JPH0139803B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention separates an organic/inorganic fine particle suspension (hereinafter referred to as a stock solution) into water and fine particles, and dehydrates the fine particles to form laminated fine particles (hereinafter referred to as a cake).
This relates to a body rotation type diaphragm.

The basic structure of the present invention has already been patented. Each body consists of pieces centered around the axis of rotation, which are intersected with each other and arranged in a straight line.Due to its structure, the body cannot rotate very quickly, resulting in slow overspeed. There were flaws.

The present invention is an apparatus free from such drawbacks, and will be described below with reference to the drawings.

Two or more bodies 2, which will be described later, are arranged in a row in a process chamber 11 of a process box 1, which consists of a process chamber 11 having a stock solution supply port 11a and a cake takeout port 11b, and a liquid chamber 12 having a liquid discharge port 12a. They are arranged in two rows at a suitable interval, and the central axis 21 of the body 2 is rotatably fixed to both side plates 10, 10' of the processing chamber 11. The body row is arranged such that the side near the cake outlet 11b is the dehydration zone A, and the opposite side is the through zone B, and the body row in the dehydration zone A is arranged in a straight line, while the body row in the through zone B is not. They are arranged in a straight line (for example, in a staggered pattern or in one direction of the body row).

In the dehydration zone A, pieces 22 with different diameters and a spacer 23 are stacked alternately or appropriately around a central axis 21, and a liquid chamber 12 is provided in the piece 22.
A liquid guide hole 24 communicating with the body 2 is provided, and both ends of the body 2 are connected to the fixing ring 2 of the piece 22 and the spacer 23.
5 is set. Also, the body 2' of the hyperzone B is
A ring-shaped loose piece 26' is provided between each piece 22 of the body 2 and the same piece 22'.
6' has an inner diameter larger than the spacer 23', and the spacer 23' is fitted into the inner diameter. or,
A narrow groove 27, 27' is formed between the pieces 22, 22' on the outer periphery of the spacers 23, 23'. In addition, the symbol P in the figure is a sealing member provided between the body 2 and the periphery of the cake outlet 11b to cut off contact with the undiluted solution and the cake. F is a lid of the cake outlet 11b, which is opened manually or automatically under certain conditions.

Here, the body 2 of the dehydration zone A shown above may also be provided with a loose piece 26', and the dehydration zone B
The body rows may be linear (that is, the opposing body rows may be parallel).

Further, a cleaning water supply port 3 is provided close to the side of each body 2, 2', and pressurized water is jetted continuously or intermittently to the body 2 through the liquid guide holes 24, 24' of each body 22, 22'. A device for cleaning the gap grooves 27, 27' and the liquid guide holes 24, 24' may be provided.

Further, a device S for adding a flocculant to the stock solution supplied to the stock solution supply port 11a may be installed.

Further, a means K for detecting the hardness of the cake may be provided at the cake outlet 11b and connected to the flocculant addition device S, so that the amount of flocculant added may be automatically adjusted.

Further, the shapes of the pieces 22, 22' of each body 2, 2' may not be circular but may be oval, square, rectangular, star-shaped, or star-shaped.

Next, the operation of the apparatus of the present invention will be described. First, the stock solution is supplied from the supply port 11a. At that time, the lid F is closed, and the entire parts 2 and 2' are driven separately (not shown).
It is rotating due to Therefore, first pass zone B.
The liquid is discharged from the liquid guide hole 24' and the liquid chamber 12 to the outside of the system through the gap groove 27' between the pieces 22'. At this time, cake is stacked between the pieces 22' and blocks the liquid guide hole 24', but it is removed by the loose piece 26' toward the outer periphery of the body 2'. This leads to mistakes being made more quickly. The overzoned cake is then sent to the dewatering zone A by the rotation of the body 2'. So body 2 again
The liquid is removed in the gap groove 27 between the pieces 22 and guided to the cake outlet 11b. Then, when the space between the bodies is filled with cakes and the undiluted solution no longer comes out directly from the cake outlet 11b, the lid F is opened and the cakes are sequentially discharged.

Herein the invention achieves its purpose.

In the device of the present invention, by arranging the body with loose pieces, the interstitial groove of the body serving as a sieving hole is constantly cleaned, so that sieving can be carried out more quickly.
Moreover, by combining this device with a body having no loose pieces, it also has the effect of widening the range of application of this device depending on the type of stock solution (that is, the type depending on the size of the fine particles).

[Brief explanation of drawings]

FIG. 1 is a front sectional view, FIG. 2 is a sectional view taken from the side in FIG. 1, and FIG. 3 is an enlarged view of the main part Z in FIG. 1... Processing box, 2, 2'... Body, 11... Processing chamber, 11a... Stock solution supply port, 11b... Cake removal port, 21, 21'... Center (rotation) shaft, 22,
22'... piece, 24, 24'... liquid guide hole, 2
6′...Free piece, 27, 27...Gap groove.

Claims (1)

[Claims] 1. A body consisting of a plurality of annular pieces fixed around a rotating shaft with gap grooves maintained between each piece, each piece having a liquid guide hole axially bored in communication with the gap groove. A large number of bodies are placed close to each other, and pieces of adjacent bodies are lined up in a state in which they protrude into the gap grooves to form a body row, and this body row is arranged facing each other in a processing box having a stock solution supply port and a cake removal port. In a filtering device in which a liquid guide hole at one end or both ends of the body communicates with the outside of the processing box, a part or all of the body is
A loose piece combination device characterized in that a loose piece that does not move in conjunction with the rotation of the body is provided in the gap groove. 2. The loose piece combination device according to claim 1, characterized in that a loose piece is provided in the gap groove of the body on the side of the stock solution supply port in the body array. 3. The loose piece combination device according to claim 1 or 2, which is provided with means for cleaning the liquid guide hole of each body piece. 4. The loose piece combining device according to any one of claims 1 to 3, which is provided with a device for adding a flocculant to the stock solution. 5. The loose piece combination and filtration device according to claim 4, wherein the device for adding a flocculant to the stock solution is provided with means for adjusting the amount of flocculant added. 6. The loose piece combination device according to any one of claims 1 to 5, in which some or all of the bodies in the body row are not linearly arranged.