Activated carbon waste gas filtering device with self-cleaning function

Abstract

The utility model provides a kind of active carbon waste gas filtering device with self-cleaning function belongs to waste gas treatment technical field.The device includes shell, air inlet pipe, air outlet pipe and internal core component-rotatable cylindrical active carbon filtering unit.The unit is divided into multiple independent sector adsorption bin along circumference direction.Shell inner portion is upper adsorption cavity and lower cleaning cavity.Filtering unit is supported in shell by two end bearing block, its hollow rotating shaft has transmission and air outlet, when working, waste gas is in work position in adsorption cavity penetration adsorption bin and complete purification, clean gas is collected and exported by hollow rotating shaft.After adsorption saturation, driving mechanism drives filtering unit intermittent rotation, so that saturated bin is rotated into cleaning cavity, receives ultrasonic wave and water spray combined cleaning.The utility model realizes the automation continuous operation of active carbon filtering, on-line cleaning, regeneration drying, solves the problem that traditional equipment needs to stop and replace active carbon, especially suitable for small and medium wind volume waste gas treatment scene.

Description

Technical Field

[0001] This utility model relates to the technical field of cup testing equipment, specifically to an activated carbon exhaust gas filtration device with self-cleaning function. Background Technology

[0002] Activated carbon adsorption devices are one of the mainstream equipment for treating volatile organic compounds (VOCs) in waste gas. They utilize the large specific surface area and abundant microporous structure of activated carbon to adsorb harmful substances in the waste gas. However, traditional activated carbon filters have a significant drawback: once the activated carbon becomes saturated, it loses its purification capacity, requiring shutdown and replacement with brand new or regenerated activated carbon. This process not only increases production costs and makes operation cumbersome, but the replaced waste activated carbon is also hazardous waste, and improper disposal can cause secondary pollution.

[0003] Currently, although online regeneration technologies such as thermal nitrogen desorption and steam desorption exist, these systems are complex and energy-intensive, mainly applicable to large, stationary equipment. They are less economical and suitable for small to medium-sized waste gas treatment scenarios or for filtration equipment requiring mobility. Therefore, there is an urgent need for a waste gas filtration device that is simple in structure, low in cost, and capable of self-cleaning and regenerating activated carbon. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides an activated carbon exhaust gas filtration device with self-cleaning function, which has the characteristics of ingenious structure, no need for frequent replacement of activated carbon, and automatic online cleaning and regeneration.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An activated carbon exhaust gas filtration device with self-cleaning function includes a shell, an inlet pipe, an outlet pipe, and an activated carbon filtration unit. The shell is internally divided into an adsorption chamber and a cleaning chamber arranged vertically. The activated carbon filtration unit adopts a rotatable cylindrical structure with a rotating shaft at its center, which is mounted in the shell through a bearing seat and seals the adsorption chamber and the cleaning chamber. The rotating shaft is a hollow shaft with multiple through holes distributed on its outer surface. One end of the outlet pipe is connected to the rotating shaft.

[0007] The activated carbon filter unit is divided into multiple independent fan-shaped adsorption chambers along the circumferential direction; the adsorption chamber corresponds to the upper part of the activated carbon filter unit, and its side wall is connected to the air inlet pipe; the cleaning chamber corresponds to the lower part of the activated carbon filter unit, and its bottom is provided with a drain pipe; the housing is provided with a drive motor that drives the rotating shaft to rotate intermittently; the cleaning chamber is provided with an ultrasonic generator array and a spray pipe, the spray pipe is connected to a clean water pipe, and the drain pipe is provided with a drain valve.

[0008] Furthermore, the ultrasonic generator array is arranged on the sidewalls and bottom of the cleaning chamber, and the ultrasonic frequency range emitted by it is 20kHz-40kHz.

[0009] Furthermore, the spray pipe is located below the activated carbon filter unit, with its nozzle facing the activated carbon filter unit.

[0010] Furthermore, a pressure sensor is also provided at the top of the adsorption chamber to monitor pressure changes within the adsorption chamber in order to determine whether the activated carbon is saturated.

[0011] Furthermore, the outlet pipe is connected to a vacuum pump.

