Grinding system for food waste disposers

Abstract

The present invention provides a grinding system for a food waste disposer, and belongs to the technical field of food waste disposers. It solves the problem of insufficient treatment of food waste and poor effect. It includes a fixed ring, a grinding disc and a grinding ring from top to bottom, a primary grinding structure is provided between the fixed ring and the grinding disc, a secondary grinding structure is provided between the grinding disc and the grinding ring, at least one main crushing piece arranged close to the inner wall of the fixed ring is fixed on the upper surface of the grinding disc, at least one crushing sheet is vertically fixed on the grinding disc at a position close to the grinding ring, the crushing sheet is in sheet shape and passes through the grinding disc, and the parts of the crushing sheet located above and below the grinding disc are respectively an upper sheet body and a lower sheet body, the upper sheet body has an upper working part close to the inner wall of the fixed ring, and the lower sheet body has a grinding part extending to the bottom of the grinding ring and can cooperate with the grinding ring for grinding. It has the advantages of good treatment effect, simple structure, and convenient installation.

Description

Technical Field

[0001] The invention belongs to the technical field of food waste disposers, and relates to a food waste disposer, and in particular to a grinding system of a food waste disposer. Background Art

[0002] Food waste disposers are common auxiliary equipment in modern kitchens. After the garbage is collected and processed in the food waste disposer, it is discharged into the sewer. The existing food waste disposer structure generally includes a fixed ring, a grinding disc and a grinding ring arranged from top to bottom. The grinding disc is fixed with a crushing hammer arranged near the inner wall of the fixed ring. The primary grinding structure is formed by a plurality of grinding teeth one distributed circumferentially at the lower end of the fixed ring and a plurality of grinding teeth two distributed circumferentially on the outer side of the grinding disc. The secondary grinding structure is formed by a plurality of grinding teeth two and a plurality of grinding teeth three located on the inner side of the grinding ring. In the process of high-speed rotation of the grinding disc relative to the fixed ring and the grinding ring, the food waste is thrown to the inner wall of the fixed ring by centrifugal force and crushed by the action of the crushing hammer and the inner wall of the fixed ring. The crushed food waste is then ground by the primary grinding structure and the secondary grinding structure in turn before being discharged.

[0003] However, it is found in actual use that when bone fragments are mixed in the food waste, it is difficult to fully crush it only by relying on the pulverizing hammer and the inner wall of the fixed ring, which makes subsequent grinding difficult and the effect is relatively poor. In view of the poor processing effect of the food waste disposer, the conventional method of those skilled in the art is to add auxiliary crushing parts on the basis of the pulverizing hammer as the main crushing part, such as a kitchen waste disposer grinding disc disclosed in patent application number 201822065185.0, a grinding tool and food waste disposer disclosed in patent application number 201811074681.0, and a crushing device for a kitchen waste disposer disclosed in patent application number 201110125310.2. Of course, another way is to change the material of each grinding tooth or pulverizing hammer to make it harder to improve the processing effect of the food waste disposer. Summary of the invention

[0004] The purpose of the present invention is to address the above-mentioned problems existing in the prior art and to propose a grinding system for a food waste disposer, thereby solving the problem of insufficient and poor treatment of food waste.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] The grinding system of the food waste disposer includes, from top to bottom, a fixed ring, a grinding disc and a grinding ring, a primary grinding structure is provided between the fixed ring and the grinding disc, a secondary grinding structure is provided between the grinding disc and the grinding ring, at least one main crushing member arranged close to the inner wall of the fixed ring is fixed on the upper surface of the grinding disc, at least one crushing sheet is vertically fixed on the grinding disc at a position close to the grinding ring, and it is characterized in that the crushing sheet is in sheet shape and passes through the grinding disc, and the parts of the crushing sheet located above and below the grinding disc are respectively an upper sheet body and a lower sheet body, the upper sheet body has an upper working part close to the inner wall of the fixed ring, and the lower sheet body has a grinding part extending to the bottom of the grinding ring and capable of cooperating with the grinding ring for grinding.

