An automatic mixing and stirring device for an environment-friendly covering agent production line

Abstract

The application relates to an automatic mixing and stirring device of an environment-friendly covering agent production line, belonging to the technical field of covering agent production, which comprises a base, a mixing tank, a distribution device, a stirring shaft, a scraper, a driving motor and a discharging device. The mixing tank is provided with a feeding port and a discharging port, the distribution device drives the stirring shaft to mix and granulate materials through input and two output parts, and drives the scraper to remove the adhering materials on the tank wall. The distribution device makes the stirring shaft obtain high rotating speed, and the scraper outputs low speed and large torque. The mixing tank is pivotally connected with the base, so that the discharging angle can be adjusted; the discharging device is composed of an inserting plate, a spiral conveyor and a second telescopic cylinder, the inserting plate is designed in a wedge shape and cooperates with an eccentric scraper, and the inserting plate completes cleaning and seals the discharging port when being closed. In addition, a detachable top cover is arranged at the top of the mixing tank, so that maintenance is facilitated. The application has the advantages of simple structure, improved mixing uniformity, reduced energy consumption and automatic and complete discharging.

Description

Technical Field

[0001] This invention relates to the field of covering agent production technology, and in particular to an environmentally friendly automatic mixing and stirring device for a covering agent production line. Background Technology

[0002] In the current production process of environmentally friendly covering agents, mixing is a crucial step, directly affecting the quality and performance of the final product. However, existing mixing devices generally suffer from several technical defects and shortcomings, limiting further improvements in production efficiency and product quality. Firstly, in traditional mixing equipment, the tank design is often horizontal or fixed at a fixed angle, leading to uneven material distribution during mixing. Especially under static or low-speed mixing conditions, material tends to accumulate on one side of the tank, affecting mixing efficiency, increasing energy consumption, and reducing production efficiency. Secondly, most existing equipment uses a single power source to drive the mixing shaft, lacking effective auxiliary devices to clean material adhering to the tank walls and bottom. Over time, this untreated material easily clumps and solidifies, affecting the mixing quality of subsequent batches and increasing the workload and difficulty of manual cleaning, thus reducing production continuity and automation.

[0003] Furthermore, traditional unloading methods typically rely on gravity or simple mechanical vibration to assist discharge. These methods are often insufficient for materials with poor flowability or those that have undergone granulation, resulting in incomplete unloading. Residual material not only wastes resources but also requires manual intervention for secondary cleaning, increasing operational complexity and labor intensity. While some high-end equipment incorporates auxiliary devices such as automatic scrapers to mitigate these issues, their poor structural design—e.g., fixed scraper positions and limited movement trajectories—results in limited cleaning effectiveness and an inability to completely resolve material residue problems. These issues not only restrict the automation level of production lines but also negatively impact the overall production efficiency and economic benefits of environmentally friendly covering agents.

[0004] For example, Chinese patent (publication number CN222969751U) discloses a discharge structure and a mixer. This patent includes a mixing cylinder mounted on a frame, with a discharge port at the bottom for discharging material; a rotating shaft rotatably connected to the frame, with one end connected to a connecting rod assembly for driving the rotating shaft; and a blocking plate assembly connected to the outer periphery of the rotating shaft, with its top surface abutting the discharge port. While this patent solves the problem of existing hydraulically driven discharge methods being easily damaged by dust, its structure is relatively complex, and it also suffers from insufficient discharge.

[0005] Therefore, it is particularly necessary to develop an environmentally friendly automatic mixing and stirring device for a covering agent production line that can overcome the above-mentioned shortcomings and achieve efficient mixing, automatic cleaning, and thorough unloading. Summary of the Invention

[0006] To overcome the shortcomings of the prior art, the present invention discloses an automatic mixing and stirring device for an environmentally friendly covering agent production line.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0008] An automatic mixing and stirring device for an environmentally friendly covering agent production line includes:

[0009] The base, with its top tilted;

[0010] The mixing tank is installed on the sloping surface of the base, with a feed inlet at the top and a discharge outlet at the bottom extending from the lower end to the higher end of the mixing tank.

