A nozzle suction type leaf shredder

Abstract

This utility model relates to the field of cleaning equipment technology and discloses a suction-type leaf shredder, including a suction frame body with two suction nozzles. From bottom to top, each suction nozzle has a shredding mechanism, a fine shredding mechanism, a flow guiding mechanism, and an anti-fall mechanism. The shredding mechanism includes a gear motor mounted on the outside of the suction nozzle. A cutter shaft is fixedly connected to the output end of the gear motor, and the end of the cutter shaft away from the gear motor is rotatably connected to the inner wall of the suction nozzle. Multiple cutter sleeves are arranged on the outside of the cutter shaft. Through the cooperation of a compression plate and the shredding mechanism, the leaves are pre-compressed after being sucked in, effectively reducing the leaf volume and providing a more compact leaf accumulation for the subsequent shredding process. This avoids low shredding efficiency due to loose leaf volume, ensuring preliminary shaping and compaction of the leaves before entering the shredding area, and significantly improving shredding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, specifically a suction-type leaf shredder. Background Technology

[0002] Suction-type sweeping equipment typically refers to equipment that uses a suction system and negative pressure device to suck air and debris (such as leaves and dust) into the waste bin of the sweeping equipment, thereby cleaning roads or sites. A suction system generally consists of a nozzle, suction pipe, negative pressure system, and waste bin. The nozzle uses negative pressure to draw in air and debris, which is then transported to the waste bin through pipes. Compared to traditional sweeping equipment, suction-type sweeping equipment has stronger suction power and can efficiently clean up light debris such as dust and fallen leaves from the ground, thus it is widely used in sanitation and cleaning work.

[0003] In suction-type leaf sweeping equipment, the sweeping device mainly relies on the suction nozzle and negative pressure system to complete the suction and transport of leaves. However, existing suction nozzle designs generally suffer from insufficient leaf processing capacity. Leaves are large and loose in shape, especially in autumn and winter when fallen leaves accumulate significantly. When leaves enter the suction nozzle, they easily cause blockage or insufficient suction. Because the suction nozzle cannot effectively accommodate large, loose leaves, these leaves often accumulate in the pipes, causing blockages in the sweeping equipment. This requires manual intervention by sanitation workers, which not only increases workload but also greatly reduces work efficiency. Therefore, a suction-type leaf shredder is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a suction-type leaf shredder, which aims to improve the problems of clogging, low shredding efficiency and fragment backflow during the leaf suction process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a suction-type leaf shredder, comprising a suction frame body, wherein two suction nozzle bodies are provided on the suction frame body, and the suction nozzle bodies are provided with a shredding mechanism, a fine shredding mechanism, a flow guiding mechanism and an anti-fall mechanism in sequence from bottom to top;

[0006] The crushing mechanism includes a gear motor, which is installed on the outside of the suction nozzle body. The output end of the gear motor is fixedly connected to a blade shaft. The end of the blade shaft away from the gear motor is rotatably connected to the inner wall of the suction nozzle body. Multiple blade holder sleeves are provided on the outside of the blade shaft, and multiple blade holder bodies are fixedly connected to the outside of the blade holder sleeves.

[0007] Preferably, the fine crushing mechanism includes a fixing ring, which is fixedly connected to the inner wall of the suction nozzle body, and a plurality of fine crushing blades are fixedly connected to the inner side of the fixing ring.

[0008] Preferably, the flow guiding mechanism includes a positioning post, and multiple spiral guide vanes are fixedly connected to the outer side of the positioning post.

[0009] Preferably, a fixing ring 2 is fixedly connected to one end of the plurality of spiral guide vanes away from the positioning post, and the outer side of the fixing ring 2 is fixedly connected to the inner side of the nozzle body.

[0010] Preferably, the anti-fall mechanism includes a connecting ring, and the bottom of the connecting ring is provided with an inclined surface.

[0011] Preferably, a plurality of connecting rods are fixedly connected at equal intervals on the outer side of the connecting ring, and a fixing ring three is fixedly connected to the end of the connecting rod away from the connecting ring. The outer side of the fixing ring three is fixedly connected to the inner side of the nozzle body.

