A powder stirring device

Abstract

The utility model discloses a powder stirring device, including stirring cylinder, transmission mechanism and oil delivery mechanism. Oil delivery mechanism is located in the side of stirring cylinder, and is connected inside through oil delivery pipe. The detachable connection of top lifting feed cylinder is arranged at the top of stirring cylinder, and the bottom is connected with top lifting discharge cylinder through electromagnetic valve. Transmission mechanism is composed of controller, angle encoder, motor, gear A, gear B and transmission chain, and the motor drives the rotation of stirring cylinder through transmission chain, and the controller coordinates the operation of each part. The utility model discloses through closed loop control system and realizes the automatic accurate centering of stirring cylinder and upper and lower top lifting cylinder, improves the sealing property and stability, reduces the artificial dependence and operating strength, and electromagnetic valve prevents leakage, guarantees the processing quality, and the structure is reasonable, and the degree of automation is high, is applicable to the industry of high cleanness and high uniformity, and the application prospect is wide.

Description

Technical Field

[0001] This utility model relates to the field of powder mixing technology, specifically to a powder stirring device. Background Technology

[0002] In powder processing, mixing devices are widely used as key equipment in various fields such as food, pharmaceuticals, chemicals, and new materials. They are mainly used to achieve uniform mixing of powder materials with liquid additives, such as oils and binders, to meet the requirements of subsequent processes such as granulation, tableting, or coating. However, existing powder mixing devices adopt a split structure design. The mixing cylinder needs to be fed into the material through a feeding mechanism and discharged through a discharge port after mixing. The mixing cylinder usually needs to be connected and fixed with two lifting mechanisms, but in actual operation, due to manufacturing tolerances, installation deviations, and mechanical wear caused by long-term operation, it is difficult to achieve precise alignment of the interface between the mixing device and the upper and lower lifting systems. This leads to problems such as poor sealing, loose connections, and even equipment jamming. This not only affects the smoothness of material transportation but may also introduce external pollution or cause dust leakage, posing safety hazards. In addition, if the mixing cylinder cannot be aligned during lifting and docking, it is easy to cause flange eccentricity, deformation or damage of the sealing ring, thereby affecting the stability of the overall structure.

[0003] Currently, most systems still rely on manual observation and adjustment to complete the alignment operation, which is not only labor-intensive and inefficient, but also highly dependent on the operator's experience, making it difficult to guarantee alignment accuracy. Although some equipment has attempted to introduce mechanical limiting structures such as guide columns and positioning pins to improve alignment performance, these structures have poor adjustment flexibility, high requirements for initial installation accuracy, and are inconvenient to use. Therefore, there is an urgent need in the existing technology for a powder mixing device that can solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a powder mixing device that allows for precise self-alignment of the mixing drum with the upper and lower lifting mechanisms, thereby improving the convenience and efficiency of loading and unloading materials and optimizing the quality of powder mixing and processing.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A powder mixing device includes a mixing cylinder, a transmission mechanism, and an oil conveying mechanism. The oil conveying mechanism is fixedly installed on the side of the mixing cylinder and communicates with the interior of the mixing cylinder through an oil conveying pipe. A lifting feed cylinder is detachably connected to the top of the mixing cylinder, and a solenoid valve is provided at the bottom. A lifting discharge cylinder is detachably connected to the end of the solenoid valve. The transmission mechanism includes a controller, an angle encoder, a motor, gear A, gear B, and a transmission chain. The motor is fixedly installed on the side of the mixing cylinder, with its output end connected to gear A and its tail end connected to the angle encoder. Gear B is fixedly installed on the mixing cylinder. The transmission chain meshes with the teeth of gear A and gear B, forming a closed meshing transmission circuit. The controller is located on the side of the motor and is electrically connected to the lifting feed cylinder, the lifting discharge cylinder, the solenoid valve, the angle encoder, the motor, and the oil conveying mechanism.

