Negative pressure dust collection collector for green belt

The negative pressure dust collection leaf collector for green belts, designed with negative pressure suction and layered filters, solves the problems of easy clogging and low efficiency of existing leaf collectors, and achieves efficient and clean leaf collection and dust treatment.

CN224451486UActive Publication Date: 2026-07-03FUJIAN YANHENG IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FUJIAN YANHENG IND CO LTD
Filing Date
2025-07-02
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing leaf collectors, which rely on fan blades for cleaning, are prone to dust accumulation, machine clogging, low efficiency, complex structure, and cumbersome operation.

Method used

It adopts the principle of negative pressure dust collection, uses a vacuum pump to generate negative pressure, and combines primary and secondary filters for filtration. The layered design filters fallen leaves and dust, is equipped with a scraper to prevent clogging, and uses sound-absorbing material to reduce noise.

Benefits of technology

It improves leaf collection efficiency, reduces the risk of machine clogging, ensures clean air exhaust, reduces noise pollution, and is suitable for use in urban environments.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of green belt negative pressure dust collection fallen leaf collector, it is related to fallen leaf collector technical field, including leaf collection area, dust collection area, buffer area and rear box, the leaf collection area front end is equipped with the suction inlet for suctioning dust air and fallen leaf and upper narrow lower wide, the leaf collection area and dust collection area are spaced by the first filter screen for filtering fallen leaf, the dust collection area rear end upper portion is provided with buffer area, the buffer area and dust collection area are spaced by the second filter screen for filtering dust, the buffer area upper portion is provided with the air outlet for discharging filtered air, the rear box is connected in the buffer area rear, the vacuum pump for making inside the device produce negative pressure is installed in the rear box, the rear box and buffer area bottom are provided with base, wheel is set on the base, the utility model generates negative pressure using vacuum pump, and using double-layer filtration, dust air and fallen leaf are effectively inhaled, collection efficiency is improved, and environmental pollution is reduced.
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Description

Technical Field

[0001] This utility model relates to the field of leaf collector technology, and more specifically to a negative pressure dust collection leaf collector for green belts. Background Technology

[0002] Green belts refer to urban areas used to beautify the environment, provide shade, and improve air quality. They typically include street trees, lawns, and flower beds. These areas require regular maintenance, especially the removal of fallen leaves and litter, to keep them clean and aesthetically pleasing.

[0003] The existing leaf collector, as shown in application number CN202122451053.3, "A leaf collector", "includes a carrier box (1) with a movable part (3) and a leaf collection mechanism (2) connected to the carrier box (1). The leaf collection mechanism (2) includes a sweeping fan blade (23) for stirring up leaves on the ground, a drive member (21) for driving the sweeping fan blade (23) to rotate, and a collection member (24) for receiving and collecting leaves."

[0004] This patent uses a drive unit to rotate the sweeping fan blades, which then push the leaves on the ground into the collection unit, thus completing the collection of leaves. By using the drive unit to rotate the sweeping fan blades, the rotation speed of the sweeping fan blades is increased, making it easier for the sweeping fan blades to push the leaves on the ground into the collection unit.

[0005] However, collecting leaves by using a fan blade sweeping method can easily collect dust into the machine as well. Prolonged operation can cause the machine to become clogged, affecting work efficiency. In addition, the collection method using a fan blade sweeping method is inefficient, has a complex structure, and is cumbersome to operate. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a negative pressure dust suction leaf collector for green belts.

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] This utility model proposes a negative pressure dust collector for green belts, comprising a leaf collection area, a dust collection area, a buffer zone, and a rear box. The leaf collection area has a suction port at the front end, which is narrow at the top and wide at the bottom, for sucking in dusty air and fallen leaves. The leaf collection area and the dust collection area are separated by a primary filter for filtering fallen leaves, which is mounted on a frame. A buffer zone is set at the upper rear end of the dust collection area, which is separated from the dust collection area by a secondary filter for filtering dust. An air outlet for discharging filtered air is set above the buffer zone. The rear box is connected to the back of the buffer zone by a sealing plate. A vacuum pump for generating negative pressure inside the device is installed in the rear box, and a base is provided at the bottom of the rear box.

[0009] As a preferred embodiment of this invention, the filter pores of the secondary filter are more densely packed than those of the primary filter.

[0010] As a preferred embodiment of this utility model, a vertical electric slide rail is provided in front of the frame, and a scraper for preventing fallen leaves from clogging the filter screen is installed on the electric slide rail.

[0011] As a preferred embodiment of this utility model, a handle for controlling the direction is installed on the rear side of the top of the rear box, and wheels for easy sliding are provided on the base.

[0012] As a preferred technical solution of this utility model, a lighting strip is provided below the surface of the leaf collection area to facilitate workers' nighttime work.

[0013] As a preferred embodiment of this utility model, the sealing plate is made of sound-absorbing material.

[0014] The beneficial effects of this utility model are as follows:

[0015] The vacuum pump generates negative pressure to effectively draw in dusty air and fallen leaves, improving collection efficiency and reducing environmental pollution. A primary filter filters fallen leaves, and a secondary filter treats dust. The layered design improves filtration efficiency, prevents clogging, and ensures clean air is discharged. Lighting strips provide nighttime work illumination, ensuring operational safety and efficiency. Sound-absorbing panels reduce operating noise and improve user comfort, making it suitable for urban environments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the external structure of this utility model;

[0018] Figure 3 This is an enlarged view of section A of this utility model.

