Dust remover capable of automatically adjusting filtering resistance and automatic filtering resistance adjusting method

Abstract

The invention relates to a dust remover capable of automatically adjusting filtering resistance, which comprises a dust remover body with an air inlet surface and an air outlet surface; the filter assembly comprises an unwinding mechanism, a winding mechanism and a filter material; the adjusting assembly is arranged on the inner side of the dust remover body, is located between the unwinding mechanism and the winding mechanism and is used for adjusting the unfolding area of the filter material in the dust remover body and the contact angle of the filter material and airflow; the monitoring assembly is arranged on the air inlet face of the dust remover body and used for monitoring the pressure difference value of the two ends of a filter material and obtaining related environment parameters. The electric control assembly comprises a controller and is used for controlling the adjusting assembly to operate according to the numerical value obtained by the monitoring assembly, adjusting the unfolding area of the filter material and the contact angle of the filter material and air flow, and adjusting the resistance of the filter material. According to the invention, the automatic adjustment of the filtering resistance can be realized, the efficient and stable operation of the dust remover under different working conditions is realized, the dust removal effect is improved, and the operation cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of dust collectors, in particular to a dust collector with automatic filtering resistance adjustment and a method for automatic filtering resistance adjustment. Background Art

[0002] As a highly efficient and automated air purification device, the rolling curtain dust collector plays an important role in many fields. By automatically replacing the filter media, it can effectively remove dust particles from dust-laden gases, ensuring that the exhaust gas meets environmental standards and reduces pollution to the atmospheric environment.

[0003] Conventional dust collectors have the following shortcomings in applications with demanding requirements and volatile environments: In locations with large variations in dust concentration, roller curtain dust collectors can quickly reach their dust holding capacity limit under high dust concentrations. As the filter material's surface absorbs more dust, the resistance increases, requiring the fan to consume more energy to maintain airflow. When the filter material becomes clogged, the system's airflow decreases, making it impossible to maintain the rated fresh air volume. For example, in a constant-temperature factory, the rated fresh air volume is required to maintain the internal temperature. However, changes in the filter's resistance cause changes in the fresh air volume, which in turn affects the internal temperature, impacting the production environment and product quality. Summary of the Invention

[0004] To this end, the technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a dust collector with automatic adjustment of filtration resistance and a method for automatic adjustment of filtration resistance, which can realize automatic adjustment of filtration resistance, realize efficient and stable operation of the dust collector under different working conditions, improve dust removal effect and reduce operating costs.

[0005] In a first aspect, to solve the above technical problems, the present invention provides a dust collector with automatic adjustment of filtration resistance, comprising: A dust collector body, the dust collector body having an air inlet surface and an air outlet surface; The filter assembly includes an unwinding mechanism, a rewinding mechanism, and filter material. The unwinding mechanism and the rewinding mechanism are respectively provided at two ends of the dust collector body. The two ends of the filter material can be retracted and wound around the rewinding mechanism and the unwinding mechanism respectively. An adjustment component is provided on the inner side of the dust collector body and located between the unwinding mechanism and the rewinding mechanism, and is used to adjust the expansion area of the filter material in the dust collector body and the contact angle with the airflow; A monitoring component is provided on the air inlet side of the dust collector body, and is used to monitor the pressure difference between the two ends of the filter material and obtain relevant environmental parameters; The electronic control component includes a controller, which is electrically connected to the adjustment component and the monitoring component. The controller is used to control the operation of the adjustment component according to the numerical value obtained by the monitoring component, adjust the expansion area of the filter material and the contact angle with the airflow, and realize the adjustment of the filter material resistance.

[0006] In one embodiment of the present invention, the adjustment assembly includes several parallel reversing transmission units and reversing fixed seats, the reversing transmission unit includes a reversing motor, a transmission belt and a movable roller, the transmission belt is driven by the reversing motor, the movable roller is arranged on the conveyor belt, the reversing fixed seat is arranged on the inner side of the dust collector body, and the filter material is Z-shaped and wound around the movable roller and the reversing fixed seat.