[0007] The food waste disposer is connected to the bottom of the water tank, the fixed ring and the grinding ring remain stationary in the food waste disposer, and the grinding disc rotates at a high speed accordingly. During operation, the food waste is discharged into the food waste disposer together with the sewage, and the food waste falls on the grinding disc and is thrown to the inner wall of the fixed ring under the action of centrifugal force. The food waste is crushed by the action of the main crushing part and the inner wall of the fixed ring. The side wall of the upper sheet body away from the center line of the grinding disc is close to the inner wall of the fixed ring, so that a space that can squeeze and crush the food waste is formed between the side wall of the upper sheet body and the inner wall of the fixed ring, which plays a role in auxiliary crushing. The crushed food waste flows downward with the water, and is first ground by the primary grinding structure, and then ground by the secondary grinding structure. The food waste after the secondary grinding continues to flow downward with the water, and finally grinds the food waste after the secondary grinding again by the rotation of the grinding part relative to the grinding ring. During the high-speed rotation of the grinding disc, the lower sheet body can quickly stir the water in the food waste disposer to form a strong pressure, which plays a role in boosting and preventing blockage.

[0008] The grinding system of the food waste disposer is provided with a grinding part on the lower plate, and the cooperation of the grinding part and the grinding ring can form another grinding structure after the secondary grinding structure, so that the food waste can be fully ground. In addition, while the main crushing piece is used to crush the food waste, the auxiliary crushing of the upper plate is used to make the food waste, especially the bone fragments, be fully crushed for better subsequent grinding. With the improvement of the crushing effect and the grinding effect, the grinding system of the food waste disposer has a better treatment effect on food waste. In addition, the auxiliary crushing and further grinding after the secondary grinding structure are achieved by the crushing sheet, and the crushing sheet has a simple sheet structure, so the structure is also simpler and the production cost is lower.

[0009] In the above-mentioned grinding system of the food waste disposer, the upper surface of the grinding part is a plane.

[0010] The upper surface of the grinding part is a plane, and the contact surface with the food waste is large. During the rotation of the grinding part relative to the grinding ring, the grinding effect on the food waste can be further improved.

[0011] In the above-mentioned grinding system of the food waste disposer, the grinding part is in a strip shape, and the thickness of the grinding part is the same as the thickness of the lower sheet.

[0012] The thickness of the grinding part is the same as that of the lower sheet body, so that the grinding part and the lower sheet body have better integrity and the grinding is more stable. In addition, such a structure is more conducive to the production of crushed sheets, and can be directly processed by wire cutting.

[0013] In the grinding system of the above-mentioned food waste disposer, the upper part of the upper plate body has a plate-like protrusion, and the plate-like protrusion has a convex tip facing the center line of the grinding disc.

[0014] During the rotation of the grinding disc, the convex tip can cut or squeeze larger food waste to a certain extent, further improving the processing effect of the grinding system on food waste.

[0015] In the grinding system of the above-mentioned food waste disposer, a mounting straight groove is provided on the grinding disc, and a recess is provided between the convex tip and the upper plate body near the center line of the grinding disc to allow the upper plate body to pass through the mounting straight groove from below, and a right-angle notch is formed between the position of the sheet-like protrusion facing away from the convex tip and the upper surface of the upper plate body, and the upper surface of the lower plate body abuts against the grinding disc.

[0016] In the above-mentioned grinding system of the food waste disposer, the crushing piece has a slot in the middle part away from the center line of the grinding disk, the grinding disk is inserted into the slot, and the distance between the side wall of the slot in the vertical direction and the side wall of the crushing piece close to the center line of the grinding disk is less than the length of the installation straight slot.

[0017] During assembly, the crushed sheet is first passed through the installation straight groove at an angle where the convex tip is tilted upward. Due to the right-angle notch and the recess, the upper part of the crushed sheet can smoothly pass through the installation straight groove to serve as the upper sheet. After the upper part of the crushed sheet passes through the installation straight groove, the corresponding position on the grinding disc is inserted into the slot, so that the lower part of the crushed sheet is blocked under the grinding disc as the lower sheet. This method of fixing makes it easier to use the crushed sheet to improve the processing effect while making assembly more convenient and processing more convenient.