[0006] In use, the powder material to be mixed is first fed through a lifting feed cylinder. Driven by a lifting mechanism, the lifting feed cylinder moves downwards and approaches the mixing cylinder. When it approaches the docking position, the controller receives real-time position feedback signals from an angle encoder and, combined with a preset alignment program, automatically adjusts the motor's speed and start / stop. Gear A drives the transmission chain and gear B to rotate, thereby fine-tuning the spatial posture of the mixing cylinder and achieving dynamic self-alignment with the lifting feed cylinder interface, thus completing a tight connection. During the mixing process, an oil delivery mechanism injects a measured amount of oil or binder into the mixing cylinder through an oil delivery pipe. The motor drives the transmission chain... The chain drives the mixing drum to rotate, achieving thorough mixing of powder and liquid. During the process, the solenoid valve remains closed to effectively prevent raw material leakage from the bottom. After mixing, the lifting discharge cylinder moves upward and approaches the bottom of the mixing drum. Similarly, the controller adjusts the motor to drive the transmission chain and gear system to achieve precise alignment between the mixing drum and the lifting discharge cylinder. Then, the solenoid valve is opened, and the material is discharged through the lifting discharge cylinder under gravity. After discharge, the lifting discharge cylinder returns to its original position, moving downward away from the mixing drum. Throughout the entire loading and unloading process, the lifting feed cylinder and the lifting discharge cylinder move in opposite directions, completing the docking and separation actions of feeding and discharging respectively.

[0007] Furthermore, the middle of the stirring cylinder is a cavity, and an annular slide rail is fixedly installed inside the cavity. Several sliders are evenly arranged inside the annular slide rail. The sliders move along the annular slide rail, and an annular oil injection pipe is fixedly connected inside the slider. An oil inlet pipe that cooperates with the oil delivery pipe is fixedly installed at the top of the oil injection pipe, and an oil outlet is provided at the bottom. Since the mixing drum needs to rotate for stirring during operation, and the oil injection pipe and oil delivery pipe need to remain fixedly connected to ensure oil circuit stability, an annular slide rail is installed in the middle cavity of the mixing drum. Multiple sliding blocks are evenly installed on the slide rail, and an annular oil injection pipe is fixedly connected to the slider. The oil inlet pipe at the top of the oil injection pipe is connected to the fixed oil delivery pipe. When the mixing drum rotates, the annular slide rail rotates with the drum, while the slider, oil injection pipe, and oil delivery pipe remain stationary. The dynamic connection between the rotating parts and the fixed oil circuit is achieved through the cooperation of the annular slide rail and the slider, which can ensure continuous and reliable oil supply, and at the same time achieve circumferential uniform oil spraying, improving mixing uniformity and stirring efficiency. An oil injector can be installed at the oil outlet, which can further disperse the oil evenly.

[0008] Furthermore, the oil delivery mechanism also includes an oil storage tank and an oil injection pump. The oil storage tank is fixedly installed on the side of the mixing drum. The oil injection pump is connected to a controller, with its inlet end connected to the oil storage tank and its outlet end connected to the oil delivery pipe. The oil storage tank, fixed to the side of the mixing drum, is used to store oil or binder. The inlet end of the oil injection pump is connected to the oil storage tank, and its outlet end is connected to the oil delivery pipe. The controller regulates the operation of the oil injection pump, delivering the oil in the oil storage tank to the oil delivery pipe at a set flow rate and pressure. The oil then enters the injection pipe through the inlet pipe and is evenly sprayed into the mixing drum, achieving a stable supply of oil. This improves the controllability and uniformity of the mixing process, avoiding uneven or excessive manual refueling. At the same time, the pressurization effect of the oil injection pump enhances the atomization effect, allowing the oil to be more fully dispersed in the powder, improving the mixing quality and efficiency.

