Multistage purification dust remover

Abstract

The invention discloses a multi-stage purification dust remover, and aims to provide an efficient and automatic air purification scheme. The dust remover mainly comprises a rack, an Arduino single chip microcomputer, an infrared sensor, a wireless communication module, a motor, a purification chamber, a pre-filtering net, a secondary filtering net, a precise filtering net, a multi-stage filtering net frame, a rotary compression device, an airflow adjusting device, a dust collecting body, a dust collecting pipe, an air inlet connecting pipe, an industrial fan, an upper box body, a middle box body, a crawling ladder, a guardrail, a fan transmission belt and the like. According to the dust remover, the industrial fan is driven by the motor to generate enough suction force, so that air enters the airflow adjusting device, particulate matters with different sizes are gradually removed through the multi-stage filtering system, and finally clean air is output. In addition, through an integrated control system and a remote monitoring technology, automatic management and maintenance of the equipment are realized, and user experience is improved.

Description

Technical Field

[0001] The invention belongs to the field of environmental protection equipment, and in particular relates to a multi-stage purification dust collector. Background Art

[0002] Environmental protection requires dust removal from the flue gas generated during the production process. The equipment that separates dust from the flue gas is called a dust collector. The dust collectors used in the existing environmental protection industry usually include a vertically arranged ash collecting cone and an air inlet pipe connected to it. The bottom of the ash collecting cone is equipped with a hand-pull gate valve for discharging the collected dust. However, this direct open discharge method of the hand-pull gate valve is prone to dust problems, resulting in secondary environmental pollution. At the same time, dust is scattered on the ground, causing environmental pollution, and a lot of manpower is required to clean up the dust on site, thereby increasing the production pressure of the enterprise. In addition, if dust enters the lubricating rotating parts of the dust collector, it will also cause damage to the equipment.

[0003] Although there are improved solutions in the prior art, such as a dust collector disclosed in Chinese patent document CN204193699U, which has a high dust removal efficiency and a convenient filter cartridge disassembly and assembly design, its dust collection drawer is small and it is difficult to cope with application scenarios with large amounts of dust, such as woodworking engraving and polishing processes. These technical solutions have improved some of the problems of the dust collector to a certain extent, but there are still defects such as low smoke collection efficiency and poor dust removal effect. There is also an electrostatic precipitator (application number: 201521139689.2), which uses multiple anode plates and cathode wires to form an electric field to improve the dust removal efficiency, but its smoke collection efficiency is still not ideal. Therefore, the prior art urgently needs a new type of multi-stage purification dust collector to solve these shortcomings and significantly improve the dust removal efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-stage purification dust collector, which aims to solve the problems of dust, dust scattering, equipment damage and low dust removal efficiency in the prior art. Specifically, it improves the dust removal efficiency and ensures that it can work efficiently in various industrial application scenarios. It also realizes the self-cleaning function, reduces the need for manual maintenance and cleaning, avoids secondary pollution, and reduces the impact on the environment.

[0005] To achieve the above object, the present invention proposes the following technical solutions: A multi-stage purification dust collector includes a frame, an Arduino single-chip computer, an infrared sensor, a wireless communication module, a motor, a purification chamber, a pre-filter, a secondary filter, a precision filter, a multi-stage filter frame, a rotary compression device, an air flow adjustment device, a dust collecting body, a dust collecting pipe, an air inlet pipe, an industrial fan, an upper box, a middle box, a ladder, a guardrail, and a fan drive belt as components.

[0006] The front end of the dust collector is provided with an air intake system, which includes an air intake pipe, an industrial fan, a fan drive belt and a motor. Furthermore, the dust collector is driven by a motor, which serves as a power source for the entire dust collector and is used to drive the entire system. The motor directly provides power to the fan so that the blades in the fan can rotate, thereby generating the required airflow.

[0007] Furthermore, the fan conveyor belt connects the motor and the industrial fan to transmit the power generated by the motor to the fan. Through the tension and transmission of the conveyor belt, it is ensured that the power of the motor is smoothly and efficiently transmitted to the industrial fan. The industrial fan is a fan device including blades, which is driven to rotate by the motor. The rotation of the blades generates a strong airflow to promote air flow. The dust collector generates sufficient suction through the rotation of the blades, so that the air inlet pipe can effectively inhale the turbid air in the environment.

