Kitchen waste shredder

Abstract

The present application relates to a kind of kitchen garbage grinder in the technical field of household appliances, specifically belongs to a kind of kitchen garbage grinder, including machine 1, the bottom of machine 1 is provided with motor 5, upper portion is provided with the smashing bin 2, the top of smashing bin 2 is provided with inlet 16, side wall is provided with outlet 4, bin is provided with smashing knife 3, the output shaft of motor 5 and smashing knife 3 between still being provided with gear box 6, gear box 6 is provided with the gear set that can let smashing knife 3 change rotation direction.Gear set that the inside of gear box 6 is provided with includes the upper driving gear 7 of being arranged in the output shaft of motor 5, the output gear 8 on the shaft of smashing knife 3, and with the gear engagement of output gear 8 commutating gear 9, also be provided with a movable gear 10 in driving gear 7 and output gear 8 between gear engagement transmission output power, movable gear 10 also can be moved to driving gear 7 and commutating gear 9 between gear engagement transmission output power.Obviously, the rotation direction of the present application is changed by the above-mentioned mechanical type conversion smashing knife, with the advantages of energy saving, high efficiency, long life.

Description

Technical Field

[0001] This invention relates to the field of household kitchen appliances, specifically to a food waste shredder. Background Technology

[0002] Current food waste disposers, also known as kitchen waste grinders, consist of a casing with a motor at the bottom and a grinding chamber at the top. The grinding chamber has an inlet at the top and an outlet on the side. Grinding blades are installed inside the chamber and mounted on the motor's output shaft. Prolonged unidirectional grinding can cause blockages, preventing rotation and stopping the machine. Reversing rotation is necessary to resolve this issue. Current technology uses a circuit board to send a signal to change the motor's direction of rotation. This method has three main problems: if the motor stalls during operation, the high power consumption during stalling can cause a rapid increase in motor temperature, reducing its lifespan.

[0003] 0.5 seconds after the motor stops, the circuit board sends a signal to change the motor control direction. The starting torque of the motor is less than the normal operating torque. Assuming the normal operating torque of the motor is 30N and the starting torque is 24N, if the foreign object blocks the motor with a forward torque of 32N and a reverse torque of 26N, the motor will not start even if the direction is changed. It is also possible that the motor will not be able to start running again after the direction is changed, thus failing to fundamentally solve the problem of blocking the motor by changing the direction.

[0004] If the circuit board program is modified to make the motor rotate forward for 30 seconds and then reverse for 30 seconds to solve the problem of being blocked and unable to start in reverse as mentioned above, the frequent process of starting the motor for 30 seconds, stopping it, and then starting it in reverse for 30 seconds will accelerate the reduction of the motor's lifespan. Summary of the Invention

[0005] In view of this, and to address the shortcomings of existing technologies, a reliable, energy-saving, efficient, and long-lasting food waste shredder is provided.

[0006] To achieve the above objectives, the present invention provides a kitchen waste shredder, which includes a casing, a motor at the bottom of the casing, a shredding chamber at the top, an inlet at the top of the shredding chamber, an outlet on the side wall, a shredding blade inside the chamber, and a gearbox between the output shaft of the motor and the shredding blade, wherein the gearbox contains a gear set that allows the shredding blade to change its rotation direction.

[0007] Furthermore, the gear set provided in the gearbox includes an upper driving gear on the motor output shaft, an output gear on the crusher shaft, and a reversing gear that meshes with the output gear. A movable gear is also provided to mesh between the driving gear and the output gear to transmit power. The movable gear can also move to mesh between the driving gear and the reversing gear to transmit power.

[0008] Furthermore, the gear set inside the gearbox also includes a reduction gear set that is connected to the output shaft of the motor. The reduction gear set output drives a connecting rod, and the connecting rod controls the moving gear to move between the output gear and the reversing gear.

[0009] Furthermore, one end of the connecting rod is provided with a fixed shaft hole for mounting a movable gear, the movable gear is mounted on the fixed shaft hole, and the connecting rod is also provided with a shaft hole and a drive hole, the output rod of the reduction gear set is sleeved in the drive hole.

[0010] The gears of the aforementioned reduction gear set with the output rod are provided with radial grooves. Spring B and the output rod are placed in the grooves, and spring B keeps the output rod pushed outward from the center.