[0009] Furthermore, the oil delivery mechanism also includes a backup oil pump and a pressure gauge connected to the controller. The pressure gauge is fixedly installed in the oil delivery pipe. The inlet of the backup oil pump is connected to the oil storage tank, and the outlet is connected to the oil delivery pipe. The backup oil pump and the main injection pump are connected in parallel. The controller monitors the pressure in the oil delivery pipe by receiving data from the pressure gauge, or monitors the operating status of the pump. When the pressure in the oil delivery pipe is insufficient or the injection pump malfunctions, the backup oil pump is automatically started to ensure a continuous and stable delivery of oil to the oil delivery pipe. This design improves the reliability and continuity of the oil delivery system and ensures the stability of the production process.

[0010] Furthermore, a weighing sensor connected to the controller is also installed at the bottom of the oil tank. The weighing sensor at the bottom of the oil tank, connected to the controller, is used to monitor the weight of the oil in the tank in real time and feed the weight data back to the controller in real time. The controller automatically adjusts the operating parameters of the fuel injection pump according to the preset amount of fuel and the current weight of the oil to achieve precise quantitative fuel supply, avoid insufficient or excessive fuel supply, and facilitate the fuel supply operation during the powder mixing process.

[0011] Furthermore, the oil delivery mechanism also includes a backup oil storage tank connected to an oil supply pump. The oil supply pump is connected to a controller, and its output is connected to the oil storage tank. The backup oil storage tank is connected to the main oil storage tank via the oil supply pump, which is electrically connected to the controller. When the oil level in the main oil storage tank drops to a set lower limit due to consumption, the weighing sensor transmits a signal to the controller, which automatically starts the oil supply pump to replenish the main oil storage tank with oil from the backup tank, ensuring a continuous oil supply to the main tank. This structure achieves automatic oil replenishment, avoiding production interruptions due to untimely manual refueling, and improving the system's continuous operation capability and automation level.

[0012] Furthermore, it also includes a mounting frame, which has a three-layer structure. The middle layer houses the rotatable mixing drum, the top layer houses the lifting feed cylinder, and the bottom layer houses the lifting discharge cylinder. Motors and oil supply mechanisms are installed on both sides of the mounting frame. The mounting frame achieves structural integration and a rational spatial layout. The motors drive the transmission chain to rotate the mixing drum, while the oil supply mechanisms provide oil to the injection system. This mounting frame has a stable structure, clear layers, and facilitates the installation of each component. It also provides stable support for the rotational movement of the mixing drum and ensures its coaxiality when docking with the upper and lower lifting cylinders. Combined with the controller's coordinated control of the motors and lifting mechanisms, the attitude of the mixing drum can be flexibly adjusted during docking, achieving automatic centering and improving the stability, safety, and efficiency of the equipment operation.

[0013] Furthermore, the lifting feed cylinder includes a mounting shell A, with a feed pipe fixedly installed in the middle of the mounting shell A, and a pair of cylinders A symmetrically arranged at the top; the fixed end of the cylinder A is fixedly installed on the top layer of the mounting frame, and the telescopic end is connected to the inside of the mounting shell A; the lifting discharge cylinder includes a mounting shell B, with a discharge bin in the middle of the mounting shell B, and a pair of cylinders B symmetrically arranged at the bottom; the fixed end of the cylinder B is fixedly installed on the bottom layer of the mounting frame, and the telescopic end is connected to the inside of the mounting shell B; cylinders A and B are respectively connected to a controller. The synchronous telescopic movement of cylinders A drives the mounting shell A and the feed pipe to move up and down, achieving docking and separation from the top of the mixing drum. The movement of cylinders B controls the lifting and lowering of the discharge bin, completing docking and separation from the bottom of the mixing drum. This structure utilizes a symmetrical cylinder arrangement to ensure uniform force and smooth operation of the feed pipe and discharge bin during lifting, reducing the risk of uneven loading and jamming, improving docking accuracy and operational reliability, and, in conjunction with the controller, achieving automated lifting control, improving loading and unloading efficiency and the level of equipment automation.

