An automated dosing device
By combining the design of the limiting ring, sealing ring, electric heating belt and spiral blades, the problems of moisture absorption and inaccurate feeding of traditional dosing equipment are solved, realizing the drying stability and accurate feeding of the agent, and improving the quality and efficiency of industrial production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SYMGREEN BEIJING ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional dosing equipment suffers from poor sealing performance, which leads to the chemicals becoming damp and clumping, and inaccurate dispensing, making it difficult to meet the requirements of modern industrial production for chemical quality and dosage.
The combination of a limiting ring and a sealing ring, along with an electric heating belt and spiral blades, ensures that the hopper is dry and at a constant temperature. The feed rate is controlled by the pitch of the spiral blades, and a water spray mechanism is used to prevent the agent from sticking together, thus achieving precise dosing.
It effectively isolates external moisture, keeps the medicine dry, ensures stable medicine quality, enables precise feeding and smooth transfer of medicine, and improves work efficiency and feeding accuracy.
Smart Images
Figure CN224442814U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dosing equipment technology, specifically to an automated dosing equipment. Background Technology
[0002] In modern industrial and water treatment processes, precise chemical dosing is a crucial step in ensuring process effectiveness and quality. The accuracy and stability of dosing directly impact product quality, production efficiency, and environmental safety. Traditional dosing equipment has numerous problems and struggles to meet the demands of modern industrial production for precise dosing and stable chemical quality.
[0003] In traditional dosing equipment, the sealing performance of the silos is often poor. Silos are typically equipped with covers for sealing, but the sealing structure between the cover and the silo is not perfect. Moisture in the air can easily enter the silo through the gaps between the cover and the silo. When the silo contains powdered chemicals, this moisture intrusion can cause the chemicals to become damp. Damp chemicals may clump or deteriorate, severely affecting their quality and stability. Furthermore, traditional dosing equipment lacks effective environmental control measures. In natural environments, the humidity and temperature inside the silo fluctuate with changes in the external environment. Excessive humidity can cause powdered chemicals to absorb moisture, while large temperature fluctuations can trigger chemical reactions or changes in the physical properties of the chemicals, leading to a decline in performance. Traditional dosing equipment struggles to achieve dosage control during the dispensing process. The unreasonable structural design of the dispensing device results in large fluctuations in the amount dispensed each time, failing to meet the dosage requirements of the production process. Therefore, an automated dosing device is proposed. Utility Model Content
[0004] The purpose of this invention is to provide an automated dosing device to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: an automated dosing device, comprising a housing, wherein a maturation chamber, a storage chamber and a dissolving chamber are respectively provided inside the housing, a hopper is provided on the top of the housing, and a horizontal plate located on one side of the hopper is slidably connected to one side of the top of the housing via a slide rail;
[0006] The top of the silo is equipped with a shielding component; the lower side of the silo is equipped with a dosing component;
[0007] The shielding assembly includes a cover plate, a sealing ring is fixed to the top of the inner wall of the cover plate, and a limit ring is connected to one side of the top of the hopper.
[0008] The dosing assembly includes a feeding pipe and a water spraying mechanism. A second motor is fixed to one end of the feeding pipe, and a spiral blade is fixed to the output shaft end of the second motor. A discharge rack is fixed to the other end of the feeding pipe, and a discharge pipe is connected to the bottom of the silo on one side of the top of the feeding pipe.
[0009] Preferably, the above-mentioned curing chamber, storage chamber and dissolving chamber are respectively provided with partitions fixed to the inner wall of the box, and when the outer side of the limiting ring is connected to the inner side of the cover plate, the bottom of the limiting ring abuts against the bottom of the sealing ring.
[0010] Preferably, the outer side of the spiral blades is rotatably connected to one side of the conveying pipe and the discharge rack, and the bottom of the conveying pipe is fixed to the top of the box.
[0011] Preferably, the spiral blade surface is provided with a pitch, the width of which is the same as the width of the inner wall of the discharge rack.
