Liquid fertilizer applying device for agricultural production

Abstract

The invention provides a liquid fertilizer applying device for agricultural production, and relates to the technical field of liquid fertilizer applying devices.The liquid fertilizer applying device comprises a liquid storage tank, supporting frames are fixedly installed on the two sides of the liquid storage tank, moving wheels are rotatably installed on the two supporting frames, a liquid storage cavity is formed in the liquid storage tank, and a working shaft is rotatably installed in the liquid storage cavity. According to the liquid fertilizer applying and spraying device for agricultural production, by arranging the liquid storage tank, the supporting frame, the moving wheels, the working shaft, stirring blades, a transmission mechanism, a spraying pipe, a piston plate and a one-way plugging structure, when a liquid fertilizer is applied and sprayed, stirring and mixing of the liquid fertilizer and water can be completed only by pushing the whole device to move; the liquid fertilizer mixing device is simple in structure and convenient to operate, enables mixing to be more uniform, can automatically complete spraying operation of liquid fertilizer, does not need arrangement of power sources such as a motor and an engine, reduces the situation of insufficient energy, reduces manufacturing cost, is suitable for farmers and small-area planting fields, reduces labor intensity of the farmers, and improves working efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of liquid fertilizer application devices, and in particular to a liquid fertilizer application device for agricultural production. Background Art

[0002] Liquid fertilizer, also known as fluid fertilizer or liquid fertilizer, is a liquid product containing at least one nutrient element required by crops. Liquid fertilizers usually contain major nutrients such as nitrogen, phosphorus, potassium, and various trace elements. These nutrients exist in the form of ions in water, which is easy for plant roots to absorb.

[0003] The history of liquid fertilizer can be traced back to 200 years ago. After a long period of development, it has now formed many types, mainly including liquid nitrogen fertilizer, liquid compound fertilizer, etc. There are many varieties of liquid fertilizers, including amino acids, humic acid, trace elements, medium elements, macroelements and organic water-soluble fertilizers.

[0004] In agriculture, liquid fertilizers are usually used through irrigation, pouring, spraying and foliar spraying. In rural cultivated land or small planting areas, most of the watering is done manually, or liquid fertilizers are sprayed on crops using backpack and shoulder spray boxes. Farmers have high labor intensity and low work efficiency. Vehicle-mounted sprayers and large drone spraying systems are used for large-area crop spraying, which has high economic costs. Vehicle-mounted sprayers are large and can easily damage the land, while drones require multiple backup batteries, which increases economic costs. Summary of the invention

[0005] Based on the technical problems existing in the background technology, the present invention proposes a liquid fertilizer spreading device for agricultural production.

[0006] The present invention provides a liquid fertilizer application device for agricultural production, comprising a liquid storage tank, support frames are fixedly installed on both sides of the liquid storage tank, moving wheels are rotatably installed on the two support frames, a liquid storage cavity is provided in the liquid storage tank, a working shaft is rotatably installed in the liquid storage cavity, a plurality of stirring blades are circumferentially connected to the outer periphery of the working shaft, a transmission mechanism is arranged between the moving wheel and the working shaft, and when the moving wheel rotates, the transmission mechanism can convert the rotation of the moving wheel into the rotation of the working shaft and the stirring blades in the liquid storage cavity; A spray pipe connected to the liquid storage chamber is fixedly installed at the bottom of the liquid storage tank, spray holes are opened on both sides of the spray pipe, a piston plate is slidably installed in the spray pipe, a plurality of liquid inlet holes are penetrated through the piston plate, a one-way blocking structure capable of blocking the liquid inlet holes is installed on the piston plate, a linkage mechanism is arranged between the working shaft and the piston plate, when the working shaft rotates, the linkage mechanism can convert the rotation action of the working shaft into the reciprocating sliding of the piston plate in the spray pipe, when the piston plate slides upward in the spray pipe, the one-way blocking structure is opened, and the liquid fertilizer in the liquid storage chamber can enter the spray pipe through the liquid inlet hole, when the piston plate slides downward in the spray pipe, the one-way blocking structure is closed, and the liquid fertilizer in the spray pipe is squeezed through the spray hole and sprayed out.

