Pneumatic sowing machine distributor head

The invention relates to a distribution head for a pneumatic sowing machine according to the preamble of claim 1.

Such a header is known for example from EP 87114374. This header includes a lid member and a base plate, between which the branches are clamped and abut the side surfaces of adjacent feeders sealed together. Since the side surfaces of the branches are designed to be flexible, it is possible to arrange a different number of branches between the lid element and the bottom element, so that the attached to the drill coulters feeders can be attached to the manifold head depending accordingly. Individual branches are assigned to shut off individual feeders can occluders.

The prospectus Accord with imprint D75 40 10-02 91 a distributor head is known, in which the cover elements are used to shut-off, so that more or less disposed to the manifold branch lines can be enabled or covered. Furthermore, it is through this brochure is known to use different headers with different number of taps.

The invention is based is to provide a simple way for a header, a simple design and robust closing the task.

This object is achieved by the characterizing features of claim 1.

These slides can then be pushed by means of the control panels in the plenum above the vessel to be closed branches, so that the branch absprerren in the desired manner. This has proven to be advantageous in that the slides are formed on its upper side roof-shaped with sides sloping down surfaces. This ensures that the impacting on the vane material particles are deflected laterally and be distributed over a number of branches, so as to prevent that the entire material to be supplied to the closed branch to be the lying, the side next to the branch branching is distributed, but will be distributed through the lateral motion components to a larger number of branches.

It is further provided in an embodiment that the slides in addition partially cover the adjacent branches lying directly next to the covered branch. This ensures that the ansich the covered branch quantity of material supplied not supplied in large quantities to immediately end song next to the covered branch neighboring branch, but is supplied to other feeders. This may be about 10-50% the surface coverage of the neighboring branches.

Furthermore, it is provided that the sliders are sealed in the region of the distributor head outside the distribution chamber with a foam material, for example a polyurethane foam with respect to the distribution chamber. As a result of this measure to seal the internal manifold wall is accomplished over the sliders in an extremely simple manner. Due to the properties of the polyurethane foam, the sliding slots for the slider form of itself.

The leadership of the slide of the locking device can be improved in that the slides are arranged in the tunnel-like guide elements. These actions always a reliable guidance of the slide is also under the most difficult conditions, particularly when contamination between the slide and the base plate should reach, achieved. The slide can cover covered outlets of the header so in every case safe. Thus, the slider, the tunnel-like guide elements can not be lifted, it is provided that the guide elements are fastened by means of fasteners at the lower part.

In order to achieve a sufficient seal, it is provided that the guide elements protrude zoom up to the wall of the inner cap element.

It can be a simple way of tramlining and / or a section control implement, in which a portion of the leads will be switched off.

It may be provided in a preferred embodiment, the closing means is formed as a section control, with which every second branch is closable, wherein via the metering, the metered amount can be reduced simultaneously.

In another embodiment, it is provided that at the same time a tramlining and a section control is provided on a header, a control disc is present in each case for the tramline control and the distribution valves, which can be actuated independently of one another by means of a remote control device.

By means of the control discs can be actuated fastener elements which close the branches.

Further details of the invention are disclosed in the remaining dependent claims, the sample description and drawings. This Show<dl id="dl0001"><dt>Fig.1</dt><dd>a header with tubing for pneumatic seeding in basic representation,</dd><dt>Fig.2</dt><dd>the distributor head according to Figure 1 on an enlarged scale,</dd><dt>Fig.3</dt><dd>the distributor head 2, but with the closure elements of the closing device are in closing position itself,</dd><dt>Fig.4</dt><dd>the header to Fig.2 in view IV-IV,</dd><dt>Fig.5</dt><dd>the distributor head according to Figure 3 in the same view as Figure 4,</dd><dt>Fig.6</dt><dd>a slide in side view,</dd><dt>Figure 7</dt><dd>the slider in the view VII-VII,</dd><dt>Figure 8</dt><dd>the slide in plan view, </dd><dt>Fig.9</dt><dd>another arrangement of a closing device in the representation according to Figure 4,</dd><dt>Fig.10</dt><dd>the distributor head according to Figure 6, as illustrated by Figure 5,</dd><dt>Fig.11</dt><dd>the header to Figure 5, but with differently shaped sliders,</dd><dt>Fig.12</dt><dd>the header with tubing for pneumatic seeding in section and in schematic representation,</dd><dt>Fig.13</dt><dd>the lower part in plan view in the view II-II,</dd><dt>Figure 14</dt><dd>the tunnel-like guide member in the plan view and in a different scale,</dd><dt>Fig.15</dt><dd>the tunnel-like guide member in the front view and</dd><dt>Fig.16</dt><dd>the tunnel-like guide element in side view.</dd></dl>

