Raw material mixing device with drying structure

Abstract

This utility model belongs to the field of adhesive raw material mixing technology, specifically a raw material mixing device with a drying structure. It includes a base, on which an outer cylinder is mounted via a bracket. The drying structure includes a drying chamber. Air holes are provided on the partition between the drying chamber and the air inlet chamber. A heating plate is installed on the inner wall of the air inlet chamber. An exhaust trough is provided on the partition between the drying chamber and the exhaust chamber. A hopper is installed on the drying chamber. Hot air is sprayed upwards from the air holes, achieving the drying of wood powder. After drying, the wood powder and hot air in the drying chamber flow together. When passing through the second filter screen before the exhaust trough, the wood powder is blocked by the second filter screen and then enters the inner cylinder through the discharge pipe, achieving the conveying of the wood powder. This structure allows the wood powder to be directly poured into the inner cylinder after pre-drying, avoiding contact between the wood powder and the outside environment, preventing secondary moisture absorption, and improving the drying properties of the wood powder.

Description

Technical Field

[0001] This utility model relates to the field of adhesive raw material mixing technology, specifically a raw material mixing device with a drying structure. Background Technology

[0002] In the manufacturing process of wooden containers, adhesives are required. During the preparation of adhesives, the raw materials need to be mixed evenly, and some of the raw materials also need to be dried and pretreated. Therefore, a raw material mixing device with a drying structure is required.

[0003] A Chinese patent with authorization announcement number CN 113663569 B discloses a mixing device for environmentally friendly adhesive production, including a support frame, a first mixing group, a second mixing group, a third mixing group, and a rotary drive mechanism. Adhesive raw materials are placed into a first mixing chamber. The rotary drive mechanism drives the first, second, and third mixing groups to perform synchronous mixing operations. The first mixing group stirs the falling adhesive and cleans the inner wall above the first mixing chamber. The second mixing group stirs the adhesive falling from the first mixing group and cleans the inner wall below the first mixing chamber. When the adhesive at the bottom of the first mixing chamber enters the second mixing chamber, the second mixing group further mixes the adhesive in the second mixing chamber. The mixing effect is significant, improving adhesive production efficiency and demonstrating excellent mixing performance.

[0004] Existing raw material mixing devices struggle to pre-dry wood flour during adhesive preparation. Typically, after drying, the wood flour is fed into the mixing device via a conveying device in the preparation process. However, the wood flour is prone to secondary moisture absorption during conveying, resulting in poor drying properties. Therefore, a raw material mixing device with a drying structure is proposed to address these issues. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve the problems existing in the existing technology, this utility model proposes a raw material mixing device with a drying structure.

[0006] The technical solution adopted by this utility model to solve its technical problem is a raw material mixing device with a drying structure, including a base, an outer cylinder mounted on the base via a bracket, a PLC controller mounted on the outer cylinder, and a drying structure mounted on the outer cylinder. The drying structure includes a drying chamber, an air inlet chamber, and an exhaust chamber inside the drying chamber. Air holes are provided on the partition between the drying chamber and the air inlet chamber. A heating plate with a mesh structure is installed on the inner wall of the air inlet chamber. An exhaust groove is provided on the partition between the drying chamber and the exhaust chamber. A first filter screen is installed on the partition between the drying chamber and the air inlet chamber, and a second filter screen is installed on the partition between the drying chamber and the exhaust chamber. A hopper is installed on the drying chamber, and a first sealing cover is installed on the hopper. A fan is mounted on the base via a machine base, and the fan is connected to the air inlet chamber. The system is equipped with a first air guide pipe. A drive motor is mounted on the inner wall of the exhaust chamber via a base. A rotor with multiple fan blades is mounted on the output shaft of the drive motor. A second air guide pipe with a first solenoid valve is mounted on the side wall of the exhaust chamber. Hot air is sprayed upwards from the air vents to dry the wood powder. After drying, the rotor drives the fan blades to rotate at high speed, creating a pressure difference between the exhaust chamber and the drying chamber. Under the action of the pressure difference, the wood powder and hot air in the drying chamber flow together. When the wood powder passes through the second filter screen in front of the exhaust slot, it is blocked by the second filter screen and then enters the inner cylinder through the discharge pipe, realizing the conveying of the wood powder. This structure allows the wood powder to be directly poured into the inner cylinder after the wood powder is pre-treated for drying, avoiding contact between the wood powder and the outside environment and preventing secondary moisture absorption. This ensures the dryness of the wood powder and is beneficial to improving its drying properties.

