermore, by using an elastic body such as a rubber material for the contact roller 72, the contact roller 72 can also serve as a buffer for the contact. Also, with the use of such a traveling cart, the left and right wheels 63-1, 6-3
A rail 69 extending along the direction in which the chain 68 extends (i.e., the left-right direction) is provided between 3-2, 64-1, and 64-2. The rail 69 has a cross-sectional shape as shown in FIG. 9 and can travel while engaging so that the traveling vehicle does not come off from the rail 69 during traveling, and a support standing upright on the upper surface 50 b of the filter plate 50. It is supported by the body 70. or,
At the center of the rail 69, a tensioner 73 for preventing the slack of the chain 68 is provided.

The filter plates 50 having such a structure are alternately arranged in the above-described arrangement direction with the filter plates 51 as shown in FIG. On the other hand, on the upper surface 1b of the front stand 1 and the upper surface 3b of the rear stand 3, a bogie 83 having rollers 83a, 83a running while being guided along the pair of guide rails 82 respectively extending in the left-right direction. , 8
3, one end of the rod-shaped member 81 is provided above the filter plates 50 and 51 and extends in the above-described arrangement direction. As shown in FIG. 6, a motor 84 for moving the bar-shaped member 81 in the left-right direction along the guide rail 82 is fixed to the right end of the upper surface 1 b of the front stand 1. A pulley or sprocket 85 is rotatably supported on the left end of the upper surface 1b. Motor 8
As a transmission member, between the pulley or sprocket attached to the output shaft of No. 4 and the pulley or sprocket 85,
For example, a metal wire or a chain 86 is wound around, and the metal wire 86 and the rod-shaped member 81 are fixed. Therefore,
The metal wire 86 moves in the left-right direction by the forward and reverse driving of the motor 84, and accordingly, the rod-shaped member 81 moves in the left-right direction along the guide rail 82. A pulley or a sprocket 85 is also rotatably supported on the right end and the left end of the upper surface 3b of the rear stand 3, and a metal wire 86 is wound around these pulleys or the sprocket 85 and the rod-shaped member 81 is fixed. You.

The traveling carriage 71a and the rod-shaped member 81 are arranged as follows. That is, the wheel 6 in which the chain 68 is wound around the sprocket 67 of the shaft 66
Since the string 15 on which the filter cloth 16 is hung is wound in the same direction on 3-1, 63-2, 64-1, and 64-2, the wheels 63-1, 63-2, and 63-3 are wound in the same direction. 64-1, 6
Both 4-2 are exerted by the weight of the filter cloth 16 and the like and the rotational force in the falling direction due to the winding of the filter cloth by the winding roller 20, as indicated by the arrow III in FIG. Therefore, the wheel 63-
1, 63-2, 64-1, and 64-2, a pulling force acts in the drop direction indicated by the arrow IV on the chain 68, so that the traveling vehicle 7 attached to the chain 68
1a is urged in the direction of the arrow IV. Therefore, the rod-shaped member 81 is moved by the traveling carriage 71 urged in the direction of arrow IV.
The contact roller 72 a is arranged so as to contact while pressing. Therefore, when the rod-shaped member 81 moves in the direction of the arrow IV in the left-right direction, the traveling carriage 71a pressing and abutting the rod-shaped member 81 also moves in the direction of the arrow IV, and accordingly, the chain 68 also moves in the direction of the arrow IV. , The wheels 63-1, 63-2, 64-1, and 64-2 indicate the arrow III.
, The filter cloth 16 is moved downward through the string-like body 15 toward the lower end position. Here, the lower end position means a position which is located below the upper end position and in which the stock solution supply port 5c of the filter plate 16 is not taken up by the take-up roller 20. Conversely, when the rod-shaped member 81 moves in the direction V indicated by the anti-pulling force acting direction opposite to the direction indicated by the arrow IV in the left-right direction, the traveling bogie 71a pressed against the rod-shaped member 81 and is in contact therewith. Is forcibly moved in the direction of the arrow V against the direction of action of the pulling force indicated by the arrow IV, and the chain 68 also moves in the direction of the arrow V.
3-1, 63-2, 64-1, and 64-2 rotate in the direction of arrow VI, and the filter cloth 16 is lifted via the string-like body 15 toward the upper end position where the filter cloth 16 is extended.

