Lower joint of point application fertilizer feeding pipe of agricultural fertilizer applicator

Abstract

The utility model relates to a point application fertilizer delivery pipe lower joint of an agricultural fertilizer applicator, which is provided with a holding pipe, a blanking pipe and a point application head, the blanking pipe is a rigid pipe, the upper end of the blanking pipe is connected with a fertilizer delivery hose through a pipe connecting piece, the fertilizer delivery pipe and the blanking pipe are coaxial at the joint, and the other end of the fertilizer delivery pipe is communicated with a back box to enable fertilizer to automatically flow into the blanking pipe. The lower end of the blanking pipe is connected with the point applying head, the upper section of the holding pipe is a straight pipe parallel to the blanking pipe, the lower section of the holding pipe is an arc-shaped pipe or an angle pipe and is connected with the blanking pipe, and a radian or an angle is formed at the connecting part; the upper end of the holding pipe is provided with a handle for holding; the point applying head consists of a base pipe, a sliding sleeve, a spring and a lower end cover, and the upper end of the base pipe is connected with the blanking pipe through a point applying head connecting piece; a discharging port is arranged on the wall of the base tube, the sliding sleeve is sleeved on the base tube to slide, the spring is abutted between the base tube and the lower end cover, the lower end cover and the sliding sleeve are connected into a whole through threads, and a discharging port corresponding to the discharging port is arranged on the sliding sleeve. The granular fertilizer applicator is simple in structure, reasonable in construction, smooth in granular fertilizer application, and high in fertilizer application efficiency and quality.

Description

Technical Field

[0001] The utility model relates to an agricultural production tool, in particular to a lower joint of a fertilizer delivery pipe of an agricultural fertilizer applicator. Background Art

[0002] Farmers used to spread granular fertilizers such as urea, ammonium nitrate, and potassium dihydrogen phosphate by hand, sprinkling them handful by handful. This was inaccurate, physically demanding, and inefficient. Later, a spot-applying fertilizer applicator emerged. This involves holding a feed pipe in one hand while carrying a fertilizer box on one's back. A fertilizer delivery pipe connects the feed pipe to a dispensing head. To apply fertilizer, the applicator presses the dispensing head firmly against the plant's roots. The fertilizer automatically flows out. Release the handle, and the spring forces the dispensing head back down, closing the dispensing port. The same process is repeated for the next plant, covering the entire plot of land with fertilizer. While this tool avoids the inaccurate and unsafe hand-spreading, it suffers from a structural issue: the connection between the feed pipe and the feed pipe is not coaxial, but rather at a 45-degree angle. This makes it easy for granular fertilizer to clog at the connection, requiring frequent tapping and shaking of the feed pipe to clear the clog. Fertilizer can not flow smoothly in the feeding pipe, will cause some crops to be fertilized in vain, affecting the efficiency and quality of fertilization. Therefore, it is necessary to improve this fertilizer applicator. Summary of the Invention

[0003] To this end, the utility model proposes a lower joint for a point-feeding fertilizer pipe of an agricultural fertilizer spreader. The lower joint allows the fertilizer delivery hose to enter in a coaxial manner with the feed pipe, overcoming the problem of blockage in the pipe. At the same time, it makes connection and disassembly convenient and quick, and the operation is simple, thereby improving the efficiency and quality of fertilization.

[0004] The utility model proposes a lower joint of a point-feeding fertilizer pipe of an agricultural fertilizer spreader, which comprises a holding pipe, a feeding pipe and a point-feeding head. The characteristic of the feeding pipe is that the feeding pipe is a rigid pipe, the upper end of which is connected to a fertilizer feeding hose through a pipe connector, the fertilizer feeding pipe and the feeding pipe are coaxial at the connection point, the other end of the fertilizer feeding pipe is connected to a back box to allow fertilizer to automatically flow into the feeding pipe, the lower end of the feeding pipe is connected to the point-feeding head, the upper section of the holding pipe is a straight pipe parallel to the feeding pipe, the lower section is an arc-shaped pipe or an angled pipe and is connected to the feeding pipe, the connection point has an arc or an angle, and the upper end of the holding pipe is provided with a handle for holding.

