JPH02149304A - Filter press - Google Patents

Abstract

PURPOSE:To surely peel cake from a pair of filter cloths which is closely stuck to the interval of a pair of filter cloths arranged between the adjacent filter plates by making the unwinding velocity of a pair of filter cloths mutually different at a time for unwinding the filter cloths in a filter cloth unwinding device. CONSTITUTION:A pair of filter cloths 16, 16 are arranged between the adjacent filter plates 5, 5 and a filter cloth winding device 31 for hanging and supporting a pair of filter cloths 16, 16 are arranged to the upper part of the filter plates 5. Furthermore a filter cloth unwinding device 32 for unwinding a pair of filter cloths 16, 16 to the lower part is arranged to the lower part of the filter plates 5. A pair of filter cloths 16, 16 are unwound to the lower part of the filter plates by the unwinding device 32 and on the other hand, a pair of filter cloths 16, 16 are wound up to the prescribed position between the adjacent filter plates 5, 5 by the winding device 31. In the unwinding device 32, at a tine for unwinding the filter cloths, the unwinding velocity of a pair of filter cloths 16, 16 is made mutually different. As a result, cake closely stuck between the filter cloths 16, 16 can be surely peeled therefrom.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a filter press that has a pair of filter cloths between adjacent filter plates and that winds up or unwinds the filter cloths.

Traditionally, a pair of filter cloths suspended and supported from a drive shaft placed above the filter plates are sandwiched between adjacent filter plates, and when the frame is closed, the filter plates are tightened to remove the adjacent filters. Filtration is performed by supplying the stock solution between a pair of filter cloths between the plates, and when the frame is opened, the filter plates are opened and the cake between the filter cloths is discharged, and the pair of filter cloths are rotated by the drive shaft. There is a device in which the filter cloth is rewound by a filter cloth rewinding device located below the lowered filter plate (Japanese Patent Publication No. 55-37928).

However, in No. 6 of the above structure, when the pair of filter cloths are lowered by the rotation of the starting drive shaft, the pair of filter cloths are lowered at the same time and at the same speed. If the cake is stuck between the filter cloths, there is a problem that it is difficult to separate the cake from each filter cloth.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a filter press capable of reliably separating cake stuck between a pair of filter cloths from the filter cloths, in order to solve the above-mentioned problems.

1+B for Solving the Problems In order to achieve the above object, the present invention makes the unwinding speeds of the pair of filter cloths different from each other when unwinding the pair of filter cloths between adjacent filter plates. In this way, the cake stuck between both filter cloths is forcibly peeled off from the filter cloths.

That is, a pair of filter cloths is arranged between adjacent filter plates, a filter cloth winding device for suspending and supporting the pair of filter cloths is arranged above the filter plates, and A filter cloth rewinding device is disposed below the filter plate without rewinding the filter cloths downward, and the pair of filter cloths are rewinded below the filter plate by the cloth rewinding device.
- On the other hand, in a filter press in which the pair of filter cloths are wound up to a predetermined position between the adjacent corrugated plates by the filter cloth winding device, the filter cloth unwinding device is configured to:
- The unwinding speeds of the pair of filter cloths are configured to be different from each other.

In the above configuration, the source cloth rewinding device includes a pair of filter cloth rewinding shafts each having a pair of filter cloth rewinding shafts connected to each other at their lower ends and having different filter cloth rewinding shaft diameters. ,
The pair of filter cloths may be unwound by rotating both filter cloth unwinding shafts in the filter cloth unwinding direction.

In the above configuration, the filter cloth winding device may be configured to integrally and simultaneously wind up the pair of filter cloths to the predetermined position when winding up the filter cloths.

can.

In addition, in the above configuration, the "Niki filter cloth winding device" includes a filter cloth positioning drive pulley and a pair of filter cloth winding drive pulleys having different diameters, and a device for rotating these drive pulleys. The diameter cutting method of the drive pulley for positioning the source cloth is the largest among the drive pulleys, and the drive pulley for positioning the filter cloth has a pair of filters between the adjacent filter plates. The upper portions of the cloths are connected to each other via a string-like member, and both filter cloths are wound up simultaneously. Among the pair of filter cloth winding upper phase drive pulleys, the drive pulley with the larger diameter τ has a diameter between the adjacent filter plates. (1) Of the pair of filter cloths, the filter cloth unwinding shaft has a larger diameter in the old method.
Of the pair of drive pulleys for winding up filter cloth, the smaller drive pulley for the diameter-cutting method has a smaller drive pulley for winding the filter cloth between the adjacent filter plates. It is also possible to configure the upper part of the other connected filter cloth to be connected via a string-like member.