[0011] The transfer device is installed at the top of the mixing tank; it has an input section, a high-speed output section and a low-speed output section; the input section is coaxial with the mixing tank, the low-speed output section is coaxial with the input section, the high-speed output section is staggered with the input section, and the low-speed output section and the high-speed output section face opposite directions;

[0012] The stirring shaft is connected to the high-speed output unit of the transfer device; it is used for stirring mixed materials.

[0013] The scraper is connected to the low-speed output unit of the transfer device; it is used to clean the material adhering to the walls and bottom of the mixing tank.

[0014] The drive motor is connected to the input section of the transfer case.

[0015] The unloading device is installed at the discharge port of the mixing tank.

[0016] Preferably, the transfer device includes:

[0017] The connecting sleeve is coaxially and securely connected to the top of the mixing tank.

[0018] The housing is installed at the bottom of the connecting sleeve;

[0019] The input shaft extends through the housing, with one end connected to the output of the drive motor and the other end located inside the housing.

[0020] The first output shaft is located on one side of the input shaft and is rotatably connected to the housing, with the output end of the first output shaft extending through the top of the housing;

[0021] The second output shaft is located on the other side of the input shaft and is rotatably connected to the housing. The output end of the second output shaft extends out of the bottom of the housing. The stirring shaft is drivenly connected to the second output shaft.

[0022] The turntable is rotatably connected to the connecting sleeve on the same axis and is driven by the first output shaft; the scraper is fastened to the turntable.

[0023] Preferably, the input shaft is connected to the first output shaft, the input shaft to the second output shaft, and the first output shaft to the turntable via gears or synchronous belts.

[0024] Preferably, the reduction ratio between the input shaft and the first output shaft is 5 to 8:1, the reduction ratio between the first output shaft and the turntable is 5 to 8:1, and the reduction ratio between the input shaft and the second output shaft is 1:2 to 5.

[0025] Preferably, the scraper has an L-shaped structure, and its outer wall is provided with a nylon plate that can contact the tank wall and the bottom of the mixing tank.

[0026] Preferably, the mixing tank is rotatably connected to the base; the base includes:

[0027] Fixture;

[0028] A connecting frame is installed at the bottom of the mixing tank, and one end of the connecting frame is hinged to the corresponding fixed frame;

[0029] The first telescopic cylinder, installed between the fixed frame and the connecting frame, is used to drive the mixing tank to deflect.

[0030] Preferably, the unloading device includes:

[0031] The slide plate is movably and pull-out connected to the bottom outlet of the mixing tank, and the top of the slide plate is flush with the bottom of the mixing tank; the outlet of the mixing tank extends from the higher side of its bottom to the lower side;

[0032] A screw conveyor is located at the bottom of the insert plate, the top of the screw conveyor is open, and the top of the screw conveyor is securely connected to the bottom of the mixing tank around its perimeter;

[0033] The second telescopic cylinder is installed on one or both sides of the screw conveyor, and the telescopic end of the second telescopic cylinder is fastened to the insert plate.

[0034] Preferably, the insert plate has a wedge-shaped structure on the lower side of the bottom of the mixing tank, and an eccentric shovel is hinged to the lower side of the discharge port of the mixing tank. When the insert plate is opened, the eccentric shovel automatically deflects downward under its own gravity. When the insert plate is closed, it scrapes and cleans the slope surface of the wedge-shaped structure of the insert plate. When the insert plate is closed in place, the top of the eccentric shovel is flush with the bottom of the mixing tank and together with the insert plate, seals the discharge port of the mixing tank.

[0035] Preferably, the discharge port of the mixing tank is provided with a limiting block for limiting the upward and downward deflection angle of the eccentric shovel.

[0036] Preferably, the top of the mixing tank is detachably connected to a top cover; the transfer device and the drive motor are both fixedly connected to the top cover, and the top cover has a feed inlet on the side corresponding to the drive motor, and a feed funnel is installed at the feed inlet.

