Quantitative mixing equipment for producing pesticide water dispersible granules

Abstract

The invention discloses quantitative mixing equipment for producing pesticide water dispersible granules, relates to the technical field of water dispersible granule production equipment, and aims to overcome the defects that materials are inconvenient to weigh and low in weighing accuracy, and the material proportion error is large due to the fact that solid materials are affected with damp. When the weighing plate weighs the solid material, the dosage needed by the solid is recorded in the solid meter, when the weighing plate weighs the solid material to a given value, the electromagnetic valve at the position of the discharging opening of the solid containing hopper is closed, the liquid meter is used for recording the dosage needed by the liquid, manual weighing and proportioning are not needed, the material weighing is accurate, and the working efficiency is improved. The fan can guide dry gas into the drying box, and the flowing gas can dry materials in the drying box, so that wet materials are prevented from being adhered to the interior of equipment, and meanwhile, the situation that the wet materials cause large errors in weighing of solid materials, and the production quality of water dispersible granules is affected is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water dispersible granule production equipment, and particularly relates to a quantitative mixing equipment for producing pesticide water dispersible granules. BACKGROUND

[0002] Water dispersible granules are also known as dry suspending agents or granular wettable powders. Once put into water, the water dispersible granules can quickly disintegrate and disperse to form a high-suspension solid-liquid dispersion system. The water dispersible granules are a new dosage form developed on the basis of wettable powders and suspending agents. The water dispersible granules have the characteristics of good dispersibility, high suspension rate, good stability, and convenient use. The water dispersible granules avoid the shortcomings of wettable powders, such as dust generation, and the shortcomings of suspending agents, such as inconvenient packaging and transportation, easy precipitation, caking, poor flowability, and wall sticking during storage. The production methods include spray granulation, suspension granulation, extrusion granulation, high-intensity mixing granulation, and fluidized bed granulation.

[0003] The water dispersible granules need to be mixed with multiple materials during the production process. However, the existing mixing equipment has the following problems:

[0004] 1. The mixing materials of the water dispersible granules include solid materials and liquid materials. In the current preparation process, the materials need to be weighed and quantitatively put in according to the proportion by manual operation. The operation is complex, and the weighing accuracy is low.

[0005] 2. Some solid materials have strong water absorption. The wet materials will stick to the inner wall of the equipment and cause equipment blockage, which is not convenient to clean. In addition, the weight of the wet solid materials increases, which causes large material weighing error and deviation of the mixing ratio of the materials, thereby affecting the production quality of the water dispersible granules. SUMMARY

[0006] The present application aims to solve the problems of inconvenient material weighing, low material weighing accuracy, and large material ratio deviation caused by wet solid materials, and provides a quantitative mixing equipment for producing pesticide water dispersible granules.

[0007] To achieve the above purpose, the present application adopts the following technical scheme:

[0008] A quantitative mixing device for producing water-dispersible granules of pesticides includes a housing. A metering box is fixedly connected to one side of the housing. The inner cavity of the metering box is provided with a solid holding hopper. The discharge port of the solid holding hopper is provided with a solenoid valve. The inner cavity of the metering box is provided with a solid metering mechanism. The solid metering mechanism includes a material discharge trough. A weighing plate is provided at the bottom end of the material discharge trough. The weighing plate is fixedly connected to the bottom end of the inner cavity of the metering box. A solid metering device is fixedly connected to the inner cavity of the metering box. A liquid metering mechanism is provided on the other side of the housing. The liquid metering mechanism includes a metering cylinder fixedly connected to the top end of the housing. A scale bar is provided at the outer end of the metering cylinder. A liquid replenishment pipe is fixedly connected to the top end of the metering cylinder. A conduit is fixedly connected to the bottom end of the metering cylinder. A solenoid valve is fixedly connected to the outer end of the conduit. The other end of the conduit extends through the housing into the interior. A liquid metering device is fixedly connected to one side of the housing.

[0009] A drying chamber is fixedly connected to the top of the metering box. A fan is fixedly connected to one side of the drying chamber. An air pipe is fixedly connected to the outer end of the fan. The other end of the air pipe is fixedly connected to the outer end of the drying chamber and is in communication with the drying chamber. A ventilated plate is fixedly connected to the outer end of the drying chamber and is in communication with the drying chamber.

