JPS5944886B2 - filter press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for separating a stock solution into a filtrate and a P filter by P filtration or press filtration.
The present invention relates to a filter press that separates into residues, and in particular, to an improvement of a furnace liquid stripping device for furnace cloth used for each furnace plate or pressing furnace plate.

Conventionally, in a furnace cloth traveling type filter press, in order to filter the raw liquid and collect the furnace liquid adhering to the furnace cloth when the frame of the filter press is opened, a take-up roller that winds up the saw cloth or the take-up roller is used. There is a known method in which a P residue peeling member such as a scraper is brought into contact with the surface of the furnace cloth that is curved along the surface of a guide roller that guides the furnace cloth to scrape off the tear fluid from the furnace cloth. It is being

However, when scraping p residue from the furnace cloth with a scraper or the like as described above, as the scraper runs between the lacrimal residue attached to the furnace cloth and the furnace cloth, the furnace liquid is removed without scraping the surface of the furnace cloth. Since it is peeled off, the surface of the furnace cloth is easily damaged by the scraper. The drawback was that it shortened the lifespan of the cloth.

In view of the above problem, the present inventor provided a p-residue peeling member made of a pair of plate-like members between which a slit passage through which the furnace cloth passes is provided between a pair of support frames supported below the furnace plate. , previously filed an application for a filter press in which a wedge-shaped edge portion was formed on the upper edge of one plate-like member that slidably contacts the surface side of the furnace cloth.

However, since the P residue peeling member was fixed within the thickness of the furnace plate so as not to interfere with the tightening of the furnace plate, the running path of the furnace cloth was slightly bent inside the furnace plate. The outer surface of the oven cloth is rubbed by the edge of the upper edge of the plate-like member of the lacrimal peeling member,
There was a problem that the furnace cloth wore out during long-term use.

Therefore, in the present invention, the slit of the P residue peeling member through which the furnace cloth passes is positioned in the substantially vertically downward running path of the furnace cloth when the furnace plate is opened, that is, when the furnace cloth is running, so that the furnace cloth can be reliably removed. The purpose is to provide a filter press that can prevent wear.

The filter press according to the present invention includes a pair of p-residue peeling members supported below the furnace plate, which are composed of opposing members forming slits through which the furnace cloth passes, and peel off lachrymal residue adhering to the furnace cloth. A pair of elastic springs are provided above the furnace cloth take-up roller between the support frames in the front-rear direction of the furnace plate, and when the furnace plate is opened, the springs are Due to the biasing force, the slit is placed on the substantially vertically downward running path of the furnace cloth, and when the furnace plate is tightened, the spring contracts and is housed within the thickness of the furnace plate. It is characterized by

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

In the filter press shown in FIG. 1, 1 is a front stand supporting a main plate 2, 3 is a rear stand, 4.4 is a front stand,
5. Side beam passed to husband between both sides of rear stands 1 and 3. . . , 5 are connected to each other by connecting links 6.6, and are moved in the front and back direction with a pair of handles 5a provided on both sides slidably placed on the side beams 4, 4. The heated furnace plate, 7 is the rear stand 3
When the movable plate 7 is moved backwards and forwards by a driving piston 8 supported by a drive piston 8, when the movable plate 7 is moved backward to the retreat position A shown by the imaginary line in the figure, the movable plate 7 moves at a predetermined interval determined by the connecting link 6.6. Each furnace plate 5 can be opened at the same time.

On the other hand, 9 and 9 are a pair of left and right drive shafts having a polygonal cross-section and bearing between the upper sides of the front and rear stands 1 and 3, respectively.
As shown in FIG. 2, a pair of left and right winding boos are rotatably supported on both sides above the oven plate 5 by support members 10.10 attached to the upper part of each oven plate 5! J 11 and 11, respectively, and by the forward and reverse drive of a motor 13 with a reducer installed on a mounting base 12 attached to the upper part of the rear stand 3, a pair of left and right The drive shaft 9°9 can be driven forward or backward.

