Kitchen garbage treatment system and control method thereof

Abstract

According to the kitchen waste treatment system and the control method thereof, a kitchen waste treatment device comprises a connecting pipe, a switching valve and a sensor used for detecting the water level in a second grinding cavity, a first inlet of the connecting pipe communicates with a first water outlet, a second inlet of the connecting pipe communicates with a second water outlet, a water outlet of the connecting pipe communicates with a third feeding port, and the switching valve is arranged in the connecting pipe; the switching valve is switched between a first switching state and a second switching state according to the water level condition detected by the sensor, and when the switching valve is in the first switching state, the first inlet is communicated with the water outlet, and the second inlet is blocked from the water outlet; and when the switching valve is in the second switching state, the second inlet communicates with the water outlet, and communication between the first inlet and the water outlet is blocked. According to the kitchen garbage treatment system, the water outlet of the connecting pipe can only be communicated with the first inlet or the second inlet through the switching valve, so that the working independence of the two grinding cavities is ensured, mutual interference and conflict are avoided, the blockage phenomenon of drainage is not easy to occur, and the grinding effect is improved.

Description

Technical Field

[0001] The present invention relates to the field of garbage disposal, and in particular to a kitchen waste disposal system and a control method thereof. Background Art

[0002] With the implementation of the garbage sorting policy, the sales of classified trash cans and garbage disposers have increased significantly, and food waste disposers are also being purchased and used by more and more customers. Food waste is crushed and discharged directly into the sewer, bringing a certain degree of convenience to customers.

[0003] For example, the kitchen waste disposer disclosed in the utility model patent "A kitchen waste disposer with an anti-odor function" with patent application number CN201721771010.0 (authorization announcement number CN207959388U) has a grinding chamber provided at the top of the body, and a grinding disc provided with filter holes, a grinding hammer, and a grinding ring. This kitchen waste disposer has only one grinding chamber, and the kitchen waste is ground into fine particles by the grinding disc in the grinding chamber and discharged into the sewer. This kitchen waste disposer has a contradiction between the grinding fineness and the drainage speed. If the gap between the grinding disc and the grinding ring is controlled to be very small, although the grinding effect will be finer, on the one hand, the dynamic balance requirements of the grinding disc will be increased, and on the other hand, the drainage speed and grinding rate will be affected. If the gap between the grinding disc and the grinding ring is controlled to be large, it will directly lead to a deterioration in the grinding fineness, and large particles of kitchen waste entering the sewer will increase the risk of blockage.

[0004] If two grinding chambers are provided, if the waste processed by the two grinding assemblies is discharged at the same time, the sewer is likely to be blocked. Once the drainage is blocked, it will cause the user to be unable to use the food waste disposer normally or even to use the sink. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a kitchen waste treatment system that can improve the grinding effect and anti-blocking performance in response to the above-mentioned existing technical status.

[0006] The second technical problem to be solved by the present invention is to provide a control method for implementing the above-mentioned kitchen waste treatment system.

[0007] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a kitchen waste treatment system, including a water tank and a kitchen waste disposer connected to the water tank, characterized in that: the bottom of the water tank is provided with a feeding port and a drain port, the kitchen waste disposer has a first grinding chamber, a second grinding chamber and a forced discharge chamber, the first grinding chamber is provided with a first grinding assembly and has a first feeding port and a first drain port, the second grinding chamber is provided with a second grinding assembly and has a second feeding port and a second drain port, the forced discharge chamber is provided with a first pump wheel and has a third feeding port and a third drain port, the kitchen waste disposer also includes a connecting pipe, a switching valve and a sensor for detecting the water level in the second grinding chamber, the connecting pipe is a three-way pipe, having a first inlet, a second inlet and a water outlet, the first inlet of the connecting pipe is connected to the first drain outlet, the second inlet is connected to the second drain outlet, and the water outlet is connected to the third feed inlet, the switching valve is arranged in the connecting pipe, and the switching valve switches between a first switching state and a second switching state according to the water level detected by the sensor, when the switching valve is in the first switching state, the first inlet is connected to the water outlet and the connection between the second inlet and the water outlet is blocked; when the switching valve is in the second switching state, the second inlet is connected to the water outlet and the connection between the first inlet and the water outlet is blocked.

