JPS6018443B2 - Slag filtration device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a suspension of organic and inorganic particles (hereinafter referred to as a stock solution).

) is separated into moisture and fine particles, and the fine particles are dehydrated to form laminated fine particles (hereinafter referred to as cake).The filter body rotating type filtration device is described below in detail with reference to example diagrams. do. Stock solution supply port 11a and cake removal port 11b
The processing chamber 11 of the processing box 1 is divided into a processing chamber 11 having a filtrate discharge row 2a and a filtrate chamber 12 having a filtrate discharge row 2a.
Inside, two or more bodies 2, which will be described later, are arranged adjacently to form a filter body row, and these are arranged in two rows with appropriate distances apart, and the rotating shaft 21 of the filter body 2 is connected to both partition walls 10, 1. A transmission gear G is provided, which is supported in a hydrostatic manner so that the river can rotate freely, and has one end of its rotating shaft 21 protruding outside the processing box 1, and is rotated by a driving means (not shown) such as a motor. .

The filter body 2 has an annular piece 22 (of any shape such as a circle, an oval, or an egg shape) that is eccentric to the rotation axis 21, and a green outer circumference of the piece 22, which is more than the minimum distance m from the center of the rotation axis 21. Spacers 23 having a small diameter and not being eccentric may be used alternately (or in combination as appropriate).

) and fixed to the rotating shaft 21 with a key K. Also, some filter bodies 2' have filtrate guide holes 24 formed in the filter pieces 22' in the axial direction outside the outer periphery of the spacer 23; A fixed disk 29 is provided which holds the combination of the spacer 23 and the spacer 23 from both ends of the shaft in all directions,
A filtrate guide hole 24' corresponding to the liquid guide hole 24 in which the filter piece 22' is mounted is bored in the circular plate 29, and its thickness is slightly thicker than that of the partition wall 10. In the filter bodies 2, 2 adjacent to each other in the filter body row formed by a plurality of filter bodies 2, 2', two filter pieces 22, 22' are arranged on the outer periphery of the spacer 23 of the other filter bodies 2, 2'. Glue piece 22,
22, 22', and the border groove 25 formed between 22'
It is entering into.

In addition, the symbol S in the figure is a sealing material that connects between the periphery of the cake outlet 11b and the filter body closest to it and completely separates the undiluted solution from the crab cake at the cake outlet 11b, and F is a sealing material. The lid for closing the cake outlet 11b is opened manually or automatically under certain conditions.

Here, a body 2' on which a filter piece 22' having a filtrate guide hole 24 is mounted.
The outer peripheral edges of the pieces 22, 22' on which the filter pieces 2, 2' adjacent to the filter bodies 2, 2' are placed may or may not cross the liquid guide hole 24 on which the filter pieces 22' are placed, at the longest distance L from the center of the rotating shaft 21. There are cases.

The case where it is used is when filtration accuracy is not required so much, and it is used for filtration work that removes fine particles that collect around the filtrate guide hole 24 and does not require a temporary filtration period. . A pressure water injection nozzle 3 may be provided on the side of the filter body 2' as a means for cleaning the liquid guide hole 24 in which the filter piece 22' is placed.

Further, a pipe P' for adding the flocculant R may be connected to a pipe P connecting the stock solution storage tank T and the stock solution supply port 11a.
In addition, a cake outlet 11b provided with a valve V on the flocculant addition pipe P, and a device A that mechanically or mechanically detects the hardness of the cake and adjusts the amount of flocculant added by opening and closing the valve V. It may be provided. In addition, in the example diagram, two types of climbing bodies 2 are shown.
, 2' are roughly combined, but if all or most of the filter body 2, that is, the filter piece 22 without the filtrate guide hole 24 is used, the stock solution supply roller la should be placed opposite the cake outlet 11b. A sealing material similar to that of the cake discharge row 1b must be provided around the stock solution supply port 11a and on the filter body 2 closest to it.

Moreover, the filtrate discharge port 12a is provided at the back of the filter body 2 in the processing chamber 11 (the opposite part between the rows of filter bodies). 12
to guide the filtrate. Next, to explain the operation of the apparatus of the present invention, first, the stock solution is caused to flow into the processing chamber 11 from the supply roller la.