[0037] By employing the technical solution described above, the present invention has the following beneficial effects:

[0038] (1) The present invention has a simple structure. By tilting the mixing tank as a whole and installing it on a base with a suspended structure, the material naturally gathers to the lower side of the tank under the action of gravity. This not only facilitates the uniform distribution and granulation of the material during the mixing process, but also significantly reduces the energy consumption of mixing and effectively avoids the problem of uneven mixing caused by material accumulation in the high side area. At the same time, the suspended bottom design provides ample space for the unloading device, ensuring that the unloading process is not interfered with by the ground and improving the discharge efficiency.

[0039] (2) The split-drive device of the present invention has two output sections, which drive the stirring shaft and the scraper to operate independently. The stirring shaft is set towards the lower side of the tank, so that its rotation center is closer to the material concentration area, which enhances the shearing and dispersing ability of the accumulated material; the scraper rotates synchronously at low speed, continuously removing the material adhering to the tank wall and bottom, preventing agglomeration or solidification, which not only ensures the mixing quality, but also ensures thorough unloading, without the need for manual intervention, thus improving the automation level and continuous operation capability of the equipment. The split-drive device adopts a closed shell structure and achieves differentiated transmission through gears or synchronous belts: the stirring shaft adopts speed-increasing transmission to obtain high speed and enhance the mixing effect; the scraper obtains low-speed, high-torque output through two-stage reduction, ensuring stable and reliable scraping of the wall. The scraper is covered with a nylon plate, which effectively removes the adhering material while avoiding damage to the inner surface of the tank, and is especially suitable for the production of covering agents containing moisture or viscous components.

[0040] (3) The present invention further drives the mixing tank to deflect around the hinge point by a telescopic cylinder, maintains a preset working angle during the stirring stage to ensure the uniformity of mixing, and further increases the tilt angle during the unloading stage to accelerate the discharge of materials, reduce residues, and improve the equipment's adaptability to different material flow characteristics.

[0041] (4) The unloading device of the present invention adopts a structure of insert plate and screw conveyor. The top of the insert plate is flush with the bottom of the tank to eliminate dead corners for material accumulation. Its edge wedge design is linked with the eccentric shovel to automatically complete scraping and cleaning during the closing process of the insert plate. After closing in place, it forms a sealing surface with the shovel, effectively preventing leakage and dust dispersion during mixing. The setting of the limit block ensures that the shovel action is reliable and does not exceed the limit, taking into account both sealing performance and functionality. Attached Figure Description

[0042] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0043] Figure 2 This is a schematic diagram of the structure of the present invention;

[0044] Figure 3 This is a schematic diagram of the transfer case.

[0045] Figure 4 This is a schematic diagram of the unloading device.

[0046] Figure 5 This is a schematic diagram of the structure with the insert plate in the closed state.

[0047] Figure 6 This is a schematic diagram of the structure with the insert in the open position.

[0048] In the diagram: 1. Base; 1-1. Fixing frame; 1-2. Connecting frame; 1-3. First telescopic cylinder; 2. Mixing tank; 3. Dividing device; 3-1. Connecting sleeve; 3-2. Housing; 3-3. Input shaft; 3-4. First output shaft; 3-5. Second output shaft; 3-6. Turntable; 4. Stirring shaft; 5. Scraper; 6. Drive motor; 7. Unloading device; 7-1. Insert plate; 7-2. Screw conveyor; 7-3. Second telescopic cylinder; 7-4. Eccentric shovel; 7-5. Limiting block; 8. Nylon plate; 9. Top cover; 10. Feed hopper. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0050] In the description of this invention, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use. They are only used to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention.

[0051] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Example 1:

[0052] Combined with appendix Figures 1-2 An automatic mixing and stirring device for an environmentally friendly covering agent production line includes a base 1, a mixing tank 2, a transfer device 3, a stirring shaft 4, and a discharge device 7. The base 1 is mounted on a frame with its bottom suspended, providing ample space for the arrangement of the discharge device 7 and material discharge, avoiding interference from the ground that could affect discharge efficiency. The top of the base 1 is inclined, and the inclination angle can be set according to the material flow characteristics inside the mixing tank 2. The mixing tank 2 is fixedly installed on the inclined surface of the base 1, with its axis forming a certain angle with the horizontal plane. The top of the mixing tank 2 has a feed inlet for adding the proportioned components of the environmentally friendly covering agent; the bottom of the mixing tank 2 has a discharge outlet extending from the lower end to the higher end, improving discharge efficiency and reducing residue. The inclined design of the mixing tank 2 allows the internal material to naturally gather to the lower side when stationary or under low-speed stirring, which is beneficial for uniform material distribution and granulation during subsequent stirring, while reducing stirring energy consumption and preventing material accumulation on the higher side of the tank, thus avoiding uneven mixing.

