Cement dust collector
By combining membrane filter bags with electrostatic precipitators, high-efficiency filtration and automatic dust removal are achieved, solving the problems of easy clogging and damage of filter bags in cement dust collectors. This improves dust removal efficiency and equipment maintenance convenience, while reducing energy consumption and maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI LINGFENG CEMENT CO LTD
- Filing Date
- 2025-07-01
- Publication Date
- 2026-07-31
AI Technical Summary
Existing cement dust collector filter bags are prone to clogging and damage, are cumbersome to maintain and clean, have high energy consumption, and the dust removal system is frequently started and stopped, resulting in energy waste.
It adopts a combination of membrane filter bags and electrostatic dust removal module. The membrane filter bags are made of PTFE material with a pore size ≤0.3μm. The electrostatic dust removal module uses a high-voltage electric field to capture large dust particles. The pulse cleaning device monitors the filter bag pressure difference in real time and automatically adjusts the cleaning parameters. The cleaning is carried out in turn in different compartments. Combined with an anti-stick coating and a vibration device, dust adhesion is reduced.
It significantly improves dust removal efficiency, reduces energy consumption, facilitates equipment maintenance, reduces manual dust cleaning workload, lowers maintenance costs, and improves filter bag replacement efficiency.
Smart Images
Figure CN224573885U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dust collection equipment technology, and in particular to a cement dust collector. Background Technology
[0002] As an important component of the clinker production process in cement kilns, baghouse dust collectors function to collect dusty gases containing fine particles from the production process. These gases are introduced into the ash hoppers through the inlet duct, inlet branch pipe, and inlet valve. As the airflow slows down, some dust particles fall into the ash hoppers and are returned for reuse. The remaining dust particles rise with the airflow and enter the bag chambers. After being filtered by the filter bags, the dust particles are trapped on the outside of the filter bags. The purified gas passes through the filter bags, enters the upper chamber through the perforated plate inside the filter bags, and is then discharged into the atmosphere through the exhaust valve plate and exhaust pipe, thus achieving the purpose of dust collection.
[0003] According to Chinese Patent Publication No. CN222677487U, a cement dust collection device is disclosed, relating to the technical field of dust collection equipment. The technical solution includes an air inlet pipe, a compressed air pipe, an air outlet pipe, and a dust collection box. A partition frame is fixedly installed inside the dust collection box near its upper surface. A compressed air pipe is fixedly installed inside the dust collection box above the partition frame, and an air outlet is provided on the lower surface of the compressed air pipe. A perforated inner cylinder is fixedly installed on the lower surface of the partition frame. A dust collection bag is fixedly sleeved on the outer surface of the perforated inner cylinder. A constricted tube is fixedly connected to the lower surface of the perforated inner cylinder. A fixing plate is fixedly installed on the lower surface of the constricted tube. The upper surface of the fixing plate has a through hole, and a sliding rod is slidably inserted into the through hole. A conical piston is fixedly connected to one end of the sliding rod inside the constricted tube. This utility model can remove dust from inside the dust collection bag, avoiding air pollution.
[0004] The aforementioned patent has the effect of removing dust from inside the dust filter bag to avoid air pollution. However, the filter bag is prone to clogging and damage, and the replacement operation is cumbersome. Furthermore, cleaning the internal dust accumulation is inconvenient, increasing maintenance costs and downtime. It also has high energy consumption, and the dust removal system requires frequent start-stop of the fan or the use of a large amount of compressed air, resulting in energy waste. Utility Model Content
[0005] The purpose of this invention is to provide a cement dust collector that significantly improves dust removal efficiency, reduces energy consumption, and facilitates equipment maintenance.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a cement dust collector, comprising a dust collection shell, an installation frame fixedly connected to the inner wall of the dust collection shell, a connecting column fixedly connected to the bottom end of the installation frame, a tension spring fixedly connected to the bottom end of the connecting column, a sleeve column fixedly connected to the bottom end of the tension spring, a connecting rod rotatably connected to the outer surface of the sleeve column, a connecting ring fixedly connected to the inner wall of the dust collection shell, an elastic connecting rope provided on the outer surface of the connecting ring, a membrane filter bag sleeved on the outer surface of the elastic connecting rope, a fixing frame provided on the top of the membrane filter bag, a connecting insertion hole provided on the outer surface of the fixing frame, and a connecting rod threadedly connected to the inner wall of the connecting insertion hole.
