All-round multi-spiral jet flow hole cleaning nozzle for inner wall of agricultural spraying machine medicine box

Abstract

Agricultural spraying machine medicine box inner wall all -round multi -spiral jet flow hole cleaning nozzle, belong to the dirt cleaning operation technology, in the barrel type water pipe is fixed on the upper part of the medicine box, the lower side wall of the water pipe is provided with water injection through -hole, the tire type nozzle is arranged between the protrusion and the axial positioning plate and wrapped outside the water injection through -hole on the barrel type water pipe, the tire type nozzle is provided with sealing ring at the two end clamping holes, preventing high pressure fluid from leaking from the two end contact surfaces, and can rotate freely in the axial direction under the action of high pressure fluid; eight jet flow holes are arranged on the circumferential side wall of the tire type nozzle in the circumferential direction, and the center lines of the upper, middle and lower rows of jet flow holes are arranged according to different polar radii of Archimedes spiral, so that the tire type nozzle can rotate automatically and uniformly in the circumferential direction under the action of the resultant force of the centrifugal force generated by the high pressure fluid in each jet flow hole, the cleaning intensity of the fluid is consistent at each position of the inner wall of the medicine box, the rotating speed is stable, the cleaning effect is good, the pesticide residue in the medicine box is reduced, and the environmental pollution is reduced.

Description

Technical Field

[0001] This invention belongs to the field of dirt cleaning operations, and mainly relates to a multi-helix jet nozzle for all-round cleaning of pesticide residues on the inner wall of a sprayer's tank. Background Technology

[0002] The use of large-scale plant protection machinery in agricultural production is increasing. As the container for pesticide solutions, the sprayer tank often retains pesticide residue on its inner wall during mixing. After spraying, this residue can cause environmental pollution and may even lead to chemical reactions that reduce pesticide efficacy during subsequent spraying operations, further polluting farmland and the environment. Therefore, cleaning the tank's interior is crucial. Currently, tank cleaning is mostly done manually using jet cleaning, which is inefficient and labor-intensive. Fixed nozzles spray in one or more directions, but this creates dead zones, resulting in incomplete cleaning and poor cleaning results. Existing rotary nozzles have randomly set nozzle angles, leading to uneven pressure and clogging, inconsistent rotation speeds, and inconsistent cleaning intensity within the tank, increasing cleaning time. Furthermore, the nozzles often have poor sealing, making them prone to leakage during rotation. Summary of the Invention

[0003] To address the problems existing in the prior art, the purpose of this invention is to utilize the existing pressurization system of the sprayer and combine it with the actual needs of cleaning the inner wall of the sprayer's medicine tank to provide a multi-spiral jet nozzle for cleaning the inner wall of an agricultural sprayer's medicine tank. This nozzle ensures that the centrifugal force generated by the high-pressure fluid ejected from each jet nozzle automatically and uniformly rotates circumferentially, and that the cleaning intensity of the fluid is consistent throughout the inner wall of the medicine tank. This results in good cleaning performance, stable rotation speed to prevent clogging, and comprehensive cleaning of the inner wall of the medicine tank without dead zones. It can effectively reduce pesticide residues in the medicine tank, thereby reducing environmental pollution.

[0004] To achieve the above objectives, the present invention provides the following technical solution: An external thread is provided on the upper end wall of the barrel-type water supply pipe. Four water injection holes are evenly distributed circumferentially on the lower side wall of the barrel-type water supply pipe. A tire-type nozzle is located between the lower axial protrusion of the barrel-type water supply pipe and the axial positioning plate. The axial positioning plate is fixed to the lower end of the barrel-type water supply pipe with screws. The tire-type nozzle completely encloses the water injection holes on the barrel-type water supply pipe. Sealing rings made of polytetrafluoroethylene are installed at both ends of the tire-type nozzle to prevent high-pressure water from leaking from the upper and lower contact surfaces between the tire-type nozzle and the barrel-type water supply pipe, and also to achieve axial rotation under the action of high-pressure fluid. From top to bottom, on the circumferential side wall of the tire-type nozzle... Eight jet holes are provided at the bottom, including three upper row jet holes (upper row No. 1, upper row No. 2, and upper row No. 3), two middle row jet holes (middle row No. 1 and middle row No. 2), and three lower row jet holes (lower row No. 1, lower row No. 2, and lower row No. 3). The center lines of the upper, middle, and lower row jet holes are arranged on the tire-type nozzle according to an Archimedean spiral with a polar diameter ratio of 1:2:1. This ensures that the tire-type nozzle rotates axially at a uniform speed under the combined centrifugal force generated by the high-pressure fluid being ejected from the eight jet holes in the same direction, and that the cleaning intensity of the fluid is consistent throughout the inner wall of the medicine tank.