You can also do that.

In the above configuration, each of the filter plates is constituted by a frame having a space therein that extends through the filter plate in the thickness direction, and the pair of filter cloths sandwiching each of the filter plates is formed by each frame of each filter plate. are arranged on both sides in the thickness direction of the frame to surround the space formed inside the frame, and the winding and unwinding operations of the filter cloths are performed outside of the filter plates. You can also do it.

In the above configuration, each of the pair of filter cloths between the adjacent filter plates is provided with a stock solution supply port, and a through hole communicating with the stock solution supply 1 is provided at the periphery of the stock solution supply 1. When the filter plates are tightened, the stock solution supply IZ'l of each of the filter cloths and the through holes of each of the stock solution supply plates form a communication tube for stock solution supply, and the The above-mentioned stock solution supply plates facing each other between a pair of filter cloths have protrusions on each surface, and when the filter plates are tightened, the protrusions come into contact with the opposing stock solution supply plates, and the above-mentioned communication pipe is connected between both liquid supply plates. It is also possible to form a gap that communicates with the two.

Furthermore, in the above configuration, each of the filter plates includes a filter bed and a frame surrounding the filter bed, and the pair of filter cloths sandwiching the source plate are arranged in the thickness direction of each frame of each filter plate. It can also be configured to be placed on both sides, respectively, to sandwich the origin weekend.

Effects and Effects of the Invention In the above configuration, after the filtering work is performed by tightening the plurality of filter plates, the filter plates are opened and the cake held between the pair of filter cloths between adjacent filter plates is discharged. , the pair of filter cloths between adjacent filter plates are unloaded by the drive of the original cloth rewinding device. At this time, by adjusting the unwinding speed of the pair of filter cloths to be the same as each other, the cake stuck between the pair of filter cloths can be forcibly peeled off from each filter cloth, making it easier to discharge the cake. can be directed. Further, in the filter cloth rewinding device, if the pair of filter cloths are configured so as not to be unwinded by filter cloth rewinding shafts having different shaft diameters, the unwinding speeds of the pair of filter cloths can be set to be different from each other with a simple structure. can be set.

Furthermore, when winding up a pair of filter cloths in a dual-source cloth winding device, if both filter cloths are wound up at the same time,
The pair of filter cloths can be reliably positioned at the same time between adjacent filter plates, making positioning the filter cloths easy!
It becomes something b. Therefore, for example, the positions of the stock solution supply ports of each filter cloth can be easily matched, and the stock solution can be stably supplied into the filter chamber between each pair of filter cloths.

In addition, if the filter cloth with a faster filter cloth unwinding speed is connected to the drive pulley for positioning the cloth, which has a large winding and unwinding amount in the original cloth winding device, it is possible to unwind the filter cloth. During operation, the amount of unwinding of the filter cloth with respect to the filter cloth winding device increases, the filter cloth is smoothly unwound onto the filter cloth unwinding shaft, and overload can be effectively prevented from being applied to the filter cloth.

χ1Carp Hereinafter, embodiments of the present invention will be described in detail based on FIGS. 1 to 5.

