A mixing tank

Abstract

This utility model relates to a mixing and blending tank. It includes a main base and a batching tank. A lifting cylinder and a lifting auger are installed inside the batching tank. A stirring paddle is mounted on the lifting auger. It also includes a lifting drive structure. A discharge port and multiple inlet ports are installed at the bottom of the batching tank. A discharge device is installed on the discharge port, and a feeding conveyor is installed on each inlet port. It also includes multiple sets of quantitative feeding devices, each including an auger feeding assembly. A storage hopper is installed at the inlet of the auger feeding assembly. The discharge port of the auger feeding assembly is connected to the inlet of the feeding conveyor, and a discharge dust cover is installed at the connection point. A gas pipeline and a fan are connected to the discharge dust cover. It also includes several weighing sensors. This utility model can realize automatic quantitative batching of various raw materials, eliminating the need for multiple weighing operations by personnel, improving the accuracy of batching, and ensuring thorough mixing of raw materials.

Description

Technical Field

[0001] This utility model belongs to the field of mixing equipment technology, and in particular relates to a mixing tank. Background Technology

[0002] Bio-based materials refer to a new type of material manufactured using renewable biomass or raw materials obtained through biological processes, such as biological, chemical, and physical methods. Examples include bioplastics and biomass functional polymer materials.

[0003] In the preparation of bio-based materials, multiple raw materials need to be mixed and stirred, and then the thoroughly mixed materials are granulated, that is, the above-mentioned bio-based material mixture is processed into granules for later transportation and use. For the preparation of bio-based materials, when large-scale production is involved, large-scale mixing and blending equipment is required to mix and blend large quantities of raw materials, and then a granulator is used to granulate the bio-based material mixture. Therefore, the mixing effect and working efficiency of the mixing and blending equipment become important indicators for evaluating the efficiency of the bio-based material preparation process and the quality of the finished product.

[0004] Existing mixing and blending devices have a relatively simple structure, mainly consisting of a mixing tank containing a simple stirring component. This rotating component agitates the mixture within the tank. During the process of adding raw materials to the mixing tank, multiple manual weighing operations are required to ensure accurate proportions, which impacts the production efficiency of the mixing and blending device. Furthermore, adding all the weighed raw materials into the equipment for uniform mixing results in incomplete mixing, thus affecting the quality of the finished product. Utility Model Content

[0005] This invention provides a mixing tank with a reasonable structural design to solve the technical problems existing in the prior art. This invention can realize automatic quantitative batching of various raw materials, eliminating the need for multiple weighing operations by personnel, improving the accuracy of batching, and ensuring thorough mixing of raw materials.

[0006] The technical solution adopted by this utility model to solve the technical problems existing in the prior art is as follows: A mixing tank includes a main base, on which a batching tank is mounted by a bracket. A lifting cylinder shell is mounted at the center of the batching tank via several rods. Gaps for material flow are left between the upper end of the lifting cylinder shell and the top surface of the inner cavity of the batching tank, and between the lower end of the lifting cylinder shell and the bottom surface of the inner cavity of the batching tank. An auger, rotatably connected to the batching tank and used for lifting materials, is installed inside the lifting cylinder shell. A stirring paddle located above the upper end of the lifting cylinder shell is mounted on the auger. A lifting drive structure for driving the auger to rotate is also included. A discharge port and multiple inlet ports are installed at the lower part of the batching tank. A discharge device is installed at the discharge port, and a feeding conveyor is installed at each inlet. Each feeding conveyor is connected to the main base via a weighing bracket. The system also includes multiple sets of quantitative feeding devices, each corresponding to one of the feeding conveyors, for supplying a specific quantity of material to the corresponding feeding conveyor. Each quantitative feeding device includes an auger feeding assembly, with a storage hopper installed at the inlet of the auger feeding assembly. The discharge port of the auger feeding assembly is connected to the inlet of the feeding conveyor, and a discharge dust cover is installed at the connection point. A gas pipeline and a fan are connected to the discharge dust cover. The system also includes several weighing sensors installed between the auger feeding assembly and the weighing bracket.