[0010] Preferably, the solid metering mechanism further includes an electric push cylinder, which is fixedly connected to the inner cavity of the metering box. An electric push rod is slidably connected to the inner cavity of the electric push cylinder, and the electric push rod is slidably connected to the metering box. A push plate is fixedly connected to the other end of the electric push rod, and the push plate is slidably connected to the weighing plate. A discharge port is provided between the outer shell and the metering box, and a rotating plate is rotatably connected to the inner cavity of the discharge port. A torsion spring is fixedly connected between the rotating plate and the side wall of the metering box.

[0011] Preferably, there are two measuring boxes and two measuring cylinders, which are symmetrically arranged on both sides of the outer shell.

[0012] Preferably, a homogenizing chamber is fixedly connected to the inner cavity of the outer shell, a moisture-proof pipe is fixedly connected between the homogenizing chamber and the outer shell, the moisture-proof pipe is positioned corresponding to the discharge port, and the other end of the conduit is fixedly connected to the homogenizing chamber. A connecting pipe is fixedly connected to the top of the homogenizing chamber, the connecting pipe extends through the outer shell to the outside, and a solenoid valve is fixedly connected to the outer end of the connecting pipe. A discharge pipe is fixedly connected to the bottom of the homogenizing chamber, and the discharge pipe extends through the outer shell to the outside.

[0013] Preferably, the top of the outer shell is provided with a stirring mechanism. The stirring mechanism includes a housing fixedly connected to the center of the top of the outer shell. A first motor is fixedly connected to the inner cavity of the housing. A first stirring rod is fixedly connected to the shaft of the first motor. The first stirring rod extends through the mixing box into the interior. A first stirring blade is fixedly connected to the outer end of the first stirring rod. There are two first stirring blades, and the two first stirring blades are symmetrical about the first stirring rod.

[0014] Preferably, a drive wheel is fixedly connected to the outer end of the first stirring rod, and driven wheels are symmetrically engaged on both sides of the drive wheel. The drive wheel and the driven wheels are located between the outer shell and the mixing box. A second stirring rod is fixedly connected to one side of the driven wheel, and a second stirring blade is fixedly connected to the outer end of the second stirring rod. The second stirring blade is located between the two first stirring blades.

[0015] Preferably, a feed hopper is fixedly connected to one side of the drying chamber, the feed hopper is in communication with the drying chamber, and a cover plate is rotatably connected to the top of the feed hopper. A torsion spring is fixedly connected between the cover plate and the feed hopper. A second motor is fixedly connected to the outer end of the drying chamber, and a drying plate is fixedly connected to the shaft of the second motor. The drying plate is an arc-shaped plate with three fan blades. The drying plate is rotatably connected to the inner cavity of the drying chamber. The inner cavity of the drying chamber has a circular cross-section, and a through hole is provided at the bottom of the drying chamber. A controller is fixedly connected to one side of the bottom of the drying chamber, and a clamping plate is fixedly connected to one end of the controller. The clamping plate is rotatably connected to the through hole.

[0016] Preferably, a third motor is fixedly connected to the outside of the metering box, and a roller is fixedly connected to the outer end of the third motor. There are two rollers, which are rotatably connected to the inner cavity of the metering box. Support plates are symmetrically fixedly connected to both ends of the outer shell.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] In this invention, a quantitative mixing device for producing water-dispersible granules of pesticides is provided. A solid metering mechanism records the required dosage of the solid material in a solid metering device. When the weighing plate reaches a given value for the solid material, the solenoid valve at the discharge port of the solid hopper closes. A liquid metering device records the required dosage of the liquid and controls the opening and closing of the conduit via a solenoid valve. This eliminates the need for manual weighing and proportioning, simplifying operation while ensuring accurate material weighing. A fan expels dry gas through a pipe into the drying chamber, drying the materials inside and preventing damp materials from adhering to the equipment and causing blockages. This drying process also avoids significant errors in the weighing of solid materials caused by damp materials, which could affect the production quality of the water-dispersible granules.

