JPS58219909A - Continuous solid-liquid separation apparatus - Google Patents

Abstract

PURPOSE:To provide the titled apparatus prevented from the generation of wrinkles and distortion of filter cloth by simple means, constituted from such a mechanism that plural endless bands provided along both side end flanges of endless filter cloth in an adjacent state is engaged with the side end flanges of the filter cloth and pressed to suction bands to hermetically seal the both side ends of the filter cloth. CONSTITUTION:When suction boxes 1 are present in a conveying section, filter cloth 6 is brought into close contact with a filter plate 3 to be moved at a speed in synchronous relation of the boxes 1 and suction orifices 2 are brought into communication with a suction through 5. In this case, a slurry cast onto the upper surface of the filter cloth 6 by supplying the same at the inlet end 9 of the conveying section is limited from the flowing-out to the outside directions by weir plates 20 provided to both sides thereof and sucked to be dewatered while transferred in a layered form with an almost uniform thickness to carry out solid-liquid separation. After the plate like cake molded on the upper surface of the filter cloth 6 by this solid-liquid separation is further pressed and dehydrated by a press roll 10 and, at the same time, the surface thereof is flattened, the filter cloth 6 is released from the boxes 1 and the plate like cake is succeedingly peeled off from the filter cloth 6 to be taken out. Thereafter, the filter cloth 6 is again transferred to the conveying section through a washing part 8 to repeat the similar operation as mentioned above.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous solid-liquid separation device for slurry materials.

Conventionally, this type of continuous solid-liquid separator has constructed a circulating conveyor by connecting a large number of suction boxes in an endless manner, each having a suction hole at the bottom and a perforated plate at the top opening. The above P of suction boxes connected to each other
A substantially horizontal conveyance surface is formed by the plate, and the suction hole is communicated with a suction trough arranged below the suction box in a certain conveyance section, and the surface of the P plate of the suction box is connected in the conveyance section. There is a known device in which an endless furnace cloth is closely arranged and the endless furnace cloth is moved at a speed synchronized with a suction box while being sucked.

In addition, as an improvement to the continuous solid-liquid separator, the inventor of the present application has proposed that an endless furnace cloth, which is brought into close contact with the surface of the P plate of the suction box in the conveying section, be connected to side grates that can be opened and closed at both ends of the suction box. Japanese Patent Publication No. 1983-33/2 describes a continuous solid-liquid separator which is sandwiched between the sac cover and the suction box, and which moves the furnace cloth and suction box at a synchronized speed while sucking.

Special Public Service No. 34-2 S77 and Actual Public Service No. 1 of 1977
This was proposed in the Publication No.

In the above device, both sides of the furnace cloth are sandwiched between the side plate and the suction box during the transport suction section, so the furnace cloth does not wrinkle or twist even during long sections, and the solids are separated. (It has many advantages, such as not having an adverse effect on the cake, making it easy to increase the size of the device, and being applicable to various solid-liquid separations.)

Since side plates that can be opened and closed are provided at both ends of each suction box, the cost of the entire apparatus is increased, and separated powder may stick to the opening/closing mechanism of the side plates and cause malfunctions.

(Secondly, even if the oven cloth was clamped between the side plates and the suction box, there was a drawback that air leakage from the side edges i1r of the oven cloth could not be completely prevented.

The object of the present invention is to solve the problems of the continuous solid-liquid separator with side plates described above, to prevent the occurrence of wrinkles and twists in the furnace cloth by a simple means, and to prevent It is an object of the present invention to provide a continuous solid-liquid separator that can reliably prevent air leakage.

In order to achieve the above object, the present invention provides a plurality of end bands adjacent to each other on both side edges of the F cloth, and the end bands are attached to seal the side edges of the furnace cloth. In addition, a locking portion that removably engages with a side end shoulder portion of the T-V sun box is provided on the outside, and either the locking portion or the side end shoulder portion is made of an elastic body. When the furnace cloth reaches the conveyance section, the end band is pressed against the suction box and pushed outward laterally by fixed baffles installed on both sides of the conveyance section; It is characterized in that the locking portion is configured to engage with the side end shoulder portion.