[0011] The aforementioned connecting rod is divided into two sections and interconnected. The fixed shaft hole is located on the front section, while the rear section of the connecting rod has a drive hole and a shaft hole for mounting the fulcrum shaft. A spring A is installed on the two interconnected connecting rod sections to maintain the straightness of the two connecting rod sections.

[0012] The aforementioned reduction gear set has an approximately triangular eccentric wheel on its output wheel as an output rod. The output rod of the triangular eccentric wheel is fitted inside a slide plate with a drive hole. The slide plate is mounted on a fixed plate via rollers and can move left and right. A limit drive linkage is provided inside the slide plate to move left and right together. A return spring is provided between the linkage and the fixed plate.

[0013] As can be seen, this invention proposes a new structure where the motor maintains forward rotation, while the pulverizing blades of the pulverizer automatically switch between forward and reverse rotation. This ensures that the motor maintains a constant torque of 30N during normal operation, automatically switching direction during grinding to reduce the risk of stalling and improve grinding efficiency. Furthermore, it achieves energy saving, high efficiency, and long service life. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the structure of the present invention.

[0015] Figure 2 This is a partial structural diagram of the present invention.

[0016] Figure 3 This is a partial structural diagram of the present invention.

[0017] Figure 4 This is a partial structural diagram of the present invention.

[0018] Figure 5 This is a partial structural diagram of the present invention.

[0019] Figure 6 This is a partial structural diagram of the present invention.

[0020] Figure 7 This is a partial structural diagram of the present invention.

[0021] Figure 8 for Figure 7 Cross-sectional view of the connecting rod assembly.

[0022] Figure 9 for Figure 7 Enlarged view of the gear component.

[0023] Figure 10 This is a schematic diagram illustrating the working principle of the present invention.

[0024] Figure 11 This is a diagram illustrating different working states.

[0025] Figure 12 This is a diagram illustrating different working states.

[0026] Figure 13 This is a structural diagram of another embodiment.

[0027] Figure 14 This is a structural diagram of another embodiment.

[0028] Figure 15 This is a diagram of a linkage structure according to another embodiment.

[0029] Figure 16 for Figure 15 Cross-sectional view of the connecting rod assembly.

[0030] Figure 17 This is a diagram illustrating different working states.

[0031] Figure 18 This is a diagram illustrating different working states.

[0032] Figure 19 This is a schematic diagram of another embodiment.

[0033] Figure 20 This is a diagram illustrating different working states.

[0034] Figure 21 This is a diagram illustrating different working states.

[0035] Figure 22 This is a diagram illustrating different working states.

[0036] Figure 23 This is a diagram illustrating different working states.

[0037] In the attached diagram: 1. Machine casing, 2. Crushing chamber, 3. Crushing blade, 4. Outlet, 5. Motor, 6. Gearbox, 7. Drive gear, 8. Output gear, 9. Reversing gear, 10. Moving gear, 11. Reduction gear set, 12. Connecting rod, 13. Front section, 14. Rear section, 15. Slide, 16. Inlet, 17. Fixed shaft hole, 18. Shaft hole, 19. Drive hole, 20. Output rod, 21. Return spring, 22. Spring A, 23. Spring B, 24. Slide plate, 25. Roller, 26. Fixed plate. Detailed Implementation

[0038] like Figures 1 to 3 As shown, the kitchen waste shredder of the present invention includes a casing 1, a motor 5 is provided at the bottom of the casing 1, a shredding chamber 2 is provided at the top, an inlet 16 is provided at the top of the shredding chamber 2, an outlet 4 is provided on the side wall, a shredding blade 3 is provided inside the chamber, and a gearbox 6 is also provided between the output shaft of the motor 5 and the shredding blade 3, and a gear set is provided inside the gearbox 6 to allow the shredding blade 3 to change the rotation direction.

[0039] The gear set inside the gearbox 6 includes an upper drive gear 7 on the output shaft of the motor 5, an output gear 8 on the shaft of the crusher 3, and a reversing gear 9 that meshes with the output gear 8. A movable gear 10 is also provided to mesh between the drive gear 7 and the output gear 8 to transmit power. The movable gear 10 can also move to mesh between the drive gear 7 and the reversing gear 9 to transmit power.