[0008] In order to enable the switching valve to switch between two states, the switching valve is rotated at the first inlet and is a disc with the same size as the inner diameter of the connecting pipe. When the disc rotates to be parallel to the cross-section of the connecting pipe, the switching valve is in the second switching state; otherwise, the switching valve is in the first switching state.

[0009] The first grinding assembly and the first pump wheel can each be driven by a motor, but in order to save cost and space, it is preferably further included a first motor that can drive the first grinding assembly and the first pump wheel to rotate synchronously, the first motor is installed between the first grinding chamber and the forced exhaust chamber, the first motor has a vertically arranged output shaft, the upper end of the output shaft extends into the first grinding chamber, the first grinding assembly is installed at the upper end of the output shaft, the lower end of the output shaft extends into the forced exhaust chamber, and the first pump wheel is installed at the lower end of the output shaft.

[0010] In order to improve the grinding effect of the first grinding assembly, the first grinding assembly includes a grinding ring, a first grinding disc and a grinding hammer for processing kitchen waste. The first grinding disc is installed at the upper end of the output shaft, and a second pump wheel is provided under the first grinding disc.

[0011] In order to improve the grinding effect of the second grinding assembly, the second grinding assembly includes a second grinding disc for grinding fine residues and a cutter disc for crushing the residues again, and the cutter disc is arranged below the second grinding disc.

[0012] Preferably, a boss is formed at the bottom of the second grinding chamber, and the second grinding assembly further includes an outer rotor, an inner rotor, and a second motor. The outer rotor is positioned above the boss, has a step corresponding to the boss, and a driven portion extending vertically above the step. The driven portion passes through the second grinding disc, and the cutter disc is mounted on the driven portion. A driven permanent magnet is embedded in the outer rotor, and the inner rotor is positioned below the boss. A driving permanent magnet is embedded in the inner rotor. The driving shaft of the second motor is connected to the inner rotor, thereby driving the second grinding disc and the cutter disc to rotate synchronously. In this way, the driving shaft and the driven portion are designed independently, and the second motor can drive the second grinding disc and the cutter disc to rotate synchronously without passing through the second grinding chamber, thereby ensuring the sealing of the second grinding chamber.

[0013] Preferably, the cutter disc includes a chassis, blades and blades. The chassis is vertically arranged and arranged on the outer periphery of the driven part of the outer rotor. There are at least two blades and they are distributed circumferentially on the outer peripheral surface of the chassis. Each blade basically extends along the axial direction of the chassis and twists in the same rotation direction, so that from a top-down perspective, all blades present a clockwise or counterclockwise rotation direction as a whole. The blades are arranged on both side surfaces of the blades.

[0014] In order to distinguish the positions of the feeding port and the drainage port and facilitate the downward flow of water, the bottom of the water tank has a step, the feeding port is arranged on the first horizontal plane above the step, and the drainage port is arranged on the second horizontal plane below the step.

[0015] In order to allow water to enter the first grinding chamber, the first grinding chamber has a water inlet, and water enters the water inlet through a water inlet solenoid valve.

[0016] The technical solution adopted by the present invention to solve the second technical problem is: a method for controlling a kitchen waste treatment system, characterized in that the control method is implemented by the kitchen waste treatment system as described above, comprising the following steps:

[0017] S1. Detecting the water level in the second grinding chamber through a sensor, and determining whether the second grinding chamber should be drained first based on the water level. If the second grinding chamber is drained first, proceed to step S21; otherwise, proceed to step S22;

[0018] S21: The switching valve is controlled to be in the second switching state. The first pump impeller and the second grinding assembly are in operation. The residue entering the second grinding chamber is crushed by the second grinding assembly and then enters the forced discharge chamber through the connecting pipe. The sewage passes through the first pump impeller and is discharged from the third drain port.

[0019] S22. Control the switching valve to the first switching state, inject water into the first grinding chamber, and operate the first grinding assembly and the first pump impeller. After the kitchen waste in the first grinding chamber is crushed, it enters the forced discharge chamber through the connecting pipe, and the sewage is discharged from the third drain outlet through the first pump impeller.

