JPS6028528B2 - Filter cloth device for filter press with fixed filter cloth - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a furnace cloth layer of a so-called furnace cloth fixed type filter press in which the upper end of the furnace cloth is suspended above the furnace plate and a part of the furnace cloth is fixed to the furnace plate side. .

Conventionally, various oven cloth fixing mechanisms have been known in this type of oven cloth fixing type filter press.

For example, in Utility Model Publication No. 21094, furnace cloths hung on both sides of a furnace plate are connected in the undiluted solution hole of the furnace plate to form a undiluted solution supply hole of the furnace cloth, and the undiluted solution of the furnace plate is A structure is disclosed in which a furnace cloth is fixed at the hole.

Furthermore, Japanese Patent Publication No. 39-20697 discloses a structure in which a mounting bracket having a solution hole is used to tighten and fix the solution hole of the furnace cloth to the solution hole of the furnace plate.
Publications No. 1203 and No. 45-13027 disclose a structure in which the mounting brackets of the furnace cloth are mutually supported when the tear plate is tightened, and both mounting brackets are provided with grooves for distributing the stock solution. has been done.

As mentioned above, in the conventional furnace cloth fixing structure, the furnace cloth is fixed to the raw solution hole of the furnace plate, so the upper end of the furnace cloth is supported elastically using the furnace cloth hanging rod. Even if the furnace cloth is vibrated by applying vibration to the furnace cloth hanger when opening the filter press (separate frame), the vibration of the furnace cloth is not transmitted to the portion below the stock solution hole.

For this reason, in the case of a highly sticky furnace cake, the upper half can be separated from the furnace cloth due to the vibration of the furnace cloth and be collected, but the lower half can be partially removed because the furnace cloth does not vibrate. Even if the furnace cloth falls under its own weight, the furnace cloth still adheres to the surface of the furnace cloth and cannot be removed, resulting in a problem in which the furnace performance deteriorates. The present invention has been made in view of this problem, and includes a support structure for the furnace cloth that can provide good separation of the furnace scum over the entire surface of the furnace cloth when the furnace plate is attached. The basic objective is to provide a furnace cloth device for a filter press with a fixed furnace cloth.

Furthermore, the present invention allows the undiluted solution to be attached to the furnace cloth and the furnace cloth so that the furnace cloth can be easily attached to the furnace plate and the vibration of the furnace cloth is not restricted in any way by anything other than the furnace cloth. Another objective is to improve the structure for supplying the stock solution during the process.

For this reason, in the present invention, the upper end of the furnace cloth is hung from a furnace cloth hanging rod that is vibratedly suspended by a spring suspended from a link attached to the outer periphery of the furnace plate, and the furnace cloth is hung on the furnace plate surface. , consists of a furnace cloth device in which the lower end of the furnace cloth is pulled from below the furnace plate so that the furnace cloth is always hung above and below the furnace plate.

Then, the entire surface of the furnace cloth is hung flat against the furnace plate surface with vertical tension, and between the furnace plates, the stock solution supply hole of the furnace plate is aligned with each of the pair of opposing furnace cloths. A undiluted solution inlet is provided, and a thick undiluted solution supply plate is fixed to the periphery of the undiluted solution inlet on one furnace cloth, so that the undiluted solution in the other furnace cloth is opened when the furnace plate is tightened.
The basic feature is that the periphery is in contact with the stock solution supply plate, and the stock solution supply plate is provided with a stock solution supply path passing through it in the radial direction to guide the stock solution between a pair of furnace cloths. There is. In addition, in the present invention, the term "furnace plate" includes not only a normal furnace plate but also a so-called pressing furnace plate, and includes a filter press in which ordinary furnace plates and pressing furnace plates are arranged alternately, and a filter consisting only of pressing furnace plates. The present invention can also be applied to presses. Furthermore, the term "fixed furnace plate type" is used in contrast to the term "furnace cloth running type", and the effective working surface of the furnace cloth is not moved vertically relative to the furnace plate, and vibrations are prevented. However, it means a type that is fixed to the furnace plate at its own cost.

Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments. In FIG. 1, 1 is a front stand that supports the main plate 2 and has a stock solution supply pipe 3 and a furnace plate recovery pipe 4 attached, and 5 is a vertically mounted hydraulic cylinder with a plunger tip connected to the center of the back of a movable plate 6. Rear stand supporting 7, 8,
..., 8 has a pair of handles on both sides suspended on a pair of side beams 9, 9 extending between the front and rear stands 1, 5, respectively,
This is a furnace plate that can be moved in parallel in the front and back direction of the filter press.

When the movable plate 6 moves forward and the main plate 2 and the movable folding plate 6 are mutually tightened, each of the oven plates 8 adjacent to each other
. The furnace liquid is gradually formed into a furnace liquid cake, and the furnace liquid is collected and collected in the furnace liquid recovery pipe 4.

When one furnace week ends, the movable plate 6 is moved back, and in the illustrated example, the furnace plates 8 are opened one after another from the side of the movable plate 6 by a well-known frame opening mechanism (not specifically shown). , collects furnace repair cake.

As shown in FIGS. 1 and 2, a pair of furnace cloths 10-1 and 10-2 between adjacent furnace plates 8 and 8 have their upper ends connected to furnace cloth hanging rods.
1, and its lower end is fixed to the lower part of the furnace plate 8 by means of a furnace cloth retaining rod 12. The furnace cloth hanging rod 11 has a pair of compass-shaped links 13-1 whose lower ends are hinged to the upper parts of each side of the adjacent furnace plates 8, 8, and whose upper ends are hinged to each other so as to be freely openable and closable. , 13-2, and is elastically suspended by coil springs 15, 15 whose upper ends are hooked to the upper end hinge pins 14 of 13-2.

One end of the short links 16, 16 is hinge-supported at the intermediate portion of the pair of links 13-1, 13-2, and a furnace cloth rod 17 is supported between the pair of links 16, 16 on both sides. As shown in FIG. 1, when the adjacent furnace plates 8, 8 are opened mutually, the furnace cloth hanging rod 11 and each furnace cloth locking rod 12 are connected by the front and rear pair of furnace cloth tensioning rods 17, 17. Each furnace cloth 10 between
1 and 10-2 to give the necessary tension.

A furnace cloth vibration device 19 runs along upper rails 18, 18 bridged between the upper parts of the front and rear stands 1, 5.
is located directly above the furnace cloth hanging rod 11, and the striking piston 2
When the furnace cloth suspender 11 is actuated to give a blow to the furnace cloth suspender 11, the furnace cloth suspender 11 vibrates greatly in the vertical direction. 12) Alternately repeat loosening and tensioning to allow the furnace slag that has adhered to the frame to fall without falling naturally when the frame is opened.

As shown in FIGS. 1 and 2, one of the furnace cloths 10-1 of the pair of furnace cloths 10-1 and 10-2 between the furnace plates 8 and 8
In this case, the stock solution supply plate 22 is fixed so as to fit into the stock solution supply hole 21 of the furnace plate 8, and the stock solution supply plate 22 is supported in a free state with respect to the furnace plate 8.

