Mixing, discharging and drying device for powder seasoning production

Abstract

The application relates to the technical field of food processing equipment, and discloses a mixing and discharging drying device for powder seasoning production, which comprises a mixing barrel, a conical spiral belt for mixing materials is arranged in the mixing barrel, an air inlet is formed in the top of the mixing barrel, a flow guide cover is arranged at the air outlet end of the air inlet, the bottom end of the flow guide cover is provided with an opening for ensuring downward airflow, an air supply cover is arranged at the air inlet end of the air inlet, and a hot air pipe for inputting airflow is fixedly arranged at one side of the bottom end of the air supply cover. The mixing, heating, ventilation and moisture removal functions are integrated in the same mixing barrel, the function integration degree is high, the material transfer link and the equipment floor area are reduced, the investment cost and the secondary pollution risk are reduced, the heat conduction oil can directly heat the internal materials of the mixing barrel, the water vapor at the top is forcibly sucked by an air draught fan, and the material caking problem caused by the condensation and backflow of the water vapor at the top of the barrel is effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of food processing equipment technology, specifically to a mixing, discharging, and drying device for the production of powdered seasonings. Background Technology

[0002] Powdered seasonings are compound seasoning products made by mixing various solid powders such as salt, sucrose, spice powder, and anti-caking agents in a certain proportion. They are widely used in the cooking and processing of various foods. Currently, their production process usually involves multiple independent machines to complete the mixing, drying, and dehumidification processes in steps. Material transfer between the machines requires manual labor or auxiliary conveying devices.

[0003] However, this decentralized production process has significant shortcomings. On the one hand, materials need to be transferred multiple times between different devices, which not only increases the equipment footprint and investment costs, but also makes the materials prone to spillage and residue during transfer. It also increases the chance of contact with the external environment, posing a risk of secondary contamination and affecting product hygiene and safety. On the other hand, the drying process is crucial for ensuring the moisture content of powdered seasonings meets standards, preventing mold growth, and extending shelf life. However, it presents significant challenges in actual production. If the moisture generated after the materials are heated cannot be discharged from the container in time, it will condense at the top of the equipment, forming droplets that fall back onto the material surface, causing the material to become damp and clump, severely affecting product quality and subsequent packaging. When dry air is introduced into the equipment to assist in dehumidification, the direct entry of untreated cold air will cause localized cooling, reducing drying efficiency and prolonging drying time. Simultaneously, the air inlet is easily blocked by fine powder backflow, affecting the long-term stable operation of the equipment.

[0004] Therefore, developing a powder seasoning production device with high integration, good drying effect and smooth moisture removal is of great practical significance and market application value. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a mixing, discharging, and drying device for the production of powdered seasonings, which has the advantages of high integration and good drying effect, thus solving the problems mentioned in the background technology.

[0006] This invention provides the following technical solution: a mixing and drying device for powdered seasoning production, comprising a mixing barrel, wherein the interior of the mixing barrel is provided with a conical spiral ribbon for mixing materials, the top of the mixing barrel is provided with an air inlet, the air outlet end of the air inlet is provided with a guide hood, the bottom end of the guide hood is provided with an opening to ensure downward airflow, the air inlet end of the air inlet is provided with an air supply hood, a hot air pipe for inputting airflow is fixedly provided on one side of the bottom end of the air supply hood, a barrel cover is fixedly installed on the top of the mixing barrel, a geared motor for driving the conical spiral ribbon is provided on the top of the barrel cover, a discharge mechanism for forcibly discharging moisture from inside the mixing barrel is provided on one side of the barrel cover, and a gas-material heating mechanism for heating materials and air is provided on the surface of the mixing barrel.

