DE3428672A1 - Automatic cereal-inflow regulation for a cereal-cleaning machine - Google Patents

Abstract

Located next to the feed roller (4), Figure 2 and Figure 3 of the drawing, is the so-called feed flap (5), Figure 3, which is loaded by the weight of a lever arm and which has to be opened approximately 20 to 40 mm according to the type of cereal and the power of the machine, so that the cereal can fall in a uniform stream through the vertical sifter onto the screening unit. In a change of cereal, because of the different apparent weight of the individual types of crop, the feed flap has to be reset repeatedly by hand and readjusted during the cleaning process. This is no longer necessary with the automatic mechanism. <IMAGE>

Description

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Title:

Automatic grain feed regulation for grain cleaning machines.

description
mechanically:

The fork head of the spindle motor is attached to a fixed point. Because the spindle As the motor moves in and out, the motor moves back and forth on the rail. That The weight of the motor causes the adjustment to open and close the feed flap.

description
electrical:

Everything is dead when the machine is empty. When the grain level in the entry area of the grain has reached the empty indicator, the first contactor switches on. Nothing else happens yet. If the grain level continues to rise and reaches the full detector, the 2nd contactor is activated. The 1st clock generator is now working and the spindle motor moves cyclically to the pivot point, ie the spindle moves together. The weight of the motor slowly pulls itself closer to the axis and the feed flap slowly opens more. If the opening is not yet large enough to ensure that there is enough grain throughput, the grain level continues to rise and reaches the jam alarm. This jam alarm interrupts the time cycle and the spindle motor moves closer to the pivot point without delay, ie the spindle moves completely together.

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The counterweight is thus very small and the feed gate opens through the Get reidegegendruck altogether. Because the feed flap is now fully open, the grain level is reduced again and falls below the empty indicator. The empty indicator again gives the 2nd clock “command. This extends the spindle so that the weight of the motor closes the feed flap again.

Task:

The task of the automatic grain feed regulation is to ensure optimum performance the machine is achieved, an operationally reliable system is guaranteed and none Backlogs and thus entrenchments arise.

Achievable benefit:

In the past, the gate weights had to be adjusted by hand, i.e. every type of grain has a specifically different weight, the weight settings and precise balancing had to be carried out with each crop rotation be made. This was very time-consuming and not fully functional, because there are also weight fluctuations within a grain type due to the different moisture levels appear.

The automatic grain feed regulation eliminates these disadvantages,

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Designations for the

Drawings Fig. 1, Fig. 2, Fig.

(1) = spindle motor

(2) = detector

(3) = control box (k) = feed roller

(5) = feed flap

(6) = grain feed

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Claims (1)

Claim: Generic term: Automatic grain feed regulation for grain cleaning machine. Identification parts: Characterized in that the automatic grain feed regulation for "grain cleaning machines from: 1 spindle motor (l) with fork head, which adjusts the weight. Drawing Fig. 1 and Fig. 2 3 detectors (2) (1 empty detector, 1 full detector, 1 control detector),
Drawing Fig. 1 and Fig. 2 1 control box (3) (with timer and relay) drawing Fig. 1 and Fig. 2 is composed. EPO COPY