[0005] The point application head is composed of a base tube, a sliding sleeve, a spring and a lower end cover. The upper end of the base tube is connected to the discharge pipe through a point application head connector. There is a discharge port on the wall of the base tube. The sliding sleeve is sleeved on the base tube and slides. The spring is pressed between the base tube and the lower end cover. The lower end cover and the sliding sleeve are connected as a whole through threads. There is a discharge port on the sliding sleeve corresponding to the discharge port.

[0006] There is a lower stop tooth on the inner wall of the sliding sleeve. Under the action of the spring, the lower stop tooth presses against the upper edge of the discharge port of the base pipe to prevent slipping and seal the discharge port. There is also an upper stop tooth on the sliding sleeve. When the spring is contracted, it presses against the lower edge of the discharge port to align the discharge port with the discharge port for discharge.

[0007] The base pipe discharge port has an inclined bottom surface to facilitate the smooth outflow of fertilizer.

[0008] The surface of the supporting spring below the inclined bottom surface of the discharge port is a plane perpendicular to the pipe wall.

[0009] The holding pipe can be connected to the feeding pipe through an elbow joint.

[0010] The distance between the pipe section parallel to the feeding pipe and the feeding pipe is 1-3cm.

[0011] The handle at the top of the tube has finger grooves for easy grip.

[0012] The parts of the feeding pipe, the holding pipe, the handle and the point-applying head except the spring are all made of plastic.

[0013] The utility model is used as follows:

[0014] Granular fertilizer, such as urea, is pre-loaded into a backpack. The person applying fertilizer puts the backpack on their back, holding the handle in one hand, which holds the feed pipe and the applicator together. They point the applicator at the soil near the roots of the crop to be fertilized, and press down firmly. The spring compresses, causing the sliding sleeve of the applicator to move upward, aligning the discharge port with the discharge opening, and the granular fertilizer automatically flows out. When the handle is released, the spring returns the sliding sleeve to its original position, sealing the discharge opening and trapping the fertilizer in the base pipe. Repeating the same process for the next plant allows for the same fertilization.

[0015] By controlling the length of time the spring is pressed down, you can accurately determine the amount of fertilizer to apply to the plant.

[0016] The utility model has a simple structure and a reasonable construction, and the granular fertilizer can be applied smoothly without clogging, which is beneficial to improving the efficiency and quality of fertilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the present invention (partially omitted).

[0018] Figure 2 It is a structural diagram of an existing fertilizer applicator (partially omitted).

[0019] Figure 3 yes Figure 1 The schematic diagram of the structure when the dot applicator is closed is shown.

[0020] Figure 4 yes Figure 1The schematic diagram of the structure when the point applicator is released is shown.

[0021] Figure 1-4 The parts are numbered as follows:

[0022] 1-back box; 2-shoulder strap; 3-fertilizer feeding hose; 4-pipe connector; 5-feeding pipe; 6-point applicator connector; 7-point applicator; 8-handle; 9-handle; 10-oblique feeding pipe; 11-granular fertilizer; 701-base pipe; 702-sliding sleeve; 703-lower stop tooth; 704-discharge port; 705-upper stop tooth; 706-discharge port; 707-lower end cover; 708-connecting thread; 709-spring; 7010-oblique bottom surface of discharge port. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figure 1-4 As shown, the present invention is directed to Figure 2 The shortcomings of the existing point fertilizer spreader shown are improved. The feed pipe 5 and the handle pipe 8 of the existing fertilizer spreader are the same pipe, which is obliquely connected to the feed pipe 10 and then connected to the fertilizer delivery pipe 3, which often causes the feed to be blocked at the connection. The utility model makes the handle pipe into a straight pipe section and an arc-shaped pipe section, allowing the arc-shaped pipe section to be connected to the feed pipe. The straight pipe section and the feed pipe are kept parallel to each other to facilitate the use of force. The handle 9 is installed at the upper end of the straight pipe section, and the handle has a finger groove for easy grip. The upper end of the straight pipe is connected to the fertilizer delivery hose 3 through a pipe connector 4, and the upper end of the fertilizer delivery hose is also connected to the back box 1 through the same pipe connector. In this way, when the fertilizer enters the feed pipe, it will enter from the pipe mouth instead of the pipe wall, avoiding the problem of blockage when the fertilizer flows down.

