JPH0261284B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a double filter press in which plates and frames are arranged alternately, in which a pair of cloths is provided between one adjacent frame and the plate. Concerning the arranged filter press.

BACKGROUND OF THE INVENTION Conventionally, multiple filter presses with various structures are known. For example, as shown in FIG.
2 and 52 are arranged, a source liquid is supplied into a frame 51 surrounded by two cloths 52 on the front and back, the raw liquid is passed through the cloth 52 and the liquid is discharged outside the frame 51, and a cake 53 is removed. When the board 50 and the frame 51 are opened so as to remain within the frame 51, the frame 51
There is one in which the cake 51 is removed from the container. To remove this cake 53 from the frame 51, a cake pushing member is press-fitted into the frame 51 to push out the cake 53, or a first
As shown in FIG.
I'm trying to make it fall.

Problems to be Solved by the Invention However, with the structure described above, in order to remove the cake from the frame, it is necessary to include a cake pushing member, or a device for tilting the frame or a device for applying vibration to the frame. However, there is a problem that the cake removal work is complicated.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a filter press which has a simple structure and can easily and reliably remove cake from a holding frame.

Means for Solving the Problems In order to achieve the above object, the present invention is configured such that a pair of cloths is disposed between a pair of frames adjacent to a board and one of the frames. That is,
Plates and frames are arranged alternately, a pair of cloths are arranged between the plate and the frame of one of the pair of plates adjacent to both sides of the plate, and each cloth is coated with the undiluted solution of each plate. A stock solution supply plate is provided with a stock solution supply hole that communicates with the supply port, and a stock solution supply plate having a stock solution supply hole that communicates with the hole is fixed around the stock solution supply hole, and when the plate and the frame are closed, each pair of the above The cloths are positioned within each of the above frames, and the stock solution supply hole of each cloth and the stock solution supply hole of the stock solution supply plate communicate with the stock solution supply port of each plate, and the stock solution is placed between a pair of cloths between the facing stock solution supply plates. The structure was such that a gap was formed while supplying.

Effect of the Invention In the above structure, when the plates and frames are closed, a pair of cloths are housed in each frame, and the stock solution supply port of each plate, the stock solution supply hole of each cloth, and the stock solution supply port of the stock solution supply plate. The stock solution is passed through each stock solution supply port and the stock solution supply hole, and the stock solution is supplied from between the opposing stock solution supply plates to between the pair of cloths in the frame to carry out filtration. On the other hand, when the board and frame are opened, a pair of cloths with a cake sandwiched between them are taken out from each frame to prevent the cake from remaining inside the frame.

Examples Examples according to the present invention will be described in detail below with reference to FIGS. 1 to 9.

The filter press according to this embodiment has the first,
As shown in Figures 2 and 3, a large number of plates 3 and frames 4 are arranged alternately between the front and rear stands 1 and 2 and are movable back and forth, and each plate 3 and frame 4 is connected to the adjacent frame 4 or plate 3. Connected link 17 to
When the movable plate 25 is moved back to open the plates 3 and frames 4, all the plates 3 and frames 4 are connected to each other by the connecting links 17,..., 17.
It is a type of filter press that can open the frames at once, and a pair of cloths 6, 6 are placed between the front frame 4 of the frames 4, 4 adjacent to the front and rear of the plate 3, and the plates and frames are opened. When the frame is closed, a pair of cloths 6, 6
is inserted into the plate 4, the plate 3 and the frame 4 are tightened, and the undiluted solution is supplied between the pair of cloths 6, 6 in the frame 4 to pass the undiluted solution.

A drive shaft 14 having a polygonal cross section is rotatably provided on both sides of the upper part between the front and rear stands 1 and 2, and the drive shaft 14 is mounted on the upper part of the rear stand 2.
A driving device 26 is provided to rotate the synchronously. This drive device 26 is configured to synchronously drive the pair of drive shafts 14, 14 in the forward and reverse directions via the bevel gear transmission mechanism 15 by forward and reverse driving of the motor 16 with a speed reducer.

