Liquid fertilizer applicator suitable for low-temperature operation

Abstract

The invention belongs to the technical field of agricultural machinery, and discloses a liquid fertilizer applicator suitable for low-temperature operation, which comprises a traction rack, a liquid fertilizer spreading device and a heat preservation component, the traction machine device comprises a traction rack and a walking system and is used for bearing and operating the liquid fertilizer spreading device; the liquid fertilizer spreading device comprises a tank body, an air pump, a gas-liquid separation device, a single-action hydraulic cylinder, a valve and a liquid nozzle, the heat preservation component comprises a heat preservation layer and an electric heating tracing band. Heat conduction between liquid fertilizer in the tank body and the outside is effectively isolated, the icing phenomenon of the liquid fertilizer on the inner wall of the tank body is remarkably reduced, heat is isolated from being transmitted to metal pieces such as the tank body, and freezing of the valve and a pipeline is effectively prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural machinery, and in particular relates to a liquid fertilizer applicator suitable for low-temperature operation, and is mainly used for applying liquid organic fertilizer in a low-temperature environment in winter in cold northern regions. Background Art

[0002] With the in-depth development of the national green breeding cycle project, the proportion of liquid organic fertilizer returned to the field has increased year by year. In the cold northern regions, due to the influence of planting and harvesting time, the operation time of returning liquid organic fertilizer to the field is short, resulting in the need for some liquid organic fertilizer to be implemented in the low temperature environment in winter. In winter, when the outdoor temperature reaches -10℃~-20℃, the temperature of the liquid organic fertilizer in the oxidation pond is about 4℃. When the liquid fertilizer spreader is operating, since the temperature of the metal tank is close to the outdoor temperature, the liquid organic fertilizer will freeze and hang on the wall when it contacts the low-temperature metal on the inner wall of the tank. Because after each spraying operation of the liquid fertilizer spreader, the temperature of the metal tank drops to the same temperature as the ambient temperature again during the return process, so in the low temperature environment, due to the rapid heat conduction of the metal, each time the liquid fertilizer is loaded, a layer of ice will form on the inner wall, causing the effective volume of the tank to continue to decrease until the fertilizer outlet pipe is frozen and blocked and cannot operate. In order to solve this problem, it is urgent to design a liquid fertilizer applicator suitable for low-temperature operation. Summary of the invention

[0003] The purpose of this application is to solve the problem of liquid organic fertilizer freezing and sticking to the wall when it comes into contact with the low-temperature metal on the inner wall of the tank because the temperature of the metal tank is close to the outdoor temperature when liquid organic fertilizer needs to be applied in a low-temperature environment in winter. A liquid fertilizer applicator suitable for low-temperature operation is proposed.

[0004] The technical solution adopted in this application:

[0005] A liquid fertilizer applicator suitable for low-temperature operation, comprising a traction device, a liquid fertilizer spreading device, and a heat-insulating component;

[0006] The traction device includes a traction frame and a walking system, which are used to carry and operate the liquid fertilizer spreading device;

[0007] The liquid fertilizer spreading device comprises a tank, an air pump, a gas-liquid separation device, a single-acting hydraulic cylinder, a valve, and a liquid nozzle;

[0008] The front bottom of the tank body is installed on the traction frame, the middle of the tank body is installed with a walking system, the air pump is located at the front side of the tank body and is placed on the traction frame, the air pump is connected to the negative pressure port on the top of the tank body through a pipeline, a gas-liquid separation device is installed on the pipeline, and the air pump is used to establish negative pressure in the tank body; the lower left side of the tank body is provided with a fertilizer suction port;

[0009] A single-acting hydraulic cylinder is connected to the right wall of the tank body, and the single-acting hydraulic cylinder moves in the vertical direction; a fertilizer discharge pipe is arranged at the right bottom of the tank body, and a valve is arranged in the fertilizer discharge pipe, and the single-acting hydraulic cylinder drives the valve to open or close; a liquid nozzle is installed at the right end of the fertilizer discharge pipe to spray the liquid fertilizer in the liquid fertilizer tank;

[0010] The heat-insulating component includes a heat-insulating layer and an electric heating tape. The heat-insulating layer is arranged on the inner wall of the tank body to isolate the heat conduction between the liquid fertilizer inside the tank body and the outside; the electric heating tape is wrapped around the fertilizer discharge pipe, valve and nozzle to prevent the valve and pipeline from freezing.

[0011] Furthermore, the liquid fertilizer spreading device also includes a muffler, which is connected to the air pump and is used to reduce the noise generated when the air pump is working.

[0012] Furthermore, the liquid fertilizer spreading device also includes a tank leveling mechanism, which includes a support and a hydraulic support rod. The lower part of the hydraulic support rod is installed on the support, and the upper end of the hydraulic support rod is hinged to the left side wall of the tank body to balance the tank body.

[0013] Furthermore, a fertilizer diffusion baffle is installed at the lower right end of the fertilizer discharge pipe to block and diffuse the liquid fertilizer sprayed from the nozzle to form a fan-shaped spread on the ground surface, thereby realizing a wide-range spreading operation.

