Anti-blocking low-energy-consumption drum screen

Abstract

The invention relates to the technical field of drum screens, and particularly discloses an anti-blocking low-energy-consumption drum screen which comprises a support, a motor, a driving mechanism, an outer-layer screen mesh, an inner-layer screen mesh and a cleaning system. The motor is fixed to one end of the support, the driving mechanism is arranged at the top of the support and connected with the motor, the outer-layer screen rotates at the top of the support through the driving mechanism, and the inner-layer screen is arranged in the inner-layer screen. The cleaning system is arranged at the other end of the support to clean the outer-layer screen and the inner-layer screen. By arranging the cleaning system and the vibrating device, the screen is effectively prevented from being blocked, and the screening efficiency is improved. According to the drum screen, coal with different particle sizes can be separated through the inner screen mesh and the outer screen mesh, large-particle impurities and fine coal dust are effectively removed, the quality and purity of the coal in the subsequent combustion process are ensured, and therefore the combustion efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of drum screens, and specifically refers to a drum screen with anti-blocking and low energy consumption. Background Art

[0002] With the increasingly frequent exploitation and use of coal, the problems of coal dust and waste gas pollution have become more and more serious, posing a huge threat to the environment and people's health. At present, many coal mines and coal power plants do not adopt effective purification means during the coal treatment and combustion processes, which leads to the direct emission of a large amount of harmful waste gas and dust, thus posing a serious hidden danger to the surrounding air quality and the physical health of residents, and may even trigger a series of environmental problems and public health crises.

[0003] In the past few decades, with the continuous evolution of coal treatment technologies, coal mines and power plants have gradually adopted some emerging environmental protection technologies, such as coalbed methane recovery, desulfurization and denitrification, etc., to reduce pollutant emissions. However, as an efficient device in the coal treatment and purification process, the drum screen plays a crucial role in improving coal utilization rate and removing impurities. Through physical screening, the drum screen can accurately separate coals of different particle sizes, effectively remove impurities and dust therein, thereby reducing waste gas emissions during subsequent combustion. In addition, the structural design of the drum screen enables less contact between the coal and the equipment during the screening process. This gentle treatment method not only helps to protect the physical and chemical properties of the coal, but also improves the overall treatment efficiency.

[0004] Although the drum screen equipment has demonstrated excellent performance and effects in the field of coal treatment, its popularization and application face some challenges, mainly due to the relatively high equipment manufacturing and maintenance costs. This makes some small coal mines and inefficient coal power plants hesitant when investing in new equipment, falling into a dilemma between the difficult-to-improve environmental situation and economic pressure. Therefore, it is urgent to conduct in-depth research and development on coal purification equipment with excellent performance and moderate costs to promote the progress of the coal industry on the path of environmental protection and sustainable development, and achieve the dual goals of economic benefits and environmental protection.

[0005] A drum screen is a device that screens materials by using a rotating drum and is widely used in the fields of mining, building materials, and chemical engineering. Although it has some advantages in screening efficiency, the existing drum screens still have obvious deficiencies in the following aspects:

[0006] 1. Insufficient screening accuracy: Traditional drum screens may be inefficient in screening smaller particle materials, resulting in unstable product quality.

[0007] 2. Blocking phenomenon: When processing sticky or wet materials, blockage may occur inside the drum, affecting production efficiency.

[0008] 3. High energy consumption: Traditional drum screens often consume a high amount of energy during operation, increasing the operating costs.

[0009] Therefore, a drum screen with anti-clogging and low energy consumption has become an urgent problem to be solved. Summary of the Invention

[0010] The technical problem to be solved by the present invention is to provide a drum screen with anti-clogging and low energy consumption to solve the problems of easy clogging and high energy consumption of existing drum screens.

[0011] To solve the above technical problem, the technical solution provided by the present invention is: A drum screen with anti-clogging and low energy consumption, comprising a bracket, a motor, a driving mechanism, an outer screen, an inner screen, and a cleaning system;

[0012] The motor is fixed at one end of the bracket, the driving mechanism is arranged on the top of the bracket and connected to the motor, the outer screen rotates on the top of the bracket through the driving mechanism, the outer screen is placed outside the inner screen, and the two are arranged in parallel and concentrically with a gap in the middle; the cleaning system is arranged at the other end of the bracket to clean the outer screen and the inner screen.