A pair of left and right support fittings attached to the lower surfaces of the filter frames of the filter plate 50 and the filter plate 51, respectively.
0, 20 and guide rollers 21, 21, 21
To support. Also, a cleaning pipe 22, a cleaning nozzle 23,.
3 is provided similarly to the conventional case. In this embodiment, the take-up rollers 20, 20 are connected to the take-up roller 2 by a take-up roller urging device 53 attached to one support fitting 52.
The winding force of the filter cloths 16 and 16 is applied to 0 and 20. In the present embodiment, the filter cloth 16 is
Although the type in which the winding roller 20 is provided is shown, the lower end of the filter cloth may be used as a free end without providing the winding roller 20, and the filter cloth may be simply hung in the direction of gravity. As shown in FIG. 5, the take-up roller 20 is provided with two filter cloths 16-1 and 16-2 covering the filter surfaces 50c and 50c provided on both sides of the filter plate 50, respectively, with each guide roller. 21 and then wrap them together to form two filter cloths 16-1 and 16-1.
The end of 6-2 is locked and fixed to the winding roller 20.

The operation of the filter press configured as described above will be described below. The operation of filtering the undiluted solution, the operation of opening each of the filter plates 50 and 51, and the operation of cleaning each of the filter cloths 16 after the opening of the frame are basically the same as those of the above-described conventional filter press, and a description thereof will be omitted. The operation of the winding / unwinding device will be mainly described. As shown by "B" in FIG.
6 is in a state of filtering the undiluted solution, and the filter cloth 16 is spread;
When at the upper end position B, all the traveling vehicles 71a and the rod members 81 are located at the left end position D indicated by "D" in FIG.
As described above, even in this state, the contact rollers 72,..., 72 of the traveling vehicles 71a,. Next, when the movable plate 7 is retracted to the position A in FIG. 5, the filter plates 50, 51 sequentially connected from the movable plate 7 side by the connection links 6,. Will be opened all at once with a certain interval. In this state, the motor 84 is driven to move the rod-shaped member 81 in the direction of the arrow IV via the metal wire 86, so that each filter plate 50 against which the roller 72 comes into contact with the rod-shaped member 81.
Each of the traveling vehicles 71a engaged with the rails 69 is also moved along the rails 69 in the direction of the arrow IV with the movement of the rod-shaped member 81, and the wheels 63-1, 63-2, 64-1, 64
-2 rotates in the direction of arrow III. Therefore wheel 63-
1, 63-2, 64-1, 64-2 are unwound, and each filter cloth 16 is moved downward toward the lower end position as shown in FIG. 16 is taken up by a take-up roller 20.

Next, when lifting the filter cloth 16 from the lower end position toward the upper end position, the rod 84 is moved in the direction of the arrow V via the metal wire 86 by driving the motor 84. Accordingly, the respective traveling carts 71a of the respective filter plates 50 against which the rollers 72 are in contact with the rod-shaped members 81 are forcibly moved in the direction of the arrow V with the movement of the rod-shaped members 81. Each of the attached chains 68 is also moved in the direction of arrow V, and the wheels 63-1, 63-2, 64-1, and 64-2 of each filter plate 50 are rotated in the direction of arrow VI. Therefore, the string 15 is wound around the wheels 63-1, 63-2, 64-1, and 64-2, and each filter cloth 16 is lifted.

The above description is for a filter press of the type in which all the filter plates 50 and 51 are opened simultaneously.
As shown in FIG. 7, the filter plate 50 is opened one by one, or as shown in FIG.
The winding and rewinding device described above can also be applied to a filter press of a type in which the frame is opened for each filter plate group composed of one. That is, the filter press shown in FIG.
A recess 100 is provided in each of the handles 50a, 51a of 0, 51,
On the other hand, the side beam 4 is provided with a frame opening device 102 having a claw member 101 capable of moving along the direction in which the side beam 4 extends and the amount of movement thereof being controllable. ing. In such a filter press, the movable plate 7 is moved in the direction of opening the frame, and the frame opening device 1 is placed in the concave portion 100 of the filter plate 50 or the filter plate 51 to be opened.
The desired filter plate can be opened by engaging the claw member 101 of No. 02 and moving the frame opening device 102.

In the filter press shown in FIG. 8, for example, four filter plates 50 and 51 are formed as one group, and a first group to a sixth group are provided as shown in FIG. The filter plates 50 and 51 included in each group are connected by a link 6 so that the filter plates 50 and 51 included in the group can be opened.
The frame of the filter plates 50 and 51 in each group is opened by the claw member 101 of the frame opening device 102 in the concave portion 100 of the rearmost filter plate 50 or 51 in each group, as in the case of the filter press shown in FIG. Are engaged and the frame opening device 102 is moved, so that the filter plates 50 and 51 provided in the group to be opened are sequentially opened.

