JPH046804Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The invention of the present application prevents cracking of the filter plate by fixing the filter plate protrusions on the stock solution holes of the concave filter plate through the filter cloth. This invention relates to a filter press that can safely perform compression.

Prior Art An annular stock solution supply fitting having flanges that touch each other in the axial direction is inserted into a stock solution hole penetrating the filter bed of a filter plate when the filter press is closed, and the metal fitting on the adjacent filter plate is inserted into the stock solution hole penetrating the filter bed of the filter plate. There is a filter press in which a passage groove leading from the inside of the ring to the filtration bed is carved on the flange surface that contacts with the flange, and the stock solution is distributed and introduced onto the filtration bed through the passage groove.

Problems to be Solved by the Invention However, the annular stock solution supply fitting with a flange part has a thread cut in the annular part to be inserted into the stock solution supply hole of the filter plate, or a number of screws are cut around the periphery of the stock solution supply hole of the filter plate. Two screw holes are drilled, these screw holes are aligned with the screw holes drilled in the metal fitting, and tightening bolts are passed through both screw holes to tighten the supply metal fitting to the filter plate. The annular part of the metal fitting needs to be molded to match the stock solution hole in the filter plate, and the grooves formed on the flange surface between adjacent filter plates should be opposed to each other and fixed to the filter plate. There is also the inconvenience of handling work. The present invention eliminates the drawbacks of the conventional filter press equipped with a stock solution supply fitting, and also simplifies the structure, prevents the filter plate from cracking due to the pressure applied to the filter plate during filtration and compression, and safely holds the filter plate. This is intended to provide a filter press that can.

Means for Solving the Problems The present invention has a filter plate of a concave plate type filter press with a thick frame-like peripheral edge and a filter bed surrounded by the peripheral edge through which the stock solution hole is penetrated.Filter cloths are hung and arranged in a tightening device. In a filter press that pressure-polymerizes and opens the filter plate rows, filter plate protrusions are placed over the filter cloths on the filter beds on both sides of the filter plate through part of the filter cloth stock solution holes, and The filter plate protrusions are fixed together with a fastener passed through the stock solution hole, and the top surfaces of the filter plate protrusions are brought into contact with the periphery of the stock solution hole of the adjacent filter plate through the filter cloth, and press polymerization is carried out. This is a filter press characterized by sequentially arranging the filters so as to

Further, the filter plate may be a filter plate of a concave type compressed filter press provided with a compressed membrane or a filter plate of an ordinary concave type filter press.

Further, the filter plate to which the filter plate projections are fixed may be a compressed filter plate, and the filter plate adjacent thereto may be a normal filter plate.

Furthermore, the filter plate protrusions are applied to the filter cloths on the filter bed on both sides of each filter plate, and the filter cloths are passed through a part of the filter cloth stock solution hole and passed over the filter plate protrusions of the adjacent filter plates. It may also be a filter press in which filter plates are arranged so that the top surfaces of the filter plates are in contact with each other and press-polymerized.

Effect: Since the present invention is constructed as described above, the pressure applied to the filter plate due to filtration and squeezing is canceled out, especially between the edges of the filter plate stock solution holes, thereby preventing the filter plate from cracking during filtration work and safely holding the filter plate. be able to. Further, the filter plate protrusions can be easily attached to the filter plate because they are fixed by passing through a part of the filter cloth stock solution hole. Furthermore, when the filter plate protrusions are fastened, it is not necessary to accurately align the filter plate protrusions on both sides, thereby making the above-mentioned installation work easier.

