JPS5943207B2 - Single filter press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is capable of reducing the resistance of the passage for supplying raw liquid to the furnace chamber to prevent the passage from being blocked by furnace liquid (cake), and by dividing the passage into concave grooves. , relates to a single-type filter press that allows cake to be easily peeled off.

Conventionally, in general, a single filter press has been constructed by tightening adjacent furnace plates with a pair of furnace cloths in between to form a furnace chamber surrounded by the furnace cloth between the furnace plates, and to supply liquid from the raw solution supply tool attached to the furnace cloth. The raw solution is supplied into the furnace chamber and separated into a cake and a p-liquid.

However, in this type of single filter press, the stock solution supply tool attached to the furnace cloth is essentially limited by the weak strength of the furnace cloth, so it inevitably becomes a small item.
The disadvantage is that the passageway of the stock solution supply device is small, and therefore the resistance of the passageway is increased, making it easy for cake to accumulate there.

Moreover, since the passage cannot be divided, it is difficult to peel off and remove cake accumulated there.

The purpose of this invention is to eliminate the above-mentioned drawbacks,
To reduce the resistance of a passage for supplying an undiluted solution to a furnace chamber, to prevent the passage from being blocked by cake, and to divide the passage to facilitate peeling and removal of cake.

Therefore, in the single filter press of the present invention, adjacent furnace plates in which the outer periphery forming the tightening surface is thicker than the central portion forming the filter surface are tightened with a pair of furnace cloths in between. A frame-shaped stock solution supply plate is interposed between the pair of furnace cloths, and the inner peripheral surface of the stock solution supply plate surrounds the outer periphery of the tightening surface of the furnace plate, and the inner peripheral surface of the stock solution supply plate is By opening a branch passage from the raw solution passage and providing a concave groove on the tightening surface of the furnace plate to communicate the branch passage and the furnace chamber, the dimensions of the passage consisting of the branch passage and the concave groove can be adjusted to the size of the furnace cloth. The raw solution can be directly supplied to the furnace chamber through the branch passages and grooves without being restricted by strength, thereby reducing the resistance of the passages, and the furnace plate is separated to divide the passages into grooves. It is characterized by being made possible.

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

In FIG. 1, 1 is a pair of front and rear end plates, 2 is a plurality of substantially rectangular door plates laminated between the pair of end plates 1 and 1, and 3 is between the end plate 1 and the door plate 2 and between the door plate 2. A pair of furnace cloths 3 and 2 are provided, and 4 is a substantially rectangular frame-shaped stock solution supply plate provided between each pair of furnace cloths 3 and 3.
, the furnace plate 2, the furnace cloth 3, and the stock solution supply plate 4 are tightened by means not shown to form a swell chamber 5 between the pair of furnace cloths 3, 3, respectively, while the end plate 1 and the door plate 2 are tightened in an open state. , stock solution supply plate 4
are opened by means not shown so that the ash in the furnace chamber 5 can be discharged.

Tightening surfaces 11, which are so-called frame tightening surfaces, on both sides of the door plate 2
, 11 has both filter surfaces 14., 11 having mesh grooves 13, as shown in FIGS.
14 is formed to be thicker by a certain dimension than the central portion 15, and a thin portion 17 is continuously provided outside the outer circumferential portion 12 via both tapered surfaces 16°16.

On the other hand, the inner circumferential surface of the stock solution supply plate 4 is formed into a tapered surface 21.21 having an isosceles triangular cross section.
21 along the tapered surface 16° 16 of the furnace plate 2.

The thickness of the stock solution supply plate 4 is configured to be constant, and the tightening surface 22 of the stock solution supply plate 4 is connected to the door plates 2 on both sides through the furnace cloth 3.
When tightening at the thin wall part 1T of the outer peripheral part 1 of the furnace plate 2 on both sides
The two clamping surfaces 11 and 11 are pressed against each other via the furnace cloths 3, 3.

Therefore, the inner peripheral surfaces 21, 21 of the stock solution supply plate 4 are the same as those of the furnace plate 2.
It is designed to surround the outer circumferential edge S of the tightening surface 11 on the outer circumferential part of.

Further, at the center of each upper side of the furnace plate 2 and the stock solution supply plate 4, as shown in FIGS. 2 and 4, an upwardly protruding portion 3 is provided.
1 and 32 are provided, and through holes 3 are provided in each of the protrusions 31 and 32, respectively.
3.34 is provided, and when the frame is closed, the through holes 33 and 34 are positioned in a straight line to form a stock solution passage 35.

A branch passage 36 is branched from the through hole 34 of the stock solution supply plate 4 and opened into a notch 37 provided on the inner circumferential surface 21 .

The cutout 37 is located directly below the through hole 32.

Furthermore, grooves 38 are provided in both the tightening surfaces 11, 11 of the outer peripheral portion 12 of the door plate 2, respectively, for communicating the branch passage 36 with the furnace chamber 5.

The concave grooves 3B and 38 and the branch passage 36 form a passage connecting the raw solution passage 35 and the furnace chamber 5.

In addition, in FIG. 1, 41 is a lachrymal discharge passage, and in FIGS. 2 and 4, 42 and 43 are a pair of handles provided on both sides, respectively, which are supported by side beams (not shown).