[0007] The advantages and positive effects of this utility model are as follows: This utility model provides a mixing tank that, through multiple sets of quantitative feeding devices, can automatically and quantitatively weigh and feed various raw materials, eliminating the need for multiple weighing operations by personnel, thus improving the accuracy and efficiency of batching. The feeding and conveying device can gradually and evenly transfer the raw materials quantitatively weighed by the feeding devices into the batching tank, avoiding the agglomeration of materials caused by large-scale material input, which affects the uniformity of material mixing. Simultaneously, it eliminates the need for manual feeding operations, improving work efficiency and reducing labor intensity. By setting up an lifting cylinder shell in conjunction with a rotating lifting auger and stirring paddle, the material conveyed into the batching tank can be lifted upwards, and the material overflowing from the upper end of the lifting cylinder shell can be agitated, causing the material to fall downwards and outwards, achieving the purpose of top-down material throwing. Repeated lifting and throwing operations ensure thorough mixing of various raw materials while preventing agglomeration. This utility model can achieve automatic quantitative batching of various raw materials, eliminating the need for multiple weighing operations by personnel, improving the accuracy of batching, and ensuring thorough mixing of raw materials.

[0008] Preferably, the auger feeding assembly includes two weighing plates arranged vertically, connected by several weighing sensors; it also includes an auger housing mounted on the upper weighing plate, a material inlet on the outer wall of the auger housing, a feeding hopper mounted at the material inlet, and a storage hopper mounted on the feeding hopper; a feeding chute is connected to the open end of the auger housing, and a feeding auger is rotatably connected to the inner cavity of the auger housing and the feeding chute; it also includes a feeding motor mounted on the auger housing for driving the feeding auger to rotate; a flap control valve and a feeding outlet are installed at the lower end of the feeding chute, the feeding outlet is inserted into the inlet of the feeding conveying device, and a dust cover is installed on the feeding outlet and covers the inlet of the feeding conveying device.

[0009] Preferably, the feeding and conveying device includes a feeding housing structure that is installed in connection with the inlet pipe, a conveying auger passing through the feeding housing structure, a feeding wheel mechanism that is close to the closed end of the feeding housing structure and installed on the conveying auger, and a conveying drive mechanism for driving the conveying auger to rotate.

[0010] Preferably, the feeding housing structure includes a feeding cylinder shell installed on the weighing bracket, the open end of the feeding cylinder shell being connected to the inlet of the feeding pipe, a feeding feed cylinder being installed at the inlet of the feeding cylinder shell, the lower port of the feeding outlet being inserted into the feeding feed cylinder, and a dust cover being installed outside the upper port of the feeding feed cylinder.

[0011] Preferably, the feeding wheel mechanism includes a blade mounting wheel keyed to the shaft of the conveying auger, and a plurality of feeding blades distributed circumferentially are mounted on the outer wall of the blade mounting wheel. The outer end of each feeding blade is shovel-shaped and fits against the inner wall of the feeding housing structure.

[0012] Preferably, the unloading device includes a discharge cylinder shell that is installed in connection with the discharge pipe, a discharge port is provided at the outer end of the discharge cylinder shell, a discharge auger that is rotatably connected to the discharge cylinder shell is installed inside the discharge cylinder shell, and a discharge drive structure for driving the discharge auger to rotate.

[0013] Preferably, a pipe opening connected to the inner cavity of the feeding cylinder is installed at the upper part of the feeding cylinder, and a gas pipeline is installed at the pipe opening and connected to the blower. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the front sectional view of the present invention;

[0015] Figure 2 This is a schematic diagram of the main sectional view of the feeding and conveying device and the quantitative feeding device in this utility model;

[0016] Figure 3This is a schematic diagram of the internal structure of the material feeding and conveying device in this utility model.