[0007] Preferably, the inner wall of the outer cylinder has multiple lifting grooves, each containing a spring. A lifting block is mounted on each spring, and an inner cylinder is mounted on the lifting block. An iron plate is mounted on the inner cylinder. A pulse electromagnet is mounted on the inner wall of the outer cylinder. A heating chamber is located between the outer and inner cylinders and is connected to a second air guide pipe. A regulating pipe is mounted on the side wall of the outer cylinder, and a pressure relief safety valve and a pressure gauge are mounted on the regulating pipe. A discharge port is located at the bottom of the drying chamber, and a discharge pipe is installed at the discharge port. A square butterfly valve is mounted on the discharge pipe. The top plate of the outer cylinder is connected via... The machine base is equipped with a first motor, and a stirring rod is mounted on the output shaft of the first motor. A stirring blade is mounted on the stirring rod. A feed pipe is mounted on the outer cylinder, and a second sealing cover is mounted on the feed pipe. A discharge pipe is mounted on the bottom side of the outer cylinder, and a second solenoid valve is mounted on the discharge pipe. A temperature sensor is mounted on the top plate of the outer cylinder, and the probe of the temperature sensor is located inside the inner cylinder. After the raw materials are mixed, the inner cylinder generates high-frequency vibration. Under the action of high-frequency vibration, the feeding speed of the rubber compound can be accelerated, while avoiding the rubber compound from adhering to the inner wall of the inner cylinder, which is beneficial to improving the feeding efficiency of the raw materials.

[0008] The advantages of this utility model are:

[0009] 1. This utility model dries wood powder by spraying hot air upwards through vents. After drying, the rotor drives the fan blades to rotate at high speed, creating a pressure difference between the exhaust chamber and the drying chamber. Under the action of the pressure difference, the wood powder and hot air in the drying chamber flow together. When passing through the second filter screen in front of the exhaust groove, the wood powder is blocked by the second filter screen and then enters the inner cylinder through the discharge pipe, realizing the conveying of wood powder. This structure allows the wood powder to be directly poured into the inner cylinder after the wood powder is pre-treated for drying, avoiding contact between the wood powder and the outside environment and preventing the wood powder from absorbing moisture again, thus ensuring the dryness of the wood powder and improving its drying properties.

[0010] 2. After the raw materials are mixed, the inner cylinder generates high-frequency vibration. Under the action of high-frequency vibration, the feeding speed of the adhesive can be accelerated, while avoiding the adhesive from adhering to the inner wall of the inner cylinder, which is beneficial to improving the feeding efficiency of the raw materials. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a first-person perspective 3D structural diagram;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the drying oven;

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the drying structure;

[0015] Figure 4 A three-dimensional structural diagram of the pulse electromagnet.

[0016] Figure 5 This is a schematic diagram of the internal three-dimensional structure of the outer cylinder.

[0017] In the diagram: 1. Base; 2. Outer cylinder; 3. PLC controller; 4. Drying oven; 401. Drying chamber; 402. Air inlet chamber; 403. Exhaust chamber; 404. Air vent; 405. Heating plate; 406. Drive motor; 407. Fan blade; 408. Exhaust trough; 409. First filter screen; 410. Second filter screen; 411. Hopper; 412. Fan; 413. First air guide pipe; 414. Second air guide pipe; 415. Discharge pipe; 5. Lifting trough; 501. Spring; 502. Lifting block; 503. Iron sheet; 504. Pulse electromagnet; 6. Inner cylinder; 7. Heating chamber; 701. Adjusting pipe; 702. Pressure relief safety valve; 703. Pressure gauge; 8. First motor; 801. Stirring rod; 802. Stirring blade; 803. Feed pipe; 804. Discharge pipe; 805. Temperature sensor. Detailed Implementation

[0018] 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 scope of protection of the present utility model.