[0008] Preferably, the air intake system realizes efficient power transmission, and realizes power transmission between the motor and the industrial fan through the fan conveyor belt, ensuring the effective use of power. The whole system is compactly designed, and achieves good air treatment effect through reasonable layout and efficient power transmission mechanism.

[0009] After the turbid air enters the air inlet pipe, it is driven by the industrial fan to enter the airflow adjustment device and then flows to the dust collecting pipe. The airflow adjustment device is used to adjust the direction and speed of the airflow to ensure that the airflow flows smoothly and evenly to the dust collecting pipe. Furthermore, the airflow adjustment device is configured as an arc-shaped folded elbow, which can optimize the airflow and reduce turbulence and dead corners.

[0010] Preferably, further, the dust collecting pipe is configured as a frame pipe with a small inlet and a large outlet. The regulated airflow enters the dust collecting pipe and is designed to increase the airflow velocity through the small inlet and the large outlet, which is beneficial to the separation and collection of particles.

[0011] The dust collecting pipe is connected to the upper box of the purification chamber to ensure that the air can smoothly enter the purification chamber for the next step of filtering. Furthermore, 49 circular frames are evenly arranged on the lower bottom surface of the upper box, and the frames are used to assemble the multi-stage filter screen to ensure that the multi-stage filter screen can be firmly installed in the upper box and together with the middle box form a complete purification chamber.

[0012] Preferably, the purification chamber is composed of an upper box body, a middle box body, and a multi-stage filter screen, forming a closed purification chamber, thereby ensuring that the air is not disturbed by the outside world when passing through the multi-stage filter screen.

[0013] For the multi-stage purification function design of the multi-stage purification dust collector, a multi-stage filter is arranged inside the purification chamber of the dust collector, including a pre-filter for the first stage of filtration to capture large particles, a secondary filter for further filtering medium-sized particles, a final layer of precision filter for filtering and capturing tiny particles, and a filter bracket for fixing the filter structure of each layer.

[0014] Preferably, the pre-filter includes a top connection column that cooperates with the filter bracket, and a cylindrical filter is arranged below the connection column, and square holes are evenly arranged. The filter is a coarse steel wire filter material, which is easy to clean and replace. The pre-filter is located at the air inlet of the purification room, and serves as a device for the first smoke purification process to intercept larger particulate matter entering the purification system.

[0015] The secondary filter is arranged at the center of the filter support, next to the pre-filter, to further purify the air. After the air is discharged from the pre-filter, it enters the secondary filter to filter medium-sized particles and improve the air cleanliness.

[0016] Preferably, the secondary filter screen is spread around a central filter element to form an integral filter unit. Folding surfaces are evenly arranged around the filter element, which increases the filter area and ensures that the air contacts more filter materials when passing through, so that the filter efficiency per unit volume is higher.

[0017] Furthermore, the secondary filter is made of polyester fiber, which is not only low in cost, but also can be washed many times, has strong moisture resistance, and is suitable for capturing medium-sized particles.

[0018] Preferably, the precision filter adopts a diamond-shaped cylindrical structure. This design can increase the filtering area and provide better airflow distribution. It is located at the bottom of the filter bracket and installed after the secondary filter as the last barrier in the entire filtration system. It adopts HEPA standard high-performance filter material to ensure that most of the tiny particles can be filtered out and achieve extremely high filtration efficiency.

[0019] Furthermore, when the air passes through the pre-filter and the secondary filter, most of the large and medium-sized particles have been removed. Next, the air will pass through the precision filter, at which time the particles in the air are mainly very fine particles, such as PM2.5, bacteria, etc. The precision filter can effectively capture these tiny particles through its high-density filter material and large filter area design, ensuring that the output air is cleaner.

[0020] Preferably, the design of the multi-stage purification dust collector takes advantage of different filtration levels, filtering particulate matter in the air from coarse to fine. By selecting appropriate materials and structural design, it is ensured that each level of filter can perform at its best, and the final output air quality is effectively improved compared to before purification.