[0007] As a preferred embodiment of the present invention, the discharge mechanism includes a support frame, the bottom end of which is fixedly connected to one side of the bucket lid, and a blower for maintaining a slight negative pressure inside the mixing bucket is fixedly installed at the top end of the support frame. The bottom of the blower is fixedly connected to the top end of the support frame by bolts. A slight negative pressure exhaust pipe is fixedly connected to the air inlet end of the blower, and the air inlet end of the slight negative pressure exhaust pipe is fixedly connected to a dehumidification port on the surface of the bucket lid. An exhaust pipe for discharging moisture is fixedly connected to the air outlet end of the blower. The rated exhaust volume of the blower is greater than the rated air inlet volume of the hot air pipe, so as to maintain a slight negative pressure inside the mixing bucket.

[0008] In a preferred embodiment of the present invention, the gas-fuel heating mechanism includes a jacket, which is fixedly wrapped around the outer surface of the mixing tank. A spiral guide plate for guiding the heat transfer oil to enhance the heat exchange effect is fixedly connected between the jacket and the mixing tank. The spiral guide plate spirals upward along the inner wall of the jacket to form a spiral flow channel. A spiral spring-shaped coil for preheating the incoming air is fixedly provided on the inner wall of the jacket. The spiral spring-shaped coil is located within the pitch gap of the spiral guide plate. A dry air input pipe is fixedly provided at the air inlet end of the spiral spring-shaped coil. The air outlet of the spiral spring-shaped coil is fixedly equipped with a dry air output pipe. The air inlet of the hot air pipe is fixedly connected to the air outlet of the dry air output pipe through a flange. A heat transfer oil output pipe is fixedly equipped on the top of one side of the jacket, and a heat transfer oil input pipe is fixedly equipped on the bottom of the other side of the jacket. The bottom of the jacket is fixedly equipped with a support leg for providing stable support for the entire device. There are three support legs, which are evenly distributed along the circumference of the jacket. A positioning plate is fixedly equipped at the bottom of the support leg, and the surface of the positioning plate is provided with positioning holes for fixing.

[0009] As a preferred embodiment of the present invention, the top and bottom of the jacket are both fixedly provided with sleeves, and the two sleeves are respectively fitted with the dry air inlet pipe and the dry air outlet pipe. The internal sealing filler of the jacket is used to seal the gap between the dry air inlet pipe, the dry air outlet pipe and the jacket.

[0010] As a preferred embodiment of the present invention, the bottom of the mixing tank is fixedly provided with a conical guide bottom, which facilitates the concentrated discharge of materials by gravity. A discharge pipe is fixedly provided at the bottom end of the conical guide bottom, and a discharge valve for controlling the discharge is fixedly installed at the bottom end of the discharge pipe through a flange. A support ring is fixedly provided at the top of the mixing tank, and an annular groove coaxial with the support ring is provided on the surface of the support ring. A sealing gasket is engaged inside the annular groove. A pressure ring is fixedly provided at the bottom of the tank lid, and the bottom end of the pressure ring is fixedly connected to the top end of the support ring by bolts. The sealing gasket is pressed between the pressure ring and the support ring to achieve a sealed connection between the tank lid and the mixing tank. Bolt holes for bolt installation are provided on the surface of the support ring and the surface of the pressure ring.

[0011] As a preferred embodiment of the present invention, a frame is fixedly provided at the center of the top of the bucket lid. A rotating shaft coaxial with the mixing bucket is rotatably installed inside the frame via bearings. A support rod for providing fixed support for the tapered screw is fixedly provided at the bottom of the rotating shaft. The bottom of the geared motor is fixedly connected to the top of the frame via bolts. The top of the rotating shaft is fixedly connected to the output shaft of the geared motor via a coupling to achieve reliable power transmission.

[0012] As a preferred embodiment of the present invention, a feeding pipe is fixedly provided on the other side of the bucket lid. Several feeding pipes are provided for feeding different kinds of powdered seasoning ingredients into the mixing bucket. A feeding valve for controlling the feeding on and off is installed in the middle of each feeding pipe. A feeding port corresponding to the feeding pipe is opened on the surface of the bucket lid.