As shown in FIG. 1, the filter press according to this embodiment has a front stand l supporting a main plate 2 and a rear stand 3.
Side beams 4.4 are installed between both sides of the stands 1.3, and a large number of filter plates 5.4 are installed between both the stands 1.3. ..., 5 are arranged, a pair of filter cloths 16.16 are suspended and supported between each adjacent filter plate 5.5, and a pair of saw handles 5r are installed on both sides of each filter plate 5. 5 f is slidably placed on the Zyde beams 4, 4 so as to be movable in the front and back directions, and the movable plate 7 is driven back and forth by the drive piston 8 supported on the rear stand 3. As shown by the solid line in FIG. 1, the filter plate 5. ..., the tightening of 5 is the operation or the first
As shown in phantom lines in the figure, filter plate 5. . . , 5 at predetermined intervals. In this filter press, the filter plate 5. . . , 5 is connected to the upper part of each pair of filter cloths 16, +6, and has both filter cloths 1
6 and 16" - along with the arrangement of the device 31, the filter plate 5. . , 5 is connected to the lower part of each pair of filter cloths 16j 6, and both filter cloths 16. IO
A filter cloth rewinding device 32 is disposed to unwind the filter cloth 16 downward. , 16 are wound back below the filter plates, while each filter cloth 16 is wound up to a predetermined position between the adjacent filter plates 5, 5 by the filter cloth winding device 31.

As shown in FIGS. 2 and 3, the filter plate 5 includes a frame 5a having a space 5b therein which extends through the filter plate in the thickness direction, and a frame 5a arranged on both sides of the frame 5a in the thickness direction. The filter cloth 1 (3, 16) surrounding the inner space 5b is generally constructed, and a pair of filter cloths 16.16 is sandwiched between the adjacent frames 5a, 5c, and the filter cloth 16.16 is sandwiched between the filter cloths 16.16. Filtration is performed by pressurizing the stock solution into the filter cloth 33, and while the cake is held in the filter cloth 33 between the filter cloths 1616, the filtrate is passed through each filter cloth 16.+6 to each frame 5a.
The filtrate is collected in the inner space 5b, and the filtrate is guided to the lower part of the frame 5a and collected.

The frame body 5a is a member whose horizontal cross section and vertical cross section are approximately pentagonal in shape, and has inclined surfaces 5c, 5c on the inner surface thereof, which are inclined from the center in the thickness direction to both sides, respectively. At one end of the side surface of each frame 5a, there is a handle 5f,
5 r is provided, and the front and rear stands of the filter press 1
．． The handles 5r and 5f are slidably mounted on the side beams 4 and 4 installed on the sides of the frame 5a, respectively, to suspend and support the frame 5a, and guide the back and forth movement of each frame 5a. do. At each lower part of the side surface of the frame 5a, a filtrate collection port 5d penetrating in the fishing direction is formed, and at each corner of the lower part of the frame 5a, a space 5b formed inside the frame 5a is formed. A communication hole 5o communicating with the filtrate recovery port 5c is formed.

Each of the filter cloths 16 is formed by appropriately selecting from various conventionally known materials, and a filter cloth hanging rod 18 is fixed to the upper end of each filter cloth 16. While connected to the filter cloth winding device 31, the lower end of each filter cloth 16 is locked to the filter cloth rewinding device 32. Each of the filter cloths 16 is arranged at the front and rear of the frame 5a of the filter plate 5, and covers both sides of the frame 5a in the thickness direction (both sides in the front and back direction of the filter press).
sandwich the space 5b formed inside a. A circular stock solution supply port 16a is formed at a position slightly above the center of the frame body 5a of each filter cloth 16, and an annular stock solution supply plate 34 is fixed to the periphery of the stock solution supply port 16a. do. As shown in FIG. 4.5, this stock solution supply plate 34 is connected to a pair of filter cloths 16. +6, the other filter cloth 16 facing the filter cloth 16 to which the stock solution supply plate 34 is attached has a cylindrical protrusion 34 on its surface. It is generally composed of a top plate 34a having a large number of filters b, and a back plate 34c which sandwiches the filter cloth 16 and fixes the top plate 34-a to the filter cloth 16. Both plates 34
A and 34c are provided with through holes 34d and 34e, respectively, and communicate with the stock solution supply port 16a of the filter cloth 16 to form a communication pipe for stock solution supply.