[0021] Furthermore, after being purified by the purification chamber, the air enters the conical dust collector, and an Arduino single-chip microcomputer, an infrared sensor, a wireless communication module, a rotary compression device and an exhaust port are arranged inside the conical dust collector. The shape of the conical dust collector helps to concentrate and collect dust generated during the purification process.

[0022] Preferably, the Arduino microcontroller controls the entire working process of the cone-shaped dust collector, including monitoring the dust amount and controlling the operation of the rotary compression device. The infrared sensor monitors the dust accumulation inside the cone-shaped dust collector, and sends a signal to the Arduino microcontroller when the dust reaches a certain level.

[0023] The wireless communication module is used for remote monitoring and data transmission, and can send the status information of the cone dust collector to the remote monitoring system. It is installed in the cone dust collector and connected to the Arduino single chip microcomputer.

[0024] The rotary compression device is used to compress the collected dust, reduce the dust volume, and facilitate cleaning. It is installed at the bottom of the conical dust collecting body. The air outlet is set on the side of the conical dust collecting body, and the purified air is discharged into the environment through the air outlet, ensuring that the purified air can be discharged smoothly.

[0025] Through the above technical scheme, the working process of the multi-stage purification dust collector of the present invention is as follows. Turbid air is sucked into the dust collector through the air inlet pipe, and the motor drives the industrial fan through the fan conveyor belt to generate sufficient suction to allow the air to enter the airflow adjustment device. The airflow adjustment device adjusts the direction and speed of the airflow to make it more suitable for further filtering treatment. The regulated airflow enters the upper box of the purification room through the dust collecting pipe, and the air passes through the multi-stage filter screen in the upper box to gradually remove particles of different sizes. The purification room composed of the upper box and the middle box ensures that the air is effectively purified throughout the process. The air after multi-stage filtration enters the conical dust collecting body, and the infrared sensor monitors the accumulation of dust inside the conical dust collecting body. When the dust accumulates to a certain extent, the Arduino single chip microcomputer controls the rotary compression device to start and compress the collected dust. The wireless communication module sends the status information of the conical dust collecting body to the remote monitoring system. Finally, the purified air is discharged into the environment through the air outlet. This process ensures the efficient purification of air in the dust collector, and improves the operating efficiency and management convenience of the equipment through automatic control and remote monitoring technology.

[0026] The above technical solution can achieve the following beneficial effects: Compared with the prior art, the present invention has the following advantages and positive effects: (1) The multi-stage purification dust collector provided by the present invention filters the particles in the air gradually from coarse to fine through the design of a multi-stage filtration system, ensuring that particles of corresponding sizes can be removed when the air passes through each stage of the filter, thereby greatly improving the quality of the final output air.

[0027] (2) The multi-stage purification dust collector provided by the present invention is equipped with an Arduino single-chip microcomputer and an integrated infrared sensor, so that the device can automatically monitor dust accumulation and control the operation of the rotary compression device, thereby realizing automatic management of the equipment and reducing the need for manual intervention.

[0028] (3) The present invention uses a wireless communication module to enable remote monitoring and obtain information on the operating status of the equipment in real time.

[0029] (4) The conical dust collecting body adopted in the present invention not only helps to concentrate and collect dust, but also has a compact structure, saves space, and is convenient for the installation and layout of the equipment. At the same time, the volume occupied by dust is reduced by the rotary compression device, which is convenient for cleaning.

[0030] (5) The multi-stage purification dust collector provided by the present invention is easy to operate. It simplifies the user's operation process through automatic control and remote monitoring technology, improves the user experience, and makes the daily management and maintenance of the equipment more convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of the multi-stage purification dust collector provided by the present invention.

[0033] Figure 2 It is a diagram illustrating the composition of the air intake system adopted in the present invention.

[0034] Figure 3 It is a schematic diagram of the structure of the conical ash collecting body adopted in the present invention.

[0035] Figure 4 It is a front view of the multi-stage purification dust collector provided by the present invention.

[0036] Figure 5 It is a diagram illustrating the structure of the pre-filter adopted in the present invention.

[0037] Figure 6 It is a three-dimensional structural diagram of the secondary filter screen adopted by the present invention.

[0038] Figure 7 It is a three-dimensional structural diagram of the precision filter screen used in the present invention.

[0039] Figure 8 It is a three-dimensional structural diagram of the multi-stage filter provided by the present invention.