[0007] Preferably, the transmission mechanism includes a No. 1 bevel gear, a No. 2 bevel gear, a transmission shaft, a No. 3 bevel gear and a No. 4 bevel gear; the moving wheel is rotatably mounted on the support frame via a rotating shaft, a No. 1 transmission groove is provided in the support frame, the No. 1 bevel gear is fixedly mounted on the rotating shaft of the moving wheel, the No. 2 bevel gear is located in the No. 1 transmission groove, and the No. 2 bevel gear is meshed with the No. 1 bevel gear, the transmission shaft is rotatably mounted in the support frame, one end of the transmission shaft is fixedly connected to the No. 2 bevel gear, a No. 2 transmission groove is also provided in the support frame, the No. 3 bevel gear is fixedly mounted on the other end of the transmission shaft, the No. 3 bevel gear is located in the No. 2 transmission groove, the No. 4 bevel gear is located in the No. 2 transmission groove, the No. 4 bevel gear is meshed with the No. 3 bevel gear, and the No. 4 bevel gear is fixedly connected to the end of the working shaft.

[0008] Preferably, the linkage mechanism includes an eccentric block, an eccentric shaft, a connecting rod and a linear rod; the middle section of the working shaft located in the liquid storage chamber is in a disconnected state, there are two eccentric blocks, and the two eccentric blocks are respectively fixedly mounted at the two ends of the disconnected middle portion of the working shaft, the two ends of the eccentric shaft are respectively fixedly connected to the two eccentric blocks, the eccentric shaft is arranged parallel to the working shaft, the axes of the eccentric shaft and the working shaft do not coincide, one end of the connecting rod is rotatably mounted on the eccentric shaft, the other end of the connecting rod is rotatably connected to the linear rod, and the end of the linear rod away from the connecting rod is fixedly connected to the piston plate.

[0009] Preferably, a stabilizing frame is fixedly mounted at the opening of the spray pipe, and the linear rod slides through the stabilizing frame.

[0010] Preferably, there are multiple stirring blades, and the multiple stirring blades are symmetrically arranged on the working shaft about the eccentric axis.

[0011] Preferably, the one-way sealing structure includes a sealing plate; a sealing groove is provided at the bottom of the piston plate and is rotatably matched with the sealing plate; the sealing plate is rotatably installed in the sealing groove through a rotating shaft; a torsion spring is mounted on the rotating shaft of the sealing plate, and the torsion spring can drive the sealing plate to rotate and seal the bottom opening of the liquid inlet hole.

[0012] Preferably, an adjusting structure capable of blocking the spray hole is installed in the spray pipe, and when the piston plate moves upward in the spray pipe, the adjusting structure can block the spray hole, and when the piston plate moves downward in the spray pipe, the adjusting structure can open the spray hole.

[0013] Preferably, the adjustment structure comprises an adjustment plug, a limit rod and a return spring; the adjustment plug is slidably mounted in the spray pipe, the limit rod is fixedly mounted on the bottom end of the adjustment plug, the limit rod slides through the bottom end of the spray pipe, the return spring is sleeved on the limit rod, and the two ends of the return spring are respectively fixedly connected to the bottom end of the adjustment plug and the bottom inner wall of the spray pipe; The regulating plug can cover the spray hole.

[0014] Preferably, a feed port is installed on the liquid storage tank; a handrail is fixedly installed on one side of the liquid storage tank; and a supporting leg is fixedly connected to the bottom of one side of the liquid storage tank close to the handrail.

[0015] The liquid fertilizer spraying device for agricultural production proposed by the present invention has the following beneficial effects: through the provision of a liquid storage tank, a support frame, a movable wheel, a working shaft, a stirring blade, a transmission mechanism, a spraying pipe, a piston plate and a one-way blocking structure, when spraying liquid fertilizer, it is only necessary to push the entire device to move to complete the stirring and mixing of the liquid fertilizer and water, making the mixing more uniform, and can also automatically complete the spraying operation of the liquid fertilizer, without the need for the provision of power sources such as motors and engines, thereby reducing the occurrence of energy shortages and reducing construction costs. It is suitable for use by farmers and small-area planting lands, and also reduces the labor intensity of farmers and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a liquid fertilizer spreading device for agricultural production proposed by the present invention; Figure 2 A cross-sectional view of a liquid fertilizer spreading device for agricultural production proposed by the present invention; Figure 3 This is a schematic diagram of the structure of a spray pipe in a liquid fertilizer application device for agricultural production proposed by the present invention; Figure 4 This is a schematic structural diagram of a working shaft, an eccentric block and an eccentric shaft in a liquid fertilizer spreading device for agricultural production proposed by the present invention; Figure 5A cross-sectional view of a support frame and a moving wheel in a liquid fertilizer spreading device for agricultural production proposed by the present invention; Figure 6 A cross-sectional view of a spray pipe in a liquid fertilizer spraying device for agricultural production proposed by the present invention; Figure 7 A cross-sectional view of a piston plate in a liquid fertilizer spreading device for agricultural production proposed by the present invention; Figure 8 The present invention is a schematic structural diagram of an adjusting plug and a limiting rod in a liquid fertilizer spreading device for agricultural production proposed by the present invention.