[0020] In order to distinguish different water level conditions, in step S1, the sensor sends a signal to the controller according to the detected water level in the second grinding chamber. If the second grinding chamber is drained first, a signal "1" is sent; otherwise, a signal "0" is sent.

[0021] Compared with the prior art, the advantages of the present invention are that: the first inlet of the connecting pipe in the kitchen waste treatment system is connected to the first drain outlet of the first grinding chamber, the second inlet is connected to the second drain outlet of the second grinding chamber, and the water outlet is connected to the third feed inlet of the forced discharge chamber. The switching valve switches between the first switching state and the second switching state according to the water level detected by the sensor, so that the water outlet of the connecting pipe can only be connected to the first inlet or the second inlet, ensuring the independence of the operation of the two grinding chambers, without mutual interference and conflict, and the drainage is not prone to blockage, thereby improving the grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a kitchen waste treatment system according to an embodiment of the present invention;

[0023] Figure 2 This is a structural diagram of a kitchen waste treatment system from another angle according to an embodiment of the present invention;

[0024] Figure 3 Schematic diagram of the structure of the first grinding assembly, the first pump wheel and the first motor in an embodiment of the present invention;

[0025] Figure 4 A schematic structural diagram of a cutter head in an embodiment of the present invention;

[0026] Figure 5 is a cross-sectional view of a kitchen waste treatment system according to an embodiment of the present invention;

[0027] Figure 6 for Figure 4 A magnified schematic diagram of point A in the middle;

[0028] Figure 7 4 is a cross-sectional view of the second grinding assembly in an embodiment of the present invention.

[0029] Figure 8 Flowchart of a method for controlling a kitchen waste treatment system according to an embodiment of the present invention. DETAILED DESCRIPTION

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

[0031] like Figure 1-7As shown, a food waste disposal system of this embodiment includes a water tank 9 and a food waste disposer connected to the water tank 9. The food waste disposer has a first grinding chamber 1, a second grinding chamber 2, and a forced exhaust chamber 3, and includes a first grinding assembly 4, a second grinding assembly 5, a first pump impeller 6, a connecting pipe 7, a first motor 8, a filter basket 10, a switching valve 11, and a sensor 12 for detecting the water level in the second grinding chamber 2.

[0032] The first grinding chamber 1 is provided with a first grinding assembly 4 and has a first feed port 1a and a first drain port 1b. The second grinding chamber 2 is provided with a second grinding assembly 5 and has a second feed port 21 and a second drain port 22. The forced exhaust chamber 3 is provided with a first pump wheel 6 and has a third feed port 31 and a third drain port 32. The connecting pipe 7 is a three-way pipe with a first inlet 71, a second inlet 72 and a water outlet 73. The first inlet 71 of the connecting pipe 7 is connected to the first drain port 1b, the second inlet 72 is connected to the second drain port 22, and the water outlet 73 is connected to the third feed port 31. The first grinding chamber 1 has a water inlet 1c, which is fed with water through a water inlet solenoid valve.

[0033] In this embodiment, the switching valve 11 is provided in the connecting pipe 7. The switching valve 11 is rotatably provided at the first inlet 71 and is a disc having the same size as the inner diameter of the connecting pipe 7. The switching valve 11 switches between a first switching state and a second switching state according to the water level detected by the sensor 12. When the switching valve 11 is in the first switching state, the first inlet 71 is connected to the water outlet 73 and the communication between the second inlet 72 and the water outlet 73 is blocked. The disc rotates to a state that is not parallel to the cross section of the connecting pipe 7, as shown in FIG. Figure 5 11a; when the switching valve 11 is in the second switching state, the second inlet 72 is connected to the outlet 73 and the communication between the first inlet 71 and the outlet 73 is blocked, and the disc rotates to a state parallel to the cross section of the connecting pipe 7, as shown in FIG. Figure 5 As shown in 11b.