[0040] Fig. 9 It is a three-dimensional structural diagram of the wireless communication module adopted by the present invention.

[0041] Fig.10 It is a three-dimensional structural diagram of the Arduino single-chip microcomputer adopted by the present invention.

[0042] In the figure: (1) rack, (2) Arduino microcontroller, (3) infrared sensor, (4) wireless communication module, (5) motor, (6) purification chamber, (7) pre-filter, (8) secondary filter, (9) precision filter, (10) multi-stage filter frame, (11) rotary compression device, (12) air flow adjustment device, (13) dust collector, (14) dust collection pipe, (15) air inlet pipe, (16) industrial fan, (17) upper box, (18) middle box, (19) ladder, (20) guardrail, (21) fan drive belt. DETAILED DESCRIPTION

[0043] The present invention is further explained below with reference to the accompanying drawings and specific embodiments.

[0044] The embodiment of the present invention relates to a multi-stage dust collector, such as Figure 1 and Figure 4 As shown, the dust collector mainly includes the following components: a frame 1, an Arduino single-chip computer 2, an infrared sensor 3, a wireless communication module 4, a motor 5, a purification chamber 6, a pre-filter 7, a secondary filter 8, a precision filter 9, a multi-stage filter frame 10, a rotary compression device 11, an air flow adjustment device 12, a dust collecting body 13, a dust collecting pipe 14, an air inlet pipe 15, an industrial fan 16, an upper box 17, a middle box 18, a ladder 19, a guardrail 20, and a fan drive belt 21.

[0045] Furthermore, an air intake system is provided at the front end of the dust collector, and the air intake system includes an air intake pipe 15, an industrial fan 16, a fan drive belt 21 and a motor 5. Furthermore, the dust collector is driven by the motor 5, which serves as a power source for the entire dust collector and is used to drive the operation of the entire system. It directly provides power to the fan so that the blades in the fan can rotate, thereby generating the required airflow.

[0046] Furthermore, the fan conveyor belt 21 connects the motor 5 and the industrial fan 16 to transmit the power generated by the motor to the fan. Through the tension and transmission of the conveyor belt, it is ensured that the power of the motor is smoothly and efficiently transmitted to the industrial fan 16. The industrial fan 16 is a fan device including blades, which is driven to rotate by the motor 5. The rotation of the blades generates a strong airflow to promote air flow. The dust collector generates sufficient suction through the rotation of the blades, so that the air inlet pipe 15 can effectively inhale the turbid air in the environment.

[0047] The air inlet pipe 15 is connected to an industrial fan 16 , and the industrial fan 16 is driven by a motor 5 to generate sufficient suction force to promote air flow.

[0048] Further, the airflow regulating device 12 adjusts the direction and speed of the airflow to ensure that the airflow flows smoothly and evenly to the dust collecting pipe 14. Further, the airflow regulating device 12 is configured as an arc-shaped folded elbow, which can optimize the airflow and reduce turbulence and dead angles.

[0049] Furthermore, the dust collecting pipe 14 is configured as a frame pipe with a small inlet and a large outlet. The regulated airflow enters the dust collecting pipe 14, and through the design of a small inlet and a large outlet, the airflow velocity is increased, which is beneficial to the separation and collection of particles.

[0050] The dust collecting pipe 14 is connected to the upper box 17 of the purification chamber 6 to ensure that the air smoothly enters the purification chamber for the next filtering process. Furthermore, 49 circular frames 10 are evenly arranged on the lower bottom surface of the upper box 17, and the frames are used to assemble the multi-stage filter screen to ensure that the multi-stage filter screen can be firmly installed in the upper box 17 and together with the middle box 18 form a complete purification chamber.

[0051] The purification chamber is composed of an upper box body 17, a middle box body 18, and a multi-stage filter screen, forming a closed purification chamber to ensure that the air is not disturbed by the outside world during the process of passing through the multi-stage filter screen.

[0052] For the multi-stage purification function design of the multi-stage purification dust collector, a multi-stage filter is arranged inside the purification chamber of the dust collector, including a pre-filter 7 for filtering and capturing large particles in the first stage, a secondary filter 8 for further filtering medium-sized particles, a final layer of precision filter 9 for filtering and capturing tiny particles, and a filter bracket 10 for fixing each layer of the filter structure.