[0007] In one embodiment of the present invention, the monitoring component includes a differential pressure sensor and an environmental monitoring sensor. The differential pressure sensor is used to monitor the differential pressure value on both sides of the filter material, and the environmental monitoring sensor is used to monitor environmental parameters related to the dust holding capacity and serve as a calibration for the differential pressure sensor.

[0008] In one embodiment of the present invention, the environment monitoring sensor includes a dust sensor and a wind speed sensor, the dust sensor is used to monitor dust concentration, and the wind speed sensor is used to monitor airflow speed.

[0009] In one embodiment of the present invention, both the discharge end of the unwinding mechanism and the feed end of the rewinding mechanism are horizontally provided with filter material guide brackets.

[0010] In one embodiment of the present invention, the reversing fixing seat includes a base and a reversing rod arranged on the base.

[0011] In one embodiment of the present invention, the unwinding mechanism includes a first bracket and an unwinding shaft, and the unwinding shaft is fixed to the dust collector body through the first bracket for unwinding the filter material.

[0012] In one embodiment of the present invention, the winding mechanism includes a material changing motor, a second bracket and a winding shaft. The winding shaft is installed on the dust collector body through the bracket and is used to wind up the filter material. The drive shaft of the material changing motor is connected to the winding shaft.

[0013] In a second aspect, in order to solve the above technical problems, the present invention provides a method for automatically adjusting the filtration resistance of a dust collector, which is applicable to the dust collector with automatic filtration resistance adjustment described in the first aspect, comprising: S1. The monitoring component monitors the pressure difference between the front and back sides of the overall filter material on the dust collector in real time; S2. The electronic control component receives the pressure difference value detected by the monitoring component and adjusts the expansion area of the filter material in the dust collector body and the contact angle with the airflow according to the change of the pressure difference value; S3. The monitoring component monitors the dust concentration and wind speed in real time, and transmits the monitored data to the electronic control component, which calculates the real-time dust holding capacity of the filter surface; S4. The electronic control component calculates the real-time expanded area of the filter material according to the workload of the reversing adjustment component, and calculates the maximum dust holding capacity of the current filter material based on the expanded area of the filter material. The real-time dust holding capacity is compared with the maximum dust holding capacity. When the real-time dust holding capacity is greater than or equal to the maximum dust holding capacity, the electronic control component controls the adjustment component to further adjust the expanded area of the filter material in the dust collector body and the contact angle with the airflow to maintain a constant resistance of the entire filter material. S5. The electronic control component establishes a dynamic relationship function based on the current pressure difference value and dust holding capacity of the filter material. When the value reaches a preset value, the reeling mechanism reels the filter material. During the reeling process, the unreeling mechanism is dragged to release new filter material.

[0014] In one embodiment of the present invention, the calculation of the real-time dust holding capacity of the filter material surface in S3 includes the following formula: ; Where C is the dust concentration, V is the air velocity, η is the collection efficiency of the filter material, and F is the filter area.

