Hand-held aperture adjustable fertilizing long pole

Abstract

This utility model discloses a handheld fertilizer applicator with adjustable orifice diameter, mainly relating to a fertilizer applicator. It includes a fertilizer box, with a telescopic tube fixedly connected to the lower surface of the fertilizer box. An adjustment structure is provided at the end of the telescopic tube away from the fertilizer box. The adjustment structure includes a connecting tube fixedly connected to the telescopic tube. A support tube is fixedly connected to the end of the connecting tube away from the telescopic tube. An adjustment frame is fixedly connected to the outer arc surface of the support tube. An adjustment rod is rotatably connected to the inner wall of the adjustment frame. A rectangular block is threadedly connected to the arc surface of the adjustment rod. The rectangular block is slidably connected to the inner wall of the adjustment frame. A round tube is fixedly connected to the side of the rectangular block near the support tube. The beneficial effects of this utility model are: by using different orifice diameter discharge holes on the round tube to precisely align with the outlet of the connecting tube, the fertilizer outflow orifice diameter can be conveniently adjusted to meet the needs of different fertilizer application amounts. A baffle controls the start and stop of fertilization.

Description

Technical Field

[0001] This utility model relates to the field of fertilizer applicator technology, and in particular to a handheld fertilizer applicator with adjustable aperture. Background Technology

[0002] The fertilizer applicator is a handheld fertilizer applicator widely used in agricultural planting, horticulture and other fields. It consists of a fertilizer box, a connecting tube and a long pole with an opening and closing mechanism.

[0003] Existing technologies, such as the utility model patent with publication number CN207885186U, disclose a handheld fertilizer applicator. This patent includes a hopper, an arm support, a handle, a base, and a swivel disc. The arm support is fixedly connected to one end of the hopper, and the base is fixedly connected to the bottom of the hopper. A discharge port is provided at the bottom of the hopper. The swivel disc is located between the base and the hopper and below the discharge port. The handle is connected to the lower part of the hopper and is located directly below the arm support. A switch assembly for controlling the opening and closing of the discharge port is provided inside the handle. The switch assembly includes a switch handle, an elastic element, and a limit adjustment block. The elastic element has an arc-shaped structure, with one end connected to the handle and the other end abutting against the switch handle. One end of the switch handle is provided with a first positioning tooth arranged obliquely, and the other end is connected to a baffle plate located at the bottom of the hopper to block the discharge port. The limit adjustment block is provided with a second positioning tooth that matches the first positioning tooth. This utility model has the advantages of stable handheld operation, convenient operation, uniform fertilization, simple structure, and easy manufacturing.

[0004] The inventors discovered the following problems in their daily work when using the handheld fertilizer applicator: the amount of fertilizer applied is extremely inconvenient to adjust and lacks precision. It usually relies on a fixed-diameter discharge port or requires changing the end accessories with different diameters, making it difficult to quickly, continuously and accurately meet the fertilizer application needs of different crops or growth stages on the job site, resulting in low work efficiency. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where the long rod lacks a structure for adjusting the feeding speed, thus failing to meet the needs of various fertilizer application rates.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a handheld adjustable-aperture fertilizer applicator, including a fertilizer box. A telescopic tube is fixedly connected to the lower surface of the fertilizer box. An adjustment structure is provided at the end of the telescopic tube away from the fertilizer box. The adjustment structure includes a connecting tube, which is fixedly connected to the telescopic tube. A support tube is fixedly connected to the end of the connecting tube away from the telescopic tube. An adjustment frame is fixedly connected to the outer arc surface of the support tube. An adjustment rod is rotatably connected to the inner wall of the adjustment frame. A rectangular block is threadedly connected to the arc surface of the adjustment rod. The rectangular block is slidably connected to the inner wall of the adjustment frame. The side of the rectangular block closest to the support tube is fixed. A circular tube is connected to the inner wall of a support tube. The circular tube has several feeding holes on its surface corresponding to the position of the connecting tube. The diameter of the feeding holes increases from top to bottom. An operating tube is fixedly connected to the upper end of the support tube. A sliding rod is slidably connected to the upper end of the support tube. A baffle is fixedly connected to the lower end of the sliding rod. The baffle is located at the lower end of the connecting tube and is slidably connected to the inner wall of the circular tube. A handle is fixedly connected to the upper end of the sliding rod. The surface of the handle is slidably connected to the operating tube. A spring is fixedly connected to the upper surface of the handle. The end of the spring away from the handle is fixedly connected to the operating tube.