[0013] As a preferred embodiment of the present invention, the top of the flow guide hood is provided with an inclined surface for guiding gas flow, and a sealing strip is fixedly provided on one side of the flow guide hood for sealing the contact surface between it and the inner wall of the mixing barrel to prevent airflow leakage from the side. Curved mounting plates are fixedly provided on both sides of the flow guide hood, and the curved mounting plates are fixedly connected to the inner wall of the top of the mixing barrel by screws. A baffle net one for blocking material splashing is fixedly provided on the opening surface of the flow guide hood, and a baffle net two for further blocking dust is fixedly provided at the air outlet end of the air supply hood.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This powder seasoning production mixing and drying device integrates mixing, heating, and ventilation / dehumidification functions into a single mixing tank. This high degree of integration reduces material transfer links and equipment footprint, lowering investment costs and the risk of secondary pollution. The heat transfer oil directly heats the materials inside the mixing tank, resulting in a short heat transfer path, minimal heat loss, and improved heating efficiency. A forced draft fan extracts moisture from the top, with its rated extraction volume exceeding the rated intake volume of the hot air duct, maintaining a slight negative pressure inside the mixing tank. This effectively prevents material clumping caused by condensation and backflow of moisture at the top of the tank. Furthermore, a spiral spring-shaped coil is installed inside the heat transfer oil jacket within the pitch gap of the spiral guide plate. The residual heat of the heat transfer oil in the jacket preheats the incoming dry air, preventing cold air from directly entering and causing localized cooling, while also improving energy efficiency.

[0016] 2. This powder seasoning production mixing and drying device has a guide hood at the air inlet and outlet to ensure downward airflow. The guide hood opening surface is equipped with a baffle net one, and the air outlet end of the air supply hood is equipped with a baffle net two, which effectively prevents powder backflow and blockage of the air inlet pipe, ensuring long-term continuous and stable operation of the equipment. During the rotation of the conical screw ribbon, the material is lifted from bottom to top and thrown to all sides, so that the material forms a continuous internal circulation flow in the mixing barrel, which fully contacts the heating wall and preheated air, significantly improving the mixing uniformity and drying efficiency. Attached Figure Description

[0017] Figure 1 This is one of the structural schematic diagrams of the present invention;

[0018] Figure 2 This is the second structural schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the exploded structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the mixing tank of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the air guide shield of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the bucket lid of the present invention;

[0023] Figure 7 This is a schematic diagram of the emission mechanism of the present invention;

[0024] Figure 8 This is a schematic diagram of the gas-fired heating mechanism of the present invention.

[0025] In the diagram: 1. Mixing tank; 2. Conical ribbon; 3. Air inlet; 4. Flow guide; 5. Air supply hood; 6. Baffle 1; 7. Baffle 2; 8. Hot air duct; 9. Tank lid; 10. Frame; 11. Gear motor; 12. Discharge mechanism; 1201. Support; 1202. Exhaust fan; 1203. Micro-negative pressure exhaust duct; 1204. Discharge pipe; 13. Feeding pipe; 14. Feeding valve; 15. Gas-material heating mechanism; 1501. Jacket; 150 2. Spiral guide plate; 1503. Spiral spring-shaped coil; 1504. Heat transfer oil inlet pipe; 1505. Heat transfer oil outlet pipe; 1506. Dry air inlet pipe; 1507. Dry air outlet pipe; 1508. Pipe sleeve; 1509. Support leg; 16. Conical guide bottom; 17. Discharge valve; 18. Support ring; 19. Sealing gasket; 20. Pressure ring; 21. Rotating shaft; 22. Support rod; 23. Curved mounting plate; 24. Sealing strip. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figures 1-8 A mixing and drying device for powdered seasoning production includes a mixing tank 1. A conical guide bottom 16 is fixedly provided at the bottom of the mixing tank 1. The conical guide bottom 16 facilitates the concentrated discharge of materials by gravity. A discharge pipe is fixedly provided at the bottom end of the conical guide bottom 16. A discharge valve 17 for controlling the discharge is fixedly installed at the bottom end of the discharge pipe through a flange. A conical screw ribbon 2 for mixing materials is provided inside the mixing tank 1.