The winding boo on the left and right above! , ) 11 , 11 is a connecting fitting in which a hanging cord 15 whose one end is secured to each winding boot 911 is wound around, and the other end is attached to the end of a P cloth hanging rod 17 that suspends and supports a furnace cloth 16. It was concluded on the 18th.

A pair of left and right support fittings 19 and 19 projecting downward are provided on the lower surface of the p-frame of the furnace plate 5, and the support fittings 19
, 19, a furnace cloth take-up roller 20 is attached.

As shown in FIGS. 1 and 3, the winding roller 20 has front and rear filter surfaces 5b, 5 provided on both sides of the furnace plate 5.
Two furnace cloths 1616-1 and 16-, respectively covering b.
The two end portions are latched and fixed to the take-up roller 20.

As shown in FIG. 4, the take-up roller 20 has a support shaft 21 fixed to the lower part between the support fittings 19, 19 so as to be non-rotatable.
This l roller 20 is a cylindrical hollow roller with bearings rotatably at both ends, and a coil-shaped torsion spring (not shown) whose both ends are respectively locked to the take-up roller 20 is mounted on a support shaft 21. The spring force of this torsion spring always moves the winding roller 20 in the direction of rotation for winding up the furnace cloths 16-1 and 16-2. I'm trying to give it a boost.

Moreover, a pair of Okisho peeling members 26 are provided on the upper part of the pair of support fittings 19, 19, with a slit 25 formed between the pair of plates of the outer plate 23 and the inner plate 24, with the supports 22 and 22 interposed therebetween. ing.

The outer plate 23 is an elongated thin plate that is longer than the width of the furnace cloth 16, and as shown in FIG. This forms an edge portion 23a.

On the other hand, the inner plate 24 is an elongated thin plate having approximately the same length as the outer plate 23, and has approximately the same thickness as the furnace cloth 16 at both ends on the outer surface side, as shown in FIG. thin plate 2
7.27, attach the outer plate 23 to the bolts 28. ...
, 28 to form a slit 25 between the outer plate 23 and the inner plate 24, through which the furnace cloth 16 passes.

In addition, in the inner plate 24, the upper and lower edges of the portion where the slit 2 is formed, leaving both ends, are respectively inclined obliquely downward from the outside to the inside with respect to the furnace plate 5, as shown in FIG. Upper edge part 24a and lower edge part 2 for the furnace cloth guide
4b, a disc-shaped protrusion 24c for interposing a spring 29 is provided on the inner surface of each end, and each end is bent one step inward in the longitudinal direction. A retaining portion 24d that extends is provided.

The support body 22 has its outer surface fixed to the inside of the support frame, and is provided with a recess 22a on its inner surface in which the engaging portion 24a is fitted movably in the front-rear direction of the furnace plate 5.
An engaging portion 24d of the inner plate 24 is engaged in the inner plate 2a so as to be movable in the front-rear direction of the furnace plate 5.

Therefore, the pair of resin peeling members 26.26 have the inner plates 24.24 facing each other and the respective protrusions 24c.

It is provided between the pair of support frames 19, 19, with a spring 29 fitted between each of the support frames 24C and each engagement portion 24d engaged in the recess 22a of the support body 22.

When the furnace plate 5 is opened, as shown by B in FIG.
d is placed against the inner wall surface of the recess of each support 22, and the slit 25 of the furnace liquid peeling member 26 is positioned in the substantially vertically downward running path of the furnace cloth 16, so that the furnace cloth 16 runs extremely smoothly. and both plates 2 of the furnace scum peeling member 26 on the furnace cloth surface.
The edges 23a and 24a of the upper edges of the parts 3 and 24 are designed to prevent damage.