[0017] In the diagram: 1. Weighing support; 2. Feeding and conveying device; 2-1. Conveying drive mechanism; 2-2. Feeding wheel mechanism; 2-2-1. Feeding blade; 2-2-2. Blade mounting wheel; 2-3. Feeding cylinder shell; 2-4. Conveying auger; 2-5. Feeding inlet cylinder; 3. Quantitative feeding device; 3-1. Discharge dust cover; 3-2. Feeding outlet; 3-3. Weighing sensor; 3-4. Weighing base plate; 3-5. Feeding... 3-6. Material motor; 3-7. Storage hopper; 3-8. Feeding auger; 3-9. Material cylinder inlet; 3-10. Feeding feed box; 3-11. Auger shell; 3-12. Feeding discharge cylinder; 4. Batching tank; 5. Lifting cylinder shell; 6. Lifting auger; 7. Agitator; 8. Lifting drive structure; 9. Discharge auger; 10. Discharge drive structure; 11. Discharge cylinder shell; 12. Discharge port; 13. Feed port; 14. Main base. Detailed Implementation

[0018] To further understand the invention content, features, and effects of this utility model, the following embodiments are provided in detail:

[0019] Please see Figure 1 The mixing tank of this utility model includes a base 14, on which a batching tank 4 is mounted via a bracket. A lifting cylinder shell 5 is mounted at the center of the batching tank 4 via several rods. Gaps for material flow are provided between the upper end of the lifting cylinder shell 5 and the top surface of the inner cavity of the batching tank 4, and gaps for material flow are also provided between the lower end of the lifting cylinder shell 5 and the bottom surface of the inner cavity of the batching tank 4. An auger 6, rotatably connected to the batching tank 4 and used for lifting materials, is inserted inside the lifting cylinder shell 5. A lifting auger 6 is mounted on the lifting auger 6. The stirring paddle 7 above the upper port of the lifting cylinder shell 5 also includes a lifting drive structure 8 for driving the lifting auger 6 to rotate; the lifting drive structure 8 includes a drive motor mounted on the outer wall of the batching tank 4, and a pulley drive pair is installed between the output shaft of the drive motor and the upper end of the lifting auger 6. The pulley drive pair includes a driving pulley keyed to the output shaft of the drive motor and a driven pulley keyed to the upper end of the lifting auger 6. Several belts are connected between the driving pulley and the driven pulley.

[0020] like Figure 1As shown, a discharge port 12 and multiple inlet ports 13 are installed at the lower part of the mixing tank 4. A discharge device is installed on the discharge port 12, and a feeding conveying device 2 is installed on each inlet port 13. Each feeding conveying device 2 is connected to the main base 14 through a weighing bracket 1. It also includes multiple sets of quantitative feeding devices 3, which are respectively set one-to-one with the multiple feeding conveying devices 2, for supplying a quantitative amount of material to the corresponding feeding conveying device 2.

[0021] See further Figure 2 The aforementioned quantitative feeding device 3 includes an auger feeding assembly, with a storage hopper 3-6 installed at the inlet of the auger feeding assembly. The outlet of the auger feeding assembly is connected to the inlet of the feeding and conveying device 2, and a discharge dust cover 3-1 is provided at the connection point. A gas pipeline and a fan are connected to the discharge dust cover 3-1. It also includes several weighing sensors 3-3 installed between the auger feeding assembly and the weighing support 1. Furthermore, to prevent raw material contamination and moisture absorption, a top cover is provided on the top of the storage hopper 3-6, with an inlet installed on the top cover, and a latching cover is fastened to the opening of the inlet.

[0022] In addition, the aforementioned auger feeding assembly includes two weighing base plates 3-4 arranged vertically, connected by several weighing sensors 3-3. In this embodiment, three sets of weighing sensors 3-3 are provided. The auger feeding assembly also includes an auger housing 3-10 mounted on the upper weighing base plate 3-4. A material inlet 3-8 is provided on the outer wall of the auger housing 3-10, and a feeding box 3-9 is installed at the material inlet 3-8. A storage hopper 3-6 is installed on the feeding box 3-9. A feeding lower cylinder 3-11 is connected to the open end of the auger housing 3-10. To prevent dust generated during operation from dispersing into the workshop, a pipe communicating with its inner cavity is installed on the upper part of the feeding lower cylinder 3-11. A gas pipeline is installed at the pipe, and the gas pipeline is connected to a fan.