[0012] Preferably, multiple compression plates are evenly spaced on the inner side of the nozzle body near the bottom.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the compression plate and the crushing mechanism work together to pre-compress the leaves after they are sucked in, which effectively reduces the volume of the leaves and provides a more compact accumulation of leaves for the subsequent crushing process. This avoids the low crushing efficiency caused by loose volume and ensures that the leaves are initially shaped and compacted before entering the crushing area, which significantly improves the crushing efficiency.

[0015] 2. In this invention, multi-stage leaf pulverization is achieved through the cooperation of a crushing mechanism and a fine crushing mechanism. First, a gear motor drives the blade holder for initial pulverization, and then the fine crushing blades further refine the fragments. This combination of multi-point cutting and fine processing reduces the volume of leaf fragments and improves the uniformity and precision of leaf pulverization.

[0016] 3. In this invention, the spiral guide vanes of the flow guiding mechanism guide the leaf fragments upward along a spiral path, avoiding disordered accumulation of fragments during transportation. The fixed ring stabilizes the position of the spiral guide vanes, ensuring a clear flow direction and stable transportation of the fragments, significantly improving the transmission efficiency of the leaf fragments and preventing fragment blockage and obstructed transportation paths.

[0017] 4. In this utility model, the anti-fall mechanism, in conjunction with the flow guiding mechanism, effectively solves the problem of leaf fragments falling back when suction is interrupted or airflow reverses. The design of the connecting ring and the inclined surface ensures that the fragments do not slide directly, but are forced to change their trajectory through a dispersion effect, avoiding the instantaneous concentration of leaf fragments, ensuring the smooth and stable flow path, and preventing the guide vanes from becoming clogged. Attached Figure Description

[0018] Figure 1This is a perspective view of a suction-type leaf shredder proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the suction body structure of a suction-type leaf shredder proposed in this utility model;

[0020] Figure 3 This is a top view of the suction nozzle body of a suction-type leaf shredder proposed in this utility model;

[0021] Figure 4 A side section of the suction body of a suction-type leaf shredder proposed in this utility model. Figure 1 ;

[0022] Figure 5 A side section of the suction body of a suction-type leaf shredder proposed in this utility model. Figure 2 ;

[0023] Figure 6 This is a schematic diagram of the fine crushing mechanism of a suction-type leaf shredder proposed in this utility model;

[0024] Figure 7 This is a schematic diagram of the flow guiding mechanism of a suction-type leaf shredder proposed in this utility model;

[0025] Figure 8 This is a schematic diagram of the anti-fall mechanism of a suction-type leaf shredder proposed in this utility model.

[0026] Legend:

[0027] 1. Suction nozzle holder body; 2. Suction nozzle body; 3. Compression plate; 4. Crushing mechanism; 401. Gear motor; 402. Blade shaft; 403. Blade holder sleeve; 404. Blade holder body; 5. Fine crushing mechanism; 501. Fixing ring one; 502. Fine crushing blade; 6. Guide mechanism; 601. Fixing ring two; 602. Spiral guide vane; 603. Positioning column; 7. Anti-fall mechanism; 701. Fixing ring three; 702. Connecting rod; 703. Connecting ring; 704. Inclined surface. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see the appendix Figure 1 - Appendix Figure 8This invention provides a suction-type leaf shredder, including a suction frame body 1, on which two suction bodies 2 are provided. The suction bodies 2 are provided with a shredding mechanism 4, a fine shredding mechanism 5, a flow guiding mechanism 6 and an anti-fall mechanism 7 arranged sequentially from bottom to top. Multiple compression plates 3 are arranged at equal intervals on the inner side of the suction body 2 near the bottom.

[0030] Specifically, by connecting the suction nozzle body 2 to the suction pipe on the sweeper, the suction-type leaf shredder can be interchanged with the suction nozzle of a traditional sweeper. This allows users to quickly adapt to the leaf-clearing needs of autumn and winter seasons by simply installing a single device.