As shown in FIG. 5, each of the frames 4 is a frame body having a known structure having a large opening 4a in the center, and the center part of the upper surface of the frame projects upward in an inverted U-shape to form a stock solution supply section. 4e, and the stock solution is supplied within the frame 4 and between the pair of cloths 6, 6 through the stock solution supply hole 6a of the plate 3 and cloth 6 into the stock solution supply portion 4e. At each corner of each frame 4, an ear 4b is made to protrude laterally, and each ear 4b is provided with a liquid recovery port 4c.
18 are provided in a protruding manner, and each handle 18 is movably mounted on each guide rail 5 installed laterally between the front and rear stands 1 and 2 to guide the longitudinal movement of each frame 4. A pair of L-shaped brackets 2 each having a long groove 22a along the vertical direction is provided on both sides of the lower part of each frame 4.
2 and 22 are fixed, a cloth guide rod 20 is arranged between the brackets 22 and 22, and each end of the cloth guide rod 20 is fit into the long groove 22a of each bracket 22 so as to be vertically movable and rotatable, The cloth 6 is wrapped around this cloth guide rod 20. Further, curved wire storage recesses 4d are provided on the front and rear surfaces of the connecting portions of the respective ears 4b of each frame 4 and the frame body, respectively. The inner surface of the frame 4 is formed into an inclined surface that extends in the direction in which the cloths 6 come out, so that each cloth 6 can easily come out of the frame 4.

On the other hand, each plate 3 has a known structure, and as shown in FIG. 4, has an overboard 3a with a slight recess on both sides of the central part and an uneven part along the vertical direction on the bottom surface, and ears on each corner. 3b to protrude laterally, each lug 3b is provided with a liquid recovery port 3c communicating with each liquid recovery port 4c of the frame 4, and handles 18, 18 are protruded from both sides of the plate 3. Each handle 18 is movably placed on each guide rail 5 installed laterally between the front and rear stands 1 and 2 to guide the back and forth movement of each plate 3. A stock solution supply port 3e whose periphery is made of a packing member 3f is formed in the upper central part of this plate 3 in an upwardly protruding portion, and the stock solution supply port 3e
can be interlocked with the stock solution supply section 4e protruding from the upper part of the frame 4, and when the plate 3 and the frame 4 are closed, a pair of stock solution supply plates 9, 9 inside the frame 4, which will be described later,
are pressed against each other by the packing members 3f, 3f of the plates 3, 3 arranged at the front and rear of the frame to seal the area around the stock solution supply port between the stock solution supply plate 9 and the plate 3. A pair of L-shaped brackets 19, 19 having long grooves 19a, 19a in the vertical direction are fixed to both sides of the lower part of each plate 3, and the brackets 19, 1
A cloth guide rod 20 is arranged between the cloth guide rods 2 and 9.
Each end of the cloth 6 is fitted into each long groove 19a of each bracket 19 so as to be vertically movable and rotatable, and the cloth 6 is wrapped around the cloth guide rod 20. Furthermore, curved wire storage recesses 3d are provided on the front and rear surfaces of the connecting portions of each of the plates 3 between the respective ears 3b and the plate main body.

A cleaning pipe 21 is fixed below the cloth guide rod 20 and has a large number of cleaning nozzles 21a, . The cloth 6 is cleaned by spraying cleaning water onto the cloth 6 from each cleaning nozzle 21a.

Further, support members 10 are provided protrudingly from both sides of the upper part of each of the plates 3, and a support tube 11 is loosely fitted to the drive shaft 14 at the upper end of each support member 10, and at the front and rear of the support member 10. Take-up pulley 12, 12
When opening the board 3 and frame 4, respectively, the board 3 and frame 4
It is rotatably provided so as to be positioned above the center between the two. The pair of front and rear winding pulleys 12, 12 are fitted onto the drive shafts 14, 14, respectively, so as to be movable in the axial direction.
4 and 14, and are integrally driven to rotate in forward and reverse directions. Wires 13, 13, whose upper ends are locked to the respective winding pulleys 12, are wound in a single layer around the pair of front and rear winding pulleys 12, 12, respectively.
The lower ends of 13 are fixed to the end of the cloth upper end hanging rod 7 and the end of the cloth lower end hanging rod 8, respectively. Each wire 13
is, when plate 3 and frame 4 are closed, each plate 3
and wire storage recesses 3 provided in each frame 4
d and 4d so as not to obstruct the closing of the plate 3 and frame 4.

