Cutting device for waste disposer

Abstract

The utility model relates to a kind of cutting device of garbage processor, comprising: grinding cavity;Disc assembly, be located in the grinding cavity, including cutterhead, the cutterhead can be rotated by driving motor;Cutting disc, below cutterhead, and can rotate with cutterhead, the outer periphery of the cutting disc has first cutting tooth;Further comprising cutting ring assembly in the grinding cavity and relative to the fixed cutting ring assembly of grinding cavity, the cutting ring assembly includes cutting ring in the cutting disc periphery, the inner peripheral wall of the cutting ring has the second cutting tooth extending radially inward, in the process that the cutting disc rotates with cutterhead, the first cutting tooth and the second cutting tooth form cutting cooperation.Advantages are that: it can effectively improve the cutting effect of cutting device to fiber class garbage material.

Description

Technical Field

[0001] This utility model relates to the field of garbage disposers, and in particular to a cutting device for a garbage disposer. Background Technology

[0002] Food waste disposers are used to break down food scraps into small particles that are safe to pass through drain pipes. A traditional food waste disposer consists of a food conveying section, a motor section, and a grinding system located between the two sections. The grinding system is the core of the food waste disposer and typically includes a rotating blade and a fixed grinding ring. The blade has blades for cutting food waste and is mounted on a motor shaft. The motor drives the blade to rotate relative to the grinding ring, which usually has grinding holes and cutting teeth to further grind and pulverize the food waste thrown from the blade to the grinding ring. In order to effectively cut long-fiber waste, a cutting disc with cutting teeth is usually set below the blade assembly. The cutting disc can rotate with the blade. When the corresponding material flows out of the grinding ring with the water flow and enters the drainage chamber, it can be cut again by the cutting disc at the bottom of the blade, which further improves the crushing effect of the material. A similar structure is disclosed in the Chinese invention patent application "Garbage Disposal Unit" with application number CN201910922866.0 (authorization announcement number: CN110528642B).

[0003] However, the garbage disposal unit in the aforementioned patent application (CN201910922866.0) still has some shortcomings: the corresponding cutting teeth are only set on the outer periphery of the cutting disc, which has a limited cutting effect on the garbage material flowing out of the grinding ring. When the garbage material is slightly away from the cutting teeth in the radial direction, there is a situation where the garbage material cannot be effectively cut. Therefore, there is still a risk of clogging the sewer channel due to the inability to effectively cut fibrous garbage.

[0004] Therefore, the cutting device of existing garbage disposals still needs further improvement. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a cutting device for a waste processor that can effectively improve the cutting effect on fibrous waste materials, based on the current state of the technology.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a cutting device for a garbage disposer, comprising:

[0007] Grinding chamber;

[0008] A cutting disc assembly, disposed within the grinding chamber, includes a cutting disc that can be rotated by a drive motor;

[0009] A cutting disc is located below the blade disc and can rotate with the blade disc. The outer periphery of the cutting disc has first cutting teeth.

[0010] It also includes a cutting ring assembly located within the grinding cavity and fixed relative to the grinding cavity. The cutting ring assembly includes a cutting ring located around the cutting disc. The inner peripheral wall of the cutting ring has a second cutting tooth extending radially inward. During the rotation of the cutting disc with the cutting disc, the first cutting tooth and the second cutting tooth form a cutting engagement.

[0011] To ensure cutting effectiveness, the first and second cutting teeth partially overlap vertically while maintaining a gap in the same direction. This design of partial overlap with gaps enhances cutting synergy and allows the cut waste material to fall smoothly.

[0012] As an improvement, to further optimize cutting performance, the distance between the first cutting tooth and the adjacent second cutting tooth in the vertical direction is denoted as the first distance. The value range of the first distance is: 1mm ≤ first distance ≤ 10mm. The aforementioned first distance can refer to the distance between the first cutting tooth and the adjacent second cutting tooth above it, or it can refer to the distance between the first cutting tooth and the adjacent second cutting tooth below it.

[0013] As an improvement, the second cutting tooth is a vertically extending triangular tooth with a downward-sloping cutting surface at its top. The first cutting tooth is located above the cutting surface of the second cutting tooth. The vertical extension of the triangular tooth and the inclined cutting surface at its top effectively cuts falling waste material and guides it downwards. The first cutting teeth of the cutting disc are located above the inclined surface, forming a continuous cutting trajectory and ensuring cutting efficiency.