[0014] Furthermore, the motor is a three-phase asynchronous motor; the controller is a microcontroller. The three-phase asynchronous motor has advantages such as simple structure, stable operation, convenient maintenance, wide power range, and adaptability to harsh working environments, making it suitable for the high-torque continuous rotation drive required by the mixing drum. The microcontroller is small in size, low in cost, and has high control precision. It can efficiently process signals from the angle encoder, weighing sensor, and the operating status of each pump, realizing the start / stop and speed regulation of the three-phase asynchronous motor, automatic switching between the injection pump and the standby pump, oil replenishment control of the supply pump, and self-alignment timing management of the mixing drum and the lifting mechanism.

[0015] An angle encoder monitors the rotation angle of the mixing drum in real time. After the mixing drum completes multiple 360-degree mixing operations, the angle encoder accurately captures the angle information, controls the mixing drum to stop rotating, and aligns it with the upper and lower lifting structures to ensure stability during loading and unloading.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. This utility model integrates a controller, an angle encoder, and a gear transmission chain to form a closed-loop adjustment system, achieving automatic and precise alignment between the mixing drum and the lifting feed and discharge drums. This effectively overcomes the misalignment problems caused by manufacturing errors, installation deviations, and mechanical wear, improving the sealing performance and structural stability of the connection. Simultaneously, it reduces reliance on manual adjustment, lowering operational difficulty and labor intensity. The solenoid valve ensures sealing during the mixing process, preventing material leakage and improving processing quality. The overall structure is rationally designed and highly automated, making it suitable for fields such as food, pharmaceuticals, and chemicals where high cleanliness and mixing uniformity are required. It has promising application prospects and significant promotional value.

[0017] 2. This utility model utilizes a ring slide rail and slider structure to ensure the oil injection pipe remains stationary while the mixing drum rotates, guaranteeing continuous oil supply and achieving uniform circumferential oil spraying. The oil delivery mechanism is equipped with a main or backup oil pump connected in parallel and pressure monitoring to improve oil supply reliability. The oil injection pump is controlled by a controller, combined with real-time feedback of oil quantity from a weighing sensor, to achieve precise quantitative oil supply. An additional backup oil storage tank and oil supply pump are added for automatic oil replenishment, preventing material interruption. The three-layer mounting frame is integrated, with the motor and oil delivery mechanism located on opposite sides, resulting in a compact and stable structure. The lifting feed cylinder and discharge cylinder are driven by symmetrical cylinders, ensuring smooth lifting and lowering. The controller enables automatic centering, improving docking accuracy and operational efficiency, and overall enhancing the automation, safety, and mixing quality of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model, which includes a pressure gauge and a weighing sensor.

[0020] Figure 3 This is a schematic diagram showing the connection between the annular track and the fuel injection pipe of this utility model.

[0021] Figure 4 This is a schematic diagram showing the connection relationship between the lifting feed cylinder and the lifting discharge cylinder of this utility model and the mixing cylinder.

