DD266950A1 - DOSING DEVICE FOR GUELL DISTRIBUTORS - Google Patents

Abstract

Depending on the nature of the soil and the composition of the bark, the required discharge rate varies. Since it is expedient to drive with the tractor equally fast on the field, a reduction of the flow cross-section is required. According to the invention, the adjustable diaphragm installed behind the gate valve has two slide plates with a triangular recess, which are moved and locked against each other by a Bowden cable or other actuation devices. The cross-section can thus be changed in a certain range up to the opening, without the center of the beam shifts. As a result, the spray pattern produced by the distribution plate is retained. Chamfers on the slide plates ensure self-cleaning. Fig. 2

Description

For this 4 pages drawings

Field of application of the invention The invention relates to a metering device for liquid manure spreaders on liquid manure vehicles. Characteristic of the known technical solutions

Depending on the state of fertilization of the soil and the type of culture as well as the liquid manure composition different application rates of manure are required. Since it is more advantageous to keep the driving speed of the Güllofahrzeuges on the field near constant, it makes it necessary to make the outflow from dom slurry tank variable. For this purpose, it is customary that the Güllebreitvorteiler upstream of a diaphragm, which reduces the A jstrlttsquerschnitt to the required level. Since Fdstblenden require additional assembly costs uod at a fine grading of the aperture diameter a variety of oil ends are required and a frequent change is required, often the change is not made. It is also known an aperture ring with different aperture diameters. The disadvantage is dl * large dimension.

Known irises are not suitable for liquid manure, as these suspended and sediment, such as straw, sand and twine, contains, which calls the function of such a sensitive aperture in question.

In DE-OS 2842906 a flow control valve is described which is provided for feeding separators, but also for manure could be used. This valve consists of two plates that can be swiveled against each other, which can be filled by a hydraulic cylinder, which allow a variable outlet cross section and optionally shut off the outlet tightly. The, mix two fixed plates to which the hydraulic cylinder is articulated, arranged two movable, interconnected, pivotable about a point plates slide with little clearance between the fixed plates. Dabol result in flow of pure liquids no difficulties. With liquid manure however sand and other admixtures would soon put between the plates and make the movement impossible. If a good deal of play were left between the plates, manure would escape during the performance and during the journey, as the plates would not slide in any enclosed building.

A weitorer disadvantage of this invention is that in the change in size, the outlet cross section you his Ho τι changed. Since the jet with different profile hits the manure compactor, the spray pattern also changes, resulting in a different density of the split slurry jet, resulting in a deterioration of the quality of work and an insufficient fertilizer effect.

ZIoI the invention

Dio invention has the goal to allow with little effort and low susceptibility to a continuous change in the outlet cross-section between the gate valve and the outlet nozzle.

Presentation of the essence of F.rfIndunrj

The technical object of the invention is to make two mutually movable plutts in the guide and in their recess zu.- adjustment of Durchflußqusrschnittes so that they are easily movable, impurities are automatically ejected and the cross-sectional shape of the aperture and the center in each öffnungsla To be preserved.

Erfindungsgamäß the technical problem is solved in that the metering device consists of a housing, in which two mutually displaceable slide plates are arranged with Dreleckförmigen Ausuparungen hlntereinanderliegend between two sliding plates and guided laterally. The Durchtrittsmiuerschnltt resulting from the two triangular cutouts Is square in each opening. To operate the slide plates serve two spring-loaded Bowden cables, the ropes are attached to a T-shaped lever or a Ssiischelbe, said the

Operating lever has a locking device and a circular scale. Instead of the Bowden cables and an annular disc with two curved guide grooves, in which the slide plates are slidably moved, are used.

The effective range is the following: The arranged on the Bowden cables compression springs are anxious, the two slide plates in opposite directions to the inside

move; the cables of the Bowden cables form the counterforce. To lock the provided with a catch operating lever.