[0014] In some solutions, there may be one (or a group) of second cutting teeth on both the cutting disc and the cutting ring. However, considering that the processing capacity of a single-layer cutting structure is limited and cannot meet the high load requirements, in a preferred solution, there are multiple second cutting teeth arranged sequentially along the circumference of the cutting ring. Each second cutting tooth arranged sequentially along the circumference of the cutting ring is called a second cutting tooth group. There are at least two cutting discs arranged vertically. The cutting ring is provided with at least two second cutting tooth groups arranged vertically. Each second cutting tooth group and each cutting disc are arranged alternately in the vertical direction.

[0015] As an improvement, each of the second cutting teeth is integral with the main body of the cutting ring. This integrated structure enhances overall strength, reduces maintenance costs, and ensures long-term stable operation. To facilitate processing and improve cutting performance, the inner circumferential wall of the cutting ring has multiple radially protruding edges that extend vertically. These edges are arranged sequentially at intervals along the circumference of the cutting ring, and the second cutting teeth are formed on the inner edge of these protruding edges.

[0016] To further improve the cutting effect on fibrous waste materials, at least some of the first cutting teeth of the uppermost cutting disc in each of the cutting discs are inclined downward from the inside to the outside.

[0017] To achieve stable and reliable installation of the cutting ring, the cutting ring assembly further includes an upper washer and a lower washer stacked sequentially. The inner circumferential wall of the grinding chamber has a first annular mounting groove for placing the upper and lower washers. At least one of the upper and lower washers has a second annular mounting groove on its inner circumferential wall for accommodating the cutting ring. The inner wall of the second annular mounting groove and at least one of the upper and lower edges of the cutting ring have a first positioning slot and a first positioning block that cooperate with each other. The first positioning block can be engaged in the first positioning slot to restrict the cutting ring from rotating circumferentially relative to the upper or lower washer. Through the cooperation of the upper and lower washers, the corresponding positioning slots, and the positioning blocks, the cutting ring assembly is precisely installed and fixed, preventing circumferential rotation and improving equipment safety.

[0018] To simplify the installation process of the cutting ring assembly on the grinding chamber, the grinding chamber includes an upper chamber and a lower chamber that are interlocked. The lower chamber has a first annular mounting groove on its inner peripheral wall. After the upper and lower washers are placed in the first annular mounting groove, the upper chamber applies downward pressure to the upper and lower washers. The outer peripheral walls of the upper and lower washers each have a second positioning groove. The inner wall of the first annular mounting groove has a second positioning block. The second positioning block can be engaged in the second positioning groove to restrict the upper and lower washers from rotating circumferentially relative to the grinding chamber.

[0019] To further improve the cutting effect on fibrous waste materials, the inner peripheral wall of the lower washer is also provided with third cutting teeth that are arranged in sequence along the circumference and protrude inward, and each of the third cutting teeth is located below the first cutting tooth of the lowermost cutting disc.

[0020] Compared with existing technologies, the advantages of this invention are as follows: This invention adds a fixed cutting ring with a second cutting tooth around the cutting disc. When the cutting disc rotates at high speed, the first cutting tooth on its outer circumference and the second cutting tooth on the inner wall of the cutting ring can form an effective cutting engagement, generating multi-directional shearing force. This effectively cuts fibrous waste materials passing downwards through the gap between the two, ensuring the cutting effect. Furthermore, the three-dimensional cutting structure formed by the double cutting teeth (the first cutting tooth on the cutting disc and the second cutting tooth on the cutting ring) significantly extends the material residence time, allowing the material to be fully cut and crushed, effectively reducing the risk of sewer pipe blockage. Attached Figure Description

[0021] Figure 1 This is a sectional perspective view of the cutting device of the garbage disposer according to an embodiment of the present utility model, with the cutting surface passing through the axis of the drive motor;

[0022] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0023] Figure 3 This is a partial cross-sectional view of the cutting device of the garbage disposer according to an embodiment of the present utility model, with the cutting surface passing through the axis of the drive motor;

[0024] Figure 4 A three-dimensional structural diagram of the cutting device of the garbage disposer according to an embodiment of the present utility model, omitting the upper cavity;

[0025] Figure 5 for Figure 4 A schematic diagram of the three-dimensional structure after omitting the cutter head assembly;

[0026] Figure 6 for Figure 5 An exploded view of the portion shown;

[0027] Figure 7 This is a three-dimensional structural diagram of the cutting ring according to an embodiment of the present utility model;

[0028] Figure 8 This is a three-dimensional structural diagram of the upper washer according to an embodiment of the present utility model;