[0018] In the above-mentioned grinding system of the food waste disposer, a side wall of the crushing plate close to the center line of the grinding disk abuts against a side wall of the installation straight groove, the lower surface of the grinding disk is recessed upward, and a side wall of the lower plate body away from the center line of the grinding disk abuts against the inner wall of the grinding disk at the recess.

[0019] One side wall of the crushing piece close to the center line of the grinding disk abuts against one side wall of the installation straight groove, and one side wall of the lower piece body away from the center line of the grinding disk abuts against the inner wall of the grinding disk at the recess. In this way, the entire crushing piece can remain fixed after being installed on the grinding disk, thereby ensuring that the convex tip on the upper piece body can be used to assist in crushing food waste during the rotation of the grinding disk, and the grinding part on the lower piece body can be used to further grind food waste, so as to improve the processing effect of the food waste disposer.

[0020] In the above-mentioned grinding system of the food waste disposer, there are two crushing plates and the two crushing plates are symmetrically arranged about the center line of the grinding disk. The upper working part is a side wall of the upper plate body away from the center line of the grinding disk, and the lower surface of the lower plate body is an inclined surface, and the highest point of the inclined surface is close to the center line of the grinding disk.

[0021] The inclined surface makes the longitudinal cross-sectional area of ​​the lower plate gradually increase in the direction away from the center of the disc. When the grinding disc rotates, the water can be stirred more quickly through the lower plate, so as to achieve the effect of self-cleaning, pressurizing and preventing blockage inside the food waste container.

[0022] In the above-mentioned grinding system of the food waste disposer, the lower surface of the grinding part is an inclined surface connected to the lower surface of the lower plate body and having the same inclination angle, and the side wall of the grinding part away from the center line of the grinding disc and the lower surface of the grinding part form an arc transition, thereby enhancing the mechanical strength between the grinding part and the lower plate body and improving reliability.

[0023] In the grinding system of the above-mentioned food waste disposer, the lower end of the fixed ring is provided with a plurality of grinding teeth one along the circumferential direction, the outer side of the grinding disc is provided with a plurality of grinding teeth two along the circumferential direction, the inner side of the grinding ring is provided with a plurality of grinding teeth three along the circumferential direction, the primary grinding structure includes the lower surface of each grinding tooth one and the upper surface of each grinding tooth two, the secondary grinding structure includes the lower surface of each grinding tooth two and the upper surface of each grinding tooth three, and a leak is provided on the side of the fixed ring between each two adjacent grinding teeth one.

[0024] The food waste crushed by the main crushing element leaks downward from the gap. During the rapid rotation of each grinding tooth 2 on the grinding disc relative to each grinding tooth 1 on the fixed ring, the primary grinding structure formed by the lower surface of each grinding tooth and the upper surface of each grinding tooth 2 will perform primary grinding on the crushed food waste. Then, the food waste after primary grinding falls downward from between each grinding tooth 2, and then the secondary grinding structure formed by the lower surface of each grinding tooth 2 and the upper surface of each grinding tooth 3 performs secondary grinding on the food waste.

[0025] Compared with the prior art, the food waste treatment method has the following advantages:

[0026] 1. On the basis of the main crushing parts, the auxiliary use of the upper sheet body improves the crushing effect. At the same time, the grinding part and the grinding disc are used to further improve the grinding effect after the secondary grinding structure. By improving the crushing effect and grinding effect, the food waste has a better treatment effect;

[0027] 2. The flaky protrusions on the upper sheet body have a convex tip facing the center line of the grinding disc, which can cut or squeeze the food waste to a certain extent, further improving the processing effect of the grinding system on food waste;

[0028] 3. The lower plate can quickly stir the water when the grinding disc rotates, which plays the role of pressurization, anti-blocking and internal self-cleaning;

[0029] 4. Auxiliary crushing, further grinding after the secondary grinding structure and pressurization and anti-blocking are all integrated on the crushing piece, so the structure is simpler and the production cost is lower;

[0030] 5. Assembly is more convenient, and processing is also more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a partial cross-sectional schematic diagram of a food waste disposer.