In the single filter press configured as described above, the stock solution is passed through the stock solution passage 35, the branch passage 36, and the groove 38, and then passed through the furnace chamber 5.
When the raw solution is pumped into the chamber, the furnace cloth 3 separates the raw solution into cake and lachrymal fluid.

The cake collects in the furnace chamber 5, and the tear fluid collects in the mesh groove 13 of the door plate 2.
The lachrymal fluid is discharged through the tear drainage passageway 41.

Note that sealing between the door plates 2 and between the door plates 2 and the stock solution supply plate 4 is performed by the furnace cloth 3.

The passage for supplying the concentrate from the concentrate passage 35 to the furnace chamber 5 is as follows:
Since it is composed of the branch passage 36 of the stock solution supply plate 4 and the concave groove 38 of the furnace plate 4, there are no dimensional restrictions and the resistance of the passage is reduced compared to the passage provided for small articles attached to the conventional furnace cloth. Therefore, it is possible to prevent the passage from being blocked by cake.

Next, open the frame of the single filter press, that is, the end plate 1,
The furnace plate 2 and stock solution supply plate 4 are separated and opened from each other by well-known means, and the cake accumulated in the furnace chamber 5 is discharged.

At this time, since the cake is accumulated inside the thick outer circumferential portion 12 of the oven plate 2, the cake can be easily discharged.

From a different perspective, the cake can be easily discharged because there is no obstacle to discharge the cake, such as the P frame of the dual filter press.

Furthermore, when the furnace plates 2, 2 are separated, the branch passage 3
Since the passage between the furnace chamber 6 and the furnace chamber 5 is divided into the grooves 21, 21, the cake in the passage can be easily peeled off and removed.

Therefore, it is possible to prevent the cake from growing inside the branch passage 36.

Therefore, there is no need to provide a special means and effort for removing the cake, and the stock solution can be supplied into the F chamber 5 many times without taking the trouble of removing the cake.

Furthermore, when the furnace is opened, the stock solution supply plate 4 is not fixed to the furnace cloth 3 and can be completely separated from the flowing cloth 3. Therefore, even if the furnace cloth 3 is run, it will not damage the furnace cloth 3. It does not cause wrinkles on the furnace cloth.

Also, a stock solution supply plate 4 serves as a supply point for stock solution to the furnace chamber 5.
Since the positioning can be performed independently of the furnace cloth 4, it can be done reliably.

The modification shown in FIG. 6 is based on the outer circumference 1 of the door plate 2 shown in FIG.
The outer thin wall portion of the undiluted solution supply plate 2 is removed to form a thicker undiluted solution supply plate 4, and the undiluted solution supply plate 4 is pressed through the furnace cloth 3 between the undiluted solution supply plates 4 and 4.

In the modification shown in FIG. 7, the stock solution supply plate 4 is formed thinner than that shown in FIG. 6, and a gap is provided between the stock solution supply plates 4.4.

In addition to the type in which the furnace cloth runs, the single filter press of the present invention can also be applied to a type in which the furnace cloth is fixed to a door plate, and a type in which the furnace cloth is hung from above.

As is clear from the above description, according to the present invention, adjacent furnace plates are tightened with a pair of furnace cloths in between, and a frame-shaped stock solution supply plate is interposed between the pair of cloths. The inner circumferential surface of the stock solution supply plate surrounds the outer circumference of the tightening surface of the outer circumference of the door plate, and a branch passage is opened on the inner circumference of the stock solution supply plate,
Since a concave groove is provided on the tightening surface of the door plate to communicate the source passage and the furnace chamber, the dimensions of the passage consisting of the branch passage and the concave groove can be set arbitrarily, and the raw liquid can be directly supplied to the furnace chamber through the passage. Therefore, it is possible to reduce the resistance of the passage and prevent the passage from being blocked by cake.

Moreover, when the frame is opened, the passage is divided into grooves so that the cake can be easily peeled and removed.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of the main parts of a single filter press according to an embodiment of the present invention, FIG. 2 is a side view of the door plate, FIG. The figure is a side view of the stock solution supply plate, FIG. 5 is a sectional view taken along the line V-■ in FIG. 4, and FIGS. 6 and 7 are sectional views of main parts of modified examples. 1...End plate, 2...Door plate, 3...
... Furnace cloth, 4 ... Stock solution supply plate, 35 ...
・Standard solution passage, 36...Branch passage, 38...
・Concave groove.

Claims (1)

[Claims] 1. Adjacent furnace plates in which the outer periphery forming the tightening surface is made thicker than the central portion forming the filter surface are tightened with a pair of furnace cloths in between, and the furnace plates are In a single filter press in which a furnace chamber surrounded by a furnace cloth is formed between the filter surfaces, and the stock solution to be filtered is supplied into the furnace chamber to separate the furnace liquid and the furnace liquid, the above pair of furnace cloths is used. a hollow frame-shaped stock solution supply plate that is sandwiched between and surrounds the outer periphery of the outer periphery of the furnace plate on its inner circumferential surface; a stock solution passage that penetrates the furnace plate and the stock solution supply plate; and a stock solution passage that branches from the stock solution passage. , comprising: a branch passage opening on the inner circumferential surface of the stock solution supply plate; and a groove provided on the tightening surface of the furnace plate so as to communicate the branch passage with the furnace chamber. Single filter press.