DE2950662A1 - PNEUMATIC REMOVAL DEVICE - Google Patents

Description

-r-

2 50662

Applicant: Engelbrecht + Lemmerbrock GmbH + Co. Neuerostr. 6, 4520 mile

Pneumatic removal device

The invention relates to a pneumatic device for removing and conveying dry straw or leaf material or from silage from a silo or storage stock by means of a suction head connected to a suction fan.

All previously known devices for pneumatic removal and conveyance of goods of the aforementioned type work so that the material in a silo or a material stock is fed to a suction head of a line leading to a fan, the material passes through the fan and then on the pressure side to a consumer, for example a Cowshed is funded. In many cases, the conveyed goods are dry stalks or leaf goods, for example from alfalfa, clover or the like, the leaf components of which are very strongly comminuted when the fan passes through them, so that, for example, the feed of a cowshed has a considerable part of the material in one is put in a condition that cannot be consumed by the livestock . Apart from this, the feeding of the material to be conveyed by means of compressed air in a cowshed leads to strong air movements that are harmful to the health of the cattle.

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The object of the invention is therefore to prevent strong conveying air movements in cattle stalls or other purposes To prevent clearing and at the same time to achieve that dry stalks and leaves are very gentle can be treated without crushing.

In the case of the pneumatic devices mentioned at the outset, this task is achieved in principle by the characterizing features of claim 1 solved.

As a result, the conveyed material reaches the container space below the dividing sieve by means of a vacuum, and the conveying air flows to the fan and from there into the open, so that when the container separating the conveyed material is arranged in one closed space, e.g. in a cowshed, no strong air movements can occur. The promoted good comes as a result, in no case does it come into contact with rotating parts of the fan, i.e. it arrives practically undamaged without crumbling into the container space under the sieve, from which it is removed falling down as soon as the negative pressure is lifted in the space above the sieve.

The invention is explained below with reference to the drawing, in which two exemplary embodiments are shown. Show it:

Figure 1 is a schematic vertical section through an upright receptacle for conveyed goods with attached

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closed suction fan,

FIG. 2 shows a schematic longitudinal section through a horizontal receiving container with an attached suction fan,

FIG. 3 shows a cross section through one of the two horizontal containers according to FIG.

According to the example of FIG. 1, there is a device through which silage material, above all, dry stalk or leaf material can be pneumatically removed from a silo or stock and sent to a destination, e.g. a cowshed should, 'without strong air movements in the stable can occur or the dry material is subject to damage or comminution.

According to Figure 1, e.g. in a high silo, the material in the silo is fed to a pneumatic suction head and over the suction line and a nozzle 1 advantageously conveyed tangentially into a container 2. This e.g. above a The feed aisle provided in a cowshed container 2 is divided by a sieve 3 into two spaces 4 and 5, wherein the upper space 4 is connected via a pipe 6 to a suction fan, the pressure side of which opens into the open.

The lower space 5 advantageously consists of one above the other

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" ⁷ " 2 3 5 0662

arranged , interconnectable ring elements, the number of which is adapted to the content of the room 5 required in each case. The bottom of the container consists of at least one, advantageously two pivoting flaps 8/9 »the area of which is larger than the cross section of the container 2, so that the lower edge of the container 2 forms a stop for the upwardly pivoted flaps 8 and 9, which are secured by hinges 1o are connected to the container 2 and are pivoted into the closed position by counterweights 11. As soon as the fan 7 is switched on, the container 2 is placed under negative pressure so that the flaps 8, 9 are pressed tightly against the lower edge of the container and can thus carry a corresponding weight of the conveyed material. It is now conveyed from the silo or a storage stock by the negative pressure in the lower container space 5 until the desired amount of material in space 5 is reached. A throttle valve 12 is then closed completely or partially by hand or by motor in the pipeline 6 and thus the negative pressure in the container 2 is canceled, so that the supplied weight of the goods can now pivot the flaps 8, 9 downwards into the position shown in dashed lines, so that the Material to be conveyed down undisturbed, e.g. falls onto a feed alley and can be picked up by the cattle.

The container 1 shown in Figure 1 can also be in a horizontal design with any length, e.g. corresponding to the length

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a feeding alley can be formed, as shown in FIG.

In this case, a horizontal container 2a over the from a silo or from a storage stock line 1 conveyed goods at one end into the lower space 5a of the through the horizontal sieve 3a divided container 2a promoted in that the upper container space 4a at the other end of the container to the to the fan 7 leading suction line 6 is connected.