[0040] The gear set inside the gearbox 6 also includes a reduction gear set 11 that is connected to the output shaft of the motor 5. The reduction gear set 11 drives a connecting rod 12, and the connecting rod 12 controls the moving gear 10 to move between the output gear 8 and the reversing gear 9.

[0041] Therefore, the purpose of this invention is to achieve energy saving, high efficiency, and long service life by mechanically changing the rotation direction of the crushing blade without stopping the machine. To further illustrate this invention, the following three embodiments are provided: Example 1

[0042] like Figures 3 to 12 As shown, one end of the connecting rod 12 of the present invention is provided with a fixed shaft hole 17 for mounting a movable gear 10. The movable gear 10 is mounted on the fixed shaft hole 17. The connecting rod 12 is also provided with a shaft hole 18 and a drive hole 19. The output rod 20 of the reduction gear set 11 is sleeved in the drive hole 19. The gear of the reduction gear set 11 on which the output rod 20 is mounted is provided with a radial sliding groove 15. A spring B23 and the output rod 20 are placed in the sliding groove 15. The spring B23 keeps the output rod 20 pushed outward from the center.

[0043] Its purpose is that when the connecting rod 12 drives the moving gear 10 until the moving gear 10 engages with the output gear 8, the output rod 20 compresses the spring B23, causing the output rod 20 to press towards the center. See the attached instruction manual. Figure 10 and 11 , attached Figure 12 This is the state when the connecting rod 12 drives the moving gear 10 to the opposite position, i.e., the reversing gear 9. In other words, the connecting rod 12 is allowed to have sufficient interference time, so that the crushing blade has enough time to rotate forward or backward. Example 2

[0044] like Figures 13 to 18 As shown, one end of the connecting rod 12 of the present invention is provided with a fixed shaft hole 17 for mounting a movable gear 10. The movable gear 10 is mounted on the fixed shaft hole 17. The connecting rod 12 is also provided with a shaft hole 18 and a drive hole 19. The output rod 20 of the reduction gear set 11 is sleeved in the drive hole 19. The connecting rod 12 is divided into two sections and connected to each other. The aforementioned fixed shaft hole 17 is provided on the front section 13, and the rear section 14 of the connecting rod 12 is provided with a drive hole 19 and a shaft hole 18 for mounting a fulcrum shaft. A spring A22 is provided on the two interconnected sections of the connecting rod 12 to keep the two sections of the connecting rod 12 in a straight line.

[0045] By designing the connecting rod 12 into two sections, the spring A22 keeps both sections of the connecting rod 12 in a straight line. When the connecting rod 12 drives the moving gear 10 to engage with the output gear 8, the output rod 20 continues to drive the rear section 14 of the connecting rod 12 to compress the spring A22, causing the connecting rod 12 to bend and deform. (See the attached instruction manual.) Figure 17 and 18 This allows sufficient time for the connecting rod 12 to be interference-fitted, giving the crushing blade ample time to rotate forward. Similarly, when the connecting rod 12 rotates to 180 degrees, it drives the moving gear 10 to the opposite position, i.e., the reversing gear 9, to perform reverse rotation. Example 3

[0046] like Figures 19 to 23 As shown, the output rod 20 of the present invention has an approximately triangular eccentric wheel mounted on the output wheel of the reduction gear set 11. The output rod 20 of the triangular eccentric wheel is fitted inside the slide plate 24 with a drive hole 19. The slide plate 24 is mounted on the fixed plate 26 by rollers 25 and can move left and right. A limit drive link 12 is provided inside the slide plate 24 to move left and right together. A return spring 21 is provided between the link 12 and the fixed plate 26.

