A coal powder filter

Abstract

This utility model discloses a pulverized coal filter, relating to the technical field of pulverized coal treatment and filtration equipment. The pulverized coal filter includes an inlet pipe and a tank. The inlet pipe is located on one side of the upper part of the tank. A connecting pipe is fixedly connected to the upper part of the tank, and a support frame is fixedly connected to the lower part of the tank. A GF100 nitrogen pulse device is fixedly connected to the upper part of the connecting pipe. The inlet pipe and the connecting pipe are fixedly connected to each other on the side. A valve is fixedly connected to the inlet pipe. A valve is fixedly connected to the lower part of the ash hopper. A discharge pipe is fixedly connected to one side of the lower part of the tank. An SLD122 vibration transducer is fixedly connected to the filter cylinder. A motor on the mounting plate below the filter cylinder drives a rotating shaft to rotate, causing the stirring blades on the rotating shaft to rotate at high speed. Centrifugal force is used to throw gas from the filter cylinder onto the inner wall of the tank. Subsequently, the gas flows into the filter cylinder. As the core filtration component, the filter cylinder's porous structure further refines and intercepts pulverized coal and impurities in the gas, which then fall into the lower ash hopper.

Description

Technical Field

[0001] This utility model relates to the technical field of coal powder filtration equipment, and in particular to a coal powder filter. Background Technology

[0002] Patent application number CN208728007U discloses a pulverized coal conveying filter. This technical solution addresses the problem that existing pulverized coal conveying filters often require external equipment for further crushing, which is inconvenient. However, in actual use, the following problems still exist: In the pulverized coal injection process of blast furnaces, in order to achieve structural energy conservation and improve economic efficiency, pulverized coal needs to partially replace coke. However, in actual production, the pulverized coal produced by the coal mill is often mixed with non-coal lightweight impurities such as wood chips and shredded woven bags. Once these impurities enter the pulverized coal pipeline, they can easily cause pipeline blockage and pulverized coal injection lance blockage, which seriously affects the continuous and stable operation of the blast furnace pulverized coal injection system. For example, in the pulverized coal system of the ironmaking department of a certain steel branch, the addition of a certain proportion of coke powder and coke particles to the raw coal resulted in an increase in impurities in the pulverized coal particles produced. Plant fiber and impurity particles frequently blocked the blast furnace injection lance device. Currently available coal powder filters have many drawbacks. Some filters only have basic filtration functions, and most filters are difficult to clean and maintain. When filter residue adheres to the inside of the filter, it not only hinders the normal flow of coal powder and affects filtration efficiency, but may also cause equipment failure. Some filters require frequent manual disassembly and cleaning, which is cumbersome, time-consuming and labor-intensive. In addition, coal powder leakage is easy to occur during the cleaning process, which not only pollutes the environment, but also poses a great safety hazard. For example, leaked coal powder may form a suspended dust cloud under certain conditions, which can easily cause an explosion when exposed to an open flame. Furthermore, some filters have defects in structural design. For example, the design of splitting the coal powder pipeline in two can solve some cleaning problems, but it will increase the conveying resistance, aggravate the wear of elbows, and reduce the service life of the equipment. Given the stringent requirements for pulverized coal quality in industrial production, and the problems exposed by existing pulverized coal filters in practical applications, such as poor filtration effect, difficulty in cleaning and maintenance, and unreasonable structural design, it is urgent to develop a new type of pulverized coal filter that is efficient, easy to maintain, and has a reasonable structure. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a coal powder filter that can solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a coal powder filter, comprising a feed pipe and a tank, wherein the feed pipe is disposed on one side above the tank, a connecting pipe is fixedly connected to the top of the tank, and a support frame is fixedly connected to the bottom of the tank; A GF100 nitrogen pulse device is fixedly connected to the top of the connecting pipe. The feed pipe is fixedly connected to the side of the connecting pipe. A valve is fixedly connected to the feed pipe. A filter cylinder is provided inside the tank. The connecting pipe is fixedly connected to the top of the filter cylinder. A dust collection hopper is fixedly connected to the bottom of the filter cylinder. An installation plate is fixedly connected to the bottom of the filter cylinder. A motor is fixedly connected to the installation plate. A rotating shaft is fixedly connected to the output end of the motor. Stirring blades are evenly connected to the rotating shaft. A valve is fixedly connected below the ash collection hopper, and a discharge pipe is fixedly connected to one side of the lower part of the tank body; An SLD122 vibration transducer is fixedly connected to the filter cartridge, and an electrical conduit is fixedly connected to the SLD122 vibration transducer. The other end of the electrical conduit is fixedly connected to a DM1 vibration generator.