[0029] Figure 9 This is a three-dimensional structural diagram of the cutter head assembly according to an embodiment of the present utility model. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0032] Figures 1-9 This illustration shows a preferred embodiment of the cutting device of the garbage disposal unit of this invention. The cutting device of this embodiment includes a grinding chamber 10, a blade assembly 2 disposed within the grinding chamber 10, a cutting disc assembly, and a cutting ring assembly. The grinding chamber 10 includes an upper chamber 11 and a lower chamber 12 that are interlocked. The bottom of the upper chamber 11 is open, and the top of the lower chamber 12 is open. The upper chamber 11 and the lower chamber 12 are sealed by a sealing ring 13 after being interlocked. A drive motor 3 is located below the lower chamber 12. The output shaft of the drive motor 3 passes through the bottom wall of the lower chamber 12 and extends into the grinding chamber 10, connecting to the aforementioned blade assembly 2 and driving the blade assembly 2 to rotate. The blade assembly 2 includes a blade 20 and a cutter head 200 disposed on top of the blade 20, etc., for crushing garbage materials. A cutting disc assembly is coaxially fixed below the blade 20, and the cutting disc assembly can rotate with the blade 20. The cutting disc assembly can consist of a single cutting disc 21 or at least two cutting discs 21 spaced apart in a vertical direction. Multiple first cutting teeth 211 are evenly distributed along the outer periphery of the cutting disc 21. These first cutting teeth 211 can be triangular serrations, and are substantially on the same plane as the main body of the cutting disc 21. Alternatively, they can be inclined upwards or downwards relative to the main body of the cutting disc 21. This embodiment shows a cutting disc assembly with three cutting discs 21 arranged vertically at intervals.

[0033] See Figures 1-3 The cutting ring assembly is located on the periphery of the cutting disc assembly, specifically fixed relative to the side wall of the grinding chamber 10. The cutting ring assembly includes a cutting ring 4, an upper washer 41, and a lower washer 42. The cutting ring 4 is a ring with equal upper and lower diameters. The inner circumferential wall of the cutting ring 4 is provided with a second cutting tooth 401 extending radially inward. The second cutting tooth 401 is a vertically extending triangular tooth, with its top forming a downward-sloping cutting bevel 4010 from the outside to the inside, and its bottom forming a horizontally extending cutting surface.

[0034] See Figure 5 and Figure 6The lower cavity 12 of the grinding chamber 10 has a first annular mounting groove 120 on its inner peripheral wall. The first annular mounting groove 120 extends upward to the top surface of the lower cavity 12, thus forming an opening at the top. The upper washer 41 and the lower washer 42 of the cutting ring assembly are stacked one on top of the other in the first annular mounting groove 120. After the upper cavity 11 is fastened onto the lower cavity 12, the upper washer 41 and the lower washer 42 are pressed downward. To prevent the cutting ring assembly from rotating circumferentially, the outer peripheral walls of the upper and lower washers 42 are each provided with a vertically extending second positioning groove 44. The inner wall of the first annular mounting groove 120 has a second positioning block 121 that protrudes radially outward. The second positioning block 121 is a matching vertically extending protrusion that can be engaged in the second positioning groove 44 to restrict the circumferential rotation of the upper washer 41 and the lower washer 42.

[0035] In this embodiment, the inner peripheral walls of the upper washer 41 and the lower washer 42 are further provided with second annular mounting grooves 43 for accommodating the cutting ring 4. The second annular mounting grooves 43 on the inner peripheral walls of the upper washer 41 and the lower washer 42 are vertically opposite each other, thereby forming a complete second annular cutting groove. The upper edge and / or lower edge of the cutting ring 4 have a first positioning slot 402. The inner wall of the second annular mounting groove 43 has a first positioning block 411 protruding outward at a position corresponding to the first positioning slot 402. The first positioning block 411 can be inserted into the first positioning slot 402 of the cutting ring 4 to restrict the cutting ring 4 from rotating circumferentially relative to the upper washer 41 or the lower washer 42.