[0047] The structure of Embodiment 3 differs significantly from Embodiments 1 and 2. The working principle of Embodiment 3 will be explained below: The output rod 20 of the triangular eccentric wheel rotates following the output wheel of the reduction gear set 11. The output rod 20 of the eccentric wheel drives the slide plate 24 to move. Due to the effect of the reduction gear set 11, the speed is much slower than that of the motor 5 gear. When the motor 5 gear rotates 20 revolutions, the eccentric wheel of the output rod 20 rotates 1 / 4 revolution. When the eccentric wheel reaches the 1 / 4 displacement position of the slide plate 24, it will drive the connecting rod 12 to move, causing the moving gear 10 to move. When the moving gear 10 moves from the position of the reversing gear 9 to the position of the output gear 8, the crushing blade of the garbage shredder will rotate in the forward direction. The slide plate 24 is connected to the fixed plate 26 by the roller 25 to move in a fixed planar position. The fixed plate 26 and the connecting rod 12 are connected by the return spring 21 to achieve center reset, so that the connecting rod 12 and the pushing feature of the slide plate 24 do not come into contact and remain in the center.

[0048] The advantages of the above solution are as follows: 1. Previously, when grinding kitchen waste, the forward blockage was 32N and the reverse blockage was 26N. The original motor design required a running torque greater than 32N and a starting torque greater than 26N, assuming a motor power of 500W to meet the requirements. With the new solution, since the motor does not need to be restarted, a running torque greater than 32N is sufficient, and a 420W motor is sufficient, saving 80W of energy and greatly satisfying national environmental protection and energy-saving requirements. 2. Because the motor does not need frequent shutdowns to change direction, its lifespan can be greatly extended. 3. By adjusting the distance between the output rod 20 and the center, the gear tooth ratio can be changed to alter the rotational speed and rotational inertia, adjusting the optimal stroke to better meet the product's design requirements.

Claims

1. A kitchen waste shredder, comprising a casing (1), a motor (5) disposed at the bottom of the casing (1), and a shredding chamber (2) at the top, wherein a shredding blade (3) is disposed inside the shredding chamber (2), an inlet (16) is disposed at the top of the shredding chamber (2), and an outlet (4) is disposed on the side wall, characterized in that: A gearbox (6) is also provided between the output shaft of the motor (5) and the crusher (3), and a gear set is provided in the gearbox (6) to allow the crusher (3) to change the rotation direction; The gear set provided in the gearbox (6) includes a drive gear (7) on the output shaft of the motor (5), an output gear (8) on the shaft of the crusher (3), and a reversing gear (9) that meshes with the output gear (8). A moving gear (10) is also provided to mesh between the drive gear (7) and the output gear (8) to transmit power. The moving gear (10) can also move to mesh between the drive gear (7) and the reversing gear (9) to transmit power. The gear set provided in the gearbox (6) also includes a reduction gear set (11) that is also geared on the output shaft of the motor (5). The reduction gear set (11) outputs a drive link (12), and the link (12) controls the moving gear (10) to move between the output gear (8) and the reversing gear (9). One end of the connecting rod (12) is provided with a fixed shaft hole (17) for installing a movable gear (10). The movable gear (10) is installed on the fixed shaft hole (17). The connecting rod (12) is also provided with a shaft hole (18) and a drive hole (19). The output rod (20) of the reduction gear set (11) is sleeved inside the drive hole (19). The gear of the reduction gear set (11) of the output rod (20) is provided with radial grooves (15). Spring B (23) and output rod (20) are placed in the grooves (15). Spring B (23) keeps the output rod (20) pushed outward from the center.

2. The kitchen waste shredder according to claim 1, characterized in that: The connecting rod (12) is divided into two sections and connected to each other. The fixed shaft hole (17) is provided on the front section (13), and the rear section (14) of the connecting rod (12) is provided with a drive hole (19) and a shaft hole (18) for mounting the fulcrum shaft.

3. The kitchen waste shredder according to claim 2, characterized in that: The two connecting rods (12) are provided with springs A (22) to keep the two connecting rods (12) in a straight line.

4. The kitchen waste shredder according to claim 1, characterized in that: The output wheel of the reduction gear set (11) is provided with an approximately triangular eccentric wheel as an output rod (20). The output rod (20) of the triangular eccentric wheel is fitted into a slide plate (24) with a drive hole (19). The slide plate (24) is mounted on a fixed plate (26) by rollers (25) and can move left and right. A limit drive linkage (12) is provided in the slide plate (24) to move left and right together.

5. The kitchen waste shredder according to claim 1, characterized in that: A return spring (21) is provided between the connecting rod (12) and the fixed plate (26).

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