[0019] Please see Figure 1-3As shown, a raw material mixing device with a drying structure includes a base 1, an outer cylinder 2 mounted on the base 1 via a bracket, a PLC controller 3 mounted on the outer cylinder 2, and a drying structure mounted on the outer cylinder 2. The drying structure includes a drying chamber 4, which contains a drying chamber 401, an air inlet chamber 402, and an exhaust chamber 403. An air hole 404 is provided on the partition between the drying chamber 401 and the air inlet chamber 402. A heating plate 405 with a mesh structure is installed on the inner wall of the air inlet chamber 402. An exhaust groove 408 is provided on the partition between the drying chamber 401 and the exhaust chamber 403. A first filter screen 409 is installed on the partition between the drying chamber 401 and the air inlet chamber 402, and a second filter screen 410 is installed on the partition between the drying chamber 401 and the exhaust chamber 403. A hopper 411 is mounted on the drying chamber 4, and a first sealing cover is installed on the hopper 411. A fan 412 is mounted on the base 1 via a base. The fan 412 and the air inlet chamber 403 are connected to the drying chamber 403. A first air guide pipe 413 is connected between the air chambers 402. A drive motor 406 is mounted on the inner wall of the exhaust chamber 403 via a base. A rotor is mounted on the output shaft of the drive motor 406, and multiple fan blades 407 are mounted on the rotor. A second air guide pipe 414 is mounted on the side wall of the exhaust chamber 403, and a first solenoid valve is mounted on the second air guide pipe 414. During operation, existing raw material mixing devices have difficulty drying and pre-treating the wood powder in the raw materials during the preparation of adhesives. Usually, after the wood powder is dried, the conveying device in the preparation process puts the dried wood powder into the mixing device. However, the wood powder is prone to secondary moisture absorption during the conveying process, resulting in poor drying properties. In the process of manufacturing wooden containers, adhesives are required. During the preparation of adhesives, the raw materials need to be uniformly mixed. Before mixing the raw materials, the hygroscopic fillers and wood powder in the raw materials need to be dried and pre-treated to avoid the moisture affecting the curing speed of the adhesive.

[0020] The process involves pouring the resin, curing agent, solvent, and other raw materials of the adhesive into the inner cylinder 6 through the feed pipe 803, then closing the second sealing cover, pouring the wood powder into the hopper 411, and then closing the first sealing cover. The drying structure then operates, with the wood powder entering the drying chamber 401 from the hopper 411. Simultaneously, the PLC controller 3 controls the fan 412 to operate, introducing cold air into the air inlet chamber 402 through the first air guide pipe 413. The PLC controller 3 also controls the heating plate 405 to operate. When the cold air passes through the heating plate 405, it is heated into hot air, which is then sprayed upwards from the air hole 404, causing the wood powder particles to suspend and enter a "boiling" state, achieving full gas-solid contact and drying the wood powder. The hot air temperature is 80℃, and the drying time is 30 minutes. After drying, the moisture content of the wood powder can be reduced to <1%.

[0021] After drying, PLC controller 3 controls the opening of the square butterfly valve (model BD-SF400-G-P0.6), which opens the discharge pipe 415 of the drying chamber 4. Then, PLC controller 3 controls the drive motor 406 to operate, causing the rotor to rotate at high speed. The rotor drives the fan blades 407 to rotate at high speed, creating a pressure difference between the exhaust chamber 403 and the drying chamber 401. Under this pressure difference, hot air flows from the drying chamber 401 into the exhaust chamber 403, and then enters the heating chamber 7 through the second air guide pipe 414. During this process, the wood powder in the drying chamber 401 flows together with the hot air. When it passes through the second filter screen 410 before the exhaust groove 408, the wood powder is blocked by the second filter screen 410 and then enters the inner cylinder 6 through the discharge pipe 415, thus achieving the conveying of the wood powder. This structure, after the wood powder is pre-treated for drying, directly pours the wood powder into the inner cylinder 6, avoiding contact between the wood powder and the outside environment, preventing secondary moisture absorption, and ensuring the dryness of the wood powder.