[0005] This invention creates a tire-type nozzle with a three-dimensional multi-directional high-pressure water jet structure. The reverse thrust during the spraying of cleaning water causes the tire-type nozzle to rotate on its own. This not only eliminates the need for external power, but also ensures that the sprayed cleaning water can completely cover all parts of the inner wall of the tank, washing away all pesticide residues, including those adhering to corners, and draining them out of the tank. This prepares the equipment for subsequent spraying and effectively reduces pesticide residues in the tank, thereby reducing environmental pollution. The invention features a novel, unique, reasonable, and simple structure, low manufacturing cost, high operating efficiency, good cleaning effect, low labor intensity, convenient and reliable use, and no harm to the human body. Attached Figure Description

[0006] Figure 1 This is a three-dimensional structural diagram of the cleaning nozzle with multi-spiral jet holes on the inner wall of the pesticide tank of an agricultural sprayer. Figure 2 This is a two-dimensional structural diagram of the cleaning nozzle with multi-spiral jet holes on the inner wall of the pesticide tank of an agricultural sprayer. Figure 3 This is an isometric sectional view of a tire-type nozzle; Figure 4 This is a schematic diagram of the jet nozzles on a tire-type nozzle rotating in the direction of an Archimedean spiral. Figure 5 This is a schematic diagram showing the clockwise distribution of the jet orifices of a tire-type nozzle. Figure 6 This is a top sectional view of the No. 1 jet hole in the upper row; Figure 7 This is a top sectional view of the No. 2 jet hole in the upper row; Figure 8 This is a top sectional view of the No. 3 jet hole in the upper row; Figure 9 This is a top sectional view of the No. 1 jet hole in the middle row; Figure 10 This is a top sectional view of the No. 2 jet hole in the middle row; Figure 11 This is a top sectional view of the No. 1 jet hole in the lower row; Figure 12 This is a top sectional view of the No. 2 jet hole in the lower row; Figure 13 This is a top sectional view of the No. 3 jet hole in the lower row; Figure 14 This is a schematic diagram of the cleaning area inside the pesticide tank of an agricultural sprayer.

[0007] Part number description in the image: 1. External thread; 2. Barrel-type water pipe; 3. Tire-type nozzle; 4. Axial positioning plate; 5. Screws; 6. Water inlet hole; 7. Upper row of jet holes; 8. Middle row of jet holes; 9. Lower row of jet holes. Jet orifice; 301, sealing ring; 701, upper row No. 1 jet orifice; 702, upper row No. 2 jet orifice; 703, upper row No. 3 jet orifice; 801, middle row No. 1 jet orifice; 802, middle row No. 2 jet orifice; 803, middle row No. 3 jet orifice; 901, lower row No. 1 jet orifice; 902, lower row No. 2 jet orifice; 903, lower row No. 3 jet orifice.

[0008] L1 First-order height; L2 Second-order height; D1 First-order length; D2 Second-order length; h1 Distance from the center of the upper row No. 1 jet hole to the upper boundary of the upper layer of the circumferential sidewall; h2 Distance from the center of the upper row No. 2 jet hole to the upper boundary of the upper layer of the circumferential sidewall; h3 Distance from the center of the upper row No. 3 jet hole to the upper boundary of the upper layer of the circumferential sidewall; h4 Distance from the center of the middle row No. 1 jet hole to the upper boundary of the middle layer of the circumferential sidewall; h5 Distance from the center of the middle row No. 2 jet hole to the upper boundary of the middle layer of the circumferential sidewall; h6 Distance from the center of the lower row No. 1 jet hole to the upper boundary of the lower layer of the circumferential sidewall; h7 Distance from the center of the lower row No. 2 jet hole to the upper boundary of the lower layer of the circumferential sidewall; h8 Distance from the center of the lower row No. 3 jet hole to the upper boundary of the lower layer of the circumferential sidewall. Distance; a1 Eccentricity of jet hole No. 1 in the upper row; a2 Eccentricity of jet hole No. 2 in the upper row; a3 Eccentricity of jet hole No. 3 in the upper row; b1 Eccentricity of jet hole No. 1 in the middle row; b2 Eccentricity of jet hole No. 2 in the middle row; c1 Eccentricity of jet hole No. 1 in the lower row; c2 Eccentricity of jet hole No. 2 in the lower row; c3 Eccentricity of jet hole No. 3 in the lower row; Center part of the top of the inner wall of the medicine box in Region I; Outer part of the top of the inner wall of the cleaning medicine box in Region II; Edge part of the top of the inner wall of the medicine box in Region III; Upper half of the side wall of the inner wall of the medicine box in Region IV; Lower half of the side wall of the inner wall of the medicine box in Region V; Edge part of the bottom of the inner wall of the medicine box in Region VI; Outer part of the bottom of the inner wall of the medicine box in Region VII; Center part of the bottom of the inner wall of the medicine box in Region VIII. Detailed Implementation