[0015] The above technical solution of the present invention has the following beneficial effects compared with the prior art: The present invention describes a dust collector with automatic adjustment of filtration resistance and a method for automatic adjustment of filtration resistance. A monitoring component can detect in real time the pressure difference between the front and back sides of the overall filter material on the dust collector. The electronic control component accurately adjusts the expanded area of the filter material in the dust collector body and the contact angle with the airflow according to the change in the pressure difference, thereby achieving precise adjustment of the filtration resistance, ensuring that the dust collector can automatically adjust the filtration resistance under different working conditions, maintain a stable filtration resistance, effectively avoid the problem of air volume reduction due to filter material blockage, and maintain the stability of the air volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0017] Figure 1 A front view of a dust collector with automatic adjustment of filtration resistance in a preferred embodiment of the present invention; Figure 2 for Figure 1 The internal structure diagram of the dust collector with automatic adjustment of filtration resistance shown; Explanation of the reference numerals in the accompanying drawings in the specification: 1. Dust collector body; 11. Air inlet surface; 12. Air outlet surface; 2. Unwinding mechanism; 3. Rewinding mechanism; 4. Filter material; 5. Adjustment component; 51. Reversing motor; 52. Transmission belt; 53. Movable roller; 6. Reversing fixed seat; 61. Base; 62. Reversing rod; 7. Pressure difference sensor; 8. Electronic control component; 9. Dust sensor; 10. Wind speed sensor; 13. Material changing motor; 14. Filter material guide bracket. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0019] Reference Figure 1 and 2 As shown, the present invention provides a dust collector with automatic adjustment of filtration resistance, comprising: The dust collector body 1 has an air inlet surface 11 and an air outlet surface 12; The filter assembly includes an unwinding mechanism 2, a rewinding mechanism 3, and filter material 4; the unwinding mechanism 2 and the rewinding mechanism 3 are respectively arranged at the two ends of the dust collector body 1, and the two ends of the filter material 4 can be retracted and wound around the rewinding mechanism 3 and the unwinding mechanism 2; An adjustment component 5 is provided on the inner side of the dust collector body 1 and is located between the unwinding mechanism 2 and the rewinding mechanism 3 for adjusting the expansion area of the filter material 4 in the dust collector body 1 and the contact angle with the airflow; A monitoring component is provided at the air inlet surface 11 of the dust collector body 1 and is used to monitor the pressure difference across the filter material 4 and obtain relevant environmental parameters; The electronic control component 8 includes a controller, which is electrically connected to the adjustment component 5 and the monitoring component, and is used to control the operation of the adjustment component 5 according to the numerical value obtained by the monitoring component, adjust the expansion area of the filter material 4 and the contact angle with the airflow, and realize the adjustment of the resistance of the filter material 4.

[0020] The adjustment assembly 5 includes a plurality of parallel reversing transmission units 51 and a reversing fixed seat 6. The reversing transmission unit includes a reversing motor 51, a transmission belt 52, and a movable roller 53. The transmission belt 52 is driven by the reversing motor 51. The movable roller 53 is arranged on the transmission belt 52. The reversing fixed seat 6 is arranged on the inner side of the dust collector body 1. The filter material 4 is wound around the movable roller 53 and the reversing fixed seat 6 in a Z-shape. The movable roller 53 is in close contact with the filter material 4 and can move left and right under the drive of the transmission belt. The adjustment assembly 5 can accurately adjust the expansion area and contact angle of the filter material 4, thereby improving the accuracy and flexibility of the filtration resistance adjustment and enhancing the adaptability of the dust collector to different working conditions.

[0021] In this embodiment, the reversing transmission units include two, and the reversing fixed seat 6 is arranged between the two reversing transmission units. The filter material 4 is released by the unwinding mechanism 2, passes through one of the reversing transmission units, and then is reversed by the reversing fixed seat 6 and then sent to the rewinding device 3 by the other reversing transmission unit. At this time, the filter material 4 is a structure with multiple V-shaped ends connected. When the movable roller 52 moves horizontally following the transmission belt 52, the path of the filter material 4 changes under the action of the movable roller 53. Specifically, when the movable roller 53 moves in a certain direction, the filter material 4 will be guided to deflect in the corresponding direction, so that the arrangement of the filter material 4 in the dust collector body changes, thereby realizing dynamic adjustment of the dust holding capacity. Compared with a single reversing transmission unit, the two reversing transmission units can adjust the contact angle between the filter material 4 and the airflow more, adjust the filter material 4 in two stages, and accurately control the resistance.

[0022] It should be noted that when the reversing motors 51 of the two reversing transmission units move at the same time, since the filter material 4 can only be unloaded from one end of the unwinding mechanism 2, it is easy to cause the filter material 4 to be over-tensioned. Therefore, the reversing motor 51 near the unwinding mechanism 2 will only start to move after the reversing motor 51 near the winding mechanism 3 completes its stroke from left to right.