[0022] Before stirring the adhesive raw materials, they need to be heated, usually using a heating plate or by introducing hot air into the heating chamber 7. During the drying process of the wood powder, the hot air removes moisture from the surface and pores of the wood powder, and then enters the heating chamber 7 through the second air guide pipe 414. The hot air in the heating chamber 7 heats the raw materials in the inner cylinder 6, achieving preheating of the raw materials. Although the inner cylinder 6 and the outer cylinder 2 are slidably connected, the diametrical tolerance of the inner cylinder 6 and the outer cylinder 2 is controlled at IT7 grade, which ensures the sealing of the heating chamber 7 and prevents hot air from entering the inner cylinder 6. After preheating is completed, the second air guide pipe 414... The first solenoid valve on 14 is closed. During this process, the pressure gauge 703 (model PT124B-202) and the pressure relief safety valve 702 (model HC-2000Ex) monitor the air pressure in the heating chamber 7 in real time and send a detection signal to the PLC controller 3. When the pressure value exceeds the set value, the PLC controller 3 controls the pressure relief safety valve 702 to open and release pressure, preventing the inner cylinder 6 and outer cylinder 2 from bursting. By reusing the waste gas generated by the drying structure, the hot air is recycled, which can save energy. This structure can ensure the dryness of the wood powder and is conducive to improving the dryness of the wood powder.

[0023] Please see Figure 4-5As shown, the outer cylinder 2 has multiple lifting grooves 5 on its inner wall. A spring 501 is installed in each lifting groove 5, and a lifting block 502 is installed on the spring 501. An inner cylinder 6 is installed on the lifting block 502, and an iron plate 503 is installed on the inner cylinder 6. A pulse electromagnet 504 is installed on the inner wall of the outer cylinder 2. A heating chamber 7 is located between the outer cylinder 2 and the inner cylinder 6. The heating chamber 7 is connected to the second air guide pipe 414. A regulating pipe 701 is installed on the side wall of the outer cylinder 2. A pressure relief safety valve 702 and a pressure gauge 703 are installed on the regulating pipe 701. A discharge port is located on the bottom side of the drying chamber 4. A discharge pipe 415 is installed at the discharge port of the drying chamber 4, and a square butterfly valve is installed on the discharge pipe 415. A first motor 8 is mounted on the top plate of the outer cylinder 2 via a base. A stirring rod 801 is mounted on the output shaft of the first motor 8, and a stirring blade 802 is mounted on the stirring rod 801. A feed pipe 803 is mounted on the outer cylinder 2, and a second sealing cover is mounted on the feed pipe 803. A discharge pipe 804 is mounted on the bottom side of the outer cylinder 2, and a second solenoid valve is mounted on the discharge pipe 804. A temperature sensor 805 is mounted on the top plate of the outer cylinder 2, and the probe of the temperature sensor 805 is located inside the inner cylinder 6. During operation, existing raw material mixing devices have difficulty in quickly discharging the raw materials after mixing the adhesive, resulting in low discharging efficiency. The first motor 8 is controlled by a PLC controller 3. When machine 8 operates, it drives the stirring rod 801 to rotate. The stirring rod 801 drives the stirring blade 802 to uniformly stir the raw materials, achieving uniform mixing. After the raw materials are mixed, the second solenoid valve on the discharge pipe 804 is opened by the PLC controller 3, and the raw materials are discharged from the discharge pipe 804. During this process, the PLC controller 3 sends a sinusoidal current through a wire into the pulse electromagnet 504, causing the pulse electromagnet 504 to become magnetized. The sinusoidal current will switch between positive and negative half-cycles. At the moment of switching between positive and negative half-cycles, the sinusoidal current disappears. The frequency of the positive and negative half-cycle switching of the sinusoidal current is very high, so the pulse electromagnet 504 produces... The generated magnetic field frequency is also very high, and the magnetic force generated by the pulse electromagnet 504 is also instantaneous. The instant the pulse electromagnet 504 generates magnetic force, it attracts the iron plate 503 to move towards the pulse electromagnet 504. The iron plate 503 drives the inner cylinder 6 to move vertically upward. After that, the magnetic force disappears. Under the tension of the spring 501, the spring 501 pulls the lifting block 502 to move vertically downward. The lifting block 502 drives the inner cylinder 6 to move vertically downward. Because the switching frequency of the magnetic field generation and disappearance is extremely high, the inner cylinder 6 generates high-frequency vibration. Under the action of high-frequency vibration force, the feeding speed of the rubber material can be accelerated, while avoiding the rubber material from adhering to the inner wall of the inner cylinder 6, which is conducive to improving the feeding efficiency of raw materials.