Note that when each furnace cloth 16 moves downward, the furnace liquid 3
The edge portion 23a of the outer plate 23 of the furnace liquid peeling member 26 bites between the furnace cloth 16 and the P residue 34 adhered to the furnace cloth 16, so that the edge portion 23a is removed. The wedge effect causes the Pi 34 to separate from the furnace cloth 16, so that only the furnace cloth 16 passes through the slit 25, with each surface of the furnace cloth 16 in sliding contact with each plate 23, 24.

On the other hand, when tightening the door plate 5, as shown by A in FIG.
23 comrades on the outer panel pushed each other and splashed 29.29
By contracting and storing both tear drop peeling members 26, 26 within the thickness of the door plate 5, there is no problem in tightening the furnace plate 5.

Furthermore, the furnace liquid peeling member 26, 26 between the support frames 19, 19
The first and second guide rollers 3L32 are supported between the and the furnace cloth take-up roller 20 to guide the furnace cloth 16 in front and behind the furnace plate, and the rear side of the door plate 5 between the rollers 31 and 32. A cleaning pipe 33 equipped with a large number of nozzles 33a projecting diagonally rearward and upward is provided to clean the furnace cloth 16.

Now, as shown by the solid line in FIG. 1, as the movable plate 7 moves forward,
Furnace plate 5. . . , when all the tubes 5 are tightened to the front stand 1 side, the stock solution supply pipe 1a supported on the front stand 1
Then, the stock solution press-fitted between the furnace cloths 16, 16 via the stock solution supply port 5c of each door plate 5 (see FIG. 2) and the stock solution supply fitting 15a attached to each furnace cloth 16 is separated into M and filtrate. The separated p liquid is collected from the furnace liquid recovery pipe 30 to perform offshore filtration.

When one filtration process is completed and the movable plate 7 is retreated to position A in FIG.
As shown in FIG. 3, the door panels 5 connected in order from the sides are opened in two at a time while keeping a constant distance from each other.

At the same time as the frame is opened, a portion of the separated P residue falls down due to gravity while remaining in the form of a cake.

At the stage where a part of the furnace liquid has fallen, the furnace cloth 16 is stretched out only one inch away from the furnace plate 5, and at this stage, the motor 13 is driven in the unwinding direction while decelerating. The left and right drive shafts 9, 9 allow the winding boot! , 111.11 is unwound, the torsion spring at its maximum twist rotates the take-up roller 20 in the winding direction with a strong spring force.

Due to the winding rotation of the winding roller 20 due to this spring force,
The furnace cloths 16-1 and 16-2 on both sides of each door plate 5 are polished by passing through each furnace liquid peeling member 26.
The furnace liquid 34 remaining in 6-2 is peeled off from the furnace cloth 16-1 and 16-2.

The saw cloth 16-1 on the front side of the door panel 5 from which the furnace liquid 34 has been peeled off is
After being bent slightly toward the rear of the door plate by the second guide roller 32, it is wound up by the furnace cloth take-up roller 20.

On the other hand, the furnace cloth 16-2 on the rear side of the door plate 5 is attached to the p-cloth guide downstream edge portion 24 of the lower edge of the inner plate 24 of the furnace liquid peeling member 26.
After sliding into contact with b, the cloth passes through the first guide roller 31 and second guide roller 32 and is wound onto the cloth take-up roller 20.

Note that the cleaning by the cleaning pipe 33 for each furnace cloth 16 is performed at p.
Perform this as appropriate when winding up the cloth or unwinding the furnace cloth.

In this embodiment, the slit 25 is formed by interposing the thin plate 27 between the outer plate 23 and the inner plate 24, so that the slit 25 can be formed by changing the thickness of the thin plate 27.
The width of the furnace cloth 16 can be easily changed and can be used for various furnace cloths 16.

In addition, since the furnace cloth 16 is passed through the slit 25 having a width approximately equal to the thickness of the furnace cloth 16, the P residue 34 attached to the furnace cloth 16, especially the P residue stuck to the furnace cloth that cannot be removed with a conventional scraper, etc., can be removed. P residue can also be removed cleanly and smoothly.

