A vortex enhanced sealed dust cup assembly for a dusting cart

Abstract

The utility model belongs to the field of environmental protection vehicles, concretely relates to a vortex enhancement type sealed dust suction cover assembly for dust suction vehicle. A vortex enhancement type sealed dust suction cover assembly for dust suction vehicle, including main cover body, being provided with dust collection pipe above main cover body, still including rolling brush subassembly, rolling brush subassembly includes rolling brush, rolling brush motor and pitch adjusting screw rod, is connected with pitch adjusting screw rod respectively at both ends of rolling brush pivot, is provided with baffle assembly in the bottom of main cover body, baffle assembly is movably connected with the bottom of main cover body, the top of main cover body is connected through the tapering pipe of gradually reducing diameter and dust collection pipe, is provided with one deflector in the inner side of rear wall board of main cover body, this deflector sets up at the rear of rolling brush, deflector is wide body arc plate, and its guide surface is one concave continuous smooth circular arc surface, deflector upper end extends and guides dust collection mouth. This dust suction cover assembly integrates rolling brush, dust blocking, flow guiding and negative pressure sealing and other functions, can effectively form efficient sealing airflow field, promotes garbage capture rate.

Description

Technical Field

[0001] This utility model belongs to the field of environmental protection vehicles, specifically relating to a vortex-enhanced sealed dust collection hood assembly for a vacuum cleaner vehicle. Background Technology

[0002] Vacuum sweeper trucks, also known as road sweeper trucks or vacuum cleaning trucks, are highly efficient cleaning vehicles that utilize powerful negative pressure airflow. They represent the advanced level of modern sanitation mechanization. Compared to traditional sweeper trucks with pure brush action, they excel at cleaning fine dust, operating entirely through suction, virtually eliminating secondary dust pollution and offering excellent environmental benefits. Their powerful negative pressure can also remove dust from road surface crevices, resulting in a more thorough cleaning. They can not only dry garbage but also absorb rainwater and mud from roads, handling everything from light plastic bags to heavy metal fragments. Based on these advantages, vacuum sweeper trucks are widely used in locations with high cleanliness requirements or where dust is easily generated.

[0003] The dust hood is the key component of a vacuum cleaner that directly contacts the ground and is responsible for "capturing" trash. Installed at the bottom of the vehicle, it connects to the main air duct and dust collection box via pipes. Its design directly determines the vacuum cleaner's suction efficiency. Existing dust hoods generally suffer from the following problems: 1. Poor sealing: Inadequate sealing at the transition section between the roller brush area and the dust collection pipe inlet leads to loss of negative pressure suction, allowing fine dust to escape through gaps and causing secondary dust generation. 2. Inefficient airflow organization: Relying solely on the linear suction generated by the fan has limited effectiveness in "rolling up" and "peeling off" thick or sticky debris, easily leaving residue below the suction port. 3. Limited adaptability: On uneven surfaces, the dust hood cannot effectively conform to the ground, causing suction leakage and significantly reducing cleaning efficiency. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a vortex-enhanced sealing dust hood assembly for vacuum cleaners, which integrates functions such as roller brush, dust blocking, airflow guiding and negative pressure sealing, and can effectively form a high-efficiency sealed airflow field and improve the garbage collection rate.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a vortex-enhanced sealed dust collection hood assembly for a vacuum cleaner, comprising a main hood body, a dust collection pipe disposed above the main hood body, and a roller brush assembly, wherein the roller brush assembly comprises a roller brush, a roller brush motor, and an adjusting screw, the roller brush being disposed inside the main hood body, the roller brush motor being fixed outside the main hood body, the roller brush being driven to rotate by the roller brush motor, and the two ends of the roller brush shaft being respectively connected to the adjusting screw, the adjusting screw being fixed to the side wall plate of the main hood body.

[0006] A baffle assembly is provided at the bottom of the main hood. The baffle assembly includes a front baffle, a rear baffle, and side baffles. Taking the direction of the vacuum cleaner's movement as the front, a front baffle is located below the front wall panel of the main hood. A rear baffle is located below the rear side of the main hood, opposite the front baffle. Side baffles are located below the side wall panels of the main hood. The baffle assembly is movably connected to the bottom of the main hood. The top of the main hood is connected to the dust collection pipe via a tapered tube with a gradually decreasing diameter. The dust collection port is located at the connection point between the tapered tube and the main hood.

