Scraping device for a cylindrical mixer and cylindrical mixer

Abstract

The utility model provides a kind of scraping device and cylinder mixer of cylinder mixer, comprising: shell body, transmission mechanism and scraping mechanism, the outer periphery of the feed end of shell body is around with electrically conductive part, electrically conductive part is connected with fixed brush and constitutes power supply;Transmission mechanism is set to feed end, is connected with power supply and power supply;Transmission mechanism includes ball screw, motor, driving wheel and driven wheel, the fixed end of ball screw is fixed on the inner wall of shell body above material lifting plate, the protruding end of ball screw protrudes feed end and is connected with driven wheel, driving wheel is installed on the output shaft of motor, and is engaged transmission with driven wheel, to drive ball screw rotation;Scraping mechanism includes ball nut and scraper, ball nut is threadedly engaged with ball screw, and scraper is fixedly connected with the ball nut;Transmission mechanism drives scraper to scrape material. And the application structure is simple, easy to operate, realizes automatic control, significantly improves scraping efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of industrial ironmaking production technology, and in particular to a scraping device for a cylindrical mixer and the cylindrical mixer itself. Background Technology

[0002] In the ironmaking process, ore powder is typically mixed with various materials such as fuel and flux in a mixer, granulated by a granulator, and then sintered. In current sintering processes, cylindrical mixers and cylindrical granulators are essential machines for material mixing and granulation. Due to their circular and symmetrical structure, cylindrical mixers are characterized by stable operation, good mixing effect, and excellent granulation performance, and are widely used in the steel production industry.

[0003] However, existing equipment often suffers from severe material accumulation on the inner wall of the cylinder due to mineral powder adhesion and agglomeration during operation, leading to numerous problems. These include increased cylinder load and energy consumption; uneven mixing of materials; and poor granulation effect. Traditional cleaning methods mainly rely on the oscillation and impact of internal cylinder components and periodic manual cleaning, but these are inefficient and cause significant wear to the inner wall. Therefore, this invention proposes a scraping device for a cylindrical mixer and a cylindrical mixer itself. Utility Model Content

[0004] The main purpose of this utility model is to provide a scraping device for a cylindrical mixer and a cylindrical mixer, which solves the technical problems of low cleaning efficiency of sticky material and large wear on the inner wall of the cylindrical mixer.

[0005] To achieve the above objectives, this utility model provides a scraping device for a cylindrical mixer, comprising an outer shell, a transmission mechanism, and a scraping mechanism.

[0006] A conductive element is arranged around the outer periphery of the feed end of the outer casing, and the conductive element is connected to the fixed brush to form a power source.

[0007] The transmission mechanism is located at the feed end and is connected to and powered by the power source. The transmission mechanism includes a ball screw, a motor, a drive wheel, and a driven wheel. The fixed end of the ball screw is fixed above the lifting plate on the inner wall of the outer casing. The extended end of the ball screw extends out of the feed end and is connected to the driven wheel. The drive wheel is mounted on the output shaft of the motor and meshes with the driven wheel to drive the ball screw to rotate.

[0008] The scraping mechanism includes a ball nut and a scraper. The ball nut is threadedly engaged with the ball screw, and the scraper is fixedly connected to the ball nut. The transmission mechanism drives the scraper to scrape the material.

[0009] In some embodiments, the protruding end of the ball screw extends beyond the feed end by a length ≥80mm to ensure the stability of the driven wheel installation and transmission.

[0010] In some embodiments, the ball nut is sleeved on the ball screw, and the ball nut is welded to the scraper.

[0011] The ball nut contains balls that roll within the raceway between the ball nut and the ball screw.

[0012] In some embodiments, the fixed end of the ball screw is provided with a fixing seat, which is welded and fixed to both ends of the lifting plate, so that the ball screw is fixed above the lifting plate.

[0013] In some embodiments, the shape of the scraper is adapted to the inner wall of the housing.

[0014] Driven by the motor, the scraper and the lifting plate move in a circular / reciprocating motion along the inner wall of the outer shell without interfering with each other.

[0015] In some embodiments, the scraper is made of a wear-resistant metal material.

[0016] In some embodiments, the conductive element is a copper ring, an iron ring, or an aluminum ring, which is fixed to the outer periphery of the feed end of the outer casing by welding.