[0032] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0033] Figure 3 It is a schematic diagram of the interior of the upper housing.

[0034] Figure 4 is an exploded view of the grinding system of this food waste disposer.

[0035] Figure 5 This is a diagram of the relationship between the crushing piece and the grinding disc during initial assembly.

[0036] In the figure, 1, fixing ring; 1a, grinding tooth one; 1b, leaking gap; 1c, convex part; 2, grinding disc; 2a, mounting straight groove; 2b, grinding tooth two; 3, grinding ring; 3a, grinding tooth three; 4, main crushing part; 5, crushing piece; 5a, upper sheet body; 5a1, sheet-like protrusion; 5a11, convex tip; 5a2, giving way recess; 5a3, right-angle notch; 5a4, upper working part; 5b, lower sheet body; 5b1, grinding part; 5c, card slot; 6, upper shell; 6a, upper cover; 6a1, inlet; 6b, base; 6b1, outlet; 7, driving rod; 8, gasket; 9, pressing ring. DETAILED DESCRIPTION

[0037] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0038] like Figure 1 and Figure 3 As shown, the food waste disposer comprises an upper shell 6 with an inner cavity, an inlet 6a1 is provided at the upper end of the upper shell 6, an outlet 6b1 is provided at the side of the lower end of the upper shell 6, and a grinding system is provided in the inner cavity of the upper shell 6. The grinding system comprises a fixed ring 1, a grinding disc 2 and a grinding ring 3 from top to bottom, the fixed ring 1 and the grinding ring 3 remain stationary in the upper shell 6, the grinding disc 2 can rotate relative to the upper shell 6, a driving rod 7 penetrates into the upper shell 6 from the bottom, and the center of the grinding disc 2 is fixed to the upper end of the driving rod 7. The lower end of the upper shell 6 will be connected to the lower shell, a motor is fixed in the lower shell, and the driving rod 7 is fixed to the output shaft of the motor.

[0039] like Figure 1 As shown, the upper shell 6 specifically includes a base 6b with an opening at the upper end and an upper cover 6a fixed to the upper end of the base 6b by fasteners. An annular seat is provided in the base 6b at the outlet 6b1, and the grinding disc 2 abuts on the annular seat. A gasket 8 is provided between the outer edge of the upper surface of the grinding disc 2 and the outer edge of the lower surface of the fixed ring 1. The inner diameter of the gasket 8 is larger than the outer diameter of the grinding disc 2, and the grinding disc 2 is located on the inner side of the gasket 8. A pressing ring 9 is provided at the opening of the base 6b, and the pressing ring 9 is pressed on the outer edge of the upper surface of the fixed ring 1, and the upper cover 6a abuts on the pressing ring 9. During assembly, the grinding ring 3 is first placed on the annular seat, and then the grinding disc 2 is placed in the base 6b and fixed to the upper end of the driving rod 7, and then the gasket 8 is placed in the base 6b and abuts on the outer edge of the upper surface of the grinding ring 3, and then the fixed ring 1 is placed in the base 6b, and the outer edge of the lower surface of the fixed ring 1 abuts on the gasket 8. The pressing ring 9 is placed in and pressed against the outer edge of the upper surface of the fixing ring 1, and finally the upper cover 6a is fixed to the upper end of the base 6b by fasteners, so that the upper cover 6a presses the pressing ring 9 downward. In this way, the fixing seat and the grinding ring 3 are fixed in the upper housing 6 and remain motionless, while the grinding disc 2 can be driven by the driving rod 7 to rotate relative to the fixing ring 1 and the grinding ring 3.