[0007] The above components achieve the following effects: by using the different diameter discharge holes on the round tube to precisely align with the outlet of the connecting tube, the size of the fertilizer outflow hole can be easily adjusted to meet the needs of different fertilizer application amounts, and the start and stop of fertilization can be controlled by the baffle.

[0008] Preferably, a number of scale lines are provided on one side of the adjustment frame corresponding to the position of the feeding hole.

[0009] The effect achieved by the above components is that the scale lines provide intuitive visual indication, allowing users to easily and quickly determine the position of the corresponding feed hole based on the scale.

[0010] Preferably, the upper end of the adjusting rod is fixedly connected with a plurality of anti-slip protrusions, and the plurality of anti-slip protrusions are evenly distributed on the adjusting rod.

[0011] The effect achieved by the above components is that the anti-slip protrusions significantly increase the friction between the user's fingers and the upper contact surface of the adjustment rod, making it easier for the user to rotate the adjustment rod.

[0012] Preferably, both the upper and lower ends of the baffle are chamfered.

[0013] The effect achieved by the above components is that the chamfered design at the upper and lower ends of the baffle effectively reduces the frictional resistance when the baffle slides up and down inside the round tube, making the movement of the baffle smoother.

[0014] Preferably, a protective tube is fixedly connected to the upper surface of the handle, and the end of the protective tube away from the handle is fixedly connected to the operating tube. The protective tube is specifically a plastic corrugated tube.

[0015] The effect achieved by the above components is that the protective tube made of plastic corrugated pipe completely covers the spring, preventing the spring from jamming, rusting or failing, and extending its service life.

[0016] Preferably, both the control tube and the handle are fixedly connected with anti-slip sleeves, which are rubber sleeves.

[0017] The effect achieved by the above components is that the rubber anti-slip sleeves on the control tube and handle greatly increase the friction when the user holds the handle, thereby improving the safety and stability of operation.

[0018] Preferably, the arc surface of the support tube is threaded with an auxiliary tube, which is located at the lower end of the support tube, and the lower end of the auxiliary tube has several anti-slip grooves.

[0019] The effect achieved by the above components is that by rotating the auxiliary tube, the length of the auxiliary tube away from the support tube can be adjusted, thereby changing the overall length of the fertilizer applicator pole.

[0020] In summary, the beneficial effects of this utility model are as follows:

[0021] In this invention, by setting an adjustment structure, rotating the adjustment rod can drive the rectangular block and the circular tube fixed thereto to slide up and down inside the support tube, so that the discharge holes of different diameters on the circular tube are precisely aligned with the outlet of the connecting tube, thereby realizing convenient adjustment of the fertilizer outflow hole size to meet the needs of different fertilizer amounts. During operation, hold the control tube and pull the handle to drive the slide rod and baffle to move up, opening the channel of the connecting tube and the discharge hole. Under the action of gravity, the fertilizer flows through the fertilizer box, telescopic tube, connecting tube, and discharge hole in sequence, and is finally discharged from the lower end of the support tube. With the baffle mechanism with spring return, the start and stop of fertilization can be precisely controlled by simple handle operation. The overall operation significantly improves the accuracy, efficiency, adaptability and ease of operation of fertilization. Attached Figure Description

[0022] Appendix Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0023] Appendix Figure 2 This is a schematic diagram of the disassembled structure of the support tube of this utility model;

[0024] Appendix Figure 3 This is a schematic diagram of the circular tube structure of this utility model;

[0025] Appendix Figure 4 This is a schematic diagram of the structure of the control tube of this utility model;

[0026] Appendix Figure 5 This is a schematic diagram of the disassembly structure of the control tube of this utility model;

[0027] Appendix Figure 6 This is a partial structural diagram of the adjustment structure of this utility model.

[0028] The following are the labels in the attached diagram: 1. Fertilizer bin; 2. Telescopic tube; 3. Adjustment structure; 301. Connecting tube; 302. Support tube; 303. Adjustment frame; 304. Adjustment rod; 305. Rectangular block; 306. Round tube; 307. Discharge hole; 308. Scale line; 309. Control tube; 310. Slide rod; 311. Baffle; 312. Handle; 313. Spring; 314. Protective tube; 315. Anti-slip sleeve; 316. Auxiliary tube. Detailed Implementation

[0029] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0030] Reference Figure 1 As shown, this utility model provides a technical solution: a handheld fertilizer applicator with adjustable aperture, including a fertilizer box 1, a telescopic tube 2 fixedly connected to the lower surface of the fertilizer box 1, and an adjustment structure 3 provided at the end of the telescopic tube 2 away from the fertilizer box 1.