[0012] Preferably, the water spraying mechanism includes a guide plate, a water spray pipe is fixed on one side of the top of the guide plate, a plurality of water spray holes are opened at the bottom of the water spray pipe, the angle between the guide plate and the horizontal plane is 155°-165°, the angle between the center line of the water spray hole and the guide plate is 45°-55°, and the diameter of the water spray hole is 0.9mm-1.1mm.
[0013] Preferably, one side of the guide plate is fixed to the top of the inner wall of the melting chamber, the inner diameter of the discharge pipe is φ51.75mm, and a protective box located outside the discharge rack is fixed to one side of the top of the box.
[0014] Preferably, the hopper is fitted with a jacket on its outer side, and an electric heating belt located inside the jacket is wound around the outer side of the hopper.
[0015] Preferably, the dissolving chamber is connected to a water pipe on one side, and a flow meter, a solenoid valve and a pressure gauge are installed on the water pipe, and the inlet end of the spray pipe is connected to the water pipe.
[0016] Preferably, the top of the box is equipped with three first motors, and the output shaft of each first motor is fixed with a first stirring blade. The first stirring blades are located inside the ripening chamber, the storage chamber and the dissolving chamber, respectively.
[0017] Preferably, the above-mentioned: a third motor is fixed to the top of the hopper, a second stirring blade located inside the hopper is fixed to the output shaft end of the third motor, a control box is installed on one side of the top of the box, a controller is installed inside the control box, and the signal output terminal of the controller is electrically connected to the input terminals of the first motor, the second motor, the third motor, the solenoid valve, and the electric heating belt, respectively.
[0018] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:
[0019] 1. The limiting ring is connected to the inside of the cover plate and is completely embedded in the sealing ring, which effectively isolates the moisture in the air from entering the silo through the cover plate, providing a relatively dry environment for the medicine in the silo, which helps to maintain the quality and stability of the medicine.
[0020] Second, by pulling the horizontal plate to one side so that one end of the plate protrudes from one side of the box, workers can easily place the medicine on the top of the horizontal plate, and then add the medicine into the inner side of the hopper through the limiting ring, which simplifies the medicine addition process and improves work efficiency.
[0021] Third, the electric heating belt generates heat when energized, providing a dry and constant temperature environment inside the silo. This helps prevent adverse reactions of powdered drugs due to changes in humidity or temperature, thereby maintaining the original properties and stability of the drugs.
[0022] Fourth, the second motor drives the spiral blades to rotate, and the pitch of the screw achieves uniform and accurate delivery of the agent, ensuring that the amount of material fed each time is relatively fixed, which improves the accuracy and stability of the feeding. The space between the spiral blades and the conveying pipe is filled with the agent, sealing the silo into a closed space, effectively blocking the water vapor evaporated from the dissolving chamber from entering the silo, which helps to maintain a dry environment for the agent in the silo and prevents the agent from deteriorating or becoming ineffective due to moisture.
[0023] 5. When the dry agent adheres to the guide plate, the water spray holes on the water spray pipe of the water spray mechanism can flush the guide plate and wash the agent into the dissolving chamber, effectively solving the problem of the agent adhering to the guide plate and ensuring the smooth transfer of the agent. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a first-view structural diagram of the present invention;
[0026] Figure 2 This is a schematic diagram of the second-view structure of the present invention;
[0027] Figure 3 This is a schematic diagram of the structure of the first stirring blade of this utility model;
[0028] Figure 4 This is a schematic diagram of the structure of the guide plate of this utility model;
[0029] Figure 5This is a schematic diagram of the structure of the electric heating element of this utility model;
[0030] Figure 6 This is a schematic diagram of the structure of the water spray pipe of this utility model;
[0031] Figure 7 This is a schematic diagram of the structure of the spiral blade of this utility model;
[0032] Figure 8 This is a schematic diagram of the sealing ring structure of this utility model.
