Classifications

• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01C—PLANTING; SOWING; FERTILISING
  • A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
  • A01C23/02—Special arrangements for delivering the liquid directly into the soil

Definitions

• a Spreader equipment for liquid manure e.g. a semi-liquid slurry
• the present invention relates to a spreader equipment for liquid manure, e.g. a semi-liquid slurry, comprising at least one injection nozzle which is, via a pipe, connected with a supply valve for periodical supply of a semi-liquid slurry under pressure from a container of semi-liquid slurry for direct injection of semi-liquid slurry into the soil, which spreader equipment is preferably provided on a vehicle for movement on the surface of the ground, as stated in the introductory part of the following independent claim.
• liquid manure e.g. a semi-liquid slurry under pressure
• injection nozzle forming concentrated directed jet By introducing liquid manure, e.g. a semi-liquid slurry under pressure by the aid of an injection nozzle forming concentrated directed jet, the soil may partly be broken u and plant growth may be disturbed.
• gentle and efficient introduction of liquid manure, especially a semi-liquid slurry, into the soil is achieved, with considerably reduced liberation of nitrogen to the atmosphere and liberation of odorous matter, and with the liquid manure being to a high degree advanced directly to the root system of plants, and with considerably reduced runoff from a sloping ground.
• Figure 1 is an elevational view of the spreader equipment which is mounted on a vehicle;
• Figure 2 shows the spreader equipment in a rear view;
• Figure 3 is a sectional view of the injection nozzle of the spreader equipment, and a supply valve for liquid manure with a stator and a cyindrical rotor chamber.
• Figure 1 shows spreader equipment for liquid manure, e. g. a semi-liquid slurry, comprising at least one injection nozzle 1 which is connected with a supply valve 6 for periodical supply of semi-liquid slurry under pressure from a tank 4 for semi-liquid slurry, for direct injection of semi- liquid slurry into the soil.
• the spreader equipment is preferably mounted on a vehicle H for movement on the surface of the ground E.
• Injection nozzle 1 is provided at end 3a of an arm 3, whic is mounted to be slewable about a horizontal axis on carrier means 11, which is secured to vehicle E.
• Arm 3 i connected with a pressure cylinder 10, which is to exert desired constant flexible pressure against the arm to urg injection nozzle 1 into resilient contact with surface of th ground E.
• Injection nozzle 1 is slewably mounted on arm 3 by the aid o a spherical bearing lg so as to be able to adapt to rough nesses of the surface of the ground E.
• Injection nozzle 1 is, thus, arranged to be in resilien contact with ground surface E with a lower portion, and i comprises a valve housing la with an inlet la' and a outwards diverging and downwards facing outlet passage 11.
• valve member lc which is displaceable axially outward against a spring means If, is provided in outlet passage l and is spring loaded inwards into sealing cooperation wit defining surface 11' of outlet passage li. Displacement o valve member lc will cause a passage C to be formed with a annular nozzle opening Cl between valve member, lc an defining surface 11'.
• Valve member lc will, thus, be urge down by pressure exerted by the semi-liquid manure, fo periodical opening of nozzle opening C and, consequently injection of the semi-liquid slurry into the soil.
• Inlet la of valve member la is connected with outlet 6e of suppl valve 6, via a pipe 2, and its inlet 6d is furthermor connected with a pressure pump P and tank 4 for semi-liqui manure by the aid of a pipe 5.
• a sliding surface 12 with upwards curved lateral edges i achieved, causing the injection nozzle 1 to slide readily. on the soil in all directions, which is important when driving in a curve, in which case there is a combination of forward motion and transversal motion of the injection nozzle 1 on the ground.
• valve member lc Due to the fact that valve member lc is in sealing engagement with defining surface 11' of the outlet passage li in between periodical ejections of the semi-liquid slurry, the valve member will prevent particles from penetrating into the annular nozzle opening C which is then closed.
• both outlet passage li and valve member lc are cone shaped with different cone angles , ⁇ , so that the width of annular passage C is reduced in the direction of nozzle opening C.