At this time, the lid F is closed, and each filter body 2, 2' is rotating in the direction of the arrow in the figure. Therefore, the stock solution was prepared for each filter body 2,
The filtrate enters the gap groove 25 of 2' and passes through the guide holes 24, 24' (in the case of the filter body 22 without the filtrate guide hole 24, between the filter piece 22 and the spacer 23 of the adjacent acid filter body 2). through the filtrate outlet 12a
It is unexpectedly ejected from. At the same time, the gap groove 25 is gradually filled with afterglow particles. Next, the spaces between the fine particles become filtration pores, allowing the moisture in the stock solution to pass through. The fine particles in the gap groove 25 accumulate on the outer periphery of the bodies 2, 2' scraped out between the rows of filter bodies by the adjacent filter bodies 2, 2' to form a cake, and are taken to the cake outlet 11b.
It is carried by the rotation of Then, when the cake outlet 11b is filled with cake and the cake prevents the stock solution from directly flowing out from the cake outlet 11b, the lid F is opened. The cakes come out one by one from the outlet 11b, and the rotational speed of the filter bodies 2, 2' is adjusted so that the cake pushed out from the rear does not always cause the undiluted liquid to flow out from the cake outlet 11b. Gap between filter bodies 2', 2 full 2
The fine particles remaining around the filtrate guide hole 24 in step 5 (if there is no filtrate guide hole 24, remaining around the outer periphery of the spacer 23) will harden during long-term operation.

Therefore, the part of the longest outer circumference green 1 of the pieces 22, 22' on which the adjoining bodies 2, 2' rests is pushed in whole or in part into the liquid guide hole 24 when it reaches the hardened particles (the guide hole 2
In the case of the filter body 2 without the spacer 23, new fine particles are layered again (all or part of the outer periphery of the spacer 23 is scraped off), that is, regeneration between the fine particles is attempted and continuous filtration is achieved. Furthermore, changing the rotational speed of the adjacent bodies 2 and 2' makes it possible to more reliably prevent the fine particles in the gap groove 25 from being diluted, and also to improve the filter body 2' having the filtrate guide hole 24. When in use, even if the guide holes 24 are not evenly distributed on the filter pieces 22', all the guide holes 24 will always have the longest outer circumference green 1 in the pieces 22, 22' on which the bodies 2, 2' are attached. will be reached. Here, the invention achieves its purpose.

[Brief explanation of the drawing]

Fig. 1 is a front sectional view, Fig. 2 is a x2-x2 current sectional view of Fig. 1, Fig. 3 is an omitted enlarged view of Fig. 1,
FIG. 4 is a partially omitted bottom view of FIG. 3. 1... Processing box, 2, 2'... Filter body, 11a
......Standard solution supply port, 1 1b...Cake removal port, 21...Rotary shaft, 22, 22'...
・Filter piece, 24...Filtrate guide hole, 25...
-Gap groove, 12a...filtrate outlet. Tea' figure *2 figure good J figure frequently bad

Claims (1)

[Scope of Claims] 1 A large number of filter bodies having filter pieces and gap grooves opened on the outer periphery alternately in the axial direction are arranged in a state in which the filter pieces are inserted into the gap grooves of mutually adjacent filter bodies, and the stock solution is supplied. In a filtration device disposed in a processing tube having a spout, a cake outlet, and a filtrate outlet, the outer periphery of the filter pieces has different distances from the center of the rotation axis, and the filter pieces are separated from adjacent filter bodies or individual filters. A slag filtration device characterized by different rotation speeds of the body. 2. In the device according to claim 1, all or some of the filter pieces of the filter body are provided with a filtrate guide hole connected to the gap groove in the axial direction, and one or both ends of the guide hole are A filtration device connected to a filtrate outlet. 3. A filtration filtration device provided with means for cleaning the filtrate guide hole of the filter body having the filtrate guide hole in the device according to claim 2. 4. A filtration filtration 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. A slag filtration device according to claim 4, which is provided with a manual cut that automatically adjusts the amount of coagulant added.