[0033] Explanation of reference numerals in the attached drawings: 1. Box body; 2. Hopper; 3. Shielding assembly; 31. Cover plate; 32. Limiting ring; 33. Sealing ring; 4. First motor; 5. Dosing assembly; 51. Conveying pipe; 52. Guide plate; 53. Discharge pipe; 54. Second motor; 55. Water spray pipe; 56. Discharge rack; 57. Water spray hole; 58. Spiral blade; 59. Pitch; 6. Water pipe; 7. Third motor; 8. Flow meter; 9. Solenoid valve; 10. Pressure gauge; 11. Control box; 12. Horizontal plate; 13. Protective box; 14. First stirring blade; 15. Cooking chamber; 16. Storage chamber; 17. Dissolving chamber; 18. Second stirring blade; 19. Electric heating belt; 20. Jacket. Detailed Implementation
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0035] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce. Example
[0036] Please see Figure 1-8This utility model provides a technical solution: an automated dosing device, including a housing 1, which is made of high-quality carbon steel and has undergone rust removal and anti-corrosion treatment. The housing 1 is equipped with a curing chamber 15, a storage chamber 16, and a dissolving chamber 17. Three first motors 4 are installed on the top of the housing 1. The output shaft of the first motors 4 is fixed with first stirring blades 14, which are located inside the curing chamber 15, the storage chamber 16, and the dissolving chamber 17. The curing chamber 15, the storage chamber 16, and the dissolving chamber 17 are connected by pipes. Water pumps are installed inside the curing chamber 15, the storage chamber 16, and the dissolving chamber 17. After the agent is dissolved in the dissolving chamber 17, it is pumped into the curing chamber 15 by the water pump. The curing chamber 15 can better dissolve and cure the mixed agent solution. The drug solution in the curing chamber 15 is pumped into the storage chamber 16, which temporarily stores the cured agent solution to ensure continuous supply.
[0037] The top of the box 1 is equipped with a hopper 2, and a horizontal plate 12 located on one side of the hopper 2 is slidably connected to the top of the box 1 via a slide rail; the top of the hopper 2 is equipped with a shielding component 3; and the bottom of the hopper 2 is equipped with a dosing component 5.
[0038] The shielding assembly 3 includes a cover plate 31, with a sealing ring 33 fixed to the top of the inner wall of the cover plate 31. A limiting ring 32 is connected to one side of the top of the hopper 2. A partition plate fixed to the inner wall of the box body 1 is provided between the curing chamber 15, the storage chamber 16 and the dissolving chamber 17. When the outer side of the limiting ring 32 is connected to the inner side of the cover plate 31, the bottom of the limiting ring 32 abuts against the bottom of the sealing ring 33. The cover plate 31 and the limiting ring 32 can be connected by a threaded connection or a sleeve insertion connection. The limiting ring 32 is completely embedded in the sealing ring 33, thereby preventing moisture from the air from entering the hopper 2 through the cover plate 31.
[0039] The dosing assembly 5 includes a conveying pipe 51 and a water spraying mechanism. A second motor 54 is fixed at one end of the conveying pipe 51. The second motor 54 is a geared motor. A spiral blade 58 is fixed at the output shaft end of the second motor 54. A discharge rack 56 is fixed at the other end of the conveying pipe 51. A discharge pipe 53 is connected to the bottom of the hopper 2 on one side of the top of the conveying pipe 51.
[0040] The outer side of the spiral blade 58 is rotatably connected to one side of the conveying pipe 51 and the discharge rack 56. The bottom of the conveying pipe 51 is fixed to the top of the box 1. The surface of the spiral blade 58 is provided with a pitch 59. The width of the pitch 59 is the same as the width of the inner wall of the discharge rack 56. The pitch 59 of the spiral blade 58 contains a fixed amount of medicine, which ensures the accuracy and reliability of the delivered medicine dosage. The space between the spiral blade 58 and the conveying pipe 51 is filled with medicine, which seals the hopper 2 into a closed space, preventing water vapor evaporated from the dissolving chamber 17 from entering the hopper 2.
