With the increasing investment subsidies for agricultural machinery by the government, modern plant protection machinery is entering the hands of farmers. The emergence of crop protection machinery has solved the shortage of labor, improved production efficiency and precision of agricultural machinery. Plant protection is an important component of agricultural and forestry production. It is one of the important measures to ensure high yields and abundant harvests in agriculture and forestry. According to the development of existing plant protection machinery, our company has developed a plant protection machinery suitable for field crops -3WP-1200 spray bar spray.

The 3WP-1200 spray bar spray is a tractor powered spray equipped with spray bars or suspenders (vertical spray bars). It is an ideal field crop protection machinery with convenient mobility, wide spraying width, uniform spraying, and high efficiency, playing a huge role in the vast agricultural areas of China. Suitable for field spraying of large areas of low growing crops. The spray bar spray is equipped with a spray bar hydraulic automatic lifting and folding system, a spray bar balance system, a spray bar protection device, an accurate dispensing device, a tank bottle cleaning device, a venturi mixing system, a spray pressure stabilizing system, a sectional control system, a multistage filtering system and a drip prevention device. The spray bar spray can realize one button operation, and the spray bar can rise and fall steadily, expand and fold in turn, and swing freely around the center of gravity, which breaks through the technical problems of large spray bar spray, such as large terrain impact, unstable work, difficult control and folding of spray bar, etc; The end protection device of the spray bar effectively protects the spray bar and objects that are difficult to observe at the far end; The independent dispensing and dosing system ensures the accuracy of drug concentration; The Venturi stirring system ensures the uniformity of the medicinal solution; Tank and bottle cleaning systems, as well as anti drip devices for drug solutions, control the pollution of drug residues to the environment; The stable voltage, segmented control, and multi-stage filtration system ensure the rationality and uniformity of spraying, and guarantee the quality of spraying.

Liquid medicine box:Used to hold the sprayed medicine, it is equipped with a jet mixer and a cleaning nozzle. The capacity of the medicine box is 1200L

Clear water tank:It is used for cleaning the medicine tank and spray system to keep the system clean and prevent environmental pollution. In addition, the antifreeze can also be added into the spray system through the clear water tank.

Liquid pump:The liquid pump used by our company is a diaphragm pump, which is the power source of the spray system. The medium is pressurized by the diaphragm pump to conduct spray, mixing and cleaning. In addition, water and medication can also be added through this pump.

Spray bar:The spray bar is suspended on the frame through a lifting frame, consisting of nine sections, used to fix the nozzle body. Four sections on each side, when transporting or turning on the ground, they are folded back and fixed to the rack; During spray operation, after stretching, lift to a proper height for work.

Spray control system:The spray control system is mainly composed of ball valve, pressure regulating valve, distributor, filter, agitator, nozzle, pressure gauge, PVC pipe, rubber pipe, etc. It is mainly used to control spray volume, spray pressure, water addition, dosing, mixing, cleaning, etc. For specific operations, please refer to the adjustments before and during the homework process.

Hydraulic control system:The hydraulic control system mainly consists of flow control valves, travel switches, oil cylinders, hydraulic locks, pressure regulating valves, hydraulic hoses, etc. It is mainly used to control the balance, lifting, folding, extension, and locking of the spray bar. For specific operations, please refer to the basic adjustment before the assignment.

Nozzle:The spray angle of this nozzle is a 110 degree fan-shaped shape, mainly used for water washing spraying, disinfection spraying, and cooling. This nozzle has an independent switch that can individually control the closure of a single nozzle.

Technological innovation points:

1. Energy conservation and environmental protection

3WP-1200 spray bar spray is equipped with an independent dosing box, with accurate proportioning and uniform concentration; Independent cleaning device for medicine bottles and cans, which can be injected into the cans after cleaning to improve drug utilization and control environmental pollution; Independent Venturi stirring system ensures uniform concentration, improves drug utilization efficiency, and reduces the occurrence of drug harm; Equipped with anti drip devices to prevent dripping and reduce drug harm and environmental pollution.