[0023] Furthermore, the monitoring component includes a differential pressure sensor 7 and an environmental monitoring sensor. The differential pressure sensor 7 is used to monitor the differential pressure value on both sides of the filter material, and the environmental monitoring sensor is used to monitor environmental parameters related to the dust holding capacity and serve as a calibration for the differential pressure sensor 7. The environmental monitoring sensor is used to monitor environmental parameters related to the dust holding capacity and serve as a calibration for the differential pressure sensor 7. This helps to improve the accuracy of the detection data of the differential pressure sensor 7, further optimize the reliability of the dust holding capacity adjustment, enable the dust collector to respond to environmental changes more accurately, and improve overall performance.

[0024] Preferably, the environmental monitoring sensors include a dust sensor 9 and a wind speed sensor 10. The dust sensor 9 is used to monitor dust concentration, and the wind speed sensor 10 is used to monitor airflow velocity. Based on the dust concentration and airflow velocity, the real-time dust holding capacity of the filter material 4 surface can be calculated and compared with the maximum dust holding capacity. This avoids detection errors of the differential pressure sensor 7, serves as a verification and validation function, and further optimizes the expanded area and contact angle of the filter material 4, ensuring that the filter material 4 is always in optimal working condition.

[0025] Furthermore, a filter material guide bracket 14 is horizontally provided at the discharge end of the unwinding mechanism 2 and the feed end of the rewinding mechanism 3. The design of the filter material guide bracket 14 can effectively guide and support the discharge direction and recovery method of the filter material 4, ensuring that the filter material 4 remains stable and flat during the unwinding process, avoiding problems such as deviation and distortion of the filter material 4, thereby improving the unfolding quality of the filter material 4 and the dust removal effect.

[0026] The reversing fixed seat 6 includes a base 61 and a reversing rod 62 disposed on the base 61. The reversing rod 62 helps the filter material 4 smoothly transition from one side of the reversing transmission unit to the other, and to a certain extent ensures the stability and smoothness of the filter material 4 during the reversing process, providing stable and reliable reversing support for the filter material 4, ensuring that the filter material 4 will not be excessively bent or worn during the reversing process.

[0027] The unwinding mechanism 2 includes a first bracket and an unwinding shaft. The unwinding shaft is fixed to the dust collector body 1 through the first bracket and is used to unwind the filter material 4.

[0028] The reeling mechanism 3 includes a reeling motor 13, a second bracket, and a reeling shaft. The reeling shaft is mounted on the dust collector body 1 via the bracket and is used to reel in the filter material 4. The drive shaft of the reeling motor 13 is connected to the reeling shaft. The reeling motor 13 drives the reeling shaft to rotate, enabling timely and efficient reeling of the filter material 4. In conjunction with the unwinding mechanism 2 and the adjustment assembly 5, the tension and unrolling area of the filter material 4 can be dynamically adjusted, ensuring that the dust collector maintains optimal operating conditions under various operating conditions.

[0029] Based on the above structure, automatic adjustment of the filtration resistance is achieved through the organic combination of the dust collector body 1, the filter assembly, the adjustment assembly 5, the monitoring assembly and the electronic control assembly 8. The differential pressure sensor 7 detects the pressure difference between the front and back sides of the filter material 41 on the dust collector body 1 in real time; the controller receives the pressure difference value detected by the differential pressure sensor 7 and adjusts the expansion area of the filter material 4 in the dust collector body 1 and the contact angle with the airflow according to the change in the pressure difference value; the dust sensor 9 and the wind speed sensor 10 detect the dust concentration and wind speed in real time, and transmit the detected data to the controller, which calculates the real-time dust holding capacity of the surface of the filter material 4; the controller calculates the real-time length of the filter material 4 based on the workload of the adjustment assembly 5, and calculates the maximum dust holding capacity of the current filter material 4 based on the real-time length of the filter material 4, compares the real-time dust holding capacity with the maximum dust holding capacity, and when the real-time dust holding capacity is greater than the maximum dust holding capacity, the controller further adjusts the expansion area of the filter material 4 in the dust collector body 1 and the contact angle with the airflow to maintain the resistance of the entire filter material 4 constant.

