JPS5941763B2 - Filter press stock solution supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a filter press of the filter cloth running type 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 from a stock solution hole in a filter plate between a pair of filter cloths in a state where the filter plate is tightened.

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 supplied to a chamber formed in the following manner.

By the way, when the above-mentioned stock solution supply plate is used, since the liquid supply path is provided inside the plate, the stock solution remains in the through hole and the liquid supply path and blocks the liquid supply path. If the liquid supply path is made larger than the stock solution supply plate in order to prevent the passage from clogging, there is a problem that the stock solution supply plate cannot withstand the clamping pressure of the filtrate and is damaged.

Furthermore, since the stock solution supply plate is composed of a single plate, there is a problem in that it is difficult to repair a blocked solution supply path.

Furthermore, since the stock solution supply plate was tightened by a packing member that forms the stock solution hole in each filter plate when the filter plate was tightened, the position of the stock solution supply plate could not be determined, and the position of the stock solution supply plate could not be determined each time the filter plate was tightened. There was a problem in that the tightening pressure fluctuated and the sealing between the stock solution supply liquid and the packing member was poor, and the stock solution flowed outside the chamber.

The purpose of this invention is to solve the above problem,
The purpose is to prevent the liquid supply path from clogging as in the conventional stock liquid supply plate, and to withstand the tightening pressure of the filter plate.

Another object is to ensure the positioning of the stock solution supply device when tightening the filter plate.

In addition, the tightening pressure of the stock solution supply device against the filter plate is kept constant,
The objective is to improve the sealing performance between the filter plate and the packing member.

In short, the configuration of the present invention does not use the conventional stock solution supply plate made of a single plate, but instead allows the protruding portion of the spacer member provided on the filter plate to be connected to one side when the filter plate is tightened. The undiluted solution is passed through the inner and outer plates attached to the filter cloth and brought into contact with the inner plate of the inner plate and outer plate attached to the other filter cloth, forming a gap between the side inner plates. It is characterized in that it can be supplied into the chamber between the two parts of the cloth.

More specifically, an inner plate having a through hole is brought into contact with the surfaces of a pair of filter cloths sandwiched between adjacent filter cloths facing each other around each stock solution supply port, and the inner plate and the through hole are brought into contact with each other. While sandwiching the filter cloth with the outer plate having a mouth and tightening it with a fastening member,
Notches are provided on the outer peripheries of the through holes of the inner plate and the outer plate attached to one of the pair of filter cloths, and the cutouts are provided at a constant interval from each other in the circumferential direction. Cutouts are provided on the outer peripheries of the through holes of the inner plate and the outer plate at a constant interval from each other in the circumferential direction and which are shifted in phase from the inner plate and the outer plate of one of the filter cloths, and protrude from the end surface of the filter plate. A spacer member having notches extending in the axial direction and spaced apart from each other at regular intervals in the circumferential direction is provided in the portion, and when the filter plate is tightened, the protruding portion of the spacer member is attached to the one of the filter cloths. The inner plate and the outer plate are passed through the notches, and the end surface of the protruding portion of the spacer member is brought into contact with the part between the inner plate and the outer plate that are attached to the other filter cloth, thereby forming a gap between the side inner plates. A gap is formed in the filter plate, and the stock solution is passed through the stock solution hole in the filter plate, the through hole in the outer plate, the stock solution supply port in the filter cloth, and the through hole in the inner plate, and further through the gap between the side inner plates. It is characterized in that it is supplied between the pair of filter cloths.

Therefore, in the stock solution supply device according to the present invention, the passage for supplying the stock solution into the chamber is formed by the gap between the inner plates attached to the opposing faces of the filter cloth, and when the filter plate is opened, the passage between the inner plates is formed. The inner plates can be cleaned by widening them widely, and it is possible to reliably prevent the undiluted solution from remaining in the gap between the side inner plates and clogging it, and it is possible to smoothly supply the undiluted solution into the chamber. Repair and cleaning work can be easily performed, and the structure and assembly can be made simple.

Furthermore, the present invention provides a gap between the inner plates that are forcibly attached to the opposing surfaces of a pair of filter cloths by a spacer member provided on the filter plate, and also provides a gap between the inner plates and the filter cloth and the outer plate. By pressing and bringing them into close contact with the packing member of the filter plate through the inner plates, the inner plates and outer plates can be reliably positioned and sealed.

Furthermore, the present invention can prevent overload from being applied to the filter cloth by attaching inner and outer plates that are thinner and lighter than conventional original plate supply plates to the filter cloth.

