A self-cleaning food processor capable of separating material and water and pulping method thereof

Abstract

The present invention relates to kitchen appliances, in particular to a self-cleaning food processor capable of separating material from water. The drain valve assembly connects and disconnects the drain inlet and the outlet by controlling the movement of the valve core. The valve core has a first position, a second position, and a third position. In the first position, the drain inlet and the outlet are fully connected, and the liquid in the pulping chamber is discharged through the drain valve assembly. In the second position, the drain inlet and the outlet are partially connected, and the drain valve assembly is used to separate the material from the water in the pulping chamber. In the third position, the drain inlet and the outlet are disconnected. The food processor of the present invention has the function of not requiring hand washing products, and can also realize the function of automatically cleaning or automatically soaking the material. Moreover, the material and water can be filtered and separated without the need for setting fine filter mesh. Automatic pulping using the food processor of the present invention has a simpler structure and is easier to clean.

Description

Technical Field

[0001] The invention relates to kitchen appliances, in particular to a self-cleaning food processor capable of separating material from water and a pulping method thereof. Background Art

[0002] Existing hands-free food processors offer features such as automatic pulping, automatic pulp discharge, and automatic cleaning. As the functionality of hands-free products continues to grow, consumers are increasingly demanding new features. For example, they want hands-free food processors that can clean ingredients, automatically soak ingredients to make wet bean milk, and offer a timer function.

[0003] In order to meet this demand of consumers, the prior art has proposed solutions such as those disclosed in patents CN201820266581.7 and CN202020655751.8, that is, a filter hole with a filter mesh is provided on the movable valve plate or valve core, and the waste water from washing the bean material can be discharged through the filter hole, while the bean material can be retained in the grinding chamber. At the same time, the above patent also discloses that the movable valve plate or valve core is provided with a slurry discharge hole independent of the filter hole. After the soy milk is made, the slurry in the grinding chamber can be discharged through the slurry discharge hole by controlling the rotation of the movable valve plate or valve core. Although the above patent effectively solves the problem that the waste water from washing beans or soaking beans in a food processing machine that does not require hand washing cannot be automatically discharged. However, for the structure disclosed in patent CN201820266581.7, the movable valve disc may bring the pulp residue into the gap between the movable valve disc and the static valve disc during the rotation process, resulting in a cleaning dead corner; moreover, the filter hole has a fine mesh, and in the process of discharging the bean washing water, impurities in the wastewater may clog the mesh, and the filter mesh is difficult to clean after being clogged. For the structure disclosed in patent CN202020655751.8, since the valve core has a pulp outlet channel, and the filter hole and the pulp outlet hole are both provided on the outer wall of the valve core and are both connected to the pulp outlet channel, during the pulp discharge process, the pulp flushed into the pulp outlet channel from the pulp outlet hole will inevitably impact the filter mesh, and the gelatinized pulp residue is easy to adhere to the filter mesh, which also has the problem of easy clogging of the filter mesh and difficult cleaning.

[0004] In addition, the prior art also discloses a patent number "CN202123045442.2", entitled "Valve Body Assembly and Food Processor". The patent discloses that the valve core has two independent first and second flow channels, and the outer wall of the valve core is provided with a first drain port (drain port) connected to the first flow channel, and a second drain port (filter port) connected to the second flow channel. Since the first flow channel and the second flow channel are independent of each other and not connected to each other, the gelatinized pulp residue can be prevented from impacting the meshed second drain port (filter port) during the pulping process, effectively preventing the pulp residue from sticking to the second drain port. However, in this patent, the second drain port is still designed to be a fine mesh filter hole. After using the food processor for automatic bean soaking or cleaning, impurities will also exist in the wastewater, which is also easy to clog the fine filter mesh. Moreover, most of the existing pulp discharge valve assemblies are designed to be structures that cannot be disassembled by users. The blocked filter mesh is difficult to clean. Long-term use not only poses food safety and hygiene problems, but also seriously affects the normal use of the food processor. Summary of the Invention

