JPS586485Y2 - Draining device for sand transport machine - Google Patents

Description

[Detailed explanation of the invention] This invention removes the sediment that settles and accumulates in the sand washing section of the conveying trough.
In the sand settling and unloading machine, the flight conveyor installed in the trough scrapes up the sand to the higher side of the slope connected to the sand washing section and discharges it from the discharge port installed at the higher side end of the slope. This invention relates to a draining device that dewaters the settled sand while it is being raked up.

In this type of sand conveyor, when the flight conveyor installed in the trough is driven, the flights of the conveyor scrape up not only the sand but also the ice. During the scraping, sand flows down with water from both sides of the flight and is washed away. It has the disadvantage that it tends to return to the sandy part, making it impossible to effectively remove the settled sand, and that the removed part contains a large amount of water, making subsequent treatment difficult.

In view of the above points, the purpose of this invention is to provide a draining device that can effectively remove only sand with low moisture content.

Next, the details of an embodiment of this invention will be explained based on the drawings as follows.

In the figure, 1 is a sand transport trough, and a horizontal sand washing section 2 is formed on the bottom plate. Raw water is supplied from above the sand washing section 2, and the sand content in the raw water is transferred to the sand washing section. It is designed to precipitate on top of 2.

Further, the bottom plate of the conveying trough 1 is formed with a sloped part 3 which is connected to the sand washing part 2, and a discharge port 4 is formed at the end of the sloped part 3 on the high side.

The conveyor 5 installed in the sand conveying trough 1 moves in the direction of the arrow in FIG. 1, and a flight 6 moves on the bottom plate of the trough 1.
The sand sinking in the sand washing section 2 is scooped up to the high end of the slope section 3 and discharged from the discharge port 4.

A drainage zone A is provided on the inclined part 3 of the sand conveying trough 1 to dewater the sand that is being raked up by gravity.

This drainage zone A is constructed by arranging a plurality of pipes 7 in parallel in the width direction of the inclined portion 4 so that adjacent pipes 7 are brought into contact with each other, forming a large number of drainage holes 8 in each of the pipes 7, and forming a plurality of drainage holes 8 in each pipe 7. The lower end of the pipe 7 is projected to the outside of the trough 1, and the flights 6 of the flight conveyor 5 move while rubbing the upper outer periphery of the parallel pipes 7.

Now, when the sand raked up by flight 6 moves through the drainage zone A, the water raked up with the sand flows down through the drainage hole 8 formed in the pipe 7, so the water and sand are naturally separated and dewatering is carried out. Only the removed sand is scraped upward and discharged from the discharge port 4.

The pipes 7 constituting the draining zone A may be cylindrical as shown in the drawing, or rectangular tubes, and each pipe 7 is provided with a draining hole 8.

In addition, draining zone A is made using a square pipe with a square cross section.
With this configuration, the upper surface on which the flights 6 come into contact with each other can be shaped into a planar shape, so that it is possible to prevent the sand that is being raked up from returning to the sand washing section 2 through the gaps between the pipes.

As mentioned above, this invention is based on the slope part 3 of the sand conveying trough 1.
A plurality of pipes 7 are arranged in parallel in the width direction, and drain holes 8 are formed in each pipe 7, so when the sand is scraped up by the flight 6, the water that is scraped up at the same time as the sand flows down through the drain holes 8 and drains into the sand. Since the sand is naturally separated from the sand, it is possible to scrape up only the settled sand effectively and efficiently, and only the settled sand with a low water content can be taken out.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional side view of a sand settling and unloading machine implementing the device according to the invention, FIG. 2 is a vertical sectional front view of the main parts of the same, and FIG. 3 is a perspective view of the main parts of the same. 1...Sand transport trough, 3...Slanted section, 4...Discharge port, 5...Flight conveyor, A...Draining zone , 7...pipe, 8... drain hole.

Claims (1)

[Scope of utility model registration request] A sloping part is provided at the bottom of the sediment conveying trough, and a discharge port is formed at the high end of this sloping part, and the sediment that collects at the bottom of the trough is scraped up by a flight conveyor installed inside the trough, and is discharged from the discharge port. The sand settling and unloading machine is characterized in that a plurality of pipes are arranged in the width direction of the trough in contact with each other on the inclined part of the trough, and drain holes are formed in each of the pipes. Drainage device for sand transport machine.