[0024] Working principle: Existing raw material mixing devices struggle to pre-dry the wood flour in the adhesive preparation process. Typically, after drying, the wood flour is fed into the mixing device via a conveying device. However, the wood flour easily absorbs moisture during transport, resulting in poor drying properties. Since adhesives are used in the manufacturing of wooden containers, and the raw materials need to be uniformly mixed during adhesive preparation, the hygroscopic fillers and wood flour in the raw materials need to be pre-dried before mixing to prevent moisture from affecting the adhesive's curing speed. This is achieved by using the adhesive resin... Raw materials such as glue, curing agent, and solvent are poured into the inner cylinder 6 through the feed pipe 803. Then, the second sealing cap is closed, and wood powder is poured into the hopper 411. The first sealing cap is then closed, and the drying structure begins operation. Wood powder enters the drying chamber 401 from the hopper 411. Simultaneously, the PLC controller 3 controls the fan 412 to operate, introducing cold air into the air inlet chamber 402 through the first air guide pipe 413. The PLC controller 3 also controls the heating plate 405 to operate. When the cold air passes through the heating plate 405, it is heated into hot air, which is then sprayed upwards from the air hole 404, causing the wood powder particles to suspend and enter a "boiling" state. The air and solid components are in full contact, achieving the drying of the wood flour. The hot air temperature is 80℃, and the drying time is 30 minutes. After drying, the moisture content of the wood flour is reduced to <1%. After drying, PLC controller 3 controls the opening of the square butterfly valve (model BD-SF400-G-P0.6), which opens the discharge pipe 415 of the drying chamber 4. Then, PLC controller 3 controls the drive motor 406 to operate, driving the rotor to rotate at high speed. The rotor drives the fan blades 407 to rotate at high speed, creating a pressure difference between the exhaust chamber 403 and the drying chamber 401. Under the action of this pressure difference, hot air flows from the drying chamber 401 to the exhaust chamber 403. Then, the wood powder enters the heating chamber 7 through the second air guide pipe 414. During this process, the wood powder in the drying chamber 401 flows together with the hot air. When it passes through the second filter screen 410 before the exhaust groove 408, the wood powder is blocked by the second filter screen 410. Then, it enters the inner cylinder 6 through the discharge pipe 415, realizing the conveying of wood powder. After the wood powder is pre-treated for drying, this structure directly pours the wood powder into the inner cylinder 6, avoiding contact between the wood powder and the outside world and preventing the wood powder from absorbing moisture again, thus ensuring the dryness of the wood powder. Before stirring the raw materials of the adhesive, the raw materials need to be heated, usually by using a heating plate or by introducing hot air into the heating chamber 7.During the drying process of wood flour, hot air removes moisture from the surface and capillaries of the wood flour. The hot air then enters the heating chamber 7 through the second air duct 414. The hot air in the heating chamber 7 preheats the raw material in the inner cylinder 6. Although the inner cylinder 6 and outer cylinder 2 are slidably connected, their diametrical tolerances are controlled at IT7 level, ensuring the sealing of the heating chamber 7 and preventing hot air from entering the inner cylinder 6. After preheating, the first solenoid valve on the second air duct 414 closes. During this process, the pressure gauge 703 (model PT124B-202) and the pressure relief safety valve 702 (model HC-) are used. 2000Ex, the pressure gauge 703 monitors the air pressure in the heating chamber 7 in real time and sends a detection signal to the PLC controller 3. When the pressure value exceeds the set value, the PLC controller 3 controls the pressure relief safety valve 702 to open and release pressure, preventing the inner cylinder 6 and outer cylinder 2 from bursting. By reusing the waste gas generated by the drying structure, hot air is recovered and reused, saving energy. This structure can ensure the dryness of wood powder and is beneficial to improving the dryness of wood powder. The existing raw material mixing device has difficulty in quickly feeding the raw materials after mixing the adhesive, resulting in low feeding efficiency. The PLC controller 3 controls the first motor 8. Operation drives the stirring rod 801 to rotate, which in turn drives the stirring blade 802 to uniformly stir the raw materials, achieving uniform mixing. After the raw materials are mixed, the second solenoid valve on the discharge pipe 804 is opened by the PLC controller 3, and the raw materials are discharged from the discharge pipe 804. During this process, the PLC controller 3 sends a sinusoidal current through a wire into the pulse electromagnet 504, causing the pulse electromagnet 504 to become magnetized. The sinusoidal current switches between positive and negative half-cycles. At the moment of switching between the positive and negative half-cycles of the sinusoidal current, the sinusoidal current disappears. The frequency of the positive and negative half-cycle switching of the sinusoidal current is very high, thus the pulse electromagnet 504 produces... The generated magnetic field frequency is also very high, and the magnetic force generated by the pulse electromagnet 504 is instantaneous. The instantaneous magnetic force generated by the pulse electromagnet 504 attracts the iron plate 503 to move towards the pulse electromagnet 504. The iron plate 503 drives the inner cylinder 6 to move vertically upwards. Afterwards, the magnetic force disappears, and under the tension of the spring 501, the spring 501 pulls the lifting block 502 to move vertically downwards. The lifting block 502 drives the inner cylinder 6 to move vertically downwards. Because the switching frequency of the magnetic field generation and disappearance is extremely high, the inner cylinder 6 generates high-frequency vibration. Under the action of the high-frequency vibration force, the feeding speed of the rubber material can be accelerated, while preventing the rubber material from adhering to the inner wall of the inner cylinder 6, which is beneficial to improving the feeding efficiency of raw materials.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A raw material mixing device with a drying structure, characterized in that: Includes a base (1), on which an outer cylinder (2) is mounted via a bracket, on which a PLC controller (3) is mounted, and on which a drying structure is mounted. The drying structure includes a drying chamber (4), which has a drying chamber (401), an air inlet chamber (402), and an exhaust chamber (403). An air vent (404) is provided on the partition between the drying chamber (401) and the air inlet chamber (402). A heating plate (405) with a mesh structure is installed on the inner wall of the air inlet chamber (402). An exhaust groove (408) is provided on the partition between the drying chamber (401) and the exhaust chamber (403). A first filter screen (409) is installed on the partition between the drying chamber (401) and the air inlet chamber (402), and a second filter screen (410) is installed on the partition between the drying chamber (401) and the exhaust chamber (403). A hopper (411) is installed on the drying box (4), and a first sealing cover is installed on the hopper (411). A fan (412) is installed on the base (1) through a base, and a first air guide pipe (413) is connected between the fan (412) and the air inlet chamber (402).