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

For example, as shown in FIGS. 8 and 9, a roller 35 may be provided in place of the inner plate 24, and a slit 25 may be formed between the roller 35 and the outer plate 23.

That is, both ends of the roller 35 are connected to the L-shaped auxiliary member 36.
．． 36, and a disc-shaped protrusion (not shown) for snap fitting is provided protruding from the inner surface of each auxiliary member 36.
9, while an engaging portion 36 similar to the inner plate 24 is provided at the end.
a is provided and engaged with the recess 22a of the support body 22, and the outer plate 2
The F residue peeling member 26 having the roller 3 and the roller 35 may be movable in the front and back direction of the furnace plate 5 as in the above embodiment.

In this way, the furnace cloth 1 is guided by the roller 35.
6 can run more smoothly within the slit 25.

As described in detail in the above embodiments, the filter press according to the present invention has a furnace liquid peeling member formed of opposing members forming a slit through which the furnace cloth passes, with a spring interposed between a pair of supports below the furnace plate. When a pair of furnace plates are provided between the frames and the furnace plates are opened, the biasing force of the spring positions the slits in the substantially vertically downward travel path of the furnace cloth, while when the furnace plates are tightened. Since the spring is contracted and housed within the thickness of the furnace plate, it is possible to reliably prevent wear of the furnace cloth without any problem in tightening the furnace plate, and the furnace cloth can be run extremely smoothly. can be done.

[Brief explanation of drawings]

Fig. 1 is a schematic front view of a filter press according to an embodiment of the present invention, Fig. 2 is a rear view of the furnace plate in the direction of the line ■-■ in Fig. 3, and Fig. 3 shows the filter press in an open state. 4 is an enlarged partially cutaway rear view of the main part of FIG. 2, FIG. 5 is an enlarged front view of the main part of FIG. 3, and FIG. 6 is a VI-VI diagram of FIG. 4.
7 is an enlarged front view of the main parts showing the open (indicated by B in the figure) and tightened (indicated by A in the figure) states of the furnace plate, and FIG. 8 is the P shown in FIG. 6. FIG. 9 is an enlarged plan view of the main part showing another embodiment of the residue peeling member, and FIG. 9 is an enlarged front view of the main part of the filter press according to the other embodiment shown in FIG. 1.3...Front, rear stands, 5...
Furnace plate, 16... Furnace cloth, 19... Support frame, 20... Take-up roller, 23... Outer plate, 24...・Inner plate, 25...slit,
26...P residue peeling member, 29°°°° Tsukasa.
34...furnace liquid, 35...roller, 36
...Auxiliary parts.

Claims (1)

[Scope of Claims] 1. A cord-like body connected to the upper ends of a pair of furnace cloths arranged between adjacent furnace plates is wound around a winding means that is driven in forward and reverse directions,
A pair of front and rear furnace cloths are arranged on a pair of supporting frames ml supported below each furnace plate so as to support the above-mentioned pair of furnace cloths so as to be freely put in and taken out, and sandwich the furnace plates in between. In a filter press, the filter press supports a furnace cloth take-up roller around which the lower end is wound, and a coil spring is mounted inside the furnace cloth take-up roller to urge the furnace cloth take-up roller in a direction to wind up the furnace cloth. A lachrymal fluid peeling member, which is composed of opposing members forming a slit through which the sheath cloth passes, and which peels off P residue adhering to the furnace cloth, is placed above the furnace cloth winding roller between the support frames, and is placed above the furnace cloth winding roller. When a pair of furnace plates are provided facing each other with elastic springs interposed in the front-rear direction, and when the furnace plates are opened, the slits are directed downward in the approximately vertical direction of the furnace cloth due to the biasing force of the springs. 1. A filter frit, characterized in that, when the furnace plate is tightened while being positioned on a travel path, a spring contracts and is housed within the thickness of the furnace plate.