EXAMPLE The present invention will be explained in detail using figures. In FIGS. 1 and 2, 1 is an ordinary filter plate, 2 is a compressed filter plate, and 3 is a compressed membrane that covers both sides of the compressed filter plate 2.
4 and 4 are stock solution holes opened in each of the filter beds of the normal filter plate 1 and the compressed filter plate 2, 5 is a filter cloth, and 6 is a filter cloth that covers both sides of the filter plate, and is inserted into the stock solution hole of the filter plate. This is the filter cloth stock solution hole connected with. 7 is the periphery of the filter plate stock solution hole;
Its cross section is V-shaped or U-shaped. Reference numeral 8 denotes a rod-shaped filter plate protrusion, which is stretched between the front and back surfaces of the filter plate stock solution hole periphery 7 on which the filter cloth 5 is hung, with the filter cloths 5, 5 interposed therebetween. Two holes are made in each of the positions above the stock solution holes of the filter plate protrusion 8, and bolts 9,
9, and the filter plate protrusions 8, 8 are fixed onto the filter cloth. The stock solution holes 4 of the compressed filter plate 2 shown in FIG. 2 are formed of the squeeze membrane 3, and a concentric stock solution hole opening degree adjusting member 10 is fitted inside thereof. The pressing filter plate 2 extends somewhat beyond the area of the stock solution hole opening adjustment member 10, and has filter plate protrusions 8, 8 fixed thereto. When the filter plates 1 and 2 are tightened, the filter plate protrusions 8 and 8 are
As shown in FIGS. 3 and 4, the top surfaces thereof abut against the peripheral edges 7, 7 of the stock solution holes of the adjacent filter plates 1, 2 via the filter cloths 5, 5, respectively, and are press-polymerized. Figure 3 shows the first
Figure 1 X-X line and Figure 2 Y-
It is an enlarged cross-sectional view along the Y line, and the filter plate protrusions 8, 8 are fixed to the compressed filter plate 2, and the top surfaces of the filter plate protrusions 8, 8 are adjacent to the periphery 7 of the stock solution hole of the ordinary filter plate 1, 7, and FIG. 4 is an enlarged view corresponding to FIG. 3 in a state where the filter plates 1 of FIG. 1 are overlapped and tightened.
The rod-shaped filter plate protrusions 8, 8 are fixed to the ordinary filter plates 1, 1, and the top surfaces of the filter plate protrusions 8, 8 are brought into contact with the periphery of the stock solution hole of the adjacent ordinary filter plates 1, 1, and press polymerization occurs. They are arranged sequentially so that In addition, the rod-shaped filter plate protrusions 8 and 8 may be fastened to each other with bolts and nuts, for example, as shown in FIGS.
Alternatively, the box shape may be fixed to the other filter plate protrusion 8 by providing a protrusion that fits into the box shape and fitting the two together. In short, the means for fixing the filter plate protrusion 8 is not limited to the example shown, as long as it does not deviate significantly from its fixing position. Further, in FIGS. 7 and 8, the filter plate protrusion 8 is fan-shaped, and a part of the filter plate protrusion 8 is hooked into the filter cloth stock solution hole 6, and is fastened together with a part of the same filter plate protrusion on the opposite side. The top surfaces of both fan shapes above the filter cloth stock solution holes are brought into contact with the periphery of the stock solution hole of the adjacent filter plate through the filter cloth, respectively, and polymerized by pressure. FIG. 8 shows the fan-shaped filter plate protrusion 11 cut along the line W--W in FIG. 7. The fixing position of the filter plate protrusions 11 may be determined by rotating as appropriate within the filter cloth stock solution hole. Further, the filter plate to which the filter plate protrusions are fixed may be a normal filter plate or a compressed filter plate. In addition, FIG. 9 shows that filter plate protrusions 8, 8 are placed over the filter cloths 5, 5 on the filter beds on both sides of each filter plate 1, respectively, through a part of the filter cloth stock solution hole 6, and each filter is Board 1,
At each step, the filter plate protrusions 8, 8 on both sides are fastened together, and the top surface of the filter plate protrusion 8 on one side is brought into contact with the top surface of the filter plate protrusion 8 on one side of the adjacent filter plate 1. They are arranged in order so that they can be polymerized under pressure. In this example, since the height of the filter plate protrusions 8 divides the filter chamber space into two, it is used when cake tends to adhere to the stock solution hole area, and is used when the filter plate protrusions are fixed to every other filter plate. Reduce the amount of cake adhering compared to the case. The filter plate projections 8 include those having a rectangular or round cross section, or having an uneven step formed on a flat plate or top surface so that the liquid flows through the step. Further, the length of the filter plate protrusion 8 may be such that it extends beyond the periphery of the filter plate stock solution hole and onto the filter bed covered with the filter cloth. Furthermore, the material of the filter plate protrusions may be synthetic resin such as polypropylene, reinforced plastic, metal, or other wood materials. Further, the filter plate protrusions are appropriately selected depending on the pressure of filtration and squeezing or depending on the material strength of the filter plate. Further, as a fastening tool, in addition to bolts, wire may be used to bind the filter plate protrusions on both sides. Further, the fixing points for both filter plate protrusions are set at one or several places to facilitate fixing and removal.

The filter press configured as described above connects the stock solution supply side of the filter plate row with a stock solution supply source (not shown) through piping, supplies the stock solution between the filter plates as usual, performs filtration and compression, and then Open and drain the cake. During the filtration and squeezing process, the filter plate remains safe without being deformed or damaged.