[0022] Attached image labels: Mixing cylinder-1, Solenoid valve-11, Annular slide rail-12, Slider-13, Injection pipe-14, Inlet pipe-15, Outlet port-16, Transmission mechanism-2, Angle encoder-21, Motor-22, Gear A-23, Gear B-24, Transmission chain-25, Oil delivery mechanism-3, Oil delivery pipe-31, Oil storage tank-32, Injection pump-33, Backup oil pump-34, Pressure gauge-35, Weighing sensor-36, Backup oil storage tank-37, Oil supply pump-38, Lifting feed cylinder-4, Top mounting shell A-41, Feed pipe-42, Cylinder A-43, Lifting discharge cylinder-5, Mounting shell B-51, Cylinder B-52, Controller-6, Mounting bracket-7. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Example 1: A powder mixing device includes a mixing cylinder 1, a transmission mechanism 2, and an oil conveying mechanism 3. The oil conveying mechanism 3 is fixedly installed on the side of the mixing cylinder 1 and communicates with the interior of the mixing cylinder 1 through an oil conveying pipe 31. A lifting feed cylinder 4 is detachably connected to the top of the mixing cylinder 1, and a solenoid valve 11 is provided at the bottom. A lifting discharge cylinder 5 is detachably connected to the end of the solenoid valve 11. The transmission mechanism 2 includes a controller 6, an angle encoder 21, a motor 22, gear A 23, gear B 24, and a transmission mechanism. Chain 25; The motor 22 is fixedly installed on the side of the mixing drum 1, with its output end connected to gear A23 and its tail end connected to angle encoder 21. Gear B24 is fixedly installed on the mixing drum 1. The transmission chain 25 is meshed with the teeth of gear A23 and gear B24 to form a closed meshing transmission circuit. The controller 6 is located on the side of the motor 22 and is electrically connected to the lifting feed cylinder 4, the lifting discharge cylinder 5, the solenoid valve 11, the angle encoder 21, the motor 22 and the oil delivery mechanism 3.

[0025] In this embodiment, the powder material to be mixed is first fed through the lifting feed cylinder 4. At this time, the lifting feed cylinder 4 moves downwards and approaches the mixing cylinder 1 under the drive of the lifting mechanism. When it approaches the docking position, the controller 6 receives a real-time position feedback signal from the angle encoder 21 and, combined with a preset alignment program, automatically adjusts the speed and start / stop of the motor 22. Through gear A23, it drives the transmission chain 25 and gear B24 to rotate, thereby fine-tuning the spatial posture of the mixing cylinder 1 and achieving dynamic self-alignment with the interface of the lifting feed cylinder 4, thus completing a tight connection. During the mixing process, the oil delivery mechanism 3 injects a quantitative amount of oil or binder into the mixing cylinder 1 through the oil delivery pipe 31. The motor 22 drives the transmission chain 25 and gear B24 to rotate, thereby fine-tuning the spatial posture of the mixing cylinder 1 and achieving dynamic self-alignment with the interface of the lifting feed cylinder 4, thus completing a tight connection. Chain 25 drives the mixing drum 1 to rotate, achieving thorough mixing of powder and liquid. During the process, solenoid valve 11 remains closed to effectively prevent raw materials from leaking from the bottom. After mixing, the lifting discharge cylinder 5 moves upward and approaches the bottom of the mixing drum 1. Similarly, the controller 6 controls the motor 22 to drive the transmission chain 25 and gear system to adjust their posture, so that the mixing drum 1 and the lifting discharge cylinder 5 are precisely aligned and connected. Then, the solenoid valve 11 is opened, and the material is discharged through the lifting discharge cylinder 5 under the action of gravity. After the discharge is completed, the lifting discharge cylinder 5 moves downward away from the mixing drum 1 and resets. During the entire loading and unloading process, the lifting feed cylinder 4 and the lifting discharge cylinder 5 move in opposite directions, respectively completing the docking and separation actions of feeding and discharging.

