Dust removal device for intermediate frequency furnace

Abstract

The utility model relates to the technical field of steel plant intermediate frequency furnace equipment, and disclose a kind of intermediate frequency furnace dust removal device, including pedestal, further include: setting in the front surface of pedestal PLC controller, the front surface of pedestal is provided with frequency converter, the top of pedestal is provided with air inlet pipe, the outside of air inlet pipe is provided with infrared thermal imager;Washing assembly, setting in the top of pedestal, the washing assembly includes fixedly connected with the liquid tank of the top of pedestal, the outside of liquid tank is fixedly connected with conveying pump, the liquid inlet of conveying pump is communicated with liquid tank, the liquid outlet of conveying pump is communicated with connecting pipe, one end of air inlet pipe is communicated with shell, the inside of shell is provided with spray head;The utility model can adjust the speed of fan body according to the concentration of dust smoke of intermediate frequency furnace by setting infrared thermal imager, PLC controller and frequency converter, to reduce power consumption, reduce production cost.

Description

Technical Field

[0001] This utility model relates to the technical field of medium-frequency furnace equipment in steel plants, specifically a dust removal device for medium-frequency furnaces. Background Technology

[0002] A steel mill is an enterprise that specializes in steel production. It is an industrial facility that transforms raw materials such as iron ore and scrap steel into steel and related products through a series of processes. An intermediate frequency furnace is a power supply device that converts 50Hz AC power into intermediate frequency power (the frequency range is usually above 150Hz to 20kHz). Based on the principle of electromagnetic induction, it forms an adjustable intermediate frequency current through rectification and inversion, which causes the induction coil to generate an alternating magnetic field, cutting metal materials to generate eddy currents, thereby heating or melting the metal.

[0003] When an intermediate frequency furnace is operating normally, grease, paint, coatings, or damp raw materials on the surface of the furnace charge will volatilize and burn at high temperatures, producing dust and smoke. At the same time, metal materials (especially iron and steel) react with oxygen at high temperatures to produce oxides, forming smoke and dust. Furthermore, the refractory materials inside the intermediate frequency furnace may slightly volatilize or decompose under prolonged high temperatures, releasing gases and particles. If the exhaust system of the intermediate frequency furnace is not designed properly or operates poorly, the flue gas generated inside the furnace cannot be effectively discharged, accumulating and overflowing to form visible smoke. Since the intermediate frequency furnace continuously releases dust and smoke during the production process, fans are needed to continuously remove the dust and smoke, which consumes a great deal of electricity, leading to increased costs. Utility Model Content

[0004] The purpose of this invention is to provide a dust removal device for medium-frequency furnaces, so as to solve the problem that the dust and smoke generated during the production process of medium-frequency furnaces need to be continuously extracted by fans, which leads to an increase in production costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dust removal device for a medium-frequency furnace, comprising a base, and further comprising:

[0006] A PLC controller is installed on the front surface of the base. A frequency converter is installed on the front surface of the base. An air inlet pipe is installed on the top of the base. An infrared thermal imager is installed on the outside of the air inlet pipe.

[0007] A cleaning assembly is disposed on the top of the base. The cleaning assembly includes a liquid storage tank fixedly connected to the top of the base. A delivery pump is fixedly connected to the outside of the liquid storage tank. The inlet of the delivery pump is connected to the liquid storage tank. The outlet of the delivery pump is connected to a connecting pipe. One end of the air inlet pipe is connected to a housing. A nozzle is disposed inside the housing.

[0008] Preferably, the end of the connecting pipe away from the delivery pump is connected to a ring pipe, and the inner wall of the ring pipe is connected to one end of the nozzle.

[0009] Preferably, the fan body is disposed inside the housing, and a first connecting flange is fixedly connected to the outside of the housing.

[0010] Preferably, a filter screen is provided inside the air inlet pipe, and a second connecting flange is fixedly connected to the outside of the air inlet pipe.

[0011] Preferably, a positioning bolt is provided inside the second connecting flange, and a sliding groove is provided inside the air inlet pipe, with a positioning rod fixedly connected to one side of the inner wall of the sliding groove.

[0012] Preferably, a first positioning block is fixedly connected to the outer side of the filter screen, and the number of the first positioning blocks is set to two.

