Air curtain mechanism control system, spraying assembly and spraying machine

Abstract

The utility model discloses an air curtain mechanism control system, spray assembly and sprayer, the air curtain mechanism control system comprises a hydraulic motor, a hydraulic oil radiator and a circulating pump, the hydraulic motor is provided with an oil inlet, an oil outlet and an oil drainage port, the oil inlet of the hydraulic motor is communicated with the oil outlet of the circulating pump, and the oil drainage port is communicated with the hydraulic oil radiator. An oil outlet of the hydraulic motor is communicated with an oil inlet of the circulating pump through the hydraulic oil radiator, and an oil drainage port of the hydraulic motor is communicated with the interior of the hydraulic oil tank, so that after the hydraulic motor operates, hydraulic oil discharged by the hydraulic motor can be cooled by the hydraulic oil radiator in time; therefore, the situation that the temperature of circulating hydraulic oil between the circulating pump and the hydraulic motor is high, and safe operation of equipment is affected is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of sprayer technology, and particularly relates to an air curtain mechanism control system, a spray assembly and a sprayer. Background Technology

[0002] Traditional sprayers lack an air curtain system, resulting in poor performance in windy conditions (the sprayed mist drifts away in the wind and doesn't effectively fall onto the crops). While some sprayers now feature air curtain mechanisms, these are mostly driven by electric motors. However, motor-driven air curtain mechanisms suffer from insufficient airflow and require increased engine power. Hydraulic motor-driven air curtain mechanisms also exist, but this involves repeated circulation of hydraulic oil between the motor and the pump, leading to heat buildup and affecting the normal operation of the equipment. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide an air curtain mechanism control system with simple structure, large driving torque, and the ability to prevent the hydraulic oil temperature from getting too high.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: an air curtain mechanism control system includes a hydraulic motor, a hydraulic oil radiator, and a circulating pump. The hydraulic motor has an oil inlet, an oil outlet, and an oil drain port. The oil inlet of the hydraulic motor is connected to the oil outlet of the circulating pump. The oil outlet of the hydraulic motor is connected to the oil inlet of the circulating pump through the hydraulic oil radiator. The oil drain port of the hydraulic motor is connected to the hydraulic oil tank.

[0005] The beneficial effect of the above technical solution is that the hydraulic oil discharged by the hydraulic motor after operation can be cooled by the hydraulic oil radiator in a timely manner, thereby avoiding the high temperature of the hydraulic oil circulating between the circulating pump and the hydraulic motor, which would affect the safe operation of the equipment.

[0006] In the above technical solution, the oil inlet and oil outlet of the hydraulic motor are connected, and a one-way valve is provided at the connection point. The one-way valve is used to allow hydraulic oil to flow only from the oil outlet to the oil inlet of the hydraulic motor.

[0007] The beneficial effect of the above technical solution is that when the circulating pump is suddenly powered off, the hydraulic motor can still rotate under the action of inertia, avoiding the damage caused by the hydraulic motor's poor oil discharge due to the momentary power failure, which would result in a sharp increase in hydraulic pressure at the hydraulic oil cooler.

[0008] The above technical solution also includes an oil replenishment pipeline, the oil outlet of which is connected to the oil inlet and oil outlet of the circulating pump respectively, and an oil replenishment overflow valve is provided at each connection point.

[0009] The beneficial effect of the above technical solution is that it enables timely replenishment of oil on both the high-pressure side and the low-pressure side of the hydraulic oil circulation circuit between the hydraulic motor and the circulating pump, ensuring that the hydraulic oil in the entire oil circulation circuit is full.

[0010] The above technical solution also includes a hydraulic oil filter on the oil replenishment pipeline.

[0011] The beneficial effect of the above technical solution is that the hydraulic oil in the replenishment pipeline can be filtered by the hydraulic oil filter to prevent impurities from entering the hydraulic oil circulation circuit.