[0017] In the figure: 1. liquid storage tank; 2. support frame; 3. moving wheel; 4. working shaft; 5. spray pipe; 6. spray hole; 7. stirring blade; 8. piston plate; 9. liquid inlet hole; 10. No. 1 bevel gear; 11. No. 2 bevel gear; 12. transmission shaft; 13. No. 3 bevel gear; 14. No. 4 bevel gear; 15. eccentric block; 16. eccentric shaft; 17. connecting rod; 18. linear rod; 19. stabilizing frame; 20. sealing plate; 21. adjusting plug; 22. limit rod; 23. reset spring; 24. handrail; 25. supporting leg. DETAILED DESCRIPTION

[0018] Reference Figure 1-Figure 8The present invention proposes a liquid fertilizer application device for agricultural production, comprising a liquid storage tank 1, support frames 2 are fixedly installed on both sides of the liquid storage tank 1, and moving wheels 3 are rotatably installed on the two support frames 2. The function of the support frames 2 is to be used when fertilizing some crops with taller seedlings, such as cotton, pepper, tomato, etc., and a feeding port is installed on the liquid storage tank 1; a handrail 24 is fixedly installed on one side of the liquid storage tank 1; a support leg 25 is fixedly connected to the bottom of one side of the liquid storage tank 1 close to the handrail 24. In actual operation, the farmer holds the handrail 24 and lifts the support leg 25 at the bottom of the liquid storage tank 1. The operation method is similar to that of a wheelbarrow on a construction site. A liquid storage cavity is opened in the liquid storage tank 1, and a working shaft 4 is rotatably installed in the liquid storage cavity. A plurality of stirring blades 7 are circumferentially connected to the outer periphery of the working shaft 4. A transmission mechanism is arranged between the moving wheel 3 and the working shaft 4. When the moving wheel 3 and the working shaft 4 are moved, the stirring blades 7 are rotatably installed in the liquid storage cavity. When the moving wheel 3 rotates, the transmission mechanism can convert the rotation of the moving wheel 3 into the rotation of the working shaft 4 and the stirring blade 7 in the liquid storage chamber; in actual operation, the farmer pours water and liquid fertilizer into the liquid storage tank 1 in proportion, and then stirs the liquid fertilizer and water. When pushing the entire device to move, it is necessary to ensure that the moving wheel 3 rolls in the soil ditch between the soil ridges to avoid crushing the crops. Farmers can choose to walk on the soil ridges or in the soil ditch according to the planting density of crops, the strength of seedlings and branches, etc. When pushing the entire device to move, the moving wheel 3 rolls on the ground. While the moving wheel 3 rolls, the working shaft 4 and the stirring blade 7 are driven to rotate through the transmission mechanism. The stirring blade 7 stirs and mixes the water and the liquid fertilizer, so that the liquid fertilizer and water can be mixed more evenly. At the same time, there is no need for farmers to perform additional operations, which reduces the labor intensity of farmers.