[0012] Furthermore, it also includes a PLC controller, and the drive motor, ultrasonic generator, vacuum pump, and drain valve are all electrically connected to the PLC controller; the signal output terminal of the pressure sensor is connected to the signal input terminal of the PLC controller.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0014] 1. Achieves uninterrupted online operation: Through a unique rotary compartment design, adsorption and regeneration functions are spatially separated but temporally continuous. The cleaning and regeneration process of the saturated compartment is synchronized with the adsorption process of the other compartments, completely avoiding the drawback of traditional equipment requiring shutdown to replace activated carbon, and greatly improving equipment utilization and processing efficiency.

[0015] 2. Highly efficient and thorough cleaning and regeneration with a high recovery rate: The cleaning method combines "ultrasonic cavitation effect" with "water spray rinsing". The powerful microscopic impact force generated by the ultrasonic waves can penetrate deep into the micropores of activated carbon, effectively shaking off difficult-to-treat pollutants. This solves the problem of incomplete regeneration in traditional methods, enabling the activated carbon adsorption performance to be efficiently restored and extending its service life.

[0016] 3. Fast drying speed and low energy consumption: An innovative method utilizes a vacuum pump to create negative pressure in the cleaning chamber, lowering the boiling point of water under low pressure, thereby achieving low-temperature boiling evaporation of moisture within the pores of activated carbon. Compared to traditional hot air drying, this method is faster, significantly reduces energy consumption, and avoids potential damage to the activated carbon structure caused by high temperatures.

[0017] 4. High degree of automation and intelligence: The entire system is automatically controlled by a PLC controller, which can automatically determine the cleaning time based on the pressure difference in the adsorption chamber or a preset program, and accurately execute the entire process of chamber rotation, cleaning, drying, and drainage. This significantly reduces manual operation and maintenance intensity, and lowers operating costs.

[0018] 5. Compact structure and wide applicability: The overall design highly integrates functions such as drive, filtration, gas discharge, and vacuuming, resulting in a compact and reasonable structure. Its operating cost is far lower than that of complex steam or hot nitrogen regeneration systems, making it particularly suitable for small to medium volume exhaust gas treatment scenarios where investment and operating costs are sensitive, and its application prospects are broad. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention from one perspective;

[0020] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0021] Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0022] Markings and component names in the diagram:

[0023] 1-Shell, 2-Inlet pipe, 3-Outlet pipe, 4-Activated carbon filter unit, 5-Adsorption chamber, 6-Cleaning chamber, 7-Rotating shaft, 8-Fan-shaped adsorption chamber, 9-Drain pipe, 10-Drive motor, 12-Ultrasonic generator, 13-Spray pipe, 14-Clean water pipe, 15-Vacuum pump. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings.

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0026] This embodiment provides an activated carbon waste gas filtration device with self-cleaning function, such as... Figures 1-3 As shown, the device includes a housing 1, an inlet pipe 2, an outlet pipe 3, and an activated carbon filter unit 4. The housing 1 is internally divided into an adsorption chamber 5 and a cleaning chamber 6 arranged vertically. The activated carbon filter unit 4 adopts a rotatable cylindrical structure with a rotating shaft 7 at its center. It is mounted inside the housing 1 through a bearing seat and seals the adsorption chamber 5 and the cleaning chamber 6. The rotating shaft 7 is a hollow shaft with multiple through holes distributed on its outer surface. One end of the outlet pipe 3 is connected to the rotating shaft 7.

[0027] The activated carbon filter unit 4 is divided into multiple independent fan-shaped adsorption chambers 8 along the circumferential direction; the adsorption chamber 5 corresponds to the upper part of the activated carbon filter unit 4, and its side wall is connected to the air inlet pipe 2; the cleaning chamber 6 corresponds to the lower part of the activated carbon filter unit 4, and its bottom is provided with a drain pipe 9; the housing 1 is provided with a drive motor 10 that drives the rotating shaft 7 to rotate intermittently; the cleaning chamber 6 is provided with an ultrasonic generator array and a spray pipe 13, the spray 13 is connected to a clean water pipe 14, and a drain valve is provided on the drain pipe 9.

[0028] In actual operation, the exhaust gas enters the adsorption chamber 5 from the inlet pipe 2, then enters the activated carbon filter unit 4 for filtration, and the clean gas enters the rotating shaft 7 and then comes out from the outlet pipe 3.

