Crushing fan impeller for fallen leaf collecting vehicle

Abstract

The utility model relates to the technical field of environmental sanitation machinery, in particular to a crushing fan impeller for a fallen leaf collecting vehicle, which comprises a fan blade mounting plate, a fan blade rotating shaft and fan blades, the fan blade rotating shaft penetrates through the fan blade mounting plate, the fan blades are mounted on the fan blade rotating shaft, and the fan blade mounting plate is clamped between the fan blade rotating shaft and the fan blades. A crushing cutter set is installed on a shaft head of the fan blade rotating shaft, a gap is formed between the crushing cutter set and the top face of the fan blade, the crushing cutter set is close to a fan inlet of the fallen leaf collecting vehicle, fallen leaves are crushed at the moment of being sucked in through the crushing cutter set, the probability that a suction opening and a pipeline are blocked is remarkably reduced, manual intervention cleaning is not needed, and the labor intensity is lowered. The fragmented fallen leaves improve the pipeline conveying efficiency, additional power or a complex screening mechanism does not need to be added, and energy consumption and maintenance convenience are both considered; meanwhile, the mobile suction device does not need to be emptied frequently, and cleaning efficiency and operation continuity are improved.

Description

Technical Field

[0001] This utility model relates to the field of sanitation machinery technology, and in particular to a crushing blower impeller for a leaf collection vehicle. Background Technology

[0002] Traditional leaf collection vehicles rely on a fan system to generate negative pressure suction, drawing fallen leaves into a collection box through an inlet. Its core components include a high-speed rotating fan impeller, guide pipes, and a power unit. During operation, the high-speed rotation of the blades creates airflow, which carries the fallen leaves into the collection box. However, this design has significant drawbacks in the following scenarios:

[0003] First, large fallen leaves cause blockage: large leaves such as sycamore leaves and banana leaves, or leaves with high fiber content, tend to accumulate at the suction inlet, obstructing the airflow channel and causing suction to decrease or even stop.

[0004] Second, the collection efficiency fluctuates: Unbroken fallen leaves occupy the space in the pipes, reducing the effective transport volume per unit time. This requires frequent emptying of the collection boxes, which interrupts the operation and affects the efficiency and continuity of municipal cleaning.

[0005] Third, wet and heavy fallen leaves adhere: In rainy or snowy weather, the moisture content of fallen leaves increases, causing them to clump together and become difficult to suck in or easily get stuck in pipe bends. Once blocked, manual intervention is required to clean them, disassembling complex components (such as impellers and pipes), which is time-consuming and increases the risk of equipment wear. Utility Model Content

[0006] The technical problem to be solved by this utility model is: in order to solve the problems existing in the prior art in the background art, a crushing blower impeller for leaf collection vehicles is provided.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a crushing fan impeller for a leaf collection vehicle, including a fan blade mounting plate, a fan blade shaft and fan blades. The fan blade shaft passes through the fan blade mounting plate, the fan blades are mounted on the fan blade shaft, the fan blade mounting plate is sandwiched between the fan blade shaft and the fan blades, a crushing blade assembly is mounted on the shaft head of the fan blade shaft, there is a gap between the crushing blade assembly and the top surface of the fan blades, and the crushing blade assembly is close to the fan inlet of the leaf collection vehicle.

[0008] Furthermore, the upper corner of the fan blade is a rounded corner, while the other three corners of the fan blade are right angles, and this rounded corner is set close to the fan blade pivot.

[0009] Furthermore, the bottom surface of the fan blade is attached to the surface of the fan blade mounting plate, and the fan blade divides the fan blade mounting plate into several sections. Each section of the fan blade mounting plate has a round hole on its surface, and the fan blade mounting plates of adjacent sections have hexagonal screw holes on their surfaces.

[0010] Furthermore, the outer edge of the fan blade is flush with the outer peripheral wall of the fan blade mounting plate.

[0011] Furthermore, the fan blade shaft includes a mounting shaft and a mounting base. The mounting base is provided on the bottom surface of the mounting shaft. The mounting shaft passes through the fan blade mounting plate, and the mounting base abuts against the fan blade mounting plate. The crushing blade assembly is mounted on the shaft head of the mounting shaft, and the fan blades are mounted on the shaft body of the mounting shaft.

[0012] Furthermore, the outer circumferential wall of the shaft head for mounting the rotating shaft is provided with symmetrically arranged slits. The length of the slits is less than the length of the shaft head for mounting the rotating shaft. The crushing blade assembly is mounted on the rotating shaft with the slits, and the shape of the mounting holes on the crushing blade assembly is consistent with the shape of the shaft head for mounting the rotating shaft with the slits.

[0013] Furthermore, several screw holes are provided on the surface of the mounting base, and these screw holes correspond one-to-one with the round holes on the fan blade mounting plate.

[0014] Furthermore, the bottom surface of the mounting shaft extends beyond the bottom surface of the mounting chassis, and the side of the mounting shaft transitions to the bottom surface of the mounting chassis via a slope.