[0031] The specific settings and functions of its adjustment structure 3 will be explained in detail below.

[0032] Reference Figures 2 to 6As shown in this embodiment: the adjusting structure 3 includes a connecting pipe 301, which is fixedly connected to the telescopic pipe 2. A support pipe 302 is fixedly connected to the end of the connecting pipe 301 away from the telescopic pipe 2. An adjusting frame 303 is fixedly connected to the outer arc surface of the support pipe 302. An adjusting rod 304 is rotatably connected to the inner wall of the adjusting frame 303. A rectangular block 305 is threadedly connected to the arc surface of the adjusting rod 304. The rectangular block 305 is slidably connected to the inner wall of the adjusting frame 303. A round pipe 306 is fixedly connected to the side of the rectangular block 305 closest to the support pipe 302. The round pipe 306 is slidably connected to the inner wall of the support pipe 302. Several discharge holes 307 are opened on the surface of the round pipe 306 at positions corresponding to the connecting pipe 301. The holes of the several discharge holes 307... The diameter increases sequentially from top to bottom. An operating tube 309 is fixedly connected to the upper end of the support tube 302. A slide rod 310 is slidably connected to the upper end of the support tube 302. A baffle 311 is fixedly connected to the lower end of the slide rod 310. The baffle 311 is located at the lower end of the connecting tube 301 and is slidably connected to the inner wall of the circular tube 306. A handle 312 is fixedly connected to the upper end of the slide rod 310. The surface of the handle 312 is slidably connected to the operating tube 309. A spring 313 is fixedly connected to the upper surface of the handle 312. The end of the spring 313 away from the handle 312 is fixedly connected to the operating tube 309. By precisely aligning the discharge holes 307 of different diameters on the circular tube 306 with the outlet of the connecting tube 301, the size of the fertilizer discharge hole can be easily adjusted. To meet the needs of different fertilizer application rates, the start and stop of fertilizer application is controlled by a baffle 311. Several scale lines 308 are provided on one side of the adjusting frame 303 corresponding to the position of the feeding hole 307. These scale lines 308 provide intuitive visual indicators, allowing users to easily and accurately determine the position of the corresponding feeding hole 307. Several anti-slip protrusions are fixedly connected to the upper end of the adjusting rod 304. These protrusions are evenly distributed on the adjusting rod 304, significantly increasing the friction between the user's fingers and the upper contact surface of the adjusting rod 304, facilitating the user's rotation of the adjusting rod 304. Both the upper and lower ends of the baffle 311 are chamfered. The chamfered design of the upper and lower ends of the baffle 311 effectively reduces the sliding motion of the baffle 311 within the circular tube 306. The frictional resistance during movement makes the movement of the baffle 311 smoother. A protective tube 314 is fixedly connected to the upper surface of the handle 312. The end of the protective tube 314 away from the handle 312 is fixedly connected to the operating tube 309. The protective tube 314 is specifically a plastic corrugated tube. The protective tube 314, which is made of plastic corrugated tube, completely covers the spring 313, preventing the spring 313 from jamming, rusting, or failing, and extending its service life. Anti-slip sleeves 315 are fixedly connected to the surfaces of the operating tube 309 and the handle 312. The anti-slip sleeves 315 are rubber sleeves. The rubber anti-slip sleeves 315 on the operating tube 309 and the handle 312 greatly increase the friction when the user holds the handle, improving the safety and stability of operation. An auxiliary tube 316 is threadedly connected to the arc surface of the support tube 302.The auxiliary tube 316 is located at the lower end of the support tube 302. Several anti-slip grooves are formed at the lower end of the auxiliary tube 316. Rotating the auxiliary tube 316 adjusts its distance from the support tube 302, thereby changing the overall length of the fertilization pole.