[0012] The above technical solution also includes a bypass relief valve connected in parallel with the hydraulic oil filter on the oil replenishment pipeline.

[0013] The beneficial effect of the above technical solution is that when the hydraulic oil filter is blocked and the oil filtration is not smooth, the hydraulic oil can pass through the bypass relief valve.

[0014] The oil replenishment pipeline described in the above technical solution is also equipped with an oil pressure monitoring element.

[0015] The beneficial effect of the above technical solution is that the oil pressure on the oil replenishment pipeline can be monitored in real time through the oil pressure monitoring element.

[0016] The above technical solution also includes a hydraulic oil pump on the oil replenishment pipeline, and the oil inlet of the oil replenishment pipeline is connected to the hydraulic oil tank. The hydraulic oil pump is used to provide the oil replenishment pipeline with the power to draw oil from the hydraulic oil tank.

[0017] The beneficial effect of the above technical solution is that it enables the oil replenishment pipeline to draw hydraulic oil from the hydraulic oil tank for replenishment under the action of the hydraulic oil pump.

[0018] The second objective of this utility model is to provide a spray assembly with a simple structure and hydraulic drive, which can avoid high oil temperature of hydraulic oil.

[0019] To achieve the above objectives, another technical solution of this utility model is as follows: a spray assembly, including a mounting frame, a spray boom frame, and an air curtain mechanism control system as described above. The spray boom frame is mounted on the side of the mounting frame, and the spray boom frame has an air curtain mechanism. The hydraulic motor is mounted on the spray boom frame, and the hydraulic motor is connected to the power input end of the air curtain mechanism.

[0020] The advantages of the above technical solution are: its structure is simple, and the air curtain mechanism on the spray bar frame can be driven by a hydraulic motor. The hydraulic oil of the hydraulic motor can be continuously cooled during the circulation process, thereby avoiding the hydraulic oil temperature from being too high and affecting the normal operation of the equipment.

[0021] In the above technical solution, there are two spray boom frames and two hydraulic motors. The two hydraulic motors correspond one-to-one with the two spray boom frames, and each hydraulic motor is connected to the corresponding air curtain mechanism.

[0022] The beneficial effects of the above technical solution are that it allows the air curtain mechanisms on the two spray boom frames to operate independently, resulting in high reliability and large air volume.

[0023] Another technical solution of this utility model is as follows: a sprayer, including the spray assembly as described above.

[0024] The advantages of the above technical solution are that it has a simple structure and its air curtain mechanism has good operational stability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the air curtain mechanism control system described in Embodiment 1 of this utility model;

[0026] Figure 2 This is a schematic diagram of the hydraulic oil circuit of the hydraulic motor of the spray assembly described in Embodiment 2 of this utility model, as well as the transmission connection between the hydraulic motor and the air curtain mechanism.

[0027] Figure 3 This is a schematic diagram of the spray assembly described in Embodiment 2 of this utility model.

[0028] In the diagram: 1. Air curtain mechanism control system; 11. Hydraulic motor; 12. Hydraulic oil cooler; 13. Circulation pump; 14. Hydraulic oil tank; 15. Check valve; 16. Oil replenishment line; 161. Oil replenishment relief valve; 162. Hydraulic oil filter; 163. Bypass relief valve; 164. Oil pressure monitoring element; 165. Hydraulic oil pump; 2. Mounting bracket; 3. Spray boom bracket. Detailed Implementation

[0029] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0030] Example 1

[0031] like Figure 1As shown, this embodiment provides an air curtain mechanism control system, including a hydraulic motor 11, a hydraulic oil radiator 12, and a circulating pump 13. The hydraulic motor 11 has an oil inlet, an oil outlet, and an oil drain port. The oil inlet of the hydraulic motor 11 is connected to the oil outlet of the circulating pump 13, and the oil outlet of the hydraulic motor 11 is connected to the oil inlet of the circulating pump 13 through the hydraulic oil radiator 12. The oil drain port of the hydraulic motor 11 is connected to the hydraulic oil tank 14. This allows the hydraulic oil discharged by the hydraulic motor to be cooled by the hydraulic oil radiator in a timely manner after the hydraulic motor is running, thereby avoiding the high temperature of the hydraulic oil circulating between the circulating pump and the hydraulic motor, which would affect the safe operation of the equipment.