[0053] Furthermore, the pre-filter 7 is located at the air inlet of the purification chamber, and is used to preliminarily remove larger particles; the pre-filter 7 includes a top connection column that cooperates with the filter bracket, and a cylindrical filter is arranged below the connection column, and square holes are evenly arranged. The filter is a coarse steel wire filter material, which is easy to clean and replace. The pre-filter 7 is a device for the first smoke purification process, intercepting larger particles entering the purification system.

[0054] Furthermore, the secondary filter 8 is arranged at the center of the filter support, immediately after the pre-filter 7, to further purify the air. After the air is discharged from the pre-filter 7, it enters the secondary filter 8 to filter medium-sized particles and improve the cleanliness of the air.

[0055] Furthermore, the secondary filter 8 is spread around a central filter element to form an integral filter unit. Folding surfaces are evenly arranged around the filter element, which increases the filter area and ensures that the air contacts more filter materials when passing through, so that the filter efficiency per unit volume is higher.

[0056] Furthermore, the secondary filter 8 is made of polyester fiber, which is not only low in cost, but also can be washed multiple times, has strong moisture resistance, and is suitable for capturing medium-sized particles.

[0057] Furthermore, the precision filter 9 adopts a diamond-shaped cylindrical structure, which can increase the filtering area and provide better airflow distribution. It is located at the bottom of the filter bracket and installed after the secondary filter 8 as the last barrier in the entire filtering system. It adopts HEPA standard high-performance filter material to ensure that most of the tiny particles can be filtered out and achieve extremely high filtering efficiency.

[0058] Furthermore, after the air passes through the pre-filter 7 and the secondary filter 8, most of the large and medium-sized particles have been removed. Next, the air will pass through the precision filter 9, at which time the particles in the air are mainly very fine particles, such as PM2.5, bacteria, etc. The precision filter 9 can effectively capture these tiny particles through its high-density filter material and large filter area design, ensuring that the output air is cleaner.

[0059] Furthermore, the design of the multi-stage purification dust collector takes advantage of different filtration levels, filtering particulate matter in the air from coarse to fine. By selecting appropriate materials and structural design, it is ensured that each level of filter can perform at its best, and the final output air quality is effectively improved compared to before purification.

[0060] Furthermore, after being purified by the purification chamber, the air enters the conical dust collecting body 13, and the conical dust collecting body is provided with an Arduino single chip computer 2, an infrared sensor 3, a wireless communication module 4, a rotary compression device 11 and an exhaust port. The shape of the conical dust collecting body 13 helps to concentrate and collect the dust generated during the purification process.

[0061] Furthermore, the Arduino microcontroller 2 controls the entire working process of the cone dust collector, including monitoring the dust amount and controlling the operation of the rotary compression device 11. The infrared sensor 3 monitors the dust accumulation inside the cone dust collector and sends a signal to the Arduino microcontroller 2 when the dust reaches a certain level.

[0062] Furthermore, the wireless communication module 4 is used for remote monitoring and data transmission, and can send the status information of the cone dust collecting body to the remote monitoring system. It is installed in the cone dust collecting body 13 and connected to the Arduino single chip computer 2.

[0063] Furthermore, the rotary compression device 11 is used to compress the collected dust, reduce the dust volume, and facilitate cleaning. It is installed at the bottom of the conical dust collecting body 13. The air outlet is set on the side of the conical dust collecting body 13, and the purified air is discharged into the environment through the air outlet, ensuring that the purified air can be discharged smoothly.

[0064] The working process of the multi-stage purification dust collector is as follows. Turbid air is sucked into the dust collector through the air inlet pipe 15, and the motor 5 drives the industrial fan 16 through the fan conveyor belt 21 to generate sufficient suction to allow the air to enter the airflow adjustment device 12. The airflow adjustment device 12 adjusts the direction and speed of the airflow to make it more suitable for further filtering. The regulated airflow enters the upper box 17 of the purification room through the dust collecting pipe 14, and the air passes through the multi-stage filter screen in the upper box to gradually remove particles of different sizes. The purification room composed of the upper box 17 and the middle box 18 ensures that the air is effectively purified throughout the process. The air after multi-stage filtration enters the conical dust collecting body 13, and the infrared sensor 3 monitors the accumulation of dust inside the conical dust collecting body. When the dust accumulates to a certain extent, the Arduino single chip computer 2 controls the rotary compression device 11 to start and compress the collected dust. The wireless communication module 4 sends the status information of the conical dust collecting body to the remote monitoring system. Finally, the purified air is discharged into the environment through the air outlet. This process ensures efficient purification of air in the dust collector and improves the operating efficiency and management convenience of the equipment through automated control and remote monitoring technology.