[0036] In some embodiments, both the cutting disc 21 and the cutting ring 4 may have one (or a group) second cutting teeth 401. However, considering that the processing capacity of a single-layer cutting structure is limited and cannot meet high-load requirements, in a preferred embodiment, to improve the high-load processing capacity, a multi-layer cutting design is adopted. Specifically, the cutting disc 21 is configured as an upper, middle, and lower layer, all of which rotate synchronously with the cutter disc 20. The inner wall of the cutting ring 4 is provided with two sets of upper and lower second cutting teeth groups. Each second cutting tooth 401 arranged sequentially in the circumferential direction of the cutting ring 4 is referred to as a second cutting tooth group. The upper and lower sets of second cutting teeth groups and the first cutting teeth 211 of the three-layer cutting disc 21 are arranged alternately in the vertical direction. Specifically, each first cutting tooth 211 of the upper cutting disc 21 is located above each second cutting tooth 401 of the upper second cutting tooth group, and each first cutting tooth 211 of the middle cutting disc 21 is located between each second cutting tooth 401 of the upper second cutting tooth group and each second cutting tooth 401 of the lower second cutting tooth group. Each of the second cutting teeth 401 of the cutting ring 4 is integrally designed with the main body of the cutting ring 4 to increase structural strength. Specifically, the inner wall of the cutting ring 4 is first machined with a radially inwardly protruding vertical convex edge 40. The inner edge of this convex edge 40 is directly machined to form two second cutting teeth 401 spaced a certain distance apart, thereby ensuring the overall strength of the cutting ring 4, reducing the number of stamping processes, and lowering costs. After the cutting ring assembly is installed in the grinding cavity 10, the first cutting tooth 211 corresponding to the cutting disc 21 is located above the cutting slope 4010 of the corresponding second cutting tooth 401 of the cutting ring 4. In order to cooperate with the lowermost cutting disc 21, a ring of third cutting teeth 421 arranged in sequence in the circumferential direction is added to the lower part of the inner peripheral wall of the lower washer 42. Each third cutting tooth 421 is located below the first cutting tooth 211 of the lowermost cutting disc 21, forming a three-stage cutting process.

[0037] The size of the cutting ring 4 and the number of second cutting teeth 401 in each group of the cutting ring 401 in this embodiment can be designed according to the size of the grinding chamber 10. For a conventionally sized garbage disposal unit, the number of teeth in each group of second cutting teeth 401 of the cutting ring 4 can be designed to be around 72.

[0038] In this embodiment, the first cutting tooth 211 on the cutting disc 21 and the adjacent second cutting tooth 401 on the cutting ring 4 partially overlap in the vertical direction, maintaining a certain axial gap between them in the vertical direction. This axial gap is denoted as the first distance, and the value of the first distance ranges from 1mm ≤ first distance ≤ 10mm. The aforementioned first distance can refer to the distance between the first cutting tooth 211 and the adjacent second cutting tooth 401 above it, such as... Figure 3 The L1 shown is preferably 5mm; it can also refer to the distance between the first cutting tooth 211 and the adjacent second cutting tooth 401 below it, such as... Figure 3The L2 shown in the figure has the following preferred value range: 1mm≤L2≤7mm, with the most preferred value being 2mm.

[0039] In some embodiments, to further improve the cutting effect on fibrous waste materials, at least a portion of the first cutting teeth 211 of the uppermost cutting disc 21 are inclined downwards from the inside to the outside. In a preferred embodiment, a plurality of downwardly inclined first cutting teeth 211 are arranged circumferentially on the uppermost cutting disc 21. Six first cutting teeth 211 may be provided, evenly arranged circumferentially. See details... Figure 9 The first cutting teeth 211 on the other cutting discs 21 are all horizontally extending flat teeth.

[0040] When the cutting disc 21 rotates with the blade disc 20, the first cutting tooth 211 of the rotating cutting disc 21 forms a relative shearing motion with the second cutting tooth 401 on the fixed cutting ring 4, generating a multi-directional cutting force on fibrous waste. Due to the design that the first cutting tooth 211 and the second cutting tooth 401 partially overlap in the vertical direction and retain a gap, the cutting coordination is enhanced, and the cut waste material can fall smoothly.

[0041] In this embodiment, a fixed cutting ring 4 with a second cutting tooth 401 is added around the cutting disc 21. When the cutting disc 21 rotates at high speed, the first cutting tooth 211 on its outer periphery and the second cutting tooth 401 on the inner wall of the fixed ring can form an effective cutting engagement, generating multi-directional shearing force, which can effectively cut fibrous waste materials passing downward through the gap between them, ensuring the cutting effect. On the other hand, the three-dimensional cutting structure formed by the double cutting teeth (the first cutting tooth 211 on the cutting disc 21 and the second cutting tooth 401 on the cutting ring 4) can significantly extend the material residence time, so that the material is fully cut and crushed, effectively reducing the risk of sewer pipe blockage.