[0019] The driving wheel drives two driven wheels to rotate. The first and second stirring blades, which rotate in opposite directions, enhance the mixing efficiency of the materials and accelerate the dissolution rate of the solid materials. The second motor drives the drying plate to rotate in the drying chamber, increasing the contact efficiency between the airflow and the solid materials, thereby improving the drying efficiency of the solid materials. In addition, the drying plate can break up the clumps of solid materials and prevent them from getting damp and condensing. The solid materials are then crushed by two rollers, and the resulting powder dissolves in the liquid faster, improving the production efficiency of water-dispersible granules. Attached Figure Description

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the structure of a quantitative mixing device for producing water-dispersible granules of pesticides proposed in this invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the metering box and drying box proposed in this invention;

[0023] Figure 3 This is a schematic diagram of the outer shell and the homogenizing box proposed in this invention;

[0024] Figure 4 This is a partial structural schematic diagram of the stirring mechanism proposed in this invention.

[0025] In the diagram: 1. Outer shell; 2. Measuring box; 3. Solid container hopper; 4. Solid metering mechanism; 401. Feed chute; 402. Weighing plate; 403. Solid metering device; 404. Electric push cylinder; 405. Electric push rod; 406. Push plate; 407. Discharge port; 408. Rotating plate; 5. Liquid metering mechanism; 501. Measuring cylinder; 502. Liquid replenishment pipe; 503. Conduit; 504. Liquid metering device; 6. Mixing tank; 7. Moisture-proof pipe; 8. Connecting pipe; 9. Discharge pipe; 10. Mixer Structure; 1001, Casing; 1002, First Motor; 1003, First Stirring Rod; 1004, First Stirring Blade; 1005, Drive Wheel; 1006, Driven Wheel; 1007, Second Stirring Rod; 1008, Second Stirring Blade; 11, Drying Chamber; 12, Feed Hopper; 13, Cover Plate; 14, Second Motor; 15, Drying Plate; 16, Controller; 17, Clamping Plate; 18, Fan; 19, Air Pipe; 20, Ventilation Plate; 21, Third Motor; 22, Grinding Roller; 23, Support Plate. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] Example 1

[0028] Reference Figures 1-4A quantitative mixing device for producing water-dispersible granules of pesticides includes a housing 1. A metering box 2 is fixedly connected to one side of the housing 1. The inner cavity of the metering box 2 is equipped with a solid container 3. The discharge port of the solid container 3 is equipped with a solenoid valve. The inner cavity of the metering box 2 is also equipped with a solid metering mechanism 4. The solid metering mechanism 4 includes a discharge chute 401. The bottom end of the discharge chute 401 is equipped with a weighing plate 402, which is fixedly connected to the bottom end of the inner cavity of the metering box 2. A solid metering device 403 is fixedly connected to the inner cavity of the metering box 2. Solid material falls into the solid container 3 in the metering box 2. When the material ratio value is input into the solid metering device 403, the solenoid valve at the discharge port of the solid container 3 opens, and the solid material falls from the discharge chute 401 to the top of the weighing plate 402. When the weight of the solid material reaches a given value, the solenoid valve closes, and the solid container 3 stops discharging. The other side of the housing 1 is equipped with a liquid metering mechanism 5. The weighing mechanism 5 includes a measuring cylinder 501 fixedly connected to the top of the outer shell 1. The outer end of the