[0009] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. An automatic rotating multi-directional cleaning nozzle for cleaning pesticide residues on the inner wall of an agricultural sprayer's pesticide tank is provided. The tire-type nozzle 3 has eight jet holes on its circumferential sidewall from top to bottom, including three upper row jet holes 7: upper row No. 1 jet hole 701, upper row No. 2 jet hole 702, and upper row No. 3 jet hole 703; two middle row jet holes 8: middle row No. 1 jet hole 801 and middle row No. 2 jet hole 802; and three lower row jet holes 9: lower row No. 1 jet hole 901, lower row No. 2 jet hole 902, lower row No. 3 jet hole 903, lower row No. 4 jet hole 902, lower row No. 5 jet hole 903, lower row No. 6 jet hole 904, lower row No. 705, lower row No. 6 jet hole 902, lower row No. 703, lower row No. 704, lower row No. 705, lower row No. 6 jet hole 902, lower row No. 705, lower row No. 706, lower row No. 707 ... The upper row of jet holes 7, the middle row of jet holes 8, and the lower row of jet holes 9 are arranged on the tire-type nozzle 3 according to an Archimedean spiral with a polar diameter ratio of 1:2:1. This ensures that the tire-type nozzle 3 rotates axially under the combined centrifugal force generated by the high-pressure fluid ejected from the eight jet holes. The rotational speed and cleaning intensity of the tire-type nozzle 3 are determined by the pressure of the high-pressure fluid, and the cleaning intensity of the fluid is uniform throughout the inner wall of the medicine tank.

[0010] The inner and outer walls of the upper and lower layers of the tire-type nozzle 3 are arc-shaped, while the inner and outer walls of the middle layer are cylindrical. The ratio of the chord length of the arc of the upper outer wall, the chord length of the arc of the lower outer wall, and the height of the middle wall is 3:3:2. The arc angle between the inner and outer walls of the upper and lower layers is 60°. Three upper row jet holes 7 are distributed on the upper layer of the circumferential side wall of the tire-type nozzle 3. Two middle row jet holes 8 are distributed on the middle layer of the circumferential side wall of the tire-type nozzle 3. Three lower row jet holes 9 are distributed on the lower layer of the circumferential side wall of the tire-type nozzle 3. Through the macroscopic layout of the jet holes, the high-pressure fluid sprayed by the tire-type nozzle 3 can cover the inner wall of the medicine tank in all directions.

[0011] The No. 1 jet hole 701 in the upper row is inclined upwards with the inner side lower than the outer side of the horizontal plane; the ratio of the eccentricity a1 of the No. 1 jet hole in the upper row to the upper circumference radius of the tire nozzle 3 is 2:5; the angle between the center line of the No. 1 jet hole 701 in the upper row and the perpendicular bisector of the upper tangent is 50°; the No. 1 jet hole 701 in the upper row is located in the upper half of the upper layer of the circumferential sidewall of the tire nozzle 3, and the ratio of the distance h1 from the center of the No. 1 jet hole 701 in the upper row to the upper boundary of the upper layer of the circumferential sidewall to the height of the upper layer of the circumferential sidewall is 1:4, which can be used as the starting point for other jet holes; the horizontal spacing ratio between the No. 1 jet hole 701 in the upper row and the No. 3 jet hole 903 in the lower row, and between the No. 1 jet hole 701 in the upper row and the No. 1 jet hole 801 in the middle row is 1:1. The upper row No. 2 jet hole 702 is inclined upward with the horizontal plane, with the inner side lower than the outer side; the ratio of the eccentricity a2 of the upper row No. 2 jet hole to the upper circumference radius of the tire-type nozzle is 3:5; the angle between the center line of the upper row No. 2 jet hole 702 and the perpendicular bisector of the upper tangent is 40°; the upper row No. 2 jet hole 702 is located in the middle part of the upper layer of the circumferential sidewall of the tire-type nozzle 3, and the ratio of the distance h2 from the center of the upper row No. 2 jet hole 702 to the upper boundary of the upper layer of the circumferential sidewall to the height of the upper layer of the circumferential sidewall is 1:2; the horizontal spacing ratio between the upper row No. 2 jet hole 702 and the middle row No. 1 jet hole 801, and between the upper row No. 2 jet hole 702 and the upper row No. 3 jet hole 703 is 1:0.9. The upper row No. 3 jet hole 703 is inclined upward with the horizontal plane, with the inner side lower than the outer side; the ratio of the eccentricity a3 of the upper row No. 3 jet hole to the upper circumference radius of the tire nozzle 3 is 4:5; the angle between the center line of the upper row No. 3 jet hole 703 and the perpendicular bisector of the upper tangent is 30°; the upper row No. 3 jet hole 703 is located at the center of the lower half of the upper layer of the circumferential sidewall of the tire nozzle 3; the ratio of the distance h3 from the center of the upper row No. 3 jet hole 703 to the upper boundary of the upper circumferential sidewall to the height of the upper circumferential sidewall is 3:4; the horizontal spacing ratio between the upper row No. 3 jet hole 703 and the upper row No. 2 jet hole 702, and between the upper row No. 3 jet hole 703 and the lower row No. 1 jet hole 901 is 0.9:1. By designing the microstructure of the upper row No. 1 jet hole 701, upper row No. 2 jet hole 702, and upper row No. 3 jet hole 703, and arranging the center line along the Archimedean spiral, the centrifugal force generated drives the nozzle to rotate axially. The eccentricity ratio of the upper row jet holes a1:a2:a3 is 2:3:4. Based on the principle that the larger the eccentricity of the jet hole, the greater the moment of inertia of the jet fluid, and the angles between the center line of the jet hole and the perpendicular bisector of the upper tangent are 50°, 40°, and 30° respectively, it is ensured that the fluid sprayed from the upper row jet holes 7 evenly covers the top area of ​​the inner wall of the medicine tank with consistent pressure and cleaning intensity, and has better anti-clogging performance.

