JPH0443634B2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to increasing the efficiency of the measuring and blending process of raw materials in the production of compound feed.

(b) Conventional technology Conventionally, when weighing and blending the main ingredients in a batch type, it consists of only a plurality of hopper scales and a lower hopper, which are connected to a conveyor. All the hopper scales are activated at the same time, and the cumulatively weighed products are passed through the hopper and dropped onto the conveyor all at once, without any mixing operations.
In addition, during the weighing cycle from one batch to the next, a series of hopper scales,
This is done after the hopper and conveyor are all empty.

(c) Problems to be solved by the invention In this way, since the hopper scale supplies the individual products to the conveyor as they flow, it takes time to mix them precisely in the next blending process. operation or a two-step compounding operation. In addition, the batch weighing cycle requires a series of weighing and transport facilities to be all empty, and therefore has the disadvantage that it takes a long time, ranging from several minutes to several minutes.

The object of the present invention is to improve the efficiency of the weighing and blending process by supplying the weighed items to a conveyor while being easily mixed, and by shortening the weighing cycle.

(d) Means for Solving Problems To explain this invention with reference to the drawings, first, the hopper scale 2 is connected to the chute 1 under the raw material bin.
There is a mixing plate 3 on top of the hopper 4 below it.
Further, a feeder 5 is provided at the bottom and is further connected to a conveyor 6. The installation intervals of the plurality of hopper scales 2 are equal, the speed of the conveyor 6 is constant even if a plurality of lines are provided, and the flow rate of the feeder 5 can be set freely.

(e) Action First, the hopper scale 2 located at the most upstream side of the conveyor 6 is started. Next, when the transported object reaches the position of the next hopper scale 2 from the position of the first hopper scale 2 by the conveyor 6, the second hopper scale 2 is activated.

Thereafter, the downstream hopper scales 2 are activated in sequence at the same timing. The time required from the start of measurement to the end of measurement with Hopper Scale 2 varies depending on the type of thing to be measured, the size of the measured value, physical properties, etc., but after the measurement is completed, there is a waiting period, and then the Hopper Scale 2 Slide it to eject at the startup timing. Further, the feeder 5 is calculated in advance so that the discharge is completed according to the time of the metering cycle, and the required rotation is applied to each of the feeders. The weighed items discharged from the hopper scale 2 hit the mixing plate 3 installed at the top of the hopper 4, are mixed and stored in the hopper 4, and at the same time, the rotating feeder 5 controls the flow rate proportionally to the measured value. and is dropped onto the conveyor 6. In this way, from Hopper Scale 2, which is the most upstream,
The objects dropped onto the conveyor 6 merge one after another at the next hopper scale 2, forming a layered flow band overlapping the conveyor 6. Moreover, this flow band can be divided by making the discharge completion time of the feeder 5 shorter than the metering cycle, so that the conveyor 6
In addition, the next batch will not overlap and be disturbed,
The weighing cycle between batches can be significantly shortened.

(f) Example When manufacturing 60 tons of compound feed for adult chickens designed to yield 2.0 tons per batch using 2 and 11 integrating hopper scales of 1.5 tons, 1.0 tons, and 0.5 tons, the hopper Scale 2 installation interval 5m, width
Mixing plates 3, which were made by tilting 40 cm iron plates at 60 degrees and arranged horizontally at regular intervals in a symmetrical manner, were installed 50 cm below the upper surface of the hopper 4. In addition, the rotary feeder 5 with a capacity of 30 and 20 is installed at the bottom of the hopper 4.
28r.pm, minimum 6r.pm, and the speed of conveyor 6 is set to 30m/m, the weighing cycle is 120 seconds, the startup interval between hopper scales 2 is 10 seconds, and the speed of conveyor 6 is 90m/m. Second-long laminar flow bands were created one after another with 30-second break times, and were completed in 60 minutes.

(g) Effects of the Invention As explained above, in this invention, most of the measured items are mixed before being transferred from measurement to the next blending process, so the subsequent blending process can be simplified to less than half of the normal blending process. This can significantly save equipment, time, and energy. Conventionally, the batch cycle in a large amount of main compound weighing process is generally 5.
However, according to the present invention, a 2-minute cycle is sufficient, making the measuring and blending process more than twice as efficient.

[Brief explanation of drawings]

The figure shows a sectional view of the structure of the present invention. 1...Shoot, 2...Hopper scale, 3
...mixing board, 4...hopper, 5...feeder, 6...conveyor.

Claims (1)

[Claims] 1 Hopper scale 2 and hopper 4 below it
A feed measuring and mixing method comprising a mixing plate 3 provided at the upper part of the hopper and a feeder 5 at the lower part of the hopper, and characterized in that the following hopper scales 2 and below are activated in sequence according to the transport speed of the transport conveyor 6. .