DE8807506U1 - Grain batch dryer - Google Patents

Description

Applicant: Engelbrecht + Leiranerbrock GmbH +Co., Neuerostraße 6, 4520 Meile

Grain batch dryer

The innovation is based on a Satzi dryer for grain, in whose drying chamber horizontal rows of supply channels open at the bottom and fed with drying air under pressure from a distribution chamber and rows of offset discharge channels open at the bottom and connected to the atmosphere are arranged alternately, whereby the ends of the supply channels of at least the upper row of supply channels can be closed by flaps mounted on rotatable shafts.

In the aforementioned batch dryer, the drying air from the supply channels open at the bottom is forced through the grain to the upper and offset discharge channels connected to the atmosphere. As the grain loses volume during drying, the level in the drying room drops, so that the drying air from the supply channels only flows through a thin layer of grain or no grain at all and is discharged directly into the open air via the row of channels above. For this reason, at least the upper supply channels must be closed off from the drying air distribution room.

can be closed as soon as the grain level drops, which is done by flaps that are lined up on a common shaft and pressed by hand against the channels to be closed and then locked in this position so that the flaps close the feed channels against the distribution chamber. It has been found that the sealing of the flaps, which may also be provided with seals, in the known batch dryers is not very good, so that drying air is lost.

The purpose of the renovation is to significantly improve the sealing of the flaps of the upper supply ducts against the distribution chamber of the drying air in batch dryers of the type mentioned above.

This problem is solved by the characterizing features of protection claim 1.

This solution means that every flap is brought into contact with the limiting edge in the area of the open channel end over its entire circumference as soon as the flaps are closed by arbitrary pivoting when the grain level in the drying room drops, since the pressure of the drying air in the distribution room now acts on the entire surface of the flap to seal it through the articulated connection with the support lever, and the hinged flaps no longer need to be locked in place as the articulated suspension compensates for any inaccuracies in the support.

The innovation is described below using the drawings. They show:

figure

a side view of the batch dryer with the drying air distribution chamber upstream of the drying chamber with a partially broken-off side wall in the middle section of the batch dryer, a cross-section along line II-II of Figure 1» a view from the section line IH-III in an enlarged representation,

an enlarged section along the line XV-IV cisr Fi ⁰ Ur 3 =

Figure 2
Figure 3

Figure 4

The batch dryer for grain consists of a container 1 that holds the grain to be dried, with an upstream chamber 3 that distributes the drying air supplied under pressure at 2, to which horizontal, parallel supply channels 4 that run through the container 1 and are closed at the end are connected in parallel rows. Above each row of air supply channels 4, there are discharge channels 5 that are offset from the channels 4 and that open out into the open, facing away from the distribution chamber 3. The channels 4 and 5 are open at the bottom and advantageously have the shape of an angle in cross section.

In the air distribution chamber 3, in front of the open sides of the supply channels 4 of at least the upper row of channels, closing flaps 6 are provided, which can be pivoted to a limited extent above the channels 4 with a bearing 8 that surrounds the cross shafts 7. When the flaps 6 are in the closed position, the associated distribution channel 4 is closed off from the drying air supplied. .

The flaps-6 of channels 4 of the upper channel row are

by a flat support lever 12 with the beam 7, which can be rotated from the outside by a lever or the like. Each support lever 12 is connected at the end by a joint

13 connected to the closure flap 6. At the beginning of the

To dry the grain, the flaps G of the upper row or rows of channels 4 are pivoted into the position shown in dashed lines in Figure 4. In order to limit the movement of the flap 6 against its support lever 12, the support lever 12 is provided at the free end with a winding that serves as a stop against the flap 6.

14. Furthermore, the support lever 12 is provided in the area of the attachment to the rotatable shaft 7 with an outwardly directed angle 15, the end of which acts as a stop against the boundary wall la between the

drying room and distribution room 3.

If the grain level drops too far during the drying process, the upper row of flaps is pivoted into the closed position in good time by means of the common shaft (solid lines in Figure 4). Each flap 6 can pivot to a limited extent around the joint 13, so that the pressurized drying air in the distribution chamber 6 then acts on the entire flap surface and brings the flap into sealing contact with the wall la.

Claims (3)

Applicant: Engelbrecht + Lemmerbrock GmbH +Co., Neuerostraße 6, 4520 Meile Protection claims 1. Batch dryer for grain, in the drying chamber of which horizontal rows of supply channels open at the bottom and fed with drying air under pressure from a distribution chamber and rows of offset discharge channels open at the bottom and connected to the atmosphere are arranged alternately, the ends of the supply channels of at least the upper row of channels being closable by flaps seated on rotatable shafts, characterized in that the flaps (6) are connected in an articulated, limitedly pivotable manner to a support lever (12) seated on the rotatable shaft (7). 2. Set of dryers according to claim 1, characterized in that the flat support lever (12) is provided with an angled portion (14) serving as a stop against the flap (6) facing away from the rotatable shaft (7) and outside the articulated connection (13). 3. Set dryer according to claim 1 and 2, characterized in that the support lever (12) is provided with an outwardly directed bend (15) in the area of its attachment to the rotatable shaft (7), the end of which serves as a stop against the boundary wall (la) between the drying chamber and the distribution chamber (3) when the flap (6) is open. It·· &Igr;<1· Il