[0032] In the above technical solution, the oil inlet and oil outlet of the hydraulic motor 11 are connected, and a one-way valve 15 is provided at the connection. The one-way valve 15 is used to allow hydraulic oil to flow only from the oil outlet to the oil inlet of the hydraulic motor 11. This allows the hydraulic motor to rotate under inertia when the circulating pump is suddenly de-energized, avoiding damage to the hydraulic oil radiator caused by the hydraulic motor's poor oil discharge due to the momentary power failure (that is, when the circulating pump suddenly stops running, the oil inlet and oil outlet of the hydraulic motor can be connected through the one-way valve, thereby rotating until it finally stops).

[0033] The above technical solution also includes a replenishing oil pipeline 16. The oil outlet of the replenishing oil pipeline 16 is connected to the oil inlet and oil outlet of the circulating pump 13, respectively, and a replenishing oil overflow valve 161 is provided at each connection point. This ensures that both the high-pressure and low-pressure sides of the hydraulic oil circulation circuit between the hydraulic motor and the circulating pump can be replenished in a timely manner, ensuring that the hydraulic oil in the entire oil circulation circuit is full. The passage between the oil inlet of the circulating pump and the oil outlet of the hydraulic motor is the low-pressure side of the hydraulic oil circulation circuit, and the passage between the oil outlet of the circulating pump and the oil inlet of the hydraulic motor is the high-pressure side of the hydraulic oil circulation circuit (wherein, the hydraulic oil in the hydraulic oil circulation circuit cannot flow into the replenishing oil pipeline through the replenishing oil overflow valve).

[0034] The oil replenishment pipeline 16 described in the above technical solution is also equipped with a hydraulic oil filter 162, so that the hydraulic oil in the oil replenishment pipeline can be filtered by the hydraulic oil filter to prevent impurities from entering the hydraulic oil circulation circuit.

[0035] The above technical solution also includes a bypass relief valve 163 connected in parallel with the hydraulic oil filter 162 on the oil replenishment pipeline 16. This allows the hydraulic oil to pass through the bypass relief valve when the hydraulic oil filter is blocked and the oil filtration is not smooth.

[0036] The oil replenishment pipeline 16 described in the above technical solution is also equipped with an oil pressure monitoring element 164, so that the oil pressure on the oil replenishment pipeline can be monitored in real time through the oil pressure monitoring element.

[0037] The oil replenishment pipeline 16 described in the above technical solution is also equipped with a hydraulic oil pump 165, and the oil inlet end of the oil replenishment pipeline 16 is connected to the hydraulic oil tank 14. The hydraulic oil pump 165 is used to provide the oil replenishment pipeline 16 with the power to draw oil from the hydraulic oil tank 14, so that the oil replenishment pipeline can draw hydraulic oil from the hydraulic oil tank for oil replenishment under the action of the hydraulic oil pump.

[0038] In this embodiment, parallel connection refers only to the parallel arrangement of hydraulic components, not to the parallel connection of electrical components in an electrical sense.

[0039] In this embodiment, by installing a hydraulic oil cooler in the hydraulic oil circulation circuit, the service life of the hydraulic motor and circulation pump can be extended and their failure rate reduced.