[0015] Furthermore, a mounting shaft hole is provided on the bottom end face of the mounting shaft along the axial direction, and a transverse shaft hole is provided on the lower end shaft body of the mounting shaft, which communicates with the mounting shaft hole.

[0016] Furthermore, a keyway is provided on the inner wall of the mounting shaft hole, and the keyway is provided along the axial direction of the mounting shaft hole.

[0017] The beneficial effects of this utility model are as follows: This utility model crushes the fallen leaves the moment they are sucked in by the crushing blade assembly, which significantly reduces the probability of blockage in the suction port and pipes. No manual intervention is required for cleaning. The fragmented fallen leaves improve the efficiency of pipe conveying. No additional power or complex screening mechanism is needed, which balances energy consumption and ease of maintenance. At the same time, there is no need to empty the mobile suction cup frequently, which improves cleaning efficiency and work continuity. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a utility model Figure 1 A structural diagram from another direction;

[0021] Figure 3 This is a schematic diagram of the fan blade shaft in this utility model;

[0022] Figure 4 This is a utility model Figure 3A structural diagram from another direction;

[0023] In the diagram: 1. Fan blade, 2. Fan blade shaft, 3. Fan blade mounting plate, 4. Round hole, 5. Hexagonal screw hole, 6. Horizontal shaft hole, 7. Mounting shaft hole, 8. Keyway, 9. Mounting shaft, 10. Mounting chassis, 11. Crushing blade assembly, 12. Screw hole. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0025] like Figures 1-4 The impeller of a crushing blower for a leaf collection vehicle shown includes a blade mounting plate 3, a blade shaft 2, and blades 1. The blade shaft 2 passes through the blade mounting plate 3, and the blades 1 are mounted on the blade shaft 2. The blade mounting plate 3 is sandwiched between the blade shaft 2 and the blades 1. A crushing blade assembly 11 is mounted on the shaft head of the blade shaft 2. There is a gap between the crushing blade assembly 11 and the top surface of the blades 1. The crushing blade assembly 11 is close to the blower inlet of the leaf collection vehicle and crushes the leaves the moment they are sucked in, preventing large pieces of leaves from clogging the suction port. At the same time, the gap between the blades 1 and the crushing blade assembly 11 is used to control the crushing particle size and balance the suction and crushing efficiency.

[0026] like Figure 1 As shown, the upper corner of the fan blade 1 is a rounded corner, and the other three corners of the fan blade 1 are right angles. The rounded corner is set close to the fan blade shaft 2 to optimize the airflow path, reduce the turbulent resistance when the fan blade 1 rotates, and improve the efficiency of the fan. The right angle part strengthens the fan blade 1 and prevents deformation when rotating at high speed.

[0027] like Figure 1 As shown, the bottom surface of the fan blade 1 is attached to the surface of the fan blade mounting plate 3. The fan blade 1 divides the fan blade mounting plate 3 into several sections. A round hole 4 is opened on the surface of the fan blade mounting plate 3 in each section, and a hexagonal screw hole 5 is opened on the surface of the fan blade mounting plate 3 in adjacent sections.

[0028] like Figure 1 As shown, the outer edge of the fan blade 1 is flush with the outer peripheral wall of the fan blade mounting plate 3 to reduce airflow leakage and maintain stable suction; at the same time, it avoids friction between the fan blade 1 and the fan casing, reducing noise and wear.

[0029] like Figure 3As shown, the fan blade shaft 2 includes a mounting shaft 9 and a mounting base 10. The mounting base 10 is provided on the bottom surface of the mounting shaft 9. The mounting shaft 9 passes through the fan blade mounting plate 3. The mounting base 10 abuts against the fan blade mounting plate 3 to enhance the connection rigidity between the mounting shaft 9 and the fan blade mounting plate 3 and prevent loosening during high-speed rotation. The crushing blade assembly 11 is installed on the shaft head of the mounting shaft 9. The fan blade 1 is fixed on the shaft body of the mounting shaft 9 to realize centralized power transmission. The fan blade 1 is installed on the shaft body of the mounting shaft 9.

[0030] like Figure 3 As shown, symmetrically arranged cuts are provided on the outer circumferential wall of the shaft head of the mounting shaft 9. The length of the cuts is less than the length of the shaft head of the mounting shaft 9. The crushing blade assembly 11 is installed on the mounting shaft 9 with cuts. The shape of the mounting hole on the crushing blade assembly 11 is consistent with the shape of the shaft head of the mounting shaft 9 with cuts. The length of the cuts restricts the axial displacement of the crushing blade assembly 11 to prevent loosening and falling off.

[0031] like Figures 3-4 As shown, a number of screw holes 12 are provided on the plate surface of the mounting chassis 10. These screw holes 12 correspond one-to-one with the round holes 4 on the fan blade mounting plate 3, which simplifies the assembly process, ensures the coaxiality of each component, and improves the overall structural stability.