[0013] Further, the cleaning system includes a cleaning device and a vibration device, the vibration device is arranged at the end of the bracket, and the cleaning device is arranged on one side of the vibration device.

[0014] Further, the bracket includes a front support, a main frame body, and a rear support. The height of the front support is greater than that of the rear support. The main frame body connects the tops of the front support and the rear support to form an inclined bracket, and the motor is fixed at one end of the front support.

[0015] Further, the driving mechanism includes a driving wheel body and a sprocket. The power output end of the motor is connected to a coupling and a sprocket; the driving wheel body is fixed on the power output shaft of the motor by means of the coupling, and the sprocket is connected and driven to the driving wheel body through a chain.

[0016] Further, the driving mechanism is symmetrically arranged with respect to the outer screen.

[0017] Further, a feed inlet is provided on one side of the drum screen at the front support.

[0018] Further, the length of the inner screen is greater than that of the outer screen and the discharge end of the inner screen extends beyond the outer screen.

[0019] Further, the outer screen and the inner screen are made of polytetrafluoroethylene or polyurethane.

[0020] The advantages of the present invention compared with the prior art are as follows:

[0021] 1. The present invention effectively prevents the screen from being blocked and improves the screening efficiency by setting up a cleaning system and a vibration device.

[0022] 2. The drum screen of the present invention can separate coals with different particle sizes through inner and outer screens, effectively removing large particle impurities and fine coal dust, ensuring the quality and purity of coal during the subsequent combustion process, and thus improving the combustion efficiency.

[0023] 3. When the present invention operates, the efficient sorting and impurity removal process can improve the utilization rate of coal and reduce resource waste. Retaining high-quality coal and ensuring the efficient use of resources is also an effective protection of natural resources.

[0024] 4. The design of the drum screen of the present invention results in less contact between coal and the equipment, reducing mechanical wear. This low-wear characteristic reduces the maintenance and replacement frequency required during long-term operation of the drum screen, thus effectively saving maintenance costs.

[0025] 5. The efficient purification and sorting capabilities of the present invention enable users to provide higher-quality coal, enhancing market competitiveness and thus bringing greater economic benefits to enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 FIG. is a schematic structural diagram of a drum screen with anti-blocking and low energy consumption according to the present invention.

[0027] Figure 2 FIG. is a side view of a drum screen with anti-blocking and low energy consumption according to the present invention.

[0028] Figure 3 FIG. is an internal cross-sectional view of a drum screen with anti-blocking and low energy consumption according to the present invention.

[0029] As shown in the figure: 1. Support, 2. Motor, 3. Outer screen, 4. Inner screen, 5. Cleaning device, 6. Vibration device, 7. Front support, 8. Main frame body, 9. Rear support, 13. Driving wheel body, 14. Sprocket, 15. Feed inlet. DETAILED DESCRIPTION OF THE INVENTION

[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0031] In the present invention, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The following further details a drum screen with anti-clogging and low energy consumption according to the present invention in conjunction with the accompanying drawings.

[0033] Working principle of the present invention:

[0034] The core of the drum screen of the present invention lies in improving the screening accuracy, reducing the material blocking phenomenon and lowering the energy consumption.

[0035] 1. Self-cleaning screen structure

[0036] Improvement points: Design a screen structure with self-cleaning function. The screen is made of high-quality high-strength materials such as polytetrafluoroethylene (PTFE) or polyurethane. These materials not only have excellent wear resistance and low friction characteristics, but also have excellent chemical stability and are suitable for different material processing conditions.

[0037] The realization of the self-cleaning function depends on an integrated cleaning system, which includes a water spraying device, a cleaning device and a vibration system. The vibration mechanism is driven by a high-efficiency motor and has the characteristics of adjustable frequency and amplitude, and can be adjusted in real time according to the characteristics of the material to be screened. The self-cleaning system can effectively remove the accumulated materials and ensure that the screen is always in the best working state. The cleaning device 5 uses a combination of high pressure and air flow to achieve the best effect.