[0014] Furthermore, the heat-insulating component includes an engineering plastic connecting sleeve and a thermal insulation bridge connecting plate. The engineering plastic connecting sleeve and the thermal insulation bridge connecting plate are arranged at the fertilizer discharge pipe, valve and nozzle to isolate heat from being transferred to the tank body.

[0015] The beneficial effects of this application are:

[0016] 1. This application effectively isolates the heat conduction between the liquid fertilizer inside the tank and the outside, significantly reducing the freezing of liquid fertilizer on the inner wall of the tank;

[0017] 2. This application isolates heat from being transferred to metal parts such as the tank;

[0018] 3. This application effectively prevents valves and pipelines from freezing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 yes Figure 1 A local enlarged view of point A;

[0021] Figure 3 yes Figure 1 A partial enlarged view of point B.

[0022] In the figure: 1. traction frame, 2. tank leveling mechanism, 3. air pump, 4. gas-liquid separation device, 5. pipeline, 6. silencer, 7. tank, 9. fertilizer suction port, 10. insulation layer, 11. walking system, 12. battery pack, 13. hydraulic cylinder fixing seat, 14. single-acting hydraulic cylinder, 15. oil inlet, 16. piston rod, 17. compression spring, 18. engineering plastic connecting sleeve, 19. thermal insulation bridge connecting plate, 20. valve, 21. electric heating heating belt, 22. liquid nozzle, 23. fertilizer diffusion baffle. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Embodiment: Combining Figure 1-3 To illustrate this embodiment, a liquid fertilizer applicator suitable for low-temperature operation includes a traction device, a liquid fertilizer spreading device, and a heat-insulating component;

[0025] The tractor device includes a tractor frame 1 and a walking system 11, which are used to carry and operate the liquid fertilizer spreading device;

[0026] The liquid fertilizer spreading device comprises a tank body 7, an air pump 3, a gas-liquid separation device 4, a fertilizer suction port 9, a single-acting hydraulic cylinder 14, a piston rod 16, a compression spring 17, a valve 20, and a liquid nozzle 22;

[0027] The front bottom of the tank body 7 is installed on the traction frame 1, and a walking system 11 is installed in the middle of the tank body 7. The air pump 3 is located at the front side of the tank body 7 and is placed on the traction frame 1. The air pump 3 is connected to the negative pressure port on the top of the tank body 7 through a pipeline 5. A gas-liquid separation device 4 is installed on the pipeline 5. The air pump is used to establish a negative pressure in the tank body 7; a fertilizer suction port 9 is provided at the lower left side of the tank body 7;

[0028] A single-acting hydraulic cylinder 14 is connected to the right side wall of the tank body 7, and the single-acting hydraulic cylinder 14 moves in a vertical direction. An oil inlet 15 is provided at the lower end of the single-acting hydraulic cylinder 14; a fertilizer discharge pipe is provided at the right bottom of the tank body 7, and a valve 20 is provided in the fertilizer discharge pipe. The upper end of the piston rod 16 of the single-acting hydraulic cylinder 14 is connected to the hydraulic cylinder fixing seat 13, and the lower end of the piston rod 16 is connected to the valve 20, and drives the valve 20 to open or close; a liquid nozzle 22 is installed at the right end of the fertilizer discharge pipe to spray the liquid fertilizer in the liquid fertilizer tank;

[0029] The heat-insulating component includes a heat-insulating layer 10 and an electric heating heat-trapping belt 21. The heat-insulating layer 10 is arranged on the inner wall of the tank body 7 to isolate the heat conduction between the liquid fertilizer inside the tank body and the outside; the electric heating heat-trapping belt 21 is wrapped around the fertilizer discharge pipe, valve and nozzle, and is powered and heated by a battery pack 12 fixedly installed on the upper right end of the tank body 7 to prevent the valve and the pipeline from freezing.

[0030] Furthermore, the liquid fertilizer spreading device includes a muffler 6, which is connected to the air pump 3 to reduce the noise generated when the air pump 3 is working.

[0031] Furthermore, the liquid fertilizer spreading device includes a tank leveling mechanism 2 , which includes a support and a hydraulic support rod. The support is fixed on the traction frame 1 and is used to balance the tank 7 .

[0032] Furthermore, a fertilizer diffusion baffle 23 is installed at the lower right end of the fertilizer discharge pipe to block and diffuse the liquid fertilizer sprayed from the nozzle 22 to form a fan-shaped spread on the ground surface, thereby realizing a wide-range spreading operation.

[0033] Furthermore, the heat-insulating component includes an engineering plastic connecting sleeve 18 and a heat-insulating thermal-break connecting plate 19, which are arranged at the fertilizer discharge pipe, valve 20 and nozzle 22 to isolate heat from being transferred to the tank body.