[0034] The first motor 8 is installed between the first grinding chamber 1 and the forced exhaust chamber 3. The first motor 8 has an output shaft 81 arranged vertically, which is in the form of a shaft with two ends. The first motor 8 drives the first grinding assembly 4 and the first pump wheel 6 to rotate synchronously. The upper end of the output shaft 81 extends into the first grinding chamber 1. The first grinding assembly 4 includes a grinding ring 41, a first grinding disc 42 and a grinding hammer 43 for processing kitchen waste. The first grinding disc 42 is installed at the upper end of the output shaft. A second pump wheel 44 is provided below the first grinding disc 42. The second pump wheel 44 is riveted to the first grinding disc 42 and is driven by the first motor 8 to rotate synchronously to achieve the crushing and grinding of the kitchen waste.

[0035] The lower end of the output shaft 81 extends into the forced discharge chamber 3, and the first pump impeller 6 is mounted on the lower end of the output shaft 81. The first pump impeller 6 has a certain degree of suction effect, allowing wastewater to enter the food waste disposer more smoothly. The first pump impeller 6 also has a forced discharge function, which helps to improve the anti-blocking ability.

[0036] A boss 2a is formed at the bottom of the second grinding chamber 2, and the second grinding assembly 5 includes a second grinding disc 51 for grinding finely crushed residues, a cutter disc 52 for crushing the residues again, an outer rotor 53, an inner rotor 54, a second motor 55, a driven permanent magnet 56, an active permanent magnet 57 and a bearing 58 to grind the finely crushed residues.

[0037] The second grinding disc 51 has a water filter hole, and the cutter disc 52 is located below the second grinding disc 51. The cutter disc 52 includes a base 521, blades 522, and blades 523. The base 521 is vertically arranged and arranged on the outer periphery of the driven portion 532 of the outer rotor 53. There are at least two blades 522 distributed circumferentially on the outer periphery of the base 521. Each blade 522 extends substantially along the axial direction of the base 521 and twists in the same rotational direction. Therefore, from a top-down perspective, all blades 522 exhibit a clockwise or counterclockwise rotation direction as a whole. The blades 523 are located on both sides of the blades 522.

[0038] The outer rotor 53 is positioned above the boss 2a, with a bearing 58 disposed between them and on the boss 2a. The outer rotor 53 has a step 531 corresponding to the boss 2a and a driven portion 532 extending vertically above the step 531. The driven portion 532 passes through the second grinding disc 51. A base 521 is vertically disposed around the outer periphery of the driven portion 532 of the outer rotor 53. The inner rotor 54 is positioned below the boss 2a. Three to ten driven permanent magnets 56 are embedded in the outer rotor 53, while three to ten driving permanent magnets 57 are embedded in the inner rotor 54, enhancing the sealing of the second grinding chamber 2. The driving shaft 551 of the second motor 55 is connected to the inner rotor 54, driving the second grinding disc 51 and the cutter head 52 to rotate synchronously.

[0039] The bottom of the water tank 9 has a feed inlet 9a and a drain outlet 9b. The feed inlet 9a is 100-150mm in size, and the drain outlet 9b is used to drain water and finely chopped food waste. The feed inlet 9a communicates with the first feed inlet 1a of the food waste disposer, while the drain outlet 9b communicates with the second feed inlet 21 of the food waste disposer. A U-shaped bend is provided between the first grinding chamber 1 and the drain outlet 9b to effectively prevent the noise from the first grinding chamber 1 from being transmitted to the water tank 9.

[0040] The bottom of the water tank 9 has a step 91, the feeding port 9a is provided on a first horizontal surface 911 above the step 91, and the drain port 9b is provided on a second horizontal surface 912 below the step 91. A filter basket 10 is provided at the connection between the second grinding chamber 2 and the drain port 9b of the water tank 9. The feeding port 1a is provided with a feeding cover 92 for covering the feeding port 1a. When the user needs to feed, the feeding cover 92 is opened, and the entire plate can be directly fed, which greatly improves the convenience of feeding and the user experience. After opening the feeding cover 92, the machine cannot run, which ensures safety and prevents kitchen waste from splashing.

[0041] The food waste treatment system further includes a controller for controlling the operation of the first motor 8 , the second motor 55 and the switching valve 11 according to a signal from the sensor 12 .