[0019] like Figure 1 and Figure 2As shown in the figure, a spray pipe 5 connected to the liquid storage chamber is fixedly installed at the bottom of the liquid storage tank 1, and spray holes 6 are opened on both sides of the spray pipe 5. The spray holes 6 are designed to be inclined downward, and have a tendency to move downward when the liquid fertilizer is sprayed out, so that the liquid fertilizer is sprayed on the root and stem position of the crop or the soil at the root and stem. A piston plate 8 is slidably installed in the spray pipe 5, and a plurality of liquid inlet holes 9 are opened through the piston plate 8. A one-way blocking structure capable of blocking the liquid inlet hole 9 is installed on the piston plate 8. Between the working shaft 4 and the piston plate 8 A linkage mechanism is provided. When the working shaft 4 rotates, the linkage mechanism can convert the rotation of the working shaft 4 into the reciprocating sliding of the piston plate 8 in the spraying pipe 5. The piston plate 8 always reciprocates in the spraying pipe 5. The diameter of the piston plate 8 is the same as the inner diameter of the spraying pipe 5. When the piston plate 8 slides upward in the spraying pipe 5, the one-way blocking structure is opened, and the liquid fertilizer in the liquid storage chamber can enter the spraying pipe 5 through the liquid inlet hole 9. When the piston plate 8 slides downward in the spraying pipe 5, the one-way blocking structure is closed, and the liquid in the spraying pipe 5 is sprayed. The fertilizer is squeezed and sprayed out through the spray hole 6. When the entire device is pushed to move, the moving wheel 3 drives the working shaft 4 to rotate. While the working shaft 4 is rotating, it can also drive the piston plate 8 to slide back and forth in the spray pipe 5 through the linkage mechanism. When the piston plate 8 moves upward in the spray pipe 5, the one-way blocking structure opens the liquid inlet hole 9, and the diluted liquid fertilizer in the liquid storage chamber enters the spray pipe 5 through the liquid inlet hole 9 under the action of water pressure. When the piston plate 8 moves downward in the spray pipe 5, the one-way blocking structure closes the liquid inlet hole 9, and the spray pipe 5 The gas inside is compressed, so that the diluted liquid fertilizer in the spray pipe 5 is sprayed out from the spray hole 6 to reach the root and stem position of the crop. With the forward movement of the device and the reciprocating motion of the piston plate 8, the diluted liquid fertilizer in the liquid storage chamber is sprayed out to fertilize the crops. The farmer only needs to push the device to move to complete the spraying operation of the liquid fertilizer, which reduces the labor intensity of the farmers and improves the work efficiency. At the same time, the whole device does not need to be driven by electricity, etc., which reduces the volume and weight of the whole device, and there is no need to worry about insufficient power.

[0020] The existing backpack spray box requires the farmer to carry the entire spray box on his back, and then use one hand to manually crank the crank handle and the other hand to hold the straight tube of the spray head to spray the liquid fertilizer. The labor intensity of carrying the entire spray box is high, especially when carrying the spray box on the back, the farmer needs to exert force on the waist, which may cause waist injury. In addition, the backpack spray box also requires farmers to fully mix the liquid fertilizer and water first.

[0021] like Figure 2 and Figure 5As shown in, the transmission mechanism includes a No. 1 bevel gear 10, a No. 2 bevel gear 11, a transmission shaft 12, a No. 3 bevel gear 13 and a No. 4 bevel gear 14; the moving wheel 3 is rotatably mounted on the support frame 2 through a rotating shaft, a No. 1 transmission groove is provided in the support frame 2, the No. 1 bevel gear 10 is fixedly mounted on the rotating shaft of the moving wheel 3, the No. 2 bevel gear 11 is located in the No. 1 transmission groove, and the No. 2 bevel gear 11 is meshed with the No. 1 bevel gear 10, the transmission shaft 12 is rotatably mounted in the support frame 2, one end of the transmission shaft 12 is fixedly connected to the No. 2 bevel gear 11, a No. 2 transmission groove is also provided in the support frame 2, the No. 3 bevel gear 13 is fixedly mounted on the other end of the transmission shaft 12, the No. 3 bevel gear 13 is located in the No. 2 transmission groove, the No. 4 bevel gear 14 is located in the No. 2 transmission groove, and the No. 4 bevel gear 14 is located in the No. 2 transmission groove. The bevel gear 14 is meshed with the third bevel gear 13, and the fourth bevel gear 14 is fixedly connected to the end of the working shaft 4. When the entire device is pushed to move, the moving wheel 3 rolls on the ground, and the moving wheel 3 drives its rotating shaft to rotate synchronously, and then its rotating shaft drives the first bevel gear 10 to rotate, and the rotating shaft drives the second bevel gear 11 to rotate, and the second bevel gear 11 drives the transmission shaft 12 to rotate, and the transmission shaft 12 drives the third bevel gear 13 to rotate, and the third bevel gear 13 drives the fourth bevel gear 14 to rotate, and the fourth bevel gear 14 drives the working shaft 4 and the stirring blade 7 to rotate synchronously, among which the number of teeth of the third bevel gear 13 is much greater than the number of teeth of the fourth bevel gear 14, and similarly the number of teeth of the first bevel gear 10 is much greater than the number of teeth of the second bevel gear 11.