Furthermore, in the present invention, there is no restriction on the liquid supply path for supplying the stock solution into the chamber, and the stock solution can be supplied from each through hole in the inner plate and the outer plate in any direction such as up, down, left, or right around the through holes. ,
It is possible to increase the rate of supply of the stock solution into the chamber and improve production efficiency.

Further, according to the present invention, by attaching an inner plate, an outer plate, etc. to each filter cloth, the movement of each filter cloth can be made smooth without being obstructed.

EMBODIMENT OF THE INVENTION Below, this invention is concretely demonstrated based on the Example of illustration.

As shown in FIGS. 1 and 2, a filter press equipped with a stock solution supply device according to an embodiment of the present invention has a filter cloth ω between adjacent filter plates 1, 1 when the frames of the filter plates 1, 1 are opened. Rod (not shown)
While a pair of filter cloths 2, 2 whose upper ends are supported by The stock solution is introduced between two filter cloths.

The stock solution supply device is generally composed of a spacer member 4 of each filter plate 1, and an inner plate 5 and an outer plate 6 attached to each filter cloth 2.

The upper part of each of the filter plates 1 is provided with a protruding part 1a that protrudes upward, and the protruding part 1a has a stock solution hole 1 that passes through the protruding part 1a.
6 is formed by a packing member 3 so that the stock solution can be supplied.

This packing member 3 is annular as shown in FIG. 3, and is provided with annular protrusions 3b on both sides.

A rigid spacer member 4 is fitted onto the inner circumferential surface 3a of the packing member 3.

As shown in FIGS. 4 and 5, this spacer member 4 is a cylinder that is longer than the thickness of the filter plate 1 and has notches 4c, . . . , 4c spaced apart from each other in the circumferential direction and extending in the axial direction. The protrusion 4a between the notches 4c and 4c is made to protrude further in the thickness direction of the filter plate 1 than the thickness of the filter plate 1.

Therefore, when tightening the filter plates 1, 1, the adjacent filter plates 1,
The protrusion 4a of the spacer member 4 of one of the filter plates 1
is inserted into the notch 4c of the spacer member 4 of the other filter plate 1, and the protrusion 4a of the other spacer member 4 is inserted into the notch 4c of one spacer member 4.

On the other hand, around the stock solution supply port on the opposing surface of the filter cloth 2, a relatively thin annular inner plate 5 is provided as shown in FIGS.
is in contact with.

This inner plate 5 has a through hole 5d that penetrates in its thickness direction and communicates with the stock solution supply port of the filter cloth 2, and the spacer is provided on the outer periphery of the through hole 5d at a constant interval from each other in the circumferential direction. A notch 5b into which the protrusion 4a of the member 4 can be fitted;
..., 5b are provided, and a threaded part insertion hole 5a is provided on the outer periphery.
..., 5a are provided.

In addition, around the stock solution supply port on the other side of the filter cloth 2,
The outer plate 6 is in contact with the outer plate 6 as shown in FIGS. 6 and 8.

This outer plate 6 is a relatively thin circular ring that is substantially the same as the inner plate 5, and the part that differs from the inner plate 5 is the screw insertion hole 5.
Instead of the threaded part a, only a threaded part 6a is provided as one of the fastening members that can be inserted into the threaded part insertion hole 5a.

That is, the outer plate 6 has a through hole 6d that penetrates in the thickness direction and has the same diameter as the through hole 5d of the inner plate 5.
Notches 6b, .

6b, and screw portions 5a, . . . , 6a are provided on the outer periphery.
has been established.

When attaching the inner plate 5 and the outer plate 6 to the filter cloth 2, one of the pair of filter cloths 2゜2 sandwiched between the filter plates 1 and 1 is attached to the inside from the opposing surface side of one of the filter cloths 2. The filter cloth 2 is brought into contact with the plate 5.
and the outer plate 6, each through hole 5d of the inner plate 5 and the outer plate 6,
6d and each notch 5b.

Each threaded part 6a of the outer plate 6 is inserted into each threaded part insertion hole a of the inner plate 5 so that the phases of the two screws 6b match each other, and then tightened with a nut 7 as the other fastening member.

For the other filter cloth 2 of the pair of filter cloths 2, 2, insert the inner plate 5 and the outer plate 6 in the same manner. However, the phases of the notches 5b and 6b of the inner plate 5 and outer plate 6 attached to the other filter cloth 2 are adjusted to the respective notches of the inner plate 5 and outer plate 6 attached to the one filter cloth 2. 5b, 6
The phase should be different from that of b.