[0005] The present invention aims to provide a self-cleaning food processor that, while maintaining the functionality of existing hand-washing products, also enables automatic cleaning or soaking of materials. Furthermore, the processor can filter and separate materials from water without requiring a fine filter mesh. Furthermore, when the self-cleaning food processor of the present invention is used for automatic pulping, there is no risk of clogged or difficult-to-clean drain valve components. Furthermore, the present invention provides a simpler structure for separating materials from water.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a self-cleaning food processing machine capable of separating material and water, comprising a pulping chamber and a drain valve assembly fixed to the bottom of the pulping chamber, wherein a liquid outlet is provided at the bottom of the pulping chamber, and the drain valve assembly is installed at the liquid outlet to control the opening and closing of the liquid outlet, characterized in that the drain valve assembly has a drain channel, a drain inlet connected to the upstream of the drain channel, and a drain outlet connected to the downstream of the drain channel, and the drain valve assembly realizes the opening and closing of the liquid outlet by controlling the movement of the valve core. The drain inlet and the liquid outlet are connected and shut off, and the valve core has a first position, a second position and a third position. When the valve core moves to the first position, the drain inlet and the liquid outlet are fully connected, and the liquid in the pulping chamber is discharged through the drain valve assembly; when the valve core moves to the second position, the drain inlet and the liquid outlet are partially connected, and the drain valve assembly is used to separate the material and water in the pulping chamber; when the valve core moves to the third position, the drain inlet and the liquid outlet are shut off.

[0007] Furthermore, the drain valve assembly also includes a detection plate, on which are provided a first detection element, a second detection element and a third detection element for detecting whether the valve core is in a first position, a second position and a third position, respectively. A magnet is provided on the valve core, and the valve core drives the magnet to move so that when the valve core is in different positions, the magnet triggers the first detection element, the second detection element and the third detection element to sense corresponding position signals.

[0008] Furthermore, the first detection element, the second detection element and the third detection element are arranged on the same straight line;

[0009] Alternatively, the first detection element, the second detection element and the third detection element are arranged on the arc of the same circle;

[0010] Alternatively, the second detection element is disposed between the first detection element and the third detection element.

[0011] Furthermore, when the valve core is in the second position, the width of the liquid discharge inlet relative to the liquid outlet is 2 mm to 10 mm;

[0012] Alternatively, when the valve core is in the second position, the area of the liquid discharge inlet partially opened relative to the liquid outlet is S2, and when the valve core is in the first position, the area of the liquid discharge inlet fully opened relative to the liquid outlet is S1, wherein S2 / S1 does not exceed 1 / 2.

[0013] Furthermore, when the valve core moves to the first position and the second position, the liquid discharge inlet communicated with the liquid outlet is the same inlet;

[0014] Alternatively, the drain valve assembly includes a valve housing, a connecting port is provided on the valve housing and is opposite to the liquid outlet, the valve core is installed in the valve housing, the drain channel is provided in the valve core, and the drain inlet is provided on the outer side wall of the valve core, and the valve core is located in the valve housing and rotates so that the drain inlet is connected to and disconnected from the connecting port.

[0015] Furthermore, the drain valve assembly includes a valve housing, the valve core is installed in the valve housing, and the valve core moves linearly in the valve housing.

[0016] Furthermore, the drainage inlet is provided on the valve housing, the drainage inlet is arranged opposite to the liquid outlet, and the drainage channel is provided in the valve housing, and the valve core is located in the valve housing and moves horizontally to open and close the drainage inlet;

[0017] Alternatively, the valve housing is provided with a communication port facing the liquid outlet, the drainage channel is provided in the valve core, and the drainage inlet is provided on the outer wall of the valve core, and the valve core is located in the valve housing and moves horizontally so that the drainage inlet is connected to and disconnected from the communication port.

[0018] Furthermore, the drain valve assembly also includes a movable drain nozzle, the drain outlet is connected to the drain nozzle, and the drain nozzle can be movably switched between a pulp discharge position and a waste discharge position.

[0019] Furthermore, the liquid discharge nozzle is driven by the valve core;

[0020] Alternatively, the liquid discharge nozzle is switched between the pulp discharge position and the waste discharge position by rotation or translation;

[0021] Alternatively, the liquid discharge valve assembly further includes a valve housing, the valve core is disposed in the valve housing, and the liquid discharge nozzle is detachable relative to the valve housing.