[0033] Detailed Instructions for Use: By setting the adjustment structure 3, first rotate the adjustment rod 304. The adjustment rod 304, through its thread, drives the rectangular block 305 to move upward along the inner wall of the adjustment frame 303. During this process, the rectangular block 305 drives the round tube 306 to move upward along the inner wall of the support tube 302, causing the positions of the feed holes 307 of different diameters on the round tube 306 and the connecting tube 301 to change. According to actual needs, adjust the feed hole 307 of the appropriate diameter to align with the connecting tube 301, and simultaneously hold the operating lever by hand. The upper end of the longitudinal tube 309 and the handle 312 cause the handle 312 to move upward along the inner wall of the operating tube 309. During this process, the handle 312 drives the slide rod 310 and the baffle 311 to move, and the spring 313 is in a compressed state. When the baffle 311 moves upward away from the connecting tube 301 and the corresponding discharge hole 307, the baffle 311 no longer blocks the fertilizer in the connecting tube 301. The fertilizer enters the support tube 302 through the fertilizer box 1, the telescopic tube 2 and the connecting tube 301, and then exits from the tube wall of the support tube 302 and the discharge hole. 307 enters the round tube 306 and then falls through the inner wall of the round tube 306 and the support tube 302. The scale line 308 provides intuitive visual indication, allowing the user to easily and accurately determine the position of the corresponding feed hole 307 according to the scale. The anti-slip protrusions significantly increase the friction between the user's fingers and the upper contact surface of the adjusting rod 304, making it easier for the user to rotate the adjusting rod 304. The chamfered design at the upper and lower ends of the baffle 311 effectively reduces the frictional resistance when the baffle 311 slides up and down in the round tube 306, making the movement of the baffle 311 smoother. The protective tube 314, made of plastic corrugated pipe, completely covers the spring 313, preventing the spring 313 from jamming, rusting, or failing, and extending its service life. The rubber anti-slip sleeve 315 on the operating tube 309 and the handle 312 greatly increases the friction when the user holds the handle, improving the safety and stability of operation. Rotating the auxiliary tube 316 can adjust the length of the auxiliary tube 316 away from the support tube 302, thereby changing the overall length of the fertilizer applicator.

Claims

1. A handheld fertilizer applicator with adjustable aperture, comprising a fertilizer box (1), characterized in that: A telescopic tube (2) is fixedly connected to the lower surface of the fertilizer box (1). An adjustment structure (3) is provided at the end of the telescopic tube (2) away from the fertilizer box (1). The adjustment structure (3) includes a connecting tube (301). The connecting tube (301) is fixedly connected to the telescopic tube (2). A support tube (302) is fixedly connected to the end of the connecting tube (301) away from the telescopic tube (2). An adjustment frame (303) is fixedly connected to the outer arc surface of the support tube (302). An adjustment rod (304) is rotatably connected to the inner wall of the adjustment frame (303). A rectangular block (305) is threadedly connected to the arc surface of the adjustment rod (304). The rectangular block (305) is slidably connected to the inner wall of the adjustment frame (303). A round tube (306) is fixedly connected to the side of the rectangular block (305) near the support tube (302). The round tube (306) is slidably connected to the inner wall of the support tube (302). The surface of the round tube (306) has several feeding holes (307) at positions corresponding to the connecting tube (301). The diameter of the feeding holes (307) increases sequentially from top to bottom. The upper end of the support tube (302) is fixedly connected to the operating tube (309), and the upper end of the support tube (302) is slidably connected to the slide rod (310). The lower end of the slide rod (310) is fixedly connected to the baffle (311). The baffle (311) is positioned... At the lower end of the connecting pipe (301), the baffle (311) is slidably connected to the inner wall of the round pipe (306), the upper end of the slide rod (310) is fixedly connected to the handle (312), the surface of the handle (312) is slidably connected to the operating pipe (309), the upper surface of the handle (312) is fixedly connected to the spring (313), and the end of the spring (313) away from the handle (312) is fixedly connected to the operating pipe (309).

2. The handheld adjustable-aperture fertilizer applicator according to claim 1, characterized in that: The adjustment frame (303) has several scale lines (308) on one side corresponding to the position of the feeding hole (307).

3. The handheld adjustable-aperture fertilizer applicator according to claim 1, characterized in that: The upper end of the adjusting rod (304) is fixedly connected with several anti-slip protrusions, which are evenly distributed on the adjusting rod (304).

4. The handheld adjustable-aperture fertilizer applicator according to claim 1, characterized in that: The upper and lower ends of the baffle (311) are both chamfered.

5. The handheld adjustable-aperture fertilizer applicator according to claim 1, characterized in that: A protective tube (314) is fixedly connected to the upper surface of the handle (312). The end of the protective tube (314) away from the handle (312) is fixedly connected to the operating tube (309). The protective tube (314) is specifically a plastic corrugated tube.

6. The handheld adjustable-aperture fertilizer applicator according to claim 1, characterized in that: The surfaces of the control tube (309) and the handle (312) are both fixedly connected with anti-slip sleeves (315), which are rubber sleeves.

7. The handheld adjustable-aperture fertilizer applicator according to claim 1, characterized in that: The arc surface of the support tube (302) is threaded with an auxiliary tube (316). The auxiliary tube (316) is located at the lower end of the support tube (302), and the lower end of the auxiliary tube (316) has several anti-slip patterns.

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