• the periodical pressure of semi-liquid slurry on the cone shaped plate of valve member lc will, thus, urge the valve member down against the above mentioned spring force to open nozzle opening C.
• valve member lc has a valve spindle lb extending upwards in valve casing la through lower and upper guiding and supporting bearings Id, le, which are arranged in said casing in the shape of bearing sleeves.
• Valve spindle lb, the top portion of which projects outside valve casing la, is provided with an adjustable stop If for cooperation with a compression spring If", which is supported by the outside of valve casing la.
• Supply valve 6 comprises a stator 6a with a cylindrical rotor chamber 6a' comprising an inlet 6d from tank 4 for semi- liquid slurry, via pressure pump P, and an outlet 6e, which is connected with injection nozzle 1 by a pipe 2.
• An adjustably driven supply rotor 6b is provided in said cylindrical rotor chamber 6a' and comprises a supply chamber 6c, which connects inlet 6d and outlet 6e in a certain angular region of rotation of rotor 6b relative to stator 6a so that semi-liquid slurry under pressure may pass to and through hose 2 to injection nozzle 1.
• Inlet 6d and outlet 6e are provided in the end wall of rotor chamber 6a', and in its cylindrical mantle wall, respective ⁇ ly, within the same angular sector of rotor chamber 6a', and with their centres preferably in the same radial plane to the axis of rotation of rotor 6a'.
• a pre-filler pipe connection 6f which is connected with the pressure side of pressure pump P, via a hose 8, and a return/ventilation pipe connection 6g, which is connected with tank 4 for semi-liquid slurry, via a pipe 7, are provided in the end wall, and mantle wall, respectively, of rotor chamber 6a' within the same angular sector in rotor chamber 6a' in front of the angular sector of inlet and outlet 6d, 6e, as seen in the direction of rotation A of rotor 6b.
• Return/ventilation pipe connection 6g is provided in the end wall of rotor chamber 6a' and in front o the pre-filler pipe connection 6f in the mantle wall.
• a drainage pipe connection 6h is arranged t provide for outlet of liquid that might be squeezed i between rotor 6b and the wall of rotor chamber 6a' , and i desired, to provide for outlet of residual semi-liquid slurr under pressure which might be present in supply chamber 6 when the latter is made to pass drainage pipe connection 6 during rotation of rotor 6b.
• rotor 6b comprises two supply chambers 6c which are mutually opposed in a radial direction. Consequently, supply of semi-liquid slurry to injection nozzle 1 occurs twice in the course of one revolution of rotor 6b.
• arm 3 is rotatably mounted on the outside of stator 6a which is cylindrical and forms the bearing shaft. In this manner a compact design of the spreader equipment is achieved, with the latter being secured to vehicle H by its carrier arm 11.
• Supply valve 6 may be extended in its axial direction thus to constitute a common supply valve for several injection nozzles 1, which are provided on arms 3 comprising a pressure cylinder 10 each. Arms 3 are in this case mounted side by side and at a mutual distance on stator 6a to be independent ⁇ ly rotatable.
• the spreader equipment according to the invention is especially intended for direct injection of semi-liquid slurry into the soil with the least possible damage to the surface, and it is especially useful for spreading and introducing semi-liquid slurry on grassland without damaging the turf.
• the volume of semi-liquid manure supplied during an injection period may be varied within wide limits.
• the driving pressure of pump P may, e.g. be between 2 and 20 bar absolute.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Soil Sciences (AREA)
• Engineering & Computer Science (AREA)
• Water Supply & Treatment (AREA)
• Environmental Sciences (AREA)
• Fertilizing (AREA)
• Fertilizers (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=19892995

Family Applications (1)

Country Status (4)

Families Citing this family (1)

Citations (5)

• 1990
  • 1990-03-15 NO NO901219A patent/NO169811C/no unknown
• 1991
  • 1991-03-15 EP EP91906003A patent/EP0519979A1/en not_active Ceased
  • 1991-03-15 WO PCT/NO1991/000044 patent/WO1991013538A1/en not_active Application Discontinuation
  • 1991-03-15 AU AU74958/91A patent/AU7495891A/en not_active Abandoned

Patent Citations (5)

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