The distributor head 1 is intended for a pneumatic sowing machine. The distributor head 1 is equipped with an outer lid member 2, inner top member 3 and a lower part 4th The lower part 4 has a connecting member 5 for mounting on the trained partly as a corrugated tube riser 6th an arc-shaped tube may be disposed in front of the riser pipe 6, which is connected to a not shown metering device and to a blower, not shown. About the metering device the riser 6 and the header 1 in conjunction with the air stream in a known and therefore not shown manner seed or fertilizer is supplied from a reservoir.

The lid member 2 is formed in the upper region as an impact surface 7th The lower part 4 of the distributor head 1 consists of a metal plate designed as a plate 8 with openings 9, which are followed by the Abzeige 10th The feeders 10 are welded to the Belchplatte eighth However, they can be clipped into the apertures 9 or clipped onto this. The openings 9 for the feeders 10 are introduced into the plate 8 in a preferred manner on a CNC or other machine tool. The diameters of the openings 9 are adapted to the number of branches 10th The metal plate 8 is fixed to the flange 5, which or whose extension is attached to the riser. 6

The cover member 2 has a downwardly open, semi-spherical shape which is flattened in the impact area. 7 The cover element 2 is arched and rotationally symmetrical concave and shaped as a flattened hemisphere. Inside the lid element 2, another inner lid member 3 is arranged.

The feeders 10 are directed downwards, they may be arranged differently either straight down or at an angle ranging between 0-60 degrees from the normal downward.

Depending on the number of connectable and coulters according to the working width of the drill and the coulter spacing, the corresponding lower part 4 is fitted with the required number of taps 10 to the manifold. 1

For this purpose, a number of different sub-portions 4 are each provided with a different number of taps for the distributor head 1, so that the distributor head by the corresponding lower part 4 with the required number of taps 10 is equipped in a simple and cost-effective manner.

The various sub-parts (with different number of openings and feeders) are prepared in the manner described above and then assigned to the production of the headers with the branches respectively desired the manifold head. Thus can be inexpensively and rational manner different headers produce.

The distributor head 1 is assigned for closing a certain number of feeders 10 is an integrated closing device eleventh This closing device 11 is configured as tramline switching and has a corresponding to the desired number of the disconnected sowing coulters corresponding number of fastener elements which are formed as a slide 12, on. These slides 12 are arranged in the base plate 8 radially extending guides 13 by means of the valves 12 and out designed as pins 14 and 15 guide elements. The one pin 14 is longer and engages in addition to the cam guide 16, which are located in the control disc 17th The control disk 17 is rotatably mounted on the flange 5 of the distributor head 1 below the base plate eighth By means of the trained as a hydraulic cylinder actuator 18 can be 17 rotate in the direction of arrow 19, the disk, so that the slider 12 to slide from the position shown in Figure 4 to the position shown in Figure 5. By means of a hydraulic cylinder 18 associated with the return spring 18 'can 18, the disc 17 can be pulled back in direction of arrow 20 so that the slider 12 can be pushed back into the position shown in Figure 4 after the unpressurized of the hydraulic cylinder. The slider 12 may have on its outer side adapted to the inner curvature of the cover element 2 Rounding. The slides 12 are roof-shaped at its inflow side, with side sloping surfaces 21. In the installed position shown embodiment, the slider 12 are formed on the upper side of a roof shape, the surfaces 21 slope downwards. On the inner side, the slide 12 on its surface a sloping inner surface 22 on. Above the slide 12 and in the interior of the inner cap member 13 is in the region of the distributor head 1 outside the distribution chamber 23, the foam pad 24, which consists of a polyurethane foam, disposed that the slide 12 seals against the distributor chamber 23rd The Verschieberraum 24 below the polyurethane foam 24 is formed by the slide 12 itself.

In a manner not shown it is also possible to further slide 12 to be disposed in the distributor head 1 with an additional, but not shown, control disc so that each second branch 10 is closed, in which case, however, via the metering device the metered quantity of seed at the same time to reduce. This is a section control is achieved. The two control discs are independently actuated by Ferndbedienungseinrichtungen.

