JPH0440744Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a specific gravity sorting device.

(Prior art) As seen in the conventional patent application No. 56-76043,
Several stages of classification towers are arranged in series with steps, and each classification tower is divided into a descending chamber and an ascending chamber by a partition wall, leaving a communication passage below. A movable partition plate is provided on the partition wall of the rising chamber for adjusting the rising flow rate,
A specific gravity sorting device is known in which a sieving device is provided in the overflow gutter of a rising chamber.

(Problems that the invention aims to solve) The structures described above are complex. Therefore, an object of the present invention is to provide a specific gravity sorting device with a simple structure.

(Means for Solving the Problems) The means of the present invention for solving the above problems is to arrange the inner and outer double cylinders so that the upper ends of the inner cylinders are higher than the upper ends of the outer cylinders, and to place the raw material above the inner cylinders. An inlet is arranged, and the lower end of the outer cylinder has a discharge nozzle for discharging water and heavy specific gravity materials to a transfer gutter, and an umbrella-shaped guide plate that allows vertical adjustment of the distance between the lower end of the inner cylinder and the outer cylinder. and an overflow gutter provided around the outer surface near the upper end of the outer cylinder, and connected to the overflow gutter of the classification tower,
The specific gravity sorting device further includes a sorting sieve connected to the upstream side of the transfer gutter.

(Function) In the specific gravity sorting device according to the present invention, the classification tower is formed into a double cylinder, inside and outside, and when raw materials are introduced from above the inner cylinder, the inside of the inner cylinder becomes a downward flow path, and the outer cylinder and the inner cylinder The upward flow path is defined as the upward flow path. Since the upper end of the inner cylinder is higher than the upper end of the outer cylinder, the water level between the outer cylinder and the inner cylinder is lower than the water level in the inner cylinder, so it contains light specific gravity substances and fine particles with heavy specific gravity. Water overflows from the top of the outer cylinder.

Materials with a specific gravity larger than the fine particles settle against the rising water flow in the ascending channel, and are discharged together with water into the transfer gutter through a discharge nozzle at the lower end of the outer cylinder.

The water overflowing from the upper end of the outer cylinder is sent from the overflow gutter of the classification tower to the sorting sieve, where it is passed through the sieve.Light specific gravity substances remain on the sorting sieve.The sieved water and fine particles with heavy specific gravity are , and is dropped onto the upstream side of the transfer gutter, where it joins the water containing heavy specific gravity substances discharged from the discharge nozzle. Heavy specific gravity substances are efficiently transported by the water sent from the sorting sieve.

In order to adjust the rising speed of the water flow between the outer cylinder and the inner cylinder, an umbrella-shaped guide plate is provided inside the outer cylinder. The distance between the umbrella-shaped guide plate and the lower end of the inner cylinder can be adjusted in the vertical direction, thereby making it possible to select the specific gravity of the heavy material that descends against the rising speed of the water flow.

(Example) The embodiments shown in the drawings will be described below.

In FIG. 1, A is a classification tower, which consists of an outer cylinder 1 and an inner cylinder 2. Raw materials are transferred from a raw material tank (not shown) through a pipe 3 and a receiving cylinder 4 to the inner cylinder 2.
is supplied to The inner cylinder 2 forms a raw material downward flow path a, and the space between the outer cylinder 1 and the inner cylinder 2 forms a raw material upward flow path b. Since the upper end of the inner cylinder 2 is higher than the upper end of the outer cylinder 3, the water level between the outer cylinder 3 and the inner cylinder 2 is always lower than the water level in the inner cylinder 2, so water flows through the raw material downward flow path a. and overflows from the upper end of the outer cylinder 3 through the raw material ascending flow path b.

Between the lower end of the inner cylinder 2 and the inner surface of the lower end of the outer cylinder 1, an umbrella-shaped guide plate 5 is provided with four adjustment bolts 6 on the front, rear, left and right sides.
It is attached to the outer cylinder 1 so that it can move up and down. For the sake of explanation, the adjustment bolt on the front side is omitted in FIGS. 1 and 2.

As shown in FIG. 2, one end of each adjustment bolt 6 is joined to the lower surface of the umbrella-shaped guide plate 5, and is threaded from the middle to the other end. Each adjustment bolt 6 is
At the bracket 7, on the outside of the outer cylinder 1, a nut 8,
It is screwed into 9.

