Dust suction filtering system with fan reverse blowback ash cleaning function

Abstract

The utility model belongs to dust collection equipment technical field discloses a dust collection filter system with fan reverse blowback ash removal function, aims at solving the problem that the existing dust collection equipment filter material is easy to block and inconvenient to clean. The system includes the fan that can realize the positive and negative rotation, the filter cylinder that is internally provided with the filter material and the dust collection device. When working normally, the fan rotates positively, when needing to remove ash, the fan reverses, utilizes the reverse airflow generated to blow into the filter cylinder, blows off the dust adhered on the filter material, realizes efficient, convenient ash removal. The utility model completes ash removal by using the equipment self power source, does not need extra air source, and the structure is simple, effectively prolongs the filter material life and maintains the equipment suction.

Description

Technical Field

[0001] This utility model relates to a dust collection and filtration system with a reverse fan back-blowing dust removal function, belonging to the technical field of dust collection equipment. Background Technology

[0002] Vacuum cleaning equipment is widely used in applications such as road sweeping and workshop cleaning. The core of this equipment is its filtration system, which typically contains one or more filter media to separate dust from the air. However, after prolonged use, a large amount of dust accumulates on the surface of the filter media, causing blockage of the filter channels, reduced suction power, and increased motor load. Traditional cleaning methods usually require manual disassembly of the filter media for tapping or blowing, which is cumbersome, interrupts work, and easily generates secondary dust. While some high-end equipment is equipped with a pulse backflushing system, it usually requires an additional compressed air source and complex solenoid valve assembly, resulting in complex structure, high cost, and increased energy consumption.

[0003] Therefore, how to provide a dust collection system that is simple in structure, requires no additional air source, and can conveniently and quickly clean the filter material using its own power is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the background technology mentioned above, and to provide a dust collection and filtration system with a reverse fan back-blowing and dust removal function. This system uses the reverse function of the dust collection fan itself to achieve back-blowing and dust removal of the filter material. It has a compact structure and is easy to operate.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A dust collection and filtration system with a fan reversing and backflushing cleaning function includes: a fan capable of rotating in both directions; a filter cartridge connected to the fan's air outlet via a connecting hose I, the filter cartridge containing filter media for filtering dust; and a dust collection device for collecting dust-laden airflow from the ground, the dust collection device being connected to the filter cartridge via a connecting hose II. When the fan rotates forward, the system performs a dust collection function; when the fan rotates in reverse, the system performs a backflushing cleaning function on the filter media.

[0006] The connection between the connecting hose II and the filter cartridge is equipped with a gate valve that can be selectively opened or closed. During dust removal, a pressure pulse can be generated, causing the filter media to vibrate.

[0007] Preferably, the fan is a vortex fan.

[0008] In this invention, the top of the filter cartridge is provided with an openable cover, and the cover is provided with a pressure-replenishing valve, which is used to supplement air when the negative pressure inside the system is too high, so as to prevent the fan from being overloaded.

[0009] In this invention, a dust collection bucket for collecting dust that has been intercepted and fallen by the filter material is detachably connected to the bottom of the filter cartridge.

[0010] Furthermore, a conical ring plate is provided between the filter cartridge and the detachable dust collection bin, and an air guide plate is provided at the connection between the connecting hose II and the filter cartridge to create a swirling flow of dust-laden airflow. The air guide plate is located below the conical ring plate. Most of the fine dust particles in the dust-laden airflow are blocked and fall off by the conical ring plate, reducing the burden on the filter material.

[0011] Specifically, the vacuuming device includes a vacuum hood, inside which are a roller brush for sweeping up garbage on the ground and a dust collection box for collecting larger particles of garbage.

[0012] Furthermore, the dust collection hood is also equipped with an inclined plate, which is located between the roller brush and the dust collection box, and is used to guide larger particles of garbage that are swept up into the dust collection box.