[0042] like Figure 8 As shown, the present invention also protects a control method implemented by the above-mentioned kitchen waste treatment system, comprising the following steps:

[0043] S1. Detect the water level in the second grinding chamber 2 through the sensor 12, determine whether the second grinding chamber 2 is prioritized for drainage based on the water level, and send a signal to the controller. If the second grinding chamber 2 is prioritized for drainage, send a signal "1" and proceed to step S21; otherwise, send a signal "0" and proceed to step S22.

[0044] S21, control the switching valve 11 to be in the second switching state, the first motor 8 starts the weak gear to drive the first pump wheel 6 to rotate, the second motor 55 starts to drive the second grinding assembly 5 to work, the residue in the second grinding chamber 2 is ground and crushed, the sewage passes through the cutter head 52 and the connecting pipe 7 into the strong discharge chamber 3, and is discharged from the third drain port 32 through the first pump wheel 6. After grinding for a certain period of time, the first motor 8 and the second motor 55 are turned off, and then return to step S1 to continue to judge whether the second grinding chamber 2 should be drained first according to the water level and send a signal to the controller.

[0045] S22, the water inlet solenoid valve is opened, tap water is injected into the water inlet 1c of the first grinding chamber 1, the switching valve 11 is controlled to be in the first switching state, the first motor 8 is started in the strong gear to drive the first grinding assembly 4 to rotate, the second motor 55 is not started, the garbage in the first grinding chamber 1 is ground and crushed, the sewage passes through the second pump impeller 44 and the connecting pipe 7 into the strong discharge chamber 3, and is discharged from the third drain port 32 through the first pump impeller 6. After grinding for a certain period of time (usually 1-2 minutes), the first motor 8 is turned off and the work is completed.

Claims

1. A kitchen waste treatment system, comprising a water tank (9) and a kitchen waste treatment device connected to the water tank (9), characterized in that: The bottom of the water tank (9) is provided with a feeding port (9a) and a drainage port (9b); the kitchen waste disposer is provided with a first grinding chamber (1), a second grinding chamber (2) and a forced drainage chamber (3); the first grinding chamber (1) is provided with a first grinding assembly (4) and has a first feeding port (1a) and a first drainage port (1b); the second grinding chamber (2) is provided with a second grinding assembly (5) and has a second feeding port (21) and a second drainage port (22); the forced drainage chamber (3) is provided with a first pump wheel (6) and has a third feeding port (31) and a third drainage port (32); the kitchen waste disposer also includes a connecting pipe (7), a switching valve (11) and a sensor (12) for detecting the water level in the second grinding chamber (2); the connecting pipe (7) is a three-way pipe having a first inlet (71), The first inlet (71) of the connecting pipe (7) is connected to the first drain port (1b), the second inlet (72) is connected to the second drain port (22), and the water outlet (73) is connected to the third feed port (31). The switching valve (11) is arranged in the connecting pipe (7). The switching valve (11) switches between a first switching state and a second switching state according to a water level detected by the sensor (12). When the switching valve (11) is in the first switching state, the first inlet (71) is connected to the water outlet (73) and the communication between the second inlet (72) and the water outlet (73) is blocked; when the switching valve (11) is in the second switching state, the second inlet (72) is connected to the water outlet (73) and the communication between the first inlet (71) and the water outlet (73) is blocked.

2. The kitchen waste treatment system according to claim 1, characterized in that: The switching valve (11) is rotatably disposed at the first inlet (71) and is a disc having the same size as the inner diameter of the connecting pipe (7). When the disc is rotated to be parallel to the cross section of the connecting pipe (7), the switching valve (11) is in the second switching state; otherwise, the switching valve (11) is in the first switching state.

3. The kitchen waste treatment system according to claim 1, characterized in that: The invention also comprises a first motor (8) capable of driving the first grinding assembly (4) and the first pump wheel (6) to rotate synchronously, the first motor (8) being mounted between the first grinding chamber (1) and the forced discharge chamber (3), the first motor (8) having a vertically arranged output shaft (81), the upper end of the output shaft (81) extending into the first grinding chamber (1), the first grinding assembly (4) being mounted on the upper end of the output shaft (81), the lower end of the output shaft (81) extending into the forced discharge chamber (3), and the first pump wheel (6) being mounted on the lower end of the output shaft (81).