[0022] In addition, the present invention also provides a pulping method for the self-cleaning food processor as described above, characterized in that the pulping method comprises:

[0023] Processing stage: cleaning or soaking the materials in the pulping chamber;

[0024] Separation stage: the control valve core moves to the second position, the drainage inlet and the liquid outlet are partially connected, the material remains in the pulping chamber, and the wastewater is discharged through the drainage valve assembly;

[0025] Pulping stage: pulping the material in the pulping chamber;

[0026] Discharge stage: the valve core is controlled to move to the first position, the discharge inlet and the discharge outlet are fully connected, and the slurry in the pulping chamber is discharged by the discharge valve assembly;

[0027] Cleaning stage: cleaning the pulping chamber;

[0028] Waste discharge stage: the valve core is controlled to move to the first position, the drainage inlet and the liquid outlet are fully connected, and the cleaning waste water in the pulping chamber is discharged by the drainage valve assembly.

[0029] For the food processing machine of the present invention, the drain valve assembly realizes the connection and disconnection between the drain valve assembly and the pulping chamber by controlling the movement of the valve core. The valve core has three position states. When it is in the first position, the valve core fully connects the drain inlet with the liquid outlet, so that the slurry in the pulping chamber or the wastewater after the pulping chamber is cleaned can be discharged through the drain valve assembly; when the valve core moves to the third position, the drain inlet is in a closed state relative to the liquid outlet, and the food processing machine can perform automatic water inlet, automatic pulping and automatic cleaning operations. When the valve core moves to the second position, the valve core partially connects the same drain inlet with the liquid outlet. Compared with the full connection state of the drain inlet and the liquid outlet, the partial connection can reduce the opening of the drain outlet. Large materials will be restricted by the drain assembly in the pulping chamber and cannot be discharged, while the wastewater for cleaning or soaking materials can be discharged through the drain valve assembly. Compared with the existing self-cleaning food processors, the food processor of the present invention has the function of automatic cleaning of materials and the reservation function of automatic soaking of materials, which greatly expands the functional attributes of the food processor and meets more needs of consumers. In addition, the food processor of the present invention has a higher degree of automation.

[0030] Furthermore, compared to existing food processors with filter meshes, the food processor of the present invention achieves smoother material-water separation, preventing impurities or slurry from clogging the meshes. The drain valve assembly can be automatically cleaned, making maintenance easier. Furthermore, even if small particles enter the drain channel during the material-water separation process, the food processor of the present invention can automatically drain through the channel, eliminating the risk of blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below in conjunction with the accompanying drawings:

[0032] Figure 1 It is a structural schematic diagram of the food processing machine of the present invention;

[0033] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the discharge valve assembly at position A in the middle;

[0034] Figure 3 for Figure 1 Schematic diagram of the structure of the valve core in the drain valve assembly;

[0035] Figure 4 for Figure 1 Schematic diagram of the structure of the middle discharge valve assembly installed on the crushing assembly;

[0036] Figure 5 for Figure 1 A schematic structural diagram of the middle discharge valve assembly when the valve core is in the first position;

[0037] Figure 6 for Figure 1 A schematic structural diagram of the middle discharge valve assembly when the valve core is in the second position;

[0038] Figure 7 for Figure 1 A schematic diagram of the structure of the middle discharge valve assembly when the valve core is in the third position;

[0039] Figure 8 for Figure 1 Pulping flow chart of food processor. DETAILED DESCRIPTION

[0040] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 FIG2 is a schematic structural diagram of an embodiment of a self-cleaning food processor according to the present invention. The processor comprises a body 1 and a pulverizing assembly 2 mounted within the body 1. The pulverizing assembly 2 defines a pulping chamber 20, and a liquid outlet 21 is disposed at the bottom of the pulping chamber 20. A drain valve assembly 3 is fixedly mounted on the outer side of the pulping chamber 20 at the liquid outlet 21. The drain valve assembly 3 is configured to control the opening and closing of the liquid outlet 21, thereby draining the liquid from the pulping chamber 20.