[0012] The middle row No. 1 jet hole 801 is inclined upward with the horizontal plane, lower on the inside and higher on the outside; the ratio of the eccentricity b1 of the middle row No. 1 jet hole 801 to the circumference radius of the middle layer of the tire nozzle 3 is 3:5; the angle between the center line of the middle row No. 1 jet hole 801 and the perpendicular bisector of the middle layer tangent is 40°; the middle row No. 1 jet hole 801 is located at the center of the upper half of the middle layer of the circumferential sidewall of the tire nozzle 3, and the ratio of the distance from the center of the middle row No. 1 jet hole 801 to the upper boundary of the middle layer of the circumferential sidewall to the height of the middle layer of the circumferential sidewall is 1:4; the horizontal spacing ratio between the middle row No. 1 jet hole 801 and the upper row No. 1 jet hole 701 and the middle row No. 1 jet hole 801 and the upper row No. 2 jet hole 702 is 1:1. The middle row No. 2 jet hole 802 is inclined downward with the horizontal plane, higher on the inside and lower on the outside; the ratio of the eccentricity b2 of the middle row No. 2 jet hole to the circumference radius of the middle layer of the tire nozzle 3 is 3:5; the angle between the center line of the middle row No. 2 jet hole 802 and the perpendicular bisector of the middle layer is 40°; the middle row No. 2 jet hole 802 is located at the center of the lower half of the middle layer of the circumferential sidewall of the tire nozzle 3; the ratio of the distance from the center of the middle row No. 2 jet hole 802 to the upper boundary of the middle layer of the circumferential sidewall to the height of the middle layer of the circumferential sidewall is 3:4; the horizontal spacing ratio between the middle row No. 2 jet hole 802 and the lower row No. 1 jet hole 901, and between the middle row No. 2 jet hole 802 and the lower row No. 2 jet hole 902 is 0.9:1. By designing the microstructure of jet holes 801 and 802 in the middle row, and arranging the center line along the Archimedes spiral, the centrifugal force generated drives the nozzle to rotate axially. The angle between the center line of the jet hole and the perpendicular bisector of the upper sectional plane is ±40°, ensuring that the fluid sprayed from the upper row jet holes evenly covers the middle area of ​​the inner wall of the medicine tank with consistent pressure and cleaning intensity.

[0013] The lower row of jet orifice 901 is inclined downwards with the inner side higher than the outer side of the horizontal plane; the ratio of the eccentricity c1 of the lower row of jet orifice 901 to the lower circumference radius of the tire nozzle 3 is 4:5; the angle between the center line of the lower row of jet orifice 901 and the perpendicular bisector of the lower tangent is 50°; the lower row of jet orifice 901 is located at the center of the upper half of the lower layer of the circumferential sidewall of the tire nozzle 3, and the ratio of the distance from the center of the lower row of jet orifice 901 to the upper boundary of the lower layer of the circumferential sidewall to the height of the lower layer of the circumferential sidewall is 3:4; the horizontal spacing ratio between the lower row of jet orifice 901 and the upper row of jet orifice 703, and between the lower row of jet orifice 901 and the middle row of jet orifice 802 is 1:0.9. The second jet orifice 902 in the lower row is inclined downwards with the inner side higher than the outer side of the horizontal plane; the ratio of the eccentricity c2 of the second jet orifice in the lower row to the circumference radius of the lower layer of the tire nozzle 3 is 3:5; the angle between the center line of the second jet orifice 902 in the lower row and the perpendicular bisector of the lower layer is 40°; the second jet orifice 902 in the lower row is located in the middle part of the lower layer of the circumferential sidewall of the tire nozzle 3, and the ratio of the distance from the center of the second jet orifice 902 in the lower row to the upper boundary of the lower layer of the circumferential sidewall to the height of the lower layer of the circumferential sidewall is 1:2; the horizontal spacing ratio between the second jet orifice 902 in the lower row and the second jet orifice 802 in the middle row, and between the second jet orifice 902 in the lower row and the third jet orifice 903 in the lower row is 1:0.9. The lower row of jet orifices 903 is arranged in a downward-sloping configuration with the inner side higher than the outer side of the horizontal plane; the ratio of the eccentricity c3 of the lower row of jet orifices 903 to the lower circumference radius of the tire-type nozzle 3 is 2:5; the angle between the centerline of the lower row of jet orifices 903 and the perpendicular bisector of the lower tangent is 30°; the lower row of jet orifices 903 is located at the center of the lower half of the lower circumferential sidewall of the tire-type nozzle 3; the ratio of the distance from the center of the lower row of jet orifices 903 to the upper boundary of the lower circumferential sidewall to the height of the lower circumferential sidewall is 1:4; the horizontal spacing ratio between the lower row of jet orifices 903 and the lower row of jet orifices 902, and between the lower row of jet orifices 903 and the upper row of jet orifices 703 is 0.9:1. Through the microstructural design of the lower row No. 1 jet hole 901, lower row No. 2 jet hole 902, and lower row No. 3 jet hole 903, and the arrangement of the center line along the Archimedean spiral, the nozzle is driven to rotate axially under the combined action of the centrifugal force generated by the upper row jet hole 7; the eccentricity ratio of the lower row jet hole 9, c1:c2:c3, is 4:3:2. According to the principle that the larger the eccentricity of the jet hole, the greater the moment of inertia of the jet fluid, and at the same time, the angles between the center line of the jet hole and the perpendicular bisector of the upper tangent are 50°, 40°, and 30°, respectively, it is ensured that the fluid sprayed from the upper row jet hole 7 evenly covers the bottom area of ​​the inner wall of the medicine tank with consistent pressure and cleaning intensity, and has better anti-clogging performance.