[0017] The conductive component and the fixed brush are electrically connected through sliding contact of the brush.

[0018] In some embodiments, the motor is a reversible motor, and there are multiple reversible motors, which are equally spaced on one side of the feed end of the housing.

[0019] In some embodiments, the driving wheel and the driven wheel are connected by a drive belt.

[0020] The drive wheel rotates under the drive of the motor, and drives the driven wheel to rotate through the transmission belt. The driven wheel drives the ball screw to rotate, so that the scraper scrapes the material back and forth.

[0021] This utility model also provides a cylindrical mixer, including the scraping device of the above-mentioned cylindrical mixer.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] The above-mentioned utility model provides a scraping device for a cylindrical mixer and the cylindrical mixer itself, including a housing, a transmission mechanism, and a scraping mechanism. Conductive elements are arranged around the outer periphery of the feed end of the housing, and these conductive elements are connected to a fixed brush to form a power source. This provides power without affecting the operation of the cylindrical mixer, avoiding equipment interruptions or instability due to power supply problems, and reducing equipment failures and maintenance costs caused by power issues. The transmission mechanism includes a ball screw, a motor, a driving wheel, and a driven wheel. The fixed end of the ball screw is fixed above a lifting plate on the inner wall of the housing, and the extended end of the ball screw extends beyond the feed end and connects to the driven wheel. The driving wheel is mounted on the output shaft of the motor and meshes with the driven wheel to drive the ball screw to rotate. This transmission method utilizes a power source to drive the motor, thereby realizing the rotation of the ball screw. The ball nut of the scraping mechanism is threadedly engaged with the ball screw, and the scraper is fixedly connected to the ball nut; the transmission mechanism drives the scraper to scrape the material. This allows the ball screw in the transmission mechanism to rotate, driving the scraper on the ball nut. This ensures smooth scraper movement and high transmission precision, effectively scraping material off the inner wall of the cylindrical mixer, improving mixing uniformity and efficiency, reducing material residue on the inner wall, and preventing waste and clumping. It also facilitates regular inspection, cleaning, and maintenance, reducing maintenance difficulty and costs, and extending the equipment's lifespan.

[0024] This invention features a simple structural design, convenient operation, and automated control, significantly improving scraping efficiency and quality. It effectively solves the technical problems of low cleaning efficiency and significant inner wall wear in traditional cylindrical mixers. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the scraping device of the cylindrical mixer of this utility model.

[0027] The attached figures are labeled as follows: 1. Outer shell; 2. Scraper; 3. Lifting plate; 4. Ball screw nut; 5. Driven wheel; 6. Driving wheel; 7. Motor output shaft; 8. Motor; 9. Protective shell; 10. Ball screw.

[0028] The implementation, functional features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0031] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] The applicant discovered that in current sintering processes, equipment such as cylindrical mixers and cylindrical granulators often experience severe material buildup on the inner walls of the cylinders due to mineral powder adhesion and agglomeration. On the one hand, this increases the cylinder load, affecting the water addition ratio and increasing energy consumption; on the other hand, material buildup on the inner walls can clog the lifting plates, leading to uneven material mixing and poor granulation results. Traditional cleaning methods mainly rely on the oscillating impact of the wear-resistant chain suspended inside the cylinder and periodic manual cleaning, or cleaning using mechanical scrapers. Manual cleaning is inefficient and requires machine shutdown, while the suspended wear-resistant chain and mechanical scrapers cause significant wear to the inner walls. Furthermore, all of these cleaning methods have blind spots in their cleaning process.

[0033] Based on this, the embodiments of this utility model provide a scraping device for a cylindrical mixer, which solves the technical problems of low cleaning efficiency and large wear on the inner wall of the cylindrical mixer.

[0034] See Figure 1 , Figure 1 This is a schematic diagram of the scraping device of the cylindrical mixer of this utility model. This utility model provides a scraping device for a cylindrical mixer, including a housing, a transmission mechanism, and a scraping mechanism.

[0035] Conductive elements are arranged around the outer periphery of the feed end of the outer casing 1, and the conductive elements are connected to the fixed brush to form a power source.