[0028] The mixing tank 1 has an air inlet 3 at its top, and a guide shroud 4 at the air outlet of the air inlet 3. The bottom of the guide shroud 4 has an opening to ensure downward airflow, and the top of the guide shroud 4 has an inclined surface for guiding the gas flow. A sealing strip 24 is fixedly installed on one side of the guide shroud 4 to seal the contact surface between it and the inner wall of the mixing tank 1 to prevent airflow leakage from the side. Curved mounting plates 23 are fixed on both sides of the guide shroud 4, and the curved mounting plates 23 are fixed to the inner wall of the top of the mixing tank 1 by screws. The fixed connection can fit the inner wall of the mixing tank 1 and facilitate the installation and disassembly of the guide hood 4. After the guide hood 4 is disassembled, it will not interfere with the installation and disassembly of the conical screw 2, which can ensure the operating space. The opening surface of the guide hood 4 is fixedly provided with a baffle 6 for blocking material splashing. The air inlet 3 is provided with an air supply hood 5. The air outlet hood 5 is fixedly provided with a baffle 7 for further blocking dust. A hot air pipe 8 for inputting dry hot air into the mixing tank 1 is fixedly provided on one side of the bottom end of the air supply hood 5.

[0029] A lid 9 is fixedly installed on the top of the mixing tank 1. A geared motor 11 is provided on the top of the lid 9 to drive the conical screw ribbon 2. The geared motor 11 drives the conical screw ribbon 2 to lift the material from bottom to top and throw it in all directions, so that the material forms a continuous internal circulation flow in the mixing tank 1. A discharge mechanism 12 is provided on one side of the lid 9 to force the moisture inside the mixing tank 1 to be discharged, so that the inside of the mixing tank 1 is always maintained in a slightly negative pressure state, which effectively avoids the problem of material clumping caused by water vapor condensing and flowing back at the top of the tank. A gas heating mechanism 15 is provided on the surface of the mixing tank 1 to heat the material and air, which can heat the material inside the mixing tank 1 and heat the input dry air.

[0030] In this embodiment, preferably, the discharge mechanism 12 includes a bracket 1201. The bottom end of the bracket 1201 is fixedly connected to one side of the bucket cover 9. A blower 1202 for maintaining a slight negative pressure inside the mixing bucket 1 is fixedly installed on the top end of the bracket 1201. The bottom of the blower 1202 is fixedly connected to the top end of the bracket 1201 by bolts, which can maintain the stability of the blower 1202 and allow for installation and removal of the blower 1202. A slight negative pressure exhaust pipe 1203 is fixedly connected to the air inlet end of the blower 1202 for slight negative pressure exhaust. The air inlet of pipe 1203 is fixedly connected to the dehumidification port on the surface of the barrel cover 9. The air outlet of the blower 1202 is fixedly connected to the discharge pipe 1204 for discharging moisture. The rated air volume of the blower 1202 is greater than the rated air volume of the hot air pipe 8. When the blower 1202 is working, the air containing water vapor at the top of the mixing barrel 1 can be forcibly extracted through the micro negative pressure exhaust pipe 1203 and discharged through the discharge pipe 1204. Since the rated air volume of the blower 1202 is greater than the rated air volume of the hot air pipe 8, the interior of the mixing barrel 1 can be kept under a micro negative pressure.