[0031] By using the compression plate 3 in conjunction with the crushing mechanism 4, the leaves are pre-compressed after being sucked in, reducing their volume and facilitating subsequent crushing. This avoids the impact of loose volume on crushing efficiency, achieving preliminary shaping and compaction before crushing.

[0032] The crushing mechanism 4, in conjunction with the fine crushing mechanism 5, performs preliminary crushing on the incoming leaves, enabling the leaves to be quickly cut and broken, reducing the leaf volume, improving the fragment passing capacity, and achieving efficient initial leaf cutting.

[0033] The crushing mechanism 5, in conjunction with the guiding mechanism 6, further refines the crushed leaves, making the leaf fragments smaller and more uniform, effectively improving the crushing fineness and achieving a refined processing effect.

[0034] After the leaf fragments are refined, the guide mechanism 6 guides them in a spiral path, causing the fragments to rise in a spiral shape, avoiding disorderly accumulation of fragments, and achieving stable and orderly conveying path control.

[0035] By using the anti-sudden fall mechanism 7 in conjunction with the flow guiding mechanism 6, a disturbance structure is formed when the debris approaches the outlet, so that the leaf debris is scattered when the suction is interrupted or there is a sudden backflow, thus avoiding the debris falling back and clogging. This achieves the functions of debris falling disturbance and guide vane anti-clogging.

[0036] By cooperating with the nozzle frame body 1 and the nozzle body 2, the overall structure is supported by a stable installation platform, enabling the centralized integration of various functional modules and realizing the structural support and unified operation of the overall equipment.

[0037] By setting two suction nozzle bodies 2 to cooperate with the suction nozzle frame body 1, the device has dual-channel suction capability during operation, increasing the leaf coverage width and efficiency, and achieving a high-efficiency, large-area leaf cleaning effect.

[0038] Please see the appendix Figure 2 Appendix Figure 4 and attached Figure 5The crushing mechanism 4 includes a gear motor 401, which is installed on the outside of the suction nozzle body 2. The output end of the gear motor 401 is fixedly connected to a blade shaft 402. The end of the blade shaft 402 away from the gear motor 401 is rotatably connected to the inner wall of the suction nozzle body 2. Multiple blade holder sleeves 403 are provided on the outside of the blade shaft 402, and multiple blade holder bodies 404 are fixedly connected to the outside of the blade holder sleeves 403.

[0039] Specifically, the gear motor 401 cooperates with the tool holder shaft 402 to provide a continuous and stable rotational driving force, so that the tool holder shaft 402 keeps rotating at high speed.

[0040] By cooperating with the tool holder sleeve 403, the tool holder sleeve 402 drives multiple tool holder sleeves 403 to rotate synchronously during the rotation process, so that the cutting process is continuous and uniform, realizing power transmission and multi-point cutting in the leaf crushing process;

[0041] By cooperating with the blade holder sleeve 403 and the blade holder body 404, a multi-point distributed cutting surface is formed during rotation, increasing the number and frequency of cutting in contact with the leaves, thus achieving the effect of quickly chopping the leaves and producing uniform leaf fragments.

[0042] Multiple blade holders 404 form multiple cutting structures during rotation, which crush the incoming leaves in layers, achieving high cutting efficiency and pulverizing performance that is adaptable to a variety of leaf types.

[0043] Please see the appendix Figure 2 Appendix Figure 4 and attached Figure 6 The fine crushing mechanism 5 includes a fixing ring 501, which is fixedly connected to the inner wall of the suction nozzle body 2. Multiple fine crushing blades 502 are fixedly connected to the inner side of the fixing ring 501.

[0044] Specifically, by cooperating with the fixed ring 501 and the fine crushing blade 502, a stable support structure is formed, which keeps the fine crushing blade 502 fixed during the crushing process, thus achieving a precise and stable cutting environment;

[0045] By using the fine shredder 502 in conjunction with the shredded leaf fragments at the front end, the leaves are further cut as they pass by, resulting in the fragments being shredded a second time and achieving the effect of refining the leaf fragments.

[0046] By cooperating with multiple fine cutting blades 502 and a fixing ring 501, leaf fragments are cut simultaneously in multiple directions, increasing the frequency of cutting contact and achieving the effect of thorough fragment cutting and more complete crushing.

