Root water injection device for sweet potato planting

Abstract

The invention discloses a root water injection device for sweet potato planting, and belongs to the field of agricultural machinery. The device aims to solve the problems that in traditional sweet potato planting, labor intensity is high, efficiency is low, cost is high, and existing equipment is single in function and cannot achieve instant water injection of roots during sweet potato seedling planting. By integrating the transmission part, the water injection part and the water supply part, coherent operation of seedling insertion, root water injection and seedling clamping pipe washing is achieved. The transmission part drives the plunger push rod to complete water suction-water injection actions, the water supply part continuously supplies water through a one-way valve, the lower portion of a seedling clamping pipe of the water injection part is provided with a water outlet groove and a water outlet hole, water can be accurately injected to seedling roots, and the seedling clamping pipe can be flushed to prevent soil adhesion. The water injection rate can be flexibly adjusted through the stroke adjusting screw, and the survival rate of sweet potato seedlings, the water resource utilization efficiency and the planting operation efficiency are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery, specifically to a root watering device for sweet potato planting that can simultaneously perform seedling insertion, root watering, and rinsing of the seedling tube. Background Technology

[0002] As an important food and cash crop, the root irrigation process is crucial for sweet potatoes. Traditional sweet potato cultivation relies heavily on manual labor. During the seedling stage, multiple people are needed to work together: one to water, one to plant, and one to cover with soil. This is extremely labor-intensive and inefficient. In recent years, labor costs have continued to rise. According to statistics, the average daily wage of agricultural workers in 2024 increased by more than 40% compared to five years ago. This has led to a sharp increase in the cost of traditional manual cultivation methods and a significant decline in economic benefits. While some agricultural planting machinery exists on the market, specialized equipment for root watering during sweet potato seedling transplanting is extremely scarce, despite the general trend towards agricultural mechanization. The few existing sweet potato seedling transplanting machines can only perform the simple transplanting action, lacking root watering capabilities and failing to meet the immediate water needs of sweet potato seedlings, leading to lower survival rates. Equipment capable of completing root watering during transplanting in one operation is even rarer, making it difficult to meet the demands of modern agriculture for efficient and precise planting. Summary of the Invention

[0003] This invention aims to provide a root watering device for sweet potato planting. Through innovative design, this device achieves precise water injection to the seedling roots, effectively improving the survival rate of sweet potato seedlings. The water injection volume can be flexibly adjusted according to soil moisture and the needs of different sweet potato seedling varieties, greatly improving water resource utilization efficiency. The lower part of the seedling clamping tube in the device is equipped with a water outlet groove and water outlet hole. During water injection, it not only replenishes water to the seedling roots but also rinses the surface of the clamping tube, preventing soil adhesion and ensuring stable and reliable seedling clamping action. Furthermore, this device integrates the three key steps of seedling insertion, root watering, and clamping tube rinsing into a single, continuous operation, significantly improving planting efficiency. The technical solution of this invention specifically includes the following main parts: The transmission unit provides power to the water injection unit, driving the plunger push rod to complete the water intake and injection action; the water supply unit controls the continuous water supply to the water injection unit through a one-way valve; the three work together to achieve a continuous operation of 'inserting the seedling clamp tube into the soil → watering the roots → rinsing the rod body → resetting'. The transmission unit consists of a cam 1, a spring 2, a spring groove 3, a stroke adjusting screw 4, and a spring push rod 5. The spring push rod 5 is securely connected to the plunger push rod 7 via a connecting rod 6, achieving efficient power transmission. During rotation, the cam 1 drives the spring push rod 5 to reciprocate linearly within the spring groove 3. The spring 2 provides the spring force required for the spring push rod 5 to return to its original position. The stroke adjusting screw 4 precisely limits the travel of the spring push rod 5, ensuring the stability and controllability of the entire transmission process. The water injection section includes a plunger rod 7, a cylinder 8, a one-way valve A10, a hose B11, a seedling clamping component 13, and a seedling clamping tube 12. The plunger rod 7 is linked to the spring push rod 5, reciprocating within the cylinder 8. The cylinder 8 is connected to the one-way valve A10 via a hose A9. The one-way valve A10 is then connected to the water outlet groove 12.1 and water outlet hole 12.2 of the seedling clamping tube via hose B11 and the seedling clamping component 13. During water injection, the water jet from the lower water outlet hole of the seedling clamping tube 12 precisely targets the seedling roots, providing ample moisture. Simultaneously, the water flow's scouring action on the surface of the seedling clamping tube effectively prevents soil adhesion, maintaining the normal operation of the seedling clamping mechanism. Water supply unit: Consists of water tank 16, hose C15, and one-way valve B14. Water tank 16 is connected to cylinder 8 via hose C15 and one-way valve B14, ensuring that water can flow into cylinder 8 in a unidirectional and stable manner, providing a continuous water supply for water injection operations. Attached Figure Description