[0005] Preferably, the GF100 nitrogen pulse device includes a pulse controller, a nitrogen storage tank, and a pulse jet pipe connected to the connecting pipe, and the motor is an explosion-proof motor.

[0006] Preferably, the bottom of the support frame is provided with a shock-absorbing pad, and the connection between the feed pipe and the connecting pipe is provided with a sealing gasket.

[0007] Preferably, the ash collection hopper has a frustum conical shape.

[0008] Compared with the prior art, the beneficial effects of this utility model are: (1) In order to avoid the filter cartridge being affected by the accumulation of impurities, the coal powder filter is equipped with multiple cleaning devices. On the one hand, the SLD122 vibration transducer fixed on the filter cartridge generates high-frequency vibration under the action of the signal transmitted by the DM1 vibration generator through the conduit, so that the impurities attached to the surface of the filter cartridge are shaken off. On the other hand, when the stirring blades on the rotating shaft rotate, they stir the area below the filter cartridge and above the ash collection hopper to prevent impurities from accumulating in this area. The GF100 nitrogen pulse device above the connecting pipe will periodically or according to the pressure difference inside and outside the filter cartridge to spray high-pressure nitrogen into the connecting pipe. The nitrogen will further blow off the stubborn impurities attached to the filter cartridge, realize the efficient regeneration of the filter cartridge, and promote its smooth fall into the ash collection hopper.

[0009] (2) After the coal powder filter enters the tank, the motor on the mounting plate below the filter cylinder drives the rotating shaft to rotate. The stirring blades on the rotating shaft rotate at high speed. Using centrifugal force, the gas is thrown from the filter cylinder to the inner wall of the tank. Then, the gas flows to the filter cylinder. As the core filter component, the filter cylinder's porous structure further intercepts the coal powder and impurities in the gas. After interception, the gas falls into the ash collection hopper below. Clean gas smaller than the filter cylinder's aperture passes through the filter cylinder and is discharged from the tank through the discharge pipe. The intercepted coal powder and impurities adhere to the inner surface of the filter cylinder. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of a pulverized coal filter according to the present invention; Figure 2 This is a bottom view schematic diagram of a coal powder filter according to the present invention; Figure 3 This is a schematic cross-sectional view of a pulverized coal filter according to the present invention; Figure 4 This is a cross-sectional schematic diagram of a coal powder filter according to the present invention.

[0011] Reference numerals in the attached drawings: 1. Feed pipe; 2. Tank body; 3. Connecting pipe; 4. GF100 nitrogen pulse device; 5. Valve; 6. Discharge pipe; 7. Support frame; 8. Ash collection hopper; 9. Filter cartridge; 10. Rotating shaft; 11. Motor; 12. Mounting plate; 13. SLD122 vibration transducer; 14. Electrical conduit; 15. DM1 vibration generator. Detailed Implementation

[0012] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0013] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 limitations on this utility model.