[0036] To ensure stable operation and safety of the equipment, in some embodiments, the outer casing is made of metal or other robust materials, serving to protect the internal mechanical structure and contain the materials. Conductive components are arranged around the outer periphery of the feed end of the outer casing. The outer casing is typically angled, with the mineral powder entering from a higher position; this feed end is not part of the working area, thus not affecting production.

[0037] The conductive element and the fixed brush are connected to form a power system. In some embodiments, the fixed brush is an electrical contact device, typically used to transfer electrical energy to rotating or moving parts. Connecting the fixed brush to the conductive element, where the contact between the fixed brush and the conductive element is a sliding contact—that is, the fixed brush slides on the surface of the conductive element—maintains the electrical connection, providing power to the motor in the transmission mechanism. This efficiently transfers power to the internal components of the equipment without requiring complex cable connections. It can reduce failures caused by mechanical vibration or poor contact, improving the reliability of the equipment.

[0038] To understand the connection method of the transmission mechanism, see [link / reference]. Figure 1 In some embodiments, a transmission mechanism is disposed at the feed end, connected to and powered by the power source; the transmission mechanism includes a ball screw 10, a motor 8, a drive wheel 6 and a driven wheel 5. The fixed end of the ball screw 10 is fixed above the lifting plate 3 on the inner wall of the outer casing 1, and the extended end of the ball screw 10 extends out of the feed end and is connected to the driven wheel 5. The drive wheel 6 is mounted on the output shaft 7 of the motor 8 and meshes with the driven wheel 5 to drive the ball screw 10 to rotate.

[0039] The electric motor is the power source of the transmission mechanism, and a drive wheel is mounted on its output shaft. The motor is powered by an electrical supply. The drive wheel, mounted on the motor's output shaft, meshes with the driven wheel for transmission. The motor drives the rotation of the drive wheel, which in turn drives the driven wheel to rotate through the meshing. The rotation of the driven wheel is transmitted through the extended end of the ball screw, driving the ball screw to rotate, thus achieving the mixing operation of materials. The combination of the motor and the ball screw enables automated control, improving production efficiency and product quality.

[0040] To enable the transmission mechanism to drive the scraper for scraping operations, in some embodiments, the scraping mechanism includes a ball nut 4 and a scraper 2. The ball nut 4 is threadedly engaged with the ball screw 10. When the ball screw rotates, the ball nut moves axially along the ball screw. The scraper 2 is fixedly connected to the ball nut 4. The axial linear movement of the ball nut 4 drives the scraper 2 to perform scraping operations, thereby removing or moving materials such as adhering minerals from the inner wall of the outer casing. This eliminates the need for various vibrating devices, thus minimizing wall wear on the cylindrical mixer. Furthermore, the use of a motor to drive the scraper eliminates the need for manual cleaning, improving work efficiency and safety. This ensures that the entire transmission process from the motor to the scraper is efficient and stable, guaranteeing the reliability of the scraping operation.

[0041] The scraping device of the aforementioned cylindrical mixer includes a housing, a transmission mechanism, and a scraping mechanism. Conductive elements are arranged around the outer periphery of the feed end of the housing, and these conductive elements are connected to a fixed brush to form a power source. This provides power without affecting the operation of the cylindrical mixer, avoiding equipment interruptions or instability due to power supply issues, and reducing equipment failures and maintenance costs caused by power problems. The transmission mechanism includes a ball screw, a motor, a drive wheel, and a driven wheel. The fixed end of the ball screw is fixed above the lifting plate on the inner wall of the housing, and the extended end of the ball screw extends beyond the feed end and connects to the driven wheel. The drive wheel is mounted on the output shaft of the motor and meshes with the driven wheel to drive the ball screw to rotate. This transmission method enables precise scraping control, ensuring smooth scraper movement and high transmission accuracy. It effectively scrapes material from the inner wall of the cylindrical mixer, improving mixing uniformity and efficiency, reducing material residue on the inner wall, and preventing material waste and agglomeration. The scraping mechanism's ball nut is threaded into the ball screw, and the scraper is fixedly connected to the ball nut; the transmission mechanism drives the scraper to scrape material. This ensures the scraping device maintains good working condition during long-term operation, while facilitating regular inspection, cleaning, and maintenance, reducing maintenance difficulty and costs, and extending the equipment's service life.

