JPH0323289Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to a filter press plate, particularly a plate in which a mesh plate is provided in place of the core plate of the filter press plate.

(Prior art) The plate of a conventional filter press is formed from a frame part on the periphery of the plate and a core plate part with an uneven surface, so 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 plates are provided on both sides of a hollow frame that lacks a core board and only has a frame part (Utility Model Publication No. 19987-1998, Utility Model Number 35-1998). 20077, Utility Model Publication No. 57-51051, and Utility Model Number 57-57767).

(Problems to be solved by the invention) The above-mentioned known plates are all provided with two wire meshes on both sides of the board, and the back sides of the two wire meshes or perforated plates are joined together, or Since the wire mesh is formed by stretching wire over the pins planted in the step, it is easy to attach and remove the wire mesh when changing the material or mesh of the wire mesh or perforated plate, or replacing it due to partial damage. It takes a lot of effort.

(Means for Solving the Problems) This invention is based on a frame body in which a stepped portion is formed on the inner periphery of the frame portion, the thickness of which is smaller than that of the frame portion, and a hollow portion is formed on the inner periphery of the stepped portion. In a filter press plate in which a mesh plate is fixed to a stepped portion on at least one side, the mesh plate has a number of holes penetrated in the width direction of the opposing mesh frame, and threads pass from the hollow portion through the holes. This is a plate for a filter press, characterized in that it is extended along the outer circumferential surface of the mesh frame, through adjacent holes, across a hollow part, and through the holes in the opposing mesh frame.

The shape of the frame is rectangular or circular,
It may be a side feed type with a stock solution supply port and a solution discharge port provided on the edge, or it may be a side feed type in which a stock solution supply port and a solution discharge port are provided at the edge of the frame. It may also be of a center feed type (see Japanese Utility Model Publication No. 57-57767) in which the feeder is supported at approximately the center of the feeder. The mesh board may be one in which the threads of the wire or synthetic fiber of the mesh frame are stretched in the vertical or horizontal direction, or in which the threads are crossed in the vertical or horizontal directions. The diameter of the thread is 1 to 3
mm, and the yarn spacing is preferably 5 to 10 mm. The spacing between the threads may be such that the upper part of the rectangular shape is larger and the lower part is smaller (see Japanese Utility Model Publication No. 57-51051).
In the case of a circular shape, the spacing between the threads is large at the outside and small at the center (see Japanese Utility Model Publication No. 57-57767). The above mesh plate is fixed to one or both sides of the step. When fixed on both sides, the threads on both sides may be in the same direction or may be in different directions.

The key point of this idea is that when the mesh plate is square, a large number of holes are provided in the width direction of the opposing mesh frames, and the threads are passed through the hollow part through one hole in one of the mesh frames. By passing the yarn across the opposite hole in the other mesh frame, passing it through the next adjacent hole along the outer circumferential surface of the screen frame, and repeating this operation sequentially to spread the thread in the mesh frame. be.

(Example) In FIGS. 1 and 2, the frame 1 has a semicircular protrusion 1a formed at the center of the upper edge, and the inner periphery of the frame 2 on the entire outer periphery of the frame 1. A stepped portion 3 having a thickness smaller than that of the frame portion 2 is formed in the step portion 3, a rectangular hollow portion 4 is formed on the inner periphery of the stepped portion 3, and an undiluted solution is formed in the stepped portion 3a of the protruding side portion 1a. A supply hole 5 is provided therethrough. On both sides of the stepped portion 3, mesh plates 6A and 6B having the same shape as the stepped portion are fixed. One of the mesh plates 6A shown in FIG.
Holes 8a and 9a are provided through the holes 8a and 9a, one wire 10 passes downward through the hole 8a of the upper frame part 8, crosses the hollow part, penetrates the hole 9a of the lower frame part 9, and passes through the hole 9a of the lower frame part 9. Penetrate upward through the next hole 9a along the lower surface, cross the hollow part, penetrate the next hole 8a of the upper frame part 8, and pass through the next hole 8a along the upper surface of the upper frame part 8. By passing through the wire 10, the wire 10 is stretched in parallel in the vertical direction. A mesh plate 6B fixed to the other surface of the stepped portion 3
is shown in FIG. 4, holes 11a and 12a are provided through the opposing left and right frame portions 11 and 12 of the mesh frame 12, respectively.
The book wire 13 is stretched parallel to the left and right directions. The mesh plates 6A and 6B are fixed to both sides of the stepped portion 3 of the frame body 1 by passing screws through screw holes 14 formed in the left and right sides of the mesh frames 7 and 12.

What is shown in Fig. 5 is a wire 10 with a thin wire 10
A is wound spirally, and in this case, the distance between the cloths becomes wider, which improves the drainage performance of the liquid. It has the same level of liquid drainage effect as the one installed on both sides of part 3.

Note that reference numeral 15 shown in FIG. 1 is a liquid discharge port that is provided through the protrusions on both sides of the frame 1 and opens to the inner circumferential portion of the frame 1.

Each cloth 16 hung on the board has the stepped portion 3
Cloth gripping plates 17 each having a hole 17a corresponding to the stock solution supply hole 5 in a are attached with screws, and several protrusions 17b are protruded from the opposing outer surfaces of the opposing cloth gripping plates 17. When the frame portion 2 of the cloth gripping plate 17 is brought into close contact, the tips of the protrusions 17b of the cloth gripping plate 17 come into contact with each other, so that the inner surface of the cloth gripping plate 17 is pushed into the stepped portion 3a through packing.
The cloth 16 is brought into close contact with the net plates 6A and 6 by the pressure of the stock solution supplied between the two facing cloths 16.
It is extended closely to the B side. And stock solution supply hole 5
The stock solution supplied to the space between the cloths 16, 16 is passed through the cloths 16, 16, and is passed through the mesh plates 6A,
6B and is discharged from the liquid outlet 15, and the solid content in the raw liquid is deposited as a cake between the cloths 16, 16.

(Effect of the invention) With this invention, it becomes easy to attach and detach the mesh plate to the hollow part of the frame. Therefore, it is possible to easily change the material of the mesh plate, or to replace the mesh plate when a part of the mesh plate is damaged, as necessary.

[Brief explanation of drawings]

Fig. 1 is a front view of an embodiment of this invention, Fig. 2 is a side view cut vertically from the center of Fig. 1, Fig. 3 is a front view showing one example of the mesh plate, and Fig. 4 is another example of the mesh plate. FIG. 5 is a partially cutaway side view of still another example of the net. 1: frame, 2: frame, 3: step, 4: hollow, 5: stock solution supply hole, 6A, 6B: mesh plate, 7: mesh frame, 8a, 9a, 11a, 12a: hole, 10, 1
3: wire, 16: cloth.

Claims (1)

[Scope of utility model registration request] A filter in which a step part is formed on the inner periphery of the picture frame part, the thickness of which is smaller than that of the picture frame part, and a mesh plate is fixed to the step part on at least one side of the frame body, which has a hollow part formed in the inner periphery of the step part. In the press plate, the mesh plate has a large number of holes extending through the opposite mesh frames in the width direction, and threads pass from the hollow part through the holes and pass through adjacent holes along the outer peripheral surface of the mesh frame. A plate for a filter press, characterized in that it extends across a hollow part and passes through holes in opposing mesh frames.