In the embodiment in accordance with the 9 and 10 three coulters are closed each lane. For this purpose, it is required in addition to the implementation of additional slide 12 slide 12 and another control disk to mount to the manifold. 1

The 11 shows in comparison to the Fig.5 wider trained slide 12 'which partially adjacent to the fully enclosed junction 10 and the immediately adjacent feeders 10' cover 'part. These slides 12 'each have on the inflow side a roof-like shape so that the inflated material particles get lateral movement component. Due to the partial coverage of the immediate neighbors feeders 10 '' of the completely covered feeder 10 'is prevented an unwanted accumulation of more material in order to large. It evened out the distribution of the per se the enclosed branch 10 'supplied seeds to several branches 10' and 10 in addition to the closed-off junction 10 'is achieved in a simple and unexpectedly, thus so.

The header 101 of Figure 12 is provided for a pneumatic seeding. The distributor head 101 is provided with an outer cover member 102, the inner cover member 103 and a lower part 104th The lower part 4 has a connecting member 105 for mounting on the trained partly as a corrugated tube riser 106th Before the riser 106 may be an arc-shaped tube may be disposed which is connected to a not shown metering device and to a blower, not shown. About a metering the riser 106 and the header 101 in conjunction with the air stream in a known and therefore not shown manner seed or fertilizer is supplied from a reservoir.

The lid member 102 is formed in the upper region as an impact surface 107th The lower part 104 of the header 101 consists of a metal plate designed as a plate 108 with apertures 109, to which the branches join 110th The feeders 110 are welded to the sheet metal plate 108th However, they can be clipped into the apertures 109 or clipped onto this. The openings 109 of the branches 110 are inserted into the plate 108 in a preferred manner on a CNC or other machine tool. The diameter of the apertures 109 are adapted to the number of branches 110th The metal plate 108 is secured to the flange 105, which is attached to the riser 106 or its extension, attached.

The cover member 102 has a downwardly open, semi-spherical shape which is flattened in the impact area 107th The lid member 102 is arched and rotationally symmetrical concave and shaped as a flattened hemisphere. Inside the lid element 102, another inner lid member 103 is arranged.

The feeders 110 are directed downwards, they may be arranged differently either straight down or at an angle ranging between 0-60 degrees from the normal downward.

Depending on the number of connectable and coulters according to the working width of the drill and the coulter spacing, the corresponding lower part 104 is fitted with the required number of taps 110 to the manifold one hundred and first

To this end, a number of different bases 4 are each provided with a different number of taps for the manifold head 101 so that the header is to be equipped in a simple and cost-effective manner by the corresponding lower part 104 with the required number of taps 110th

The various sub-parts (with different number of openings and feeders) are prepared in the manner described above and then assigned to the production of the headers with the branches respectively desired the manifold head. Thus can be inexpensively and rational manner different headers produce.

The distributor head 101 is assigned 111 for closing a certain number of feeders 110 an integrated closing device. This closing device 111 is configured as a tramline switching and has a corresponding to the desired number of the disconnected sowing coulters corresponding number of fastener elements which are constructed as a slide 112 on. This slider 112 are arranged in the bottom plate 108 radially extending guides 113 by means of the sliders 112 and out designed as bolts 114 and 115 guide elements. One stud 114 is longer and engages in addition to a curved guide, as described in the main patent, which are located in the control disk 117th The control disk 117 is rotatably supported on the flange 105 of the distributor head 101 below the base plate 108th By means of the trained as a hydraulic cylinder actuator 118 can be rotate 117 the disc so that the slides are moving in direction of arrow 112 120th By means of the hydraulic cylinder 118 associated return spring 118 'is 118, the disc 117 are withdrawn after the unpressurized the hydraulic cylinder so that the slider 112 is retracted to the position shown. The slide 112 may have on their outside a shape adapted to the inner curvature of the lid member 102 rounding.

The slider 112 are arranged in the tunnel-like guide elements 121st The tunnel-like guide members 121, the bolts 122 and 123 which engage in the holes of the plate 124 and arranged 125th Arranged on the outer side of pins 122 have at their free end a widening 126 which is formed as a head on. The openings 124 'in plate 108 have on the outer sides also larger cut-outs 127, which are adapted to the outer diameter of the widening 126 of the bolt 122nd The heads 126 are then, after they have been threaded through the openings 127, pushed by the guide elements 121 rearward. Thus, through these bolts 122 with the heads of the guide members 121 attached to the lower part 108th These bolts 122 with the heads 126 form the fasteners. The guide elements 121 protrude right up to the wall of the inner cover member 103, such as Figure 12 shows. Between the inner cover member 103 and the base 104, the foam plate 128 is arranged outside the distribution chamber 127, the seals 121, the slider 112, the guide elements against the distributor space 127th Furthermore, the front pin 114 which is fixed to the slider 112, also a widening 126 on.