[0042] This invention features a simple structural design, convenient operation, and automated control, significantly improving scraping efficiency and quality. It effectively solves the technical problems of low cleaning efficiency and significant inner wall wear in traditional cylindrical mixers.

[0043] To increase the installation stability of the driven wheel, in some embodiments, the extended end of the ball screw 10 extends beyond the feed end by ≥80mm, providing sufficient installation space for the driven wheel. Insufficient extension length may result in an insecure installation of the driven wheel, affecting transmission stability. Sufficient extension length reduces vibration during transmission, preventing vibration from causing loosening of the connection between the driven wheel and the ball screw, thus ensuring transmission stability. It also ensures a tighter meshing between the driven wheel and the ball screw, improving transmission efficiency.

[0044] To ensure high-precision, low-friction linear motion control between the ball screw and the ball nut, in some embodiments, the ball nut 4 is sleeved on the ball screw 10, and the ball nut's internal thread engages with the external thread of the ball screw to form a movable connection. The ball nut 4 is welded to the scraper 2. This connection method ensures a rigid connection between the ball nut and the scraper, improves the reliability of the equipment, and allows the linear motion of the ball nut to drive the scraper to perform scraping operations.

[0045] The ball nut 4 contains balls that roll within a raceway between the ball nut 4 and the ball screw 10. The raceway is the contact surface between the ball nut and the ball screw. The rolling of the balls within the raceway reduces friction, improves transmission efficiency, and lowers energy consumption. The rotation of the ball screw is converted into linear motion by the ball nut, making it suitable for applications requiring precise material scraping. The design of the ball nut reduces wear and extends the service life of the equipment.

[0046] To avoid affecting the normal operation of the lifting plate, in some embodiments, the fixed end of the ball screw 10 is provided with a fixing seat. The fixing seat is welded and fixed to both ends of the lifting plate 3, so that the ball screw 10 is fixed above the lifting plate 3. This ensures a firm connection between the fixing seat and the lifting plate, improves the stability of the entire structure, and reduces the displacement of the ball screw due to vibration or external force during operation, thereby improving the accuracy and reliability of the transmission. The lifting plate is used to mix materials, allowing them to be better mixed inside the mixer. Fixing the ball screw above the lifting plate ensures that the movement of the ball screw will not interfere with the function of the lifting plate.

[0047] Uniform mixing and scraping improve equipment stability and operating efficiency. In some embodiments, driven by the motor 8, the scraper 2 and the lifting plate 3 move circumferentially / reciprocally along the inner wall of the outer casing 1 without interference. This ensures that the scraper performs uniform scraping operations inside the mixer. Driven by the motor, the lifting plate also moves circumferentially or reciprocally along the inner wall of the outer casing. This ensures uniform material distribution inside the mixer, preventing material accumulation or agglomeration. The scraper and lifting plate do not interfere with each other during movement, improving equipment operating efficiency and reliability.

[0048] To effectively scrape material from the inner wall of the outer casing, in some embodiments, the shape of the scraper 2 is adapted to the inner wall of the outer casing 1 to ensure effective scraping. This allows the material to be evenly distributed inside the mixer, preventing material accumulation or clumping, improving mixing efficiency, and ensuring uniform mixing within the mixer. It also reduces wear between the scraper and the inner wall, extending the equipment's service life.

[0049] Improving the durability of the scraper extends its service life. In some embodiments, the scraper 2 is made of a wear-resistant metal material. Wear-resistant metal materials typically possess high hardness, high wear resistance, and good impact resistance. The wear-resistant material helps maintain the shape and edge sharpness of the scraper, ensuring that it can still effectively scrape materials even after prolonged use, thus improving scraping efficiency. Due to the high durability of the wear-resistant material, the scraper replacement frequency is reduced, thereby reducing maintenance costs and downtime, and improving the overall production efficiency of the equipment.

[0050] Materials with good electrical conductivity are suitable for electrical connections. The selection of conductive material is based on experimental results and is not specifically limited. In some embodiments, the conductive element is a copper ring, an iron ring, or an aluminum ring, which is fixed to the outer periphery of the feed end of the housing 1 by welding.

[0051] The conductive component and the fixed brush are electrically connected through sliding contact of the brush.

