DE3038169A1 - Granulate spreading machine with metering mechanism - has chambers in rotary member connected alternately to hopper and outlet - Google Patents

Abstract

The granulate-spreading machine is particularly for hop cultivation, and has a storage hopper and a metering mechanism. It has a rotary member containing metering chambers at intervals, these being alternately connected to the hopper and to a discharge opening. The member is driven by a motor, and can be in the form of a drum with bores through it, at intervals in the peripheral direction. On one side the drum is opposite the filler opening of the hopper, and on the other the mouth of the discharge pipe.

Description

Granulate spreader

The invention relates to a granulate spreader, in particular for the pot cultivation, with a storage container and a metering device for the discharge of the granules.

There are already known granulate spreaders of this type, with a A manually operated lever is provided, by means of which the metering device is operated. This manual operation is tiring, especially after a certain amount of time Number of operations the device is crushed on the metering device Granulate becomes stiff.

The invention is based on the object of a Granuiatstreugerät to train specified type so that it can be operated fatigue-free and works reliably.

According to the invention, this object is achieved by the features in the identifier of claim 1 solved. The motor drive ensures fatigue-free operation of the device, combined with a reliable, continuous transmission. Through the distance between the metering chambers is the motor-driven one with continuous rotation Dosing device achieves a discontinuous granulate discharge, so that with a suitable Design of the speed relative to the distance between the dosing chambers, for example at each step of the person carrying the tanning, a dosing chamber filling is discharged will. An operator can thus control the hop plants planted at a step spacing or go along other row crops, -weDel the appropriate perennial Amount of granulate is automatically discharged.

The metering element can be a paddle wheel or another one with filling chambers be provided circumferential element. The configuration is advantageously according to Claim 2 provided because through the through holes of the drum with simple Structure of the device an accurate dosage is achieved.

For reliable operation and precise dosing, it is advisable to to enclose the drum according to claim 3 by a housing in this construction the filling and discharge area is sealed against external influences, and a loss or uncontrolled discharge of the granulate is avoided.

So that no strong shear forces attack the granulate, which could lead to a Premature clogging of the device by crushed a-granulate will lead to the construction according to claim 4 provided, wherein the distance between the drum surface and the overlying Housing wall with filling opening a trouble-free over a long period of operation Operation of the device gewEhrleis et.

To check the filling level of the device during operation take a checker to be able to, the embodiment according to claim 5 is advantageous.

The embodiment according to claim 6 can be provided to a to support exact dosing that the filling opening n of the dosing device is separated from the dosing chambers located in the astral region.

To carry the device, it is advisable to move the storage container Claim 7 to form a rod.

The I.usgestaltung according to claim 8 ensures a l; rice surface n-shaped distribution of the granulate on the ground.

An example embodiment according to the invention is shown below explained in more detail with reference to the drawing. 1 shows a perspective view of the granulate spreader, FIG. 2 is a plan view of the metering device and FIG. 3 shows a partial section through this.

In Fig. 1, 1 denotes a tubular or rod-shaped storage container, on which a strap 2 can be attached in the manner shown, the over the shoulder is placed so that the storage container 1 obliquely forwards and downwards is directed. At the lower end of the storage container 1 is a cylindrical housing 3 attached, on the underside of a .stragsrohr 4 and a drive motor 5 attached are. The drive motor 5 can be a conventional long-running electric motor, as it is used, for example, for grills.

At 6 a battery housing (1.5 V stick battery) is shown.

FIGS. 2 and 3 schematically show details of the metering device. In the cylindrical housing 3, a drum 7 is rotatably disposed over a transmission, not shown, is connected to the drive motor 5 and from this 1iontinierlich is driven. The drum 7 has through holes 8 provided, which are parallel to the drum axis at regular intervals around the circumference are arranged distributed. The underside and the outer surface of the drum 7 lies gene close to the associated walls of the housing 3, while the upper Wall surface 9 of the housing stepped a distance from the top of the drum 7, such as Fig. 3 shows. A filling opening 10 is formed in the upper housing wall 9, to which the VorratsDehG.lter 1 is connected. In the lower case wall is a discharge opening 11 is formed, to which the discharge pipe 4 is connected is. As FIG. 2 shows, the filling opening 10 is at a different point on the circumference of the drum 7 as the discharge opening 11. Fig. 1 shows the operating position of the granulate spreader, the housing 3 with the drum 7 being slightly inclined. Starting from this operating position, the discharge opening 11 is highest at the lying SteLle of the drum, while the filling opening 10 in the through an arrow indicated direction of rotation of the drum behind the discharge opening laterally is arranged below, as shown in FIG.