[0019] Attached reference numerals: 1. Leaf collection area; 2. Dust collection area; 3. Inlet; 4. Sealing plate; 5. Outlet; 51. Buffer zone; 52. Secondary filter; 6. Rear box; 61. Vacuum pump; 7. Handle; 8. Base; 9. Wheels; 11. Lighting strip; 12. Scraper; 13. Frame; 14. Primary filter; 15. Electric slide rail. Detailed Implementation Example 1

[0020] like Figures 1 to 3 As shown, this utility model proposes a negative pressure dust collection leaf collector for green belts, including a leaf collection area, a dust collection area, a buffer zone and a rear box.

[0021] The leaf collection area has a narrow-at-the-top and wide-at-the-bottom suction port at its front end for drawing in dusty air and fallen leaves. The leaf collection area and the dust collection area are separated by a primary filter for filtering fallen leaves, which is mounted on a frame. A buffer zone is set at the upper rear end of the dust collection area, which is separated from the dust collection area by a secondary filter for filtering dust. An air outlet for discharging filtered air is set above the buffer zone. A rear box is connected to the rear of the buffer zone by a sealing plate. A vacuum pump for generating negative pressure inside the device is installed in the rear box, and a base is provided at the bottom of the rear box.

[0022] The secondary filter has a denser pore structure than the primary filter.

[0023] The frame is equipped with a vertical electric slide rail at the front, and a scraper is installed on the electric slide rail to prevent fallen leaves from clogging the filter screen.

[0024] The rear box has a handle for steering on the top rear side, and the base has wheels for easy gliding.

[0025] The leaf collection area is equipped with a lighting strip below the surface to facilitate workers' nighttime work.

[0026] The sealing plate is made of sound-absorbing material.

[0027] Working principle: There is a suction port at the front end of the leaf collection area that is narrow at the top and wide at the bottom; the design of being narrow at the top and wide at the bottom can ensure that the airflow can be concentrated more effectively when drawing in air and fallen leaves, thereby improving the suction efficiency; the suction port is responsible for drawing in dusty air and fallen leaves, introducing external fallen leaves and dust into the device.

[0028] There is a primary filter between the leaf collection area and the dust collection area. The function of the primary filter is to filter fallen leaves. When air and fallen leaves enter the leaf collection area through the inlet, the primary filter will separate the larger fallen leaves to prevent them from entering the dust collection area. The primary filter is installed on the frame and is designed as a detachable or adjustable part for easy cleaning and maintenance.

[0029] A buffer zone is set at the upper rear of the dust collection area; there is a secondary filter between the buffer zone and the dust collection area to filter dust; the filter pores of the secondary filter are denser than those of the primary filter, which can capture finer particles and ensure that the exhaust air is cleaner; there is an air outlet above the buffer zone, through which the filtered air is discharged from the device.

[0030] The buffer zone is connected to the rear chamber via a sealing plate. A vacuum pump is installed inside the rear chamber. The vacuum pump is the core component that generates negative pressure. By generating negative pressure, the vacuum pump creates a low-pressure environment inside the entire device, thereby driving air and fallen leaves into the device through the suction port. After passing through various filtration stages, clean air is finally discharged.

[0031] A vertical electric slide rail is installed at the front of the frame, and a scraper is mounted on the electric slide rail. When too many leaves accumulate on the primary filter screen, or when the leaves concentrate on the upper part of the filter screen, causing airflow blockage and reduced collection efficiency, the scraper can automatically clean the filter screen, keeping it unobstructed and improving the efficiency and service life of the device.

[0032] A handle is installed on the rear top of the rear box, and wheels are on the base; these designs make the device easy to move and operate, suitable for use in different green belt areas.

[0033] There are light strips under the surface of the leaf collection area. Sanitation workers often need to clean the green belt at night or in the early morning when there is no light. The light strips on the collection device can provide lighting when working at night, ensuring the safety of the operators and the efficiency of the work.

[0034] The sealing plate is made of sound-absorbing material, which helps to reduce the noise generated when the device is running, prevents pedestrians or residents near the green belt from being disturbed by excessive noise during operation, and improves the urban environment.

[0035] The control method of this utility model is to control it by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in this field. Since this utility model is mainly used to collect fallen leaves and dust, the control method and wiring layout will not be explained in detail.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A green belt negative pressure dust collection leaf collector comprising a leaf collecting area (1), a dust collecting area (2), a buffer area (51) and a rear box (6), characterized in that: The leaf collection area (1) is equipped with a suction port (3) that is narrow at the top and wide at the bottom for sucking in dusty air and fallen leaves. The leaf collection area (1) and the dust collection area (2) are separated by a primary filter (14) for filtering fallen leaves. The primary filter (14) is installed on the frame (13). A buffer zone (51) is set at the upper part of the rear end of the dust collection area (2). The buffer zone (51) and the dust collection area (2) are separated by a secondary filter (52) for filtering dust. An air outlet (5) for discharging filtered air is set above the buffer zone (51). A rear box (6) is connected to the rear of the buffer zone (51) through a sealing plate (4). A vacuum pump (61) for generating negative pressure inside the device is installed in the rear box (6). A base (8) is provided at the bottom of the rear box (6).

2. The negative pressure leaf collector according to claim 1, characterized in that: The secondary filter (52) has a denser pore structure than the primary filter (14).

3. The negative pressure leaf collector according to claim 1, characterized in that: A vertical electric slide rail (15) is provided in front of the frame, and a scraper (12) for preventing fallen leaves from clogging the filter screen is installed on the electric slide rail (15).

4. The negative pressure leaf collector according to claim 1, characterized in that: The rear box (6) is equipped with a handle (7) for controlling the direction, and the base (8) is provided with wheels (9) for easy sliding.

5. The negative pressure leaf collector of claim 1, wherein: The leaf collection area (1) is provided with a lighting strip (11) below the surface to facilitate workers' nighttime work.

6. The negative pressure leaf collector of claim 1, wherein The sealing plate (4) is made of sound-absorbing material.

Citation Information

Patent Citations

  • CN216515331U