[0023] A feeding auger 3-7 is rotatably connected to the inner cavity of the auger housing 3-10 and the feeding cylinder 3-11. A feeding motor 3-5 is also installed on the auger housing 3-10 to drive the feeding auger 3-7 to rotate. A flap control valve and a feeding outlet 3-2 are installed at the lower end of the feeding cylinder 3-11. The feeding outlet 3-2 is inserted into the inlet of the feeding conveying device 2. A dust cover 3-1 is installed on the feeding outlet 3-2 and covers the inlet of the feeding conveying device 2.

[0024] like Figure 2As shown, the aforementioned feeding and conveying device 2 includes a feeding housing structure that is connected to the corresponding feed inlet 13. A conveying auger 2-4 is installed inside the feeding housing structure. A material-pushing wheel mechanism 2-2 is installed on the conveying auger 2-4 adjacent to the closed end of the feeding housing structure. It also includes a conveying drive mechanism 2-1 for driving the conveying auger 2-4 to rotate. Through the feeding and conveying device 2, the material quantitatively weighed and supplied by the quantitative feeding device 3 can be gradually and evenly transferred to the batching tank 4, avoiding the agglomeration of material caused by a large amount of material being added at once, which would affect the uniformity of raw material mixing. To further improve the dispersibility of the raw material, the end of the aforementioned conveying auger 2-4 extends to the connection interface between the feed inlet 13 and the batching tank 4.

[0025] The aforementioned feeding housing structure includes a feeding cylinder shell 2-3 mounted on the weighing support 1. The open end of the feeding cylinder shell 2-3 is connected to the inlet pipe 13. A feeding inlet cylinder 2-5 is installed at the inlet of the feeding cylinder shell 2-3. The lower port of the feeding outlet 3-2 is inserted into the feeding inlet cylinder 2-5. A dust cover 3-1 is installed over the upper port of the feeding inlet cylinder 2-5. Through this arrangement, dust generated during the transfer of material from the outlet of the self-quantitative feeding device 3 to the inlet of the feeding conveying device 2 can be collected centrally, preventing dust pollution of the working environment and its impact on the health of workers.

[0026] In addition, the aforementioned conveying drive mechanism 2-1 includes a drive motor mounted on the weighing support 1, and a transmission pair is installed between the drive motor and the end of the conveying auger 2-4. The aforementioned transmission pair can be a pulley transmission pair or a sprocket transmission pair. In this embodiment, a pulley transmission pair is used, including a driving pulley keyed to the output shaft of the drive motor, and a driven pulley keyed to the end of the conveying auger 2-4. Several belts are connected between the driving pulley and the driven pulley.

[0027] See further Figure 3 The aforementioned material-dispensing wheel mechanism 2-2 includes a blade mounting wheel 2-2-2 keyed to the shaft of the conveying auger 2-4. Several circumferentially distributed material-dispensing blades 2-2-1 are mounted on the outer wall of the blade mounting wheel 2-2-2. The outer end of each material-dispensing blade 2-2-1 is shovel-shaped and fits against the inner wall of the feeding housing structure. The outer end of each material-dispensing blade 2-2-1 fits against the inner wall of the closed end of the feeding cylinder shell 2-3. In actual operation, the material-dispensing wheel mechanism 2-2 rotates with the conveying auger 2-4, thereby agitating and disturbing the material accumulated at the closed end of the feeding cylinder shell 2-3. This ensures that all the material quantitatively supplied by the quantitative feeding device 3 is transferred to the batching tank 4 by the feeding conveying device 2, improving the accuracy of batching.

