JPS5987009A - Feed liquid supply apparatus of filter press - Google Patents

Abstract

PURPOSE:To make it possible to smoothly supply a feed liquid and to faciliate washing and repairing, by a method wherein press members each having a through hole are attached to the surface of the filter cloths around a feed liquid supply port and the feed liquid is supplied between filter cloths through the inside of the gap between the press members. CONSTITUTION:The filter cloth side surfaces of a pair of press plates 5 are respectively pressed to a packing member 9 for forming the feed liquid holes 2'a, 2a of filer plate 2', 2 through filter cloths 4 to clamp the filter plates 2', 2. A feed liquid is flowed into the through hole 5a of the press plate from the feed liquid hole 2a of the filter plate 2 through the feed liquid supply port 4a of the filter cloth 4 and a part of the feed liquid is supplied into the filter chamber 10 formed between the filter cloths 4 from the gap between the press plate 5. The remaining feed liquid is supplied to the feed liquid hole 2'a of the adjacent filter plate 2' from the through hole 5a of the press plate 5 through the feed liquid supply hole 4a of the filter cloth 4.

Description

Detailed Description of the Invention Technical Field The present invention relates to a filter cloth running type filter press in which a pair of filter cloths are run vertically between adjacent filter plates. This invention relates to the structure of a stock solution supply device that guides stock solution between a pair of filter cloths from a stock solution hole in a filter plate in a mutually tightened state.

Prior Art Conventionally, a filter press has a pair of filter cloths interposed between adjacent filter plates, and a stock solution supply plate interposed between the pair of filter cloths. This stock solution supply plate is provided with a through hole communicating with the stock solution supply port of the filter cloth, and a liquid supply path that extends downward from the through hole and is open at its lower end. Then, the stock solution supply plate is fixed by tightening the adjacent filter plates, and the stock solution is passed through the stock solution hole of the filter plate, the stock solution supply port of the filter cloth, and the liquid supply path from the through hole of the stock solution supply plate, and is passed between the filter cloths. It is designed to be supplied to the general chamber formed in

By the way, when the above-mentioned stock solution supply plate is used, since the stock solution supply plate has a liquid supply path inside the plate, there is a limit to the width of the liquid supply path, and there is a limit to the width of the liquid supply path. Even if the stock solution remains, it cannot be completely cleaned, and the liquid supply path is blocked, and furthermore, it is difficult to repair the blocked liquid supply path.

Purpose of the Invention The purpose of the present invention is to solve the above-mentioned problems, and to supply the stock solution freely and smoothly into the filter chamber without any restrictions on the width of the feed path for supplying the stock solution into the filter chamber. It is an object of the present invention to provide a stock solution supply device for a filter press in which the remaining stock solution can be easily washed and repaired.

Structure and operation of the invention The structure and operation of the present invention are such that the surfaces facing each other around each stock solution supply port of a pair of filter cloths sandwiched between adjacent filter plates,
Pressing members each having a through hole are brought into contact with each other, each of the pressing members is attached to the filter cloth by a plurality of fastening members, and both end surfaces of the spacer portion of the fastening member are brought into contact with the opposing surfaces of both of the pressing members. to form a gap between the presser members, and pass the stock solution through the stock solution hole of the filter plate, the stock solution supply port of the filter cloth, and the through hole of the presser member, and further through the gap between the presser members. It is characterized in that it is supplied between the pair of filter cloths.

Effects of the Invention According to the present invention, as configured as described above, there is no restriction on the liquid supply path for supplying the stock solution into the filter chamber, and the stock solution can be fed from the through hole of the holding member to any direction around it, such as up, down, left, or right. The stock solution can be supplied freely and smoothly, increasing the rate of supply of stock solution into the filter chamber and improving production efficiency, and the stock solution remaining between both presser members can be easily cleaned, and repair is possible. Not only can this be done easily, but the structure can also be an hour wheel and can be easily assembled.

Further, according to the present invention, since the holding member is attached around the stock solution supply port of the filter cloth, the stock solution hole of the filter plate and the through hole of the holding member are reliably communicated, and the holding member is brought into close contact with the filter plate. I can do it. In addition, in the conventional stock solution supply plate, the thickness of the plate is thick because the liquid supply path is provided inside the plate, and therefore the plate itself is heavy and puts an excessive load on the filter cloth.However, according to the present invention, both presser members The filter cloth is attached to the filter cloth by a fastening member, and a gap is formed between both holding members by this fastening member, so that the holding member attached to the filter cloth can be made thinner and lighter than the conventional stock solution supply plate described above. This prevents overload from being applied to the filter cloth. Also,
In the conventional stock solution supply plate, a liquid supply path was provided inside the plate, so it was necessary to improve the accuracy of the entire plate. It is only necessary to increase the precision of the parts, and manufacturing costs can be reduced.

EXAMPLES Below, the present invention will be specifically explained based on illustrated examples.

