Automatic interlocking control device for timing operation of rotary drying kiln

Abstract

The utility model provides an automatic interlocking control device for timing operation of a rotary drying kiln, which comprises a power switch, the power switch comprises a stop switch and a start switch, the stop switch is connected with the start switch in series, the start switch is connected with a miniature relay in series, and the miniature relay is connected with a time relay in series. The time relay is connected with the frequency converter in series, and the frequency converter is connected with the drying kiln. According to the utility model, the miniature relay, the time relay and the frequency converter are ingeniously combined to realize the automatic interlocking control of the timing operation of the rotary drying kiln; on one hand, the timing and constant-speed operation of the drying kiln can be realized through the interlocking device; and on the other hand, the problem that an existing drying kiln device cannot automatically achieve automatic periodic circulation of running, stopping and running is solved. The device is simple, effective, high in reliability and high in safety coefficient.

Description

Technical Field

[0001] The utility model relates to the field of electrical control, and more specifically to a rotary drying kiln timing operation automatic interlock control device. Background Art

[0002] The rotary drying kiln, as one of the core equipment in industrial production, plays an irreplaceable role in the production processes of steel, non-ferrous metals, cement, etc. due to its unique working principle and wide application fields. According to its working principle, the drying kiln is a rotary heat treatment device mainly used for roasting or sintering solid materials at high temperatures. Raw materials are added inside the kiln body, and the temperature inside the kiln is raised to the specified process requirements through external heating, thereby realizing physical and chemical changes of the materials during the drying process. The rotary drying kiln has the following advantages: High efficiency: The rotary kiln adopts a continuous operation mode, with high production efficiency, capable of meeting the needs of large-scale production. Easy to automate control: Modern rotary kilns are equipped with advanced automatic control systems, capable of precisely controlling parameters such as temperature and rotation speed, improving the consistency of product quality. Good environmental performance: By optimizing combustion technology and waste gas treatment systems, the rotary kiln can significantly reduce waste gas emissions, meeting the requirements of environmental protection regulations. Versatility: The rotary kiln is not only applicable to the steelmaking process, but also can be used in the production of building materials such as cement, lime, ceramics, as well as the smelting of non-ferrous metals and other fields. The main advantages of the drying kiln also include convenient temperature control, strong adaptability, and simple operation. It can control the temperature inside the cylinder by adjusting the amount of fuel and oxygen supply, adapting to different production requirements. In addition, due to the rotation of the cylinder, the raw materials can be evenly heated in the cylinder, promoting heat transfer and chemical reactions, and the operation is relatively simple, enabling continuous production. However, although the drying kiln has a large processing capacity, it has the disadvantage of high energy consumption. Since the combustion process requires a large amount of heat energy, the energy consumption is relatively high. In particular, the current drying kiln equipment cannot accurately adjust the production time according to the production needs in a timely manner, resulting in energy waste caused by the idling of the equipment, which is an urgent problem to be solved.

[0003] The invention patent with the patent publication number "CN110186277A, named as a rotary kiln" specifically discloses a rotary kiln, including a furnace tube and a vibrator. The vibrator includes a vibration plate, a support plate, a pipe fitting, and steel balls. The vibration plate is fixed to the outer side wall of the furnace tube through the support plate. The pipe fitting stands on the vibration plate, and the steel balls are arranged inside the pipe fitting and can freely roll inside the pipe fitting. Compared with the prior art, this rotary kiln has a high material recovery rate, good working performance, long service life, can match the firing time of different materials, good sealing performance, stable pressure, less gas injection volume, and low production cost. However, the rotary kiln mentioned in this invention patent cannot achieve the timing and constant speed operation of the rotary kiln, and at the same time, it does not solve the problem that the current drying kiln equipment cannot automatically realize the operation-stop-operation automatic periodic cycling operation mode.

[0004] The utility model patent with the patent publication number of "CN216814856U, named an automatic temperature control device for a dehydration and drying machine" specifically discloses an automatic temperature control device for a dehydration and drying machine, which includes a drying machine body, a heating mechanism, a temperature sensor, a humidity sensor, an automatic temperature control device and a motor. An air duct is arranged at the upper end of the drying machine body, a water tank is arranged at the side of the drying machine body, and a heating pipe is embedded in the water tank. A heating mechanism is arranged on the inner wall of the side of the drying machine body, a temperature sensor is installed on the inner wall of the drying machine body on the side of the heating mechanism, and a humidity sensor is arranged on the inner wall of the drying machine body on the side of the temperature sensor. The end of the output shaft of the motor is fixedly connected with a positioning arm, and a positioning sleeve is fixedly installed at the end of the positioning arm. This automatic temperature control device for a dehydration and drying machine is convenient for uniformly controlling the temperature inside the drying machine, avoiding uneven heating of ginger slices and affecting the drying effect. At the same time, the device is convenient for utilizing the high-temperature water vapor generated during the drying of ginger slices, avoiding waste of thermal resources. The automatic temperature control device for a dehydration and drying machine provided by the utility model mainly solves the problem of temperature interlocking control. When the temperature reaches the required temperature, heating can be stopped, and when the temperature drops, automatic heating can be realized. However, it fails to solve the problem of controlling the running time and achieving an automatic periodic cyclic operation mode of running - stopping - running.

