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The working principle of the automatic winding filter is analyzed step by step
The working principle of the automatic winding filter is analyzed step by step(1) Initial filtration stageWhen the automatic winding filter device starts to work, air containing dust, particulate matter, and other impurities enters the filter from the air intake. At this time, the new filter material is in the initial working state, it is like a carefully woven fine filter screen, with its fiber structure and covering design, to filter the incoming dusty air. Dust, particles, and other impurities in the air collide with the surface of the filter material under the drive of the airflow and are intercepted and adsorbed by the fiber of the filter material, so that the air through the filter material is purified, and the clean air is discharged from the outlet. In this process, as the filtration continues, more and more dust and particulate matter adhere to the surface of the filter material, the dust capacity of the filter material gradually increases, and the resistance of the filter gradually rises. This is like an originally unobstructed road, as more and more obstacles pile up, the difficulty of vehicle passage is getting greater and greater. The pressure difference before and after the filter will change with the increase of filter dust, and the change of this pressure difference has become an important basis for the subsequent control of filter material replacement, through the real-time monitoring of the pressure difference sensor, to provide key data support for the automatic control system. (2) Trigger replacement signal In the initial filtration stage, with the continuous accumulation of dust and particles on the surface of the filter material, the filter resistance continues to increase, when the filter resistance rises to the pre-set final resistance value, it is like an early warning device is triggered, at this time the differential pressure switch begins to operate. The differential pressure switch is a device that uses the differential pressure between two pipes to send a signal, which is composed of two diaphragm cavities, respectively connected to the inlet and outlet ends of the filter. When the pressure difference before and after the filter reaches the set final resistance value, the high pressure and low pressure enter the high-pressure chamber and low-pressure chamber of the differential pressure switch respectively, and the felt difference pressure causes the pressure sensing diaphragm to deform, and finally starts the micro-switch at the upper end through the mechanical structure such as the railing spring, and the signal is output in the form of an electrical signal. This electrical signal is like an "instruction" that is passed to the controller in the automatic control system. As the "brain" of the whole filter device, the controller has powerful information processing and decision-making capabilities. After receiving the operating signal from the differential pressure switch, it immediately analyzes and processes the signal to determine that the filtration capacity of the current filter material has declined to the extent that it needs to be replaced, to respond quickly and prepare to start the subsequent filter material replacement procedure to ensure that the filter can continue to operate efficiently. (3) Filter material replacement process When the controller receives the signal from the differential pressure switch and confirms the need to replace the filter material, it will immediately issue an instruction to start the motor in the drive system. The motor, as the power source of the entire transmission system, begins to operate, converting electrical energy into mechanical energy and producing powerful torque. The rotation of the motor is decelerated by the reducer to increase the torque so that the output speed and torque can meet the needs of the filter material winding. The reducer is like a "change gear" that converts the high-speed rotation of the motor into a low-speed high-torque rotation suitable for the winding of the filter material, ensuring that the filter material can be replaced smoothly and accurately. The power processed by the reducer is transmitted to the scroll in the blanking box through the transmission of the chain and sprocket. The chain and sprocket work closely together, just like the chain and gears of a bicycle, to transmit power to the scroll accurately and drive the scroll to start turning. With the rotation of the scroll, the dirty filter material is gradually wound up, at the same time, the new clean filter material is slowly released from the upper feeding box, driven by the scroll, gradually replaces the dirty filter material, and forms a new filter layer on the filter surface. The whole filter material replacement process is carried out in an orderly manner under the precise control of the automatic control system, ensuring the continuity and stability of the filtration work. (4) replacement and re-filtering When the filter material is driven by the scroll to the preset length in the controller, it means that the new clean filter material has completely replaced the dirty filter material, and the filter material replacement is about to be completed. At this time, sensors installed in the drive system, such as grating sensors or Angle sensors, will monitor the operating position and length information of the filter material in real-time, and feed this information to the controller. After receiving the signal from the sensor, the controller, after analysis and judgment, confirms that the filter material has been run to the appropriate position and has reached the preset replacement length, and immediately issues an instruction to disconnect the power supply of the motor and make the motor stop running. With the motor stopped, the filter material replacement process officially ended. At this time, the new clean filter material is in place, and the resistance of the filter rapidly decreases and returns to the normal working range. The pressure difference sensor monitors the pressure difference before and after the filter in real-time. When the pressure difference drops to the set lower limit value, the automatic control system confirms that the filter device has returned to a good working state, so the equipment starts filtering again. The new dust-containing air enters the filter again from the air intake, is purified under the action of the new filter material, and the clean air is discharged from the air outlet, so the cycle is repeated to ensure the continuous progress of the air filtration work and provide people with a clean and healthy air environment. |