[0053] A distribution device 3 is installed at the top of the mixing tank 2. The distribution device 3 has an input section, a low-speed output section, and a high-speed output section. The input section is coaxially arranged with the mixing tank 2, the low-speed output section is coaxial with the input section, and the high-speed output section is offset relative to the input section along the inclined direction of the mixing tank 2, so that the high-speed output section is located closer to the lower side of the mixing tank 2. The high-speed output section of the distribution device 3 outputs downwards and is driven by a stirring shaft 4. This structural design ensures that the rotation center of the stirring shaft 4 is biased towards the concentrated material area, improving stirring efficiency and enhancing the shearing and dispersing ability of the accumulated material. The stirring shaft 4 extends axially along the mixing tank 2 and is equipped with multiple stirring blades for high-speed stirring of the material in the mixing tank 2, achieving uniform mixing of components and preliminary granulation. (See attached diagram) Figure 2 As shown, since the stirring shaft 4 is eccentrically arranged, the stirring blades on the stirring shaft 4 are smaller in size than the stirring blades in the existing centrally arranged stirring shaft. At the same time, all components of the environmentally friendly covering agent are powder materials, and the resistance experienced by the stirring blades is small, which can increase the rotation speed of the stirring shaft 4, thereby increasing the stirring rate and shortening the mixing cycle.

[0054] The low-speed output section of the transfer device 3 faces upwards and is connected to a scraper 5. The scraper 5 is arranged along the inner wall of the mixing tank 2 to simultaneously clean the material adhering to the tank wall and bottom during the mixing process, preventing material from clumping or solidifying, ensuring mixing quality, and extending equipment life. During unloading, the scraper 5 forces the material out, ensuring thorough discharge. A drive motor 6 is installed at the top of the mixing tank 2. The output shaft of the drive motor 6 is connected to the input section of the transfer device 3 via a coupling, providing power to the entire mixing and scraping system. This drive layout is compact, with a clear transmission path, facilitating maintenance and effectively isolating the motor from dust.

[0055] A discharge device 7 is installed at the outlet of the mixing tank 2 to control the discharge process of the material after mixing and granulation. The discharge device 7 can be opened after the mixing is finished, so that the material can be discharged quickly and completely under the action of gravity and the kinetic energy of mixing, avoiding manual intervention and improving the degree of automation.

[0056] During use, the components of the environmentally friendly covering agent, prepared according to a predetermined ratio, are added into the mixing tank 2 through the feed inlet at the top. The drive motor 6 is started, driving the distribution device 3. The high-speed output of the distribution device 3 drives the stirring shaft 4 to rotate at high speed. The stirring blades exert strong shearing and tumbling action on the material, achieving efficient mixing and granulation. Simultaneously, the low-speed output of the distribution device 3 drives the scraper 5 to rotate synchronously at a lower speed. The scraper 5 continuously scrapes away wet or semi-dry material adhering to the tank wall and bottom, preventing material accumulation and hardening, and ensuring cleanliness inside the tank after each operation. After the mixing and granulation operation is completed, the drive motor 6 continues to run to maintain material flowability. At the same time, the unloading device 7 is activated, opening the discharge port to allow the material to be discharged smoothly. This process requires no machine shutdown for cleaning, significantly improving production continuity and operational efficiency. Compared with existing mixing and granulation devices, this embodiment has a simplified structure and high functional integration, achieving both efficient mixing and granulation and automatic tank self-cleaning and thorough unloading, effectively solving the problems of incomplete unloading and the need for manual cleaning in traditional equipment. Example 2:

[0057] Combined with appendix Figures 1-3 An environmentally friendly automatic mixing and stirring device for a covering agent production line, which differs from Embodiment 1 in that, based on Embodiment 1, as shown in the attached... Figure 3As shown, the transfer device 3 includes a connecting sleeve 3-1, a housing 3-2, and an input shaft 3-3. The connecting sleeve 3-1 is coaxially fastened to the top of the mixing tank 2 by bolts or flanges, ensuring that the transfer device 3 is stably installed in the center of the tank, avoiding vibration and displacement during operation, and improving transmission accuracy and structural reliability. The housing 3-2 is fixedly installed at the bottom of the connecting sleeve 3-1. The housing 3-2 is a closed structure used to house the transmission components and provide dust protection. The input shaft 3-3 movably passes through the center of the housing 3-2. Its upper end is connected to the output end of the drive motor 6 via a coupling, and its lower end extends into the housing 3-2, serving as the core of power input.

[0058] A first output shaft 3-4 is provided on one side of the input shaft 3-3. The first output shaft 3-4 is rotatably connected to the housing 3-2 via a bearing, and its output end extends upward through the top of the housing 3-2. A turntable 3-6 is coaxially rotatably connected to the outside of the connecting sleeve 3-1. The turntable 3-6 is located above the housing 3-2 and is connected to the extended end of the first output shaft 3-4 via a gear pair or synchronous belt drive to realize power transmission. The turntable 3-6 and the first output shaft 3-4 together constitute the low-speed output part of the transfer device 3. This transmission method has a compact structure and a stable transmission ratio, and can effectively convert the high-speed rotation of the input shaft 3-3 into the low-speed, high-torque output of the turntable 3-6, which is suitable for the wall scraping operation requirements. The scraper 5 is fastened to the turntable 3-6 by bolts or welding, and rotates synchronously with the turntable 3-6 to ensure that the movement trajectory of the scraper 5 matches the inner wall of the tank, realizing continuous scraping in the entire circumference.

[0059] Furthermore, the scraper 5 has an L-shaped structure, with its vertical section connected to the turntable 3-6 via a connecting rod, and its horizontal section extending along the bottom of the tank. A nylon plate 8 is fitted to the outer wall of the scraper 5. The nylon plate 8 has wear-resistant, corrosion-resistant, and low-friction coefficient properties, enabling it to make close contact with the tank wall and bottom of the mixing tank 2 without damaging the metal surface, while effectively removing adhering materials. It is particularly suitable for environmentally friendly covering agents containing moisture or viscous components. It should be noted that since the amount of material mixed in a single batch in the mixing tank 2 is limited, and the mixed material is all powder, and the operating speed of the scraper 5 is relatively low, the normal operation of the scraper 5 is not affected.

[0060] A second output shaft 3-5 is located on the other side of the input shaft 3-3. The second output shaft 3-5 is also rotatably connected to the housing 3-2 via bearings, with its output end extending downwards through the bottom of the housing 3-2. The second output shaft 3-5 serves as the high-speed output section of the transfer device 3. The stirring shaft 4 is connected to the second output shaft 3-5 via a coupling or flange to transmit power. This arrangement positions the stirring shaft 4 in the axially lower region of the mixing tank 2, closer to the material accumulation area, thus improving stirring efficiency.

[0061] Furthermore, the input shaft 3-3 is connected to the first output shaft 3-4, the input shaft 3-3 to the second output shaft 3-5, and the first output shaft 3-4 to the turntable 3-6 using gear meshing or synchronous belt transmission to ensure smooth transmission without slippage. Specifically, the reduction ratio between the input shaft 3-3 and the first output shaft 3-4 is set to 5 to 8:1, enabling the scraper 5 to achieve low-speed, high-torque output and meet the stable thrust required for scraping the wall. The reduction ratio between the first output shaft 3-4 and the turntable 3-6 is also 5 to 8:1, further reducing the rotational speed and ensuring smooth operation of the scraper 5. The transmission ratio between the input shaft 3-3 and the second output shaft 3-5 is 1:2 to 5, i.e., speed-increasing transmission, enabling the stirring shaft 4 to achieve a higher rotational speed and enhancing the material shearing and dispersion effect. This differentiated transmission design takes into account the different working conditions of stirring and scraping, improving the overall operating efficiency and functionality of the machine. Example 3:

[0062] Combined with appendix Figures 1-2 4. An environmentally friendly automatic mixing and stirring device for a covering agent production line, based on Embodiment 1 or 2, wherein the mixing tank 2 and the base 1 adopt a deflectable connection structure to achieve dynamic adjustment of the unloading angle. The base 1 includes a fixed frame 1-1, a connecting frame 1-2, and a first telescopic cylinder 1-3. The connecting frame 1-2 is fixedly installed on the outer side of the bottom of the mixing tank 2, serving as a connecting carrier between the tank and the base. One end of the connecting frame 1-2 is hinged to the corresponding position of the fixed frame 1-1 via a pin or hinge, forming a rotatable fulcrum, allowing the mixing tank 2 to deflect around this fulcrum in a vertical plane. The first telescopic cylinder 1-3 is installed between the fixed frame 1-1 and the connecting frame 1-2. The cylinder body end of the first telescopic cylinder 1-3 is hinged to the fixed frame 1-1, and the piston rod end is hinged to the connecting frame 1-2, driving the mixing tank 2 to deflect upwards or downwards around the hinge point through telescopic movement. This structure allows the mixing tank 2 to be further tilted during the unloading phase, increasing the angle between the discharge port and the horizontal plane, accelerating material discharge and reducing residue; during the normal mixing phase, it returns to the preset working tilt angle to ensure uniform mixing. This adjustable tilt angle design enhances the equipment's adaptability to different material characteristics, and is especially suitable for coating agent components with poor flowability or agglomeration. Example 4:

[0063] Because water needs to be added to each component of the environmentally friendly covering agent during the mixing process to facilitate subsequent granulation, and the material will have a certain viscosity after adding water, if the existing method of natural discharge through the conical discharge port is used for unloading, some material will adhere to the cylinder wall of the conical discharge port during unloading, resulting in insufficient unloading. In order to solve this technical problem, this implementation will be further improved.

[0064] Combined with appendix Figure 1 and 4~5, an automatic mixing and stirring device for an environmentally friendly covering agent production line, based on any of the embodiments in Examples 1 to 3, wherein the unloading device 7 includes a baffle plate 7-1, a screw conveyor 7-2, and a second telescopic cylinder 7-3. The baffle plate 7-1 is movably pulled and connected to the bottom discharge port of the mixing tank 2 by a sliding fit. The top surface of the baffle plate 7-1 is flush with the bottom of the mixing tank 2, ensuring that there are no steps to obstruct the flow of material in the tank and avoiding dead corners for material accumulation. The discharge port of the mixing tank 2 extends from the higher side to the lower side along the axial direction of the tank body, forming a strip-shaped opening of a certain length, so that the material naturally gathers to the full length of the discharge port under the action of gravity, improving the uniformity of unloading and the emptying rate.

[0065] A screw conveyor 7-2 is located directly below the insert plate 7-1. The screw conveyor 7-2 is a standard commercially available device with an open top, the open area of ​​which is perfectly aligned with the bottom discharge port of the mixing tank 2. The top of the screw conveyor 7-2 is welded or bolted to the bottom of the mixing tank 2, forming a sealed transition cavity to prevent dust spillage and ensure that the material falls directly into the conveyor. A second telescopic cylinder 7-3 is installed on one or both sides of the screw conveyor 7-2. The cylinder body of the second telescopic cylinder 7-3 is fixed to the mixing tank 2 or the screw conveyor 7-2, and its telescopic end is securely connected to the side of the insert plate 7-1. The telescopic movement controls the opening and closing of the insert plate 7-1, achieving automatic opening and closing control of the discharge port.