[0031] In this embodiment, preferably, the gas-material heating mechanism 15 includes a jacket 1501, which is fixedly covered on the outer surface of the mixing barrel 1. A spiral guide plate 1502 for guiding the heat transfer oil to enhance the heat exchange effect is fixedly connected between the jacket 1501 and the mixing barrel 1. The spiral guide plate 1502 spirals upward along the inner wall of the jacket 1501 to form a continuous spiral flow channel. A heat transfer oil output pipe 1505 is fixedly provided on the top of one side of the jacket 1501, and a heat transfer oil input pipe 1504 is fixedly provided on the bottom of the other side of the jacket 1501. The heat transfer oil enters the jacket 1501 from the heat transfer oil input pipe 1504, flows upward along the spiral flow channel under the guidance of the spiral guide plate 1502, and flows out from the heat transfer oil output pipe 1505, indirectly heating the material inside the mixing barrel 1 and improving the drying efficiency of the material.

[0032] The inner wall of the jacket 1501 is fixedly provided with a spiral spring-shaped coil 1503 for preheating the incoming air. The spiral spring-shaped coil 1503 is located in the pitch gap of the spiral guide plate 1502. The air inlet end of the spiral spring-shaped coil 1503 is fixedly provided with a dry air input pipe 1506, and the air outlet end of the spiral spring-shaped coil 1503 is fixedly provided with a dry air output pipe 1507. The air inlet end of the hot air pipe 8 is fixedly connected to the air outlet end of the dry air output pipe 1507 through a flange. Clean dry air is input through the dry air input pipe 1506. The spiral spring-shaped coil 1503 can increase its heating time and improve heating efficiency. After being heated, the dry air can enter the interior of the mixing tank 1 through the dry air output pipe 1507 and the hot air pipe 8.

[0033] The top and bottom of the jacket 1501 are both fixed with sleeves 1508. The two sleeves 1508 are respectively fitted with the dry air inlet pipe 1506 and the dry air outlet pipe 1507. The internal sealing packing of the jacket 1501 is used to seal the gap between the dry air inlet pipe 1506, the dry air outlet pipe 1507 and the jacket 1501 to prevent heat transfer oil leakage.

[0034] The bottom of the jacket 1501 is fixedly provided with support legs 1509 for providing stable support for the entire device. There are three support legs 1509, which are evenly distributed along the circumference of the jacket 1501 to provide stable support for the entire device. The bottom end of the support leg 1509 is fixedly provided with a positioning plate. The surface of the positioning plate is provided with positioning holes for fixing. If necessary, the positioning plate can be fixed to the ground by anchor bolts and positioning holes to improve its firmness.

[0035] In this embodiment, preferably, a support ring 18 is fixedly provided on the top of the mixing tank 1. The surface of the support ring 18 is provided with an annular groove coaxial with it. A sealing gasket 19 is engaged inside the annular groove to prevent the sealing gasket 19 from shifting. A pressure ring 20 is fixedly provided on the bottom of the tank cover 9. The bottom end of the pressure ring 20 is fixedly connected to the top end of the support ring 18 by bolts. The sealing gasket 19 is pressed between the pressure ring 20 and the support ring 18 to achieve a sealed connection between the tank cover 9 and the mixing tank 1. Bolt holes for bolt installation are provided on the surface of the support ring 18 and the surface of the pressure ring 20, allowing bolts to be inserted.

[0036] In this embodiment, preferably, a frame 10 is fixedly provided at the middle of the top of the bucket lid 9. Inside the frame 10, a rotating shaft 21 coaxial with the mixing bucket 1 is rotatably installed via bearings. A support rod 22 for providing fixed support for the tapered screw ribbon 2 is fixedly provided at the bottom of the rotating shaft 21. The bottom of the geared motor 11 is fixedly connected to the top of the frame 10 via bolts. The top of the rotating shaft 21 is fixedly connected to the output shaft of the geared motor 11 via a coupling. The rotating shaft 21 is driven to rotate at low speed by the geared motor 11. The rotating shaft 21 can drive the tapered screw ribbon 2 to rotate via the support rod 22, so as to realize reliable power transmission.