[0030] In this embodiment, the resistance of the rated area of filter material 4 varies depending on the weight of the dust held on its surface. When the resistance becomes too great to be used, the rated area of filter material 4 corresponds to a maximum dust holding capacity. The real-time length of filter material 4 and the fixed width of the dust collector provide the real-time area of filter material 4, and the current maximum dust holding capacity of filter material 4 can be determined based on the real-time area of filter material 4. The controller calculates the real-time dust holding capacity of filter material 4 based on dust concentration and wind speed. When the real-time dust holding capacity exceeds the maximum dust holding capacity, the area of filter material 4 needs to be increased.

[0031] The present invention also provides a method for automatically adjusting the filtering resistance of a dust collector, the specific steps of which are as follows: S1: The monitoring component monitors the pressure difference between the front and back sides of the overall filter material 4 on the dust collector in real time; S2: The electronic control component 8 receives the pressure difference value detected by the monitoring component and adjusts the expansion area of the filter material 4 in the dust collector body 1 and the contact angle with the airflow according to the change of the pressure difference value; S3: The monitoring component monitors the dust concentration and wind speed in real time, and transmits the monitored data to the electronic control component 8, which calculates the real-time dust holding capacity of the filter material 4 surface; S4: The electronic control component 8 calculates the real-time expanded area of the filter material 4 according to the workload of the reversing adjustment component 5, and calculates the current maximum dust holding capacity of the filter material 4 based on the expanded area of the filter material 4, compares the real-time dust holding capacity with the maximum dust holding capacity, and when the real-time dust holding capacity is greater than or equal to the maximum dust holding capacity, the electronic control component 8 controls the adjustment component to further adjust the expanded area of the filter material 4 in the dust collector body 1 and the contact angle with the airflow to maintain the resistance of the entire filter material 4 constant; S5. The electronic control component 8 establishes a dynamic relationship function based on the current pressure difference value and dust holding capacity of the filter material 4. When the value reaches the preset value, the winding mechanism 3 winds up the filter material 4. During the winding process, the unwinding mechanism 2 is dragged to release new filter material 4.

[0032] The calculation of the real-time dust holding capacity of the surface of the filter material 4 in S3 includes the following formula:

[0033] Where C is the dust concentration, V is the air velocity, η is the collection efficiency of the filter material 4, and F is the filter area.

[0034] Based on the above-mentioned dust holding capacity adjustment method, through the orderly execution of each step, the dust holding capacity of the dust collector is accurately adjusted. The expansion area and tension of the filter material 4 can be automatically adjusted according to the data detected by the actual pressure difference sensor 7 and the environmental sensor, so that the dust collector can operate efficiently in environments with different dust concentrations, extend the service life of the filter material 4, reduce operating costs, and at the same time optimize the resistance characteristics of the dust collector and reduce fan energy consumption.

[0035] When there is a lot of dust adsorbed on the surface of the filter material 4, the difference detected by the pressure difference sensor 7 on both sides will increase. When it is detected that the pressure difference exceeds the set value, the controller drives the unwinding mechanism 2 and the winding mechanism 3 to drive the filter material to be replaced. When the pressure difference value is less than the set value, the unwinding mechanism 2 and the winding mechanism 3 stop working.

[0036] In actual applications, the filtration strategy can be manually adjusted according to the actual working conditions. For example, in dusty seasons, it can be set to high dust holding capacity mode, and in normal seasons, it can be set to low dust holding capacity mode.

[0037] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A dust collector with automatic adjustment of filtration resistance, characterized in that: include: A dust collector body, the dust collector body having an air inlet surface and an air outlet surface; The filter assembly includes an unwinding mechanism, a rewinding mechanism, and filter material. The unwinding mechanism and the rewinding mechanism are respectively provided at two ends of the dust collector body. The two ends of the filter material can be retracted and wound around the rewinding mechanism and the unwinding mechanism respectively. An adjustment component is provided on the inner side of the dust collector body and located between the unwinding mechanism and the rewinding mechanism, and is used to adjust the expansion area of the filter material in the dust collector body and the contact angle with the airflow; A monitoring component is provided on the air inlet side of the dust collector body, and is used to monitor the pressure difference between the two ends of the filter material and obtain relevant environmental parameters; The electronic control component includes a controller, which is electrically connected to the adjustment component and the monitoring component. The controller is used to control the operation of the adjustment component according to the numerical value obtained by the monitoring component, adjust the expansion area of the filter material and the contact angle with the airflow, and realize the adjustment of the filter material resistance.