[0013] With the above structure, when the fan rotates forward and the gate valve is open, the system is in dust suction mode. The dust-laden airflow enters from the dust suction device, passes through the gate valve and the filter cartridge, and is finally discharged by the fan. When dust removal is required, the gate valve is closed, cutting off the passage between the dust suction device and the filter cartridge. Then, the fan is reversed, and the air intake becomes the air outlet. At this time, the fan blows outside air into the filter cartridge through the original exhaust path. The reverse airflow penetrates the filter material and blows off the attached dust, achieving the purpose of automatic dust removal. Attached Figure Description

[0014] Figure 1 This is one of the structural schematic diagrams of this utility model; Figure 2 This is the second structural schematic diagram of this utility model; Figure 3 This is a cross-sectional view of the present invention; Figure 4 It is an exploded view of the cover, filter media, and filter cartridge.

[0015] In the diagram: 1. Fan; 2. Connecting hose I; 3. Cylinder cover; 4. Pressure relief valve; 5. Filter cartridge; 6. Gate valve; 7. Connecting hose II; 8. Removable dust collection bin; 9. Dust collection device; 10. Dust collection hood; 11. Roller brush; 12. Dust collection box; 13. Filter media; 14. Inclined plate; 15. Conical ring plate; 16. Air guide plate. Detailed Implementation

[0016] The present invention will be further described below with reference to specific embodiments.

[0017] The description of this utility model is merely a structural or even functional description of the embodiments, and the scope of this utility model is not limited by the embodiments described herein.

[0018] like Figures 1-4 As shown, this embodiment is achieved through the following technical solution: This utility model provides a dust collection and filtration system with a reverse fan back-blowing dust removal function. The system can be installed on a mobile vehicle (such as a small tricycle) to achieve mobile operation.

[0019] The system mainly consists of three parts: a fan 1, a filter cartridge 5, and a dust collection device 9.

[0020] Fan 1 is a fan that can rotate in both directions to achieve suction and blowing, such as a vortex fan. It serves as the power source for the entire system, providing the negative pressure required for dust collection and the positive pressure airflow required for dust removal.

[0021] The filter cartridge 5 is the core filtration unit of the system. Its top is sealed by the cartridge cover 3. The fan 1 is connected to an interface on the cartridge cover 3 via a connecting hose I2. A pressure-reducing valve 4 is also provided on the cartridge cover 3. This valve automatically opens to supplement external air when the suction port is accidentally blocked, causing excessive negative pressure inside the filter cartridge 5, thus protecting the fan motor from damage due to excessive load. The filter cartridge 5 contains filter media 13 to intercept fine dust particles in the airflow. A removable dust collection bin 8 is connected to the bottom of the filter cartridge 5 by means of clips or other means to collect dust that falls from the filter media 13 for easy centralized cleaning. In addition, a conical ring plate 15 is provided between the filter cartridge 5 and the removable dust collection bin 8. A guide plate 16 is provided at the connection point between the connecting hose II7 and the filter cartridge 5 to create a swirling airflow containing dust. The guide plate 16 is located below the conical ring plate 15.

[0022] The vacuuming device 9 is the part that directly contacts the ground for cleaning. In this embodiment, the main body of the vacuuming device 9 is a vacuum hood 10, with a roller brush 11 at its front end. Driven by a motor, the roller brush rotates to sweep up small stones, debris, and other small objects on the ground. Behind the roller brush 11 is a ramp 14 to guide larger and heavier particles, such as small stones, swept up by the roller brush 11 directly into the dust collection box 12 below. This dust collection box 12 can be pulled out from the side of the vacuum hood 10 for quick emptying of large debris.

[0023] The filter cartridge 5 is connected to the vacuum cleaner 9 via a connecting hose II7. Crucially, a gate valve 6 is installed at the connection point between the connecting hose II7 and the filter cartridge 5, or on the hose II7 itself. This gate valve 6 can be quickly opened and closed manually or electrically.

[0024] The working principle is described as follows: Vacuuming mode: Set gate valve 6 to the open position. Start fan 1 to rotate forward. Fan 1 generates strong negative pressure, and the airflow path is: ground dust / debris → vacuum device 9 → connecting hose II7 → gate valve 6 → filter cartridge 5 → connecting hose I2 → fan 1 → discharged to the atmosphere.

[0025] Inside the vacuum cleaner 9, the roller brush 11 sweeps up debris of all sizes, with heavier pebbles and other small objects falling over the inclined plate 14 into the dust collection box 12; lighter dust is sucked away with the airflow.