[0014] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0015] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0016] Please see Figure 1-4 The present invention provides a technical solution: a coal powder filter, including a feed pipe 1 and a tank 2. The feed pipe 1 is located on one side above the tank 2. A connecting pipe 3 is fixedly connected to the top of the tank 2, and a support frame 7 is fixedly connected to the bottom of the tank 2. A GF100 nitrogen pulse device 4 is fixedly connected above the connecting pipe 3. The feed pipe 1 is fixedly connected to the side of the connecting pipe 3. A valve 5 is fixedly connected to the feed pipe 1. The tank body 2 is equipped with a filter cylinder 9. The connecting pipe 3 is fixedly connected to the top of the filter cylinder 9. The filter cylinder 9 is fixedly connected to the bottom of the ash collection hopper 8. The filter cylinder 9 is fixedly connected to the bottom of the mounting plate 12. The mounting plate 12 is fixedly connected to the motor 11. The output end of the motor 11 is fixedly connected to the rotating shaft 10. The rotating shaft 10 is evenly connected with stirring blades. The coal-powder-containing gas first enters the system through the feed pipe 1. The valve 5 on the feed pipe 1 can control the gas intake to ensure stable airflow. The gas enters the tank 2 through the side connection between the feed pipe 1 and the connecting pipe 3. After entering the tank 2, the motor 11 on the mounting plate 12 below the filter cylinder 9 drives the rotating shaft 10 to rotate. The stirring blades on the rotating shaft 10 rotate at high speed, using centrifugal force to throw the gas from the filter cylinder 9 onto the inner wall of the tank 2. A valve 5 is fixedly connected to the bottom of the ash hopper 8, and a discharge pipe 6 is fixedly connected to one side of the bottom of the tank body 2. An SLD122 vibration transducer 13 is fixedly connected to the filter cartridge 9. An electrical conduit 14 is fixedly connected to the SLD122 vibration transducer 13. The other end of the electrical conduit 14 is fixedly connected to a DM1 vibration generator 15. To prevent the filter cartridge 9 from being affected by the accumulation of impurities, the equipment is equipped with multiple dust removal devices. The SLD122 vibration transducer 13 fixed on the filter cartridge 9 generates high-frequency vibration under the action of the signal transmitted by the DM1 vibration generator 15 through the wire conduit 14, causing the impurities attached to the surface of the filter cartridge 9 to be shaken off. Working principle: The coal powder-containing gas first enters the system through the feed pipe 1. The valve 5 on the feed pipe 1 can control the gas intake to ensure stable airflow. The gas enters the tank 2 through the side connection between the feed pipe 1 and the connecting pipe 3. At this time, because the internal space of the tank 2 suddenly expands compared to the pipeline, the airflow velocity decreases significantly. Some larger coal powder particles and impurities initially settle under gravity, reducing the load for subsequent filtration. After entering the tank 2, the motor 11 on the mounting plate 12 below the filter cylinder 9 drives the rotating shaft 10 to rotate. The stirring blades on the rotating shaft 10 rotate at high speed, using centrifugal force to throw the gas from the filter cylinder 9 onto the inner wall of the tank 2. Then, the gas flows to the filter cylinder 9. As the core filtration component, the porous structure of the filter cylinder 9 further refines the interception of coal powder and impurities in the gas. After interception, it falls into the ash collection hopper 8 below. Clean gas smaller than the aperture of the filter cylinder 9 passes through the filter cylinder 9 and is discharged from the tank 2 through the discharge pipe 6. The intercepted coal powder and impurities adhere to the inner surface of the filter cylinder 9. To prevent the filter cartridge 9 from being affected by the accumulation of impurities, the equipment is equipped with multiple dust removal devices. On the one hand, the SLD122 vibration transducer 13 fixed on the filter cartridge 9 generates high-frequency vibration under the action of the signal transmitted by the DM1 vibration generator 15 through the conduit 14, causing the impurities attached to the surface of the filter cartridge 9 to be shaken off. On the other hand, when the stirring blades on the rotating shaft 10 rotate, they stir the area below the filter cartridge 9 and above the dust collection hopper 8 to prevent impurities from accumulating in this area and to facilitate their smooth fall into the dust collection hopper 8. In addition, the GF100 nitrogen pulse device 4 above the connecting pipe 3 will periodically or be triggered according to the pressure difference inside and outside the filter cartridge 9 to spray high-pressure nitrogen into the connecting pipe 3. The nitrogen will further blow off the attached stubborn impurities, thus achieving efficient regeneration of the filter cartridge 9. The SLD122 vibration transducer 13 contains key components such as piezoelectric ceramics. When an electric field is applied to it, the piezoelectric ceramics will deform and generate high-frequency vibrations. These vibrations are transmitted and amplified through structures such as amplitude transformers, and finally the electrical energy is efficiently converted into mechanical energy (ultrasound). By controlling the frequency and intensity of the electric field, vibration outputs of different frequencies and powers can be achieved. The GF100 nitrogen pulse device 4 utilizes the rapid release of high-pressure nitrogen to generate a pulse effect. External nitrogen enters the nitrogen tank through the inlet and outlet pipes via the nitrogen cylinder and the inlet and outlet ports. After the nitrogen tank is filled with nitrogen and the pressure stabilizes, the nitrogen filling valve is closed and the nitrogen exhaust valve is opened. At this time, a large pressure difference is formed inside and outside, and the high-pressure nitrogen inside the nitrogen cylinder is depressurized. The high-pressure nitrogen inside the tank passes through several large holes at the bottom of the nitrogen cylinder and pushes the bottom of the pulse valve and the pulse valve body upward along the nitrogen cylinder, thereby opening the top opening of the inner tube. The high-pressure nitrogen inside the nitrogen tank enters the pulse tube from the inner tube and then sprays a nitrogen shock wave from the pulse port. It can be used for dust cleaning and other scenarios. The removed impurities eventually collect in the ash collection hopper 8. The valve 5 below the ash collection hopper 8 controls the discharge of impurities. The impurities are transported to the designated location through the discharge pipe 6 to complete the entire filtration process. At the same time, the support frame 7 below the tank 2 provides stable support for the equipment, ensuring the safety and stability of the overall operation. In terms of filtration efficiency, a multi-stage filtration mode of "preliminary gravity settling + fine interception by filter cartridge 9" is adopted, which can process coal powder impurities of different particle sizes in layers. First, the space of tank 2 is expanded to achieve preliminary separation of large particles of impurities. Then, the porous structure of filter cartridge 9 accurately intercepts fine impurities, which greatly improves the overall filtration effect. It can effectively remove various impurities in coal powder, ensure the cleanliness of the discharged gas, and meet relevant process and environmental protection requirements. In terms of operational stability, the multiple dust removal devices work together to greatly reduce the probability of filter cartridge 9 clogging. The high-frequency vibration generated by the SLD122 vibration transducer 13, the stirring of the stirring blade driven by the rotating shaft 10, and the high-pressure injection of the GF100 nitrogen pulse device 4 clean the filter cartridge 9 from different angles, avoiding the decrease in filtration efficiency caused by the accumulation of impurities, ensuring that the equipment can operate stably for a long time, and reducing production interruptions caused by shutdown for cleaning.