[Brief explanation of the drawing]

Fig. 1 is a front view of the ordinary filter plate of the filter press according to the present invention, Fig. 2 is a front view of the same press filter plate, and Fig. 3 is a front view of the ordinary filter plate of the filter press according to the invention.
The diagrams show line X-X in Figure 1 and line Y in Figure 2 when the filter plates in Figures 1 and 2 are overlapped and tightened.
-Y line sectional view, Fig. 4 is a sectional view equivalent to Fig. 3 in a state where the filter plates in Fig. 1 are overlapped and tightened, Fig. 5 is a front view of main parts in another example, Fig. 6 is FIG. 5 is a central sectional view, FIG. 7 is a front view of main parts on the other side, FIG. 8 is a central sectional view of FIG. 7,
FIG. 9 is a sectional view corresponding to FIG. 4 in yet another example. 1... Ordinary filter plate, 2... Pressed filter plate, 3... Squeezed membrane, 4... Stock solution hole, 5... Filter cloth, 6... Filter cloth stock solution hole, 7... Filter plate stock solution hole periphery, 8...filter plate projections,
9...Boruto Natsuto.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A filter plate 1 of a concave filter press with a thick-walled frame-like peripheral edge and a filter bed surrounded by the peripheral edge penetrates the stock solution holes 4, and filter cloths 5 are hung and arranged; In a filter press that presses and polymerizes the filter plate arrays using a tightening device and then opens the plates, filter plate protrusions 8, 8 are provided on the filter cloths 5, 5 on the filter beds on both sides of the filter plate 1, respectively, and filter cloth stock solution holes 6 are provided. The filter plate protrusions 8, 8 on both sides are fixed together with the fasteners 9 passed through the stock solution holes 4, and the top surfaces of the filter plate protrusions 8, 8 are respectively A filter press characterized in that the filter presses are sequentially arranged so as to contact the periphery of the stock solution hole 7 of the adjacent filter plate 1 via filter cloths 5, 5 so as to be press-polymerized. (2) The filter plate 1 that fixes the filter plate protrusions 8, 8 is a compressed filter plate 2 of a concave filter press equipped with compressed membranes 3, and the filters on the compressed membranes 3 on both sides of the compressed filter plate 2 are 2. The filter press according to claim 1, wherein filter plate protrusions 8, 8 are stretched over the cloths 5, 5, respectively, through part of the filter cloth stock solution hole 6. (3) The filter plate 1 to which the filter plate protrusions 8, 8 are fixed is an ordinary filter plate 1, and the filter plate protrusions 8, 8 are attached to the filter cloths 5, 5 on the filter bed on both sides of the ordinary filter plate 1, respectively. of,
2. The filter press according to claim 1, wherein the filter cloth is stretched through part of the filter cloth stock solution hole 6. (4) The filter plates 1 of the concave filter press, which has a thick frame-shaped periphery and the filter bed surrounded by the periphery, pass through the stock solution holes 4, are hung with the filter cloths 5 and arranged. In a filter press that press-polymerizes and opens the plate, the filter plate is a compressed filter plate 2 having a compressed membrane 3, and filter plate protrusions are attached to filter cloths 5, 5 on the compressed membranes 3 on both sides of the compressed filter plate 2, respectively. 8,8
is passed through a part of the filter cloth stock solution hole 6,
The filter plate protrusions 8 and 8 on both sides are fixed together with a fastener 9 passed through the stock solution hole 4, and the compressed filter plate 2
The top surfaces of the filter plate projections 8, 8 are the filter cloths 5, 5, respectively.
An ordinary filter plate 1 adjacent to the compressed filter plate 2 via
A filter press characterized in that the filter presses are sequentially arranged so as to contact the peripheral edge 7 of the stock solution hole and press polymerize. (5) The filter plates 1 of the concave filter press, which has a thick frame-like peripheral edge and the filter bed surrounded by the peripheral edge, have the stock solution holes 4 penetrated, and the filter cloths 5 are hung and arranged, and a tightening device is used to tighten the filter plates in the rows. In a filter press that press-polymerizes and opens the plate, filter plate protrusions 8, 8 are hung on the filter cloths 5, 5 on the filter beds on both sides of the filter plate 1, respectively, through a part of the filter cloth stock solution hole 6. The filter plate protrusions 8, 8 on both sides are fixed together with the fasteners 9 passed through the stock solution holes 4, and the top surfaces of the filter plate protrusions 8, 8 and the filter adjacent to the filter plate 1 are Filter plate projections 8 are attached to the filter cloths 5, 5 on the filter beds on both sides of the plate 1, respectively.
8 is passed through a part of the filter cloth stock solution hole 6, and the filter plates 8 and 8 on both sides are fastened to each other with a fastener 9 that passes through the stock solution hole 4. A filter press characterized in that the plate protrusions 8, 8 are sequentially arranged so that the top surfaces of the plate protrusions 8, 8 are in contact with each other and press-polymerized.