[0014] The sealing ring 301 has a stepped cross-section, with the ratio of the second-stage height to the first-stage height (L2:L1) being 9:7, and the ratio of the second-stage length to the first-stage length (D2:D1) being 1:3. Fluid pressure causes the stepped sealing ring 301 to fit tightly against the barrel-type water pipe 6, effectively sealing and preventing liquid leakage from the connection. The high-pressure fluid also creates a horizontal gap between the inner side of the sealing ring 301 and the bayonet of the tire-type nozzle 3, allowing relative rotation between the sealing ring 301 and the tire-type nozzle 3, resulting in smooth and fluid rotation.

[0015] During operation, an external thread 1 is provided on the outer wall of the upper end of the barrel-type water supply pipe 2 for fixing the nozzle device and sealing the connection with the flexible high-pressure water pipe for external high-pressure fluid input. The high-pressure cleaning fluid fills the internal cavity of the tire-type nozzle 3 through the water injection holes 6 evenly distributed along the circumferential direction on the lower side wall of the barrel-type water supply pipe 2. The tire-type nozzle 3 is located between the axial protrusion in the lower part of the barrel-type water supply pipe 2 and the axial positioning plate 4. The axial positioning plate 4 is fixed to the lower end of the barrel-type water supply pipe 2 by screws 5. The tire-type nozzle 3 completely covers the water injection holes 6 on the barrel-type water supply pipe. Polytetrafluoroethylene (PTFE) is installed at both ends of the tire-type nozzle. The sealing ring 301, made of ethylene, can rotate axially within the bayonet of the tire-type nozzle 3. During operation, the high-pressure fluid impacts the stepped surface on the inner side of the sealing ring 301, causing the sealing ring 301 to adhere tightly to the outer wall of the barrel-type water pipe 2, thus sealing and preventing liquid leakage from the connection. When the high-pressure water flow impacts the stepped surface on the inner side of the plastic ring 301, a clearance fit is formed between the sealing ring 301 and the bayonet of the tire-type nozzle 3 in the horizontal direction. The sealing ring 301 and the tire-type nozzle 3 can rotate relative to each other, and the surface characteristics of the sealing ring 301 can reduce the relative friction between them. The centerlines of the upper row of jet holes 7, the middle row of jet holes 8, and the lower row of jet holes 9 are arranged on the tire-type nozzle according to an Archimedean spiral with a polar diameter ratio of 1:2:1. The distribution of the jet holes of the tire-type nozzle 3 ensures that the centrifugal force generated by the high-pressure fluid ejecting from the jet holes acts on the hole wall of the tire-type nozzle 3 in the same direction. The eccentric force generated at each hole position causes the tire-type nozzle 3 to be subjected to a tangential reaction force, thereby pushing the tire-type nozzle 3 to rotate counterclockwise automatically on the barrel-type water supply pipe 2. Under the pressure difference between the inner and outer walls of the tire-type nozzle 3 generated by the pressure of the high-pressure fluid itself, the high-pressure fluid is ejected from the upper row of jet holes 7, the middle row of jet holes 8, and the lower row of jet holes 9 to the upper, horizontal, and lower sides, respectively. The high-pressure fluid is sprayed to all parts of the inner wall of the medicine tank, and the cleaning intensity of the fluid is consistent throughout the inner wall of the medicine tank, washing away the residual medicine adhering to the inner wall of the medicine tank.