The operation of the winding and rewinding device when opening a part of the filter plates as shown in FIGS. 7 and 8 is as follows. In order to move the filter cloth 16 down to the lower end position when the frame is opened, the rod member 81 is moved in the arrow IV direction by the motor 84 in the same manner as described above. The filter cloth 16 of the filter plate opened by this operation is moved downward as described above, but the upper part of the filter cloth 16 which is not opened and is still sandwiched between the filter plates is not pinched. The part moves down slightly due to the weight of the filter cloth hanging bar 17 and the weight of the filter cloth, but does not move down any more. Therefore, since the wheels 63-1, 63-2, 64-1, and 64-2 of the filter plate 50 that have not been opened do not rotate in the direction of arrow III thereafter, the chain 68 and the traveling vehicle 71a move in the direction of arrow IV. Never move to
Therefore, thereafter, the contact roller 72 of the traveling vehicle 71a that is not open and the rod-shaped member 81 are separated, and only the rod-shaped member 81 moves in the direction of arrow IV. As shown in FIG. 10, the contact roller 72 of the traveling carriage 71 a of the filter cloth 16 of the opened filter plate moves in the arrow IV direction together with the rod-shaped member 81 while being pressed against the rod-shaped member 81. . On the other hand, when the filter cloth 16 is lifted to the upper end position, the rod-shaped member 81 is moved in the direction of the arrow V, so that the traveling cart 71a of the filter cloth 16 that is not open also returns the contact roller 72 from the separated position. And the rod-shaped member 81 come into contact with each other, and then the rod-shaped member 81 forcibly moves all the traveling vehicles 71a to the position D.

As described above, in a filter press of the type in which only a part of the filter plates is opened, the filter cloth 16 is not opened, that is, the filter cloth 16 does not fall to the lower end position.
About the wheels 63-1, 63-2, 64-1,
Since the string 15 wound around 64-2 is not forcibly rewound unlike a conventional filter press,
There is no possibility that a problem will occur when the cord 15 is wound up again.

As described above, in the filter press according to the present embodiment, the drive shaft of the conventional filter press is not employed, and the traveling carriage 71 provided on the filter plate 50 side is used.
Since the contact roller 72 a and the rod-shaped member 81 are merely in contact with each other, high precision is not required when the traveling carriage 71a and the rod-shaped member 81 are installed. Due to such a simple structure, the production becomes easy and the production cost can be reduced. Furthermore, since the one that moves the traveling carriage 71a is a single rod-shaped member, the weight can be reduced. The left and right wheels 63-1, 63-2, 64-
The rotation of the wheels 63-1, 63-2, 64-1, and 64-2 can be easily synchronized because the wheels 1 and 64-2 are connected by the chain 68.

In the above-described embodiment, the rod-shaped member 81 is driven by using the motor 84 and, for example, a metal wire 86. However, the present invention is not limited to this. Any mode can be used as long as the apparatus can move in the V and IV directions, for example, an apparatus using a ball screw.

Although not specifically illustrated in the above-described embodiment, various kinds of techniques such as providing a knife for peeling off the filter residue on the filter cloth, or providing a cleaning nozzle on the back side of the filter cloth, etc. It goes without saying that changes and applications can be made within the scope of the technical idea of the present invention.

In the above embodiment, the wheel 63-
Filter plate 50 provided with 1, 63-2, 64-1, 64-2, etc.
, But are not limited to this. For example, in a filter press of a type in which one filter cloth is arranged between each filter plate, a wheel 63 is provided on all filter plates.
-1, 64-1.

In the above-described embodiment, the vertical movement of the filter cloth 16 is performed by moving the rod member 81 in the left-right direction. However, the lower movement of the filter cloth 16 is performed by the rod member 81 and the traveling carriage 71a. By releasing the contact of the filter cloth 16, the filter cloth 16 can be freely dropped, and the rod-shaped member 81 can be used only when the filter cloth 16 is moved upward.

[0027]

As described above in detail, according to the present invention, there is no need to provide a drive shaft that fits on a take-up pulley that winds a string-like body hanging a filter cloth. Further, by providing the connecting member, the rotation of the right and left wheels can be easily synchronized. Further, since the connecting member is moved to rotate the wheel, it is possible to eliminate the difficulty in manufacturing in which the drive shaft is fitted to the winding pulley as in the related art, thereby facilitating the manufacturing.