measuring cylinder 501 is provided with a scale bar, and a replenishing pipe 502 is fixedly connected to the top of the measuring cylinder 501. A conduit 503 is fixedly connected to the bottom of the measuring cylinder 501. A solenoid valve is fixedly connected to the outer end of the conduit 503, and the other end of the conduit 503 extends through the outer shell 1 into the interior. A liquid metering device 504 is fixedly connected to one side of the outer shell 1. The required liquid dosage is input into the liquid metering device 504. At this time, the solenoid valve at the outer end of the conduit 503 opens, and the liquid in the measuring cylinder 501 flows out. When the amount of liquid discharged reaches the given value, the solenoid valve at the outer end of the conduit 503 closes. The scale bar makes it easy to observe the remaining amount of liquid in the measuring cylinder 501. The replenishing pipe 502 can replenish the liquid in the measuring cylinder 501 in a timely manner. By weighing the material through the weighing device, the weighing of the material is more accurate and no manual operation is required, reducing labor costs.A drying chamber 11 is fixedly connected to the top of the metering box 2. A fan 18 is fixedly connected to one side of the drying chamber 11. An air pipe 19 is fixedly connected to the outer end of the fan 18. The other end of the air pipe 19 is fixedly connected to the outer end of the drying chamber 11, and the air pipe 19 is in communication with the drying chamber 11. A vent plate 20 is fixedly connected to the outer end of the drying chamber 11, and the vent plate 20 is in communication with the drying chamber 11. Since the solid material has strong water absorption, the fan 18 discharges outside air into the drying chamber 11 through the air pipe 19. Inside the cavity, gas is discharged from the vent plate 20 at the outer end of the drying chamber 11. The flowing gas accelerates the drying speed of the solid material, prevents damp material from sticking to the inner wall of the equipment, and also prevents damp material from causing large deviations in the weighing of the solid material, affecting the production quality of water-dispersible granules. The solid metering mechanism 4 also includes an electric push cylinder 404, which is fixedly connected to the inner cavity of the metering chamber 2. An electric push rod 405 is slidably connected to the inner cavity of the electric push cylinder 404. The electric push rod 405 is slidably connected to the metering chamber 2. A push plate 406 is fixedly connected to the other end of the electric push rod 405. The push plate 406 is slidably connected to the weighing plate 402. A discharge port 407 is provided between the outer shell 1 and the metering chamber 2. A rotating plate 408 is rotatably connected to the inner cavity of the discharge port 407. A torsion spring is fixedly connected between the rotating plate 408 and the side wall of the metering chamber 2. When the solid material at the top of the weighing plate 402 reaches the required dosage, the electric push cylinder 404 drives the electric push rod 405 to extend. The pusher plate 406 pushes the solid material towards the discharge port 407. As the resistance between the material and the rotating plate 408 increases, the rotating plate 408 flips inside the discharge port 407, allowing the solid material to enter the homogenizing box 6. Two metering boxes 2 and two metering cylinders 501 are provided, symmetrically arranged on both sides of the outer shell 1. Different materials can be placed in the two metering boxes 2 and two metering cylinders 501 to prevent mixing and ensure accurate dosage for different materials.