[0016] The high-pressure fluid ejected from the upper row of jet holes 7 is sprayed upwards to clean the top of the inner wall of the medicine tank. The ratio of the eccentricity a1 of the upper row No. 1 jet hole 701 to the upper circumference radius of the tire-type nozzle 3 is 2:5. The angle between the centerline of the upper row No. 1 jet hole 701 and the perpendicular bisector of the upper tangent is 50°, ensuring that the high-pressure fluid ejected from the upper row No. 1 jet hole 701 cleans the inner wall of the medicine tank in the top center part, i.e., area I, and that the cleaning intensity is consistent with that of other parts. The ratio of the eccentricity a2 of the upper row No. 2 jet hole 702 to the upper circumference radius of the tire-type nozzle 3 is 3:5. The ratio of the eccentricity a2 of the upper row No. 2 jet hole 702 to the upper circumference radius of the tire-type nozzle 3 is 3:5. The centerline of the upper row of jet nozzles 702 forms an angle of 40° with the perpendicular bisector of the upper section, ensuring that the high-pressure water jet from the upper row of jet nozzles 702 cleans the outer part of the top of the medicine tank, i.e., the inner wall of the medicine tank in area II, and that the cleaning intensity is consistent with that of other parts. The eccentricity a3 of the upper row of jet nozzles 703 is in a ratio of 4:5 to the upper circumference radius of the tire-type nozzle 3. The centerline of the upper row of jet nozzles 703 forms an angle of 30° with the perpendicular bisector of the upper section, ensuring that the high-pressure water jet from the upper row of jet nozzles 703 cleans the inner wall of the medicine tank at the top edge, i.e., the inner wall of the medicine tank in area III, and that the cleaning intensity is consistent with that of other parts.

[0017] The high-pressure fluid ejected from the middle jet orifice 8 cleans the sidewall of the inner wall of the medicine tank. The ratio of the eccentricity b1 of the middle jet orifice 801 to the circumference of the middle layer of the tire-type nozzle is 3:5. The angle between the centerline of the middle jet orifice 801 and the perpendicular bisector of the middle layer is 40°, ensuring that the high-pressure fluid ejected from the middle jet orifice 801 cleans the upper half of the sidewall of the medicine tank, i.e., the inner wall of the medicine tank in area IV, and the cleaning intensity is consistent with all other areas. The ratio of the eccentricity b2 of the middle jet orifice 802 to the circumference of the middle layer of the tire-type nozzle 3 is 3:5. The angle between the centerline of the middle jet orifice 802 and the perpendicular bisector of the middle layer is 40°, ensuring that the high-pressure fluid ejected from the middle jet orifice 802 cleans the lower half of the sidewall of the medicine tank, i.e., the inner wall of the medicine tank in area V, and the cleaning intensity is consistent with all other areas.

[0018] The high-pressure water jet from the lower jet nozzle 9 sprays downwards to clean the bottom of the medicine tank. The ratio of the eccentricity c1 of the lower jet nozzle 1 (901) to the lower circumference radius of the tire-type nozzle 3 is 4:5. The angle between the centerline of the lower jet nozzle 1 (901) and the perpendicular bisector of the lower sectional surface is 50°, ensuring that the high-pressure fluid from the lower jet nozzle 1 (901) cleans the bottom edge of the medicine tank, i.e., the inner wall of the medicine tank in area VI, and that the cleaning intensity is consistent throughout. The ratio of the eccentricity c2 of the lower jet nozzle 2 (902) to the lower circumference radius of the tire-type nozzle 3 is 3:5. The angle between the centerline of the lower jet nozzle 2 (902) and the lower sectional surface is 50°. The perpendicular bisector angle is 40° to ensure that the high-pressure fluid ejected from the second jet hole 902 in the lower row cleans the outer part of the bottom of the medicine tank, i.e., the inner wall of the medicine tank in area VII, and the cleaning intensity is consistent with all other parts. The ratio of the eccentricity c3 of the third jet hole 903 in the lower row to the lower circumference radius of the tire-type nozzle 3 is 2:5. The angle between the center line of the third jet hole 903 in the lower row and the perpendicular bisector of the lower sectional surface is 30° to ensure that the high-pressure fluid ejected from the third jet hole 903 in the lower row cleans the central part of the bottom of the medicine tank, i.e., the inner wall of the medicine tank in area VIII, and the cleaning intensity is consistent with all other parts. Wastewater is discharged from the outlet at the bottom of the medicine tank.

Claims

1. A cleaning nozzle with omnidirectional multi-spiral jet holes on the inner wall of an agricultural sprayer's medicine tank, characterized in that: An external thread (1) is provided on the upper end wall of the barrel-type water supply pipe (2). Four water injection holes (6) are evenly distributed along the circumferential direction on the lower side wall of the barrel-type water supply pipe (2). A tire-type nozzle (3) is installed between the lower axial protrusion of the barrel-type water supply pipe (2) and the axial positioning plate (4). The axial positioning plate (4) is fixed to the lower end of the barrel-type water supply pipe (2) by screws (5). The tire-type nozzle (3) completely covers the water injection holes (6) on the barrel-type water supply pipe (2). Sealing rings (301) made of polytetrafluoroethylene are installed at the two ends of the tire-type nozzle (3). Eight jet holes are opened from top to bottom on the circumferential side wall of the tire-type nozzle (3). The three upper row jet holes (7) include upper row No. 1 jet hole (701), upper row No. 2 jet hole (702), and upper row No. 3 jet hole (703). The two middle row jet holes (8) include middle row No. 1 jet hole (801) and middle row No. 2 jet hole (802). The three lower row jet holes (9) are arranged in a downward inclined position with the horizontal plane, including lower row No. 1 jet hole (901), lower row No. 2 jet hole (902), and lower row No. 3 jet hole (903). The center lines of the upper row jet holes (7), middle row jet holes (8) and lower row jet holes (9) are arranged on the tire nozzle (3) according to the Archimedes spiral with a polar diameter ratio of 1:2:

1.

