JPS627070B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a chute for preventing dust generation and uneven particle formation.

In general, when transporting materials that are likely to become powdered or unevenly granulated is put into a tank, etc., if the drop from the chute of the transporter to the stacking surface is large, the impact of the fall or the air resistance during the fall may cause pulverization or uneven particles. It also generates dust, which can be extremely disadvantageous depending on the material being handled.

The present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and provides a chute for preventing powdering and dust generation, which is constructed so that the distance from the discharge port of the chute to the deposition surface can be reduced to almost zero. It provides:

In order to achieve the above object, the present invention employs an expandable chute that can be expanded and contracted depending on the amount of deposited material.

Hereinafter, details of the present invention will be explained in conjunction with embodiments shown in the drawings.

The figure is for explaining one embodiment of the present invention. In the figure, reference numeral 1 indicates a storage tank, which is formed as a hollow tank with a constricted top and bottom.

At the lower end of this storage tank 1 is a discharge opening/closing valve 2.
is installed. A charging chute 3 is fixed to the upper end of the storage tank 1, and a belt conveyor 4 is attached to the inlet side of the chute 3, to which a raw material 5 such as quicklime is supplied.

At the lower end of the input chute 3, a plurality of telescopic tubes 6a to 6c are attached to a so-called telescopic tube in a state in which they are slidably connected to each other, and constitute the telescopic chute 6 as a whole.

Projecting pieces 7 are provided on both sides of the lower end of the lowermost telescopic cylinder 6c, and the lower ends of wires 8 are connected to these projecting pieces 7. The upper ends of the wires 8 are respectively attached to the sheaves 9 and then wound around the drum of the winch 10. Therefore, winch 1
0 in the forward and reverse directions, the telescopic chute 6 can be freely expanded and contracted via the wire 8.

On the other hand, a high level switch 11 is installed in the middle of the cylindrical part inserted into the storage tank 1 of the input chute 3.
and a low level switch 12 are installed at a predetermined distance apart, and these switches can control the drive motor of the winch 10. Further, a raw material overflow opening/closing port 15 is provided in the middle of the input chute 3 for safety purposes in case the chute 6 becomes full of raw materials due to malfunction.

Next, the operation of this embodiment configured as above will be explained.

First, if storage tank 1 is empty, winch 1
When the wire 8 wound around 0 is loosened and the telescopic chute 6 is lowered to the lowest limit, and the raw material 5 is supplied from the belt conveyor 4 in this state, the raw material accumulates at the bottom of the storage tank 1 and is transferred into the telescopic chute 6. It is also full of raw materials. That is, the raw material in the telescopic chute 6 and the raw material in the tank are continuous.

The telescopic chute 6 is filled with raw materials 5 fed from the belt conveyor 4 sequentially from the bottom, and when the level reaches the upper limit level of the level switch 11, the high level switch 11 catches the raw material filling state and turns the winch on. The winch 10 winds up the wire 8 by applying an energizing signal to the drive motor 10 (not shown). Therefore, the telescoping cylinders 6a, 6b, and 6c forming the telescoping chute 6 are raised sequentially (in the order of 6c, 6b, and 6a) from the lower one, and the level of the high level switch 11 of the telescoping chute 6 is raised. Warm raw materials are stored in Silo 1
move inward. After that, the raw material level falls below the lower limit level of the low level switch 12, the low level switch 12 becomes an empty signal, and the winch 1
The power supply to the drive motor No. 0 is stopped, and the upward movement of the telescopic chute 6 is stopped. Thereafter, by supplying the raw material, the raw material is again filled to the level of the low level switch 12 and the high level switch 11, and the drive motor is restarted. In this way, the material gradually fills the hopper 1, and at the same time the telescopic chute 6 moves upward. As the raw material accumulates in the tank in this way, the winch 10 is turned to wind up the wire 8, and the wire 8 is pulled up sequentially from the lower telescopic tube 6c, so that the raw material in the telescopic chute 6 and the raw material in the tank are always kept in a continuous state. supply. That is, since the discharge end of the chute is always in contact with the surface on which the raw material is deposited, there is no drop and no pulverization, uneven grains, or dust generation occurs.

As is clear from the above explanation, according to the present invention, since the telescopic chute is used to supply the raw material without a drop between it and the stacking surface, powdering, uneven grains, and dust generation are avoided as in the conventional method. The raw material can be supplied without any generation.

[Brief explanation of the drawing]

The figures illustrate one embodiment of the invention. 1... Storage tank, 2... Open/close valve, 3... Input chute, 4... Belt conveyor, 5... Raw material,
6...Telescopic chute, 6a-6c...Telescopic tube, 7
... protrusion, 8 ... wire, 9 ... sheave, 10 ...
...Winch, 11...High level switch, 12
...Low level switch, 13...Stopper, 1
4... Suction port for dust collection, 15... Opening for raw material overflow.

Claims (1)

[Claims] 1. A telescopic chute consisting of a plurality of telescopic tubes slidably fitted is connected to the lower end of an input chute into which raw materials are supplied by a belt conveyor, etc., and a wire connected to the lower end of the telescopic chute is connected to a winch. In addition to winding the input chute, a high level switch and a low level switch are provided on the inner surface near the lower end of the input chute to detect the presence or absence of the raw material, and the winch drive motor can be controlled in accordance with the detection signal from the high level switch and the low level switch. A chute for preventing particle unevenness from powdering and dust generation, characterized by having an opening for raw material overflow in the middle part of the chute.