[0052] In some embodiments, the conductive element is a copper ring, which is fixed to the outer periphery of the feed end of the housing by welding. This ensures a firm connection between the conductive element and the housing, reduces poor contact caused by mechanical vibration, and improves the reliability of the equipment. The copper ring possesses excellent electrical conductivity, thermal conductivity, and corrosion resistance, ensuring a stable electrical connection.

[0053] To accommodate a bidirectional mixing machine, in some embodiments, the motor 8 is a reversible motor, and there are multiple reversible motors, which are equally spaced on one side of the feed end of the outer casing 1.

[0054] In some embodiments, the motor is a reversible motor that can rotate forward and reverse to control the bidirectional movement of the scraper or lifting plate. For example, in a cylindrical mixer, forward and reverse rotation can ensure that the material is mixed evenly in different directions and that the scraping effect is good.

[0055] To prevent insufficient motor power from hindering the scraper's scraping operation, in some embodiments, multiple reversible motors are arranged at equal intervals on one side of the feed end of the housing. This ensures uniform power distribution and improves the equipment's operating efficiency and stability.

[0056] In some embodiments, the number of reversible motors is determined by the number of lifting plates in the cylindrical mixer, so as to clean the ore adhering to the inner wall of the outer shell without affecting normal production. For example, if there are 3 reversible motors, each responsible for cleaning the inner wall of the 120° cylindrical mixer, the scraper can scrape the material back and forth without any dead corners.

[0057] To achieve unified control of the motor and scraper for stable production, only one set of scrapers works at a time. In conjunction with the rotation of the cylinder, the ore powder falls with gravity, without affecting normal production. Therefore, the ore stuck to the cylinder can be cleaned while production is in progress.

[0058] To ensure that the scraping operation of the scraper does not interfere with the normal rotation of the cylinder and the falling of mineral powder, thus guaranteeing the continuity and stability of the production process, in some embodiments, only one set of scrapers operates at a time during equipment operation. The cylinder rotates under the drive of a motor, and the mineral powder moves within the cylinder along with its rotation. Driven by a ball screw, the scraper reciprocates along the inner wall of the cylinder. This reciprocating motion of the scraper, combined with the rotation of the cylinder, ensures that the mineral powder is evenly distributed within the cylinder and falls under gravity, thereby achieving the purpose of cleaning the mineral powder adhering to the inner wall of the cylinder and improving the operating efficiency of the equipment.

[0059] To protect the motor from environmental interference, in some embodiments, the motor has a protective housing to protect it from external factors such as dust and moisture, thereby improving the motor's service life and reliability.

[0060] In some embodiments, the driving pulley 6 and the driven pulley 5 are connected by a drive belt. This ensures efficient power transmission and improves transmission efficiency and flexibility.

[0061] The drive wheel 6 rotates under the drive of the motor 8, and drives the driven wheel 5 to rotate through the transmission belt. The driven wheel 5 drives the ball screw 10 to rotate, so that the scraper 2 scrapes the material back and forth.

[0062] This utility model also provides a cylindrical mixer, including the scraping device of the above-mentioned cylindrical mixer.

[0063] In some embodiments, the components of the cylindrical mixer are connected by bearings to ensure stable operation. The cylindrical mixer is provided with a feed inlet and a discharge outlet for material input and output.

[0064] To regulate the moisture content of the materials, in some embodiments, the cylindrical mixer is also equipped with a water spraying device. In the sintering production line, the cylindrical mixer is used to uniformly stir, wet, and granulate the sintering material to improve the air permeability and sintering efficiency of the mixture, thereby playing an important role in improving production efficiency and product quality.

[0065] The aforementioned cylindrical mixer's scraping device and the cylindrical mixer itself include a housing, a transmission mechanism, and a scraping mechanism. Conductive elements are arranged around the outer periphery of the feed end of the housing, and these conductive elements are connected to a fixed brush to form a power source. This provides power without affecting the operation of the cylindrical mixer, avoiding equipment interruptions or instability due to power supply issues, and reducing equipment failures and maintenance costs caused by power problems. The transmission mechanism includes a ball screw, a motor, a drive wheel, and a driven wheel. The fixed end of the ball screw is fixed above the lifting plate on the inner wall of the housing, and the extended end of the ball screw extends beyond the feed end and connects to the driven wheel. The drive wheel is mounted on the output shaft of the motor and meshes with the driven wheel to drive the ball screw to rotate. This transmission method enables precise scraping control, ensuring smooth scraper movement and high transmission accuracy. It effectively scrapes material from the inner wall of the cylindrical mixer, improving mixing uniformity and efficiency, reducing material residue on the inner wall, and preventing material waste and agglomeration. The scraping mechanism's ball nut is threaded into the ball screw, and the scraper is fixedly connected to the ball nut; the transmission mechanism drives the scraper to scrape material. This ensures the scraping device maintains good working condition during long-term operation, while facilitating regular inspection, cleaning, and maintenance, reducing maintenance difficulty and costs, and extending the equipment's service life.