[0040] like Figure 1 , Figure 2 and Figure 3As shown, at least one main crushing piece 4 arranged near the inner wall of the fixed ring 1 is fixed on the upper surface of the grinding disc 2. In this embodiment, the main crushing piece 4 is a crushing hammer commonly used in the prior art, and the number of the main crushing pieces 4 is two. A primary grinding structure is provided between the fixed ring 1 and the grinding disc 2, and a secondary grinding structure is provided between the grinding disc 2 and the grinding ring 3. Among them, a plurality of grinding teeth 1 1a are provided along the circumferential direction at the lower end of the fixed ring 1, a plurality of grinding teeth 2 2b are provided along the circumferential direction on the outer side of the grinding disc 2, and a plurality of grinding teeth 3 3a are provided along the circumferential direction on the inner side of the grinding ring 3. The primary grinding structure includes the lower surface of each grinding tooth 1 1a and the upper surface of each grinding tooth 2 2b, and the secondary grinding structure includes the lower surface of each grinding tooth 2 2b and the upper surface of each grinding tooth 3 3a. A gap 1b is provided between each adjacent grinding tooth 1 1a at the side of the lower end of the fixed ring 1, and there is a gap between each grinding tooth 1 1a and each grinding tooth 2 2b, and there is a gap between each grinding tooth 2 2b and each grinding tooth 3 3a. The inner wall of the fixing ring 1 is also provided with a plurality of protrusions 1c with sharp corners.

[0041] The grinding disc 2 can be an integral structure or a split structure. When the grinding disc 2 is a split structure, the grinding disc 2 includes a disc body and an outer gear ring located outside the disc body, and the disc body and the outer gear ring are fixedly connected to form an integral structure by welding.

[0042] like Figure 1 , Figure 3 and Figure 4 As shown, at least one crushing sheet 5 is vertically fixed on the grinding disc 2 at a position close to the grinding ring 3. In this embodiment, the number of crushing sheets 5 is two, and the two crushing sheets 5 are symmetrically distributed about the center line of the grinding disc 2, and the two crushing sheets 5 are spaced apart from the two main crushing parts 4. The crushing sheet 5 is in the form of a sheet and passes through the grinding disc 2. The part of the crushing sheet 5 located above the grinding disc 2 is an upper sheet body 5a, and the upper sheet body 5a has an upper working part 5a4 close to the inner wall of the fixed ring 1. The upper working part 5a4 is specifically a side wall of the upper sheet body 5a away from the center line of the grinding disc 2, and a space for squeezing and crushing food waste is formed between the upper working part 5a4 and the inner wall of the fixed ring 1. The upper part of the upper sheet body 5a has a sheet-shaped protrusion 5a1, and the sheet-shaped protrusion 5a1 has a convex tip 5b11 facing the center line of the grinding disc 2.

[0043] like Figure 1 and Figure 4As shown, the part of the crushing sheet 5 located below the grinding disc 2 is the lower sheet 5b, and the lower sheet 5b has a grinding portion 5b1 extending to the bottom of the grinding ring 3 and capable of cooperating with the lower surface of each grinding tooth 3a on the grinding ring 3 for grinding. The grinding portion 5b1 is in a strip shape, and the thickness of the grinding portion 5b1 is the same as that of the lower sheet 5b. The upper surface of the grinding portion 5b1 is a plane, and there is a gap between the upper surface of the grinding portion 5b1 and the plane where the lower surface of each grinding tooth 3a is located. The lower surface of the lower sheet 5b is an inclined surface, and the highest point of the inclined surface is close to the center line of the grinding disc 2. The lower surface of the grinding portion 5b1 is an inclined surface connected to the lower surface of the lower sheet 5b and having the same inclination angle, and the side wall of the grinding portion 5b1 away from the center line of the grinding disc 2 and the lower surface of the grinding portion 5b1 are in a circular arc transition.