[0007] A guide plate is provided on the inner side of the rear wall panel of the main body. The guide plate is located behind the roller brush. The guide plate is a wide arc plate with a concave, continuous, smooth arc surface. The lower end of the guide plate is fixed to the bottom of the rear wall panel of the main body, while the upper end extends and guides to the dust collection port, so as to seamlessly guide the airflow and debris rolled up by the roller brush into the dust collection port.

[0008] Preferably, the distance between the front wall panel and the rear wall panel of the main cover gradually decreases from bottom to top.

[0009] Preferably, the side baffle is a detachable structure.

[0010] Preferably, the baffle assembly is hinged to the main cover wall panel or connected by a spring.

[0011] Preferably, the thickness of the guide plate gradually increases from bottom to top, so that the space inside the main cover gradually decreases from the bottom to the dust collection port.

[0012] Preferably, the front and rear baffles are made of flexible, wear-resistant materials.

[0013] Preferably, the bristles on the roller brush are arranged in a "V" shape on the roller brush surface, converging from both ends towards the center.

[0014] Preferably, the top of the guide plate adopts a rounded corner design, and the inner wall of the main cover is smooth and without sharp corners.

[0015] Preferably, the top gap between the top of the guide plate and the top of the roller brush is 1-3mm.

[0016] The beneficial effects of this utility model are as follows: The suction efficiency is higher and secondary dust is effectively suppressed. On the one hand, the design of the baffle plate allows the debris picked up by the roller brush to be swept along the concave arc surface of the baffle plate with the airflow, facilitating the formation of a controllable vortex in the airflow within the main hood. This guides the airflow directly into the dust collection port, greatly improving directional transport capability. In contrast, existing technologies rely solely on direct suction from the fan without the baffle plate, making it easy for uncontrollable and harmful vortices to form, preventing airflow and debris from being carried into the dust collection box by the main airflow, resulting in accumulation and blockage in the corners of the hood. On the other hand, the Venturi effect is utilized to effectively improve suction efficiency. The distance between the front and rear walls of the main hood gradually decreases from bottom to top, resulting in a gradual tightening of the main hood from bottom to top. Simultaneously, the main hood is connected to the dust collection pipe through a tapered tube with a gradually decreasing diameter. Combined with the baffle plate design, the space within the main hood gradually decreases from bottom to top. The dust collection pipe then connects to the dust collection box at the rear, forming a complete Venturi tube. Under the influence of the Venturi effect, a negative pressure zone is formed above the roller brush, the guide plate, and the top of the main hood. This allows the dust hood to "automatically" suck in garbage and gas, which not only improves the dust collection efficiency but also prevents the gas inside the dust hood from spreading to the outside, effectively avoiding secondary dust generation.

[0017] The baffle assembly at the bottom of the main hood achieves dynamic sealing. The front and rear baffles in the direction of travel of the vacuum cleaner are movably connected to the bottom of the main hood. Whether hinged or spring-loaded, they can adaptively adjust according to road conditions, ensuring that they always maintain a certain pressure against the ground and dynamically adjust to road undulations. This prevents excessive wear of the baffles and ensures a tight seal. The side baffles can be designed with a quick-removal and replacement structure, facilitating adjustment or replacement based on wear conditions, ensuring the coordination of the side brushes and lateral sealing.

[0018] The air duct design is reasonable, saving energy and reducing consumption. The top of the main hood is connected to the dust collection pipe through a gradually narrowing converging tube. The entire inner wall of the main hood has a smooth transition and no sharp corners. The top of the guide plate is designed with rounded corners to ensure that the airflow can flow smoothly along the wall and prevent flow separation. The guide plate is a concave arc-shaped guide plate with a large radius of curvature. Its shape conforms to the natural flow line of the airflow to achieve smooth guidance and avoid the generation of separation vortices on the back of the guide plate. The top gap between the top of the guide plate and the top of the roller brush is narrow to avoid problems such as airflow short-circuiting, secondary dust, and debris retention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the bottom structure of this utility model; Figure 4 This is a schematic diagram of the structure of the roller brush and guide plate in this utility model.

[0020] Figure label: 1. Main hood; 2. Dust collection pipe; 3. Roller brush assembly; 31. Roller brush; 32. Roller brush motor; 33. Adjustable screw; 4. Guide plate; 5. Baffle assembly; 51. Front baffle; 52. Rear baffle; 53. Side baffle; 6. Gradient tube; 7. Dust collection port. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to illustrate the structure of the present invention more clearly.