[0022] like Figure 2 and Figure 4 As shown in the figure, the linkage mechanism includes an eccentric block 15, an eccentric shaft 16, a connecting rod 17 and a linear rod 18; the middle section of the working shaft 4 located in the liquid storage chamber is in a disconnected state, the number of eccentric blocks 15 is two, the two eccentric blocks 15 are respectively fixedly mounted on the two ends of the disconnection in the middle of the working shaft 4, the two ends of the eccentric shaft 16 are respectively fixedly connected to the two eccentric blocks 15, the eccentric shaft 16 is arranged parallel to the working shaft 4, the axis of the eccentric shaft 16 and the working shaft 4 do not coincide, one end of the connecting rod 17 is rotatably sleeved on the eccentric shaft 16, and the other end of the connecting rod 17 is connected to the linear rod 18 is rotatably connected, and one end of the linear rod 18 away from the connecting rod 17 is fixedly connected to the piston plate 8. When the working shaft 4 rotates, the eccentric block 15 will be driven to rotate synchronously. The eccentric block 15 makes a circular motion and drives the eccentric shaft 16 to make a circular motion synchronously, so that the connecting rod 17 rotates on the eccentric shaft 16. Since the linear rod 18 and the piston plate 8 are fixedly connected, the piston plate 8 is a reciprocating linear motion, that is, the linear rod 18 can only move linearly. The working principle of the linkage mechanism is similar to that of a crank connecting rod, so that the rotation of the working shaft 4 drives the reciprocating motion of the piston plate 8.

[0023] like Figure 2 and Figure 3As shown in FIG, a stabilizing frame 19 is fixedly installed at the opening of the spray pipe 5, and the linear rod 18 slides through the stabilizing frame 19. The stabilizing frame 19 maintains the linear motion trajectory of the linear rod 18, thereby reducing the occurrence of the linear rod 18 being pulled and deflected by the connecting rod 17.

[0024] like Figure 2 As shown in the figure, there are multiple stirring blades 7, and the multiple stirring blades 7 are symmetrically arranged on the working shaft 4 about the eccentric shaft 16. When the working shaft 4 drives the stirring blades 7 to rotate, the stirring blades 7 stir the water and liquid fertilizer in the liquid storage chamber, so that the mixed liquid on both sides of the liquid storage chamber also moves toward the middle position of the liquid storage chamber. The mixed liquid on both sides collides and completes mixing when moving to the middle position of the liquid storage chamber, so that the mixed liquid does not move in a single direction, so that the mixing effect is better. In addition, when the mixed liquids on both sides collide with each other, pressure will also be generated, so that the diluted mixed liquid can better enter the spray pipe 5.

[0025] like Figure 2 , Figure 6 and Figure 7 As shown in the figure, the one-way blocking structure includes a blocking plate 20; a blocking groove is provided at the bottom of the piston plate 8 for rotationally cooperating with the blocking plate 20, and the blocking plate 20 is rotatably installed in the blocking groove through a rotating shaft, and a torsion spring is mounted on the rotating shaft of the blocking plate 20, which can drive the blocking plate 20 to rotate and block the bottom opening of the liquid inlet hole 9; under normal conditions, without the action of external force, the torsion spring can drive the blocking plate 20 to rotate and block the bottom opening of the liquid inlet hole 9. During specific use, when the piston plate 8 moves upward, the blocking plate 20 is pressed by the fertilizer to rotate and open (the pressure force includes the hydraulic pressure generated by the liquid level difference, the reaction force of the liquid fertilizer when the piston plate 8 drives the blocking plate 20 to move upward, and the impact force generated by the stirring blade 7 colliding the liquid fertilizers on both sides of the liquid storage chamber toward the middle position of the liquid storage chamber), and the stirring blade 7 drives the liquid fertilizer to move closer to the middle position, which also allows more liquid fertilizer to enter the spray pipe 5.

[0026] In actual situations, when the amount of liquid fertilizer in the liquid storage chamber becomes less and less, the force acting on the sealing plate 20 becomes smaller, which may cause the sealing plate 20 to be unable to open, resulting in the liquid fertilizer in the liquid storage chamber being unable to enter the spray pipe 5, thereby causing unnecessary waste. Therefore, the following design is provided.

