JPS6158206B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a filter press that runs a cloth and discharges cake downward.

Various kinds of filter press cake peeling devices have been devised, and a typical one is a cloth running type.

The ones shown in FIGS. 1 and 2 are among the most commonly used. The one shown in Figure 1 peels off the cake by running an endless cloth 01 in a diagonal pattern, and the one shown in Figure 2 uses a plate 01 to peel off the cake.
2 or hydraulic plates 02' Endless cloth for each stage 0
1 is run around the board 02. These are opposed plates 02 or hydraulic plates 02'
Each pair of fabrics 01 is made of two pieces of cloth 01 between them, and these fabrics 01 are made of relatively thick and durable cloth with emphasis on strength for the purpose of applying high pressure, squeezing, and running mechanically. Currently, 01 is used. Using thick cloth 01 is the original purpose of the filter press. Effective dehydration
This has the exact opposite effect from smooth cake peeling. Multifilament cloth is commonly used as the thick cloth 01, but this generally has fine mesh and poor dewatering efficiency, and also has drawbacks such as strong cake adhesion and poor peelability.

Therefore, the present invention was made with the object of providing a filter press that can be applied to a cloth traveling type filter press with a thin monofilament cloth that has a high processing speed (effective dehydration) and excellent cake releasability. In a filter press consisting of a plate or a plate and a hydraulic plate, reversing rollers are arranged at least above and below the plate,
An endless filter cloth is formed by connecting a front filter cloth made of monofilament filter cloth and a back filter cloth whose mesh is coarser than that of the front filter cloth, and the same endless filter cloth is placed in front of the filtering surface of the filter plate. The front filter cloth and the back filter cloth are freely runnable around the reversing roller so that the two sheets are overlapped with the same back filter cloth on the inside, and the endless filter cloth is placed in the vertical direction of the filter plate. It is characterized by being equipped with a means for running it, and consists of two types of cloth tied together endlessly and passed around a roller, with a monofilament cloth with good permeability placed on the top side and a coarser cloth placed on the back side. It is a filter press that can be used as a reinforcing material, and can improve permeability and cake releasability by running the cloth using an endless shape.

Next, the present invention will be specifically explained based on an embodiment shown in FIGS. 3 and 4.

In a filter press in which a plurality of plates are arranged so as to be openable and closable, a pair of reversing rollers 2 facing each other is provided on the upper part of the plate 1, and a pair of reversing rollers 2 is similarly attached to the lower part of the plate 1. 3 is dehydrating;
The outer fabric is made of monofilament cloth with excellent releasability, and the lining fabric 4 is a coarse mesh cloth used for the purpose of reinforcing the outer fabric 3. The outer fabric 3 is sewn to the lining fabric 4 at the upper and lower parts, respectively, so as to be connected in an endless manner, and is then passed around the upper and lower reversing rollers 2. A bag-shaped part for passing the cloth bar 10 is provided at a suitable place at the bottom of the lining cloth 4 (the outer cloth 3 may be used, but in that case it will be at a suitable place at the top), and both ends of the cloth bar 10 passed through this are provided. is attached to a guide block 8 which is guided by a guide rail 11 and is movable up and down via a telescopic member (for example, a plate spring) (not shown). A slide block 6 (which may be a roller) is attached to the outer end of the guide block 8, and is inserted into a pair of lifting beams 7 that move up and down so that it can slide laterally. The elevating beam 7 is connected to an elevating drive device (not shown).

After the dehydration is completed, when the cloth 1 is opened, it becomes as shown in FIG. 3, and the dehydrated cake is attached to either the left or right surface of the outer cloth 3. When the pair of lifting beams 7 are simultaneously moved upward by a drive device (not shown), the fabric bar 10 is moved upward via the guide block 8 and the backing fabric 4 is pulled up.As a result, the outer fabric 3 is pulled down via the lower reversing roller 2. It will be done. Further, the backing cloth 4 is pulled up via the upper reversing roller 2 by the pulling-down operation of the outer cloth 3.

Therefore, the outer fabrics 3 on the same plate are rotated in a direction toward each other by the lower reversing roller section 2, and the dehydrated cake is peeled off by the bending of the reversing roller 2 when passing through the lower reversing roller 2. Fall. When the elevating beam 7 reaches the upper limit, it moves back and returns to the starting position. Further, since the guide block 8 is connected to the fabric bar 10, it moves up and down without meandering, and serves to prevent the fabric from steering.

Conventional cloth running type filter presses prioritize strength at the expense of dehydration and cake removability, and use thick, durable cloth. Relatively thin monofilament cloth, such as monofilament cloth, which has good cake releasability, can be used for the cloth running type, and leakage of stock solution from the pressure contact surface of the plate, which can be said to be the fate of filter presses, can be avoided by stacking two cloths (4 cloths in total). This can be prevented by increasing the seal effect.

Although the present invention has been described in detail based on one embodiment, the present invention is not limited to this embodiment. It can also be applied to a double filter press consisting of a frame.

[Brief explanation of the drawing]

Fig. 1 and Fig. 2 are diagrams showing a conventional filter press, Fig. 3 is a diagram showing an embodiment of the present invention, and Fig. 4 is a diagram showing a conventional filter press.
The figure is a view taken along the line BB in FIG. 3. 01... Endless cloth, 1,02... Board,
2... Reversing roller, 3... Outer fabric, 4... Lining fabric, 6... Slide block, 7... Lifting beam, 8... Guide block, 10... Cloth bar,
11...Guide rail.

Claims (1)

[Claims] 1. In a filter press consisting of a filter plate or a filter plate and a hydraulic plate, reversing rollers are arranged at least above and below the filter plate, and a front filter cloth made of a monofilament filter cloth and a back filter cloth with a coarser mesh than the front filter cloth are arranged. are connected to form an endless filter cloth, and two pieces of the endless filter cloth are stacked in front of the filtering surface of the filter plate, with the same front filter cloth and the same back filter cloth, with the same back filter cloth inside. A filter press characterized in that the filter press is provided with a means for freely running the endless filter cloth around the reversing roller so that the endless filter cloth runs in the vertical direction of the filter plate.