[0032] like Figures 3-4 As shown, the bottom surface of the mounting shaft 9 extends beyond the bottom surface of the mounting chassis 10, reserving space for the mounting shaft 9 to connect with the drive device, facilitating connection with a motor or other power source. The side of the mounting shaft 9 and the bottom surface of the mounting chassis 10 are connected by a slope to reduce stress concentration at the root of the mounting shaft 9 and avoid fatigue fracture caused by high-speed rotation.

[0033] like Figure 4 As shown, a mounting shaft hole 7 is provided on the bottom end face of the mounting shaft 9 along the axial direction, and a transverse shaft hole 6 is provided on the lower end shaft body of the mounting shaft 9. The transverse shaft hole 6 communicates with the mounting shaft hole 7, providing a through channel for key pins or bolts to be fixed with the external drive shaft, preventing the mounting shaft 9 from sliding relative to the drive shaft, and ensuring the reliability of power transmission.

[0034] like Figures 3-4 As shown, a keyway 8 is provided on the inner wall of the mounting shaft hole 7. The keyway 8 is provided along the axial direction of the mounting shaft hole 7. The mounting shaft 9 and the drive shaft are circumferentially locked by a flat key connection to avoid torque transmission failure and facilitate disassembly and maintenance.

[0035] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An impeller for a leaf collection vehicle-mounted crushing blower, characterized in that: The device includes a fan blade mounting plate (3), a fan blade shaft (2), and a fan blade (1). The fan blade shaft (2) passes through the fan blade mounting plate (3), and the fan blade (1) is mounted on the fan blade shaft (2). The fan blade mounting plate (3) is sandwiched between the fan blade shaft (2) and the fan blade (1). A crushing blade assembly (11) is mounted on the shaft head of the fan blade shaft (2). There is a gap between the crushing blade assembly (11) and the top surface of the fan blade (1). The crushing blade assembly (11) is close to the fan inlet of the leaf collection vehicle.

2. The impeller of a leaf collection vehicle-mounted crushing blower according to claim 1, characterized in that: The upper corner of the fan blade (1) is a rounded corner, and the other three corners of the fan blade (1) are right angles. The rounded corner is set close to the fan blade shaft (2).

3. The impeller of a leaf collection vehicle-mounted crushing blower according to claim 1, characterized in that: The bottom surface of the fan blade (1) is attached to the surface of the fan blade mounting plate (3). The fan blade (1) divides the fan blade mounting plate (3) into several sections. A round hole (4) is opened on the surface of the fan blade mounting plate (3) in each section. A hexagonal screw hole (5) is opened on the surface of the fan blade mounting plate (3) in adjacent sections.

4. The impeller of a leaf collection vehicle-mounted crushing blower according to claim 1, characterized in that: The outer edge of the fan blade (1) is flush with the outer peripheral wall of the fan blade mounting plate (3).

5. The impeller of a leaf collection vehicle-mounted crushing blower according to claim 1, characterized in that: The fan blade shaft (2) includes a mounting shaft (9) and a mounting base (10). The mounting shaft (9) is provided with a mounting base (10) on its bottom surface. The mounting shaft (9) passes through the fan blade mounting plate (3). The mounting base (10) abuts against the fan blade mounting plate (3). The crushing blade assembly (11) is mounted on the shaft head of the mounting shaft (9). The fan blade (1) is mounted on the shaft body of the mounting shaft (9).

6. The impeller of a leaf collection vehicle-mounted crushing blower according to claim 5, characterized in that: The outer circumferential wall of the mounting shaft (9) is provided with symmetrically arranged cuts. The length of the cuts is less than the length of the mounting shaft (9). The crushing knife assembly (11) is installed on the mounting shaft (9) with cuts. The shape of the mounting hole on the crushing knife assembly (11) is consistent with the shape of the mounting shaft (9) with cuts.

7. The impeller of a leaf collection vehicle-mounted crushing blower according to claim 5, characterized in that: The mounting base (10) has several screw holes (12) on its surface, and these screw holes (12) correspond one-to-one with the round holes (4) on the fan blade mounting plate (3).

8. The impeller of a leaf collection vehicle-mounted crushing blower according to claim 5, characterized in that: The bottom surface of the mounting shaft (9) extends beyond the bottom surface of the mounting chassis (10), and the side of the mounting shaft (9) and the bottom surface of the mounting chassis (10) are connected by an inclined surface.

9. The impeller of a leaf collection vehicle-mounted crushing blower according to claim 5, characterized in that: The mounting shaft (9) has a mounting shaft hole (7) along the axial direction on the bottom end face, and a transverse shaft hole (6) is provided on the lower end shaft of the mounting shaft (9), which is in communication with the mounting shaft hole (7).

10. The impeller of a leaf collection vehicle-mounted crushing blower according to claim 9, characterized in that: A keyway (8) is provided on the inner wall of the mounting shaft hole (7), and the keyway (8) is provided along the axial direction of the mounting shaft hole (7).

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