[Brief description of the drawings]

FIG. 1 is a view showing a filter plate in a filter press according to an embodiment of the present invention, in which a filter cloth is stretched, and is a view as seen from a II section shown in FIG.

FIG. 2 is a view showing the filter plate shown in FIG. 1, in which a filter cloth is moved downward toward a lower end position.

FIG. 3 is an enlarged view of a portion including a wheel, a support member, and the like shown in FIG.

FIG. 4 is a view as seen from a II-II portion shown in FIG. 1;

FIG. 5 is a front view of a filter press according to one embodiment of the present invention.

6 is a top view of FIG.

FIG. 7 is a front view of a filter press according to another embodiment of the present invention.

FIG. 8 is a front view of a filter press according to another embodiment of the present invention.

FIG. 9 is a sectional view of the rail shown in FIG. 1;

FIG. 10 is a view showing a state in which the traveling cart and the rod-shaped member are separated when only a part of the filter plates is opened in the filter press shown in FIG. 7 or FIG.

FIG. 11 is a front view showing a conventional filter press.

FIG. 12 is a view showing a filter plate and the like shown in FIG. 11;

[Explanation of symbols]

15 ... string-like body, 16 ... filter cloth, 20 ... take-up roller, 50,
51 ... Filter plate, 63-1, 63-2, 64-1, 64-2
... Wheel, 68 ... Chain, 71 ... Connecting member moving member, 71a ... Truck, 72 ... Contact roller, 81 ... Bar-shaped member, 82 ... Guide rail, 84 ... Motor, 86 ... Metal wire, 102 ... Frame opening device.

Claims (5)

(57) [Claims] 1. A filter press in which a plurality of filter plates (50, 51) are arranged between a front stand (1) and a rear stand (3), wherein the filter is connected to both left and right ends of an upper end of a filter cloth. The filter press is provided with a winding and rewinding device for winding and rewinding each of the cords (15) for hanging the cloth, and the upper end position where the filter cloth (16) is extended and the lower position from the upper end position. The filter cloth is supported so as to move up and down between the adjacent filter plates between the lower end position, and after opening the filter plate, the above-mentioned cord-like body is rewound by the above-mentioned winding and rewinding device to move the filter cloth up and down. In the filter press, the winding and rewinding device is disposed at the left and right positions of the filter plate in the left and right direction orthogonal to the arrangement direction in which the filter plates are arranged, and winds each of the cords in the same direction. The wheel (63-1) on which the rotational force in the falling direction of the cloth acts via the string-like body. 63-2,64
-1, 64-2), which is arranged on the upper part of the filter plate and is hung around the rotational force acting member (67) of the left and right wheels to connect the left and right wheels rotatably in the same direction. Member (68)
And a connecting member moving member (7
1a), the moving member for the connecting member is extended by the falling direction rotational force of the wheel and extending in the arrangement direction above all the filter plates, and the moving member for the connecting member is pressed by the pulling direction tensile force acting on the connecting member by the falling direction rotational force of the wheel. Rod-shaped member (81) that abuts while being pressed
And a rod-shaped member moving device (82, 83, 84) for moving the rod-shaped member in the left-right direction. When the filter cloth is moved upward to the upper end position, the pulling force in the drop direction is reduced by the connecting member. The bar-shaped member is moved by the bar-shaped member moving device in a direction opposite to the direction in which the bar-shaped member acts on the bar-shaped member via a moving member, thereby forcibly moving the connecting member moving member. And filter press. 2. When the filter cloth is moved down to the lower end position, the rod-like member moving device moves the rod-like member in a direction in which the pulling force acts in the drop direction, so that the connection can be separated from the rod-like member. The filter press according to claim 1, wherein the member moving member is moved. 3. A traveling carriage (83) attached to both ends of the rod-shaped member.
A rail (82) that guides the traveling vehicle and extends in the left-right direction, a drive source (84) for moving the rod-shaped member, the rod-shaped member or the traveling vehicle, and the driving source. The filter press according to claim 1, further comprising: a transmission member attached between the transmission member and the transmission member for transmitting a driving force generated by a driving source to the rod-shaped member or the traveling vehicle. 4. A filter cloth take-up roller (20), which is rotatably supported on a lower side of the filter plate and winds the filter cloth moving downward toward the lower end, and urges the filter cloth in a direction in which the filter cloth is wound. The filter press according to claim 1. 5. The filter press according to claim 1, further comprising a frame opening device (102) for opening the frame only on an arbitrary filter plate among the arrayed filter plates.