Each upper end of a pair of opposing cloths 6, 6 between the plate 3 and the frame 4 is fixed to the cloth upper end hanging rod 7,
By raising the cloth upper end hanging rod 7, the pair of cloths 6, 6 are raised simultaneously. The cloth upper end hanging rod 7 is located at the upper end position A between the board 3 and the frame 4 on the front side of the board 3 when the board 3 and the frame 4 are closed.
On the other hand, when the plate 3 and frame 4 are opened, the upper end position A between the frame 3 and the front frame 4 is
and the lower end position B.

Further, each lower end of the pair of opposing cloths 6, 6 is hung around the cloth guide rod 20 and fixed to the cloth lower end hanging rod 8, and when the cloth lower end hanging rod 8 is raised, the pair of cloths 6, 6 are fixed. The cloths 6, 6 are lowered between the plate 3 and the front frame 4. Above cloth lower end hanging rod 8
is located at the lower end position C between the plate 3 and the frame 4 on the rear side of the plate 3 when the plate 3 and the frame 4 are closed, whereas when the plate 3 and the frame 4 are opened, the position is between the plate 3 and the rear side. It can freely move up and down between a lower end position C and an upper end position D with respect to the side frame 4.

Each of the cloths 6 has its upper end fixed to the cloth upper end hanging rod 7 as described above, and its lower end is wrapped around the cloth guide rod 20 and then fixed to the cloth lower end hanging rod 8. The upper center of each cloth 6 is provided with a stock solution supply hole 6a that communicates with the stock solution supply port 3e of the plate 3, as shown in FIG. Stock solution supply port 9
The ring-shaped stock solution supply plate 9 having b is fixed. The heads of bolts 9a for attaching the stock solution supply plate 9 to the cloth 6 protrude from the surface of the stock solution supply plate 9. It comes into contact with the head of the stock solution supply plate 9a to form a constant gap between the opposing stock solution supply plates 9,9. Therefore, when the plate 3 and the frame 4 are closed, the opposing pair of cloths 6, 6 disposed between the plate 3 and the frame 4 on the front side of the plate 3 enter into the frame 4, and each cloth 6 Each bolt 9 of the stock solution supply plate 9
The head of the stock solution supply port 3e of the plate 3 is brought into contact with the stock solution supply port 3e to form a constant interval between the two stock solution supply plates 9, 9.
The stock solution supplied from the cloth 6 is passed through the stock solution supply hole 6a of the cloth 6 and is supplied between the pair of cloths 6, 6 from between the stock solution supply plates 9, 9 to pass the stock solution. In each of the above-mentioned cloths 6, a cloth guide rod 20 is arranged below each plate 3 and plate 4 so as to be able to move up and down.
A downward pulling force acts on the cloth guide rod 20 to cause it to fall downward due to its own weight, and each cloth 6 is stretched with a constant force.

According to the above configuration, it operates as follows.

That is, after moving the movable plate 25 forward and tightening all the plates 3 and frames 4 to the front stand 1 side to close the frame and inserting the pair of cloths 6, 6 into each frame 4, each plate 3 is closed. From the stock solution supply port 3e to the stock solution supply hole 6 of each cloth 6 in the stock solution supply section 4e of each frame 4
a. Supply the stock solution to the stock solution supply hole 9b of the stock solution supply plate 9, and supply the stock solution between the pair of cloths 6, 6 from between the stock solution supply plates 9, 9, whose bolt heads are in contact with each other. Between the pair of cloths 6, 6 in each frame 4, the supplied undiluted solution is passed through each cloth 6, and the liquid is discharged outside the frame from the liquid recovery port 3c on each plate 3 side, while the cake 24 is transferred to the frame 4. Leave it between the inner pair of cloths 6 and 6.

When one pass process is completed, the movable plate 25 is moved backward, and the plates 3 and 4, which are sequentially connected from the movable plate 25 side by the connecting links 17, . The frame will be opened. In this way, when each plate 3 and each frame 4 are opened, each pair of cloths 6, 6 comes out from inside each frame 4 as shown in FIG. 7, and as shown in FIG. Cake 24 sandwiched between a pair of cloths 6 and 6
The cake 24 naturally falls due to its own weight.