[0044] like Figure 1 and Figure 4 As shown, specifically, the grinding disc 2 is provided with a straight installation groove 2a at the position corresponding to each crushing piece 5, and a recess 5a2 is provided between the convex tip 5b11 and the side of the upper sheet 5a close to the center line of the grinding disc 2, which allows the upper sheet 5a to pass through the straight installation groove 2a from below, and a right-angle notch 5a3 is formed between the side wall of the sheet-like protrusion 5a1 facing away from the convex tip 5b11 and the upper surface of the upper sheet 5a, and the upper surface of the lower sheet 5b abuts against the grinding disc 2. A slot 5c is provided in the middle of the side of the crushing piece 5 away from the center line of the grinding disc 2, and the grinding disc 2 is inserted into the slot 5c. In this embodiment, the distance between the side wall of the slot 5c in the vertical direction and the side wall of the crushing piece 5 close to the center line of the grinding disk 2 is less than the length of the installation straight slot 2a, and the side wall of the crushing piece 5 close to the center line of the grinding disk 2 abuts against the side wall of the installation straight slot 2a, the lower surface of the grinding disk 2 is recessed upward, and the side wall of the lower sheet 5b away from the center line of the grinding disk 2 abuts against the inner wall of the grinding disk 2 at the recess.

[0045] like Figure 5 As shown, during assembly, the crushed sheet 5 is first passed through the installation straight groove 2a at an angle where the convex tip 5b11 is tilted upward. Due to the existence of the right-angle notch 5a3 and the recess 5a2, the upper part of the crushed sheet 5 can smoothly pass through the installation straight groove 2a to serve as the upper sheet body 5a. After the upper part of the crushed sheet 5 passes through the installation straight groove 2a, the corresponding position on the grinding disc 2 is inserted into the slot 5c, so that the lower part of the crushed sheet 5 is blocked under the grinding disc 2 as the lower sheet body 5b. When the grinding disc 2 and the crushed sheet 5 are stuck together, the two can be further fixed together by welding. The fixing in this way makes it easier to assemble the crushed sheet 5 and the grinding disc 2, and also makes processing more convenient.

[0046] The food waste disposer is connected to the lower part of the sink drain outlet through the inlet 6a1 of the upper shell 6, and the food waste is flushed into the upper shell 6 when the sink is drained. Initially, the food waste first falls onto the grinding disc 2. During the rapid rotation of the grinding disc 2, the food waste is thrown to the inner wall of the fixed ring 1 by the centrifugal force, and the food waste is crushed by the action of the main crushing member 4 and the inner wall of the fixed ring 1 or the convex portion 1c. During the crushing process, the convex tip 5b11 on the sheet-like protrusion 5a1 can cut or squeeze the larger food waste to a certain extent, making the food waste easier to be crushed by the main crushing member 4. Moreover, since the upper sheet body 5a has an upper working part 5a4, the cooperation between the upper working part 5a4 and the inner wall of the fixed ring 1 can be used to assist in crushing during the rapid rotation of the grinding disc 2, so that the food waste can be crushed more thoroughly. In addition, the upper sheet body 5a is in the form of a sheet, and can also scrape off the food waste attached to the inner wall of the fixed ring 1 during the rotation process, so as to achieve the purpose of self-cleaning and ensuring that the food waste can be fully processed.

[0047] The crushed garbage food leaks downwards through the leaks 1b on the fixed ring 1 along with the sewage. During the rapid rotation of the grinding teeth 2b on the grinding disc 2 relative to the grinding teeth 1a on the fixed ring 1, the primary grinding structure formed by the lower surface of the grinding teeth 1a and the upper surface of the grinding teeth 2b will grind the crushed food garbage. Then, the food garbage after the primary grinding falls downwards from between the grinding teeth 2b, and then the secondary grinding structure formed by the lower surface of the grinding teeth 2b and the upper surface of the grinding teeth 3a performs secondary grinding on the food garbage. Finally, the food garbage after the secondary grinding falls downwards from between the grinding teeth 3a. Since the grinding part 5b1 on the lower sheet 5b is located below the grinding ring 3, and the grinding part 5b1 also rotates relative to the grinding ring 3 under the drive of the grinding disc 2, the fallen food garbage can be further ground by the cooperation between the grinding part 5b1 and the lower surface of the grinding teeth 3a. After the above steps, the food waste is fully processed, thereby greatly improving the processing effect.