[0041] In this embodiment, the drain valve assembly 3 includes a valve housing 31, a valve core 32 installed in the valve housing 31, a drive motor 33 for controlling the rotation of the valve core 32, a detection plate 34, and a drain nozzle 35. The valve housing 31 is provided with a communication port (not marked in the figure) directly opposite the liquid outlet 21, and the valve core 32 has a hollow drainage channel 320. A drainage inlet 321 located upstream of the drainage channel 320 is provided on the outer wall of the valve core 32. A drainage outlet 322 is provided at the lower end of the valve core 32 and downstream of the drainage channel 320. The drainage outlet 322 is always connected to the drainage nozzle 35. The valve core 32 is driven by the drive motor 33 to rotate in the valve housing 31 and has a first position, a second position, and a third position. When the valve core 32 is in the first position, the drainage inlet 321 is fully connected with the liquid outlet 21 (and the communication port), and the liquid in the pulping chamber 20 can be discharged through the drain valve assembly 3. When the valve core 32 is in the second position, the drainage inlet 321 is partially connected to the liquid outlet 21 (and the communication port), and the drainage assembly 3 can be used to filter and separate the material and water in the pulping chamber 20. When the valve core 32 is in the third position, the drainage inlet 321 and the liquid outlet 21 are closed.

[0042] In this embodiment, a magnet 323 is fixed to the upper end of the valve core 32, and the magnet 323 rotates with the valve core 32, and the detection plate 34 is fixed to the valve housing 31 and is located above the valve core 32 and is arranged adjacent to the magnet 323. At the same time, the detection plate 34 is provided with a first detection element 341 for detecting that the valve core 32 is in the first position, a second detection element 342 for detecting that the valve core 32 is in the second position, and a third detection element 343 for detecting that the valve core 32 is in the third position, wherein the first detection element 341, the second detection element 342, and the third detection element 343 are arranged around the rotation axis of the valve core 32, and the first detection element 341, the second detection element 342 and the third detection element 343 are located on the arc of the same circle, and the second detection element 342 is arranged between the first detection element 341 and the third detection element 343. When the driving motor 33 drives the valve core 32 to rotate to the first position, the magnet 323 triggers the first detection element 341 to sense the position signal of the valve core 32, and the valve core 32 stops rotating (eg, Figure 5 When the valve core 32 drives the magnet 323 to rotate to the second position, the magnet 323 triggers the second detection element 342 to sense the position signal of the valve core 32, and the valve core 32 stops rotating in the second position (as shown); Figure 6 similarly, when the valve core 32 rotates to the third position, the magnet 323 triggers the third detection element 343 sensing the position signal of the valve core 32, and the valve core 32 stops rotating in the third position.

[0043] Moreover, in this embodiment, the liquid discharge nozzle 35 is installed on the outside of the valve core 31 and is driven to rotate by the same drive motor 33. The liquid discharge nozzle 35 can be rotated and switched between the pulp discharge position above the pulp receiving cup (not marked in the figure) and the waste discharge position above the waste water cup (not marked in the figure) to realize automatic pulp discharge and waste water discharge operations of the food processing machine.

[0044] For the automatic cleaning food processing machine of this embodiment, the automatic pulping process is as follows (eg Figure 8 shown):

[0045] Processing stage: the drain valve assembly is in a closed state, water is fed into the pulping chamber, and the material in the pulping chamber is soaked or cleaned for a predetermined period of time.

[0046] Separation stage: the control valve core rotates to the second position, the drainage inlet and the liquid outlet are partially connected, the treated wastewater in the pulping chamber is discharged to the wastewater cup through the drainage valve assembly, and the material remains in the pulping chamber.

[0047] Pulping stage: control the drain valve assembly to close, allow water to flow into the pulping chamber, and perform pulping operations on the material and water in the pulping chamber.

[0048] Discharge stage: the control valve core rotates to the first position, the discharge inlet and the discharge outlet are fully connected, and the slurry in the pulping chamber is discharged to the slurry receiving cup through the discharge valve assembly.

[0049] Cleaning stage: Control the drain valve assembly to return to the closed state, allow water to flow into the pulping chamber, and perform cleaning operations on the pulping chamber.

[0050] Waste discharge stage: the control valve core rotates to the first position, the drainage inlet and the liquid outlet are fully connected, and the cleaning waste water in the pulping chamber is discharged to the waste water cup by the drainage valve assembly.