When operating the device, the one at the top with a Closure cap provided storage container 1 filled with granules, with the The space between the upper housing wall and the drum 7 is partially filled. This The distance between the upper housing wall 9 and the drum surface is relatively small, for example on the order of about 2 mm with a diameter of 1 mm the granules. The space on top of the drum 7 is therefore initially not completely filled, only when the drum starts rotating in the direction of the arrow in Fig. 2 the granules are mitgenein ..- men, so that essentially the lower half the drum surface is covered with granules. The metering chambers 8 fill up due to the effect of gravity with -granulate, with the in the lower area on Granules resting on the drum ensure that the dosing chambers are completely filled. When the drum rotates, the dosing chambers are wet together with the discharge opening 11 aligned so that the chamber filling also due to the effect of gravity is discharged through the discharge pipe 4.

At a given distance between the metering chambers 8 in the direction of rotation, the Speed of the drum, 'designed so that, for example, one aer metering chamber every second 8 with the discharge opening 11 aligns. This second interval corresponds to the normal walking pace of an adult. This can be used after switching on the drive motor 5 discharges the required amount of granulate every second, while the operator walks along the hops.

The upper housing wall 9 is made of transparent material, for example Art glass, so that during operation the function of the Device can be constantly monitored.

In order to obtain an even dosage even when the device not in the intended inclination, but rather 'held almost vertically' can be a flexible wiper lip between the upper housing wall 9 and the drum surface 12 can be provided as indicated in FIG. This wiper lip separates the filling area from the discharge area, so that in the discharge area only up to The metering chambers 8 filled to the edge arrive, which are automatically activated via the discharge opening 11 be emptied. The flexibility of this wiper lip 12 is excessive Avoid shear effects on the granulate.

So that the granulate is distributed evenly on the floor the size of a plate can be, is in front of the mouth opening of the discharge pipe 4 by means of a bracket a conical manifold 13 is arranged (Fig. 1). This distributor can be detachable bz.

be attached interchangeably for other types of granulate.

In the illustrated embodiment, the electric motor 5, which only rewbt the drum 7, arranged on the underside of the housing 3. It is also possible to have the drive motor above it or, for example, also on the upper one To be arranged at the end of the storage container 1, then the drum 7 via a corresponding long shaft is driven. Likewise rist a lateral arrangement of the motor on the housing 3, the drive connection with the drum 7 can be done via a belt drive with replaceable pulleys, so that the Rotational speed of the drum 7 can be adapted to the respective requirements can.

According to another embodiment, it is also possible for the metering element to be carried out in a different way, for example as a chain-shaped, revolving element m't dosing bags, - which are discharged at certain time intervals.

It is also possible to use the metering device according to the invention. a tractor -provide that drives along row crops, in the of the plants a dosed amount of granules from the spreader at predetermined intervals is delivered.

Another embodiment of the housing (3) is also possible. Thus, the bottom ware provided with the discharge opening (11) can only be via webs be connected to the upper housing wall (9), which, however, via an annular shoulder, as indicated at 14 in Fig. 3, on the upper surface of the drum (7) for Sealing of the space formed above the drum rest.

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Claims (10)

PATENT ADJUSTMENTS. 1. Granulate spreader, especially for hop growing, with a Storage container and a metering device, characterized in that a rotatable or circumferential metering element (7) with metering chambers arranged at a distance from one another (8) is provided, which alternates with the storage container (1) and a discharge opening (11) connect and that the metering element (7) is driven by a motor (5j is. ?. Granulate spreader according to claim 1, characterized in that the dosing element is designed as a drum (7) which is distributed over the circumference, has through bores (s), one side of the drum having a feed or the filling opening (10) of the storage container iind the waste opening on the other side (11) of a discharge pipe (4) is opposite. 3. Granulate spreader according to claims 1 and 2, characterized in that da9 the drum (7) driven by the motor in a housing surrounding the drum (3) is arranged. 4. Granulate spreader according to claim 3, characterized in that the upper housing wall (9) is at a distance from the upper drum surface. 5. Granulate spreader according to claims 3 and 4, characterized in that that the upper housing wall (9) consists of transparent material. 6. Granulate spreader according to the preceding claims, characterized characterized in that between the upper housing wall (9) and the drum surface A flexible wiper lip (12) extends over at least one section. 7. Granulate spreader according to the preceding claims, characterized characterized in that the storage container. (1) is tubular. 8. Granulate spreader according to the preceding claims: a, characterized characterized in that at a distance from the free end of the discharge tube (4) a conical manifold (13) is arranged. 9. Granulate spreader according to the preceding claims, characterized geknnnzeich that the speed of the metering element or the drum (7) in relation to the distances between the metering chambers (8) is designed so that at intervals of about 1 second each a dosing chamber (8) with the discharge opening (11) in connection occurs. 10. Granulate spreader according to the preceding claims, d through characterized in that the drive motor is a> battery-powered electric motor, which is arranged on the outside of the housing (3).