2. The raw material mixing device with a drying structure according to claim 1, characterized in that: A drive motor (406) is mounted on the inner wall of the exhaust chamber (403) via a base. A rotor is mounted on the output shaft of the drive motor (406), and multiple fan blades (407) are mounted on the rotor.

3. The raw material mixing device with a drying structure according to claim 1, characterized in that: A second air guide pipe (414) is installed on the side wall of the exhaust chamber (403), and a first solenoid valve is installed on the second air guide pipe (414).

4. A raw material mixing device with a drying structure according to claim 1, characterized in that: The outer cylinder (2) has multiple lifting grooves (5) on its inner wall. A spring (501) is installed in the lifting groove (5). A lifting block (502) is installed on the spring (501). An inner cylinder (6) is installed on the lifting block (502). An iron plate (503) is installed on the inner cylinder (6). A pulse electromagnet (504) is installed on the inner wall of the outer cylinder (2).

5. A raw material mixing device with a drying structure according to claim 1, characterized in that: The outer cylinder (2) and the inner cylinder (6) are connected to a heating chamber (7), which is connected to a second air guide pipe (414). An adjusting pipe (701) is installed on the side wall of the outer cylinder (2). A pressure relief safety valve (702) and a pressure gauge (703) are installed on the adjusting pipe (701). A discharge port is opened on the bottom side of the drying box (4). A discharge pipe (415) is installed at the discharge port of the drying box (4). A square butterfly valve is installed on the discharge pipe (415).

6. A raw material mixing device with a drying structure according to claim 1, characterized in that: A first motor (8) is mounted on the top plate of the outer cylinder (2) via a base. A stirring rod (801) is mounted on the output shaft of the first motor (8). A stirring blade (802) is mounted on the stirring rod (801). A feed pipe (803) is mounted on the outer cylinder (2). A second sealing cover is mounted on the feed pipe (803). A discharge pipe (804) is mounted on the bottom side of the outer cylinder (2). A second solenoid valve is mounted on the discharge pipe (804). A temperature sensor (805) is mounted on the top plate of the outer cylinder (2). The probe of the temperature sensor (805) is located inside the inner cylinder (6).

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