[0040] Example 2

[0041] like Figure 2 and Figure 3 As shown, this embodiment provides a spray assembly, including a mounting frame 2, a spray boom frame 3, and an air curtain mechanism control system 1 as described in Embodiment 1. The spray boom frame 3 is mounted on the side of the mounting frame 2, and has an air curtain mechanism 31. The hydraulic motor 11 is mounted on the spray boom frame 3, and the hydraulic motor 11 is connected to the power input end of the air curtain mechanism. Its structure is simple, and the air curtain mechanism on the spray boom frame can be driven by the hydraulic motor. The hydraulic oil of the hydraulic motor can be continuously cooled during the circulation process, thereby avoiding the hydraulic oil temperature from being too high and affecting the normal operation of the equipment.

[0042] In the above technical solution, there are two spray boom holders 3 and two hydraulic motors 11 (the two hydraulic motors are also connected in parallel). The two hydraulic motors 11 correspond one-to-one with the two spray boom holders 3, and each hydraulic motor 11 is connected to the corresponding air curtain mechanism 31.

[0043] The air curtain mechanism described in this embodiment is existing technology, and it has its own fan (which is driven by a hydraulic motor).

[0044] Example 3

[0045] This embodiment 3 provides a sprayer, including the spray assembly as described in embodiment 2, which has a simple structure and good stability in the operation of its air curtain mechanism.

[0046] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A control system for an air curtain mechanism, characterized in that, The system includes a hydraulic motor (11), a hydraulic oil cooler (12), and a circulating pump (13). The hydraulic motor (11) has an oil inlet, an oil outlet, and an oil drain port. The oil inlet of the hydraulic motor (11) is connected to the oil outlet of the circulating pump (13). The oil outlet of the hydraulic motor (11) is connected to the oil inlet of the circulating pump (13) through the hydraulic oil cooler (12). The oil drain port of the hydraulic motor (11) is connected to the hydraulic oil tank (14).

2. The air curtain mechanism control system according to claim 1, characterized in that, The inlet and outlet of the hydraulic motor (11) are connected, and a one-way valve (15) is provided at the connection point. The one-way valve (15) is used to allow hydraulic oil to flow from the outlet to the inlet of the hydraulic motor (11) only.

3. The air curtain mechanism control system according to claim 1, characterized in that, It also includes an oil replenishment pipeline (16), the oil outlet of which is connected to the oil inlet and oil outlet of the circulating pump (13) respectively, and an oil replenishment overflow valve (161) is provided at each connection point.

4. The air curtain mechanism control system according to claim 3, characterized in that, A hydraulic oil filter (162) is also installed on the oil replenishment line (16).

5. The air curtain mechanism control system according to claim 4, characterized in that, The oil replenishment line (16) is also equipped with a bypass relief valve (163) connected in parallel with the hydraulic oil filter (162).

6. The air curtain mechanism control system according to claim 3, characterized in that, The oil replenishment pipeline (16) is also equipped with an oil pressure monitoring element (164).

7. The air curtain mechanism control system according to claim 3, characterized in that, The oil replenishment pipeline (16) is also equipped with a hydraulic oil pump (165), and the oil inlet end of the oil replenishment pipeline (16) is connected to the hydraulic oil tank (14). The hydraulic oil pump (165) is used to provide the oil replenishment pipeline (16) with the power to draw oil from the hydraulic oil tank (14).

8. A spray assembly, characterized in that, The device includes a mounting bracket (2), a spray boom bracket (3), and an air curtain mechanism control system (1) as described in any one of claims 1-7. The spray boom bracket (3) is mounted on the side of the mounting bracket (2), and the spray boom bracket (3) has an air curtain mechanism (31). The hydraulic motor (11) is mounted on the spray boom bracket (3) and is connected to the power input end of the air curtain mechanism.

9. The spray assembly according to claim 8, characterized in that, Two spray booms (3) and two hydraulic motors (11) are provided. The two hydraulic motors (11) correspond one-to-one with the two spray booms (3). Each hydraulic motor (11) is connected to the corresponding air curtain mechanism (31) for transmission.

10. A sprayer, characterized in that, Includes the spray assembly as described in claim 8 or 9.

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