[0005] The utility model patent with the patent publication number of "CN216582522U, named an automatic cyclic baking mechanism for a filter" specifically discloses a reaction kettle with an automatic pressure relief device, which includes a baking furnace, a pre-baking track, a post-baking track and a tray moving seat. The pre-baking track and the post-baking track are arranged in parallel inside the baking furnace. A moving X slide rail is arranged at the rear end of the baking furnace. A base plate is connected below the tray moving seat, and a moving X slider is arranged on the base plate. The moving X slider slides on the moving X slide rail. A Y-axis slide bar is arranged on the base plate, and a Y-axis slide seat is arranged at the lower end of the tray moving seat. The Y-axis slide seat slides on the Y-axis slide bar. A moving Z cylinder is installed inside the tray moving seat, and a lifting plate is connected to the driving end of the moving Z cylinder. The lifting plate moves between the rear end of the pre-baking track and the front end of the post-baking track. This automatic cyclic baking mechanism for a filter changes the single-sided feeding and discharging form of the traditional baking furnace, designs the feeding and discharging on the same side by using a steering structure, saves human resources, and the two-way tracks use the same motor to work. Although the use efficiency of the motor is greatly improved, it still cannot achieve the timed and constant-speed operation of the rotary kiln, and at the same time, it does not solve the problem that the current drying kiln equipment cannot automatically achieve the automatic periodic cyclic operation mode of running - stopping - running. Utility Model Content

[0006] To solve the above problems, the utility model provides a timed operation automatic interlocking control device for a rotary drying kiln.

[0007] The technical solution of the utility model is realized as follows: A rotary drying kiln timing operation automatic interlock control device includes a power switch, the power switch includes a stop switch and a start switch, the stop switch and the start switch are connected in series, the start switch is connected in series with a micro relay, the micro relay is connected in series with a time relay, the time relay is connected in series with a frequency converter, and the frequency converter is connected to the drying kiln;

[0008] Preferably, the time relay is a dual time relay and includes two delay comparators;

[0009] Preferably, the micro relay is an electromagnetic relay.

[0010] The beneficial effects of the utility model are: The utility model can realize the timing operation automatic interlock control of the rotary drying kiln by the ingenious combination of the micro relay, the time relay and the frequency converter. Firstly, the drying kiln can operate at a fixed speed and time through this interlock device; on the other hand, it solves the problem that the current drying kiln equipment cannot automatically realize the automatic periodic cycle of operation - stop - operation. The utility model is simple and effective, has high reliability and high safety factor. Description of the Drawings

[0011] Figure 1 is a schematic structural diagram of the utility model;

[0012] Figure 2 is an electrical circuit diagram of the utility model.

[0013] Part description: 1. Stop switch, 2. Start switch, 3. Micro relay, 4. Time relay, 5. Frequency converter, 6. Drying kiln, 7. Power switch. Detailed Embodiment

[0014] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0015] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 of the present utility model.

[0016] Refer to the attached Figure 1-2, A rotary drying kiln timing operation automatic interlock control device, including a power switch 7. The power switch 7 includes a stop switch 1 and a start switch 2. The stop switch 1 and the start switch 2 are connected in series. Under normal circumstances, the stop switch 1 remains closed and is in a non-operating state. By directly controlling the start switch 2, the operating state of the entire control circuit is realized. When an emergency occurs in the line, the stop switch 1 is directly disconnected to cut off the power supply of the line and ensure safe operation. The start switch 2 is connected in series with a micro relay 3, and the micro relay 3 is connected in series with a time relay 4. The micro relay 3 is an electrical relay that works by using the suction force generated by the current in the input circuit between the electromagnet iron core and the armature to close the coil. It is a transfer station for the entire electrical control interlock to realize the conversion of electrical-magnetic-electrical signals and is the key to providing an electrical signal for the time relay to ensure the operation of the time relay. The time relay 4 is a dual-setting time relay, including two delay comparators. After the two delay comparators set the delay time respectively, the first time delay device starts to work. When the set value is reached, it reverses, triggers the second delay comparator to start running while outputting a control signal. After the second delay device reaches the set value, it triggers the solenoid valve control circuit to open. It is the core electrical component to realize the periodic cycle of the drying kiln running - stopping - running. The time relay 4 is connected in series with a frequency converter 5, and the frequency converter 5 is connected to the drying kiln 6. The time signal is converted into an electrical signal by the time relay 4 and transmitted to the frequency converter 5 to control the operation of the frequency converter 5, and then control the operation of the drying kiln 6. At the same time, the constant-speed operation of the drying kiln 6 can be set through the frequency converter 5.

[0017] During actual operation, the parameters of the time relay 4 are set in advance. After setting the time parameters, the start button 2 is pressed. At this time, the first time relay starts to work, and the drying kiln operates normally. After reaching the specified time requirement, the first time relay stops working, and the second time relay starts to run, and the drying kiln stops automatically. After reaching the set time again, the second time relay stops running, and the first time relay starts to work, and the drying kiln starts to run automatically. Through this interlock device, both the timed and constant-speed operation of the drying kiln and the operating mode of the drying kiln running - stopping - running automatically in a periodic cycle are realized.

[0018] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A rotary drying kiln timing operation automatic interlock control device, characterized in that It includes a power switch (7), and the power switch (7) includes a stop switch (1) and a start switch (2). The stop switch (1) and the start switch (2) are in series. The start switch (2) is in series with a micro relay (3). The micro relay (3) is in series with a time relay (4). The time relay (4) is in series with a frequency converter (5). The frequency converter (5) is connected to a drying kiln (6).

2. The automatic interlock control device for timed operation of a rotary drying kiln according to claim 1, characterized in that The time relay (4) is a dual time relay and includes two delay comparators.

3. The automatic interlocking control device for timed operation of a rotary drying kiln according to claim 1 or 2, characterized in that The micro relay (3) is an electromagnetic relay.

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