Next, the motor 16 is driven in one direction, the pair of drive shafts 14, 14 rotate synchronously, and the take-up pulley 12, which is located above between the plate 3 and the frame 3 due to the open frame, is connected to the drive shaft 14. The wire 13 is unwound by rotating integrally, and the cloth lower end hanging rod 8 is maintained in a substantially horizontal position between the plate 3 and the frame 4 on the rear side of the plate 3, as shown in FIG. The cloth 6 is lowered between the plate 3 and the frame 4 on the front side of the plate 3, and the cloth 6 is moved to the cloth guide rod 20 below the plate 3.
The cake 24 adhering to the cloth 6 is peeled off from the cloth 6 by being run while bending around the cloth 6, and the peeled cake 24 is removed from the cloth 6 by falling naturally due to its own weight or by being shaken off by the cloth running. removed. Each drive shaft 14 is rotated until the cloth lower end hanging rod 8 is located at the upper end position D and the cloth upper end hanging rod 7 is located at the lower end position B, and each of the hanging rods 8 and 7 is positioned at each position D and B. Then, the drive of the motor 16 is stopped, and the rotation of each drive shaft 14 and therefore each take-up pulley 12 is stopped.

Next, when the motor 16 is reversely driven to reversely rotate the drive shaft 14 and each wire 13 is wound up by each winding pulley 12, the cloth upper end hanging rod 7 rises, while the cloth lower end hanging rod 8 descends. The cloth 6 rises between the plate 3 and the frame 4 on the front side of the plate 3, and the cloth 6 runs around each cloth guide rod 20 while being bent. Then, the cloth upper end hanging rod 7 is driven until it is located at the upper end position A and the cloth lower end hanging rod 8 is located at the lower end position C. When each of the hanging rods 7 and 8 is located at each position A and C, the motor 16 The rotation of each drive shaft 14 and therefore each take-up pulley 12 is stopped. This completes the cake discharging step and prepares for the next overstep. In addition, if necessary, each of the above cloths 6
Meanwhile, the cloth 6 is washed by spraying washing water from each washing nozzle 21a of the washing pipe 21 below each plate 3.

According to the above embodiment, when the plate 3 and the frame 4 are closed, the pair of cloths 6, 6 enter into the frame 4, and the undiluted solution is supplied between the pair of cloths 6, 6 in the frame 4 to carry out the filtration. At the same time, when the plate 3 and the frame 4 are opened, the pair of cloths 6, 6 are removed from the cake 2 from inside each frame 4.
Since the cake 24 is sandwiched between the pair of cloths 6 and 6, the cake 24 does not come into direct contact with the frame 4, and no cake 24 remains inside the frame 4. It can be easily and reliably removed from within. Therefore, neither a cake pushing member inserted into the frame 4 nor a device for vibrating the frame 4 is required. In addition, by changing the thickness of the frame 4 to various thicknesses and adjusting the distance between the stock solution supply plates 9, 9 of the pair of cloths 6, 6, it is possible to form between the pair of cloths 6, 6. The size of the room can be easily changed to the desired size. In addition, since the stock solution supply plate 9 of each cloth 6 enables the stock solution to be reliably supplied between the pair of cloths 6, 6, there is no need to form stock solution supply holes in the frame 4, and the structure of the frame 4 can be simplified. can be taken as a thing. Also,
When the cloth travels downward, the lower end of the cloth is caused to travel upward by the cloth lower end hanging rod, which eliminates the need for a cloth winding device and allows for a simple structure below the plate and frame. Further, since it is a dual type filter press, there is no need to particularly form a recessed overbed in the plate 3, and the plate 3 may be simply a flat plate. Further, each cloth 6 runs between the plate 3 and the frame 4 on the front side of the plate 3, while each wire 1
3 runs between the plate 3 and the frame 4 on the rear side of the plate 3. The cloth 6 and the wire 13 do not come into contact with each other during running, and there is no possibility that the wire 13 and the cloth 6 come into contact and damage any of the members. Further, since the cloth guide rod 20 is arranged to be movable up and down, no overload is applied to the cloth 6 when the cloth is traveling.