[0034] Working principle and process:

[0035] During operation, the tractor pulls the liquid fertilizer spreader through the traction frame, and the power output shaft (PTO) drives the air pump. When the liquid fertilizer is loaded, the air pump is switched to the negative pressure position, and a negative pressure is established in the tank. The fertilizer suction hose is connected through the fertilizer suction port 9, and the fertilizer suction port valve is opened to suck the liquid fertilizer in the oxidation pond into the tank body. After adding it to the designated position, the valve is closed and the air pump stops working. During the spraying operation, the air pump is switched to the positive pressure position, and a positive pressure is established in the tank. After the pressure reaches the specified value, the oil is supplied to the oil inlet 15 of the single-acting hydraulic cylinder 14 located at the tail of the spreader through the rear hydraulic output of the tractor. The piston rod overcomes the spring pressure and retracts, and drives the valve 20 to open. The liquid fertilizer is sprayed from the liquid nozzle of the fertilizer discharge pipe under the action of the positive pressure air in the tank, and the liquid impacts the fertilizer diffusion baffle 23, forming a fan-shaped spread on the surface, thereby realizing a wide-width spreading operation. Adding a thermal insulation layer of more than 1 cm on the inner wall of the tank body and the inner wall of the fertilizer discharge pipe can effectively isolate the heat conduction between the liquid fertilizer inside the tank body and the outside, and significantly reduce the freezing of liquid fertilizer on the inner wall of the tank body; adding engineering plastic connecting sleeves 18 and thermal insulation bridge connecting plates 19 to the fertilizer discharge pipe, valve and nozzle can isolate the heat from being transferred to the tank body and other metal parts, and at the same time, the fertilizer discharge pipe, valve and nozzle are wrapped with electric heating tape to prevent the valve and pipeline from freezing.

Claims

1. A liquid fertilizer applicator suitable for low temperature operation, characterized in that: It includes a traction device, a liquid fertilizer spreading device, and a heat preservation component; The traction device comprises a traction frame (1) and a walking system (11), which are used to carry and operate the liquid fertilizer spreading device; The liquid fertilizer spreading device comprises a tank body (7), an air pump (3), a gas-liquid separation device (4), a single-acting hydraulic cylinder (14), a valve (20), and a liquid nozzle (22); The front bottom of the tank body (7) is mounted on the traction frame (1), a walking system (11) is mounted in the middle of the tank body (7), an air pump (3) is located at the front side of the tank body (7) and is placed on the traction frame (1), the air pump (3) is connected to the negative pressure port at the top of the tank body (7) through a pipeline (5), a gas-liquid separation device (4) is mounted on the pipeline (5), and the air pump is used to establish negative pressure in the tank body (7); a fertilizer suction port (9) is arranged at the lower left side of the tank body (7); A single-acting hydraulic cylinder (14) is connected to the right side wall of the tank body (7), and the single-acting hydraulic cylinder (14) moves in a vertical direction; a fertilizer discharge pipe is arranged at the right bottom of the tank body (7), and a valve (20) is arranged in the fertilizer discharge pipe, and the single-acting hydraulic cylinder drives the valve (20) to open or close; a liquid nozzle (22) is installed at the right end of the fertilizer discharge pipe for spraying liquid fertilizer in the liquid fertilizer tank; The heat-insulating component comprises a heat-insulating layer (10) and an electric heating heating tape (21). The heat-insulating layer (10) is arranged on the inner wall of the tank body (7) to isolate the liquid fertilizer inside the tank body from the heat conduction outside; the electric heating heating tape (21) is wrapped around the fertilizer discharge pipe, valve and nozzle to prevent the valve and pipeline from freezing.

2. The liquid fertilizer applicator suitable for low temperature operation according to claim 1, characterized in that: It also includes a muffler (6), which is connected to the air pump (3) and is used to reduce the noise generated when the air pump (3) is working.

3. The liquid fertilizer applicator suitable for low temperature operation according to claim 2, characterized in that: It also includes a tank body leveling mechanism (2), which includes a support and a hydraulic support rod. The support is fixed on the traction frame (1), the lower part of the hydraulic support rod is installed on the support, and the upper end of the hydraulic support rod is hinged to the left side wall of the tank body (7) to balance the tank body (7).

4. The liquid fertilizer applicator suitable for low temperature operation according to claim 1, characterized in that: A fertilizer diffusion baffle (23) is installed at the lower right end of the fertilizer discharge pipe, which is used to block and diffuse the liquid fertilizer sprayed by the nozzle (22) to form a fan-shaped spread on the ground surface, thereby realizing a wide-range spreading operation.

5. The liquid fertilizer applicator suitable for low temperature operation according to claim 4, characterized in that: The heat-insulating component further comprises an engineering plastic connecting sleeve (18) and a heat-insulating thermal-break bridge connecting plate (19). The engineering plastic connecting sleeve (18) and the heat-insulating thermal-break bridge connecting plate (19) are arranged at the fertilizer discharge pipe, the valve (20) and the nozzle (22) to prevent heat from being transferred to the tank body.

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