[0007] By adopting the above technical solution, a tension spring is fixedly connected to the bottom of the connecting column. A connecting rod is used to fix and connect the tension spring to the corresponding connecting hole on the fixing frame, thereby securing the membrane filter bag and facilitating installation and disassembly. The membrane filter bag uses PTFE membrane material with a pore size ≤0.3μm, achieving a filtration efficiency of up to 999%. The synergistic effect of the two filtration methods significantly improves the overall dust removal efficiency. The membrane filter bag can be quickly disassembled and installed, reducing the time for replacing a single filter bag to less than 2 minutes.
[0008] A further feature of this invention is that a pressure sensor is provided on the top of the membrane filter bag, and an electrostatic dust removal module is fixedly connected to the bottom of the mounting frame.
[0009] By adopting the above technical solution, the electrostatic dust removal module uses a high-voltage electric field to charge dust particles, thereby achieving the initial collection of large dust particles (particle size > 5μm) with a dust removal efficiency of over 80%.
[0010] A further feature of this invention is that a pulse cleaning device is fixedly connected to the inner wall of the dust collection housing, and a dust collector is fixedly connected to the bottom of the dust collection housing.
[0011] By adopting the above technical solution, the pulse cleaning device includes a pressure sensor installed above the filter bag to monitor the pressure difference across the filter bag in real time. When the pressure difference reaches a set threshold, the PLC control system automatically starts the pulse cleaning program, adjusting the pulse jet pressure (0.2-0.6MPa), jet interval (1-10 min), and jet time (0.1-0.3s) according to different operating conditions to ensure cleaning effectiveness while reducing compressed air consumption. Furthermore, the cleaning system uses a compartment-by-compartment alternating cleaning method to avoid a decline in the overall performance of the dust collector due to cleaning.
[0012] A further feature of this invention is that the inner wall of the dust collector is provided with an anti-stick coating, and a separation grid is fixedly connected to the inner wall of the dust collection shell.
[0013] By adopting the above technical solution, the inner wall of the dust collector is equipped with an anti-stick coating to reduce dust adhesion and accumulation, making it difficult to clean and enhancing the protection of the overall device.
[0014] A further feature of this invention is that a support frame is fixedly connected to the inner wall of the dust collector, and a protective cover is fixedly connected to the bottom of the support frame.
[0015] By adopting the above technical solution, a support frame is fixedly connected to the inner wall of the dust collector, and a protective cover is fixedly connected to the bottom of the support frame, which strengthens the support and enhances the protection of the overall device.
[0016] A further feature of this invention is that a motor is fixedly connected to the inner wall of the protective cover, and a rotating shaft is fixedly connected to the output end of the motor.
[0017] By adopting the above technical solution, the staff can drive the motor to control the rotation of the shaft, thereby improving the flexibility of the overall device.
[0018] A further feature of this invention is that a spiral conveying rod is fixedly connected to the bottom end of the rotating shaft, and a vibrating motor is provided on the outer surface of the dust collector.
[0019] By adopting the above technical solution, the rotation of the shaft drives the screw conveyor to rotate, thereby enhancing the transportation and transmission.
[0020] A further feature of this invention is that a vibration transmission plate is fixedly connected to the output end of the vibration motor, and a connecting frame is fixedly connected to the bottom end of the dust collector.
[0021] By adopting the above technical solution, staff can drive a vibration motor and combine it with a vibration plate to enhance vibration and reduce dust adhesion.
[0022] A further feature of this invention is that the outer surface of the connecting frame is provided with a connecting hole, and a connecting post is inserted into the inner wall of the connecting hole.
[0023] By adopting the above technical solution, a second connection hole is opened on the outer surface of the connecting frame, and a second connecting post is inserted into the inner wall of the second connection hole, which facilitates installation and disassembly.
[0024] A further feature of this invention is that a multi-cavity unloading device is fixedly connected to the bottom end of the second connecting column, a fixing collar is threadedly connected to the outer surface of the second connecting column, and inspection doors are provided on the outer surfaces of both the dust collection housing and the dust collector.
[0025] By adopting the above technical solution, a multi-chamber unloading device is installed at the bottom of the dust collector to automatically transport the accumulated ash to the discharge port, reducing the amount of manual cleaning work. At the same time, a large-size maintenance door is installed on the side of the shell to facilitate personnel access for internal maintenance.