[0048] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A grinding system for a food waste disposer, comprising, from top to bottom, a fixed ring (1), a grinding disc (2) and a grinding ring (3), wherein a primary grinding structure is provided between the fixed ring (1) and the grinding disc (2), and a secondary grinding structure is provided between the grinding disc (2) and the grinding ring (3), wherein at least one main crushing member (4) arranged close to the inner wall of the fixed ring (1) is fixed on the upper surface of the grinding disc (2), and at least one crushing sheet (5) is vertically fixed on the grinding disc (2) at a position close to the grinding ring (3), characterized in that: The crushing sheet (5) is in the form of a sheet and passes through the grinding disc (2). The parts of the crushing sheet (5) located above and below the grinding disc (2) are respectively an upper sheet body (5a) and a lower sheet body (5b). The upper sheet body (5a) has an upper working portion (5a4) close to the inner wall of the fixing ring (1). The lower sheet body (5b) has a grinding portion (5b1) extending to the bottom of the grinding ring (3) and capable of cooperating with the grinding ring (3) for grinding. The upper part of the upper sheet body (5a) has a sheet-shaped protrusion (5a1). The sheet-shaped protrusion (5a1) has a convex tip (5a11) facing the center line of the grinding disc (2). The grinding disc (2) is provided with a mounting straight groove (2a). The convex tip (5a11) is connected to the upper sheet body. A recess (5a2) is provided between the upper plate body (5a) and the center line of the grinding disc (2), which allows the upper plate body (5a) to pass through the installation straight groove (2a) from below. A right-angle notch (5a3) is formed between the plate-shaped protrusion (5a1) and the upper surface of the upper plate body (5a) at a position facing away from the protruding tip (5a11). The upper surface of the lower plate body (5b) abuts against the grinding disc (2). A slot (5c) is provided at the middle of the crushing plate (5) away from the center line of the grinding disc (2). The grinding disc (2) is inserted into the slot (5c). The distance between a side wall of the slot (5c) in the vertical direction and a side wall of the crushing plate (5) close to the center line of the grinding disc (2) is less than the length of the installation straight groove (2a).

2. The grinding system of the food waste disposer according to claim 1, characterized in that: The upper surface of the grinding portion (5b1) is a plane.

3. The grinding system of the food waste disposer according to claim 2, characterized in that: The grinding portion (5b1) is in a strip shape, and the thickness of the grinding portion (5b1) is the same as the thickness of the lower sheet body (5b).

4. The grinding system of the food waste disposer according to claim 1, characterized in that: A side wall of the crushing sheet (5) close to the center line of the grinding disc (2) abuts against a side wall of the mounting straight groove (2a); the lower surface of the grinding disc (2) is recessed upward; and a side wall of the lower sheet body (5b) away from the center line of the grinding disc (2) abuts against an inner side wall of the grinding disc (2) at the recessed portion.

5. The grinding system of the food waste disposer according to claim 4, characterized in that: The number of the crushing sheets (5) is two and the two crushing sheets (5) are symmetrically arranged about the center line of the grinding disc (2); the upper working portion (5a4) is a side wall of the upper sheet body (5a) away from the center line of the grinding disc (2); the lower surface of the lower sheet body (5b) is an inclined surface, and the highest point of the inclined surface is close to the center line of the grinding disc (2).

6. The grinding system of the food waste disposer according to claim 5, characterized in that: The lower surface of the grinding portion (5b1) is an inclined surface connected to the lower surface of the lower plate body (5b) and having the same inclination angle, and a side wall of the grinding portion (5b1) away from the center line of the grinding disc (2) forms an arc transition with the lower surface of the grinding portion (5b1).

7. The grinding system of the food waste disposer according to claim 1, characterized in that: The lower end of the fixed ring (1) is provided with a plurality of grinding teeth one (1a) along the circumferential direction, the outer side of the grinding disc (2) is provided with a plurality of grinding teeth two (2b) along the circumferential direction, and the inner side of the grinding ring (3) is provided with a plurality of grinding teeth three (3a) along the circumferential direction. The primary grinding structure includes the lower surface of each grinding tooth one (1a) and the upper surface of each grinding tooth two (2b), and the secondary grinding structure includes the lower surface of each grinding tooth two (2b) and the upper surface of each grinding tooth three (3a). The side of the fixed ring (1) is provided with a gap (1b) between each two adjacent grinding teeth one (1a).

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