[0029] Example 2

[0030] Improvements based on Embodiment 1: A homogenizing tank 6 is fixedly connected to the inner cavity of the outer shell 1. A moisture-proof pipe 7 is fixedly connected between the homogenizing tank 6 and the outer shell 1. The moisture-proof pipe 7 is positioned corresponding to the discharge port 407. After the rotating plate 408 is flipped, the material enters the moisture-proof pipe 7. The inclined moisture-proof pipe 7 facilitates material discharge. After the push plate 406 is retracted, the torsion spring between the rotating plate 408 and the metering box 2 drives the rotating plate 408 to seal the discharge port 407, preventing liquid in the homogenizing tank 6 from entering the interior of the metering box 2 and causing the material to become damp. The other end of the conduit 503 is fixedly connected to the homogenizing tank 6. A connecting pipe 8 is fixedly connected to the top of the homogenizing tank 6. The connecting pipe 8 extends through the outer shell 1 to the outside, and a solenoid valve is fixedly connected to the outer end of the connecting pipe 8. 8 is used to transport mixed liquids such as water. A discharge pipe 9 is fixedly connected to the bottom end of the mixing tank 6. The discharge pipe 9 extends through the outer shell 1 to the outside and is used to discharge the mixed liquid from the mixing tank 6. A stirring mechanism 10 is provided at the top of the outer shell 1. The stirring mechanism 10 includes a housing 1001 fixedly connected to the center of the top of the outer shell 1. A first motor 1002 is fixedly connected to the inner cavity of the housing 1001. A first stirring rod 1003 is fixedly connected to the shaft of the first motor 1002. The first stirring rod 1003 extends through the mixing tank 6 to the inside, and a first stirring blade 1004 is fixedly connected to the outer end of the first stirring rod 1003. Two first stirring blades 1004 are provided, and the two first stirring blades 1004 are positioned relative to the first stirring rod 1003. It is stated that when the material enters the homogenizing tank 6, the first motor 1002 drives the first stirring rod 1003 to rotate inside the homogenizing tank 6. At this time, the two first stirring blades 1004 at the outer end of the first stirring rod 1003 agitate the liquid in the homogenizing tank 6. The outer end of the first stirring rod 1003 is fixedly connected to the driving wheel 1005, and the two sides of the driving wheel 1005 are symmetrically meshed with driven wheels 1006. The driving wheel 1005 and the driven wheels 1006 are located between the outer shell 1 and the homogenizing tank 6. A second stirring rod 1007 is fixedly connected to one side of the driven wheel 1006, and a second stirring blade 1008 is fixedly connected to the outer end of the second stirring rod 1007. The second stirring blade 1008 is located between the two first stirring blades 1004. The first stirring rod 1003 rotates... At this time, the driving wheel 1005 at the outer end of the first stirring rod 1003 drives the driven wheels 1006 on both sides to rotate. At this time, the driven wheels 1006 drive the second stirring blade 1008 at the outer end of the second stirring rod 1007 to rotate inside the homogenizing box 6. The first stirring blade 1004 and the second stirring blade 1008 rotating in opposite directions cause the liquid inside the homogenizing box 6 to tumble irregularly, which accelerates the dissolution speed of solid materials and enhances the mixing efficiency between multiple materials. A feed hopper 12 is fixedly connected to one side of the drying box 11. The feed hopper 12 is connected to the drying box 11, and a cover plate 13 is rotatably connected to the top of the feed hopper 12. A torsion spring is fixedly connected between the cover plate 13 and the feed hopper 12. A second motor 14 is fixedly connected to the outer end of the drying box 11.A drying plate 15 is fixedly connected to the shaft of the second motor 14. The drying plate 15 is an arc-shaped plate with three blades. The drying plate 15 is rotatably connected to the inner cavity of the drying chamber 11. Moist materials easily clump together. The second motor 14 drives the three-bladed drying plate 15 to rotate inside the drying chamber 11, breaking up the solid material and preventing clumping. The inner cavity of the drying chamber 11 has a circular cross-section, and a through hole is provided at the bottom. A controller 16 is fixedly connected to one side of the bottom of the drying chamber 11. A clamping plate 17 is fixedly connected to one end of the controller 16, and the clamping plate 17 is rotatably connected to the through hole. After the material is dried and broken up, the controller 16 drives the card plate 17 to flip, allowing the material in the drying chamber 11 to enter the metering chamber 2. A third motor 21 is fixedly connected to the outside of the metering chamber 2, and two rollers 22 are fixedly connected to the outer end of the third motor 21. These two rollers 22 are rotatably connected to the inner cavity of the metering chamber 2. When the solid material enters the metering chamber 2, the third motor 21 drives the two rollers 22 to rotate, crushing the solid material into fine powder and accelerating the dissolution rate. Support plates 23 are symmetrically fixedly connected to both ends of the outer shell 1, supporting the outer shell 1 and facilitating the installation of the pipe body at the bottom of the discharge pipe 9.