[0038] Corresponding advantages: The self-cleaning screen structure can significantly reduce the frequency of manual maintenance and cleaning, increase the continuous working time of the equipment, ensure an uninterrupted production process, and thus improve the overall production efficiency. By maximizing the screening performance and minimizing the downtime, the labor cost can be reduced and the economic benefits of the enterprise can be improved. At the same time, frequent cleaning reduces the risk of material cross-contamination and ensures the quality of the final product is more reliable.

[0039] 2. Optimized rotation angle and speed

[0040] Improvement points: Introduce a control system in the drum screen to realize the optimized adjustment of the rotation angle and speed. The system can integrate high-precision sensors to monitor in real time the properties of the material such as particle size, humidity, fluidity, etc., and intelligently adjust the working parameters of the drum through data analysis algorithms to maximize the screening efficiency and accuracy. The control system has a self-learning function and continuously optimizes the parameter adjustment mechanism according to historical data.

[0041] Corresponding advantages: Improve the layering effect of particles, making it easier to separate high-quality products. In addition, scientific control can reduce material loss and waste, improve screening accuracy, and ultimately enhance production efficiency. Moreover, the intelligent control system can also provide real-time feedback and adjust subsequent production processes, thereby achieving higher energy utilization efficiency, reducing production costs, and simultaneously minimizing environmental impact.

[0042] 3. Energy Efficiency Management System

[0043] Improvements: An intelligent energy efficiency management system. The system library uses advanced energy monitoring technologies to real-time track and record the energy consumption data of equipment, and optimize the operating efficiency of equipment through dynamic adjustment. The energy efficiency management system includes intelligent algorithms that can perform predictive adjustments based on real-time data streams. For example, by analyzing specific production loads and process parameters, it can actively reduce the energy consumption of equipment under low loads.

[0044] System Composition:

[0045] (1) Energy Consumption Monitoring Module

[0046] Power Sensor (ES300C): Used to real-time monitor the current, voltage, and power factor of equipment. Intelligent power monitoring modules can be selected, which can use single-phase or three-phase electricity meters and have communication functions such as RS-485 or Modbus protocol.

[0047] Environmental Sensor (BMV080): Measures the impact of environmental conditions such as temperature and humidity on energy efficiency and can be integrated into the system when necessary.

[0048] (2) Programmable Logic Controller (PLC)

[0049] PLC Controller: Select a PLC with sufficient I / O ports, which is responsible for receiving sensor data and executing control logic.

[0050] I / O Module: Expand the input and output of current, voltage, and other sensors to ensure real-time monitoring and control of equipment status.

[0051] (3) Execution Unit

[0052] Frequency Converter / Motor Controller (AC310-T3-018G / 022P-B): Connected to the PLC, it can achieve real-time control of the speed and operating status of the motor and adjust according to the instructions issued by the PLC.

[0053] Electric Valve or Switch: Control the material flow as needed.

[0054] (4) Communication Network

[0055] Fieldbus: Ethernet / IP or Modbus TCP, supporting real-time data transmission and control between PLC and sensors / actuators.

[0056] The working principle of this energy efficiency management system is as follows:

[0057] Data acquisition:

[0058] Power sensors continuously monitor the current, voltage, and power of the equipment and send this data to the PLC via the fieldbus.

[0059] Data processing and control logic:

[0060] The PLC receives the sensor data and executes the predefined control logic. If abnormal energy consumption or the equipment is not in the optimal state is detected, the PLC will issue necessary adjustment instructions, Instruction 1 - reducing the motor speed, Instruction 2 - closing the switch.

[0061] Execution feedback:

[0062] The PLC sends the control instructions to the frequency converter execution unit to adjust the operating parameters of the equipment in real time, thereby optimizing energy efficiency.

[0063] By integrating the energy efficiency management system, the accuracy and real-time nature of energy efficiency monitoring and dynamic optimization and adjustment are solved, ensuring that the equipment always operates at the optimal energy consumption state.

[0064] Combined with Appendix Figures 1 - 3 , this invention is introduced in detail.

