CN-117296566-B - Pneumatic driving type paddy field inter-row weeding device

Abstract

A pneumatic driven weeding device for paddy field cultivation space belongs to agricultural machinery, a fixed sleeve is coaxially arranged on the lower end part of a rigid pipe, fixed blades are fixedly arranged on the outside of the sleeve, a barrel type shaft is radially and axially positioned in an inner cavity of the rigid pipe and the sleeve, and is circumferentially and rotatably assembled, the lower end part of the barrel type shaft is positioned on the outside of the lower end of the sleeve, a barrel type spray head is fixedly arranged on the lower end part of the barrel type spray head, a movable blade and a helical blade are sequentially and fixedly arranged on the outer wall surface of the barrel type spray head from top to bottom, the movable blade is positioned below the fixed blades, tangential through holes are formed on the side wall of the bottom end of the barrel type spray head along the tangential direction, and two ends of a liquid medicine conveying hose are respectively fixedly connected to a liquid medicine one-way valve and the rigid pipe.

Inventors

• WANG QI
• KONG YAN
• XU HAO
• ZHANG ZHANHE
• REN BAORUI
• Yu Benjia
• WANG JINWU
• QI LONG
• ZHOU WENQI

Assignees

• 东北农业大学

Dates

Publication Date

20260512

Application Date

20231031

Claims (1)

1. 1. A pneumatic driving type paddy field inter-cultivation weeding device is characterized in that a sleeve (5) is fixedly arranged on the lower end portion of a rigid pipe (3) in a coaxial mode, a fixed blade (6) is fixedly arranged on the outer portion of the sleeve (5), a cylindrical shaft (4) is radially and axially positioned in an inner cavity of the rigid pipe (3) and the coaxial portion of the sleeve (5) in a circumferentially rotatable mode, the lower end portion of the cylindrical shaft (4) is located on the outer portion of the lower end portion of the sleeve (5), a barrel type spray head (8) is fixedly arranged on the lower end portion of the cylindrical shaft (4), a movable blade (7) and a spiral blade (10) are sequentially fixedly arranged on the outer wall surface of the barrel type spray head (8) from top to bottom, the movable blade (7) is located below the fixed blade (6) and is in shearing fit with each other, a tangential through hole (9) is formed in the side wall of the bottom end of the barrel type spray head (8), the tangential through hole (9) integrally inclines upwards from inside to outside, and two ends of a liquid medicine conveying hose (2) are fixedly connected to a one-way valve (1) and the rigid pipe (3) respectively.

Description

Pneumatic driving type paddy field inter-row weeding device Technical Field The invention belongs to agricultural machinery, and mainly relates to a weeding device suitable for weeding operation between paddy field cultivation rows. Background Weeds are an unavoidable environmental factor during the growth of rice, which severely affects the yield of rice. Mechanical weeding is used as a physical weeding mode, and has become one of main modes of paddy field cultivation weeding due to the advantages of no environmental pollution, no drug residue in crops, environmental protection, safety and the like. However, the existing weeding device between paddy field cultivation rows can only pick out weeds from paddy field soil, so that the weeds can float on the water surface or are buried in the paddy field soil in a pressing mode, the purpose and effect of weed death cannot be guaranteed and achieved, and meanwhile rice seedlings and root systems of the rice seedlings are damaged easily. The chemical weeding mode of applying herbicide is widely used due to the characteristics of high efficiency, simple operation and the like, but the application amount of herbicide causes the problems of crop pesticide residue, environmental pollution and the like. Therefore, the novel mechanical paddy field inter-row weeding device with the novel structure, which can synchronously and reasonably apply herbicide, is designed, can effectively improve the weeding rate and the operation quality, and provides a guarantee for the production of green organic rice. Disclosure of Invention The invention aims to solve the problems in the prior art, combines the actual requirements of weeding operation between the current paddy field cultivation rows, develops and designs a pneumatic driving type weeding device between the paddy field cultivation rows, and achieves the purposes of good weeding quality, high weed death rate and small environmental pollution. The invention aims to realize that a sleeve is fixedly arranged on the lower end part of a rigid pipe in a coaxial way, a fixed blade is fixedly arranged on the outside of the sleeve, a barrel type shaft is radially and axially positioned and circumferentially rotatably assembled in an inner cavity of the rigid pipe and the sleeve in the coaxial way, the lower end part of the barrel type shaft is positioned on the outside of the lower end of the sleeve, a barrel type spray head is fixedly arranged on the lower end part of the barrel type shaft, a movable blade and a helical blade are sequentially and fixedly arranged on the outer wall surface of the barrel type spray head from top to bottom, the movable blade is positioned below the fixed blade and mutually forms shearing fit, a tangential through hole is formed on the side wall of the bottom end of the barrel type spray head in a tangential direction, the tangential through hole is integrally inclined upwards from inside to outside, and two ends of a liquid medicine conveying hose are fixedly connected with a liquid medicine one-way valve and the rigid pipe respectively, so as to form the pneumatic driving type paddy field intertillage weeding device. The invention uses the pneumatic principle to drive the movable blade to rotate, cuts and pulverizes weeds in a shearing mode matched with the fixed blade, and is matched with an air flow conveying and spraying liquid herbicide structure to chemically remove and eradicate the weeds, thereby realizing the combined operation of shearing and pulverizing type mechanical weeding and air flow conveying chemical agent weeding. Drawings FIG. 1 is a schematic structural view of a pneumatically driven inter-row weeding device for paddy field cultivation; FIG. 2 is a sectional view taken along the direction A-A in FIG. 1; Part number description in the drawings: 1. The medical liquid one-way valve, 2, a medical liquid conveying hose, 3, a rigid pipe, 4, a cylinder type shaft, 5, a sleeve, 6, a fixed blade, 7, a movable blade, 8, a barrel type spray head, 9, a tangential through hole, 10 and a spiral blade. Detailed Description The following describes the inventive embodiments in detail with reference to the drawings. A pneumatic driving type paddy field inter-cultivation weeding device comprises a fixed sleeve 5 coaxially arranged on the lower end of a rigid pipe 3, a fixed blade 6 fixedly arranged on the outside of the sleeve 5, a barrel type shaft 4 radially and axially positioned and circumferentially rotatably assembled in an inner cavity coaxially arranged between the rigid pipe 3 and the sleeve 5, the lower end of the barrel type shaft 4 is positioned outside the lower end of the sleeve 5, a barrel type spray head 8 is fixedly arranged on the lower end of the barrel type shaft 4, a movable blade 7 and a helical blade 10 are sequentially fixedly arranged on the outer wall surface of the barrel type spray head 8 from top to bottom, the movable blade 7 is positioned below the fixed blade 6 and is