On the other hand, the filter cloth hoisting device 31 has left and right pairs of hoisting shafts 9.9 each having a polygonal cross section supported between the upper sides of the front stand l and the rear stand 3, respectively. The polygonal cylinder part side 20 is fitted between the filter plates so as to be slidable in the axial direction, and three first . Second. While fixing the third drive wheel 21, 22, 23, one end of each hoisting shaft 9 is connected to the bevel gear transmission mechanism 1.
The motor 13 is connected to the motor 13 with a speed reducer via the
The hoisting shaft 9.9 is synchronously rotated in forward and reverse directions by forward and reverse driving. The cylindrical part shrine 20 is connected to the cylindrical part sides 20 adjacent to each other along the axial direction by a connecting link 6, and the cylindrical part VI' 2 adjacent to the movable plate 7.
0 is a connecting link 6 between the support part I17a of the movable plate 7.
are connected. The axial length of the cylindrical member 20 is such that when each filter plate 5 is tightened, the first driving pulley 21 is positioned above between the adjacent filter plates 5.5. ”-Of the foot drive pulleys 2+ and 22.23, the drive pulley 21 with the largest diameter dimension, that is, the first drive pulley for filter cloth positioning.
A first wire 24 serving as a string-like portion whose lower end is locked to a connecting rod 35 is wound around the drive pulley 21 .

This connecting rod 35 is connected via a pair of auxiliary wires 36.36 to filter cloth hanging rods 18.18 at the upper ends of a pair of filter cloths 1616 between the adjacent filter plates 5.5.

Of the remaining drive pulleys 22 and 23, the second drive pulley 22 of the diameter 71 method has a larger diameter than the number 2 on the left in FIG. of"
The second wire 25, which is a string-like part whose lower end is fixed, is wound around the filter cloth hanging rod 18 at one end.The remaining drive pulley 2
3. That is, in FIG. 2, the third drive pulley 23 with the smallest diameter on the right side has a filter cloth hanging rod 18 at the upper end of the right filter cloth 16 of the pair of filter cloths 16.16. A third wire 26 serving as a string-like portion having a fixed lower end is wound around it.

Further, the filter cloth rewinding device 32 is configured as follows. That is, a pair of left and right inverted-shaped fittings 19 and 19 are installed on the bottom surface of the frame 5a of each filter plate 5.
．． 19, a first IT cloth rewinding roller 27 and a second FF cloth rewinding roller 28, which serve as filter cloth rewinding shafts, are rotatably arranged. The filter cloth unwinding diameter dimension (outer diameter dimension) of the 1a cloth unwinding roller 27 is larger than the filter cloth unwinding diameter dimension (outer diameter dimension) of the 2a cloth unwinding roller 28, and this first filter cloth unwinding "J
- The filter 27 includes a pair of filter cloths 16 between the adjacent filter plates 5.5.
16, the lower end of the filter cloth 16 on the left side in FIG. 2 is locked 4'
Ru. Now, lock the lower end of the filter cloth 16 on the right side in FIG. 2 of 6.16 to the second filter cloth winding door [7-ra 28 (J1 above pair of filter cloths). One of the fittings 19 on the sides of the second filter cloth rewinding rollers 27 and 28 has a third
As shown in the figure, the filter cloth rewinding spring device 30, which includes a built-in spring that always urges both rollers 27 and 28 in the rewinding direction, is removed. The above pair of fixtures 1
9. Between 19 and the above two filter cloth rewinding rollers 27 and 28
In between, there are a number of upward and bifurcated cleaning nozzles 434.
3, and the cleaning pipe 4
A wash water avoidance plate 29 is provided below 2 to prevent wash water from falling on the first filter cloth rewinding roller 27 below the wash pipe 42 during washing. The cleaning pipe 42 connects the cleaning nozzle 43. . . , a pair of filter cloths 16.16 between adjacent filter plates 5.5 facing 43 are cleaned.

The above configuration operates as follows.

That is, a large number of the filter plates 5. . . , 5 are moved between the front and rear stands 1.3 of the filter press by moving the movable plate 7 forward. ..., tighten 5 to the front stand side. At this time, since each support member 7a on the upper part of the movable plate 7 is fitted to each of the winding shafts 9 so as to be slidable in the axial direction, each of the support parts 7a corresponds to the space between the adjacent filter plates. Cylindrical member 20 arranged on each winding shaft 9.・
, 20 are also moved along the axial direction toward the front stand together with the filter plate 55.