As shown in FIG. 1.2.3, a filter press equipped with a stock solution supply device 1 according to an embodiment of the present invention has filter plates 2, 2.
When the frame is opened, a pair of filter cloths 4, 4 whose upper ends are supported by filter cloth hanging rods 3 are run vertically between the adjacent normal filter plates 2 and the pressing hoe plate 2, while at the time of filtration, the filter plates 2 .2 are tightened together, the stock solution is introduced between the pair of filter cloths 4, 4 through the J composition supply device 1 from the filter plates z, zcv original filter holes za, za.

The stock solution supply device 1 includes a presser plate 5□5 as a presser member.
and a countersunk screw as a fastening member7. . . , 7 and a nut 6, . . . as a spacer portion of the fastening member.

It is roughly composed of 6).

The presser plate 5 is a vertically elongated plate with a semicircular upper part,
A circular through hole 5a is provided in the central portion in the thickness direction. In addition, counter-bore screw holes 5b, . . . , 5b are provided around the through-hole 5a on the surface facing the filter cloth 4 and at the lower part of the holding plate 5 at appropriate intervals.

Therefore, the press plate 5 is brought into contact with the periphery of the stock solution supply port 4a on each opposing surface of the pair of filter cloths 4, 4 interposed between the adjacent filter plates 2, 2, and the countersunk screw 7. ..., 7
is passed through the filter cloth 4 and the holding plate 5, so that the threaded portion 7a of the countersunk screw 7 protrudes from the opposing surface of the holding plate 5, and the filter cloth 4 is slightly inserted into each screw threading hole of each holding plate 5. 5b, and attach each presser plate 5 to the filter cloth 4 so that the filter cloth 4 at the attachment part of the presser plate 5 does not loosen.
The through holes 5a of each holding plate 5 are made to communicate with the stock solution supply port 4a. Then, the threaded portions 7a of the countersunk screws 7, which are attached to both the presser plates 5 and 5 and are opposed to each other, are connected to each other with a nut 6, and the nut 6 is inserted between the presser plates 5.
Gaps 8 are formed at regular intervals and have the same dimensions as the thickness of.

The stock solution supply device 1 configured as described above operates as follows.

In Figure 3, the two filter plates 2' and 2 on the right side indicate the filter plates 2' and 2.
, 2, the filter cloth sides of the pair of holding plates 5.5 are connected to the stock solution holes 2a, 2a of the filter plates 2', 2 through the filter cloth 4.
are pressed and brought into close contact with the packing members 9, 9 forming the .

Thereafter, the stock solution is made to flow from the stock solution hole 2a of the filter plate 2 through the stock solution supply port 4a of the filter cloth 4 into the through hole 5a of one of the presser plates 5, for example, and a part of the stock solution is transferred to both pressers. Board 5
, 5 into the general chamber 1o formed between the pair of filter cloths 4, 4 for filtration. On the other hand, the remaining stock solution is supplied from the through hole 6a of the other holding plate 5 to the stock solution hole 2a of the adjacent filter plate 2 via the stock solution supply port 4a of the filter cloth 4.

In addition, when the filter plates 2 and 2 are opened as shown by the two filter plates 2 and 2 on the left side in FIG. While winding up the cloth 4° 4, the work of cleaning the undiluted solution remaining on the filter cloth 4 and the opposing surfaces of both presser plates 5, 5 is performed.

According to this embodiment, either the nut 6 is rotated or the countersunk screw 7 is rotated.
,...,7 by rotating both presser plates 5, 5.
The connection between them can be easily released, and the presser foot 5 can be easily repaired or disassembled for cleaning. Further, since the gaps 8 are formed in advance between the two presser plates 5, 5 by the nuts 6, . It is possible to reliably supply the stock solution into the total chamber 10 of 4 rooms.

Note that the present invention is not limited to the above embodiments, and can be implemented in various other forms.

For example, the filter plates 2, 2 that hold the filter cloths 4, 4 to which the above-mentioned presser plates 5, 5 are attached are not limited to filter plates of the undiluted solution supply type outside the filtration surface as shown in the figure, but also have undiluted solution holes in the filtration surface. A filtration plate that supplies a stock solution within the filtration surface may also be used.

Further, as shown in FIG. 4.5, the holding plate 5 may be a thin holding plate 5, and an outer plate 11 may be attached to the filter plate side of the filter cloth 4. This presser plate 5 is a plate material that abuts around the stock solution supply port 4a on the opposing surface of the filter cloth 4 and has approximately the same shape as the presser plate 5 of the previous embodiment. The outer plate 11 is a top-shaped plate material that abuts around the stock solution supply port 4a on the filter plate side surface of the filter cloth 4. Then, from the filter plate side, outer plate 1
The countersunk screws 7 are passed through the threaded holes 11b of No. 1 and the screw holes 5b of the filter cloth 4 and the presser plate 5, respectively, so that they protrude beyond the presser plate 5, and the presser plate 5 and outer plate 11 are attached to the filter cloth 4, and the opposing presser plates are attached. Board 5
, 5 and which are opposed to each other by connecting the threaded portions 7a of the countersunk screws 7 to each other with nuts 6 to connect the opposing presser plates 5,
A gap 8 at a constant interval is formed between the holes 5 and 5.