[0029] When the upper part of the activated carbon filter unit 4 needs to be cleaned, the drive motor 10 rotates, causing the upper part of the activated carbon filter unit 4 to enter the cleaning chamber 6. Clean water is used to rinse the activated carbon filter unit 4 through the clean water pipe 14 and the spray pipe 13. When the water covers the activated carbon filter unit 4, the ultrasonic generator 12 works to further clean the activated carbon filter unit 4. After cleaning, the sewage is discharged from the drain pipe 9 at the bottom, and then the activated carbon filter unit becomes dry under the action of the vacuum pump 15.

[0030] Furthermore, the ultrasonic generator array is arranged on the side walls and bottom of the cleaning chamber, emitting ultrasonic waves with a frequency range of 20kHz-40kHz. This multi-directional array arrangement ensures that the ultrasonic energy is evenly distributed throughout the submerged chamber, eliminating any blind spots in the cleaning process.

[0031] Furthermore, the spray pipe 13 is located below the activated carbon filter unit 4, with its nozzle facing the activated carbon filter unit.

[0032] Furthermore, a pressure sensor is also provided at the top of the adsorption chamber 5 to monitor pressure changes within the adsorption chamber to determine whether the activated carbon is saturated. Accurately determining the saturation state of the activated carbon by monitoring the increase in pressure (or pressure difference) within the adsorption chamber is more scientific and efficient than traditional timed control, avoiding waste of energy and resources and ensuring that adsorption efficiency is always maintained at the optimal level.

[0033] Furthermore, the exhaust pipe 3 is connected to a vacuum pump 15. The vacuum pump evacuates the cleaning chamber 6, significantly lowering the boiling point of water and causing it to evaporate rapidly at low temperatures, greatly shortening the drying time. Simultaneously, it removes aerosols and VOC vapors generated during the cleaning process, preventing secondary pollution.

[0034] Furthermore, it also includes a PLC controller. The drive motor 10, ultrasonic generator 12, vacuum pump 15, and drain valve are all electrically connected to the PLC controller; the signal output terminal of the pressure sensor is connected to the signal input terminal of the PLC controller. The PLC integrates the various dispersed functional modules (rotation, cleaning, drying, drainage, and monitoring) into an organic collaborative system, automatically completing all operations according to preset logic or sensor feedback, realizing unattended operation, greatly reducing operating and maintenance costs, and improving equipment reliability.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An activated carbon waste gas filtration device with self-cleaning function, characterized in that, The device includes a housing, an inlet pipe, an outlet pipe, and an activated carbon filter unit. The housing is internally divided into an adsorption chamber and a cleaning chamber arranged vertically. The activated carbon filter unit adopts a rotatable cylindrical structure with a rotating shaft at its center. It is mounted inside the housing via a bearing seat and seals the adsorption chamber and the cleaning chamber. The rotating shaft is a hollow shaft with multiple through holes distributed on its outer surface. One end of the outlet pipe is connected to the rotating shaft. The activated carbon filter unit is divided into multiple independent fan-shaped adsorption chambers along the circumferential direction; the adsorption chamber corresponds to the upper part of the activated carbon filter unit, and its sidewall is connected to the air inlet pipe. The cleaning chamber corresponds to the lower half of the activated carbon filter unit, and a drain pipe is provided at its bottom; the housing is provided with a drive motor that drives the rotating shaft to rotate intermittently; the cleaning chamber is provided with an ultrasonic generator array and a spray pipe, the spray pipe is connected to a clean water pipe, and a drain valve is provided on the drain pipe.

2. The activated carbon waste gas filtration device with self-cleaning function according to claim 1, characterized in that, The ultrasonic generator array is arranged on the side walls and bottom of the cleaning chamber, and the ultrasonic frequency range it emits is 20kHz-40kHz.

3. The activated carbon waste gas filtration device with self-cleaning function according to claim 2, characterized in that, The spray pipe is located below the activated carbon filter unit, with its nozzle facing the activated carbon filter unit.

4. The activated carbon waste gas filtration device with self-cleaning function according to claim 3, characterized in that, A pressure sensor is also provided at the top of the adsorption chamber to monitor pressure changes within the chamber and determine whether the activated carbon is saturated.

5. The activated carbon waste gas filtration device with self-cleaning function according to claim 4, characterized in that, The exhaust pipe is connected to a vacuum pump.

6. The activated carbon waste gas filtration device with self-cleaning function according to claim 5, characterized in that, It also includes a PLC controller, and the drive motor, ultrasonic generator, vacuum pump, and drain valve are all electrically connected to the PLC controller; the signal output terminal of the pressure sensor is connected to the signal input terminal of the PLC controller.

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