[0022] As per the instruction manual Figure 1-4 As shown, a vortex-enhanced sealed dust collection hood assembly for a vacuum cleaner includes a main hood body 1, a dust collection pipe 2 disposed above the main hood body 1, and a roller brush assembly 3. The roller brush assembly 3 includes a roller brush 31, a roller brush motor 32, and an adjusting screw 33. The roller brush 31 is disposed inside the main hood body 1, and the roller brush motor 32 is disposed outside the main hood body 1, specifically on a fixed frame connected to the front wall panel of the main hood body 1. The roller brush 31 is driven to rotate by the roller brush motor 32, and both ends of the roller brush 31's rotating shaft are respectively connected to the adjusting screw 33. The adjusting screw 33 is fixed to the side wall panel of the main hood body 1.

[0023] The roller brush 31 is driven to rotate by the roller brush motor 32. The rotation speed of the roller brush 31 is adjusted, while the height of the roller brush 31 from the ground is adjusted by the adjusting screw 33 to ensure that the roller brush 31 can always keep in contact with the ground for cleaning. Driven by the roller brush motor 32, the roller brush 31 continuously rolls up the garbage from bottom to top at the front wall of the main cover 1, and the garbage enters the dust collection pipe 2 through the guide plate 4. Figure 1 and 2 As shown, the roller brush motor 32 is positioned in the forward direction of the vacuum cleaner, while the roller brush 31 rotates counterclockwise, sweeping and sucking up the debris in front and then throwing it backward. Figure 4 As shown, a schematic diagram of the specific positions of the roller brush and the guide plate is displayed. In this figure, the roller brush 31 also rotates counterclockwise. After the brush bristles sweep out the debris, they are thrown off the arc-shaped guide surface of the guide plate 4 and travel along the guide surface.

[0024] A baffle assembly 5 is provided at the bottom of the main cover 1. The baffle assembly 5 includes a front baffle 51, a rear baffle 52 and a side baffle 53. Taking the direction of the vacuum cleaner's forward movement as the front side, the front baffle 51 is provided below the front wall panel of the main cover 1, the rear baffle 52 is provided below the rear side of the main cover 1 opposite to the front baffle 51, and the side baffle 53 is provided below the side wall panel of the main cover 1. The baffle assembly 5 is movably connected to the bottom of the main cover 1.

[0025] The baffle assembly achieves a seal between the main housing 1 and the ground, preventing secondary dust generation during the cleaning process of the roller brush 31. The baffle assembly 5 is hinged to the wall panel of the main housing 1 or connected by a spring, allowing it to continuously adjust according to ground undulations for dynamic sealing. In existing technologies, the baffle assembly 5 is directly fixed to the main housing 1 with screws, a fixed connection that cannot be automatically adjusted, leading to more severe wear and a tendency for debris to accumulate. The front baffle 51 and rear baffle 52 are aligned with the direction of travel of the vacuum cleaner, making them areas of high wear and thus constructed from flexible, wear-resistant materials. The side baffle 53 is a detachable structure for easy replacement. Clearly, the entire baffle assembly 5 could also be made of flexible, wear-resistant materials and designed as a detachable structure, allowing for selection of suitable configurations based on specific application scenarios.

[0026] The top of the main hood 1 is connected to the dust collection pipe 2 via a tapering pipe 6 with a gradually decreasing diameter. A dust collection port 7 is located at the connection point between the tapering pipe 6 and the main hood 1. Furthermore, the distance between the front and rear walls of the main hood 1 gradually decreases from bottom to top, while the thickness of the guide plate 4 gradually increases from bottom to top. Therefore, the internal space of the main hood 1 gradually narrows from the bottom towards the dust collection port 7. This design facilitates the formation of the Venturi effect, improving the fan's suction capacity for bottom debris and airflow, and reducing secondary dust generation.

[0027] A guide plate 4 is provided on the inner side of the rear wall panel of the main shroud 1. The guide plate 4 is located behind the roller brush 31. The guide plate 4 is a wide-body arc-shaped plate, and its guiding surface is a concave, continuous, smooth arc surface. The lower end of the guide plate 4 is fixed to the bottom of the rear wall panel of the main shroud 1, while the upper end extends and guides to the dust collection port 7, so as to seamlessly guide the airflow and debris rolled up by the roller brush 31 into the dust collection port 7. The top of the guide plate 4 adopts a rounded corner design, and the inner wall of the main shroud 1 is designed with a smooth transition and no sharp corners. The top gap between the top of the guide plate 4 and the top of the roller brush 31 is 1-3mm.

[0028] The arc-shaped structure of the guide plate 4 directs the dust and debris picked up by the roller brush 31 directly into the dust collection port 7 along the guide surface, avoiding the generation of other uncontrollable eddies and problems such as debris retention.