[0004] Figure 1 is a schematic diagram of the structure of a root watering device for sweet potato planting according to the present invention; Explanation of reference numerals in the attached diagram: 1 Cam; 2 Spring; 3 Spring groove; 4 Stroke adjusting screw; 5 Spring push rod; 6 Connecting rod; 7 Plunger push rod; 8 Cylinder block; 9 Hose A; 10 One-way valve A; 11 Hose B; 12 Seedling clamping tube; 12.1 Water outlet groove; 12.2 Water outlet hole; 13 Seedling clamping component; 14 One-way valve B; 15 Hose C; 16 Water tank. Detailed Implementation

[0005] The specific embodiments of the present invention are described in detail below with reference to Figure 1 in the specification: Transmission mechanism: Cam 1 is mounted on the power output shaft of the equipment. When the power source drives cam 1 to rotate, the eccentric profile of cam 1 pushes spring push rod 5 forward within spring groove 3, compressing spring 2. During this process, spring push rod 5 drives plunger push rod 7 to move forward synchronously via connecting rod 6. When the rotation of cam 1 causes the push rod to move out of its pushing range, spring 2 releases its stored elastic potential energy, pushing spring push rod 5 and plunger push rod 7 to return to their original positions in the opposite direction, completing a full motion cycle. Stroke adjustment screw 4 is installed at the end of spring groove 3. By adjusting its extension length, the stroke of spring push rod 5 can be changed, thereby adjusting the movement distance of plunger push rod 7 within cylinder 8, thus controlling the water injection volume. The water injection process is as follows: When the seedling clamping tube 12 is inserted into the soil and reaches the preset depth, the transmission unit drives the plunger push rod 7 to enter the water injection position. At this time, the water injection operation is started, and water is sprayed out from the water outlet 12.1 and the water outlet 12.2 to complete the root watering. Then, the seedling clamping component 13 releases the sweet potato seedling, and the device resets to complete the planting. When the plunger push rod 7 returns, a negative pressure is formed in the cylinder 8. The one-way valve A10 closes to prevent water backflow, and the one-way valve B14 opens. Under atmospheric pressure, the water in the water tank 16 enters the cylinder 8 through the hose C15 and the one-way valve B14 to replenish the water in the cylinder 8 and prepare for the next water injection. Operating principle of the water supply unit: Water tank 16 is fixedly installed on the equipment frame and stores sufficient water. The outlet of water tank 16 is connected to the inlet of one-way valve B14 via hose C15, and the outlet of one-way valve B14 is connected to the inlet of cylinder 8. During equipment operation, when negative pressure occurs in cylinder 8, one-way valve B14 opens, and water from water tank 16 flows into cylinder 8; when cylinder 8 is full, one-way valve B14 closes to prevent backflow and ensure that water always flows unidirectionally from water tank 16 to cylinder 8, providing a continuous water source for the stable operation of the water supply unit. The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A root watering device for sweet potato cultivation, characterized in that, The transmission part, the water injection part and the water supply part are included. The transmission part includes a cam 1, a spring 2, a spring groove 3, a stroke adjusting screw 4 and a spring push rod 5, the spring push rod 5 is connected with a plunger push rod 7 of the water injection part through a connecting rod 6. The water injection part includes the plunger push rod 7, a cylinder 8, a one-way valve A10, a hose B11, a seedling clamping component 13 and a seedling clamping pipe 12, the seedling clamping pipe 12 is provided with a water outlet groove 12.1 and a water outlet hole 12.2 at the lower part, the cylinder 8 is communicated with the seedling clamping pipe 12 through a hose A9, the one-way valve A10 and a hose B11. The water supply part includes a water tank 16, a hose C15 and a one-way valve B14, the water tank 16 is communicated with the cylinder 8 through the hose C15 and the one-way valve B14. The transmission part drives the plunger push rod 7 to reciprocate in the cylinder 8, cooperates with the opening and closing of the one-way valve A10 and the one-way valve B14, realizes the root water injection and self-cleaning of the seedling clamping pipe 12, and completes the integrated operation of the seedling insertion, water injection and flushing.

2. The apparatus of claim 1, wherein, The stroke adjusting screw 4 is installed at the end of the spring groove 3, the stroke of the spring push rod 5 can be changed by adjusting the extension length of the stroke adjusting screw 4, then the displacement amount of the plunger push rod 7 in the cylinder 8 is controlled, and the water injection amount is adjusted.

3. The apparatus of claim 1, wherein, The water outlet groove 12.1 of the seedling clamping pipe 12 is communicated with the water outlet hole 12.2, the water flow is sprayed through the water outlet groove 12.1 and the water outlet hole 12.2 at the same time, and the surface of the seedling clamping pipe 12 is flushed at the same time.

4. The apparatus of claim 1, wherein, The cam 1 is installed on the power output shaft of the equipment, drives the spring push rod 5 to do reciprocating linear motion through rotation, and the spring 2 provides the reset elastic force for the spring push rod 5.

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