[0027] like Figure 2 , Figure 6 and Figure 8As shown in the figure, an adjusting structure capable of blocking the spray hole 6 is installed in the spray pipe 5. When the piston plate 8 moves upward in the spray pipe 5, the adjusting structure can block the spray hole 6. When the piston plate 8 moves downward in the spray pipe 5, the adjusting structure can open the spray hole 6. The adjusting structure includes an adjusting plug 21, a limiting rod 22 and a return spring 23. The adjusting plug 21 is slidably installed in the spray pipe 5. The diameter of the adjusting plug 21 is the same as the inner diameter of the spray pipe 5. The limiting rod 22 is fixedly installed on the adjusting plug 21. The bottom end of the stopper 21, the limit rod 22 slides through the bottom end of the spray pipe 5, the return spring 23 is sleeved on the limit rod 22, and the two ends of the return spring 23 are respectively fixedly connected to the bottom end of the regulating stopper 21 and the bottom inner wall of the spray pipe 5; the bottom of the limit rod 22 is fixedly connected with a round block, which can abut against the bottom end of the spray pipe 5, thereby limiting the rising height of the limit rod 22 and the regulating stopper 21, and the regulating stopper 21 can cover the spray hole 6. In actual situations, when the piston plate 8 moves upward, The gas and liquid fertilizer in the spray pipe 5 are not squeezed, and the regulating plug 21 is pushed upward in the spray pipe 5 under the rebound action of the return spring 23 until the spray hole 6 is blocked. The air pressure outside the spray pipe 5 cannot drive the regulating plug 21 to move vertically in the spray pipe 5. At this time, the piston plate 8 continues to move upward, and the space in the spray pipe 5 becomes larger. The amount of gas and liquid remains unchanged, forming a negative pressure. Even when the amount of liquid fertilizer in the liquid storage chamber is very small, the blocking plate 20 can be driven by the negative pressure to rotate to open the liquid inlet 9, thereby ensuring that a small amount of liquid fertilizer can also enter the spray pipe 5. The generated negative pressure may also suck the liquid fertilizer at the bottom into the spray pipe 5. After the liquid fertilizer is sucked in, the piston plate 8 moves downward, squeezing the space in the spray pipe 5. The regulating plug 21 moves downward and compresses the return spring 23. The regulating plug 21 opens the spray hole 6, and the liquid fertilizer is sprayed out from the spray hole 6 to complete the fertilization operation, thereby reducing the unnecessary waste caused by the excess liquid fertilizer.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A liquid fertilizer spreading device for agricultural production, It is characterized in that The invention comprises a liquid storage box (1), support frames (2) are fixedly mounted on both sides of the liquid storage box (1), moving wheels (3) are rotatably mounted on the two support frames (2), a liquid storage cavity is provided in the liquid storage box (1), a working shaft (4) is rotatably mounted in the liquid storage cavity, a plurality of stirring blades (7) are circumferentially connected to the outer periphery of the working shaft (4), a transmission mechanism is arranged between the moving wheel (3) and the working shaft (4), and when the moving wheel (3) rotates, the transmission mechanism can convert the rotation of the moving wheel (3) into rotation of the working shaft (4) and the stirring blades (7) in the liquid storage cavity; A spray pipe (5) in communication with the liquid storage chamber is fixedly mounted at the bottom of the liquid storage box (1), spray holes (6) are provided on both sides of the spray pipe (5), a piston plate (8) is slidably mounted in the spray pipe (5), a plurality of liquid inlet holes (9) are penetrated through the piston plate (8), a one-way blocking structure capable of blocking the liquid inlet holes (9) is mounted on the piston plate (8), a linkage mechanism is provided between the working shaft (4) and the piston plate (8), and when the working shaft (4) rotates, the piston plate (8) is moved in a direction such that the working shaft (4) moves ... When the piston plate (8) is in motion, the linkage mechanism can convert the rotational movement of the working shaft (4) into reciprocating sliding movement of the piston plate (8) in the spraying pipe (5); when the piston plate (8) slides upward in the spraying pipe (5), the one-way blocking structure is opened, and the liquid fertilizer in the liquid storage chamber can enter the spraying pipe (5) through the liquid inlet hole (9); when the piston plate (8) slides downward in the spraying pipe (5), the one-way blocking structure is closed, and the liquid fertilizer in the spraying pipe (5) is squeezed out through the spraying hole (6) and sprayed out.