[0066] It should be noted that the edge of the insert plate 7-1 corresponding to the lower side of the bottom of the mixing tank 2 is designed with a wedge-shaped structure, with the wedge-shaped inclined surface facing inward. An eccentric scraper 7-4 is hinged to the lower side of the discharge port of the mixing tank 2. The hinge axis of the eccentric scraper 7-4 is off-center from its center of gravity, allowing it to naturally deflect downward under its own weight without external force. When the insert plate 7-1 is open, the eccentric scraper 7-4 hangs down under the action of gravity, without obstructing the material flow. During the closing process of the insert plate 7-1, its wedge-shaped inclined surface pushes the eccentric scraper 7-4 to flip upward, using the scraper blade to scrape and clean the upper surface of the wedge shape of the insert plate 7-1, removing any residual wet material or particles. When the insert plate 7-1 is fully closed, the eccentric scraper 7-4 falls back to the closed position under the combined action of gravity and limit, with its top surface flush with the bottom of the mixing tank 2, forming a complete sealing surface with the insert plate 7-1, effectively sealing the discharge port and preventing material leakage or dust dispersion during the mixing process.

[0067] Furthermore, the inner wall of the discharge port of the mixing tank 2 is provided with limiting blocks 7-5 for limiting the upper and lower deflection angles of the eccentric scraper 7-4. The limiting blocks 7-5 are respectively set at the upper and lower limit positions of the eccentric scraper 7-4 to ensure that it swings within the allowable range, avoid excessive overturning that could lead to structural interference or sealing failure, and at the same time ensure the reliable execution of the scraping action. Example 5:

[0068] Combined with appendix Figures 1-2 An environmentally friendly automatic mixing and stirring device for a covering agent production line is provided. Based on any of the embodiments in Examples 1 to 4, the top of the mixing tank 2 is detachably connected to a top cover 9 via a flange or quick-release clamp. This facilitates periodic opening of the top cover 9 for inspection, replacement, or cleaning of key components inside the mixing tank 2, such as the transfer device 3, stirring shaft 4, and scraper 5, improving equipment maintainability. The transfer device 3 and the drive motor 6 are both securely connected to the top cover 9 via flanges or mounting plates, making the power system modular and facilitating overall hoisting or disassembly. A feed inlet is provided on the side of the top cover 9 corresponding to the drive motor 6. A feed funnel 10 is installed at this inlet. The upper end of the feed funnel 10 is open for easy feeding, and the lower end communicates with the interior of the mixing tank 2. Its inner wall is smooth to reduce material adhesion. The feed funnel 10 can be equipped with a sealing cover to achieve a closed operation during the feeding process, preventing dust leakage and meeting environmental protection production requirements. This structural design ensures functional integrity while also considering operational convenience and equipment sealing.

[0069] The parts of this invention not described in detail are prior art. It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to encompass all changes falling within the meaning and scope of equivalents within this invention.

Claims

1. An automatic mixing and stirring device for an environmentally friendly covering agent production line, characterized in that, include: The base (1) has an inclined top; The mixing tank (2) is installed on the slope of the base (1). The mixing tank (2) is set along the inclined direction of the base (1) so that its axis forms a certain angle with the horizontal plane. The top of the mixing tank (2) is provided with a feed port and the bottom is provided with a discharge port extending from the lower end to the higher end of the mixing tank (2). The transfer device (3) is installed at the top inside the mixing tank (2); it has an input section, a high-speed output section and a low-speed output section; the input section is coaxial with the mixing tank (2), the low-speed output section is coaxial with the input section, the high-speed output section is staggered with the input section, the low-speed output section and the high-speed output section face opposite directions, and the high-speed output section is offset relative to the input section along the tilt direction of the mixing tank (2), so that the position of the high-speed output section is close to the lower side of the mixing tank (2); The stirring shaft (4) is eccentrically arranged and is connected to the high-speed output section of the drive unit (3) for stirring mixed materials. The scraper (5) is connected to the low-speed output section of the transfer device (3) for cleaning the material adhering to the wall and bottom of the mixing tank (2); The drive motor (6) is connected to the input section of the transfer device (3) for transmission; The unloading device (7) is installed at the discharge port of the mixing tank (2); The unloading device (7) includes: The insert plate (7-1) is movably pulled to the bottom outlet of the mixing tank (2), and the top of the insert plate (7-1) is flush with the bottom of the mixing tank (2); the outlet of the mixing tank (2) extends from the higher side of its bottom to the lower side; A screw conveyor (7-2) is located at the bottom of the insert plate (7-1). The top of the screw conveyor (7-2) is open, and the top of the screw conveyor (7-2) is tightly connected to the bottom of the mixing tank (2) around its perimeter. The second telescopic cylinder (7-3) is installed on one or both sides of the screw conveyor (7-2), and the telescopic end of the second telescopic cylinder (7-3) is fastened to the insert plate (7-1); The insert plate (7-1) has a wedge-shaped structure on the lower side of the bottom of the mixing tank (2), and an eccentric shovel (7-4) is hinged to the lower side of the discharge port of the mixing tank (2). When the insert plate (7-1) is opened, the eccentric shovel (7-4) automatically deflects downward under its own gravity. When the insert plate (7-1) is closed, it scrapes and cleans the slope surface of the wedge-shaped structure of the insert plate (7-1). When the insert plate (7-1) is closed in place, the top of the eccentric shovel (7-4) is flush with the bottom of the mixing tank (2) and together with the insert plate (7-1) seals the discharge port of the mixing tank (2). The mixing tank (2) is equipped with a limiting block (7-5) inside the discharge port to limit the upward and downward deflection angle of the eccentric shovel (7-4).