Therefore, as described above, the stock solution supply device, which is roughly constituted by the inner plate 5 and outer plate 6 attached to each filter cloth 2 and the spacer member 4 of each filter plate 1, operates as follows.

In FIG. 2, when tightening the filter plates 1°1 shown by the two filter plates 1, 1 on the right side, as each filter plate 1 moves, the protrusion 4a of the spacer member 4 of one filter plate 1 The notches 5b of the inner plate 5 and the outer plate 6 are attached to one of the pair of filter cloths 2, 2 sandwiched between the filter plates 1.1, which is closer to one of the filter plates 1. , 6b and abuts on the notch 5b of the inner plate 5 attached to the other filter cloth 2, 5c between 5b, and the inner plate 5 is passed through the other filter cloth 2 and the outer plate 6 attached thereto. Press the packing member 3 of the other filter plate 1 to bring it into close contact.

Similarly, the protruding part 4a of the spacer member 4 of the other filter plate 1 is passed through the notches 5b and 6b of the inner plate 5 and outer plate 6 attached to the other filter cloth 2, and attached to one filter cloth 2. The inner plate 5 is pressed against the packing member 3 of one of the filter plates 1 via one of the filter cloths 2 and the outer plate 6 attached thereto.・Put it in close contact.

As a result, a gap 8 of a constant interval is formed between both inner plates 5, 5.

Then, the stock solution is passed through the stock solution hole 16 of one of the filter plates 1 to the outer plate 6.
The liquid is allowed to flow into the through hole 6d1 of one of the filter cloths 2 and the through hole 5d of the inner plate 5.

A portion of this inflowing stock solution is transferred to the gap 8 between both inner plates 5, 5.
From there, it is supplied into the chamber 15 formed between the pair of filter cloths 2, 2, and filtration is performed.

The remaining stock solution is supplied to the stock solution hole 16 of the adjacent filter plate 1 through the through hole 5d of the inner plate 5 on the other side, the stock solution supply port of the other filter cloth 2, and the through hole 6d of the outer plate 6.

On the other hand, as shown by the two filter plates 1 and 1 on the left side in Figure 2,
When opening the filter plates 1, 1, as the filter plates 1゜1 move, the protrusion 4a of the spacer member 4 of each filter plate 1 is moved against the inner plate 5 with which the protrusion 4a was in contact. The protruding portion 4a is further removed from the through holes 5d and 6d of the inner plate 5 and the outer plate 6, through which the protruding portion 4a has passed.

Then, at the same time as lowering the filter cloth hanging rod, for example, the cleaning operation is performed while winding up the filter cloths 2, 2.

At this time, the pair of filter cloths 2, 2 are wound in different directions below the filter plate 1, for example, by separate winding rollers, so that the distance between the pair of filter cloths 2, 2 is widened, and The distance between the plates 5 and 50 has increased, and both inner plates 5 through which the stock solution has circulated
, 5 can be easily and reliably cleaned, and it is possible to reliably prevent the gap 8 between both inner plates 5.5 from becoming clogged due to residual liquid.

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

For example, the filter plate 1 is not limited to an outside-filtering liquid supply type filter plate as shown in the figure, but may also be an in-filtration liquid supply type filter plate having concentrate holes in the filtration surface, or a compression type filter plate. good.

Further, in the above embodiment, the same inner plate 5 and outer plate 6 were attached to the pair of filter cloths 2, 2, respectively, and only the phases were different, but as shown in FIGS. 9 to 15, different may be installed respectively.

Hereinafter, parts similar to those in the previous embodiment will be denoted by the same reference numerals, and a description thereof will be omitted.

9 to 11 show an inner plate 9 and an outer plate 10 attached to one of the pair of filter cloths 2, 2.

The inner plate 9 shown in FIGS. 9 and 11 and the outer plate 10 shown in FIGS. The only difference is the shape.

That is, the inner plate 5 and the outer plate 6 are relatively thin plate materials having a semicircular upper portion and a rectangular lower portion.

On the other hand, FIGS. 12 to 14 show the inner plate 11 and outer plate 12 attached to the other filter cloth 2.

The inner plate 11 shown in FIG. 12.14 and the outer plate 12 shown in FIG. 11a, 1
The only difference from the inner plate 9 and outer plate 10 is that 1a is actually described, and the other structures are the same, and the same effects and operations are achieved.