2. Controllability

The 3WP-1200 spray bar spray adopts hydraulic technology to control the spray bar, which is easy to operate, safe and stable. The spray bar lifting adopts the company's patented technology (combination of hydraulic cylinder and tension spring), with one click operation, ensuring smooth lifting and lowering; The folding of the spray bar adopts the company's proprietary hydraulic control technology, which enables the spray bar to be unfolded in an orderly manner from inside to outside, and when retracted, it is retracted from outside to inside, making the entire spray bar balanced, stable, with a high safety factor and easy operation.

3. Boom folding control technology for boom spray

At present, there is no spray bar folding control system on the market for spray bar folding. Due to the long spray bar, it is inconvenient to place and turn it. So, based on the defects of similar products, we developed spray bar folding control technology. It comprises a triangular plate and a hydraulic cylinder, wherein the triangular plate comprises a fixed vertex, an active vertex, and a passive vertex. The triangular plate is hinged to the folded spray rod at the fixed vertex, hinged to the output end of the hydraulic cylinder at the active vertex, and hinged to the folded spray rod at the passive vertex. The hydraulic cylinder of the hydraulic cylinder is hinged to the folded spray rod. A connecting rod is arranged between the passive vertex and the folding spray bar, one end of the connecting rod is hinged on the passive vertex, and the other end is hinged on the folding spray bar of the spray bar spray through the hinge shaft. The connecting rod is curved, and when the folding spray bar is folded, the bending point of the connecting rod is located in front of the line connecting its two end points. The hinge shaft is installed on the folding spray bar. On the opposite side of the hinge shaft of the spray bar, when folding the spray bar, the hinge shaft is always located on the inner side of the line connecting the active vertex and the passive vertex, and on the outer side of the line connecting the fixed vertex and the passive vertex. Due to the use of hydraulic cylinders as power, the folding spray bar can rotate 180 ° around a fixed vertex under the drive of the hydraulic cylinder, and the movement is smooth, causing the two spray bars to slowly and smoothly fold together.

4. Protection technology of end spray bar for spray bar spray

When the spray bar spray is operating, the rotating shaft cannot rotate under the action of the hydraulic rod. At this time, if the end spray bar is sprayed on an obstacle, the end spray bar will be impacted by the forward force, which will produce a forward or backward rotating force. The groove of the fixing block slides through the transverse bar, making the end spray bar rotate forward or backward, which reduces the impact of the obstacle on the end spray bar, and protects the safety of the spray bar spray or the obstacle. When the obstacle is removed, the end spray bar will return to its original position under the action of the spring. The device has a simple structure and significant protective effect.

5. Locking system for spray bar spray

When the spray rod is extended, the cylinder rod of the hydraulic cylinder is in an extended state, and the locking rod falls into the slot of the spray rod fixed hinge block, locking the spray rod fixed hinge block and preventing it from swinging around the center of gravity axis, achieving a locked state of the spray rod and preventing damage to the spray rod and equipment due to different steps of extension. Until both sides of the spray rod are fully opened, the two sides are balanced, and the center of gravity of the spray rod coincides with the center of gravity axis. Due to the increase in hydraulic pressure, the cylinder rod of the hydraulic cylinder contracts, and the locking rod disengages from the slot of the spray rod fixed hinge block. The spray rod and the spray rod fixed hinge block can swing around the center of gravity axis, minimizing the impact of the shaking of the walking machinery on the spray rod; When the spray bar is folded, the cylinder rod of the hydraulic cylinder extends, and the locking rod falls into the slot of the spray bar fixing hinge block, locking the spray bar fixing hinge block so that it cannot swing around the center of gravity axis, achieving the locking state of the spray bar. This enables the spraying rod to swing around its center of gravity axis during spraying operations, and when extended or folded, it is locked so that it cannot swing around the center of gravity axis, ensuring both the spraying effect and the safety of the spraying rod and equipment.

Partial accessory display:

Technical parameters of Hizen Tiancheng 3WP-1200 spray bar spray