[0017] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A pulverized coal filter, comprising an inlet pipe (1) and a tank (2), characterized in that: The feed pipe (1) is located on one side above the tank body (2), a connecting pipe (3) is fixedly connected above the tank body (2), and a support frame (7) is fixedly connected below the tank body (2). A GF100 nitrogen pulse device (4) is fixedly connected above the connecting pipe (3). The feed pipe (1) is fixedly connected to the side of the connecting pipe (3). A filter cylinder (9) is provided inside the tank (2). The connecting pipe (3) is fixedly connected to the top of the filter cylinder (9). A dust collection hopper (8) is fixedly connected below the filter cylinder (9). An installation plate (12) is fixedly connected below the filter cylinder (9). A motor (11) is fixedly connected on the installation plate (12). A rotating shaft (10) is fixedly connected to the output end of the motor (11). An SLD122 vibration transducer (13) is fixedly connected to the filter cartridge (9), and an electrical conduit (14) is fixedly connected to the SLD122 vibration transducer (13). The other end of the electrical conduit (14) is fixedly connected to a DM1 vibration generator (15).

2. A pulverized coal filter according to claim 1, characterized in that: A valve (5) is fixedly connected to the feed pipe (1), and stirring blades are uniformly connected to the rotating shaft (10).

3. A pulverized coal filter according to claim 2, characterized in that: A valve (5) is fixedly connected below the ash collection hopper (8), and a discharge pipe (6) is fixedly connected to one side below the tank body (2).

4. A pulverized coal filter according to claim 3, characterized in that: The GF100 nitrogen pulse device (4) includes a pulse controller, a nitrogen storage tank, and a pulse jet pipe connected to the connecting pipe (3).

5. A pulverized coal filter according to claim 4, characterized in that: The motor (11) is an explosion-proof motor.

6. A pulverized coal filter according to claim 5, characterized in that: The bottom of the support frame (7) is provided with a shock-absorbing pad.

7. A pulverized coal filter according to claim 6, characterized in that: A sealing gasket is provided at the connection between the feed pipe (1) and the connecting pipe (3).

8. A pulverized coal filter according to claim 7, characterized in that: The ash collection hopper (8) has a frustum conical structure.

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