[0065] A non-clogging and low-energy consumption drum sieve includes a bracket 1, a motor 2, a driving mechanism, an outer sieve 3, an inner sieve 4, and a cleaning system. The motor 2 is fixed at one end of the bracket 1, the driving mechanism is arranged on the top of the bracket 1 and connected to the motor 2. The outer sieve 3 rotates on the top of the bracket 1 through the driving mechanism. The outer sieve 3 is located outside the inner sieve 4. The two sieves are arranged in parallel and concentrically, and are bolted to form concentricity, with a certain gap in the middle. The cleaning system is arranged at the other end of the bracket 1 to clean the outer sieve 3 and the inner sieve 4.

[0066] Furthermore, the cleaning system includes a cleaning device 5 and a vibration device 6. The vibration device 6 is arranged at the end of the bracket 1, and the cleaning device 5 is arranged on one side of the vibration device 6. The cleaning device 5 contains a water spraying and cleaning device. The water spraying device is installed on the cleaning device, and the high-pressure water gun's impact force is used for the cleaning work of the sieve. A cleaning head is installed on the cleaning device, and when the drum sieve rotates, the cleaning head conducts the cleaning work. The vibration device 6 contains an eccentric shaft for eccentric positioning rotation to drive the sieve to vibrate slightly, which helps the movement of materials on the sieve and reduces blockage. The cleaning device 5 can clean the sieve regularly to further prevent blockage.

[0067] The support 1 includes a front support 7, a main frame body 8 and a rear support 9. The height of the front support 7 is greater than that of the rear support 9. The main frame body 8 connects the tops of the front support 7 and the rear support 9 to form an inclined support, and the motor 2 is fixed at one end of the front support 7. This inclined design helps the natural flow of materials on the sieve mesh and reduces blockage.

[0068] The drive mechanism includes a drive wheel body 13 and a sprocket 14. The power output end of the motor 2 is connected to a coupling and the sprocket 14; the sprocket 14 is connected to the drive shaft of the drive wheel body 13, the drive wheel body 13 is fixed on the power output shaft of the motor 2 by means of the coupling, and the sprocket 14 is connected and driven to the drive wheel body 13 through a chain. This drive method has a simple structure, high transmission efficiency, and can reduce energy consumption.

[0069] The drive mechanism is symmetrically arranged with respect to the outer sieve mesh 3, ensuring the stability and balance of the rotation of the outer sieve mesh 3.

[0070] The drum sieve is provided with a feed port 15 on one side of the front support 7, facilitating the entry of materials into the drum sieve for screening.

[0071] The length of the inner sieve mesh 4 is greater than that of the outer sieve mesh 3 and the discharge end of the inner sieve mesh 4 extends beyond the outer sieve mesh 3. Such a design enables the inner sieve mesh 4 to screen out finer materials, distinguish materials of different particle sizes, and at the same time avoid the accumulation of materials at the end of the sieve mesh causing blockage.

[0072] The outer sieve mesh 3 and the inner sieve mesh 4 are made of polytetrafluoroethylene or polyurethane. These materials have good wear resistance and self-lubricity, can effectively reduce the adhesion of materials on the sieve mesh, and reduce the risk of blockage.

[0073] The specific implementation process of a drum sieve with anti-blocking and low energy consumption of the present invention is as follows:

[0074] A drum sieve with anti-blocking and low energy consumption mainly includes a support 1, a motor 2, a drive mechanism, an outer sieve mesh 3, an inner sieve mesh 4 and a cleaning system.

[0075] Construction of the support 1: The support 1 is composed of a front support 7, a main frame body 8 and a rear support 9. The height of the front support 7 is higher than that of the rear support 9, and the main frame body 8 connects the tops of the front support 7 and the rear support 9, thus forming a support 1 structure with a certain inclination angle. This inclined design helps the natural sliding of materials under the action of gravity and reduces energy consumption. The motor 2 is fixed at one end of the front support 7 close to the left side, providing the power source for the entire device.

[0076] Operation of the driving mechanism: The driving mechanism is arranged on the top of the bracket 1 and specifically includes a driving wheel body 13 and a sprocket 14. The power output end of the motor 2 is connected to a coupling and the sprocket 14. The driving wheel body 13 is fixed to the power output shaft of the motor 2 by means of a coupling, and the sprocket 14 is connected and driven to the driving wheel body 13 through a chain. The driving mechanism is symmetrically arranged with respect to the outer screen 3, which can ensure that the outer screen 3 is evenly stressed during rotation and operates more smoothly. For example, when the motor 2 is started, the output shaft drives the driving wheel body 13 to rotate, and the driving wheel body 13 drives the sprocket 14 to rotate through the chain, thereby realizing the driving of the outer screen 3.