[0026] The beneficial effects of this utility model are: 1. This utility model, through the coordinated arrangement of the dust collection housing, mounting frame, connecting column, tension spring, sleeve column, connecting rod, connecting ring, elastic connecting rope, membrane filter bag, fixing frame, and connecting hole, enables the device to be used by fixing the tension spring at the bottom of the connecting column and connecting the tension spring to the corresponding connecting hole on the fixing frame using the connecting rod, thereby fixing the membrane filter bag and facilitating installation and disassembly. The membrane filter bag uses PTFE membrane material with a pore size ≤0.3μm, achieving a filtration efficiency of up to 99.9% for fine dust. The synergistic effect of the two filtration methods significantly improves the overall dust removal efficiency. The membrane filter bag can be quickly disassembled and installed, reducing the time for replacing a single filter bag to less than 2 minutes. The electrostatic dust removal module uses a high-voltage electric field to charge dust particles, achieving preliminary capture of large dust particles (particle size >5μm), with a dust removal efficiency of over 80%. The pulse cleaning device includes a pressure sensor installed above the filter bag to monitor the pressure difference across the filter bag in real time. When the differential pressure reaches the set threshold, the PLC control system automatically starts the pulse cleaning program, adjusting the pulse jet pressure (0.2-0.6MPa), jet interval (1-10 min), and jet time (0.1-0.3s) according to different operating conditions to ensure effective cleaning while reducing compressed air consumption. Furthermore, the cleaning system employs a compartment-by-compartment alternating cleaning method to prevent a decline in the overall performance of the dust collector due to cleaning issues.
[0027] 2. This utility model, through the coordinated arrangement of the support frame, protective cover, motor, rotating shaft, screw conveyor, vibrating motor, and vibration plate, enables the dust collector's inner wall to have an anti-stick coating during use, reducing dust adhesion and accumulation, thus enhancing the overall protection of the device. The operator drives the motor to control the rotating shaft, which in turn drives the screw conveyor to rotate, improving transport and transmission. The operator also drives the vibrating motor, which, combined with the vibration plate, strengthens vibration and reduces dust adhesion. The outer surface of the connecting frame has connecting holes with connecting posts inserted into their inner walls for easy installation and disassembly. A multi-chamber unloading device at the bottom of the dust collector automatically transports accumulated ash to the discharge port, reducing manual cleaning workload. Additionally, a large inspection door is provided on the side of the casing for easy access for maintenance. Attached Figure Description
[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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 these drawings without creative effort.
[0029] Figure 1This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the dust collection shell structure of this utility model; Figure 3 This is a schematic diagram of the protective cover structure of this utility model; Figure 4 This is a schematic diagram of the connecting frame structure of this utility model.
[0030] In the diagram, 1. Dust collector housing; 2. Mounting frame; 3. Connecting column; 4. Tension spring; 5. Sleeve column; 6. Connecting rod; 7. Connecting ring; 8. Elastic connecting rope; 9. Membrane filter bag; 10. Fixing frame; 11. Connecting socket; 12. Pressure sensor; 13. Electrostatic dust removal module; 14. Pulse cleaning device; 15. Dust collector; 16. Anti-stick coating; 17. Separating grid; 18. Support frame; 19. Protective cover; 20. Motor; 21. Rotating shaft; 22. Screw conveyor; 23. Vibrating motor; 24. Vibration transducer; 25. Connecting frame; 26. Second connecting socket; 27. Second connecting column; 28. Multi-cavity unloading device; 29. Fixing collar; 30. Inspection door. Detailed Implementation