Depending on whether the Bedionhebol is pivoted in one direction or the other, slide the slide plates

together or warden pulled apart. This changes the passage cross section. The position of the slide plates

and thus the opening width dia slider can be read on the scale of the control lever. Will the pulley and the

Bowden cables replaced by a krelsringförmo control disk, simplifies the execution. The takers of the bolden Sliding plates slide in the cam guides and move the slide plates radially. For self-cleaning, the Schleber plates are chamfered on the outlet side. The Austrittsseitlge sliding plate has in the Schleberabschrägung segmental passage opening ^ on. The advantage of the invention is that the bolden Schleber plates with great play against each other, eomlt

Correlated surfaces or flushed fine sand do not exert any significant influence on the easy mobility of the plates. In the movement space behind the front sides of the Schleberplatten settling sand and similar deposits

are forced when opening the blonde forced against the Rohhtlnnenwand and by the bevelled

Schleberplatten after the AustrlttsseSie pushed away. Ourch the existing overpressure, the slide plate ^

sufficiently firmly against each other printed. The housing is tight on the circumference, so that no slurry exits via the slide play.

Since there is an additional shut-off shifter, the doser device is actuated only when the exit amount changes

shall be. The air exiting after emptying the liquid manure tank with 1 MPa overpressure blows out the residues deposited in the panel area.

By maintaining the beam center and the beam cross-section, the spray pattern remains on the manifold plate, creating a

high work quality is ensured.

Ausführungsbelsplel

The invention will be explained in more detail below on an Aueführungsbeispiel. Show it:

1: the Doslerbrende in open Siollung without sliding plate view from the rear, 2: the Doslerbrende with slurry compactors in the coupled state, Fig. 2a: the slide plate In the view FIg, 2b: slide slide plate In view, Flg. 3: the operating mechanism for the diaphragm by means of cable and the arrangement of the scale, Flg. 4: the rear view on the slurry and Fig. 6: another movement mechanism for the slider As can be seen from FIGS. 1 and 2, the metering orifice consists of the housing 1, which is at the same time the supply pipe, one

welded sliding plate 2, the two slide plates 3 and a releasably arranged sliding plate 4, if disassembly should be required. The slide plates 3 are laterally by guide segments 5 and in the flow direction through the

Slide plates 2 and 4 supported and guided. The slide plates 3 have triangular recesses 3 b, in each

The sliding plates 2 and 4 have a free passage cross-section which at least the

Opening width of the slide 3 corresponds to complete opening. This does not necessarily have to be square. to

Movement of the Schleberplatten 3 serve Bowden cables whose rope 6 via Gewlnde.Mifte 7 with the slide plate 3 and its Case 8 via the nipple 9 and the cap 10 is connected to the dlendenden as housing 1 guide tube. The Restoring force forms the compression spring 11. It would also be possible to attach the Schleberplatten on a four-bar linkage, so that

only one tension element would be required. The operation could be done directly by a one- or two-armed lever.

Flg. 3 shows the transmission of motion by Bowden cables. By pressing the hand lever 12, which with a lock in the Scale 13 engages a pulley 14 is moved to which the ropes 6 are attached. The shell 8 rests against the Spannippe! 15. The control device can be arranged at any / favorable location of the rear wall of the liquid manure vehicle. Since inevitable between the sliding surfaces fine sand and mud to the pipe inner wall, would oich the slide

do not open fully. By the projection 3a of the slide 3 and the flattening 4a of the slide plate 4, the foreign substances

To be ejected in fluid (Figs. 2 a, 2 b). 4 shows the installed state rior Doslereinrichtung with baffle plate in the fully open state. Fig. 6 replaces the Bowden cable by a control disk 16. The control disk 16 fixedly connected to the hand lever 12 has

two KurvenfUhrungon 17, In which bolts 15 engage, which are connected to the lugs 3 c of the slide plates 3.

The Doslerblende is connected downstream of the gate valve and therefore has no shut-off position. Instead of the control disk 16 could occur a four-sided box, the Schleberr'.atten 3 at each hinge point to

would be attached. The scale would then be attached to the adjusting spindle.

Claims (3)

1. metering device for liquid manure spreaders on slurry vehicles with between two fixed plates against each other movable plates with opposite recesses -mt formation of the variable Ausflußquerschnittes with a common operating device, characterized in that the slide plates (3) are successively radially slidably guided, on the facing end sides each oinedreieckförmigc Recess (3b) and on the opposite sides on the outlet side have a bevel (3 a) and that the exit-side sliding plate (4) opposite each t>! Ne flattening (4a). 2. Metering device according to claim 1, characterized in that serve as a transmission element Bowden cables (6; 8), a pulley (14) and a hand lever (12). 3. Metering device according to claim 1, characterized in that serve as a transmission element, a control disc (T6) with cam guides (17) and boring bolts (15).