[0065] Furthermore, the conical dust collecting body 13 not only helps to concentrate and collect dust, but also has a compact structure, saves space, and facilitates the installation and arrangement of equipment. At the same time, the volume occupied by dust is reduced by the rotating compression device 11, which is convenient for cleaning.

[0066] Furthermore, the multi-stage purification dust collector provided by the present invention is easy to operate, simplifies the user's operating process through automatic control and remote monitoring technology, improves the user experience, and makes the daily management and maintenance of the equipment more convenient and efficient.

[0067] The above-mentioned configuration can also be set in other embodiments, and the scope of protection of the present invention includes but is not limited to the situations listed in this embodiment. Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so the scope of protection of the present invention shall be subject to the scope defined by the claims.

[0068] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The present invention provides a multi-stage purification dust collector, characterized in that: The dust collector includes a frame, an Arduino single-chip computer, an infrared sensor, a wireless communication module, a motor, a purification chamber, a pre-filter, a secondary filter, a precision filter, a multi-stage filter frame, a rotary compression device, an air flow adjustment device, a dust collecting body, a dust collecting pipe, an air inlet pipe, an industrial fan, an upper box, a middle box, a ladder, a guardrail, and a fan drive belt as components.

2. A multi-stage dust collector according to claim 1, characterized in that: The pre-filter is located at the air inlet of the purification chamber and is used to initially remove larger particles. The secondary filter is arranged at the center of the filter support and is used to filter medium-sized particles to improve air cleanliness.

3. A multi-stage dust collector according to claim 2, characterized in that: The secondary filter is made of polyester fiber, which is not only low in cost but also can be washed many times, has strong moisture resistance, and is suitable for capturing medium-sized particles.

4. A multi-stage dust collector according to claim 1, characterized in that: The precision filter adopts a diamond-shaped cylindrical structure and is installed after the secondary filter. As the last barrier in the entire filtration system, it adopts HEPA standard high-performance filter material to ensure that most of the tiny particles can be filtered out and achieve extremely high filtration efficiency.

5. A multi-stage dust collector according to claim 1, characterized in that: The Arduino single chip controls the working process of the entire conical dust collecting body, including monitoring the dust amount and controlling the operation of the rotating compression device.

6. A multi-stage dust collector according to claim 1, characterized in that: The infrared sensor monitors the dust accumulation inside the cone-shaped dust collector and sends a signal to the Arduino microcontroller when the dust reaches a certain level.

7. A multi-stage dust collector according to claim 1, characterized in that: The wireless communication module is used for remote monitoring and data transmission, and can send the status information of the conical dust collector to the remote monitoring system. The rotary compression device is used to compress the collected dust, reduce the dust volume, and facilitate cleaning, and is installed at the bottom of the conical dust collector. The air outlet is arranged on the side of the conical dust collector, and the purified air is discharged into the environment through the air outlet, ensuring that the purified air can be discharged smoothly. The air inlet pipe is connected to the industrial fan, which is driven by an electric motor to generate sufficient suction to promote air flow.

8. A multi-stage dust collector according to claim 1, characterized in that: The airflow regulating device adjusts the direction and speed of the airflow to ensure that the airflow flows smoothly and evenly to the dust collecting pipe.

9. A multi-stage dust collector according to claim 1, characterized in that: The dust collecting pipe is configured as a frame pipe with a small inlet and a large outlet, which increases the air flow velocity and is beneficial to the separation and collection of particulate matter.

10. A multi-stage dust collector according to claim 1, characterized in that: 49 circular frames are evenly arranged on the lower bottom surface of the upper box body for assembling the multi-stage filter screen, ensuring that the multi-stage filter screen can be firmly installed in the upper box body and together with the middle box body form a complete purification room.

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