[0077] Screen layout: The outer screen 3 rotates on the top of the bracket 1 through the driving mechanism. The outer screen 3 is located outside the inner screen 4. The two screens are arranged in parallel and concentrically, and are bolted to form concentricity, with a certain gap in the middle. The discharge end of the inner screen 4 extends beyond the outer screen 3. This design allows the material to be initially screened by the inner screen 4 and then secondarily screened by the outer screen 3, improving the screening accuracy. At the same time, since the inner screen 4 is longer, the residence time of the material on the screen increases, which is beneficial to improving the screening efficiency.

[0078] Operation of the cleaning system: The cleaning system is arranged at the other end of the bracket 1 and is used to clean the outer screen 3 and the inner screen 4 to prevent the screen from being blocked. The cleaning system includes a cleaning device 5 and a vibration device 6. The vibration device 6 is arranged at the end of the bracket 1, and the cleaning device 5 is arranged on one side of the vibration device 6. After the equipment has been running for a period of time, the cleaning device 5 is started. For example, a cleaning liquid is sprayed on the screen through a high-pressure nozzle, and at the same time, the vibration device 6 is turned on. The vibration generated by the vibration device 6 can make the impurities attached to the screen easier to be washed away, thereby keeping the screen unobstructed and improving the screening effect.

[0079] The above describes the present invention and its implementation manners. Such a description is not restrictive, and what is shown in the drawings is only one of the implementation manners of the present invention. The actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, design similar structural modes and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A clogging-proof and low-energy consumption drum screen, characterized in that: It includes a bracket (1), a motor (2), a driving mechanism, an outer screen (3), an inner screen (4), and a cleaning system; The motor (2) is fixed at one end of the bracket (1). The driving mechanism is arranged at the top of the bracket (1) and connected to the motor (2). The outer screen (3) rotates at the top of the bracket (1) through the driving mechanism. The outer screen (3) is placed outside the inner screen (4), and the two are arranged in parallel and concentrically with a gap in the middle. The cleaning system is arranged at the other end of the bracket (1) to clean the outer screen (3) and the inner screen (4).

2. The drum screen with anti-blocking and low energy consumption according to claim 1, characterized in that: The cleaning system includes a cleaning device (5) and a vibration device (6). The vibration device (6) is arranged at the end of the bracket (1), and the cleaning device (5) is arranged on one side of the vibration device (6).

3. The drum screen with anti-clogging and low energy consumption according to claim 2, characterized in that: The bracket (1) includes a front support (7), a main frame body (8), and a rear support (9). The height of the front support (7) is greater than that of the rear support (9). The main frame body (8) connects the tops of the front support (7) and the rear support (9) to form an inclined bracket (1). The motor (2) is fixed at one end of the front support (7).

4. A clogging-proof and low-energy consumption drum sieve according to claim 3, characterized in that: The driving mechanism includes a driving wheel body (13) and a sprocket (14). The power output end of the motor (2) is connected to a coupling and the sprocket (14). The driving wheel body (13) is fixed on the power output shaft of the motor (2) by means of a coupling. The sprocket (14) is connected and driven to the driving wheel body (13) through a chain.

5. The drum screen with anti-clogging and low energy consumption according to claim 4, wherein: The driving mechanism is symmetrically arranged with respect to the outer screen (3).

6. The drum screen with anti-clogging and low energy consumption according to claim 1, wherein: The drum screen is provided with a feed inlet (15) on one side of the front support (7).

7. A clogging-proof and low-energy consumption drum sieve according to claim 1, characterized in that: The length of the inner screen (4) is greater than that of the outer screen (3), and the discharge end of the inner screen (4) extends beyond the outer screen (3).

8. A clogging-proof and low-energy consumption drum screen according to claim 1, characterized in that: The outer screen (3) and the inner screen (4) are made of polytetrafluoroethylene or polyurethane.

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