JPS6112732B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a filter press that separates a stock solution into a liquid and a residue by filtration or squeezing.

Conventional technology Conventionally, in a filter press, a pair of cloths whose upper ends are connected by a hanging rod are hung between adjacent plates so as to be movable up and down, and the lower ends of the pair of cloths sandwiching each plate are connected. A rod is installed on the lower side of the plate below the connecting part along the width direction of the plate,
By lowering the hanging rod when opening the board,
The cloth between the hanging rod and the connecting portion that is engaged by the rod and prevented from descending naturally stretches approximately U due to its own weight.
There is a type that is bent in a letter shape to peel off the residue attached to the cloth from the cloth.
Publication No. 36313).

By the way, in the filter press according to the above structure, when the plate frame is opened, a substantially U-shaped bent part is naturally formed between the plate hanging rod and the connecting part latched to the plate side as it descends due to its own weight. Therefore, large plate-like residues will peel off and fall off from the fabric, but because the above-mentioned bent part is just naturally bent with slack, small pieces of residue will not peel off from the fabric. There was a problem when there was. In addition, since the cloth is naturally bent into a substantially U-shape by its own weight as described above, the cloth swings when the cloth hanging rod is lowered and comes into contact with the plate, causing damage and damage to the pair of cloth located between the plates. There was a problem in that since the cloths were oscillated, the cloths came into contact with each other, which hindered the separation of the residue from the cloth.

OBJECT OF THE INVENTION The purpose of the present invention is to solve the above-mentioned problems by ensuring that the residue is peeled off from the fabric and falling off, and that the fabric does not come into contact with the board when running due to peeling of the residue, thereby ensuring that the fabric is not damaged. An object of the present invention is to provide a filter press that can prevent the above problems.

Structure of the Invention In order to achieve the above object, the present invention provides a pair of cloths on both sides of each plate so as to be able to freely run along the vertical direction, and connects the pair of cloths below the plate via a pair of support brackets to the lower part of each plate. A pair or at least one rod-shaped or roller-shaped cloth guiding member is provided between the cloths, and the lower portions of the pair of cloths on both sides of the plate are inverted into a substantially U-shape below the cloth guiding member, A bar-shaped weight member is placed on each of the inverted parts, and the lower end of each cloth is wrapped around each of the cloth guide members and connected to each of the weight members, or the pair of cloths is placed on one cloth guide member. The structure was such that they were overlapped and hung around and connected to one of the weight members. According to this configuration, the cloth can be made to run downward in a stretched state by the weight of the weight member, and
By rotating the cloth around a weight member, residue adhering to the cloth is surely peeled off from the cloth and shaken off.

Embodiments The present invention will be specifically described below based on illustrated embodiments.

In the filter press shown in Fig. 1, 1 is a front stand that supports a main plate 2, 3 is a rear stand, and 4, 4 are side beams that are spanned between both sides of the front and rear stands 1, 3, respectively. ,5,...,
5 are interconnected by connecting chains 6, 6,
A plate 7, which can be moved in the front and back direction with a pair of handles 5a provided on both sides slidably placed on the side beams 4, 4, is supported by the rear stand 3. When the movable plate 7 is moved backward to the retreat position A shown by the dotted line in FIG. The plates 5, . . . , 5 which are in a tightened state are opened all at once.

On the other hand, reference numerals 9 and 9 denote a pair of left and right drive shafts each having a polygonal cross section, which are supported between the upper sides of the front and rear stands 1 and 3, respectively. A reduction gear is fitted to a pair of left and right take-up pulleys 11, 11, which are rotatably supported on both sides above the plate 5 by 10, 10, respectively, and is installed on a mounting base 12 attached to the upper part of the rear stand 3. The pair of left and right drive shafts 9, 9 are rotated in the forward and reverse directions via the bevel gear transmission mechanism 14 by the forward and reverse drive of the attached motor 13.

One end of the left and right take-up pulleys 11, 11 is locked to each take-up pulley 11, and the other end is connected to the cloth 16.
A hanging cord 15 fastened to a connecting fitting attached to the end of a cloth hanging rod 17 supporting the upper end edge is wrapped around the hanging cord 15, and the upper end of the cloth is moved up and down via the hanging cord 15 as the take-up pulley 11 rotates. That's what I do.