Therefore, as described above, when the oven plates 8, 8 are opened and tension is applied to the oven cloths 10-1, 10-2, the oven plates 8,
The furnace cloths 10-1 and 10-2 are completely separated from each other. As shown in FIGS. 3, 4, and 5, the stock solution supply plate 22 is constituted by a relatively thick ring-shaped member, and the ring-shaped member has through-holes in the direction of the grooves perpendicular to each other. 23, . . . , 23 are bored to form a stock solution supply path. This stock solution supply plate 22 is connected to the furnace plate 8
From the front side of the furnace cloth 10-1, around the concentrate opening 25 of one of the furnace cloths 10-1, which is opened so as to match the concentrate supply hole 21 defined by the packing 24 iron-bonded to the concentrate supply hole of the furnace cloth 10-1. The countersunk head bolts 26 are used to hold the furnace cloth 10-1 vertically in a biting state and fasten it to the furnace cloth 10-1. Then, when the furnace plates 8 and 8 are attached to each other, the packing 2
A stock solution supply plate 22 is provided between the furnace cloths 10-1 and 10-
2, the stock solution to be passed through the furnace reaches the stock solution supply hole 21 of the furnace plate 8, the stock solution opening 25 of the furnace cloth 10-1, and the inner circumference of the stock solution supply plate 22, and some of the stock solution is passed through the through hole. 23,...,23
A pair of furnace cloths 10 are connected by a raw solution supply path formed by
--, 10 and 2', and the rest is further distributed between
undiluted solution entrance 25 of furnace cloth 10-2, undiluted solution supply hole 2 of furnace plate 8'
5.

As described above, the stock solution distributed and supplied between the pair of furnace cloths 10-1 and 10-2 is separated into the furnace liquid and the furnace liquid by the furnace cloths 10-1 and 10-2. It is gradually formed into a cake shape in the furnace chamber 27 formed between the furnace plates 8, 8.

When one round of furnace passing is completed, the furnace plates 8 are sequentially recessed as described above.

Due to this opening, the furnace cloths 10-1, 10-2 are connected to the furnace plate 8,
8, and when vibration is applied to the furnace cloth suspension 11 by the furnace cloth vibrator 19, one furnace cloth 10-1 is completely stretched including the stock solution supply plate 22, and the other furnace cloth is The cloth 10-2 vibrates completely freely. Therefore, the furnace sludge that did not fall naturally due to its own weight and had adhered to the furnace cloths 10-1 and 10-2 is peeled off well from the furnace cloths 10-1 and 10-2 and is collected by falling. In the above embodiment, a pair of furnace plates 8, 8
A pair of furnace cloths 10-1 and 10-2 are hung between them, and as shown in FIG. It may also be supported by hanging.

In addition, in order to effectively vibrate the furnace cloths 10-1 and 10-2, as shown in FIG.
2, a pair of iron fitting grooves 29 provided with mounting brackets 28,
It is preferable to iron it to 29 and support it so that it can vibrate in the vertical direction.

In addition, in the figure, at 30', there is a stopper fixed to the lower part of the mounting bracket 28 by the stopper bolts 31, 31, and the stopper 30 can be attached or removed, or the bolt 31 can be loosened to lower the metal fitting 30 and the furnace cloth can be removed. The locking rods 12, 12 are moved in and out.

In the above embodiments, the amplitude of the locking rod 12 at the lower end of the furnace cloth and the positioning of the furnace cloth are determined.
In the hanging structure of the furnace cloth 10 as shown in the figure, an amplitude regulating device 40 as shown in FIG. The dead center may be set to be adjustable.

That is, as shown in FIG. 10, the amplitude regulating device 40 has a coil spring 43 wound between an outer cylinder 41 and an inner cylinder 42 that are relatively movable in the axial direction.
The upper end is received by the upper end flange 42a of the inner cylinder 42, and the lower end is received by the inward flange 44a of the spring receiver cylinder 44 screwed onto the lower outer periphery of the outer cylinder 41. The connecting placket 45 protruding upward is fixed to the hinge pin 14 (see Fig. 1) or the spring hook pin 14' with a nut 46, while the threaded hole 42b provided at the bottom of the inner cylinder 42 is connected to a connecting bolt. 47, and after adjusting the height of the bolt 47, it was fixed with a nut 48. A mounting bracket 49 was attached to the lower end of this bolt 47, and the end of the Yodo cloth suspension 11 was supported by the mounting bracket 49. It is something.