[0026] Example 2: The difference from Example 1 is that the middle of the stirring cylinder 1 is a cavity, and an annular slide rail 12 is fixedly provided inside the cavity. Several sliders 13 are evenly provided inside the annular slide rail 12. The sliders 13 move along the annular slide rail 12, and an annular oil injection pipe 14 is fixedly connected inside the sliders 13. An oil inlet pipe 15 that cooperates with the oil delivery pipe 31 is fixedly provided at the top of the oil injection pipe 14, and an oil outlet 16 is provided at the bottom. Since the mixing drum 1 needs to rotate for stirring during operation, and the oil injection pipe 14 and the oil delivery pipe 31 need to remain fixedly connected to ensure the stability of the oil circuit, an annular slide rail 12 is set in the middle cavity of the mixing drum 1. Multiple sliding sliders 13 are evenly installed on the slide rail 12. The annular oil injection pipe 14 is fixedly connected to the slider 13. The oil inlet pipe 15 at the top of the oil injection pipe 14 is connected to the fixed oil delivery pipe 31. When the mixing drum 1 rotates, the annular slide rail 12 rotates with the drum, while the sliders 13, the oil injection pipe 14 and the oil delivery pipe 31 remain stationary. The dynamic connection between the rotating parts and the fixed oil circuit is achieved through the cooperation of the annular slide rail 12 and the sliders 13, which can ensure continuous and reliable oil supply, and at the same time achieve circumferential uniform oil spraying, improving the mixing uniformity and stirring efficiency. An oil injector can be installed at the oil outlet 16, which can disperse the oil more evenly.

[0027] It also includes a mounting frame 7, which has a three-layer structure. The middle layer is for mounting the rotatable mixing drum 1, the top layer is for mounting the lifting feed cylinder 4, and the bottom layer is for mounting the lifting discharge cylinder 5. A motor 22 and an oil supply mechanism 3 are respectively installed on both sides of the mounting frame 7. The mounting frame 7 achieves structural integration and a reasonable spatial layout. The motor 22 drives the transmission chain 25 to rotate the mixing drum 1, and the oil supply mechanism 3 provides oil to the oil injection system. The mounting frame 7 has a stable structure and clear layers, facilitating the installation of each component. It also provides stable support for the rotational movement of the mixing drum 1 and ensures its coaxiality when docking with the upper and lower lifting cylinders. Combined with the controller 6's coordinated control of the motor 22 and the lifting mechanism, the attitude of the mixing drum 1 can be flexibly adjusted during docking, achieving automatic centering and improving the stability, safety, and efficiency of equipment operation.

[0028] The lifting feed cylinder 4 includes a mounting shell A41, with a feed pipe 42 fixedly installed in the middle of the mounting shell A41, and a pair of cylinders A43 symmetrically arranged at the top; the fixed end of the cylinder A43 is fixedly installed on the top layer of the mounting frame 7, and the telescopic end is connected to the inside of the mounting shell A41; the lifting discharge cylinder 5 includes a mounting shell B51, with a discharge chamber in the middle of the mounting shell B51, and a pair of cylinders B52 symmetrically arranged at the bottom; the fixed end of the cylinder B52 is fixedly installed on the bottom layer of the mounting frame 7, and the telescopic end is connected to the inside of the mounting shell B51; the cylinders A43 and B52 are respectively connected to the controller 6. The mounting shell A41 and the feed pipe 42 are moved up and down synchronously by the cylinder A43 to achieve docking and separation with the top of the mixing drum 1. The discharge hopper is raised and lowered by the cylinder B52 to complete docking and separation with the bottom of the mixing drum 1. This structure uses a symmetrical cylinder arrangement to ensure that the feed pipe 42 and the discharge hopper are subjected to uniform force and run smoothly during the lifting process, reducing the risk of uneven load and jamming, improving docking accuracy and operation reliability. With the controller 6, automated lifting control is realized, improving the efficiency of loading and unloading and the level of equipment automation.

[0029] The motor 22 is a three-phase asynchronous motor; the controller 6 is a microcontroller. The motor 22 is a three-phase asynchronous motor, which has the advantages of simple structure, stable operation, convenient maintenance, wide power range and adaptability to harsh working environments. It is suitable for the high torque continuous rotation drive required by the stirring drum 1. The controller 6 is a microcontroller, which is small in size, low in cost and high in control precision. It can efficiently process signals from the angle encoder 21, the weighing sensor 36 and the operating status of each pump, realize the start and stop and speed regulation of the three-phase asynchronous motor, the automatic switching between the oil injection pump 33 and the standby oil pump 34, the oil replenishment control of the oil supply pump 38, and the self-alignment action timing management of the stirring drum 1 and the lifting mechanism.