2. The cleaning nozzle with omnidirectional multi-spiral jet holes on the inner wall of the agricultural sprayer's medicine tank according to claim 1, characterized in that, The inner and outer walls of the upper and lower layers of the tire-type nozzle (3) are arc-shaped, and the inner and outer walls of the middle layer are cylindrical. The ratio of the chord length of the arc of the upper outer wall, the chord length of the arc of the lower outer wall, and the height of the middle wall is 3:3:

2. The arc angle between the inner and outer walls of the upper and lower layers is 60°. Three upper row jet holes (7) are distributed on the upper layer of the circumferential sidewall of the tire-type nozzle (3). Two middle row jet holes (8) are distributed on the middle layer of the circumferential sidewall of the tire-type nozzle (3). Three lower row jet holes (9) are distributed on the lower layer of the circumferential sidewall of the tire-type nozzle (3).

3. The cleaning nozzle with omnidirectional multi-spiral jet holes on the inner wall of the agricultural sprayer's medicine tank according to claim 1, characterized in that, The No. 1 jet hole (701) in the upper row is inclined upward with the inner side lower than the outer side of the horizontal plane; the ratio of the eccentricity (a1) of the No. 1 jet hole (701) in the upper row to the upper circumference radius of the tire nozzle (3) is 2:5; the angle between the center line of the No. 1 jet hole (701) in the upper row and the perpendicular bisector of the upper tangent is 50°; the No. 1 jet hole (701) in the upper row is located in the upper half of the upper layer of the circumferential sidewall of the tire nozzle (3); the ratio of the distance (h1) from the center of the No. 1 jet hole (701) in the upper row to the upper boundary of the upper layer of the circumferential sidewall to the height of the upper layer of the circumferential sidewall is 1:4, and it serves as the starting point for other jet holes; the horizontal spacing ratio between the No. 1 jet hole (701) in the upper row and the No. 3 jet hole (903) in the lower row and between the No. 1 jet hole (701) in the upper row and the No. 1 jet hole (801) in the middle row is 1:

1.

4. The cleaning nozzle with omnidirectional multi-spiral jet holes on the inner wall of the agricultural sprayer's medicine tank according to claim 1, characterized in that, The No. 2 jet hole (702) in the upper row is inclined upward with the inner side lower than the outer side of the horizontal plane; the ratio of the eccentricity (a2) of the No. 2 jet hole (702) in the upper row to the upper circumference radius of the tire nozzle (3) is 3:5; the angle between the center line of the No. 2 jet hole (702) in the upper row and the perpendicular bisector of the upper tangent is 40°; the No. 2 jet hole (702) in the upper row is located in the middle part of the upper layer of the circumferential sidewall of the tire nozzle (3); the ratio of the distance (h2) from the center of the No. 2 jet hole (702) in the upper row to the upper boundary of the upper layer of the circumferential sidewall to the height of the upper layer of the circumferential sidewall is 1:2; the ratio of the horizontal spacing between the No. 2 jet hole (702) in the upper row and the No. 1 jet hole (801) in the middle row and the No. 2 jet hole (702) in the upper row and the No. 3 jet hole (703) in the upper row is 1:0.

9.

5. The cleaning nozzle with omnidirectional multi-spiral jet holes on the inner wall of the agricultural sprayer's medicine tank according to claim 1, characterized in that, The No. 3 jet hole (703) in the upper row is inclined upward with the inner side lower than the outer side of the horizontal plane; the ratio of the eccentricity (a3) ​​of the No. 3 jet hole (703) in the upper row to the upper circumference radius of the tire nozzle (3) is 4:5; the angle between the center line of the No. 3 jet hole (703) in the upper row and the perpendicular bisector of the upper tangent is 30°; the No. 3 jet hole (703) in the upper row is located at the center of the lower half of the upper layer of the circumferential sidewall of the tire nozzle (3); the ratio of the distance (h3) from the center of the No. 3 jet hole (703) in the upper row to the upper boundary of the upper layer of the circumferential sidewall to the height of the upper layer of the circumferential sidewall is 3:4; the ratio of the horizontal spacing between the No. 3 jet hole (703) in the upper row and the No. 2 jet hole (702) in the upper row and the No. 3 jet hole (703) in the upper row and the No. 1 jet hole (901) in the lower row is 0.9:

1.

6. The cleaning nozzle with omnidirectional multi-spiral jet holes on the inner wall of the agricultural sprayer's medicine tank according to claim 1, characterized in that, The No. 1 jet hole (801) in the middle row is inclined upward with the inner side lower than the outer side of the horizontal plane; the ratio of the eccentricity (b1) of the No. 1 jet hole (801) in the middle row to the circumference radius of the middle layer of the tire nozzle (3) is 3:5; the angle between the center line of the No. 1 jet hole (801) in the middle row and the perpendicular bisector of the middle layer is 40°; the No. 1 jet hole (801) in the middle row is located at the center of the upper half of the middle layer of the circumferential sidewall of the tire nozzle (3); the ratio of the distance (h4) from the center of the No. 1 jet hole (801) in the middle row to the upper boundary of the middle layer of the circumferential sidewall to the height of the middle layer of the circumferential sidewall is 1:4; the ratio of the horizontal spacing between the No. 1 jet hole (801) in the middle row and the No. 1 jet hole (701) in the upper row and the No. 2 jet hole (702) in the middle row is 1:

1.

