FI115158B - Device for cleaning grain in dryer and grain dryer - Google Patents

Description

115158

DEVICE FOR CLEANING GRAINS IN A DRYER AND HAND DRYER ANORDNING FÖR RENSNING AV SPANNMÄLSTORK

FIELD OF THE INVENTION

The invention relates to a device for cleaning grain in a dryer and a grain dryer comprising an upright dryer part and a grain elevator for recirculating the grain from the lower part of the dryer back to the upper part and / or for feeding or removing the grain from the lower part of the dryer part.

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BACKGROUND OF THE INVENTION

Woody cereals always contain more or less weed seeds. Common annual weeds are, for example, flour clover, whitetails, field violet and yard starch, and perennial weeds are common wheat, field thistle and fieldworm. Bread cereals are removed by weeding and sorting of weed seeds and other impurities. For this purpose, there are special devices which usually comprise multiple screens and a cleaning unit for efficient cleaning and screening. In addition to the need to invest in such equipment, cleaning and sorting also represent an additional work step, which of course significantly increases production costs. Thus, such special cleaning and sorting is not normally carried out on feed grain, for which cheap feed must be produced. For example, the dryer may be equipped with a so-called pre-cleaner, which, by means of air flow, removes much lighter material than the grain. However, the seeds of many weeds: * 'are so heavy that they do not disappear in the pre-purification, but remain in the grain of the grain, and then go first through the mill to the feed and then through the cow to the manure and the preceding. I * 25 lee manure with field. With current agricultural methods, weed seeds * ,,, · thus circulate and multiply in the cycle.

: '': SUMMARY OF THE INVENTION,,,

It is an object of the present invention to provide a solution which largely eliminates the above problems.

To achieve this object, the apparatus of the invention for purifying grain in a dryer comprising a vertical dryer section and an elevator for circulating the grain from the lower part of the dryer back to the upper part and / or feeding or removing the grain, a first tube leading from the lower A second tube leading from the top to the top of the dryer section, characterized in that it comprises 2,115,158 at least one of said tubes for perforating a grain finer than grain, such as weed seeds, for cleaning the grain.

To accomplish this purpose, the apparatus of the invention for purifying grain in a dryer comprising an upright dryer portion and a grain elevator for recirculating the grain from the lower portion to the upper portion and / or for feeding or removing the grain, a first tube leading from the lower characterized in that at least one of said tubes is provided with a perforation to purify the grain upon drying in a material finer than grain, such as weed seeds.

Preferably, the device or grain dryer according to the invention comprises a protective tube around said perforated tube for removing said finer material.

The invention can be used as a technical solution in new silo-type grain dryers and can also be easily retrofitted to similar in-use dryers. The grain is preferably purified at the same time as drying. The use of the solution reduces the need for water to use herbicides in agriculture. The solution is also very suitable for organic farming, which does not use chemical pesticides.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention and some embodiments thereof will be described in more detail below with reference to the accompanying drawings, in which: Figure 1 shows a conventional grain dryer, Figure 2 shows a grain dryer of Figure 1 modified according to the invention. '·: Side view and

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Fig. 4 shows an end view of the device of Fig. 3.

DETAILED DESCRIPTION OF THE INVENTION

The conventional silo-type grain dryer 1 shown in Figure 1 has a vertical silo-like dryer section 2 comprising a drying cell. Chicken will be brought to the kennel. 30 van 21 warm air from a hot air generator such as an oil boiler. The dryer part is supported by a support structure 4 and has a funnel-shaped lower part 6, from which a tube 7 leads to the lower part of a grain elevator 8, a box, a container or the like 9. The cups rotating the elevator lifting and lowering channels 10 11, from which the distribution valves 12 direct the grain either back to the upper part 3 of the dryer section 2 or, if the grain is;

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The tube 13 directs the grain back into the dryer. At the lower end of the tube is a so-called pre-cleaner 14, which removes grain lighter material from the grain by air flow.

The grain can also be fed into the dryer by means of an elevator 8 by feeding it into a box at the bottom of the elevator or the like 9, from which the elevator lifts it up and through a pipe 13 5 to the dryer part. To this end, a hopper may be attached to the box 9 into which the cereals brought for drying are poured. As stated above, the dryer can also be emptied by means of an elevator and manifold valves. The pipe 7 may also serve as a drain pipe. The lower part 6 of the dryer section 2 has a feeding device for controlling the rotation speed of the grain. For example, the usual rotation speed is 1 rpm, and grains using a conventional drying air temperature of 70 to 80 ° C, depending on the initial humidity, need to be recycled 4 to 6 times.

Both the drain tube 7 and the fill tube 13 can be replaced by the device according to the invention as shown in Figure 2. The tube 7 is replaced by a torn screen tube 7S and surrounding protective tube 16 and tube 13 respectively by a screen tube 13S and surrounding protective tube 15. FIGS. -15 possible implementation.

The screen of the tube passing through the grain 7S G through holes 17 from the finer material 16 will face the space between the sieve pipe and the ehytseinäisen protective tube 18 and exits the direction of the arrow W shown in the lower end of the protective tube or a suitable container, for example a trailer or a large sack. The screen tube 7S may be secured to the protective tube 16, for example, by means of fasteners 19 as shown in Figure 4, for example, the tubes may be made of a high-strength steel sheet, and a suitable material thickness, for example, is 2 mm. The size of the holes can be, for example, 1.6 ... 2.0 mm or even 2.5 mm depending on the amount and size of the grain material

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'* · To be deleted. In addition to weed seeds, small grain V •: grain may also be removed.

Of course, the device according to the invention can be implemented in many different ways. Esimerkik-

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• The shape and sizing of the screening and shielding tubes in your t # may vary, and the holes in the screening tubes may also be slot-like.

! The invention may vary within the scope of the appended claims.

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Claims (4)

Apparatus for cleaning grain in a dryer, comprising: a vertical dryer part (2) sanat 5 for circulating the grain from the lower part of the dryer part back to the upper part and / or for feeding or diverting the grain flour to an elevator (8). ), a first tube (7) leading from the lower portion (6) of the drying member (2) to the lower portion (9) of the elevator (8), and a second tube (13) leading from the elevator portion (8) to the upper portion ( 11) to the upper part (3) of the dryer section (2), characterized in that it comprises in at least one of said tubes (7S, 13S) a finer substance than cereal grains, as well as grains of weeds, permeable pouring (17) to clean the grain in the context of drying. Device according to claim 1, characterized in that it comprises a protective tube (15, 16) around the inclined tube (13S, 7S) for deflecting said finer substance. 3. Cereal drying dryer, comprising: a vertical drying portion (2) and for circulating the cereal from the lower portion of the drying portion back to the upper portion and / or to feed or divert the cereal meal to an elevator (8), a first pipe (7). ), which leads from the lower part (6) of the dryer part (2) to the lower part (9) of the elevator (8), and a second tube (13) which: leads from the upper part (11) of the elevator part (8) to the dryer part (2) ) upper part (3), characterized in that at least one of said tubes (7S, 13S) is provided with a finer substance:: than cereal grains, as well as grains of weeds, permeable pouring (17) to clear the grain: '*' : 25 meal in the context of drying. * «· * I : 4. Cereal drying dryer according to claim 3, characterized in that it comprises a protective tube (15, 16. around the inclined tube (13S, 7S) for diverting said finer substance) 1 · <· * · 1 · • i> |