[0041] The water spraying mechanism includes a guide plate 52, a water spray pipe 55 fixed to one side of the top of the guide plate 52, an electric valve installed on the water spray pipe 55, the electric valve being controlled by a controller, several water spray holes 57 opening at the bottom of the water spray pipe 55, the angle between the guide plate 52 and the horizontal plane is 160°, the angle between the center line of the water spray hole 57 and the guide plate 52 is 50°, the diameter of the water spray hole 57 is 1mm, after the agent falls from the conveying pipe 51 onto the guide plate 52, it slides into the dissolving chamber 17 due to its own weight, when the dry agent adheres to the guide plate 52, water washes the guide plate 52 through the water spray holes 57 of the water spray pipe 55 and washes the agent into the dissolving chamber 17, one side of the guide plate 52 is fixed to the top of the inner wall of the dissolving chamber 17, the inner diameter of the discharge pipe 53 is φ51.75mm, and a protective box 13 located outside the discharge rack 56 is fixed to one side of the top of the box body 1.
[0042] A jacket 20 is fitted around the outside of the silo 2. An electric heating belt 19 is wrapped around the outside of the silo 2, located inside the jacket 20. The electric heating belt 19 provides a dry and constant temperature environment inside the silo 2, preventing the powdered agent from caking and bridging inside the silo 2. A water pipe 6 is connected to one side of the dissolving chamber 17. The water pipe 6 uses a combination of flange connections, welding, and compression fitting connections. Pipe supports are installed at regular intervals for fixation. The water inlet of the water pipe 6 is connected to an external water source. A flow meter 8, a solenoid valve 9, and a pressure gauge 10 are installed on the water pipe 6. A spray pipe... The inlet of motor 55 is connected to water pipe 6. A third motor 7 is fixed on the top of hopper 2. A second stirring blade 18 located inside hopper 2 is fixed to the output shaft of the third motor 7. A control box 11 is installed on one side of the top of the housing 1. A controller is installed inside the control box 11. The controller signal output terminal is electrically connected to the input terminals of the first motor 4, the second motor 54, the third motor 7, the solenoid valve 9, and the electric heating belt 19, respectively. Under the action of flow meter 8 and solenoid valve 9, the amount of water entering dissolving chamber 17 is controlled according to the amount of medicine added each time. The controller model is SMJY-20.
[0043] In this embodiment, the electrical wiring adopts a combination of cable trays and conduits, with strong and weak current lines laid separately to prevent electromagnetic interference. Galvanized cable trays are used, providing excellent corrosion resistance and load-bearing capacity. The conduits are made of PVC or metal. All electrical equipment and wiring are grounded to ensure electrical safety during operation. Furthermore, a surge protector is installed on the equipment's control box 11 to prevent electrical damage caused by external factors such as lightning strikes.
[0044] Working principle: When the outer side of the limiting ring 32 is connected to the inner side of the cover plate 31, the bottom of the limiting ring 32 abuts against the bottom of the sealing ring 33. Through threaded connection or sleeve insertion connection, the limiting ring 32 is completely embedded in the sealing ring 33, thereby preventing moisture in the air from entering the hopper 2 through the cover plate 31, providing a relatively dry environment for the medicine in the hopper 2; then, the horizontal plate 12 is pulled to one side, so that one end of the horizontal plate 12 protrudes from one side of the box body 1. The worker can place the medicine on the top of the horizontal plate 12, and then add the medicine into the inner side of the hopper 2 through the limiting ring 32;
[0045] When the electric heating belt 19 is powered on, it generates heat to provide a dry and constant temperature environment in the silo 2, preventing the powdered medicine from caking and bridging in the silo 2, and ensuring that the medicine can be discharged smoothly.
[0046] When the equipment is running, the medicine in the hopper 2 enters the conveying pipe 51 through the discharge pipe 53. The second motor 54 drives the spiral blades 58 to rotate. The outer sides of the spiral blades 58 are rotatably connected to one side of the conveying pipe 51 and the discharge rack 56, and the surface of the spiral blades 58 is provided with a pitch 59. The width of the pitch 59 is the same as the width of the inner wall of the discharge rack 56. The pitch 59 of the spiral blades 58 contains a fixed amount of medicine. As the spiral blades 58 rotate, the medicine is evenly and accurately conveyed to the discharge rack 56 and discharged from the bottom of the discharge rack 56. At the same time, the space between the spiral blades 58 and the conveying pipe 51 is filled with medicine, sealing the hopper 2 into a closed space and preventing water vapor evaporated from the dissolving chamber 17 from entering the hopper 2.