[0028] See further Figure 1The aforementioned unloading device includes a discharge cylinder shell 11 that is connected to the discharge port 12. A discharge port is provided at the outer end of the discharge cylinder shell 11. A discharge auger 9, rotatably connected to the discharge cylinder shell 11, is installed inside the discharge cylinder shell 11. The device also includes a discharge drive structure 10 for driving the discharge auger 9 to rotate. The discharge drive structure 10 includes a drive motor mounted on a base 14. A pulley drive pair is installed between the drive motor and the outer end of the discharge auger 9. Specifically, the drive drive structure 10 includes a driving pulley keyed to the output shaft of the drive motor and a driven pulley keyed to the outer end of the discharge auger 9. Several drive belts are installed between the driving pulley and the driven pulley.

[0029] In addition, an electrical control console is installed on the main base 14. The electrical control console includes a PLC controller and a touch screen connected to the PLC controller. The feeding and conveying device 2, the quantitative feeding device 3, the lifting drive structure 8, and the discharge drive structure 10 are all connected to the control terminal of the PLC controller. Several weighing sensors 3-3 are all connected to the detection terminal of the PLC controller. The PLC controller receives the detection information from the weighing sensors 3-3, acquires and displays the detection information on the touch screen, and automatically controls the corresponding actions of each component after judgment, or sends instructions through the touch screen. After receiving the instructions, the PLC controller controls the corresponding actions of each component.

[0030] Working principle:

[0031] During operation, various raw materials used to prepare bio-based materials are stored in hoppers 3-6 of the corresponding quantitative feeding devices 3. Weighing sensors 3-3 can detect the weight of the materials in hoppers 3-6 in real time. When batching is required, the PLC controller controls the motors in the lifting drive structure 8, as well as the motors in the corresponding feeding conveyor 2 and quantitative feeding devices 3, to start synchronously. The feeding auger 3-7 in the quantitative feeding device 3 rotates, gradually conveying materials into the feeding discharge cylinder 3-11. The materials in the feeding discharge cylinder 3-11 fall into the feeding conveyor 2 under gravity and are gradually and evenly transferred to the batching tank 4 by the rotating conveying auger 2-4. During this conveying process, the value detected by the weighing sensor 3-3 gradually decreases.

[0032] Once the difference between the real-time value detected by the weighing sensor 3-3 and the initial value reaches the set weight, the weighing sensor 3-3 promptly feeds back to the PLC controller. The PLC controller controls the flap control valve in the quantitative feeding device 3 to close the outlet of the feeding cylinder 3-11 and controls the feeding motor 3-5 to stop running, thereby realizing the quantitative weighing of each solid raw material. The corresponding feeding conveying device 2 gradually and evenly transfers the quantitatively weighed raw material to the batching tank 4.

[0033] Simultaneously, the rotating lifting auger 6 lifts the material transferred to the batching tank 4 upwards along the lifting cylinder shell 5, causing the lifted material to fall back into the batching tank 4 from the upper end of the lifting cylinder shell 5. During this process, the stirring paddle 7, which rotates with the lifting auger 6, can disturb the material overflowing from the upper end of the lifting cylinder shell 5, causing the material to fall downwards and outwards, achieving the purpose of throwing the material from top to bottom. Repeating the lifting and throwing operation can ensure that various raw materials are fully mixed, while avoiding the phenomenon of material clumping. After the mixing operation is completed, the PLC controller controls the motor in the discharge drive structure 10 to start, driving the discharge auger 9 to rotate, gradually transferring the material in the batching tank 4 to the outside of the batching tank 4, and finally realizing the unloading operation.