[0026] After the dust-laden airflow enters the filter cartridge 5, the dust is efficiently intercepted by the filter media 13. A small portion of the dust adheres to the surface of the filter media, while most of it settles into the removable dust collection bin 8 at the bottom under gravity. The clean air then passes through the filter media 13 and is eventually discharged by the fan.

[0027] Backflush cleaning mode: Perform a dust removal operation when a decrease in suction power is detected or routine maintenance is required.

[0028] First, close the gate valve 6 to completely isolate the airflow channel between the filter cartridge 5 and the dust collection device 9.

[0029] Then, the control circuit causes the fan 1 to rotate in reverse. At this time, the fan draws in outside air from the original exhaust port and blows it out from the original intake port, i.e., one end of the connecting hose I2.

[0030] High-pressure airflow is blown in reverse into the filter cartridge 5 via connecting hose I2 and cartridge cover 3. This airflow penetrates the filter media 13 from the inside out, and the powerful impact effectively blows off the dust layer adhering to the outer surface of the filter media. All the falling dust falls into the removable dust collection bin 8 below.

[0031] To further enhance the dust removal effect, the gate valve 6 can be opened and closed intermittently and rapidly during fan reversal. This operation will cause a sudden and violent fluctuation in the pressure inside the filter cartridge 5, thereby causing a slight vibration of the filter media 13, which helps to shake off more stubborn dust.

[0032] After cleaning, turn off the fan and open gate valve 6 to resume vacuuming.

[0033] Of course, the above description is only a preferred embodiment of this utility model and should not be considered as limiting the scope of the embodiments of this utility model. This utility model is not limited to the above examples, and all equivalent changes and improvements made by those skilled in the art within the scope of this utility model should be included in the patent coverage of this utility model.

Claims

1. A dust collection and filtration system with a reverse-flow fan for dust removal, characterized in that, include: A fan capable of reversing forward and reverse rotation (1); The filter cartridge (5) is connected to the air outlet of the fan (1) through the connecting hose I (2), and the filter cartridge (5) is provided with filter material (13) for filtering dust. A dust collection device (9) is used to collect dust-laden airflow from the ground. The dust collection device (9) is connected to the filter cartridge (5) via a connecting hose II (7). When the fan rotates forward, the system performs a dust suction function; when the fan rotates in reverse, the system performs a back-blowing cleaning function on the filter material (13).

2. The dust collection and filtration system with fan reversal and back-blowing cleaning function according to claim 1, characterized in that, A gate valve (6) that can be selectively opened or closed is provided at the connection between the connecting hose II (7) and the filter cartridge (5).

3. The dust collection and filtration system with fan reversal and back-blowing cleaning function according to claim 1, characterized in that, The aforementioned fan (1) is a vortex fan.

4. The dust collection and filtration system with fan reversal and back-blowing cleaning function according to claim 1, characterized in that, The filter cartridge (5) is provided with an openable cover (3) at the top, and a pressure relief valve (4) is provided on the cover (3).

5. The dust collection and filtration system with fan reversal and back-blowing cleaning function according to claim 1, characterized in that, The bottom of the filter cartridge (5) is connected to a detachable dust collection bucket (8) for collecting dust that is intercepted and falls off by the filter material (13).

6. The dust collection and filtration system with fan reversal and back-blowing cleaning function according to claim 5, characterized in that, A conical ring plate (15) is provided between the filter cartridge (5) and the detachable dust collection bin (8). A guide plate (16) is provided at the connection between the connecting hose II (7) and the filter cartridge (5) to form a swirling flow of dust-laden air. The guide plate (16) is located below the conical ring plate (15).

7. The dust collection and filtration system with fan reversal and back-blowing cleaning function according to claim 1, characterized in that, The vacuuming device (9) includes a vacuum hood (10), which is equipped with a roller brush (11) for sweeping up garbage on the ground and a dust collection box (12) for collecting larger particles of garbage.

8. The dust collection and filtration system with fan reversal and back-blowing cleaning function according to claim 7, characterized in that, The dust collection hood (10) is also provided with an inclined plate (14), which is located between the roller brush (11) and the dust collection box (12) to guide larger particles of garbage that are swept up into the dust collection box (12).

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