[0047] The agent falls from the feed pipe 51 onto the guide plate 52, and then slides into the dissolving chamber 17 due to its own weight. When the dry agent adheres to the guide plate 52, water is sprayed through the spray holes 57 on the spray pipe 55 of the water spraying mechanism to flush the guide plate 52 and wash the agent into the dissolving chamber 17, ensuring that the water effectively flushes the agent on the guide plate 52 and allows the agent to smoothly enter the dissolving chamber 17.
[0048] A water pipe 6 is connected to one side of the dissolving chamber 17. A flow meter 8, a solenoid valve 9, and a pressure gauge 10 are installed on the water pipe 6. The inlet end of the spray pipe 55 is connected to the water pipe 6. Under the action of the flow meter 8 and the solenoid valve 9, the amount of water entering the dissolving chamber 17 is controlled according to the amount of medicine added each time, so as to achieve an accurate ratio of medicine to water and ensure the dissolution effect.
[0049] A third motor 7 is fixed to the top of the silo 2, and a second stirring blade 18 located inside the silo 2 is fixed to the output shaft end of the third motor 7. The third motor 7 drives the second stirring blade 18 to rotate, stirring the medicine in the silo 2 to prevent the medicine from clumping in the silo 2 and to ensure that the medicine can be discharged smoothly.
[0050] The first motor 4 drives the first stirring blade 14 to rotate, stirring the liquids in the maturation chamber 15, storage chamber 16 and dissolving chamber 17, so that the medicine and water are fully mixed, accelerating the dissolution process and improving the dissolution efficiency. After the medicine is dissolved in the dissolving chamber 17, it is pumped into the maturation chamber 15 by a water pump. The maturation chamber 15 further dissolves and matures the mixed medicine solution. The medicine solution in the maturation chamber 15 is pumped into the storage chamber 16, which temporarily stores the matured medicine solution to ensure continuous supply.
[0051] In summary, by connecting the limiting ring 32 to the inner side of the cover plate 31 and fully embedding it into the sealing ring 33, moisture in the air is effectively prevented from entering the hopper 2 through the cover plate 31, providing a relatively dry environment for the medicine in the hopper 2, which helps to maintain the quality and stability of the medicine.
[0052] By pulling the horizontal plate 12 to one side, one end of the horizontal plate 12 protrudes from one side of the box body 1, and the worker can easily place the medicine on the top of the horizontal plate 12. Then, the medicine is added into the inner side of the hopper 2 through the limiting ring 32, which simplifies the medicine addition process and improves work efficiency.
[0053] When the electric heating belt 19 is energized, it generates heat, providing a dry and constant temperature environment inside the silo 2. This helps prevent adverse reactions of the powdered medicine due to changes in humidity or temperature, thereby maintaining the original properties and stability of the medicine.
[0054] The second motor 54 drives the spiral blades 58 to rotate, and the pitch 59 achieves uniform and accurate delivery of the agent, ensuring that the amount of material fed each time is relatively fixed, thus improving the accuracy and stability of the feeding. The space between the spiral blades 58 and the conveying pipe 51 is filled with the agent, sealing the hopper 2 into a closed space, effectively blocking the water vapor evaporated from the dissolving chamber 17 from entering the hopper 2, which helps to maintain a dry environment for the agent in the hopper 2 and prevents the agent from deteriorating or becoming ineffective due to moisture.
[0055] When the dry agent adheres to the guide plate 52, the water spray holes 57 on the water spray pipe 55 of the water spraying mechanism can flush the guide plate 52 and wash the agent into the dissolving chamber 17, effectively solving the problem of the agent adhering to the guide plate 52 and ensuring the smooth transfer of the agent.