[0025] The point application head 7 is basically the same as the existing structure. Its working principle is as follows Figure 3 and 4 shown.

[0026] Granular fertilizer flows from the back box through the fertilizer delivery hose and discharge pipe into the base tube 701 of the spot applicator 7. When it reaches the discharge port 704, it is blocked and awaits discharge. As the handle 9 is pressed down, the spring 709 is compressed, and the lower end cover 707 slides upward together with the sliding sleeve 702 until the discharge port 706 is aligned with the discharge port 704. It is then blocked by the upper stop teeth 705, and the fertilizer is automatically discharged from the discharge port and flows onto the soil at the roots of the plant where it needs to be applied. When the handle is released, the spring causes the sliding sleeve to slide back down and be restrained by the lower stop teeth 703. The discharge port is blocked, and the fertilizer cannot flow out. When the spot applicator moves to the root of the next plant, the same action is repeated to apply the same amount of fertilizer to the roots of the plant.

[0027] The remaining parts and reference numerals not mentioned are as described above.

Claims

1. A lower joint of a fertilizer delivery pipe for an agricultural fertilizer applicator, comprising a holding pipe, a feeding pipe and a point application head, characterized in that The discharge pipe is a rigid pipe, the upper end of which is connected to the fertilizer delivery hose through a pipe connector. The fertilizer delivery pipe and the discharge pipe are coaxial at the connection point. The other end of the fertilizer delivery pipe is connected to the back box to allow the fertilizer to automatically flow into the discharge pipe. The lower end of the discharge pipe is connected to the point application head. The upper section of the holding pipe is a straight pipe parallel to the discharge pipe, and the lower section is an arc-shaped pipe or an angle pipe and is connected to the discharge pipe. There is an arc or angle at the connection point. There is a handle at the upper end of the holding pipe for holding. The point application head is composed of a base pipe, a sliding sleeve, a spring and a lower end cover. The upper end of the base pipe is connected to the discharge pipe through a point application head connector. There is a discharge port on the wall of the base pipe. The sliding sleeve is mounted on the base pipe and slides. The spring is against the base pipe and the lower end cover. The lower end cover and the sliding sleeve are connected as a whole through threads. There is a discharge port on the sliding sleeve corresponding to the discharge port.

2. The lower joint of the fertilizer delivery pipe of the agricultural fertilizer applicator according to claim 1 is characterized in that There is a lower stop tooth on the inner wall of the sliding sleeve. Under the action of the spring, the lower stop tooth presses against the upper edge of the discharge port of the base pipe to prevent slipping and seal the discharge port. There is also an upper stop tooth on the sliding sleeve. When the spring is contracted, it presses against the lower edge of the discharge port to align the discharge port with the discharge port for discharge.

3. The lower connector of the fertilizer delivery pipe of the agricultural fertilizer applicator according to claim 1 is characterized in that The base pipe discharge port has an inclined bottom surface to facilitate the smooth outflow of fertilizer.

4. The lower connector of the agricultural fertilizer applicator point fertilizer delivery pipe according to claim 3 is characterized in that The surface of the supporting spring below the inclined bottom surface of the discharge port is a plane perpendicular to the pipe wall.

5. The lower connector of the fertilizer delivery pipe of the agricultural fertilizer applicator according to claim 1 is characterized in that The holding pipe is connected to the discharge pipe through an elbow joint.

6. The lower connector of the fertilizer delivery pipe of the agricultural fertilizer applicator according to claim 1 is characterized in that The distance between the pipe section parallel to the feeding pipe and the feeding pipe is 1-3cm.

7. The lower connector of the fertilizer delivery pipe of the agricultural fertilizer applicator according to claim 1 is characterized in that The handle at the top of the tube has finger grooves for easy grip.

8. The lower connector of the fertilizer delivery pipe for agricultural fertilizer applicator according to any one of claims 1 to 7, characterized in that The parts of the feeding pipe, the holding pipe, the handle and the point-applying head except the spring are all made of plastic.

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