[0030] Example 3: Unlike Example 1, the oil delivery mechanism 3 further includes an oil storage tank 32 and an oil injection pump 33. The oil storage tank 32 is fixedly installed on the side of the mixing drum 1. The oil injection pump 33 is connected to the controller 6, with its inlet end connected to the oil storage tank 32 and its outlet end connected to the oil delivery pipe 31. The oil storage tank 32, fixed to the side of the mixing drum 1, is used to store oil or binder. The inlet end of the oil injection pump 33 is connected to the oil storage tank 32, and its outlet end is connected to the oil delivery pipe 31. The controller 6 regulates the operation of the oil injection pump 33, delivering the oil in the oil storage tank 32 to the oil delivery pipe 31 according to a set flow rate and pressure. The oil then enters the injection pipe 14 through the inlet pipe 15 and is evenly sprayed into the mixing drum 1, achieving a stable oil supply. This improves the controllability and uniformity of the mixing process, avoiding uneven or excessive manual refueling. Simultaneously, the pressurization effect of the oil injection pump 33 enhances the atomization effect, allowing the oil to be more fully dispersed in the powder, improving the mixing quality and efficiency.

[0031] The oil delivery mechanism 3 also includes a backup oil pump 34 and a pressure gauge 35 connected to the controller 6. The pressure gauge 35 is fixedly installed in the oil delivery pipe 31. The inlet of the backup oil pump 34 is connected to the oil storage tank 32, and the outlet is connected to the oil delivery pipe 31. The backup oil pump 34 is connected in parallel with the main injection pump 33. The controller 6 monitors the pressure of the oil delivery pipe 31 by receiving data from the pressure gauge 35, or monitors the operating status of the pump body. When the pressure in the oil delivery pipe 31 is insufficient or the injection pump 33 malfunctions, the backup oil pump 34 is automatically started to ensure a continuous and stable delivery of oil to the oil delivery pipe 31. This design improves the reliability and continuity of the oil delivery system and can ensure the stability of the production process.

[0032] The bottom of the oil storage tank 32 is also equipped with a weighing sensor 36 connected to the controller 6. The weighing sensor 36 connected to the controller 6 is used to monitor the weight of the oil in the oil storage tank 32 in real time and feed the weight data back to the controller 6 in real time. The controller 6 automatically adjusts the operating parameters of the fuel injection pump 33 according to the preset fuel amount and the current oil weight to achieve precise quantitative fuel supply, avoid insufficient or excessive fueling, and facilitate the fueling operation during the powder mixing process.

[0033] The oil delivery mechanism 3 also includes a backup oil storage tank 37, which is connected to an oil supply pump 38. The oil supply pump 38 is connected to the controller 6, and its output is connected to the oil storage tank 32. The backup oil storage tank 37 is connected to the main oil storage tank 32 via the oil supply pump 38, which is electrically connected to the controller 6. When the oil level in the main oil storage tank 32 drops to a set lower limit due to consumption, the weighing sensor 36 transmits a signal to the controller 6, which automatically starts the oil supply pump 38 to replenish the oil in the backup oil storage tank 37 to the main oil storage tank 32, ensuring a continuous oil supply to the main oil storage tank 32. This structure realizes automatic oil replenishment, avoids production interruption due to untimely manual refueling, and improves the continuous operation capability and automation level of the system.