[0031] In this invention, solid material falls into the solid container 3 in the metering box 2. The material ratio is input into the solid metering device 403. At this time, the solenoid valve at the discharge port of the solid container 3 opens, and the solid material falls from the discharge chute 401 onto the top of the weighing plate 402. When the weight of the solid material reaches a given value, the solenoid valve closes, and the solid container 3 stops discharging. The required liquid dosage is then input into the liquid metering device 504. At this time, the solenoid valve at the outer end of the conduit 503 opens, and the liquid in the metering cylinder 501 flows out. When the discharged liquid dosage reaches a given value, the solenoid valve at the outer end of the conduit 503 closes. The scale bar facilitates observation of the remaining liquid in the metering cylinder 501, and the replenishment pipe 502 can promptly replenish the liquid in the metering cylinder 501. Liquid is replenished, and the material is weighed using a weighing device, making the weighing more accurate and eliminating the need for manual operation, thus reducing labor costs. Since the solid material is highly absorbent, the fan 18 draws external air into the inner cavity of the drying chamber 11 through the air pipe 19. The gas then exits from the vent plate 20 at the outer end of the drying chamber 11. The flowing gas accelerates the drying speed of the solid material, preventing damp material from sticking to the inner wall of the equipment and preventing significant deviations in the weighing of the solid material caused by damp material, which could affect the production quality of the water-dispersible granules. When the solid material at the top of the weighing plate 402 reaches the required dosage, the electric push cylinder 404 drives the electric push rod 405 to extend. At this time, the push plate 406 pushes the solid material towards the discharge port 407. As the resistance between the material and the rotating plate 408 increases, the rotating plate 408 flips inside the discharge port 407, allowing the solid material to enter the homogenizing tank 6. The two metering tanks 2 and two metering cylinders 501 can hold different materials, preventing them from mixing and affecting the accuracy of the required dosage. After the rotating plate 408 flips, the material enters the moisture-proof pipe 7. The inclined moisture-proof pipe 7 facilitates material discharge. After the push plate 406 is retracted, the torsion spring between the rotating plate 408 and the metering tank 2 causes the rotating plate 408 to seal the discharge port 407, preventing liquid from the homogenizing tank 6 from entering the metering tank 2 and causing the material to become damp. The connecting pipe 8 is used to transport mixed liquids such as water, and the discharge pipe 9 is used to discharge the mixed liquid from the homogenizing tank 6. When the material enters... After entering the homogenizing tank 6, the first motor 1002 drives the first stirring rod 1003 to rotate inside the homogenizing tank 6. At this time, the two first stirring blades 1004 at the outer end of the first stirring rod 1003 agitate the liquid in the homogenizing tank 6. When the first stirring rod 1003 rotates, the driving wheel 1005 at the outer end of the first stirring rod 1003 drives the driven wheels 1006 on both sides to rotate. At this time, the driven wheels 1006 drive the second stirring blade 1008 at the outer end of the second stirring rod 1007 to rotate inside the homogenizing tank 6. The opposing rotation of the first stirring blade 1004 and the second stirring blade 1008 causes the liquid inside the homogenizing tank 6 to tumble irregularly, which accelerates the dissolution rate of solid materials and enhances the mixing efficiency between multiple materials. Wet materials are prone to coagulate into lumps.At this time, the second motor 14 drives the three-bladed drying plate 15 to rotate inside the drying chamber 11. The drying plate 15 breaks up the solid material, thus preventing it from clumping. After the solid material is dried and broken up, the controller 16 drives the clamping plate 17 to rotate, allowing the material in the drying chamber 11 to enter the metering chamber 2. Once the solid material enters the metering chamber 2, the third motor 21 drives the two grinding rollers 22 to rotate. The grinding rollers 22 crush the solid material into fine powder, accelerating the dissolution rate of the solid material. The support plate 23 supports the outer shell 1, facilitating the installation of the pipe body at the bottom of the discharge pipe 9.

[0032] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A metering mixing apparatus for producing an agricultural chemical water dispersible granule, comprising a housing (1), characterized in that: One side of the shell (1) is fixedly connected with a metering box (2), the inner cavity of the metering box (2) is provided with a solid holding hopper (3), the discharge port of the solid holding hopper (3) is provided with a solenoid valve, and the inner cavity of the metering box (2) is provided with a solid metering mechanism (4), the solid metering mechanism (4) comprises a blanking groove (401), the bottom end of the blanking groove (401) is provided with a weighing plate (402), the weighing plate (402) is fixedly connected to the inner cavity bottom end of the metering box (2), the inner cavity of the metering box (2) is fixedly connected with a solid metering device (403), the other side of the shell (1) is provided with a liquid metering mechanism (5), the liquid metering mechanism (5) comprises a metering cylinder (501) fixedly connected to the top end of the shell (1), the outer end of the metering cylinder (501) is provided with a scale bar, and the top end of the metering cylinder (501) is fixedly connected with a liquid supplementing pipe (502), the bottom end of the metering cylinder (501) is fixedly connected with a conduit (503), the outer end of the conduit (503) is fixedly connected with a solenoid valve, and the other end of the conduit (503) extends through the shell (1) to the inside, and one side of the shell (1) is fixedly connected with a liquid metering device (504); The top end of the metering box (2) is fixedly connected with a drying box (11), one side of the drying box (11) is fixedly connected with a fan (18), the outer end of the fan (18) is fixedly connected with an air pipe (19), the other end of the air pipe (19) is fixedly connected to the outer end of the drying box (11), and the air pipe (19) is in communication with the drying box (11), and the outer end of the drying box (11) is fixedly connected with a breathable plate (20), and the breathable plate (20) is in communication with the drying box (11).