[0037] In this embodiment, preferably, a feeding pipe 13 is fixedly provided on the other side of the barrel cover 9. Several feeding pipes 13 are provided for feeding different kinds of powdered seasoning raw materials into the mixing barrel 1. Each feeding pipe 13 is equipped with a feeding valve 14 in the middle for controlling the feeding flow. The surface of the barrel cover 9 is provided with a feeding port corresponding to the feeding pipe 13 to ensure the input of materials.

[0038] During use, check whether all connecting bolts are tightened, whether the sealing gasket 19 is intact, whether the feeding valve 14 is closed, whether the discharge valve 17 is closed, check whether the heat transfer oil inlet pipe 1504 and heat transfer oil outlet pipe 1505 are reliably connected to the heat transfer oil circulation system, and whether the dry air inlet pipe 1506 is connected to the dry air source or the atmosphere. Confirm that the induced draft fan 1202 and the geared motor 11 are operating normally and without abnormal noise.

[0039] Open the feeding valve 14 on the feeding pipe 13 and put the weighed powdered seasoning raw materials into the mixing tank 1 from the feeding pipe 13. The raw materials can be put into different feeding pipes 13 according to their type. After feeding is completed, close the feeding valve 14 to prevent moisture leakage and dust from flying during the drying process.

[0040] Start the heat transfer oil circulation system so that the high temperature heat transfer oil enters the jacket 1501 from the heat transfer oil inlet pipe 1504. Under the guidance of the spiral guide plate 1502, the heat transfer oil flows from bottom to top along the spiral flow channel and flows out from the heat transfer oil outlet pipe 1505. The heat transfer oil indirectly heats the material inside the mixing tank 1 directly through the cylinder wall, and the moisture in the material evaporates by heating.

[0041] Start the geared motor 11. The geared motor 11 drives the rotating shaft 21 to rotate through the coupling. The rotating shaft 21 drives the conical screw ribbon 2 to rotate. During the rotation, the conical screw ribbon 2 lifts the material from bottom to top and throws it to all sides, so that the material forms a continuous internal circulation flow in the mixing tank 1 and fully contacts the heating wall to achieve uniform heating and mixing. The sealing gasket 19 and sealing strip 24 can be made of silicone rubber, which can resist the high temperature during operation and meet food-grade hygiene standards.

[0042] Turn on the dry air source so that clean dry air enters the spiral spring-shaped coil 1503 from the dry air inlet pipe 1506. When the dry air flows through the spiral spring-shaped coil 1503, it is preheated by the high-temperature heat transfer oil in the jacket 1501. The preheated air enters the guide shroud 4 through the dry air outlet pipe 1507, hot air pipe 8, air supply shroud 5, and air inlet 3. Under the guidance of the guide shroud 4, it flows downward into the mixing tank 1.

[0043] At the same time, the induced draft fan 1202 is started. The induced draft fan 1202 forces the air containing water vapor at the top of the mixing tank 1 through the micro negative pressure exhaust pipe 1203 and discharges it through the discharge pipe 1204. Since the rated exhaust volume of the induced draft fan 1202 is greater than the rated air intake volume of the hot air pipe 8, the inside of the mixing tank 1 is always kept in a micro negative pressure state, ensuring that water vapor will not leak out from the gaps such as the feed pipe 13, and also avoiding the condensation and backflow of water vapor at the top of the tank.

[0044] During the drying process, the temperature and humidity inside the mixing tank 1 can be monitored using existing temperature and humidity sensors as needed. The heating intensity can be controlled by adjusting the flow rate and temperature of the heat transfer oil. The negative pressure and airflow speed inside the mixing tank 1 can be controlled by adjusting the speed of the induced draft fan 1202 and the air intake of the hot air pipe 8. When the material reaches the required degree of dryness, the heat transfer oil circulation system is first shut off to stop heating. Then the drying air source is shut off to stop air intake. After the induced draft fan 1202 and the geared motor 11 continue to run for a period of time, the temperature inside the mixing tank 1 is reduced to a safe range and the residual moisture is discharged. The geared motor 11 is then shut off to stop stirring, and the induced draft fan 1202 is shut off to stop dehumidification.