Hereinafter, one embodiment of the present invention will be described based on the drawings. 1
It is a V-eye box, and as shown in Figures 8 and 4, it is made of a perforated plate with a suction hole 2 at the bottom and a large number of small holes like punched metal at the top opening. A P plate 3 is stretched.

A large number of the suction boxes 1 are connected in an endless manner by a row chain 4 to form a circulating conveyor. The suction holes 2 of each suction box 1 are arranged under the suction box 1 and communicate with a suction trough 6 extending along the conveying section.

Reference numeral 6 denotes an endless furnace cloth, which is stretched outside the conveyor formed by the suction box 1 via appropriate rolls 7, and is stretched over the suction box 10 in the conveyance section.
It comes into close contact with the surface of the p-plate 3 and is moved at a speed synchronized with the suction box 1, and after passing the conveyance section, it gradually leaves the suction box 1, passes through the cleaning section 8, and is circulated again to the conveyance section. Reference numeral 9 indicates a souffle supply unit disposed above the entrance side of the conveyance section; 1
0 is a pressure roll disposed above the intermediate position of the conveyance section on the exit side.

Reference numeral 11 denotes an end band attached along both side edges of the F cloth 6. As shown in FIGS. 4 and 5, the end band 11 is formed by bending a stainless steel plate. 1
2, a locking portion 13 bent downward and extending from the outer end of the attachment portion 12, and a locking portion 14 bent upward and provided, and the attachment is done at the side end of the furnace cloth 6 at the portion 12. Backing edge 6a 1
*Glue it together with backing 1 by pinching it together with 6.
6 seals the side end cross section of the F cloth 6 and fixes it to the furnace cloth 6 with a stopper 16. This end pan bottom 11 is.

The furnace cloth 6 is divided into a large number of parts so as not to cause any trouble when the furnace cloth 6 bends along the low/L/7 direction.
are attached adjacent to each other along both side edges 6a of the locking portions 13, and a cutout portion 17 is provided at the side end of the adjacent locking portion 13 to prevent interference. The locking part 13 of the end band 11 engages with the gIII end shoulder part of the suction box 1 when the V5 cloth 6 is in the 11th conveyance section, makes the furnace cloth 6 in a tensioned state, and brings it into close contact with the P plate 3. It plays the role of synchronizing the furnace cloth 6 and the suction box 1 and moving them at nine speeds without causing wrinkles or twists in the cloth 6. In order to smoothly and reliably connect and detach, recessed steps 18 are provided on both shoulders of the suction box 1.
A piece of sponge 19 that can be easily elastically deformed is attached to the piece, and the shoulder part of the side end is formed by the piece of sponge 19.

Reference numeral 20 denotes a weir plate that drips onto both side edges of the furnace cloth 6 in the conveyance section and is erected above it, and is fixed to a support arm 22 fixed to the base 21, and its lower end surface is attached to the P cloth e. It is arranged so as to press against end bands 11 attached to both side edges. The weir plate 2° is as shown in Figures 2 and 4.
An inclined guide portion 20& is formed extending over the entire length of the conveyance section and bent slightly inward at the entrance side.

Then, when the furnace cloth 6 moves to the entrance side of the conveyance section, the locking portion 14 of the end band 11 is moved to the inclined guide portion 20a.
The locking portion 13 of the end band 11 is engaged with and gradually pushed out laterally outwardly, and the furnace cloth 6 is pulled laterally outwardly in a slightly tensioned state, and the locking portion 13 of the end band 11 is engaged with the ! The side end layer made of the sponge piece 19 of the suction box 1 engages with the end layer to move the furnace cloth 6 and the suction box 1 at a synchronized speed as described above.

Next, the production mt will be explained.