2. The constant weight mixing apparatus for producing an agricultural chemical water dispersible granule according to claim 1, characterized by The solid metering mechanism (4) further comprises an electric push cylinder (404) fixedly connected in the inner cavity of the metering box (2), the inner cavity of the electric push cylinder (404) is slidably connected with an electric push rod (405), the electric push rod (405) is slidably connected between the metering box (2), the other end of the electric push rod (405) is fixedly connected with a push plate (406), the push plate (406) is slidably connected between the weighing plate (402), and the shell (1) and the metering box (2) are provided with a discharge port (407), the inner cavity of the discharge port (407) is rotatably connected with a rotating plate (408), and the rotating plate (408) and the side wall of the metering box (2) are fixedly connected with a torsion spring.

3. The constant weight mixing apparatus for producing an agricultural chemical water dispersible granule according to claim 1, wherein The metering box (2) and the metering cylinder (501) are both provided with two, and the two metering boxes (2) and the metering cylinders (501) are symmetrically arranged on both sides of the shell (1).

4. The constant weight mixing apparatus for producing an agricultural chemical water dispersible granule according to claim 2, wherein The inner cavity of the shell (1) is fixedly connected with a uniform mixing box (6), a moisture-proof pipe (7) is fixedly connected between the uniform mixing box (6) and the shell (1), the moisture-proof pipe (7) corresponds in position to the discharge port (407), one end of the pipe (503) is fixedly connected with the uniform mixing box (6), the top end of the uniform mixing box (6) is fixedly connected with a connecting pipe (8), the connecting pipe (8) extends through the shell (1) to the outside, the outer end of the connecting pipe (8) is fixedly connected with a solenoid valve, the bottom end of the uniform mixing box (6) is fixedly connected with a discharge pipe (9), the discharge pipe (9) extends through the shell (1) to the outside.

5. The constant weight mixing apparatus for producing an agricultural chemical water dispersible granule according to claim 4, characterized in that, The top end of the shell (1) is provided with a stirring mechanism (10), the stirring mechanism (10) comprises a machine shell (1001) fixedly connected to the top end center position of the shell (1), the inner cavity of the machine shell (1001) is fixedly connected with a first motor (1002), the machine shaft position of the first motor (1002) is fixedly connected with a first stirring rod (1003), the first stirring rod (1003) extends through the uniform mixing box (6) to the inside, and the outer end of the first stirring rod (1003) is fixedly connected with a first stirring blade (1004), the first stirring blade (1004) is provided with two, and the two first stirring blades (1004) are symmetrical about the first stirring rod (1003).

6. The constant weight mixing apparatus for producing an agricultural chemical water dispersible granule according to claim 5, wherein The outer end of the first stirring rod (1003) is fixedly connected with a driving wheel (1005), the two sides of the driving wheel (1005) are symmetrically engaged with a driven wheel (1006), and the driving wheel (1005) and the driven wheel (1006) are arranged between the shell (1) and the uniform mixing box (6), one side of the driven wheel (1006) is fixedly connected with a second stirring rod (1007), the outer end of the second stirring rod (1007) is fixedly connected with a second stirring blade (1008), and the second stirring blade (1008) is arranged between the two first stirring blades (1004).

7. The constant weighing and mixing apparatus for producing the water dispersible granules of the agricultural chemicals according to claim 1, wherein One side of the drying box (11) is fixedly connected with a feeding hopper (12), the feeding hopper (12) is communicated with the drying box (11), the top end of the feeding hopper (12) is rotatably connected with a cover plate (13), a torsion spring is fixedly connected between the cover plate (13) and the feeding hopper (12), the outer end of the drying box (11) is fixedly connected with a second motor (14), the machine shaft position of the second motor (14) is fixedly connected with a drying plate (15), the drying plate (15) is an arc-shaped plate, the drying plate (15) is provided with three blades, the drying plate (15) is rotatably connected in the inner cavity of the drying box (11), the inner cavity of the drying box (11) is circular in cross section, the bottom end of the drying box (11) is provided with a through hole, one side of the bottom end of the drying box (11) is fixedly connected with a controller (16), one end of the controller (16) is fixedly connected with a clamping plate (17), and the clamping plate (17) is rotatably connected with the through hole.

8. The constant weighing and mixing apparatus for producing the water dispersible granules of the agricultural chemicals according to claim 1, wherein The outer side of the metering box (2) is fixedly connected with a third motor (21), the outer end of the third motor (21) is fixedly connected with a roller (22), the roller (22) is provided with two, the two rollers (22) are rotatably connected in the inner cavity of the metering box (2), and the both ends of the shell (1) are fixedly connected with a support plate (23) in a symmetrical manner.

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