[0045] Open the discharge valve 17, and the dried powdered seasoning material will be discharged from the conical guide bottom 16 through the discharge pipe by gravity and collected in the packaging container. After the discharge is completed, close the discharge valve 17. After the production is completed, the barrel cover 9 can be opened to clean or wash the inside of the mixing barrel 1, the conical screw ribbon 2, the guide hood 4, the first baffle 6, the second baffle 7, and other parts. The guide hood 4 can be removed by disassembling the screws on the curved mounting plate 23 to facilitate a thorough cleaning of the inside of the mixing barrel 1.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mixing, discharging, and drying device for powdered seasoning production, comprising a mixing tank (1), characterized in that: The mixing drum (1) is provided with a conical spiral ribbon (2) for mixing materials inside. The mixing drum (1) is provided with an air inlet (3) at the top. The air outlet of the air inlet (3) is provided with a guide hood (4). The bottom of the guide hood (4) is provided with an opening to ensure that the airflow goes downward. The air inlet of the air inlet (3) is provided with an air supply hood (5). A hot air pipe (8) for inputting airflow is fixedly provided on one side of the bottom of the air supply hood (5). A drum cover (9) is fixedly installed on the top of the mixing drum (1). A geared motor (11) for driving the conical spiral ribbon (2) is provided on the top of the drum cover (9). A discharge mechanism (12) for forcibly discharging the moisture inside the mixing drum (1) is provided on one side of the drum cover (9). A gas heating mechanism (15) for heating materials and air is provided on the surface of the mixing drum (1).

2. The mixing, discharging, and drying device for powdered seasoning production according to claim 1, characterized in that: The discharge mechanism (12) includes a bracket (1201). The bottom end of the bracket (1201) is fixedly connected to one side of the bucket lid (9). The top end of the bracket (1201) is fixedly installed with an exhaust fan (1202) for maintaining a slight negative pressure inside the mixing bucket (1). The bottom of the exhaust fan (1202) is fixedly connected to the top end of the bracket (1201) by bolts. The air inlet end of the exhaust fan (1202) is fixedly connected with a slight negative pressure exhaust pipe (1203). The air inlet end of the slight negative pressure exhaust pipe (1203) is fixedly connected to a dehumidification port on the surface of the bucket lid (9). The air outlet end of the exhaust fan (1202) is fixedly connected with an exhaust pipe (1204) for discharging moisture. The rated exhaust volume of the exhaust fan (1202) is greater than the rated air inlet volume of the hot air pipe (8) so as to maintain a slight negative pressure inside the mixing bucket (1).

3. The mixing, discharging, and drying device for powdered seasoning production according to claim 1, characterized in that: The gas heating mechanism (15) includes a jacket (1501), which is fixedly covered on the outer surface of the mixing tank (1). A spiral guide plate (1502) for guiding the heat transfer oil to enhance the heat exchange effect is fixedly connected between the jacket (1501) and the mixing tank (1). The spiral guide plate (1502) spirals upward along the inner wall of the jacket (1501) to form a spiral flow channel. A spiral spring-shaped coil (1503) for preheating the incoming air is fixedly provided on the inner wall of the jacket (1501). The spiral spring-shaped coil (1503) is located in the pitch gap of the spiral guide plate (1502). A dry air input pipe (1506) is fixedly provided at the air inlet end of the spiral spring-shaped coil (1503). A dry air output pipe (1507) is fixedly provided at the air outlet end of the spring-shaped coil (1503). The air inlet end of the hot air pipe (8) is fixedly connected to the air outlet end of the dry air output pipe (1507) through a flange. A heat transfer oil output pipe (1505) is fixedly provided at the top of one side of the jacket (1501). A heat transfer oil input pipe (1504) is fixedly provided at the bottom of the other side of the jacket (1501). A support leg (1509) for providing stable support for the entire device is fixedly provided at the bottom of the jacket (1501). There are three support legs (1509), which are evenly distributed along the circumference of the jacket (1501). A positioning plate is fixedly provided at the bottom end of the support leg (1509). A positioning hole for fixing is opened on the surface of the positioning plate.