2. A liquid fertilizer application device for agricultural production according to claim 1, It is characterized in that The transmission mechanism comprises a first bevel gear (10), a second bevel gear (11), a transmission shaft (12), a third bevel gear (13) and a fourth bevel gear (14); the moving wheel (3) is rotatably mounted on the support frame (2) via a rotating shaft, a first transmission groove is provided in the support frame (2), the first bevel gear (10) is fixedly mounted on the rotating shaft of the moving wheel (3), the second bevel gear (11) is located in the first transmission groove, and the second bevel gear (11) is meshed with the first bevel gear (10), the transmission shaft (12) ) is rotatably mounted in a support frame (2), one end of the transmission shaft (12) is fixedly connected to the second bevel gear (11), a second transmission groove is also provided in the support frame (2), the third bevel gear (13) is fixedly mounted on the other end of the transmission shaft (12), the third bevel gear (13) is located in the second transmission groove, the fourth bevel gear (14) is located in the second transmission groove, the fourth bevel gear (14) is meshed with the third bevel gear (13), and the fourth bevel gear (14) is fixedly connected to the end of the working shaft (4).

3. A liquid fertilizer application device for agricultural production according to claim 2, It is characterized in that The linkage mechanism comprises an eccentric block (15), an eccentric shaft (16), a connecting rod (17) and a linear rod (18); the middle section of the working shaft (4) located in the liquid storage chamber is in a disconnected state; there are two eccentric blocks (15); the two eccentric blocks (15) are respectively fixedly mounted on the two ends of the disconnected middle of the working shaft (4); the two ends of the eccentric shaft (16) are respectively fixedly connected to the two eccentric blocks (15); the eccentric shaft (16) and the working shaft (4) are arranged in parallel; the axes of the eccentric shaft (16) and the working shaft (4) do not coincide; one end of the connecting rod (17) is rotatably sleeved on the eccentric shaft (16); the other end of the connecting rod (17) is rotatably connected to the linear rod (18); and the end of the linear rod (18) away from the connecting rod (17) is fixedly connected to the piston plate (8).

4. A liquid fertilizer application device for agricultural production according to claim 3, It is characterized in that A stabilizing frame (19) is fixedly mounted at the opening of the spray pipe (5), and the linear rod (18) slides through the stabilizing frame (19).

5. A liquid fertilizer application device for agricultural production according to claim 4, It is characterized in that The number of the stirring blades (7) is multiple, and the multiple stirring blades (7) are symmetrically arranged on the working shaft (4) about the eccentric shaft (16).

6. A liquid fertilizer application device for agricultural production according to claim 5, It is characterized in that The one-way blocking structure comprises a blocking plate (20); a blocking groove rotatably matched with the blocking plate (20) is provided at the bottom of the piston plate (8); the blocking plate (20) is rotatably mounted in the blocking groove via a rotating shaft; a torsion spring is mounted on the rotating shaft of the blocking plate (20); the torsion spring can drive the blocking plate (20) to rotate and block the bottom opening of the liquid inlet hole (9).

7. A liquid fertilizer application device for agricultural production according to claim 6, It is characterized in that An adjusting structure capable of blocking the spray hole (6) is installed in the spray pipe (5); when the piston plate (8) moves upward in the spray pipe (5), the adjusting structure can block the spray hole (6); when the piston plate (8) moves downward in the spray pipe (5), the adjusting structure can open the spray hole (6).

8. A liquid fertilizer application device for agricultural production according to claim 7, It is characterized in that The regulating structure comprises a regulating plug (21), a limiting rod (22) and a return spring (23); the regulating plug (21) is slidably mounted in the spray pipe (5); the limiting rod (22) is fixedly mounted on the bottom end of the regulating plug (21); the limiting rod (22) slides through the bottom end of the spray pipe (5); the return spring (23) is sleeved on the limiting rod (22); and two ends of the return spring (23) are respectively fixedly connected to the bottom end of the regulating plug (21) and the bottom inner wall of the spray pipe (5); The regulating plug (21) is capable of covering the spray hole (6).

9. A liquid fertilizer spreading device for agricultural production according to claim 1, It is characterized in that The liquid storage tank (1) is provided with a feed port; a handrail (24) is fixedly installed on one side of the liquid storage tank (1); and a support leg (25) is fixedly connected to the bottom of one side of the liquid storage tank (1) close to the handrail (24).

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