In addition, as shown in FIG. 6-17, instead of the presser plate 5, an annular plate 12 and a lower part of the annular plate 12, which are in contact with the annular plate 12 around the stock solution supply port 4a on the opposing surface of the filter cloth 4. It may also be configured with a backing plate 13 disposed at.

In this way, the weight of the stock solution supply device can be reduced, and the load on the filter cloth 4 can be reduced.

In addition, as shown in FIG.
and oak) 15.15.

The side threaded member 14 is provided with a hexagonal columnar spacer portion 14a at its axial center, and threaded portions 141) and 14b are provided on the shafts on both sides of the spacer portion 14a, respectively. Then, each threaded portion 141) of the side threaded member 14 is passed through each threaded hole of the presser plate 5, filter cloth 4, and outer plate 11, and tightened with a nut 15. Both end faces of the spacer portion 14a of the side threaded member 14 are tightened. The opposing surfaces of both presser plates 5, 5 are brought into contact with each other, and a gap 8 is formed between the opposing surfaces of both presser plates 5', 5. Note that a counterbore 11C is provided on the filter plate side of the screw hole 11b of the outer plate 11 so that the nut 15 can be attached to the outer plate 1.
1 protrudes toward the filter plate side so as not to impair the sealing performance between the outer plate 11 and the packing parts 9, 9 of the filter plate 2°2'.

Further, the holding plate does not need to be a single plate, and may be divided into l pieces in the circumferential direction, and may be composed of, for example, a large number of washers. Further, the shape of the presser plate is not limited to the above-described shape, but any shape such as an ellipse may be used as long as it can function as a presser member.

Further, if the presser plate is extremely thin, a raised portion for inserting a bolt or the like may be appropriately formed on its surface to provide strength.

Further, the fastening member is not limited to a countersunk screw, and any material such as a bolt or pin may be used as long as it can attach the presser member to the e-cloth and form a gap between both presser members.

Furthermore, by making the through holes 5a and 52L of the holding plates 5 and 5 smaller than the stock solution supply port 4a of the filter cloth 4, the area around the stock solution supply port 4a of the filter cloth 4 can be protected and the flow rate of the stock solution can be adjusted. I can do it. Furthermore, the through holes 5a, 5 of the presser plate 5.5
It is also possible to gradually reduce a from the stock solution supply side of the filter press toward the end thereof to provide a narrowing gradient to the stock solution supply path.

Either embodiment can achieve the intended purpose.

[Brief explanation of drawings]

FIG. 1 shows an explanatory diagram showing a holding plate of a stock solution supply device according to an embodiment of the present invention, the left side of the center line is a partially sectional front view, the right side of the center line is a rear view, and FIG. 2 is the same as FIG. 1. FIG. 3 is a vertical cross-sectional view of a main part of a filter press plate equipped with the stock solution supply device shown in FIG. 2,
The two filter plates on the left side of the figure are cross-sectional views showing the open state of the filter plates.
The two filter plates on the right side of the figure are cross-sectional views showing the tightened state of the filter plates.
FIG. 4 is an explanatory diagram showing a modification of FIG. 1, FIG. 5 is a vertical cross-sectional side view of the stock solution supply plate shown in FIG. 4, and FIG. 6 is a partial cross-section showing another modification of FIG. 1. A front view, FIG. 7 is a vertical cross-sectional side view of the stock solution supply device shown in FIG. 6, and FIG. 8 is a vertical cross-sectional view of a main part showing a modification of the fastening member. 11. - Stock solution supply device, 2...filter plate, 4...filter cloth,
5,50.・Holding plate, 5a... Through hole, 6... Nut, 7... Flat head screw, 8... Gap, 10... General chamber,
DESCRIPTION OF SYMBOLS 11... Outer plate, 12... Annular plate, 13... Back plate, 14... Both screw members, 15... Nut. Patent applicant: Kurita Kikai Seisakusho Co., Ltd. Representative Patent attorney Aoyama Aoyama and two others Figure 1 6 Figure 2

Claims (1)

[Claims] (1) A presser member having a through hole is brought into contact with the opposing surfaces around each stock solution supply port of a pair of filter cloths sandwiched between adjacent filter plates, and each presser member is attached to the filter cloth. It is attached by a plurality of fastening members, and both end surfaces of the spacer portion of the fastening member are brought into contact with the opposing surfaces of both the holding members to form a gap between the holding members, and the stock solution is transferred to the filter plate. A filter characterized in that the solution is supplied between the pair of filter cloths through the solution hole, the solution supply port of the filter cloth, and the through hole of the presser member, and further through the gap between the presser members. Press stock solution supply device.