[0031] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0032] Reference Figure 1-4A cement dust collector includes a dust collection shell 1. An installation frame 2 is fixedly connected to the inner wall of the dust collection shell 1. A connecting column 3 is fixedly connected to the bottom end of the installation frame 2. A tension spring 4 is fixedly connected to the bottom end of the connecting column 3. A sleeve column 5 is fixedly connected to the bottom end of the tension spring 4. A connecting rod 6 is rotatably connected to the outer surface of the sleeve column 5. A connecting ring 7 is fixedly connected to the inner wall of the dust collection shell 1. An elastic connecting rope 8 is provided on the outer surface of the connecting ring 7. A membrane filter bag 9 is sleeved on the outer surface of the elastic connecting rope 8. A fixing frame 10 is provided on the top of the membrane filter bag 9. The tension spring 4 is fixedly connected to the bottom end of the connecting column 3. The connecting rod 6 is used to fix and connect the tension spring 4 to the connecting hole 11 on the fixing frame 10, thereby fixing the membrane filter bag 9 and facilitating installation and disassembly. The membrane filter bag 9 uses PTFE membrane material with a pore size ≤0.3μm and a filtration efficiency of up to 99.9% for fine dust. The two filtration methods work synergistically to significantly improve overall dust removal efficiency. The membrane filter bag 9 can be quickly disassembled and installed, reducing the time for replacing a single filter bag to less than 2 minutes. The electrostatic dust removal module uses a high-voltage electric field to charge dust particles, achieving preliminary capture of large dust particles with a diameter >5μm, with a dust removal efficiency of over 80%. The pulse cleaning device 14 includes a pressure sensor installed above the filter bag to monitor the pressure difference across the filter bag in real time. When the pressure difference reaches a set threshold, the PLC control system automatically starts the pulse cleaning program, adjusting the pulse jet pressure (0.2-0.6MPa), jet interval (1-10min), and jet time (0.1-0.3s) according to different operating conditions to ensure effective cleaning while reducing compressed air consumption.In addition, the dust removal system adopts a compartment-by-compartment alternating dust removal method to avoid a decrease in the overall performance of the dust collector due to dust removal. A connection hole 11 is provided on the outer surface of the fixed frame 10, and the connecting rod 6 is threadedly connected to the inner wall of the connection hole 11. A pressure sensor 12 is installed on the top of the membrane filter bag 9. An electrostatic dust removal module 13 is fixedly connected to the bottom of the mounting frame 2. A pulse cleaning device 14 is fixedly connected to the inner wall of the dust collection housing 1, and a dust collector 15 is fixedly connected to the bottom of the dust collection housing 1. The inner wall of the dust collector 15 is provided with a protective layer. The dust collector 15 has an adhesive coating 16. A separation grid 17 is fixedly connected to the inner wall of the dust collector housing 1. A support frame 18 is fixedly connected to the inner wall of the dust collector 15. A protective cover 19 is fixedly connected to the bottom of the support frame 18. A motor 20 is fixedly connected to the inner wall of the protective cover 19. A rotating shaft 21 is fixedly connected to the output end of the motor 20. A screw conveyor rod 22 is fixedly connected to the bottom end of the rotating shaft 21. A vibrating motor 23 is installed on the outer surface of the dust collector 15. A vibration plate 24 is fixedly connected to the output end of the vibrating motor 23. The bottom end of the dust collector 15... A connecting frame 25 is fixedly connected. A second connecting hole 26 is opened on the outer surface of the connecting frame 25. A second connecting post 27 is inserted into the inner wall of the second connecting hole 26. A multi-cavity unloading device 28 is fixedly connected to the bottom end of the second connecting post 27. A fixing collar 29 is threadedly connected to the outer surface of the second connecting post 27. Inspection doors 30 are provided on the outer surfaces of the dust collection housing 1 and the dust collector 15. An anti-stick coating 16 is provided on the inner wall of the dust collector 15 to reduce dust adhesion and accumulation, making it difficult to clean and enhancing the protection of the overall device. The operator drives the motor 20 to control the rotation of the rotating shaft 21. The rotation of the rotating shaft 21 drives the spiral conveyor rod 22 to rotate, enhancing the transportation and transmission. The operator drives the vibration motor 23 in conjunction with the vibration plate 24 to enhance vibration and reduce dust adhesion. The second connecting hole 26 is opened on the outer surface of the connecting frame 25. A second connecting post 27 is inserted into the inner wall of the second connecting hole 26 for easy installation and disassembly. A multi-cavity unloading device 28 is set at the bottom of the dust collector to automatically transport the accumulated ash to the discharge port, reducing the amount of manual dust cleaning. Meanwhile, a large inspection door 30 is provided on the side of the casing to facilitate personnel to enter the interior for inspection.