4. The kitchen waste treatment system according to claim 3, characterized in that: The first grinding assembly (4) comprises a grinding ring (41), a first grinding disc (42) and a grinding hammer (43) for processing kitchen waste; the first grinding disc (42) is mounted on the upper end of the output shaft (81); and a second pump wheel (44) is provided below the first grinding disc (42).

5. The kitchen waste treatment system according to claim 1, characterized in that: The second grinding assembly (5) comprises a second grinding disc (51) for grinding finely crushed residues and a knife disc (52) for crushing the residues again, wherein the knife disc (52) is arranged below the second grinding disc (51).

6. The kitchen waste treatment system according to claim 5, characterized in that: A boss (2a) is formed at the bottom of the second grinding chamber (2). The second grinding assembly (5) further comprises an outer rotor (53), an inner rotor (54) and a second motor (55). The outer rotor (53) is arranged above the boss (2a). The outer rotor (53) has a step portion (531) corresponding to the boss (2a) and a driven portion (532) arranged above the step portion (531) and extending vertically. The driven portion (532) passes through the second grinding disc (51). The cutter disc (52) is arranged on the driven portion (532). A driven permanent magnet (56) is embedded in the outer rotor (53). The inner rotor (54) is arranged below the boss (2a). An active permanent magnet (57) is embedded in the inner rotor (54). The driving shaft (551) of the second motor (55) is connected to the inner rotor (54) so ​​as to drive the second grinding disc (51) and the cutter disc (52) to rotate synchronously.

7. The kitchen waste treatment system according to claim 6, characterized in that: The cutter disc (52) comprises a chassis (521), blades (522) and blades (523). The chassis (521) is vertically arranged and disposed on the outer periphery of the driven portion (532) of the outer rotor (53). The blades (522) have at least two blades and are distributed circumferentially on the outer peripheral surface of the chassis (521). Each blade (522) basically extends along the axial direction of the chassis (521) and twists in the same rotation direction, so that from a top-down perspective, all the blades (522) present a clockwise or counterclockwise rotation direction as a whole. The blades (523) are disposed on both side surfaces of the blades (522).

8. The kitchen waste treatment system according to claim 1, characterized in that: The water tank (9) has a step (91) at the bottom, a feeding port (9a) is arranged on a first horizontal plane (911) above the step (91), and a drainage port (9b) is arranged on a second horizontal plane (912) below the step (91).

9. The kitchen waste treatment system according to claim 1, characterized in that: The first grinding chamber (1) has a water inlet (1c), and water is introduced into the water inlet (1c) through a water inlet solenoid valve.

10. A method for controlling a kitchen waste treatment system, characterized in that: The control method is implemented by the kitchen waste treatment system according to any one of claims 1 to 9, comprising the following steps: S1, detecting the water level in the second grinding chamber (2) by means of a sensor (12), and judging whether the second grinding chamber (2) is to be drained first according to the water level; if the second grinding chamber (2) is to be drained first, proceeding to step S21; otherwise, proceeding to step S22; S21, the control switching valve (11) is in the second switching state, the first pump wheel (6) and the second grinding assembly (5) are in operation, the residue entering the second grinding chamber (2) is crushed by the second grinding assembly (5), and then enters the forced discharge chamber (3) through the connecting pipe (7), and the sewage passes through the first pump wheel (6) and is discharged from the third drainage port (32); S22, control the switching valve (11) to be in the first switching state, inject water into the first grinding chamber (1), the first grinding assembly (4) and the first pump wheel (6) are in operation, the kitchen waste in the first grinding chamber (1) is crushed and enters the forced discharge chamber (3) through the connecting pipe (7), and the sewage is discharged from the third drainage port (32) through the first pump wheel (6).

11. The method for controlling a kitchen waste treatment system according to claim 10, characterized in that: In step S1, the sensor (12) sends a signal to the controller according to the detected water level in the second grinding chamber (2); if the second grinding chamber (2) is drained first, a signal "1" is sent; otherwise, a signal "0" is sent.

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