In this case, the top dead center of the furnace cloth suspension 11 is determined by the contact of the upper end flange 42a of the inner cylinder 42 with the upper end surface of the outer cylinder 41, and the bottom dead center is determined by the maximum compression amount of the coil spring 43 and the connection It is determined by the fixing position of the bolt 47. In addition,
In the furnace cloth suspension neck structure shown in FIG. 8, a pair of furnace cloths 10-1, 10
In order to provide the V-shaped tension of -2, the furnace cloth retaining rod 12 is supported by a mounting bracket 51 provided with long grooves 50, 50. Further, in the oven cloth hanging structure shown in FIG. 3, the oven cloth locking rod 12 can be made free.

As is clear from the above description, according to the present invention, even in a filter press with a fixed furnace cloth, the entire surface of the furnace cloth can be separated from the furnace plate and vibration can be applied, so that when the furnace cloth is opened, , it is possible to reliably keep the furnace clearer away from the entire surface of the furnace cloth.

In addition, since the undiluted solution supply plate is fixed to only one side of the furnace cloth, it is easy to attach and remove the undiluted solution supply plate. Since only one side is fixed, the pair of furnace cloths can be opened sufficiently when the furnace plate is attached, and peeling of the furnace cake will not be hindered. Further, when the furnace cloth vibrates, the stock solution supply plate also vibrates together with one of the furnace cloths, so that the stock solution supply plate can promote the vibration of one of the furnace cloths due to its own weight. Since one furnace cloth is equipped with a stock solution supply plate, vertical and diagonal wrinkles do not occur on the surface of the furnace cloth, and the entire surface of the furnace cloth can be held flat and vibrated uniformly over the entire surface of the furnace cloth. . Furthermore, since each furnace cloth is not fixed to the furnace plate, it is easy to attach and remove the furnace cloth, and the vertical attachment of each furnace cloth by the undiluted solution opening plate and the furnace temporary is released for each furnace plate connection frame. It can effectively prevent tightness, fatigue, damage, etc.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing a furnace cloth fixed type filter press according to an embodiment of the present invention in an open frame state, FIG. 2 is a front view of the furnace slope shown in FIG. 1, and FIG. 4 is a rear view of the raw solution supply plate of the furnace cloth, and FIG. 4 is a sectional view taken along line A-A in FIG.
The figure is a sectional view of a main part of a pair of furnace plates showing the condition of the stock solution supply plate shown in FIG. Fig. 7 is a front view of the mounting bracket showing the support structure of the furnace cloth retaining rod, Figs. FIG. 9 is an enlarged sectional view of the amplitude regulating device shown in FIGS. 10-1, 10-2... A pair of hearth cloths, 11...
... Furnace cloth hanging rod, 12 ... Furnace cloth retaining rod, 15 ...
... Coil spring, 22 ... Stock solution supply plate,
23 through holes. Figure 2 Figure 1 Figure 10 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9

Claims (1)

[Claims] 1 The upper end of the filter cloth is hung from a filter cloth hanging rod that is vibrated by a spring suspended from a link attached to the outer circumference of the filter cloth, and the filter cloth is hung on the filter plate surface. In a filter press, which consists of a filter cloth device in which the lower end of the cloth is pulled so that the filter cloth is always stretched above and below the filter plate, the filter cloth is hung flat against the filter plate surface with the entire surface stretched vertically, Between the filter plates, each of the pair of opposing filter cloths is provided with a stock solution opening that matches the stock solution supply hole of the filter plate, and a thick stock solution supply plate is fixed to the periphery of the stock solution opening of one of the filter cloths. When tightening the filter plate, the periphery of the undiluted solution opening of the other filter cloth is brought into contact with the undiluted solution supply plate, and the undiluted solution supply plate is provided with:
1. A filter cloth device for a filter press with a fixed filter cloth, characterized in that a stock solution supply path for guiding the stock solution is provided to penetrate in the radial direction between a pair of filter cloths.