The above filter plate 5.・When , 5 is tightened, each filter cloth 16
The protrusions 34b of the stock solution supply plate 34 are arranged so that the protrusions 34b abut each other along the thickness direction of the filter plate, and the protrusions 34 abut against each other between the top plates 34a of the stock solution supply plate 34.
A gap is formed between b and 34b, and each filter cloth 16
The stock solution supply [ko 16a and the through hole 34 of each stock solution supply plate 34]
d and 34e communicate with each other to form a feed field communication pipe (4), which also communicates with each of the above-mentioned gaps. Specifically, the pipe is press-fitted through the gap described above into the chambers 33 formed between the pair of filter cloths 16 and 16 between each adjacent filter plate 5.5, and the stock solution is filtered by each filter cloth 16. The cake is separated into a cake and a filtrate.The cake is retained in the chambers 33 between the pair of filter cloths 16, 16, while the filtrate passes through each filter cloth 16 and enters the inside of the frame 5a. 16. The filtrate is guided to the lower part of the frame 5a by flowing down under the guidance of 16 or by falling within the frame 5a, and flows into the filtrate recovery port 5d from the communication hole 5e of the frame 5a. and collected.

When discharging the cake, the movable plate 7 retreats, and each cylindrical member 2 connected to each support member 7a via a communication link 6
0 retreats along each winding axis 9. At this time, the filter plate 5 connected to the movable plate 7 by a connecting link (not shown) also begins to move backward. All the filter plates 5.・、5
When the frame is opened, a pair of filter cloths 16.5 between adjacent filter plates 5.5.
A large cake held between 16 pieces will fall due to its own weight.

Then, the motor 13 is driven to synchronously rotate the hoisting shaft 9.9, rotate each drive pulley 21, 22.23, and loosen each wire 24, 25, 26.

Then, a pair of filter cloths 16. + 6 is filter cloth rewinding roller 27
．． Since each filter cloth 16 is constantly urged in the unwinding direction by 28, each filter cloth 16 begins to descend. At this time, since the first filter cloth rewinding roller 27 and the second filter cloth rewinding roller 28 have different unwinding diameters, the pair of filter cloths 16.16 between the adjacent filter plates 5.5 simultaneously move at the same speed. Rather than descending;
A pair of filter cloths 16 between adjacent filter plates in FIG. The left filter cloth 16 of +6 is lowered and rewound faster than the right filter cloth 16. Therefore, the cake that was in close contact between the pair of filter cloths 16, 16 is forcibly peeled off from each filter cloth 16 and falls downward under its own weight. During this filter cloth rewinding operation, since the second driving pulley 22 has a larger diameter than the third driving pulley 23, the amount of unwinding of the wire 25 is greater than the amount of unwinding of the wire 26 that the third driving pulley 23 rewinds. is large, and each of the filter cloths 16 on the left side can be rewound easily. At this time, the first drive pulley 21 has a larger diameter than the second drive pulley 22, and the wire 24
Since the amount of unwinding is also large, the unwinding operation of the filter cloth 16, 16 is not obstructed. When each filter cloth 16 is rewound by each filter cloth rewinding roller 27, 28 and rewound to such an extent that each stock solution supply plate 34 contacts each roller 27, 28,
As shown between the leftmost adjacent filter plates in FIG. 2, the filter cloth hanging rod 18 of the right filter cloth 16 of the pair of filter cloths 16. The connecting rod 36 is located in the upper position, and the connecting rod 36 is located in the middle of the filter cloth hanging rods 18 degrees 18. In this state, the driving of the motor 13 is stopped. In addition, if necessary, the cleaning pipe 42
The filter cloths 16 and 16 are washed by the washing nozzles 43° . . . , 43 .

Next, when positioning each filter cloth 16 at a predetermined position between adjacent filter plates, the motor 133 is reversely driven, contrary to the above,
Rotate the hoisting shaft 9.9 in the opposite direction. Then, each drive pulley 21, 22, 23 rotates in the opposite direction, and each wire 24
, 25.26.

At this time, since the diameter of the first drive pulley 21 is larger than that of the other drive pulleys 22 and 23, the amount of winding of the wire 24 is large, and the connecting rod 35 connected to this wire 24 is connected to the other filter cloth hangers. It is pulled upward faster than bar 18.18. Therefore, both filter cloth hanging rods 18.18 are raised together with the connecting rod 35 via the auxiliary wire 3636, and the pair of filter cloths 1616 are simultaneously raised, and the motor 13 is stopped by the operation of the limit switch, and both filter cloth hanging rods 18. A filter cloth 1616 is placed in position between adjacent filter plates 5.5.