Therefore, as shown in FIG.
When the inner plate 9 and the outer plate 10 are attached to the filter cloth 2, the inner plate 11 and the outer plate 12 are attached to the other filter cloth 2, and the ordinary filter plate 1 and the compressed filter plate 1' are tightened, the result is the same as in the above embodiment. Similarly, by pressing the protrusion 4a of the spacer member 4 under each filter plate 1 and each compressed filter plate against each inner plate 9, 11, both inner plates 9,
At the same time, the protrusion 11a of the inner plate 11 presses one filter cloth 2 against the other filter plate 1 to form a gap 8 between the inner plates 9 and 11, and the gap 8 is formed between the filter cloths 2 and 2 below between the inner plates 9 and 11. Furthermore, since the gaps 17 are forcibly formed at a constant interval, the stock solution can be more smoothly supplied into the chamber 15 by passing through the gap 17 from the gap 8 between the inner plates 9 and 11.

However, if the through holes in the inner plate and the outer plate are made smaller than the stock solution supply port of the filter cloth, the area around the stock solution supply port of the filter cloth can be protected and the flow rate of the stock solution can be adjusted.

Further, the through holes in the inner plate and the outer plate may be made gradually smaller from the stock solution supply side of the filter press toward the distal end thereof, so as to provide a narrowing gradient to the stock solution supply path.

However, instead of providing the notch in the spacer member, a groove may be provided.

That is, it may be a hollow spline shaft with grooves cut in the axial direction.

However, the shape of each inner plate and each outer plate, the shape of each notch, the spacer member, etc. are not limited to those of each of the above embodiments, and may be of any shape as long as it can produce the same effect. .

In any of the embodiments, the intended purpose can be achieved with a simple configuration as described above.

[Brief explanation of the drawing]

FIG. 1 is a front view of a main part of a filter plate of a filter press to which a stock solution supply device according to an embodiment of the present invention is applied, and FIG. 2 is a vertical cross-sectional side view of FIG. The two filter plates on the right side in Fig. 2 are vertical cross-sectional side views of the main parts showing the filter plates in their tightened state.
The figure is a vertical cross-sectional side view of the packing member in Figure 1, Figure 4 is a vertical cross-sectional side view of the spacer member in Figure 1, Figure 5 is a front view of the right half of the spacer member in Figure 4, and Figure 6 is a vertical cross-sectional side view of the packing member in Figure 1. Figure 2 is a front view showing the assembled inner and outer panels, Figure 7 is a partially cutaway side view of the inner panel, Figure 8 is a side view of the outer panel, and Figures 9 and 10. 11 is a partially cutaway side view of an inner plate and a side view of an outer plate showing other embodiments, respectively; FIG. 11 is a front view showing a state in which the inner plate and outer plate shown in FIGS. 9 and 10 are assembled; Section 12.1
Fig. 3 is a partially cutaway side view of the inner plate and side view of the outer plate showing still another embodiment, and Fig. 14 shows the assembled state of the inner plate and outer plate shown in Figs. 12 and 13, respectively. FIG. 15 is a sectional side view of main parts showing another embodiment of FIG. 2. 1... Filter plate, 2... Filter cloth, 3... Packing member,
4... Spacer member, 5, 9, 11... Inner plate, 6,
10°12... Outer plate, 7... Nut, 8... Gap, 15... Chamber.

Claims (1)

[Claims] 1. An inner plate having a through hole is brought into contact with the surfaces facing each other around each stock solution supply port of a pair of filter cloths sandwiched between adjacent filter plates, and the inner plate and an outer plate having a through hole are brought into contact with each other. and a notch having a constant interval from each other in the circumferential direction on the outer periphery of the through hole of the inner plate and the outer plate attached to one of the pair of filter cloths. and a notch part in the inner plate and outer plate of one of the filter cloths, which are spaced apart from each other in the circumferential direction on the outer periphery of the through holes of the inner plate and outer plate attached to the other filter cloth. A spacer member is provided in a portion protruding from the end surface of the filter plate having notches that are spaced apart from each other in the circumferential direction and extends in the axial direction, so that when the filter plate is tightened, , the protruding portion of the spacer member is passed through the notches of the inner plate and the outer plate attached to the one filter cloth, and the protruding portion of the spacer member is inserted into the part between the cutouts of the inner plate and the outer plate attached to the other filter cloth. The end faces of the protruding portions of the spacer members are brought into contact to form a gap between the inner plates, and the stock solution is transferred to the stock solution hole of the filter plate, the through hole of the outer plate, the stock solution supply port of the filter cloth, and the A stock solution supply device for a filter press, characterized in that the stock solution is supplied between the pair of filter cloths through a through hole in the inner plate and further through a gap between the side inner plates.