[0029] The bristles on the roller brush 31 are arranged in a "V" shape on its surface, converging from both ends towards the center. When the roller brush 31 rotates, the bristles on both sides generate a velocity component pointing towards the center of the roller brush 31. This velocity component continuously "sweeps" or "throws" debris from the sides of the machine towards the central suction port area, preventing debris from "lingering" on the sides of the roller brush 31 or being pushed forward without being sucked in. This ensures that debris is efficiently concentrated in the optimal capture area below the suction port.

[0030] In this invention, the baffle assembly 5 dynamically adjusts to follow the undulations of the road surface during operation, ensuring that all garbage can enter the main hood 1. During suction, the optimized and improved air duct design significantly enhances the suction efficiency of the blower and reduces its energy consumption. The guide plate 4 design allows garbage to flow along the optimized air duct into the dust collection port 7, preventing garbage accumulation. Therefore, through these measures, a highly efficient sealed airflow field is formed inside the main hood 1, achieving the goal of improving garbage collection rate and cleaning efficiency.

[0031] It should be noted that the description of the front and rear positional relationship in this application is based on the forward direction of the vacuum cleaner, with the opposite direction being the rear. In the accompanying drawings, the position of the roller brush motor 32 is considered the front, and its opposite position is considered the rear. The airflow of garbage brushed by the roller brush 31 travels from the front wall of the main body 1 to the rear wall. After reaching the rear wall, the airflow is guided by the guide plate 4 until it enters the dust collection port 7.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A vortex-enhanced sealing dust collection hood assembly for a vacuum cleaner truck, comprising a main hood body and a dust collection pipe disposed above the main hood body, characterized in that: It also includes a roller brush assembly, which comprises a roller brush, a roller brush motor, and an adjusting screw. The roller brush is disposed inside the main cover, and the roller brush motor is fixed outside the main cover. The roller brush is driven to rotate by the roller brush motor. Both ends of the roller brush shaft are connected to the adjusting screw, which is fixed to the side wall panel of the main cover. A baffle assembly is provided at the bottom of the main hood. The baffle assembly includes a front baffle, a rear baffle, and side baffles. Taking the direction of the vacuum cleaner's movement as the front, a front baffle is located below the front wall panel of the main hood. A rear baffle is located below the rear side of the main hood, opposite the front baffle. Side baffles are located below the side wall panels of the main hood. The baffle assembly is movably connected to the bottom of the main hood. The top of the main hood is connected to a dust collection pipe via a tapered tube with a gradually decreasing diameter. A dust collection port is located at the connection point between the tapered tube and the main hood. A guide plate is provided on the inner side of the rear wall panel of the main body. The guide plate is located behind the roller brush. The guide plate is a wide arc plate with a concave, continuous, smooth arc surface. The lower end of the guide plate is fixed to the bottom of the rear wall panel of the main body, while the upper end extends and guides to the dust collection port, so as to seamlessly guide the airflow and debris rolled up by the roller brush into the dust collection port.

2. The vortex-enhanced sealing dust hood assembly for a vacuum cleaner truck according to claim 1, characterized in that: The distance between the front and rear walls of the main enclosure gradually decreases from bottom to top.

3. The vortex-enhanced sealing dust hood assembly for a vacuum cleaner truck according to claim 1, characterized in that: The side panel is a detachable structure.

4. The vortex-enhanced sealing dust hood assembly for a vacuum cleaner truck according to claim 1, characterized in that: The baffle assembly is hinged to the main cover wall panel or connected by a spring.

5. The vortex-enhanced sealing dust hood assembly for a vacuum cleaner truck according to claim 1, characterized in that: The thickness of the guide plate gradually increases from bottom to top, and the space inside the main hood gradually decreases from the bottom to the dust collection port.

6. The vortex-enhanced sealing dust hood assembly for a vacuum cleaner truck according to claim 1, characterized in that: The front and rear baffles are made of flexible, wear-resistant materials.

7. The vortex-enhanced sealing dust hood assembly for a vacuum cleaner truck according to claim 1, characterized in that: The bristles on the roller brush are arranged in a "V" shape on the surface of the roller brush, converging from both ends towards the center.

8. The vortex-enhanced sealing dust hood assembly for a vacuum cleaner truck according to claim 1, characterized in that: The top of the deflector plate features a rounded corner design, and the inner wall of the main cover has a smooth transition without any sharp corners.

9. The vortex-enhanced sealing dust hood assembly for a vacuum cleaner truck according to claim 1, characterized in that: The top gap between the top of the guide plate and the top of the roller brush is 1-3mm.

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