JPH0318519A - Silo - Google Patents

Abstract

PURPOSE:To deliver a constant quantity in a silo providing with a disc column, a turning body, and a suspended screw conveyor, by always rotating the turning body at working time, and moving the screw conveyor up and down according to the work at a speed of biting depth per one rotation of the screw conveyor. CONSTITUTION:A turning body 6 is always turned at working time, and a screw conveyor 7 is moved up and down according to the work. The elevatable speed V of this time of the screw conveyor 7 (7a, 7b) is instituted as H/T, where H is the biting depth of the screw conveyor, namely, vertical height between the bottom face of the screw conveyor 7a, 7b and the top face of the load before work, and T is the time required for rotation of the screw conveyor 7 by 360 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a silo for storing loads of parallaxes (including powder), and in particular relates to unloading of loads.

[Conventional technology]

As shown in Japanese Unexamined Patent Publication No. 58-17021, this type of silo has a cylindrical side wall, a disk column in which a number of disks are stacked vertically with gaps in the center thereof, and an upper end of the disk column. a revolving body supported on the upper end of the side wall and revolving around the center of the side wall; a screen-conveyor device suspended from the revolving body so as to be able to rise and fall freely and disposed between the disc column and the side wall; means for supplying loads from the upper end of the column to a screw conveyor device near the disc column. The lower end of the disc column is the outlet. A screw conveyor device has a plurality of (usually two) screw conveyors installed in parallel in the horizontal direction.

To load a load, the screw conveyor device is operated while the next time the body is turned to one side, and in this state, the load is supplied from the load supply means. In the screw conveyor device, one screw conveyor is stopped and the other screw conveyor conveys the load from the disk column side to the side wall side. When the revolving body rotates 360 degrees, the loading operation such as turning is stopped, and the scraper/conveyor device is raised by the amount that the upper surface of the load becomes higher due to loading.

Then resume work.

In the unloading operation, the revolving structure is rotated in the opposite direction, and the two screw conveyors of the screw conveyor system are operated. The direction of rotation of the screw conveyor is opposite to that during loading. The load is sandwiched between two screw conveyors and transported to the disk column side, where it falls into the disk column. When the revolving body rotates 360 degrees, discharging work such as turning of the revolving body is stopped, and the screw conveyor device is lowered by the amount that the upper surface of the load is lowered by discharging.

[The problem that the invention attempts to solve]

After one rotation in both the loading and unloading operations, the rotation must be stopped and the screw conveyor device must be stopped. Therefore, the work is not continuous. Particularly, during the dispensing operation, the dispensing amount is intermittent and the dispensing is not a fixed amount, which is inconvenient.

An object of the present invention is to enable fixed-quantity dispensing.

[Means to solve the problem]

In the present invention, the screw conveyor device is constantly lowered during the dispensing operation, and its descending speed is determined by dividing the dispensing height H of the screw conveyor by the time T required for the conveyor device to turn substantially 360 degrees. It is.

[For production]

Since the screw conveyor device is constantly descending, there is no need to stop the rotation of the revolving body (this makes it possible to dispense a fixed amount).

If the height is constantly raised during loading, it can be carried out continuously and the loading height will be uniform.

〔Example〕

The present invention will be explained below with reference to an embodiment shown in the drawings.

The silo has a cylindrical side wall 1, a disk column 2 in which a number of disks are vertically stacked with gaps in between, and a cylindrical side wall 1.
A screw conveyor 3 for dispensing installed at the lower end of the disc column 2, a conveyor 4 connected to this, and a side wall l.
A revolving body 6 supported at the upper end and rotating around the center of the side wall l, and a screw conveyor system 1t7 suspended from the revolving body 6 so as to be able to rise and fall freely and disposed between the disk column 7 and the side at. , screw conveyor equipment! A lifting device 8 is installed on the revolving body 6 to raise and lower the screw conveyor iii 7 and suspends the screw conveyor iii 7 via a lobe 8a, and a screw conveyor iii 7 is installed from the upper end of the disk column 2 toward the disk column 2. It consists of a means for supplying the load. The supply means includes a conveyor 11, a chute L2
．． It consists of a screw conveyor 13 and a chute 14.

In the screw conveyor device 7, sets of screw conveyors are installed on the left and right sides of the disk column 2, respectively. Each set consists of two screw conveyors 7a, 7b. Each set of screw conveyor 7a,
The operation of 7b is the same as the conventional one. The revolving body 6 is installed so as to suspend these two sets of screw conveyors.

FIG. 3 is a block diagram of a control device for each jar in the silo, and the control computer gives commands to the control device for each device based on a loading or unloading work command. A control device for controlling the motor 31 of the hoisting device 8 &
The operation command, the upward or downward movement direction, and the movement speed V are output.

Calculation 9.30 requires that the rotating body be constantly rotated during loading and unloading work, and that a screw conveyor system of 1t7
constantly move at a speed ■ in the direction corresponding to the purpose of the work.

Note that other equipment is not illustrated in FIG.

The speed V of the rise or fall will be explained.

The operating speed at the time of dispensing, that is, the screw conveyor device 7
The descending speed V is determined by the following equation.

V=H/T ・・・・・・・・・・・・1・・・・・・・・・・ Ill 22, H: Biting depth of screw conveyor (as shown in Figures 3 and 4) In, screw conveyor 7
a, 7b and the upper surface A of the load before work) T: Time required for the screw conveyor device 7 to turn substantially 360 degrees (in the above embodiment, the screw conveyor 7 rotates 180 degrees (The time required for a 180 degree turn)

According to this structure, for example, in the unloading operation, the coal turning body 6 is constantly rotated 1IVR, and the scraper and conveyor WL7 are constantly lowered at a speed V, so that the coal turning body 6 is rotated substantially 360 degrees. There is no need to stop the rotation of the revolving body in this state, and a fixed amount can be dispensed.

Since the rotation of the rotating structure does not stop even during plowing, the height of the turning is more uniform compared to when the rotating structure stops rotating while the load is being supplied and the screw conveyor continues to operate. .

〔Effect of the invention〕

According to the present invention, loading and dispensing can be performed satisfactorily with a simple structure, and in particular, when used for dispensing, it is possible to perform fixed-quantity dispensing.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the equipment in the silo, FIG. 2 is a sectional view taken along the line T1 in FIG. 1, and FIG. 3 is a block diagram of the control device. FIG. 4 is an explanatory diagram of the unloading operation, and FIG. 5 is an explanatory diagram of the loading operation. l...Side wall. 2... Song disc column, 6...
...Swivel body, 7...Screw conveyor device s7m+7Ol figure O3 eye O4 Figure 42 Prisoner 45 Figure

Claims (1)

[Claims] 1. A cylindrical side wall, a disk column in which a number of disks are vertically stacked with gaps in between, and is supported by the upper end of the disk column and the upper end of the side wall, and rotates around the center of the side wall. A revolving body, a screw conveyor device suspended from the revolving body so as to be freely raised and lowered and disposed between a disc column and a side wall, and means for supplying a load from an upper end of the disc column to the screw conveyor device near the disc column. In this silo, the rotating body is always rotated during work, and the screw conveyor device is always raised and lowered in the vertical direction according to the work, and the speed of the raising and lowering is set such that the screw conveyor device turns substantially 360 degrees. A silo characterized in that the vertical height H between the bottom surface of the screw conveyor and the top surface of the load before work is divided by the time T required for the process.