Note that the present invention is not limited to the above-mentioned embodiments, and can be implemented in various other embodiments. For example, the stock solution supply plate 9 for each cloth 6 is not limited to the one described above, and various shapes and structures can be applied. In addition, each stock solution supply plate 9 is connected to each cloth 6.
However, the fabric portions above each stock solution supply plate 9 may be connected to each other with a string-like member to facilitate alignment of the pair of stock solution supply plates 9, 9. . Further, each cloth guide rod 20 may apply a downward biasing force to each cloth 6 not only by its own weight but also by a biasing means such as a spring to stretch the cloth 6.

Effects of the Invention According to the above configuration, when the board and the frame are closed, each pair of cloths enters each frame, and between the pair of cloths in the frame, the stock solution supply port of the board, the stock solution supply hole of the cloth, The stock solution is supplied between the stock solution supply plates through the stock solution supply hole of the stock solution supply plate, and the gap between the stock solution supply plates is
The undiluted solution was supplied between the pair of cloths from the inside to carry out the filtration, and when the board and frame were opened, the pair of cloths were made to come out from inside each frame with the cake sandwiched between the pair of cloths. Since the cake is deposited in the frame through the cloth, the cake does not come into direct contact with the frame, and the cake can be easily and reliably removed from the frame. Therefore, there is no need for a cake pushing member inserted into the frame or a vibration device for vibrating the frame. In addition, each cloth is equipped with a stock solution supply plate to ensure that the stock solution is supplied between the pair of cloths, so there is no need to form stock solution supply holes in each frame, simplifying the structure of the frame. be able to. In addition, by changing the thickness of the frame and adjusting the distance between the stock solution supply plates of the pair of cloths, the size of the chamber formed between the pair of cloths can be adjusted to the desired size. can be easily changed. Further, since it is a dual-type filter press, there is no need to particularly form a recessed overbed in the plate, and it may be a simple flat plate.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a filter press according to an embodiment of the present invention, and FIG. 2 is a plan view of essential parts of the filter press, showing the right plate 3 and frame 4.
is a plan view showing the closed frame state, the remaining board on the left,
The frame and plate are a plan view showing the open frame state, and Figure 3 is a side view of the essential parts of the filter press, the left side plate, frame and plate are a side view showing the frame open state, and the remaining frame and plate on the right side. is a side view showing the closed frame state,
Figure 4 is a front view of the board, Figure 5 is a front view of the frame,
Figure 6 is a front view of the main parts of the cloth, Figures 7 and 8 are a side view of the pair of cloths in the frame with cake deposited on them, and Figure 9 is a side view of the pair of cloths taken out from the frame. 1 is a side view of the conventional filter press with the frame open and the cloth being lowered, and FIGS. 10 and 11 are side views of the conventional filter press with the frame closed and the cake being discharged from the frame, respectively. 1, 2... Front and rear stands, 3... Board, 3e...
...Standard solution supply port, 4 ...Frame, 4e ...Standard solution supply section, 5 ...Guide rail, 6 ...Cloth, 6a, 9b
...Stock solution supply hole, 7...Cloth upper end hanging rod, 8...
Cloth lower end hanging rod, 9... Raw solution supply plate, 9a... Bolt, 10... Support member, 11... Support cylinder, 12...
... Winding pulley, 13 ... Wire, 14 ... Drive shaft, 15 ... Gear transmission mechanism, 16 ... Motor, 1
7... Connecting link, 18... Handle, 19, 22...
... Bracket, 20 ... Cloth guide rod, 21 ... Cleaning pipe, 24 ... Cake, 25 ... Drive device.

Claims (1)

[Claims] 1. Plates 3 and frames 4 are arranged alternately, and a pair of cloths 6, 6 are placed between the plate 3 and one of the frames 4, 4 of the pair of frames 4, 4 adjacent to both sides of the plate 3. At the same time, each cloth 6 is provided with a stock solution supply hole 6a that communicates with the stock solution supply port 3e of each plate 3, and a stock solution supply hole 9b that communicates with the hole 6a is provided around the stock solution supply hole 6a. Fixing the plate 9, the plate 3 and the frame 4
When the frame is closed, each pair of cloths 6, 6 is positioned in each frame 4, and the stock solution supply hole 6a of each cloth 6 and the stock solution supply hole 9b of the stock solution supply plate 9 are connected to the stock solution supply port of each plate 3. A filter press characterized in that a gap for supplying the stock solution between a pair of cloths 6, 6 is formed between the stock solution supply plates 9, 9, which communicate with the filter press 3e and are opposed to each other.