2. The automatic mixing and stirring device for the environmentally friendly covering agent production line as described in claim 1, characterized in that, The transfer device (3) includes: The connecting sleeve (3-1) is coaxially and securely connected to the top of the mixing tank (2); The housing (3-2) is installed at the bottom of the connecting sleeve (3-1); The input shaft (3-3) extends through the housing (3-2), with one end connected to the output end of the drive motor (6) and the other end located inside the housing (3-2); The first output shaft (3-4) is located on one side of the input shaft (3-3) and is rotatably connected to the housing (3-2). The output end of the first output shaft (3-4) extends out of the top of the housing (3-2). The second output shaft (3-5) is located on the other side of the input shaft (3-3) and is rotatably connected to the housing (3-2). The output end of the second output shaft (3-5) extends out of the bottom of the housing (3-2). The stirring shaft (4) is drivenly connected to the second output shaft (3-5). The turntable (3-6) is rotatably connected to the connecting sleeve (3-1) on the same axis and is connected to the first output shaft (3-4) for transmission; the scraper (5) is fastened to the turntable (3-6).

3. The automatic mixing and stirring device for the environmentally friendly covering agent production line as described in claim 2, characterized in that, The input shaft (3-3) is connected to the first output shaft (3-4), the input shaft (3-3) is connected to the second output shaft (3-5), and the first output shaft (3-4) is connected to the turntable (3-6) via gears or synchronous belts.

4. The automatic mixing and stirring device for the environmentally friendly covering agent production line as described in claim 3, characterized in that, The reduction ratio between the input shaft (3-3) and the first output shaft (3-4) is 5 to 8:1, the reduction ratio between the first output shaft (3-4) and the turntable (3-6) is 5 to 8:1, and the reduction ratio between the input shaft (3-3) and the second output shaft (3-5) is 1:2 to 5.

5. The automatic mixing and stirring device for the environmentally friendly covering agent production line as described in claim 1, characterized in that, The scraper (5) has an L-shaped structure and its outer wall is provided with a nylon plate (8) that can contact the tank wall and bottom of the mixing tank (2).

6. The automatic mixing and stirring device for the environmentally friendly covering agent production line as described in claim 1, characterized in that, The mixing tank (2) is rotatably connected to the base (1); the base (1) includes: Fixture (1-1); A connecting frame (1-2) is installed at the bottom of the mixing tank (2), and one end of the connecting frame (1-2) is hinged to the fixed frame (1-1); The first telescopic cylinder (1-3) is installed between the fixed frame (1-1) and the connecting frame (1-2) to drive the mixing tank (2) to deflect.

7. The automatic mixing and stirring device for the environmentally friendly covering agent production line as described in any one of claims 1 to 6, characterized in that, The mixing tank (2) is detachably connected to a top cover (9); the transfer device (3) and the drive motor (6) are both securely connected to the top cover (9). The top cover (9) has a feed inlet on the side corresponding to the drive motor (6), and a feed funnel (10) is installed at the feed inlet.

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