4. The mixing, discharging, and drying device for powdered seasoning production according to claim 3, characterized in that: The top and bottom of the jacket (1501) are both fixedly provided with sleeves (1508). The two sleeves (1508) are respectively fitted with the dry air inlet pipe (1506) and the dry air outlet pipe (1507). The internal sealing packing of the jacket (1501) is used to seal the gap between the dry air inlet pipe (1506), the dry air outlet pipe (1507) and the jacket (1501).

5. The mixing, discharging, and drying device for powdered seasoning production according to claim 1, characterized in that: The bottom of the mixing tank (1) is fixedly provided with a conical guide bottom (16), which is conducive to the material being discharged by gravity. The bottom end of the conical guide bottom (16) is fixedly provided with a discharge pipe, and the bottom end of the discharge pipe is fixedly installed with a discharge valve (17) for controlling the discharge through a flange. The top of the mixing tank (1) is fixedly provided with a support ring (18), and the surface of the support ring (18) is provided with an annular groove coaxial with it. A sealing gasket (19) is engaged and connected inside the annular groove. The bottom of the tank cover (9) is fixedly provided with a pressure ring (20), and the bottom end of the pressure ring (20) is fixedly connected to the top end of the support ring (18) by bolts. The sealing gasket (19) is pressed between the pressure ring (20) and the support ring (18) to achieve a sealed connection between the tank cover (9) and the mixing tank (1). The surfaces of the support ring (18) and the pressure ring (20) are both provided with bolt holes for bolt installation.

6. The mixing, discharging, and drying device for powdered seasoning production according to claim 1, characterized in that: A frame (10) is fixedly installed at the middle of the top of the bucket lid (9). Inside the frame (10), a rotating shaft (21) coaxial with the mixing bucket (1) is rotatably installed via bearings. A support rod (22) for providing fixed support for the tapered ribbon (2) is fixedly installed at the bottom of the rotating shaft (21). The bottom of the geared motor (11) is fixedly connected to the top of the frame (10) via bolts. The top of the rotating shaft (21) is fixedly connected to the output shaft of the geared motor (11) via a coupling to achieve reliable power transmission.

7. The mixing, discharging, and drying device for powdered seasoning production according to claim 1, characterized in that: A feeding pipe (13) is fixedly provided on the other side of the barrel lid (9). Several feeding pipes (13) are provided for feeding different kinds of powdered seasoning raw materials into the mixing barrel (1). A feeding valve (14) for controlling the feeding is installed in the middle of each feeding pipe (13). The surface of the barrel lid (9) is provided with a feeding port corresponding to the feeding pipe (13).

8. The mixing, discharging, and drying apparatus for powdered seasoning production according to claim 1, characterized in that: The top of the flow guide hood (4) is provided with an inclined surface for guiding the gas flow. A sealing strip (24) is fixedly provided on one side of the flow guide hood (4) for sealing the contact surface between it and the inner wall of the mixing barrel (1) to prevent the airflow from leaking from the side. Curved mounting plates (23) are fixedly provided on both sides of the flow guide hood (4). The curved mounting plates (23) are fixedly connected to the inner wall of the top of the mixing barrel (1) by screws. A baffle net (6) for blocking material splashing is fixedly provided on the opening surface of the flow guide hood (4). A baffle net (7) for further blocking dust is fixedly provided at the air outlet end of the air supply hood (5).

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