2. A dust collector with automatic adjustment of filtration resistance according to claim 1, characterized in that: The adjustment assembly includes several parallel reversing transmission units and reversing fixed seats. The reversing transmission unit includes a reversing motor, a transmission belt and a movable roller. The transmission belt is driven by the reversing motor. The movable roller is arranged on the conveyor belt. The reversing fixed seat is arranged on the inner side of the dust collector body. The filter material is wrapped around the movable roller and the reversing fixed seat in a Z shape.

3. The dust collector with automatic adjustment of filtration resistance according to claim 1, characterized in that: The monitoring component includes a differential pressure sensor and an environmental monitoring sensor. The differential pressure sensor is used to monitor the differential pressure value on both sides of the filter material. The environmental monitoring sensor is used to monitor environmental parameters related to dust holding capacity and serves as a calibration for the differential pressure sensor.

4. A dust collector with automatic adjustment of filtration resistance according to claim 3, characterized in that: The environmental monitoring sensor includes a dust sensor and a wind speed sensor. The dust sensor is used to monitor dust concentration, and the wind speed sensor is used to monitor airflow speed.

5. The dust collector with automatic adjustment of filtration resistance according to claim 1, characterized in that: The discharging end of the unwinding mechanism and the feeding end of the rewinding mechanism are both horizontally provided with filter material guide brackets.

6. The dust collector with automatic adjustment of filtration resistance according to claim 2, characterized in that: The reversing fixing seat includes a base and a reversing rod arranged on the base.

7. The dust collector with automatic adjustment of filtration resistance according to claim 1, characterized in that: The unwinding mechanism includes a first bracket and an unwinding shaft. The unwinding shaft is fixed to the dust collector body through the first bracket and is used for unwinding the filter material.

8. The dust collector with automatic adjustment of filtration resistance according to claim 1, characterized in that: The winding mechanism includes a material changing motor, a second bracket and a winding shaft. The winding shaft is installed on the dust collector body through the bracket and is used to wind up the filter material. The driving shaft of the material changing motor is connected to the winding shaft.

9. A method for automatically adjusting the filtration resistance of a dust collector, applicable to the dust collector according to any one of claims 1 to 8, characterized in that: include: S1, differential pressure sensor monitors the differential pressure between the front and back sides of the filter media in the dust collector in real time; S2. The electronic control component receives the pressure difference value detected by the monitoring component and adjusts the expansion area of the filter material in the dust collector body and the contact angle with the airflow according to the change of the pressure difference value; S3, the dust sensor and wind speed sensor detect the dust concentration and wind speed in real time, and transmit the detected data to the electronic control component, which calculates the real-time dust holding capacity of the filter surface; S4. The electronic control component calculates the real-time expanded area of the filter material according to the workload of the reversing adjustment component, and calculates the maximum dust holding capacity of the current filter material based on the expanded area of the filter material. The real-time dust holding capacity is compared with the maximum dust holding capacity. When the real-time dust holding capacity is greater than or equal to the maximum dust holding capacity, the electronic control component controls the adjustment component to further adjust the expanded area of the filter material in the dust collector body and the contact angle with the airflow to maintain a constant resistance of the entire filter material. S5. The electronic control component establishes a dynamic relationship function based on the current pressure difference value and dust holding capacity of the filter material. When the value reaches a preset value, the reeling mechanism reels the filter material. During the reeling process, the unreeling mechanism is dragged to release new filter material.

10. The automatic adjustment method for filter resistance of a dust collector according to claim 9, characterized in that: The real-time dust holding capacity of the filter material surface calculated in S3 includes the following formula: ； Where C is the dust concentration, V is the air velocity, η is the collection efficiency of the filter material, and F is the filter area.

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