JPH0257964B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an overbody of a filter press, particularly a filter press in which a cloth is attached to a frame in which a hollow part is formed by omitting the core plate of a plate of a filter press. Excessive body time.

(Prior Art) The plate of a conventional filter press is formed from a frame portion at the periphery of the plate and a core plate portion having an uneven surface, so that the plate is heavy and difficult to handle. In order to reduce the weight of the board, it is known that wire mesh or perforated boards are attached to both sides of the hollow frame of the picture frame that lacks the core board (Jikko Sho 33).
−1987, Jitko No. 35-20077, Jitko No. 57-51051
(Refer to Publications No. 57-57768).

All of the above-mentioned known plates have two wire meshes or perforated plates on both sides of the plate.
Since the wire mesh is formed by joining the back sides of two pieces of wire mesh or perforated plates, or by stretching wire over pins planted in the steps, it is possible to change the material or mesh of the wire mesh or perforated plate, It takes a lot of effort to attach and detach when replacing some parts due to damage.

As a solution to the above problem, the applicant of the present invention has proposed a method in which a notch is formed on one side of the inner periphery of the frame portion of the frame, and a mesh or porous piece having an area slightly larger than the hollow portion of the frame. A plate of a filter press (see specification of Utility Model Application No. 1989-203089), in which the plate is attached between the above-mentioned notch and a mounting frame fitted into the notch, and the inner periphery of the frame of the frame. A step part is formed on the frame, and a hollow part is formed on the inner periphery of the step part, and a part of the end of the net plate or perforated plate, which has an area slightly smaller than the hollow part, is formed on the front and back sides. A filter press plate (see the specification of Japanese Utility Model Application No. 189443/1983) was previously proposed, which is attached to a part of the stepped portion through two elastic clamping plates.

(Problems to be solved by the invention) Compared to the above-mentioned known devices, the proposed device has the following points:
It is easier to attach and detach the wire mesh and perforated plate, and the weight of the plate is reduced, but since both use wire mesh and perforated plate, it is necessary to attach and detach them.
In addition, the weight of the board is heavy and requires force to operate.

(Means for Solving the Problems) In the present invention, liquid passage holes are formed at corresponding positions of two pieces of cloth attached to both sides of a frame body forming a hollow portion, and these two liquid passage holes are The periphery of the hole is fixed to both edge surfaces of the cylindrical fixture, and the periphery of the fabric overlaps the fabric of the adjacent frame and is mounted between the frames. This is the plate of the filter press.

This invention will be explained with reference to FIGS. 1 and 2.
A hollow portion 1a is formed inside the frame 1, and the frame 1
An upper ear part 2 for mounting the frame 1 on a side bar (not shown) is formed at the center of both sides, and a lower ear part 3 for draining liquid is formed at the lower part of both sides of the frame 1. has been done. Furthermore, pantograph arms 4 that rotate when the frame body 1 is separated are supported on both upper sides of the frame body 1, and are attached to cloth hanging rods (not shown) suspended from the upper ends of both pantograph arms 4, 4. The upper end of the cloth 5 is supported. Cloth 5
A liquid passage hole 6 is bored approximately in the center of the liquid passage hole 6, and a fixture 7 is attached to the peripheral edge of the liquid passage hole 6. The fixture 7 has a cylindrical shape, and its inner hole has approximately the same inner diameter as the liquid passage hole 6. To fix the fixture 7 to the peripheral edge of the liquid passage hole 6 of the cloth 5, pass the bolt 8 through the four bolt holes of the fixture 7, and connect both sides of the fixture 7 with the bolt 8 or nut. The cloth 5 is tightened and fixed between the inner surface of the holder 9 and the inner surface of the holder 9. As described above, the peripheral edges of the liquid passage holes 6 of the two cloths 5 are fixed by the fixture 7, and the upper ends of the cloths 5 are attached to the pantograph arm 4.
After being supported on the cloth hanging rod, when the overbody is moved so as to come into close contact with the adjacent overbody, the periphery of the fabric on one side overlaps and comes into close contact with the periphery of the fabric of the adjacent overbody, and the frame 1 It is held between the two. After all the frames 1 are arranged in close contact with each other, when the stock solution A is press-fitted into the liquid passage hole 6, the stock solution flows between the bolts 8 and nuts 9 and between the adjacent overbody cloths, as shown in FIG. The liquid B that flows into the liquid chamber P that is formed, passes through the cloth, and flows into the liquid chamber Q is discharged from the lower ear part 3.