[0047] By using the fixing ring 501 in conjunction with the suction nozzle body 2, the structural position of the fine fragmentation area is defined, ensuring that the fine fragmentation blade 502 is always on the path through which the leaf fragments pass, thus achieving full coverage shearing of the leaf fragments by the fine fragmentation blade 502.

[0048] Please see the appendix Figure 4 Appendix Figure 5 and attached Figure 7 The flow guiding mechanism 6 includes a positioning post 603. Multiple spiral guide vanes 602 are fixedly connected to the outer side of the positioning post 603. A fixing ring 601 is fixedly connected to the end of the multiple spiral guide vanes 602 away from the positioning post 603. The outer side of the fixing ring 601 is fixedly connected to the inner side of the nozzle body 2.

[0049] Specifically, by cooperating with the positioning post 603 and the spiral guide vane 602, a spiral guide central axis is constructed, so that the spiral guide vane 602 is stably arranged around the center, thereby realizing the axial stability and operational reliability of the guide structure;

[0050] By cooperating with the spiral guide vane 602 and the fixed ring 601, the leaf fragments are guided to rise along the spiral path under negative pressure, avoiding the disordered movement of the fragments and achieving a spiral guiding effect with clear flow direction and stable delivery.

[0051] By using multiple spiral guide vanes 602 in conjunction with leaf fragments, the fragments are continuously guided in a limited direction during the conveying process to prevent them from swirling and accumulating, thus achieving a smooth and efficient vertical conveying function.

[0052] By cooperating with the nozzle body 2 through the fixed ring 601, the spiral guide vane 602 is structurally designed to form a closed flow guiding cavity, so that the flow guiding path remains constant, thereby achieving the effect of controllable fragment trajectory and improved conveying reliability.

[0053] Please see the appendix Figure 4 Appendix Figure 5 and attached Figure 8 The anti-fall mechanism 7 includes a connecting ring 703, with an inclined surface 704 at the bottom of the connecting ring 703. Multiple connecting rods 702 are fixedly connected at equal intervals on the outer side of the connecting ring 703. A fixing ring 701 is fixedly connected to the end of the connecting rod 702 away from the connecting ring 703. The outer side of the fixing ring 701 is fixedly connected to the inner side of the nozzle body 2.

[0054] Specifically, by cooperating with the inclined surface 704 and the connecting ring 703, when the leaf fragments move, the inclined surface 704 and the connecting ring 703 disperse the fragments, preventing the fragments from concentrating and flowing back in a short time and clogging the spiral guide vane 602, thus achieving the effect of controlled fragment fall and preventing blockage.

[0055] By cooperating with the connecting rod 702 and the connecting ring 703, a multi-point distributed support structure is formed during the disturbance process, which achieves the effect of uniform spatial distribution of disturbance path and diffusion of fragments.

[0056] By cooperating with the inclined surface 704 and the connecting rod 702, the leaf fragments are deflected and guided when the suction is interrupted or the airflow is reversed, thus achieving the effect of changing the trajectory of the fragments and breaking up the disturbance.

[0057] By cooperating with multiple connecting rods 702 and fixed ring 3 701, a circumferential disturbance frame is formed, which realizes the effect of uniformly disturbing the debris at the flow outlet and preventing accumulation.

[0058] Working principle: First, connect the suction pipe on the sweeper to the top of the suction nozzle body 2. The fan inside the suction pipe operates to generate negative pressure. Under the action of negative pressure, leaves on the ground are sucked into the suction nozzle body 2 through the bottom opening.

[0059] After the leaves are sucked in from the bottom of the suction nozzle 2, they converge towards the center of the suction nozzle 2 under the action of negative pressure suction and their own gravity. At this time, the compression plate 3, located at the bottom of the crushing mechanism 4 and inclined towards the center of the suction nozzle 2, will initially squeeze the leaves, compacting them and reducing their volume. Then they enter the crushing mechanism 4, and the gear motor 401 is started. After the gear motor 401 starts, it drives the blade shaft 402 to rotate at high speed. The blade holder sleeve 403 and the blade holder body 404 on the blade shaft 402 rotate accordingly. The rotating blade holder body 404 cuts the leaves, initially crushing them.