On the other hand, on the lower surface of the lower frame of each plate 5, as shown in FIGS. 2 and 3, there is a pair of support brackets 1 having a width smaller than the thickness of each plate 5.
8 and 18 projecting downward. Between the pair of support brackets 18, 18, a pair of cloth guide rods 1 as cloth guide members are arranged substantially horizontally, facing each other.
9 and 19 are provided. And each guide rod 1
After forming a substantially U-shaped inverted portion 16a in the cloth 16 below the cloth 16, the cloth 16 is hung around each of the guide rods 19. A rod-shaped weight member 20 is placed on the inverted portion 16a of each of the cloths 16, and a bag binding portion 16b is formed at the lower end of each cloth 16 wrapped around each cloth guide rod 19, as shown in FIG. The cloth 16 is connected to the weight member 20 by fitting the weight member 20 into the bag binding portion 16b. Therefore, as shown in FIG.
The front cloth 16-1 is reversed to the plate side in a substantially U-shape below the one cloth guide rod 19 to form an inverted portion 16a, and then
9 from the rear side of the plate toward the front side, and is connected to the weight member 20 described above. on the other hand,
The cloth 16-2 on the rear side of the plate 5 is reversed to the plate side in a substantially U-shape below the other cloth guide rod 19 to form an inverted portion 16a, and then
9 from the front side of the plate toward the rear side, and is connected to the weight member 20 described above.

Further, a pair of weight members 20 of each plate 5,
Brackets 21, 21 are provided on both sides of the weight members 20, 20, and cloths 16-1, 16 are placed below the weight members 20, 20.
-Cleaning pipe 2 as a cloth cleaning device for cleaning 2.
2 is suspended and supported. The surface of the cleaning tube 22 is provided with a large number of cleaning nozzles 23, .

Now, as shown by the solid line in Fig. 1, as the movable plate 7 moves forward, the plates 5, ..., 5 are simultaneously tightened to the front stand 1 side, and the stock solution is not supported on the front stand 1. From the stock solution supply pipe 1a, through the stock solution supply port 5c of each plate 5 (see FIG. 2) and the stock solution supply fitting 26 attached to each cloth 16, the cloth 16-1,
16-2 to separate the residue and liquid, and the liquid is recovered from the liquid recovery pipe 24 and filtered.

When one overstep is completed and the movable plate 7 is retreated to position A in FIG. 1, the connecting chains 6,...
. . , 6 are opened all at once, starting from the movable plate side and keeping a constant distance from each other, as shown in FIG. 3. At the same time as the plate 5 is opened, most of the separated residue 25 falls down due to gravity while remaining in the form of a cake. At this stage, each cloth 1
6 is a weight member 2 connected to the lower end of each cloth 16.
A downward tensile force is applied to each cloth 16 due to the zero gravity, and the cloth 16 is stretched a little apart from each plate 5. Therefore, the motor 13 is driven while being decelerated, and the take-up pulley 1 is driven through the left and right drive shafts 9, 9.
Unwind the hanging cords 15, 15 that were wrapped around 1, 11,
The cloth hanging rod 17 is lowered. Simultaneously with the lowering of the cloth hanging rod 17, the cloth 16 rotates around the weight member 20 while sliding relative to the bag binding portion 16b of the cloth 16 surrounding the weight member 20, and furthermore, the guide rod 19 rotates. The weight member 20 is lowered by rotating. Cloths 16-1, 16- on the front and back of each board 5
2 are synchronously lowered as described above, and the cleaning tube 22 is also lowered together with the weight members 20, 20. In this case, as shown in FIG.
6 rotates around the weight member 20,
Due to the difference in curvature between the cloth 16 and the residue 25 attached to the cloth 16, the residue 25 is separated from the cloth 16 and shaken off from the cloth 16. When the upper end of each cloth 16 descends to the lower end position shown in FIG. 3 by the solid line for the left end plate 5 and the dashed line for the other plates 5,... The residue 25 is completely shaken off from the cloth 16. Next, the motor 13 is driven in the reverse direction, and the hanging cords 15, 15 are wound up with the winding pulleys 11, 11.
Raise the cloth hanging rod 17. As the cloth hanging rod 17 rises, the cloth 16 between the weight member 20 and the guide rod 19 is rotated around the guide rod 19, and the weight member 2
0, the weight members 20, 20 rise together with the upper end of each cloth 16, and return to the original position, that is, the state in which the cloth 16 is stretched on each plate 5.
The cloth 16 from which the residue 25 has been shaken off is cleaned by the cleaning pipe 22 at the same time as the residue 25 is shaken off, or when the upper end of the cloth 16 is raised.

In this embodiment, the cleaning tube 22 is connected to the weight member 2.
Since it is arranged to descend together with zero, the cleaning work on the cloth 16 can be performed uniformly and reliably.