As the connecting rod 35 rises, the filter cloth hanging rod 18.
1, the other wires 25, 26 are in a slack state, but when the filter cloth 16, 16 is finally located at the predetermined position, the second adjacent plate A from the right in FIG. 5.
As shown between 5 and 5, both filter cloth hanging rods 18.18 are located at the same position along the vertical direction, and the filter cloth hanging rods 18.18
The wires 25 and 26 that are locked to the wires 25 and 26 are also in a state where there is no slack. This is because, in the filter cloth unwinding state, the left filter cloth hanging rod 18 of the pair of filter cloth hanging rods 18.18 was located lower than the right filter cloth hanging rod 18, but the second filter cloth hanging rod 18. Based on the diameter dimensions of the three drive pulleys 22 and 23, the winding amount of the left filter cloth 16 is larger than that of the right filter cloth 16, so in the end,
This is because there is no difference when unwinding the original cloth and the two are located at the same position.

Thereafter, the movable plate 7 moves the filter plate 5. ．． Perform the tightening described in step 5 and perform the next filtration work.

According to the above embodiment, the following effects can be obtained.

That is, a plurality of filter plates 5. ..., after tightening the filter plate 5 and performing the filtration work. When opening the frame 5 and discharging the cake, a pair of filter cloths 16.5 are inserted between adjacent Iig plates 5.5.
16 is lowered by driving the filter cloth rewinding device 32.

At this time, since the unwinding speeds of the pair of filter cloths 1616 are made to be different from each other, even if the cake sticks tightly between the pair of filter cloths 16.16 and is difficult to peel off from the filter cloths 16.16, By unwinding the pair of filter cloths 16.16 at different speeds, the cake can be forcibly peeled off from the filter cloths 16.16, and the tendency of the cake to stick can be improved. In addition, in the original cloth rewinding device 32, the unwinding diameter dimensions of the filter cloth rewinding rollers 2728 are configured to be different, so that the unwinding speeds of the pair of filter cloths 16 and 16 can be made different from each other with a simple structure. be able to.

Further, in the filter cloth winding device 31, a pair of filter cloths 16
．． When winding up the filter cloths 16, both the filter cloths 16, 16 are wound at the same time by the rotational drive of the first drive pulley 21, so that the pair of filter cloths 16 are wound between the adjacent filter plates 5.5.
．． +6 can be reliably positioned at a predetermined position (upright and at the same time), which simplifies the positioning work of the filter cloths 16, 16. That is, if the filter cloths 16, 16 are positioned at the same time, the second and third drive pulleys are The filter cloth 16 is moved by the drive pulleys 22 and 32, respectively.
16, the positions at which the pair of filter cloths 1616 are wound up are different between adjacent filter plates 5, 5 due to elongation of the filter cloths 16.16, etc., and the positioning of both filter cloths 16.16 is adjusted. The work becomes extremely complicated. On the other hand, both filter cloths 16.1 are connected to the first driving pulley 2I.
6 at the same time, the above problem will not occur. Therefore, the positions of the stock solution supply ports 16a of each filter cloth I6 can be easily matched, and the stock solution can be stably supplied to the various chambers 33 between each pair of filter cloths 16 and 16.

Note that when the filter cloth 16.16 is unwinded, the unwinding claw of the I wheel 24 of the first driving pulley 21 is connected to the other wire 25.
Since the amount of unwinding of filter cloth 16 is always larger than that of filter cloth 16.
This does not adversely affect the rewinding operation of 16.

In addition, the filter cloth 16 which has a higher filter cloth unwinding speed and the first filter cloth which has a larger winding and unwinding amount in the filter cloth winding device 31
Since the wire 2 is connected to the drive pulley 21, the wire 2 unwound from the first drive pulley 21 during the filter cloth rewinding operation is connected to the drive pulley 21.
4 becomes large, and the filter cloth 16 smoothly returns to the first position.
The filter cloth 16 is rewound by the filter cloth rewinding roller 27, thereby effectively preventing overload from being applied to the filter cloth 16.