The upper container space 4a is subdivided at appropriate intervals by hanging flaps 13 and according to this subdivision the container 2a is provided with bottom flaps 14 which, as already mentioned for FIG. 1, are held in their closed position by counterweights 15. The material to be conveyed is first fed to the end of the lower space 5a. When the filling reaches the point at which the first hanging flap 13a is located, this flap is swiveled into the dashed position by the dashed air flow indicated, so that the lower space 5a is then gradually filled. As soon as the filling reaches the point that corresponds to the last flap 13c, a switch 16a is actuated by pivoting this flap 13c through which the fan 7 is switched off or a throttle in the line 6 is closed. So that the negative pressure in the container 2a is lifted, and the weight of the conveyed goods in space 5a pushes the

Flaps 14 down, so that the material on the feed alley in the

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Stall can fall down.

In the case described in relation to FIG. 2, in addition to the container 2a a container 2b can be connected in parallel, e.g. for a second feed passage, and then the connection of the conveyor pipe string 1 through a switch 17 to the lower space 5a of the container 2a or to the lower space 5b of the container 2b.

If, for example, the space 5a of the container 2a is filled with conveyed goods, the last hanging flap 13c actuates the switch 16b / which is then in a circuit through which the switch is switched over in order to be able to load the space 5b of the container 2b with material to be conveyed. If the space 5b is filled with good, so a switch 16b for switching the switch 17 is actuated again by the last hanging flap 13c, and under certain circumstances at the same time the fan 7 is switched off or a throttle valve in the line 6 is closed, whereby the negative pressure in the two containers 2a and 2b is canceled and the container vapors 5a and 5b are emptied via the bottom flaps 14 and 14b, which then pivot downwards.

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Claims (7)

l; r Müv -Vl. Engelbrecht + Lemmerbrock GmbH + Co, Neuerostr. 6, 4520 mile 2350662 Expectations Λ Pneumatic device for removing and conveying dry stalks or leaves or silage a silo or stock by means of a suction head connected to a suction fan, characterized in that that a container (2) divided by a sieve (3) is connected into the suction line (1,6) of the blower (7), its space (4) above the sieve (3) through a pipe connection (6) to the blower under reversible negative pressure can be set and its space (5) under the sieve (3) is charged with the conveyed material by the negative pressure and one Has a bottom of at least one downwardly pivotable flap (8, 9) which is supported by a counterweight (11) is held in the closed position and opens when the negative pressure is lifted and the material weight is fed in. 2. Apparatus according to claim 1, characterized in that in the leading from the upper container space (4) to the blower (7) Suction line (6) a manually or motor-operated blocking throttle (12) is provided. 3. Apparatus according to claim 1 or 2, characterized in that the divided container (2) has a circular cross-section 13ÖO2S / OA73 ORIGINAL INSPECTED and below the sieve (3) is composed of ring segments that can be connected one above the other, the lowermost being Ring carries the hinge or hinges (1o) of the bottom flaps (8,9), the total area of which is larger than the base area of the container and that for the flaps (8,9) the lower edge of the container forms a stop in the closed position of the flaps. 4. Apparatus according to claim 1, characterized in that the container (2a) has a horizontal, elongated, e.g. Has a feed alley of a cowshed extending shape and divided in the longitudinal direction by a horizontal sieve (3a) is, the space (4a) connected to the suction side of the fan (7) above the sieve (3a) by hanging, in Direction d, it divides the blower deflectable flaps (13) is and the space below the sieve (3) according to the distances between the hanging flaps (13) closable bottom flaps (14), which changes by releasing the negative pressure open in the container (2a). 5. Apparatus according to claim 4, characterized in that that in space (4a) above the sieve (3a) hanging flap (13c), which is furthest away from the fan, with a Switch (16) works together, which switches off the drive of the fan or closes a throttle in the suction pipe (6) between the fan (7) and container (2a). 130021/0473 2 ^ 50662 6. Apparatus according to claim 4 and 5, characterized in that the container is divided into two elongated, parallel-connected Container (2a, 2b), for example for two feed alleys in a cowshed, is divided, the above their Dividing sieves (3a, 3b) lying spaces (4a, 4b) with are connected at one end to the suction side of the fan and their spaces (5a, 5b) below the sieves on the the other end can optionally be loaded with conveyed goods through a switch (17). 7. Apparatus according to claim 4 and 6, characterized in that the switch (17) for switching with two switches (16,16b) cooperates in the upper rooms (4a, 4b) the two containers (2a, 2b) with the hanging flaps (13c) i work together furthest away from the fan, 130026/0473