[0051] The automatic cleaning food processor of this embodiment adopts the above method to realize the operations of automatic cleaning or soaking of materials, automatic drainage of wastewater, automatic pulping, and automatic cleaning. Compared with the prior art food processors that do not require hand washing, it has more powerful functions and a higher degree of automation.

[0052] At the same time, for the food processing machine of this embodiment, the drain valve assembly realizes the connection and disconnection between the drain valve assembly and the pulping chamber by controlling the rotation of the valve core. Among them, the valve core has three position states. When it is in the first position, the valve core fully connects the drain inlet and the liquid outlet, so that the slurry in the pulping chamber or the wastewater after the pulping chamber is cleaned can be discharged through the drain valve assembly; when the valve core moves to the third position, the drain inlet is closed relative to the liquid outlet, and the food processing machine can perform automatic water inlet, automatic pulping and automatic cleaning operations. When the valve core moves to the second position, the valve core partially connects the same drain inlet and the liquid outlet. Compared with the full connection state of the drain inlet and the liquid outlet, the partial connection can reduce the opening of the drain outlet. Large materials will be restricted by the drain assembly in the pulping chamber and cannot be discharged, while the wastewater from cleaning or soaking materials can be discharged through the drain valve assembly. Compared with the existing self-cleaning food processors, the food processor of this embodiment has the function of automatic cleaning of materials and the reservation function of automatic soaking of materials, which greatly expands the functional attributes of the food processor and meets more needs of consumers. In addition, the food processor of this embodiment has a higher degree of automation.

[0053] In addition, compared to existing food processors with filter meshes, the food processor of this embodiment separates material from water more smoothly, without the problem of impurities or slurry clogging the meshes. The drain valve assembly can be automatically cleaned, making maintenance easier. Moreover, in the food processor of this embodiment, even if small materials enter the drain channel during the material-water separation process, due to the small opening of the drain inlet, the small materials will not be stuck in the drain channel and can still be automatically discharged through the drain channel. Even if small materials adhere to the inner wall of the drain channel, when the food processor enters the waste discharge stage, the cleaning water can flush the small materials out of the drain channel, and the problem of clogging the drain channel will not occur.

[0054] It should be noted that during the material-water separation stage of the food processor of this embodiment, if material is stuck in the liquid outlet, the valve core can be driven to move back and forth slightly to squeeze the material back into the pulping chamber. Of course, when processing materials, the food processor of this embodiment is not limited to simply soaking or pre-soaking the materials. The materials can also be slowly stirred during the soaking process to accelerate the soaking of the materials without breaking them, further reducing the purine substances in the materials. In addition, the food processor of this embodiment can also be used to clean the materials to wash away dust and impurities on the surface of the materials.

[0055] Since the food processing machine of this embodiment can realize the filtering and separation operation of materials and water when the valve core is in the second position, ensuring that during the filtering and separation operation, materials are prevented from entering the drainage channel through the drainage inlet, causing blockage of the drainage channel, and ensuring the efficiency of wastewater separation are difficulties in the implementation of the present invention. The inventors have found through research that when the drainage inlet is partially connected to the liquid outlet, if the drainage inlet is opened wider, the materials are relatively easier to fall into the drainage channel, while if the drainage inlet is opened smaller, due to the viscosity of water, the wastewater after washing or soaking flows out more slowly. Moreover, even if the filtering and separation time is extended, more wastewater will remain in the pulping chamber, and the separation efficiency is relatively low. The inventors have found through research that, for the food processing machine of this embodiment, the area S2 of the liquid discharge inlet partially opened relative to the liquid outlet when the valve core is in the second position is related to the area S1 of the liquid discharge inlet fully opened relative to the liquid outlet when the valve core is in the first position. When S2 / S1 does not exceed 1 / 2, the food processing machine of this embodiment can achieve the cleaning and soaking of soybeans; however, when S2 / S1 is less than 1 / 10, the separation efficiency is low and the wastewater is easily not discharged cleanly. For this embodiment, S2 is generally selected to be 30mm 2 ~100mm 2 Where S2 = 35mm 2 ~90mm 2 When the valve core is in the second position, over 90% of different bean varieties can be soaked and cleaned. Furthermore, in this embodiment, when the valve core is in the second position, the drainage inlet and the outlet are partially connected to form a strip-shaped connecting hole. The inventors have found that the horizontal width of the drainage inlet relative to the outlet is generally selected to be 2mm to 10mm, which can ensure that soybeans do not fall into the drainage channel. Since users may add rice and other materials during soaking or cleaning, to prevent clogging of the drainage channel, the horizontal width of the partial opening is preferably 3mm to 5mm.