Further, each drive pulley 21, 22, 23 is attached to the cylinder member 20.
4 tH, the cylindrical portion 20 moves together with the filter plate 55, so that the filter plate 5. ．． During the opening/closing operation of 5, the pulleys 21, 22, 23 can easily follow each filter plate 5 as U' filter, preventing overload on wires 2/1, 25, 26 and filter cloths 16, 16. does not work.

In addition, in the filter cloth winding device 31 described in -G, the drive pulley 2
I made the diameter dimensions of 1, 22, and 23 different, so
With a simple structure, the amount of winding and unwinding of the pair of filter cloths 16, 16 can be reliably made different from each other.

It should be noted that the present invention is limited to the embodiments of the
Instead, it can be implemented by various other @-sama.

For example, the "origin plate 5" refers to one without a filter bed within the frame body 5a. Even if the filter press is a filter press having a filter plate with a filter bed integrally formed within the frame body 5a, the present invention can be applied.

In addition, in addition to the pair of winding shafts 9, 9, the source cloth winding device 31 is provided with a pair of second winding shafts, and the first drive pulleys 21, 21 are connected to the second winding shafts. At the same time, the winding shafts 9, 9 are fitted with each other with a diameter Tj as described above.
Drive pulleys 2223 of different methods may be fitted. In this case, by making the drive speeds of the winding shaft 9°9 and the second winding shaft different, the pair of filter cloths 16.16 are simultaneously wound up, while the amount of unwinding of the pair of filter cloths 16.16 is adjusted. It is also possible to rewind with different values. Furthermore, in this modification, the driving pulleys 22 and 23 are provided on separate hoisting shafts, and the diameter dimensions of the driving pulleys are all the same,
It is also possible to achieve the same effect as in the above embodiment by varying the rotational speed of the winding shaft.

You can also do that.

Further, in the filter cloth rewinding device 32, each of the filter cloth rewinding rollers 27, 28 always operates the filter cloth 16. Instead of rotationally biasing the +6 in the rewinding direction, the filter cloth 16, 16 may be driven to rewind during rewinding to perform the rewinding operation of the filter cloths 16 and 16. Further, instead of making the unwinding diameter dimensions of the filter cloth rewinding rollers 27 and 28 the same, the rotational driving force of both rollers 27 and 28 is made different from each other, so that the filter cloth 16. +6 different rewinding speeds may be generated.

In addition, the stock solution supply port +6a of each filter cloth 16 and the stock solution supply plate 3
4 may be placed at any location on the filtration surface inside the frame, and the upper or lower center portion of the frame 5a may be curved upward or downward in a U-shape to protrude. The stock solution supply unit 16a and the stock solution supply plate 34 may be provided inside the protrusion of the frame 5a. In addition, the frame body 5
The shape of a is not limited to a square shape, but may be any shape such as a circle.

[Brief explanation of the drawing]

Fig. 1 is a side view of a filter press according to an embodiment of the present invention, Figs. Figure 5 is a front view of the stock solution supply plate attached to the filter cloth of the filter press, and a sectional view taken along the line ■--■ in Figure 4, respectively. 1.3...front, rear stand, 2...main board, 4.
・Zydebeam, shank...Filter plate, 5a Frame body, 5b・Space, 5c...Slanted surface, 5d...Filtrate collection port, 5f・Handle, 6・Connection link, 7...Movable plate, 9... Winding shaft, 1
3... Motor, 14... Bevel gear transmission mechanism, +6... Filter cloth, 16a... Stock solution supply port, 18... Filter cloth hanging rod, 1
9... Mounting tool, 20... Cylindrical member, 2+, 22.23
...First. 2nd ° 3rd drive pulley, 24.25.26.
...First. Second. Third wire, 27.28... Second filter cloth rewinding roller, 29... Washing water avoidance plate, 30...
Spring device for unwinding filter cloth, 31...filter cloth winding device, 32
... Filter cloth rewinding device, 33 ... Various chambers, 34 ... Stock solution supply plate, 34b ... Protrusion, 34d, 34e ... Through hole, 35 ... Connecting rod, 36 ... Auxiliary Wire, 42・
...Cleaning pipe, 43...Cleaning nozzle.