When the suction box 1 is in the conveyance section, the furnace cloth 6 comes into close contact with the p plate 3 and moves at a speed synchronized with the suction box 1 as described above, and the suction hole 2 communicates with the suction cloth 6. The slurry-like material supplied through the supply chute 9 at the inlet end of the conveyance section and spread onto the upper surface of the furnace cloth 6 is prevented from flowing outward by the weir plates 20 on both sides, so that the slurry has a nearly uniform thickness. The solid-liquid separation is performed by suctioning and removing the liquid while the liquid is continuously transferred in a layered manner. Through this solid-liquid separation, a plate-shaped separated solid (cake) is formed on the upper surface of the furnace cloth 6.This separated solid is further dehydrated under pressure using a pressurizer 10, and at the same time its surface is made flat. , the furnace cloth 6 is detached from the suction box 1, and then a long plate-shaped separated solid is peeled off from the furnace cloth 6 and taken out.

After that, the furnace cloth 6 passes through the cleaning section 8 and moves to the conveyance section again.
The same operation as above is repeated.

FIG. 6 shows an example in which the end band 11 is made of an elastic material such as sponge or rubber.
The end band 11 is attached by inserting the side edge 6a of the furnace cloth 6 into the end band 3 and fixing it with adhesive to seal the cross section of the side end of the furnace cloth 6. If the end band 11 is made of an elastic material in this way, the locking portions 13 will be easily elastically deformed. Therefore, as in the above embodiment, the side end shoulder portions of the suction box 1 are made of an elastic material such as a piece of sponge 7. There is no need to do this, and the number of parts and processing steps are reduced accordingly, making the structure simpler.

As described above, according to the present invention, the simple structure of attaching end bands along both side edges of the furnace cloth effectively prevents the occurrence of wrinkles and twists in the furnace cloth. The suction boxes can be moved at synchronous speeds, and both edges of the furnace cloth are sealed by the end bands.

Air leakage from the side end section of the furnace cloth can also be reliably prevented. Therefore, compared to the above-described continuous solid-liquid separator with a side grate, it can be manufactured at a lower cost and the size of the apparatus can be easily increased.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a cutaway front view of a continuous solid-liquid separator according to the present invention, FIG. 2 is a cross-sectional view, and FIG. 4 is an enlarged perspective view of the same main part, FIG. 5 is a longitudinal sectional view of the main part, and FIG. 6 is a longitudinal sectional view of the main part of another embodiment. 1...Saku V Yon Box 2...
...Suction hole 3...Door plate
6・・・・・・・・・Saku VB Totsufu 6・・・・・・−・
F, I 11...End band 12...Mounting part 13.14...
... Locking part 1e ... Sponge piece 20 ...
...Seki plate patent applicant Nakajima Seisakusho Co., Ltd.

Claims (1)

[Scope of Claims] 1. A conveyor that circulates by connecting a large number of Sakurayon boxes each having a suction hole at the bottom and a single plate at the top opening in an endless manner, and interconnecting Sakurayon boxes (VH). The one plate of the storage box forms a horizontal conveying surface, and in a predetermined conveyance section, the suction hole communicates with a container located below the container box, and F in close contact with the surface of the furnace plate of the box.
In the apparatus, the cloth and the suction VB box are moved at the same speed while being suctioned. A large number of end bands are attached adjacently along both side edges of the P cloth, and the end bands are attached so as to close the side edges of the F cloth, and the sides of the Saku VM box are attached to the outside. A locking portion that removably engages with the end shoulder portion is provided, and either the locking portion or the front and rear end scrap portions are made of an elastic body. 113 (F' When the fabric is self-propelled in the conveyance section, the end band is pressed against the VB box by the fixed weirs installed on both sides of the conveyance section, and it is moved in all directions outside the premises. A continuous solid-liquid separator configured to extrude and engage the locking portion with the side end shoulder portion. 2. The end band marked with # is constructed by bending a metal plate, and the end band is formed by bending a metal plate, and the end band is 6. A continuous solid-liquid separator according to claim 1, wherein the end shoulder portion is formed of sponge. 6. A supply chute for supplying the cotton cloth onto the P cloth in the conveying section; A continuous solid-liquid separator according to claim 1 or 2, comprising a pressure roll that pressurizes a substance while sucking it or after sucking it.