The bracket 7 has a tube end portion 7a communicating with the inside of the outer tube 1, and a tip portion 7b of the bracket 7.
It has a structure in which the umbrella-shaped guide plate 5 is moved up and down by turning the nuts 8 and 9 screwed to the adjustment bolt 6 between them, and the structure is such that the umbrella-shaped guide plate 5 is moved up and down. By interposing the gasket 10 in the outer cylinder 1, water does not leak from the outer cylinder 1, and the umbrella-shaped guide plate 5 is attached so as not to move up and down.

A lower nozzle 11 is provided at the lower end of the outer cylinder 1, and water and particles discharged from the lower nozzle 11 are received by a gutter 12 and transported. This lower nozzle 11 can be replaced with inner diameters of various sizes.

An overflow gutter 13 is provided around the upper end of the outer cylinder 1 to receive overflowing raw material.
The overflow gutter 13 is fixed to the outer cylinder 1, and three support plates 14 extend above the outer cylinder 1 from the outer periphery of the overflow gutter 13 to support the receiving cylinder 4.

An adjustment bolt 15 is provided in the middle of each support plate 14, and its lower end is attached to a flange 16 at the upper end of the inner cylinder 2 with nuts 17 and 18. By turning the nuts 17 and 18, the position of the inner cylinder 2 relative to the outer cylinder 1 can be changed up or down.

A screen 19 is connected to the overflow gutter 13 to allow overflow to flow into it. Below the screen 19 is a hotsper toy 20.
is provided and connected to the gutter 12. A gutter 21 is connected to the lower end of the screen 19 to collect large particles remaining on the screen 19.

The screen 19 is attached to the support column 22 with the rotation pin 2
It is rotatably attached via 3. 24
is a stopper for stopping the screen 19 in a fixed position.

Since the screen is a sieving device, a conventionally known mechanism for swinging the screen surface can also be used.

Hereinafter, the operation of the specific gravity sorting device of this embodiment will be explained.

When the raw material is fed into the inner cylinder 2 through the pipe 3 and the receiving tube 4, passes through the raw material downward flow path a, and reaches the raw material upward flow path b, the heavy and specific gravity materials with large particle diameters are absorbed by the water flow in the raw material upward flow path b. It sinks against the rise and flows down into the pressure chamber 27 at the lower end of the outer cylinder 1. The heavy specific gravity material is discharged from the lower nozzle 11 and flows into the gutter 12.

On the other hand, light specific gravity substances and heavy specific gravity substances with small particles are
Overflows from the upper end of the outer cylinder 1 into the overflow gutter 13,
It is passed through a screen 19. Here, large particles of the light specific gravity substance and small particles of the heavy specific gravity substance are separated, and the small heavy particles, which are the product under the screen 19, flow together with the overflow water into the gutter 12 via the hopper toy 20.

The efficiency of sorting on the screen can be increased by shaking the screen surface.

The gutter 12 is further connected to the next classifier, scraper, etc. (not shown), and the product is finally separated into sediment and washing water and taken out. Furthermore, the light specific gravity substances collected in the gutter 21 are discarded.

In addition, by moving the inner cylinder 2 and the umbrella-shaped guide plate 5 up and down, the rising speed of the water flow can be adjusted, and thereby the specific gravity of the substance to be sorted can be arbitrarily set. .

Furthermore, by selecting the inner diameter of the lower nozzle 11,
The rising speed of the water flow can also be adjusted by adjusting the water content of the specific gravity material to be discharged.

Furthermore, in order to raise and dissipate the air bubbles generated when the raw material is inputted from the raw material input pipe 3 within the inner cylinder 2 as much as possible, and to prevent the air bubbles from entering the ascending flow path b and interfering with the settling of heavy specific gravity materials, The height of the inner tube 2 relative to the outer tube 1 can be adjusted.

As mentioned earlier, in this example, the difference in sedimentation speed due to the specific gravity of the substance is used to increase the water flow upward flow path b.
Only heavy specific gravity substances that settle against the upward flow of water are collected. Therefore, if you choose the rising speed appropriately,
Precipitates only heavy substances with a certain specific gravity,
Light substances can thereby be disposed of together with the overflow.

In this embodiment, if the amount of water flowing into the specific gravity sorting device is constant, the width of the interval between the downward water flow path a and the upward water flow path b, that is, between the inner cylinder 2 and the umbrella-shaped guide plate 5, is By adjusting it, the rising speed of the water flow can be adjusted. Inner cylinder 2 and umbrella-shaped guide plate 5
A fixed amount of water passes through the gap per hour, so if the gap is narrow, the velocity will increase, and if the gap is wide, the velocity will decrease. Since this speed is the rising speed of the water flow in the lower part of the water flow ascending channel b, the specific gravity of the substance to be sorted is determined by adjusting the distance between the inner cylinder 2 and the umbrella-shaped guide plate 5.