In FIGS. 1 and 2 described above, the inner edges of the liquid passage hole 6 of two pieces of cloth were joined with a short cylindrical cloth 10, and one of the cloths was shortened and passed through the liquid passage hole of the fixture 7. Known fabric attachment methods may also be used in which one side of the fabric is then unfolded. Although it is inconvenient for the length of the fixture 7 including the bolts 8 and nuts 9 to be larger than the width of the frame 1, it is also possible for the bolts 8 and the adjacent nuts 9 to butt against each other, or for there to be a gap between them. . Both end surfaces of fixture 7 and bolt 8 or nut 9
A washer may be provided on the inner surface of the fixture 7, and the cloth may be fixed between both end surfaces of the fixture 7 and the washer.
The upper end of the cloth does not need to be attached to the cloth hanging rod of the pantograph arm as described above; instead, the upper end of the cloth 5 can be attached to the frame by connecting the upper end of the cloth with a string or the like, or by holding it between narrow boards. 1 may be suspended from the upper end of the fabric to prevent the fabric from falling when the fabric is separated after the fabric is finished. In addition, the fixture 7 has a diagonal cut 7a as shown in FIG.
It is also possible to make it easier to pass the cloth through the fixture 7 by providing one or two and connecting the cuts 7a with pins. Furthermore, the liquid B in the liquid chamber Q may be discharged from a plurality of liquid drain ports provided through the lower side of the frame 1, instead of being discharged from the lower ear part 3.

The embodiments described in FIGS. 1 to 3 above explain the basics of the present invention, but the main body of the present invention lacks the core plate portion of the conventional plate, wire mesh, and perforated plate. Therefore, depending on the type and concentration of the cake in the stock solution, as the filtration progresses, the cloth on both sides of the filtration body may come into close contact with each other, resulting in a decrease in the filtration efficiency. That is, as explained in FIG. 2, the stock solution A is transferred from the bolt 8 and nut 9 of the fixing device 7 to the stock solution chamber P formed between the adjacent overbody cloth.
2 of the excess body flows into the cloth and puts pressure on the cloth.
The liquid chamber Q formed between the two pieces of cloth may shrink and the two pieces of cloth may partially come into close contact with each other.

In order to prevent the above-mentioned cloth from partially adhering, the third
As shown in FIG. 4, it is preferable to provide several protrusions 11 between the cloths at positions away from the fixture 7. The protrusion 11 is made by closely holding two cylinders with flanges 11a and fixing two pieces of cloth 5 with pins 11b. The structure of the protrusion 11 is not limited to the above example. Further, a center tank 12 made of cloth, a thin plate, a wire mesh, etc. may be attached to the protrusion 11 separately from the cloth 5 to widely prevent the cloth from coming into close contact with each other. This center layer 12 may be attached directly to the inner surface of the fabric 5, omitting the projections 11.

(Effect of the invention) This invention forms a hollow part in the overbody and eliminates the core plate, wire mesh, perforated plate, etc. of the conventional board, so the weight is 1/5 to 1/5 of that of the conventional board. It is 1/10th lighter, easier to handle, and lower manufacturing costs. Moreover, it can be applied to a bulk body of any area.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of the fabric of the overbody of the present invention, Fig. 2 is a side view cut away along the - line of the overbody fabric arranged in parallel, and Fig. 3 is an example of an example in which protrusions are provided between the fabrics. 1 is a front view similar to that shown in FIG. 1, and FIG. 4 is a side view taken along the - line in FIG. 3. 1: Frame body, 1a: Hollow part, 5: Cloth, 6: Liquid passage hole, 7: Fixing tool, 11: Protrusion, 12: Center layer.

Claims (1)

[Scope of Claims] 1. Liquid passage holes are formed at corresponding positions in two pieces of cloth attached to both sides of a frame body forming a hollow part, and the peripheral edges of these two liquid passage holes are cylindrical. An overbody for a filter press, characterized in that it is fixed to both end faces of a fixture, and the peripheral edge of the fabric overlaps the fabric of an adjacent frame and is sandwiched between the frames. 2. An overbody for a filter press according to claim 1, wherein several protrusions are provided between two pieces of cloth attached to both sides of the frame. 3 Claim 2 in which the center layer is sandwiched between the protrusions
Excessive filter press described in section.