Note that the present invention is not limited to this example, and can be implemented in various other ways. for example,
As shown in FIGS. 7, 8, and 9, the guide rod 19' may be shared by the cloths 16-1 and 16-2 before and after the plate. That is, the cloth 16 on the front side of the plate 5
-1 is wrapped around the weight member 20 and the guide rod 19' as in the previous embodiment, while the cloth 16-2 on the rear side of the plate 5 is wrapped around the weight member 20 and the inverted part 16a After forming the cloth guide rod 1
9', wrap it over the cloth 16-1 on the front side of the board from the rear side of the board toward the front side, and connect the lower end of the cloth to the cloth 16-1 to indirectly connect it to the weight member 20. ing. Note that other members and operations are the same as those in the previous embodiment, and are given the same reference numerals as in the previous embodiment, and their explanations will be omitted. According to this embodiment, the number of guide rods can be reduced compared to the previous embodiment,
The lower part of the plate can have a simpler structure.

Further, as shown in FIG. 10, a locking rod 26 is inserted into the bag binding part 16b at the tip of the lower end of the cloth, and is fitted into the cylindrical weight member 20' from the notch groove 20'a to prevent it from coming out. Accordingly, the cloth 16 and the weight member 2
0 may be connected.

Further, the cloth guide rod 19 is supported by the support bracket 18,
The position of the cloth 18 may be changed in the vertical direction so that cloth 16 of various lengths can be accommodated. Also, a cloth guide roller may be used instead of the cloth guide rod. Furthermore, the weight of the weight member 20 can be changed to various types, so that the weight of the cloth 1 can be changed.
The degree of expansion of 6 may be adjustable. Further, the stock solution hole 5c of the plate 5 may also be located within the plane of the plate, and furthermore, it is not limited to a normal plate but may be a compressed plate or the like. Further, each cloth may be hung separately from its upper edge.

Effects of the Invention As described in detail in the above embodiments, the present invention provides a method in which a weight member is placed on an inverted portion formed on each cloth below a pair or at least one cloth guide member at a lower part of the plate, and a weight member is placed on an inverted portion formed on each cloth, and is wrapped around the cloth guide member and connected to each of the weight members, or a pair of cloths on both sides of the plate are overlapped and wrapped around the one cloth guide member and connected to one of the weight members. Then, when the upper end of the cloth is lowered, the weight of the weight member causes the cloth to run downward in a stretched state, and the cloth is rotated around the weight member, thereby changing the curvature of the cloth and the residue attached to the cloth. Since the residue is peeled off from the cloth and shaken off by the difference, the residue can be removed uniformly and reliably from the cloth, and the cloth does not come into contact with the board when the cloth is running, thereby reliably preventing damage to the cloth. . Further, there is no need for spring means for stretching the cloth, and the structure below the plate can be made extremely simple, and installation and repair can be easily performed. In addition, when the board is opened, the cloth is spread out by the weight member and runs downwards, without causing the cloth to overlap between the boards as in the past.
In order to flip the cloth under the board instead of between the boards,
The opening distance between the plates can be made narrower than before. In addition, the lower end of the cloth is connected to a weight member so that it descends together with the weight member, so the lowering distance of the cloth is approximately halved compared to a case where the lower end of the cloth is fixed to the board side. be able to.

[Brief explanation of the drawing]

FIG. 1 is a side view of a filter press according to an embodiment of the present invention, and FIGS. 2 and 3 are a front view of the plate of the filter press shown in FIG. Figure 4 is an explanatory diagram showing how the cloth is hung on the cloth guide rod, etc., Figure 5 is a side view of the main part of the plate, Figure 6 is a side view at the lower end position of the upper end of the cloth, and Figure 7 is the same as Figure 3. FIG. 8 is an explanatory diagram showing another embodiment of FIG. 4, FIG. 9 is a side view of essential parts showing another embodiment of FIG. 5, and FIG. FIG. 7 is a cross-sectional side view showing another connection relationship between the weight member and the cloth. 5...Plate, 16...Cloth, 18...Support bracket, 19,19'...Cloth guide rod, 20,2
0'... Weight member, 22... Cleaning pipe, 25...
Edge.

Claims (1)

[Claims] 1. A pair of cloths is provided on both sides of each board so as to be able to run freely along the vertical direction, and a pair or at least one cloth guide member is provided between the pair of cloths below each board via a pair of support brackets. , invert the lower portions of the pair of cloths on both sides of the plate below the cloth guide members, place a bar-shaped weight member on each of the reversed portions, and hang the lower ends of each cloth on each of the cloth guide members. A filter press characterized in that the filter press is connected to each of the weight members by rotating the cloth, or the pair of cloths are overlapped and wrapped around the one cloth guide member and connected to one of the weight members.