[0066] Moreover, this invention features a simple structural design, is easy to operate, and achieves automated control, significantly improving scraping efficiency and quality. It effectively solves the technical problems of low cleaning efficiency and significant inner wall wear in traditional cylindrical mixers.

[0067] The above technical solutions of this utility model are merely preferred embodiments and do not limit the patent scope of this utility model. All equivalent structural transformations made under the technical concept of this utility model using the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this utility model.

Claims

1. A scraping device for a cylindrical mixer, characterized in that, include: The outer casing (1) has a conductive element surrounding its feed end, and the conductive element is connected to a fixed brush to form a power source. A transmission mechanism is provided at the feed end and is connected to and powered by the power source. The transmission mechanism includes a ball screw (10), a motor (8), a drive wheel (6), and a driven wheel (5). The fixed end of the ball screw (10) is fixed above the lifting plate (3) on the inner wall of the outer shell (1). The extended end of the ball screw (10) extends out of the feed end and is connected to the driven wheel (5). The drive wheel (6) is mounted on the output shaft (7) of the motor (8) and meshes with the driven wheel (5) to drive the ball screw (10) to rotate. The scraping mechanism includes a ball nut (4) and a scraper (2). The ball nut (4) is threadedly engaged with the ball screw (10), and the scraper (2) is fixedly connected to the ball nut (4). The transmission mechanism drives the scraper (2) to scrape the material.

2. The scraping device of the cylindrical mixer according to claim 1, characterized in that, The extension end of the ball screw (10) extends ≥80mm beyond the feed end to ensure the stability of the driven wheel (5) installation and transmission.

3. The scraping device of the cylindrical mixer according to claim 1, characterized in that, The ball nut (4) is sleeved on the ball screw (10), and the ball nut (4) is welded to the scraper (2); The ball nut (4) contains balls that roll in the raceway between the ball nut (4) and the ball screw (10).

4. The scraping device of the cylindrical mixer according to claim 1, characterized in that, The fixed end of the ball screw (10) is provided with a fixed seat, which is welded and fixed to both ends of the lifting plate (3), so that the ball screw (10) is fixed above the lifting plate (3).

5. The scraping device of the cylindrical mixer according to claim 1, characterized in that, The shape of the scraper (2) is adapted to the inner wall of the outer shell (1); Driven by the motor (8), the scraper (2) and the lifting plate (3) move in a circular / reciprocating motion along the inner wall of the outer shell (1) without interfering with each other.

6. The scraping device of the cylindrical mixer according to claim 1, characterized in that, The scraper (2) is made of wear-resistant metal material.

7. The scraping device of the cylindrical mixer according to claim 1, characterized in that, The conductive component is a copper ring, an iron ring, or an aluminum ring, which is fixed to the outer periphery of the feed end of the outer shell (1) by welding. The conductive component and the fixed brush are electrically connected through sliding contact of the brush.

8. The scraping device of the cylindrical mixer according to claim 1, characterized in that, The motor (8) is a reversible motor, and there are multiple reversible motors, which are equally spaced on one side of the feed end of the outer shell (1).

9. The scraping device of the cylindrical mixer according to claim 1, characterized in that, The driving wheel (6) and the driven wheel (5) are connected by a transmission belt; The drive wheel (6) rotates under the drive of the motor (8) and drives the driven wheel (5) to rotate through the transmission belt. The driven wheel (5) drives the ball screw (10) to rotate so that the scraper (2) scrapes the material back and forth.

10. A cylindrical mixer, characterized in that, Includes the scraping device of the cylindrical mixer as described in any one of claims 1 to 9.

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