RU217443U1 - Adaptive pneumocentrifugal module of the machine for applying mineral and lime fertilizers - Google Patents

Abstract

The utility model relates to agricultural engineering and can be used on machines for the surface application of mineral and lime fertilizers. The adaptive pneumocentrifugal module includes a conical surface with a larger circle downwards, with rigidly fixed helical screws, and a flat disk on which straight blades are rigidly fixed, the intake hole is located in the lower part of the fan casing. Under the bottom surface of the flat disk there is a bladed fan mounted on a hollow shaft, which is pivotally mounted on a central shaft rigidly fixed to the bottom surface of the flat disk. In addition, the blade fan has a separate drive with the ability to control its speed. At the edge of the casing of the bladed fan, an air damper is pivotally mounted, with the possibility of rotation relative to the casing, the deviation of which is limited by a spring. The utility model makes it possible to increase the uniformity of the distribution of mineral and lime fertilizer granules, increase the working width of the machine and is able to adapt to the changing operating conditions of the unit. 1 ill.

Description

The utility model relates to agricultural engineering and can be used on machines for the surface application of mineral and lime fertilizers.

Known pneumocentrifugal working body containing a conical surface, the larger circle down, on the surface of which is rigidly fixed helical screws. The conical surface with helical screws is rigidly mounted on a flat disk. Straight blades are rigidly fixed on a flat disk. In the lower part of the working body, a bladed fan is introduced, mounted on a hollow shaft, which is pivotally mounted on a central shaft rigidly fixed to the bottom surface of a flat disk. The bladed fan has a separate drive with the ability to control the frequency of its rotation. The blade fan is closed by a casing and takes in air through the intake hole (RU No. 201318, IPC A01C 17/00, publ. 12/09/2020).

The disadvantage of this working body is that it is not able to change the direction of the air flow.

The technical result consists in increasing the uniformity and increasing the working width of the adaptive pneumocentrifugal module of the machine for applying mineral and lime fertilizers by adapting the operating modes of the module depending on the granulometric composition of the applied material.

The technical result is achieved by the fact that the adaptive pneumocentrifugal module of the machine for applying mineral and lime fertilizers includes a conical surface located with a larger circle downwards, with rigidly fixed helical screws and a flat disk on which straight blades are rigidly fixed, the intake hole is located in the lower part of the casing fan. Under the bottom surface of the flat disc there is a bladed fan mounted on a hollow shaft, which is pivotally mounted on a central shaft rigidly fixed to the bottom surface of the flat disc. In addition, the blade fan has a separate drive with the ability to control its speed. A distinctive feature of the adaptive pneumocentrifugal module is that on the edge of the casing of the bladed fan, an air damper is pivotally mounted, with the possibility of rotation relative to the casing, the deviation of which is limited by a spring.

The drawing shows a side view of the adaptive centrifugal module of a machine for applying mineral and lime fertilizers.

The adaptive pneumocentrifugal module of the machine for applying mineral and lime fertilizers contains a conical surface 1, located with a larger circle downwards, on the surface of which helical screws 2 are rigidly fixed. The conical surface 1 with helical screws 2 is rigidly mounted on a flat disk 3. Straight blades 4. In the lower part of the working body, a blade fan 5 is inserted, mounted on a hollow shaft 6, which is pivotally mounted on a central shaft 7, rigidly fixed to the bottom surface of a flat disk 3. The blade fan 5 has a separate drive 8 with the ability to control its speed. The blade fan 5 is closed by a casing 9 and takes air through the intake hole 10. At the edge of the casing 9 of the blade fan 5, an air damper 11 is pivotally mounted, with the possibility of rotation relative to the casing 9, the deviation of which is limited by the spring 12.

Pneumocentrifugal working body works as follows. The flow of material that has arrived at the top of the conical surface 1 is distributed in a uniform layer along the helical screws 2 and moves down to the straight blades 4 of the flat disk 3. At the point of vanishing from the flat disk 3, having received acceleration, mineral fertilizer granules fall into the air flow jet created by a blade fan 5 and are directed to the soil surface. The deflection value of the damper 11 and the direction of the air flow will depend on the granulometric composition of mineral fertilizers and, accordingly, on the speed of the air flow.

Compared to the known solution, the design of the adaptive pneumocentrifugal module of the machine for applying mineral and lime fertilizers makes it possible to increase the uniformity and increase the working width of the application of mineral and lime fertilizers by adapting the operating modes of the module depending on the granulometric composition of the applied material.

Claims (1)

An adaptive pneumocentrifugal module of a machine for applying mineral and lime fertilizers, which includes a conical surface located with a larger circle downwards, with rigidly fixed helical screws, and a flat disk on which straight blades are rigidly fixed; on a hollow shaft, which is pivotally mounted on a central shaft rigidly fixed to the bottom surface of a flat disk, in addition, the blade fan has a separate drive with the ability to control its speed, characterized in that an air damper is pivotally mounted on the edge of the blade fan casing, with the possibility of rotation relative to the casing and the deviation of which is limited by a spring.

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