[0013] Preferably, a second positioning block is fixedly connected to the outer side of the filter screen, and a connecting strip is fixedly connected to one side of the second positioning block. The number of the second positioning blocks is set to two.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention utilizes an infrared thermal imager, a PLC controller, and a frequency converter. The infrared thermal imager's camera identifies the concentration of dust and smoke, triggering a speed-up or deceleration of the fan. The infrared camera continuously captures environmental images, and image processing algorithms identify smoke within the images, assessing the dust and smoke concentration. Based on information such as the pixel ratio and color depth of the smoke coverage, the smoke concentration data is transmitted in real-time to the PLC controller. The PLC controller sets the fan's operating speed based on the received dust and smoke concentration data, pre-setting different speed levels for different smoke concentrations. The fan adjusts its speed according to the controller's instructions to achieve energy saving and consumption reduction. Simultaneously, the frequency converter adjusts the power frequency of the fan motor, enabling precise control of the fan's speed. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the dust removal device for medium-frequency furnaces provided by this utility model;

[0017] Figure 2 A schematic diagram of the cleaning component structure provided by this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the air inlet pipe provided by this utility model;

[0019] Figure 4A schematic diagram showing the connection between the filter disc and the air inlet pipe provided by this utility model.

[0020] In the diagram: 1. Base; 2. PLC controller; 3. Frequency converter; 4. Air inlet duct; 5. Infrared thermal imager; 6. Cleaning assembly; 61. Liquid storage tank; 62. Transfer pump; 63. Connecting pipe; 64. Nozzle; 7. Ring pipe; 8. Fan body; 9. First connecting flange; 10. Housing; 11. Filter screen; 12. Second connecting flange; 13. Positioning bolt; 14. Slide groove; 15. Positioning rod; 16. First positioning block; 17. Second positioning block; 18. Connecting strip. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 As shown, a dust removal device for a medium-frequency furnace includes a base 1, and further includes:

[0023] The PLC controller 2, located on the front surface of the base 1, transmits the infrared thermal image and visible light image from the infrared thermal imager 5 to the control computer via a local area network. The control computer uses algorithms to identify and determine the size of the smoke, and sends an electrical signal to the PLC controller 2. The PLC controller 2 then controls the blower body 8. The front surface of the base 1 is equipped with a frequency converter 3, which controls the rotation frequency of the blower body 8. The top of the base 1 is equipped with an air inlet pipe 4, which extracts and transports the smoke and dust generated by the medium frequency furnace. An infrared thermal imager 5 is installed on the outside of the air inlet pipe 4. The infrared thermal imager 5 is a high-precision uncooled infrared detector I650 explosion-proof dual-light infrared thermal imager, which can measure the temperature of the target in real time. It can visually display the high temperature location and dust distribution in the form of thermal imaging, and can detect the temperature and dust distribution from a safe distance, thereby ensuring the safety of the operators.

[0024] A cleaning assembly 6, located on the top of the base 1, is used to clean the fan body 8, which operates for extended periods. This allows dust and other debris adhering to the blades to be removed, ensuring the blades maintain normal operation for longer periods. The cleaning assembly 6 includes a liquid storage tank 61 fixedly connected to the top of the base 1. The liquid storage tank 61 stores cleaning fluid for the fan body 8. A delivery pump 62 is fixedly connected to the outside of the liquid storage tank 61. The delivery pump 62 circulates the liquid inside the liquid storage tank 61. The pump 62 is connected to the storage tank 61, and the outlet of the pump 62 is connected to the connecting pipe 63. The connecting pipe 63 allows the pump to deliver the cleaning fluid. One end of the air inlet pipe 4 is connected to the outer casing 10, which protects the fan body 8. The inner part of the outer casing 10 is equipped with nozzles 64. Multiple nozzles 64 allow the cleaning fluid to be sprayed in multiple directions, thus cleaning and spraying the fan blades of the fan body 8 in all directions.