Claims

1. A cutting device for a garbage disposal unit, comprising: Grinding chamber (10); The cutter head assembly (2) is located inside the grinding chamber (10) and includes a cutter head (20), which can be driven to rotate by a drive motor (3); The cutting disc (21) is located below the cutter disc (20) and can rotate with the cutter disc (20). The outer periphery of the cutting disc (21) has a first cutting tooth (211). The feature is that it further includes a cutting ring assembly located inside the grinding cavity (10) and fixed relative to the grinding cavity (10). The cutting ring assembly includes a cutting ring (4) located around the cutting disk (21). The inner peripheral wall of the cutting ring (4) has a second cutting tooth (401) extending radially inward. During the rotation of the cutting disk (21) with the cutter disk (20), the first cutting tooth (211) and the second cutting tooth (401) form a cutting engagement.

2. The cutting device of the garbage disposer according to claim 1, characterized in that: The first cutting tooth (211) and the second cutting tooth (401) partially overlap in the vertical direction and have a gap in the vertical direction.

3. The cutting device of the garbage disposer according to claim 2, characterized in that: The distance between the first cutting tooth (211) and the adjacent second cutting tooth (401) in the vertical direction is called the first distance. The value range of the first distance is: 1mm ≤ first distance ≤ 10mm.

4. The cutting device of the garbage disposer according to claim 1, characterized in that: The second cutting tooth (401) is a vertically extending triangular tooth with a cutting bevel (4010) at the top that slopes downward from the outside to the inside. The first cutting tooth (211) is located above the cutting bevel (4010) of the second cutting tooth (401).

5. The cutting device of the garbage disposer according to claim 1, characterized in that: The cutting ring (4) has a plurality of second cutting teeth (401) arranged sequentially along the circumference. Each second cutting tooth (401) arranged sequentially along the circumference of the cutting ring (4) is called a second cutting tooth group. The cutting disk (21) has at least two arranged vertically. The cutting ring (4) is provided with at least two second cutting tooth groups arranged vertically. Each second cutting tooth group and each cutting disk (21) are arranged alternately in the vertical direction.

6. The cutting device of the garbage disposer according to claim 5, characterized in that: Each of the second cutting teeth (401) and the main body of the cutting ring (4) are integral parts. The inner peripheral wall of the cutting ring (4) has a convex edge (40) that protrudes radially inward and extends vertically. There are multiple convex edges (40), and each convex edge (40) is arranged sequentially at intervals along the circumference of the cutting ring (4). The second cutting teeth (401) are formed on the inner edge of the convex edge (40).

7. The cutting device of the garbage disposer according to claim 5, characterized in that: At least the uppermost cutting disc (21) of each of the cutting discs (21) has at least a portion of its first cutting teeth (211) that are inclined downward from the inside to the outside.

8. The cutting device of the garbage disposer according to any one of claims 1 to 7, characterized in that: The cutting ring assembly further includes an upper washer (41) and a lower washer (42) stacked sequentially. The inner peripheral wall of the grinding cavity (10) has a first annular mounting groove (120) for placing the upper washer (41) and the lower washer (42). At least one of the inner peripheral walls of the upper washer (41) and the lower washer (42) is provided with a second annular mounting groove (43) for accommodating the cutting ring (4). The inner wall of the second annular mounting groove (43) and at least one of the upper and lower edges of the cutting ring (4) have a first positioning slot (402) and a first positioning block (411) that cooperate with each other. The first positioning block (411) can be inserted into the first positioning slot (402) to restrict the cutting ring (4) from rotating circumferentially relative to the upper washer (41) or the lower washer (42).

9. The cutting device of the garbage disposer according to claim 8, characterized in that: The grinding cavity (10) includes an upper cavity (11) and a lower cavity (12) that are fastened together. The lower cavity (12) has a first annular mounting groove (120) formed on its inner peripheral wall. After the upper washer (41) and lower washer (42) are placed in the first annular mounting groove (120), the upper cavity (11) applies downward pressure to the upper washer (41) and lower washer (42). The outer peripheral walls of the upper washer (41) and lower washer (42) each have a second positioning groove (44). The inner wall of the first annular mounting groove (120) has a second positioning block (121). The second positioning block (121) can be inserted into the second positioning groove (44) to restrict the upper washer (41) and lower washer (42) from rotating circumferentially relative to the grinding cavity (10).

10. The cutting device of the garbage disposer according to claim 8, characterized in that: The inner circumferential wall of the lower washer (42) also has third cutting teeth (421) arranged in sequence along the circumference and protruding inward, and each of the third cutting teeth (421) is located below the first cutting tooth (211) of the lowermost cutting disc (21).

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