[0034] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A powder mixing device, characterized in that: The system includes a mixing drum (1), a transmission mechanism (2), and an oil delivery mechanism (3), wherein the oil delivery mechanism (3) is fixedly installed on the side of the mixing drum (1) and communicates with the interior of the mixing drum (1) through an oil delivery pipe (31); the top of the mixing drum (1) is detachably connected to a lifting feed cylinder (4), and the bottom is provided with a solenoid valve (11), the end of which is detachably connected to a lifting discharge cylinder (5); the transmission mechanism (2) includes a controller (6), an angle encoder (21), a motor (22), gear A (23), gear B (24), and a transmission chain (25); The motor (22) is fixedly installed on the side of the mixing drum (1), and its output end is connected to gear A (23), and its tail end is connected to angle encoder (21). Gear B (24) is fixedly installed on the mixing drum (1). The transmission chain (25) is meshed on the teeth of gear A (23) and gear B (24) to form a closed meshing transmission circuit. The controller (6) is installed on the side of the motor (22) and is electrically connected to the lifting feed cylinder (4), lifting discharge cylinder (5), solenoid valve (11), angle encoder (21), motor (22) and oil delivery mechanism (3).

2. The powder mixing device as described in claim 1, characterized in that: The middle of the stirring cylinder (1) is a cavity, and an annular slide rail (12) is fixedly provided inside the cavity. Several sliders (13) are evenly provided inside the annular slide rail (12). The sliders (13) move along the annular slide rail (12), and an annular oil injection pipe (14) is fixedly connected inside the slider (13). An oil inlet pipe (15) that cooperates with the oil delivery pipe (31) is fixedly provided at the top of the oil injection pipe (14), and an oil outlet (16) is provided at the bottom.

3. The powder mixing device as described in claim 1, characterized in that: The oil delivery mechanism (3) also includes an oil storage tank (32) and an oil injection pump (33). The oil storage tank (32) is fixedly installed on the side of the stirring cylinder (1). The oil injection pump (33) is connected to the controller (6), and the oil inlet end is connected to the oil storage tank (32), and the oil outlet end is connected to the oil delivery pipe (31).

4. The powder mixing device as described in claim 3, characterized in that: The oil delivery mechanism (3) also includes a backup oil pump (34) and a pressure gauge (35) connected to the controller (6). The pressure gauge (35) is fixedly installed in the oil delivery pipe (31). The backup oil pump (34) has an inlet end connected to the oil storage tank (32) and an outlet end connected to the oil delivery pipe (31).

5. A powder mixing device as described in any one of claims 3 or 4, characterized in that: The bottom of the oil storage tank (32) is also equipped with a weighing sensor (36) connected to the controller (6).

6. The powder mixing device as described in claim 3, characterized in that: The oil delivery mechanism (3) also includes a backup oil storage tank (37), which is connected to an oil supply pump (38); the oil supply pump (38) is connected to the controller (6), and its output end is connected to the oil storage tank (32).

7. The powder mixing device as described in claim 1, characterized in that: It also includes a mounting frame (7), which is a three-layer structure. The middle layer is a rotating mounting mixing cylinder (1), the top layer is a lifting feed cylinder (4), and the bottom layer is a lifting discharge cylinder (5). The mounting frame (7) is equipped with a motor (22) and an oil conveying mechanism (3) on both sides.

8. The powder mixing device as described in claim 7, characterized in that: The lifting feed cylinder (4) includes a mounting shell A (41), with a feed pipe (42) fixedly installed in the middle of the mounting shell A (41), and a pair of cylinders A (43) symmetrically arranged on the top. The fixed end of the cylinder A (43) is fixedly installed on the top layer of the mounting frame (7), and the telescopic end is connected to the inside of the mounting shell A (41). The lifting discharge cylinder (5) includes a mounting shell B (51), with a discharge chamber in the middle of the mounting shell B (51), and a pair of cylinders B (52) symmetrically arranged on the bottom. The fixed end of the cylinder B (52) is fixedly installed on the bottom layer of the mounting frame (7), and the telescopic end is connected to the inside of the mounting shell B (51). The cylinders A (43) and B (52) are respectively connected to the controller (6).

9. The powder mixing device as described in claim 1, characterized in that: The motor (22) is a three-phase asynchronous motor; the controller (6) is a microcontroller.

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