[0025] refer to Figure 2 and Figure 3 As shown, the end of the connecting pipe 63 furthest from the conveying pump 62 is connected to a ring pipe 7. By setting the ring pipe 7, multiple nozzles 64 can process the blower body 8. The inner wall of the ring pipe 7 is connected to one end of the nozzle 64. The blower body 8 is installed inside the outer casing 10. By setting the blower body 8, dust and smoke near the intermediate frequency furnace can be extracted and transported. A first connecting flange 9 is fixedly connected to the outer side of the outer casing 10. The two connecting flanges facilitate the disassembly and assembly of the air inlet pipe 4 and the outer casing 10, thereby allowing for the cleaning and disassembly of the blower body 8. During maintenance, the air inlet duct 4 is equipped with a filter screen 11. By setting the filter screen 11, the extracted dust and smoke can be initially filtered, reducing the amount of dust adhering to the blades of the fan body 8. The outer side of the air inlet duct 4 is fixedly connected to a second connecting flange 12, and the second connecting flange 12 is equipped with a positioning bolt 13. The air inlet duct 4 has a sliding groove 14 inside. Under the action of the sliding groove 14, it is easy for the staff to disassemble and install the filter screen 11. A positioning rod 15 is fixedly connected to one side of the inner wall of the sliding groove 14. Under the action of the positioning rod 15, it is easy to position the filter screen 11.

[0026] refer to Figure 2 and Figure 4As shown, a first positioning block 16 is fixedly connected to the outer side of the filter screen 11. Under the action of the two first positioning blocks 16, the movement of the filter screen 11 can be kept stable. The number of first positioning blocks 16 is set to two. A second positioning block 17 is fixedly connected to the outer side of the filter screen 11. A connecting strip 18 is fixedly connected to one side of the second positioning block 17. By setting the connecting strip 18, it is convenient for the staff to install the filter screen 11. The number of second positioning blocks 17 is set to two.

[0027] Working principle: When operators need to extract dust and smoke generated during the operation of the medium-frequency furnace using this device, the infrared thermal imager 5 can identify the concentration of dust and smoke through the camera. Then, the infrared thermal image and visible light image are transmitted to the control computer via the local area network. The control computer uses an algorithm to identify and determine the smoke level, and sends an electrical signal to the PLC controller 2. The PLC controller 2 then transmits the electrical signal to the frequency converter 3, thereby controlling the rotation speed of the fan body 8. At the same time, different speed levels of the fan body 8 corresponding to different smoke concentrations can be preset. The fan body 8 adjusts its speed according to the instructions of the PLC controller 2 to achieve the effect of energy saving and consumption reduction.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] 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 dust removal device for a medium-frequency furnace, comprising a base, characterized in that, Also includes: A PLC controller is installed on the front surface of the base. A frequency converter is installed on the front surface of the base. An air inlet pipe is installed on the top of the base. An infrared thermal imager is installed on the outside of the air inlet pipe. A cleaning assembly is disposed on the top of the base. The cleaning assembly includes a liquid storage tank fixedly connected to the top of the base. A delivery pump is fixedly connected to the outside of the liquid storage tank. The inlet of the delivery pump is connected to the liquid storage tank. The outlet of the delivery pump is connected to a connecting pipe. One end of the air inlet pipe is connected to a housing. A nozzle is disposed inside the housing.

2. The dust removal device for a medium-frequency furnace according to claim 1, characterized in that: The end of the connecting pipe furthest from the delivery pump is connected to a ring pipe, and the inner wall of the ring pipe is connected to one end of the nozzle.

3. The dust removal device for a medium-frequency furnace according to claim 1, characterized in that: The fan body is installed inside the housing, and a first connecting flange is fixedly connected to the outside of the housing.

4. The dust removal device for a medium-frequency furnace according to claim 1, characterized in that: The air inlet pipe is equipped with a filter screen inside, and a second connecting flange is fixedly connected to the outside of the air inlet pipe.

5. The dust removal device for a medium-frequency furnace according to claim 4, characterized in that: The second connecting flange is provided with a positioning bolt inside, and the air inlet pipe is provided with a sliding groove inside, with a positioning rod fixedly connected to one side of the inner wall of the sliding groove.

6. The dust removal device for a medium-frequency furnace according to claim 4, characterized in that: The outer side of the filter screen is fixedly connected to a first positioning block, and the number of the first positioning blocks is set to two.

7. The dust removal device for a medium-frequency furnace according to claim 4, characterized in that: A second positioning block is fixedly connected to the outer side of the filter screen, and a connecting strip is fixedly connected to one side of the second positioning block. The number of the second positioning blocks is set to two.

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