JPS5847956Y2 - Drum classifier - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a drum-type classification device that is capable of recovering reusable sand from polluted water in a dehydrated state to the extent that it can be directly transported.

Conventional drum-type classification devices have been seen in which the sand in the polluted water is separated by a scraping plate inside the drum and then directly thrown into the discharge port, but the amount of sand scraped up by the scraping plate is still quite large. If the sand is directly loaded onto a truck or the like and transported in such a state, the vibrations during driving will cause the sand to flow and fall, contaminating the road, and the loaded weight will increase by the amount of excess moisture, causing serious problems. It was the economy.

Furthermore, as fine pollutants in the polluted water are separated and recovered along with the sand during the raking operation using the raking board, it has the disadvantage that it is difficult to obtain only the high quality sand necessary for reuse. .

In view of these drawbacks, the present invention provides a rewashing box at the point where the sand falls from the raking board, makes it possible to supply rewashing water to the rewashing box, and also equips the rewashing box with a vibrator for dewatering. An example of the implementation of the present invention will be explained below based on the drawings in an attempt to solve the above-mentioned drawbacks by linking conveyors. 1 is a cylindrical drum body, and the drum body 1 includes rollers on which a frame 2vc is installed. 3, 3', .
c to rotate the drum body 1 in a predetermined direction.

Further, one end surface of the drum body 1 is provided with a large diameter hole, and the other end surface is provided with a small diameter hole.The large diameter hole is used as a drainage lower, and the small diameter hole is used as a discharge port 8. A net for reinforcing the end portion is attached to 8, a substantially conical flange 9 is attached to the drain port γ, and a gutter 10 fixed to the frame 2 is provided below the flange 9.

In addition, a large number of through holes 11 are provided at approximately the center inside the drum body 1.
Scraping plates 12, 12', having 11'...
... are radially fixed to the inner periphery at appropriate intervals, and spirals in mutually different directions are formed between the scraping plates 12, 12'... and both ends of the drum body 10. A large number of guide vanes 13, 13', .

Reference numeral 14 denotes a support rod floatingly provided between both ends of the frame 2 so as to pass through the interior of the drum body 1. A polluted water inlet 15 is installed at the end of the support rod 14 on the drainage lower side. A gutter-shaped introduction plate 16 is led from the lower part of the opening 15 through the drainage lower to the vicinity of the scraping plates 12, 12', . . . inside the drum body 1 in a direction opposite to the direction of rotation of the drum body 10.

Also, inside the drum body 1, there are scraping plates 12゜12'.
Scraping plates 12, 12' are placed at the point where the sand falls due to...
A rectangular hopper having an opening medium thicker than the width of . . . A part of the rewashing box 17 is fixedly installed on the support rod 14, and a pipe supplies rewashing water from the outside into the rewashing box 17. 18
are connected to one end, and a discharge pipe 19 is provided at the other end for overflowing the polluted water in the rewashing box 17 and discharging it to the lower part of the drum body 1, and the supply water surface of the rewashing box 17 and A lid body 20 made of a large-mesh mesh is installed at the same height position to prevent water from scattering in the rewashing box 17 due to sand falling from the scraping plates 12, 12', etc. It's forcing me.

Reference numeral 21 denotes a conveyor, which is fixed to the support rod 14 in such a way that it slopes upward from below the rewashing box 17 and protrudes to the outside through the discharge port 8 of the drum body 1.
The lower end of the belt 22 of the conveyor 21 is held tightly by a rubber belt to prevent water from flowing out of the rewashing box 17, and is opposite to the rewashing box 17 of the conveyor 21. A vibrator 23 is installed at the position so that the entire belt 22 of the conveyor 21 can be vibrated.

Note that the conveyor 21 can of course be mounted so as to protrude toward the drain port 8 side.

Next, the usage state of the drum type classification device according to the present invention will be explained. When polluted water is caused to flow into the drum body 1 whose rotation is controlled in a predetermined direction by the drive unit 4 through the inlet 15 or the introduction plate 16, The sand in the polluted water settles to the bottom of the drum body 1, and as the drum body rotates 10 times, the guide blades 13,
13'...... allows the sand to move from both left and right to the center,
That is, it is collected on the scraping plate 12゜1z... and to some extent by the through holes 11, 11'... of the scraping plate 12゜12'... While being dehydrated, it is lifted upward along the inner peripheral wall of the drum body 1,
When they reach a predetermined height, they are sequentially dropped into the rewashing box 17.

Since the Sareta sand that is fed into the rewashing box 17 still contains fine contaminants, it is poured into the rewashing box 17 from the outside through a pipe 18.
By supplying re-washing water into the re-washing box 17, fine pollutants are floated and separated from the sand, overflowing from the discharge pipe 19 and returned to the drum body 1, while good quality sand that has settled at the bottom of the re-washing box 17 is It is deposited on the belt 22 of the conveyor 21 extending from the bottom of the rewashing box 17 to the outside, and at the same time, it is dehydrated by the vibration of the vibrator 23 while being transported to the outside of the drum body 1 and directly transferred to a truck etc. from the hopper 24 at the end of the conveyor. loaded.

On the other hand, the supernatant liquid of the polluted water in the drum body 1 also overflows the flange 9 of the drainage lower and flows out, and further flows out from the frame 2.
The water flows into the gutter 10 fixed to the wall and is discharged.

In short, the present invention has scraping plates 12, 12', .
are fixed radially and the raised plate 12.12
'...Guiding vanes 13°13' spirally rotated in opposite directions between the two ends of the drum body 10.
Since the plates 12, 12'... are installed upright, they can efficiently scrape up the sand that has settled at the bottom of the drum body 1.
...It can be collected on the top, and the scraping board 12, 12'...
Pipe 1 where rewashing water is supplied to the point where sand falls due to...
Since the rewashing box 17 is connected to
'... can be increased in width to improve the raking efficiency, and furthermore, in the re-washing box 17, fine pollutants can be washed and separated from the high-quality sand using re-washing water. In addition, since the rewashing box 17 is connected to a conveyor 21 that slopes upward from below and has an end protruding outside and is equipped with a vibrator 23, the rewashing box 17 is completely separated from the contaminated water. While the sand is transported to the outside by the conveyor 21, the particles are agglomerated by vibration, and the water content can be floated and separated. The conveyor 21 is slanted upward and its tip is located at a high place, so the conveyor 21 is in a state where it can be directly transported.
1 can be placed directly on a truck or the like.

Therefore, the present invention has great practical effects, such as being able to efficiently recover only good quality sand from polluted water in a coagulated state that has been sufficiently dehydrated.

[Brief explanation of the drawing]

The figures show an example of the implementation of the present invention; Fig. 1 is a partially cutaway front view of a drum-type classification device according to the present invention, Fig. 2 is a cross-sectional view taken along the line x-x of the same as above, and Fig. 3 is a left side view of the same as above. It is a diagram. 1...Drum body, 12, 12'...
Scraping plate, 13.13'...Guiding blade, 17.
...Rewashing box, 18...Pipe, 21...
... Conveyor, 22 ... Vibrator.

Claims (1)

[Scope of utility model registration request] A scraping plate is fixed radially to the approximate center of the inner circumference of a drum body that rotates in a predetermined direction, and guiding blades are spirally rotated in different directions between the scraping plate and both ends of the drum body. A rewashing box is installed in which a pipe to which rewashing water is supplied is connected to the point where the sand falls by the raking board, and the rewashing box is sloped from the bottom to the top so that the end is outside. A drum-type classification device characterized by a connected conveyor that protrudes from the top and is equipped with a vibrator.