JPS5925485Y2 - Continuous sand cleaning equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for cleaning settled sand deposited in a waterway, a treatment pond, etc., and particularly relates to a continuous sand cleaning device.

Conventionally, a device that collects inorganic sand (inorganic solids with a diameter of 0.2 mm or more) from sediment and separates it for 35 minutes (suspended substances other than the inorganic sand that are present in the sediment) has been installed in a cleaning tank with an upper part. A rotating shaft is inserted into the shaft, and a stirring blade is installed at the lower end of this rotating shaft.
A sand discharge pipe is installed at the bottom of the cleaning tank, and the sand that is put in together with water is stirred by a stirring blade and divided into 35 minutes and inorganic sand.
After 5 minutes, the water overflows from the top of the cleaning tank, and the inorganic sand is collected at the bottom of the tank and extracted from the sand drain pipe.

However, if the coarse debris mixed in the sand that is introduced hits the stirring blades rotating in the middle of the tank, the stirring blades will be damaged, so a grid must be installed upstream of the cleaning tank to prevent coarse debris.

Next, the sieve residue in the sand must be scooped out with a net, as it may clog the 35-minute overflow ditch.

Furthermore, since the stirring blade rotates in a circular manner on the inside of the side of the tank in order to horizontally swirl the sediment into the tank, continuous cleaning is impossible due to the drawbacks such as the lack of mutual collision of sediment and the low cleaning effect. It was in a bad condition.

The object of this invention is to eliminate the above-mentioned drawbacks and to provide a cleaning device capable of continuously cleaning sediment.

The idea behind this idea is to rotate an agitation blade along one side of the tank and install a grid on the other side to separate the inside of the tank from the overflow area, and feed the sediment into the tank, which is nearly full. However, in order to alleviate the collision between the stirring blades and the coarse debris in the sediment during sand cleaning, we tried to carry out a cleaning process that continuously guides the washed sand out of the tank by separating the coarse debris from the sieve residue using a grid. That's what I do.

Next, the configuration of an embodiment of this invention will be explained based on the drawings.

Fig. 1 is a plan view of the cleaning tank of this embodiment, Fig. 2 shows the front of Fig. 1, Fig. 3 is the right side of Fig. 2, Fig. 4 is the back, and Fig. 5 is the left side. Each side is shown.

In FIG. 1, the tank bottom 1 forms a mid-low valley shape with a front slope 1a, a side slope 1b, and a front slope 1C.

The front slope 1a is connected to the lattice surface 2 in FIG. 2, the lateral slope 1b is connected to the right side 3 in FIG. 3, the front slope 1C is connected to the back surface 4 in FIG. The slope 1C is connected to the left side surface 5 in FIG.

The right side surface 3 and the left side surface 5 are connected to the lattice surface 2 via an inner slope 6, and to the back side 4 via an inner slope 7.

The tank 8 formed by the tank bottom 1, the grid surface 2, the side surfaces 3, 4.5, and the slopes 6, 7 has a rotatable stirring blade 10 along the back surface 4 inserted into the tank 8 via a bearing 9. establish.

Incidentally, an overflow trough 12 facing the grid surface 2 and equipped with a sand ejector 11 is naturally connected to the outside of the tank 8 for collecting washed sand and discharging washing water.

The operation of the above configuration will be explained next.

When sediment is put into a tank 8 that is almost full of water and the stirring blade 10 is rotated in the direction of the arrow R, the liquid in the tank flows into a rotating flow R that rotates together with the stirring blade 10 and from the outer periphery of the stirring blade 10 to the bottom of the tank. 1 and the left and right side surfaces 3 and 5 toward the grid surface 2, and a suction flow P flowing from the front of the stirring blade 10 and the liquid level of the tank 8 toward the center of the stirring blade 10, A combined flow S (only the numbers are given and illustrations are omitted) of the rotational flow R and the extrusion flow O is along the inner surface of the tank 8, and a combined flow M of the rotational flow R and the suction flow P is at the center of the stirring blade 10. When heading to
intersect with

The intersection of the combined flow S and the combined flow M causes the sediment to be disturbed and collided, and the 55 particles adhering to the periphery of the inorganic sand are peeled off and separated.

The stirring blades 10 that rotate along the back surface 4 flow the coarse garbage through the stirring liquid in the tank 8 even if coarse garbage is mixed in the sand to be fed, so that the stirring blades 10 and the coarse garbage are not directly connected to each other. Mitigate collisions and protect against damage.

Since the lattice surface 2 intersects with the rotating flow R, most of the combined flow S is circulated in the tank 8, and some of the inorganic sand and sand flow out of the lattice surface 2 together with water, and waste and other The sieve residue is retained on the lattice surface 2 (washing water overflows from the trough 12 for 55 minutes outside the lattice surface 2, and the washed inorganic sand is collected outside the trough 12 by the sand remover 11).

The slopes 1a, 1b, IC, 6, and 7 eliminate the swirling flow in the dead area at the inner corner of the tank 8, guide the excess flow in the tank to merge with the rotational flow R and the suction flow P, and produce an agitation cleaning effect. improves.

As explained above, this design has an agitation side on one side of the tank with a shallow corner dead area, and one of the other sides is opened through a grid, which allows the mixing of sand in the input sediment. Direct collision between the coarse garbage and stirring blades is prevented, and the intersecting turbulent flows cause the settled sand to collide with each other, and the coarse garbage and sieve residue are continuously processed so as to be caught on the grid surface, so inorganic sand can be recovered freely. I decided to use a continuous cleaning device.

[Brief explanation of the drawing]

Figure 1 is a plan view of the embodiment of the present application, Figure 2 is a front view of Figure 1, Figure 3 is a right side view of Figure 2, Figure 4 is a rear view of Figure 2, and Figure 5 is a rear view of Figure 2. The left side view of FIG. 2 and FIG. 6 are diagrams showing the relationship with the outside of the tank. 2: Lattice surface, 3: Right side, 4: Dorsal side, 5: Left side, 6
゜7: Corner slope.

Claims (1)

[Scope of utility model registration request] A slope that lowers the middle of the bottom plate 1 so as to make the dead area at the corner of the cleaning tank shallower in a device for cleaning inclusions in sediment placed in a nearly full cleaning tank and recovering inorganic sand. 1
a, 1 b, IC, an inner slope 6 arranged at the front of the left and right side surfaces 3, 5, and an inner slope 7 arranged around the front slope 4,
A continuous sand settling and cleaning device characterized in that a stirring blade 10 is rotatably provided along a front slope 4, and a lattice surface 2 is provided in front of the cleaning tank to allow free circulation so as to divide the water area into the outside and outside of the tank.