[0033] In this invention, the dust collection housing 1, mounting frame 2, connecting column 3, tension spring 4, sleeve column 5, connecting rod 6, connecting ring 7, elastic connecting rope 8, membrane filter bag 9, fixing frame 10, and connecting hole 11 are arranged in a coordinated manner. During use, the tension spring 4 is fixedly connected to the bottom of the connecting column 3, and the connecting rod 6 is used to fix and connect the tension spring 4 to the connecting hole 11 on the fixing frame 10, thereby fixing the membrane filter bag 9. This facilitates installation and disassembly. The membrane filter bag 9 uses PTFE membrane material with a pore size ≤0.3μm and a filtration efficiency of up to 99.9% for fine dust. The two filtration methods work synergistically to significantly improve overall dust removal efficiency. The membrane filter bag 9 can be quickly disassembled and installed, reducing the time for replacing a single filter bag to less than 2 minutes. The electrostatic dust removal module uses a high-voltage electric field to charge dust particles, achieving preliminary capture of large dust particles with a diameter >5μm, with a dust removal efficiency of over 80%. The pulse cleaning device 14 includes a pressure sensor installed above the filter bag to monitor the pressure difference across the filter bag in real time. When the pressure difference reaches a set threshold, the PLC control system automatically starts the pulse cleaning program, adjusting the pulse jet pressure (0.2-0.6MPa), jet interval (1-10min), and jet time (0.1-0.3s) according to different operating conditions to ensure effective cleaning while reducing compressed air consumption. Furthermore, the dust removal system adopts a compartmentalized, alternating dust removal method to avoid a decline in the overall performance of the dust collector due to dust removal. Through the coordinated arrangement of the support frame 18, protective cover 19, motor 20, rotating shaft 21, screw conveyor 22, vibrating motor 23, and vibration plate 24, the inner wall of the dust collector 15 is coated with an anti-stick coating 16 to reduce dust adhesion and accumulation, thus enhancing the overall protection of the device. The operator drives the motor 20 to control the rotation of the rotating shaft 21, which in turn drives the screw conveyor 22 to rotate, strengthening the transport and transmission. The operator drives the vibrating motor 23 in conjunction with the vibration plate 24 to enhance vibration and reduce dust adhesion. A second connecting hole 26 is provided on the outer surface of the connecting frame 25, and a second connecting post 27 is inserted into the inner wall of the second connecting hole 26 for easy installation and disassembly. A multi-chamber unloading device 28 is installed at the bottom of the dust collector to automatically transport accumulated dust to the discharge port, reducing the workload of manual dust removal. At the same time, a large-size inspection door 30 is provided on the side of the casing for easy access for internal maintenance.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A cement dust collector, comprising a dust collection shell (1), characterized in that: The inner wall of the dust collection housing (1) is fixedly connected to an installation frame (2), the bottom end of the installation frame (2) is fixedly connected to a connecting column (3), the bottom end of the connecting column (3) is fixedly connected to a tension spring (4), the bottom end of the tension spring (4) is fixedly connected to a sleeve column (5), the outer surface of the sleeve column (5) is rotatably connected to a connecting rod (6), the inner wall of the dust collection housing (1) is fixedly connected to a connecting ring (7), the outer surface of the connecting ring (7) is provided with an elastic connecting rope (8), the outer surface of the elastic connecting rope (8) is sleeved with a membrane filter bag (9), the top of the membrane filter bag (9) is provided with a fixing frame (10), the outer surface of the fixing frame (10) is provided with a connecting insertion hole (11), and the connecting rod (6) is threadedly connected to the inner wall of the connecting insertion hole (11).
2. A cement dust collector according to claim 1, characterized in that: A pressure sensor (12) is provided on the top of the membrane filter bag (9), and an electrostatic dust removal module (13) is fixedly connected to the bottom of the mounting frame (2).
3. A cement dust collector according to claim 2, characterized in that: The inner wall of the dust collection housing (1) is fixedly connected to a pulse cleaning device (14), and the bottom of the dust collection housing (1) is fixedly connected to a dust collector (15).
4. A cement dust collector according to claim 3, characterized in that: The inner wall of the dust collector (15) is provided with an anti-stick coating (16), and the inner wall of the dust collection housing (1) is fixedly connected with a separation grid (17).
5. A cement dust collector according to claim 4, characterized in that: The inner wall of the dust collector (15) is fixedly connected to a support frame (18), and the bottom of the support frame (18) is fixedly connected to a protective cover (19).
6. A cement dust collector according to claim 5, characterized in that: A motor (20) is fixedly connected to the inner wall of the protective cover (19), and a rotating shaft (21) is fixedly connected to the output end of the motor (20).
7. A cement dust collector according to claim 6, characterized in that: The bottom end of the rotating shaft (21) is fixedly connected to a spiral conveying rod (22), and a vibrating motor (23) is provided on the outer surface of the dust collector (15).
8. A cement dust collector according to claim 7, characterized in that: The output end of the vibration motor (23) is fixedly connected to a vibration plate (24), and the bottom end of the dust collector (15) is fixedly connected to a connecting frame (25).
9. A cement dust collector according to claim 8, characterized in that: The outer surface of the connecting frame (25) is provided with a second connecting hole (26), and a second connecting post (27) is inserted into the inner wall of the second connecting hole (26).
10. A cement dust collector according to claim 9, characterized in that: The bottom end of the second connecting column (27) is fixedly connected to a multi-cavity unloading device (28), and a fixing collar (29) is threadedly connected to the outer surface of the second connecting column (27). Inspection doors (30) are provided on the outer surfaces of the dust collection housing (1) and the dust collector (15).