This interval is determined by adjusting the inner cylinder 2 or the umbrella-shaped guide plate 5 by tightening the adjustment bolt 15 and the nut 1, respectively, as described above.
7 and 18, an adjustment bolt 6, and nuts 8 and 9, the position can be changed by moving up and down.

In addition, in this embodiment, the water overflowing from the overflow gutter 13 includes light specific gravity substances that have risen without being able to resist the rising speed of the water flow in the water flow rising channel b.
and fine-grained gravity substances. The overflow water is sent from the overflow gutter 13 to the screen 19, and the light specific gravity substances remain on the screen 19, and the fine particles of heavy specific gravity substances and water are collected in the gutter 12, so that the heavy specific gravity substances can be efficiently sorted. can.

Furthermore, since the water dropped through the screen 19 flows from the hopper toy 20 upstream of the location of the lower nozzle 11 of the gutter 12, the water content of the heavy specific gravity substances discharged from the lower nozzle 11 is small. Even if it is difficult to flow,
It can be transported by water flowing from the screen 19.

In this embodiment, after the operation of the specific gravity sorting device is finished, the screen 19 is rotated about the rotation pin 23 to take a vertical position as shown by the imaginary line in FIG. 1, thereby easily removing clogging. can be cleaned. During operation, the screen 19 is held in an inclined position as shown by the solid line in FIG. The fixed position is maintained by a stopper 24.

3 and 4 are a partially enlarged front view and a partially enlarged plan view showing the stopper 24 portion, respectively.

In each figure, one end of the stopper 24 is pivotally attached to a arm 25 projecting from the middle of the support column 22, and a stop pin 26 projects from the other end in a direction parallel to the rotating surface of the stopper 24.

The stop pin 26 is fitted into a hole 19b at the lower end of the screen support frame 19a, thereby preventing the screen 19 from rotating and holding it in a fixed position.

It goes without saying that the present invention is not limited to the above-mentioned embodiments, and can be modified as appropriate within the scope of the gist of the present invention.

(Effects of the invention) According to the specific gravity sorting device according to the present invention, with a simple structure, substances with low specific gravity can be efficiently removed by classifying using the difference in sedimentation speed depending on specific gravity and using a screening sieve in combination. There is a characteristic that. Furthermore, by providing a mechanism to adjust the rising speed of water flow,
Mixtures with various specific gravity differences can be sorted.

In addition, by installing a sorting sieve connected to the overflow gutter, we have made it possible to collect even fine particles with low sedimentation speed, improving the efficiency of sorting, and furthermore, it is possible to collect fine grains with low sedimentation speed. By flowing water from the upstream side of the discharge nozzle, a sufficient amount of water can be obtained to convey the heavy specific gravity material discharged from the discharge nozzle without providing a separate means for supplying water for conveyance.

[Brief explanation of drawings]

FIG. 1 is a front view showing the entire specific gravity sorting device according to the present invention, with some members cut away. FIG. 2 is a partially enlarged front view showing the lower end portion of the outer cylinder of the same embodiment, with some members cut away. 3 and 4 are a partially enlarged front view and a partially enlarged plan view showing the stopper portion of the same embodiment, respectively, and FIG. 4 shows a part of the screen support frame cut away. 1... Outer cylinder, 2... Inner cylinder, 3... Pipe, 4...
... Receiver, 5... Umbrella-shaped guide plate, 6... Adjustment bolt,
7...Bracket, 8, 9...Natsuto, 10...
Patchkin, 11...Lower nozzle, 12...Gutter, 1
3... Overflow gutter, 14... Support plate, 15
...Adjustment bolt, 16...Flange, 17, 18
... Nut, 19 ... Screen, 20 ... Hopper toy, 22 ... Support column, 23 ... Rotating pin, 24 ... Stopper, 26 ... Hole.

Claims (1)

[Scope of utility model registration request] The inner and outer double cylinders are arranged so that the upper end of the inner cylinder is higher than the upper end of the outer cylinder, the raw material input port is placed above the inner cylinder, and the lower end of the outer cylinder is used for transferring water and heavy specific gravity materials. It is equipped with a discharge nozzle for discharging into a gutter, an umbrella-shaped guide plate in which the distance between the lower end of the inner cylinder and the lower end of the outer cylinder can be adjusted in the vertical direction, and an overflow gutter provided around the outer surface near the upper end of the outer cylinder. What is claimed is: 1. A specific gravity sorting device comprising: a classification tower, and a screening sieve connected to an overflow gutter of the classification tower and further connected to an upstream side of a transfer gutter.