[0060] The initially crushed leaf fragments continue to move upwards and enter the fine crushing mechanism 5. The fine crushing blade 502 inside the fixed ring 501 remains stationary. As the leaf fragments pass by, the fine crushing blade 502 further cuts and crushes them, making the leaf fragments even smaller and improving the crushing effect.

[0061] As the fine leaf fragments continue to move upward under negative pressure, the spiral guide vane 602 on the outside of the positioning post 603 guides the leaf fragments along a specific spiral path. The fixing ring 601 fixes the position of the spiral guide vane 602 to ensure stable flow guidance. Guided by the spiral guide vane 602, the leaf fragments form a spiral upward trajectory within the nozzle body 2, ensuring that they can be smoothly and orderly transported to the top of the nozzle body 2, avoiding blockage.

[0062] When leaf fragments reach the anti-fall mechanism 7, they will continue to move upwards from the space between the fixed ring 701 and the connecting ring 703, as well as the space inside the connecting ring 703, and enter the suction pipe on the sweeper. When the negative pressure ends, if there are leaf fragments in the suction pipe, they will move into the nozzle body 2. At this time, they will come into contact with the connecting ring 703 and the inclined surface 704 to prevent the leaf fragments from sliding directly down. The moving leaf fragments will be forced to disperse by the connecting ring 703 and the inclined surface 704, avoiding a large number of leaf fragments moving at once and clogging the spiral guide vane 602.

[0063] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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. A suction nozzle type leaf shredder comprising a nozzle holder body (1), characterized in that, The suction nozzle frame body (1) is provided with two suction nozzle bodies (2), which are sequentially provided with a crushing mechanism (4), a fine crushing mechanism (5), a flow guide mechanism (6) and an anti-quick-falling mechanism (7) from bottom to top; The crushing mechanism (4) comprises a gear motor (401) installed on the outer side of the suction nozzle body (2), and the output end of the gear motor (401) is fixedly connected with a cutter bar shaft (402), one end of the cutter bar shaft (402) away from the gear motor (401) is rotatably connected to the inner wall of the suction nozzle body (2), and the outer side of the cutter bar shaft (402) is provided with a plurality of cutter holder sleeves (403), and the outer side of the cutter holder sleeve (403) is fixedly connected with a plurality of cutter holder bodies (404).

2. A nozzle-suction type leaf shredder according to claim 1, wherein The fine crushing mechanism (5) comprises a fixed ring one (501) fixedly connected to the inner wall of the suction nozzle body (2), and the inner side of the fixed ring one (501) is fixedly connected with a plurality of fine crushing knives (502).

3. A nozzle-suction type leaf shredder according to claim 1, wherein The flow guide mechanism (6) comprises a positioning column (603), and the outer side of the positioning column (603) is fixedly connected with a plurality of spiral guide vanes (602).

4. A nozzle-suction leaf shredder according to claim 3, wherein One end of the plurality of spiral guide vanes (602) away from the positioning column (603) is fixedly connected with a fixed ring two (601), and the outer side of the fixed ring two (601) is fixedly connected to the inner side of the suction nozzle body (2).

5. A nozzle-suction type leaf shredder according to claim 1, wherein The anti-quick-falling mechanism (7) comprises a connecting ring (703), and the bottom of the connecting ring (703) is provided with an inclined surface (704).

6. A suction nozzle type leaf shredder according to claim 5, wherein The outer side of the connecting ring (703) is fixedly connected with a plurality of connecting rods (702) at equal distances, one end of the connecting rod (702) away from the connecting ring (703) is fixedly connected with a fixed ring three (701), and the outer side of the fixed ring three (701) is fixedly connected to the inner side of the suction nozzle body (2).

7. A suction nozzle type leaf shredder as claimed in claim 1, wherein The inner side of the suction nozzle body (2) is provided with a plurality of compression plates (3) at equal distances near the bottom end.

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