7. The cleaning nozzle with omnidirectional multi-spiral jet holes on the inner wall of the agricultural sprayer's medicine tank according to claim 1, characterized in that, The No. 2 jet hole (802) in the middle row is inclined downward with the inner side higher than the outer side of the horizontal plane; the ratio of the eccentricity (b2) of the No. 2 jet hole (802) in the middle row to the circumference radius of the middle layer of the tire nozzle (3) is 3:5; the angle between the center line of the No. 2 jet hole (802) in the middle row and the perpendicular bisector of the middle layer is 40°; the No. 2 jet hole (802) in the middle row is located at the center of the lower half of the middle layer of the circumferential sidewall of the tire nozzle (3); the ratio of the distance (h5) from the center of the No. 2 jet hole (802) in the middle row to the upper boundary of the middle layer of the circumferential sidewall to the height of the middle layer of the circumferential sidewall is 3:4; the ratio of the horizontal spacing between the No. 2 jet hole (802) in the middle row and the No. 1 jet hole (901) in the lower row and the No. 2 jet hole (802) in the middle row and the No. 2 jet hole (902) in the lower row is 0.9:

1.

8. The cleaning nozzle with omnidirectional multi-spiral jet holes on the inner wall of the agricultural sprayer's medicine tank according to claim 1, characterized in that, The No. 1 jet hole (901) in the lower row is arranged in a downward tilt with the inner side higher than the outer side of the horizontal plane; the ratio of the eccentricity (c1) of the No. 1 jet hole (901) in the lower row to the lower circumference radius of the tire nozzle (3) is 4:5; the angle between the center line of the No. 1 jet hole (901) in the lower row and the perpendicular bisector of the lower layer is 50°; the No. 1 jet hole (901) in the lower row is located at the center of the upper half of the lower layer of the circumferential sidewall of the tire nozzle (3); the ratio of the distance (h6) from the center of the No. 1 jet hole (901) in the lower row to the upper boundary of the lower layer of the circumferential sidewall to the height of the lower layer of the circumferential sidewall is 3:4; the ratio of the horizontal spacing between the No. 1 jet hole (901) in the lower row and the No. 3 jet hole (703) in the upper row and the No. 1 jet hole (901) in the lower row and the No. 2 jet hole (802) in the middle row is 1:0.

9.

9. The cleaning nozzle with omnidirectional multi-spiral jet holes on the inner wall of the agricultural sprayer's medicine tank according to claim 1, characterized in that, The second jet hole (902) in the lower row is inclined downwards with the inner side higher than the outer side of the horizontal plane; the ratio of the eccentricity (c2) of the second jet hole (902) in the lower row to the lower circumference radius of the tire nozzle (3) is 3:5; the angle between the center line of the second jet hole (902) in the lower row and the perpendicular bisector of the lower tangent is 40°; the second jet hole (902) in the lower row is located in the middle part of the lower circumferential sidewall of the tire nozzle (3); the ratio of the distance (h7) from the center of the second jet hole (902) in the lower row to the upper boundary of the lower circumferential sidewall to the height of the lower circumferential sidewall is 1:2; the ratio of the horizontal spacing between the second jet hole (902) in the lower row and the second jet hole (802) in the middle row and the second jet hole (902) in the lower row and the third jet hole (903) in the lower row is 1:0.

9.

10. The cleaning nozzle with omnidirectional multi-spiral jet holes on the inner wall of the agricultural sprayer's medicine tank according to claim 1, characterized in that, The lower row No. 3 jet hole (903) is arranged in a downward tilt with the inner side higher than the outer side of the horizontal plane; the ratio of the eccentricity (c3) of the lower row No. 3 jet hole (903) to the lower circumference radius of the tire nozzle (3) is 2:5; the angle between the center line of the lower row No. 3 jet hole (903) and the perpendicular bisector of the lower tangent is 30°; the lower row No. 3 jet hole (903) is located at the center of the lower half of the lower half of the circumferential sidewall of the tire nozzle (3); the ratio of the distance (h8) from the center of the lower row No. 3 jet hole (903) to the upper boundary of the lower circumferential sidewall to the height of the lower circumferential sidewall is 1:4; the horizontal spacing ratio between the lower row No. 3 jet hole (903) and the lower row No. 2 jet hole (902), and between the lower row No. 3 jet hole (903) and the upper row No. 1 jet hole (701) is 0.9:

1.

11. The cleaning nozzle with omnidirectional multi-spiral jet holes on the inner wall of the agricultural sprayer's medicine tank according to claim 1, characterized in that, The sealing ring (301) has a stepped cross section, with the ratio of the second-order height (L2) to the first-order height (L1) being 9:7, and the ratio of the second-order length (D2) to the first-order length (D1) being 1:3.

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