Claims (7)

[Claims] (1) A pair of filter cloths (16,
A filter cloth hoisting device (31) that suspends and supports the pair of filter cloths (16, 16) is placed above the filter plate (5), and ) is arranged below the filter plate (5), and the pair of filter cloths (16, 16) are moved below the filter plate by the filter cloth rewinding device (32). While unwinding, the pair of filter cloths (16, 1
6) to a predetermined position between the adjacent filter plates (5, 5). ) is configured such that the unwinding speeds of the filter presses are different from each other. (2) The filter cloth rewinding device (32) includes the adjacent filter plate (5).
, 5), the lower ends of the pair of filter cloths (16, 16) are connected to each other, and the filter cloth unwinding shafts (27, 28) have different diameters. (27, 2
8), the pair of filter cloths (1) are rotated in the filter cloth unwinding direction.
6, 16) The filter press according to claim 1, wherein the filter press is configured to unwind the filter press. (3) The filter cloth winding device (31), when winding up the filter cloth,
3. The filter press according to claim 1, wherein the pair of filter cloths (16, 16) are integrally and simultaneously rolled up to the predetermined position. (4) The filter cloth winding device (31) includes a filter cloth positioning drive pulley (21) and a pair of filter cloth winding drive pulleys (22, 23) each having a different diameter, and these drive pulleys ( The hoisting shaft (9) rotates the
), the diameter of the filter cloth positioning drive pulley (21) is the largest among the drive pulleys (21, 22, 23), and the filter cloth positioning drive pulley (21)
includes a pair of filter cloths (16, 5) between the adjacent filter plates (5, 5).
16) are connected to each other via a string-like member (24), and both filter cloths (16, 16) are simultaneously wound up. The large driving pulley (22) has a filter cloth rewinding shaft (27) having a larger filter cloth rewinding shaft diameter among the pair of filter cloths (16, 16) between the adjacent filter plates (5, 5).
The upper part of one filter cloth (16) connected to the string member (2
5), and among the pair of filter cloth winding drive pulleys (22, 23), the drive pulley (2
3) includes a pair of filter cloths (1) between the adjacent filter plates (5, 5).
6, 16), the upper part of the other filter cloth (16) connected to the filter cloth unwinding shaft (28) having a smaller filter cloth unwinding shaft diameter is connected via a string-like member (26). A filter press according to claim 2. (5) Each of the filter plates (5) is constituted by a frame (5a) having a space (5b) penetrating therein in the thickness direction of the filter plate, and the pair of filters sandwich each of the filter plates (5). The cloths (16, 16) are arranged on both sides in the thickness direction of each frame (5a) of each filter plate (5) to surround the space (5b) formed inside the frame (5a). The filter press according to any one of claims 1 to 4, wherein the winding and unwinding operations of each of the filter cloths (16) are performed outside of each of the filter plates. (6) Each of the pair of filter cloths (16, 16) between the adjacent filter plates (5, 5) is provided with a stock solution supply port (16a), and the periphery of the stock solution supply port (16a) is provided with a stock solution supply port (16a). , is provided with a stock solution supply plate (34) having through holes (34d, 34e) communicating with the stock solution supply port (16a), so that when the filter plate is tightened, the stock solution supply port (16a) of each filter cloth (16) The through holes (34d, 34e) of each stock solution supply plate (34) form a communication tube for stock solution supply, and the pair of filter cloths (16, 16) between adjacent filter plates (5, 5) are connected to each other. The above stock solution supply plate (
34) has protrusions (34b) on each surface, and when the filter plate is tightened, the protrusions (34b) come into contact with the opposing stock solution supply plate (34), and between the two stock solution supply plates (34, 34), Claim 5: A gap communicating with the communicating pipe is formed.
The filter press described in section. (7) Each of the filter plates is composed of a filter bed and a frame surrounding the filter bed, and the pair of filter cloths sandwiching the filter plate are arranged on both sides in the thickness direction of each frame of each filter plate. 5. The filter press according to claim 1, wherein the filter press is sandwiched between the filter beds.