Hydraulically driven weeding device for paddy field between rows

Abstract

The utility model belongs to agricultural machinery, and the rigid pipe and the sleeve are coaxial, the fixed blade is fixed on the outside of the sleeve, the cylindrical shaft is radially and axially positioned in the coaxial cavity of the rigid pipe and the sleeve and is peripherally rotatable, the lower end of the cylindrical shaft is located outside the lower end of the sleeve, the bucket-shaped nozzle is fixed on the lower end of the cylindrical shaft, the moving blade and the spiral blade are fixed on the outer wall of the bucket-shaped nozzle from top to bottom, the moving blade is located below the fixed blade and is in shearing cooperation with each other, the tangential through hole is opened on the tangent direction of the bottom end side wall of the bucket-shaped nozzle, and the tangential through hole is inclined upward from inside to outside as a whole.

Description

Technical Field

[0001] This invention belongs to agricultural machinery and mainly relates to a weeding device between rows of tillage suitable for use in paddy fields. Background Technology

[0002] Weeds between rice rows in paddy fields compete with rice plants for sunlight and nutrients, hindering rice growth and development, and affecting rice yield if not treated promptly. Currently, weed control in paddy fields is mainly divided into physical and chemical methods. Physical weed control is environmentally friendly, producing no pesticide residues in crops. Mechanical weeding, a type of physical weed control, is more efficient and safer than manual weeding and is widely used. However, existing weeding devices are generally passive cage-type, which can only press weeds into and remove them from the paddy field soil, but cannot cut or shred them, resulting in low weed mortality and low weed control rates. To solve these problems, a new structure for weeding operations between paddy field rows is being developed, which can significantly improve the quality of weed control and support green organic rice production. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the prior art and, in combination with the actual needs of current paddy field inter-row weeding operations, to develop and design a hydraulically driven inter-row weeding device for paddy fields, so as to achieve high quality weeding, high weed mortality rate, and low environmental pollution.

[0004] The purpose of this invention is achieved as follows: A fixed sleeve is coaxially mounted on the lower end of a rigid tube. A fixed blade is fixed on the outside of the sleeve. A cylindrical shaft is radially and axially positioned and rotatably mounted in the inner cavity coaxial with the rigid tube and the sleeve. The lower end of the cylindrical shaft is located outside the lower end of the sleeve. A barrel-shaped nozzle is fixed on the lower end of the cylindrical shaft. A moving blade and a spiral blade are fixed sequentially from top to bottom on the outer wall of the barrel-shaped nozzle. The moving blade is located below the fixed blade and they are in shearing engagement with each other. A tangential through hole is opened along the tangential direction on the side wall of the bottom end of the barrel-shaped nozzle. The tangential through hole is inclined upward from the inside to the outside. This constitutes a hydraulically driven inter-row weeding device for paddy fields.

[0005] This invention utilizes the principle of hydraulic drive to rotate the moving blade and the spiral blade, and the shearing method of the moving blade and the fixed blade working together to cut and crush weeds. It realizes hydraulically driven spiral output and shearing and crushing mechanical weeding operation, and has the characteristics of novel, unique and reasonable structure, high weeding efficiency and high weed mortality rate, and no environmental pollution. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of a hydraulically driven weeding device for inter-row cultivation in paddy fields.

[0007] Figure 2 yes Figure 1 Sectional view along line A-A.

[0008] Part number description in the image:

[0009] 1. Rigid tube, 2. Cylindrical shaft, 3. Sleeve, 4. Fixed blade, 5. Moving blade, 6. Barrel nozzle, 7. Tangential through hole, 8. Spiral blade. Detailed Implementation

[0010] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. A hydraulically driven inter-row weeding device for paddy fields includes a fixed sleeve 3 coaxially mounted on the lower end of a rigid pipe 1. A fixed blade 4 is fixed on the outside of the sleeve 3. A cylindrical shaft 2 is radially and axially positioned and rotatably mounted in the inner cavity coaxial with the rigid pipe 1 and the sleeve 3. The lower end of the cylindrical shaft 2 is located outside the lower end of the sleeve 3. A barrel-shaped nozzle 6 is fixed on the lower end of the cylindrical shaft 2. Moving blades 5 and helical blades 8 are fixed sequentially from top to bottom on the outer wall of the barrel-shaped nozzle 6. The moving blades 5 are located below the fixed blades 4 and are in shear-fitting with each other. A tangential through hole 7 is opened along the tangential direction on the bottom side wall of the barrel-shaped nozzle 6, and the tangential through hole 7 is inclined upward from the inside to the outside.

[0011] In use, the device is fixed to a paddy field weeding and cultivation implement that provides pressurized liquid via rigid pipe 1. The pressurized liquid enters the barrel cavity of the barrel nozzle 6 through rigid pipe 1 and cylindrical shaft 2. During operation, the barrel nozzle 6 is positioned above the paddy field seedlings and moved forward. As needed for weeding and cultivation, the barrel nozzle 6 is lowered and inserted into the paddy field soil layer through rigid pipe 1. The externally input pressurized liquid enters the barrel cavity of the barrel nozzle 6 through rigid pipe 1 and cylindrical shaft 2, and then flows through the tangential through-hole. 7. The sprayed liquid, driven by the reaction force of the sprayed pressure liquid flow, drives the barrel nozzle 6 to rotate the moving blade 5 in a circular motion. As the device moves forward, it works in conjunction with the shearing action of the fixed blade 4 to cut and crush the weeds in the paddy field. At the same time, the spiral blade 8 digs the weeds out of the mud layer of the paddy field and outputs them upward, so that the roots of the weeds are separated from the soil. Based on the upwardly inclined tangential through hole 7, the sprayed liquid flow is directed upward, which in turn throws the crushed weeds onto the surface of the paddy field soil and water layer, greatly improving the mortality rate of weeds.

Claims

1. A hydraulically driven inter-row weeding device for paddy fields, characterized in that: A fixed sleeve (3) is coaxially mounted on the lower end of the rigid tube (1). A fixed blade (4) is fixed on the outside of the sleeve (3). A cylindrical shaft (2) is radially and axially positioned and rotatably mounted in the inner cavity coaxial with the rigid tube (1) and the sleeve (3). The lower end of the cylindrical shaft (2) is located outside the lower end of the sleeve (3). A barrel nozzle (6) is fixed on the lower end of the cylindrical shaft (2). A moving blade (5) and a spiral blade (8) are fixed on the outer wall of the barrel nozzle (6) from top to bottom. The moving blade (5) is located below the fixed blade (4) and they are in shear fit with each other. A tangential through hole (7) is opened on the bottom side wall of the barrel nozzle (6) along the tangential direction. The tangential through hole (7) is inclined upward from the inside to the outside.

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