[0056] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.
Claims
1. An automated dosing apparatus comprising a cabinet (1), characterized in that: The box (1) is provided with a curing chamber (15), a storage chamber (16) and a dissolving chamber (17) respectively. The top of the box (1) is provided with a hopper (2). A horizontal plate (12) located on one side of the hopper (2) is slidably connected to one side of the top of the box (1) via a slide rail. The top of the silo (2) is provided with a shielding component (3); the bottom of the silo (2) is provided with a dosing component (5); The shielding assembly (3) includes a cover plate (31), a sealing ring (33) is fixed on the top of the inner wall of the cover plate (31), and a limit ring (32) is connected to one side of the top of the hopper (2). The dosing assembly (5) includes a conveying pipe (51) and a water spraying mechanism. A second motor (54) is fixed at one end of the conveying pipe (51), and a spiral blade (58) is fixed at the output shaft end of the second motor (54). A discharge rack (56) is fixed at the other end of the conveying pipe (51). A discharge pipe (53) is connected to the bottom of the hopper (2) on one side of the top of the conveying pipe (51).
2. An automated chemical addition apparatus according to claim 1, wherein: The ripening chamber (15), storage chamber (16) and dissolving chamber (17) are respectively provided with partitions fixed to the inner wall of the box body (1). When the outer side of the limiting ring (32) is connected to the inner side of the cover plate (31), the bottom of the limiting ring (32) abuts against the bottom of the sealing ring (33).
3. The automated chemical addition apparatus of claim 1, wherein: The outer side of the spiral blade (58) is rotatably connected to one side of the conveying pipe (51) and the discharge rack (56), and the bottom of the conveying pipe (51) is fixed to the top of the box (1).
4. An automated chemical addition apparatus according to claim 3, wherein: The surface of the spiral blade (58) is provided with a pitch (59), the width of which is the same as the width of the inner wall of the discharge rack (56).
5. An automated chemical addition apparatus according to claim 4, wherein: The water spraying mechanism includes a guide plate (52), a water spray pipe (55) is fixed on one side of the top of the guide plate (52), and a number of water spray holes (57) are opened at the bottom of the water spray pipe (55). The angle between the guide plate (52) and the horizontal plane is 155°-165°, the angle between the center line of the water spray hole (57) and the guide plate (52) is 45°-55°, and the diameter of the water spray hole (57) is 0.9mm-1.1mm.
6. An automated chemical addition apparatus according to claim 5, wherein: One side of the guide plate (52) is fixed to the top of the inner wall of the dissolving chamber (17), the inner diameter of the feed pipe (53) is φ51.75mm, and a protective box (13) located outside the discharge rack (56) is fixed on one side of the top of the box body (1).
7. The automated chemical addition apparatus of claim 1, wherein: The hopper (2) is fitted with a jacket (20) on the outside, and an electric heating belt (19) located inside the jacket (20) is wrapped around the outside of the hopper (2).
8. An automated dosing device according to claim 5, characterized in that: The dissolving chamber (17) is connected to a water pipe (6) on one side. A flow meter (8), a solenoid valve (9) and a pressure gauge (10) are installed on the water pipe (6). The inlet end of the spray pipe (55) is connected to the water pipe (6).
9. The automated chemical addition apparatus of claim 1, wherein: The top of the box (1) is equipped with three first motors (4), and the output shaft of the first motor (4) is fixed with a first stirring blade (14). The first stirring blade (14) is located inside the maturation chamber (15), the storage chamber (16) and the dissolving chamber (17) respectively.
10. An automated chemical addition apparatus according to claim 9, wherein: The top of the hopper (2) is fixed with a third motor (7), and the output shaft of the third motor (7) is fixed with a second stirring blade (18) located inside the hopper (2). A control box (11) is installed on one side of the top of the box (1). A controller is installed inside the control box (11), and the signal output terminal of the controller is electrically connected to the input terminals of the first motor (4), the second motor (54), the third motor (7), the solenoid valve (9), and the electric heating belt (19).