Claims

1. A stirred compounding tank characterized by: The system includes a base (14), on which a mixing tank (4) is mounted via a bracket. A lifting cylinder shell (5) is mounted at the center of the mixing tank (4) via several rods. Gaps for material flow are provided between the upper end of the lifting cylinder shell (5) and the top surface of the inner cavity of the mixing tank (4), and between the lower end of the lifting cylinder shell (5) and the bottom surface of the inner cavity of the mixing tank (4). A lifting auger (6) rotatably connected to the mixing tank (4) for lifting materials is installed inside the lifting cylinder shell (5). A stirring paddle (7) is mounted on the lifting auger (6) above the upper end of the lifting cylinder shell (5). The system also includes a lifting drive structure (8) for driving the lifting auger (6) to rotate. A discharge port (12) and multiple inlet ports (13) are installed at the lower part of the mixing tank (4). A discharge device is installed on the discharge port (12). Each feed inlet (13) is equipped with a feeding conveyor (2), and each feeding conveyor (2) is connected to the main base (14) through a weighing bracket (1). It also includes multiple sets of quantitative feeding devices (3) that are respectively set one-to-one with the multiple feeding conveyors (2) to supply a quantitative amount of material to the corresponding feeding conveyor (2). The quantitative feeding device (3) includes an auger feeding assembly, a storage hopper (3-6) is installed at the feed inlet of the auger feeding assembly, the discharge outlet of the auger feeding assembly is connected to the feed inlet of the feeding conveyor (2), and a discharge dust cover (3-1) is set at the connection. A gas pipeline and a fan are connected to the discharge dust cover (3-1). It also includes several weighing sensors (3-3) installed between the auger feeding assembly and the weighing bracket (1).

2. The agitated mixing tank of claim 1 wherein: The auger feeding assembly includes two weighing plates (3-4) arranged vertically, connected by several weighing sensors (3-3); it also includes an auger housing (3-10) mounted on the upper weighing plate (3-4), a material inlet (3-8) on the outer wall of the auger housing (3-10) and a feeding hopper (3-9) installed at the material inlet (3-8), and a storage hopper (3-6) mounted on the feeding hopper (3-9); a lower feeding cylinder (3-1) is connected to the open end of the auger housing (3-10). 1) A feeding auger (3-7) is rotatably connected to the inner cavity of the auger housing (3-10) and the feeding auger cylinder (3-11). A feeding motor (3-5) is also installed on the auger housing (3-10) to drive the feeding auger (3-7) to rotate. A flap control valve and a feeding outlet (3-2) are installed at the lower port of the feeding auger cylinder (3-11). The feeding outlet (3-2) is inserted into the inlet of the feeding conveying device (2). The discharge dust cover (3-1) is installed on the feeding outlet (3-2) and covers the inlet of the feeding conveying device (2).

3. The mixing tank as described in claim 2, characterized in that: The feeding and conveying device (2) includes a feeding housing structure that is installed in connection with the feed inlet (13), a conveying auger (2-4) is installed inside the feeding housing structure, a feeding wheel mechanism (2-2) that is close to the closed end of the feeding housing structure is installed on the conveying auger (2-4), and a conveying drive mechanism (2-1) for driving the conveying auger (2-4) to rotate.

4. The mixing tank as described in claim 3, characterized in that: The feeding housing structure includes a feeding cylinder shell (2-3) installed on the weighing bracket (1). The open end of the feeding cylinder shell (2-3) is connected to the feed inlet (13). A feeding feed cylinder (2-5) is installed at the feed inlet of the feeding cylinder shell (2-3). The lower port of the feeding outlet (3-2) is inserted into the feeding feed cylinder (2-5). The discharge dust cover (3-1) is installed outside the upper port of the feeding feed cylinder (2-5).

5. The mixing tank as described in claim 3, characterized in that: The feeding wheel mechanism (2-2) includes a blade mounting wheel (2-2-2) keyed to the shaft of the conveying auger (2-4). Several feeding blades (2-2-1) are mounted on the outer wall of the blade mounting wheel (2-2-2) in a circumferentially distributed manner. The outer end of each feeding blade (2-2-1) is shovel-shaped and fits against the inner wall of the feeding housing structure.

6. The mixing tank as described in claim 1, characterized in that: The unloading device includes a discharge cylinder shell (11) that is connected to the discharge port (12), a discharge port is provided at the outer end of the discharge cylinder shell (11), a discharge auger (9) that is rotatably connected to the discharge cylinder shell (11) is installed inside the discharge cylinder shell (11), and a discharge drive structure (10) for driving the discharge auger (9) to rotate.

7. The mixing tank as described in claim 2, characterized in that: A pipe opening connected to the inner cavity of the feeding cylinder (3-11) is installed at the upper part of the feeding cylinder. A gas pipeline is installed at the pipe opening and the gas pipeline is connected to the blower.

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