[0056] In this embodiment, the outer wall of the valve core is provided with only one drainage inlet for communicating with the drainage channel. When the valve core is in both the first and second positions, the drainage inlet communicates with the liquid outlet through the same inlet. Of course, in this embodiment, a connection port circumferentially spaced relative to the drainage inlet can also be provided on the outer wall of the valve core. This connection port can also communicate with the drainage channel, and external cleaning water connected to this connection port can directly flush the drainage channel.

[0057] The structure of the drain valve assembly of the present invention is not limited to that disclosed in this embodiment. For example, the drain valve assembly includes a valve housing, a valve core mounted within the valve housing, and the valve core moves translationally within the valve housing. The drain inlet is disposed on the valve housing, the drain inlet is positioned opposite the liquid outlet, and the drain passage is located within the valve housing. The valve core moves translationally within the valve housing to open and close the drain inlet. Alternatively, the valve housing may be provided with a communication port that faces the liquid outlet, the drain passage is disposed within the valve core, and the drain inlet is disposed on the outer wall of the valve core. The valve core moves translationally within the valve housing to connect and disconnect the drain inlet and the communication port. In other words, the drain valve assembly of the present invention is also applicable to a solution in which the valve core moves translationally within the valve housing, and the valve core can also have three different positions. Furthermore, in the above structure, the first detection element, the second detection element, and the third detection element can be disposed on the same straight line.

[0058] Of course, for the drain nozzle of this embodiment, its movement between the slurry discharge position and the waste discharge position is not limited to the rotation disclosed in this embodiment. The drain nozzle can also be driven by a driving device to achieve linear translation between the slurry discharge position and the waste discharge position. Even more, the drain nozzle of this embodiment can be inactive, and the user can manually switch the slurry receiving cup and the waste water cup when discharging slurry and waste water. To facilitate cleaning of the drain nozzle, for this embodiment, the drain nozzle can also be set to be removable relative to the valve housing.

[0059] Those skilled in the art will appreciate that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the above-described specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention, as well as the structural changes of the above-described embodiments of the present invention, will be included in the scope of the claims.

Claims

1. A self-cleaning food processor capable of separating material from water, comprising a pulping chamber and a drain valve assembly fixed to the bottom of the pulping chamber, wherein the bottom of the pulping chamber is provided with a liquid outlet, and the drain valve assembly is installed at the liquid outlet to control the opening and closing of the liquid outlet, characterized in that: The drain valve assembly comprises a drain channel, a drain inlet connected to the upstream of the drain channel and a drain outlet connected to the downstream of the drain channel, the drain valve assembly realizes the connection and shutoff of the drain inlet and the liquid outlet by controlling the movement of the valve core, the valve core has a first position, a second position and a third position, when the valve core moves to the first position, the drain inlet and the liquid outlet are in a fully connected state, when discharging slurry, the slurry in the pulping chamber is discharged to the slurry receiving cup through the drain valve assembly, when discharging waste, the cleaning waste water in the pulping chamber is discharged to the waste water cup through the drain valve combination; when the valve core moves to the second position, the drain inlet and the liquid outlet are partially connected, the drain valve assembly is used to separate the material and water in the pulping chamber, and the waste water for soaking or cleaning the material is discharged to the waste water cup through the drain valve assembly, and the material remains in the pulping chamber; when the valve core moves to the third position, the drain inlet and the liquid outlet are in a closed state.

2. The self-cleaning food processor capable of separating material and water according to claim 1, characterized in that: The liquid discharge valve assembly also includes a detection plate, on which are provided a first detection element, a second detection element and a third detection element for detecting whether the valve core is in a first position, a second position and a third position, respectively. A magnet is provided on the valve core, and the valve core drives the magnet to move so that when the valve core is in different positions, the magnet triggers the first detection element, the second detection element and the third detection element to sense corresponding position signals.

3. The self-cleaning food processor capable of separating material and water according to claim 2, characterized in that: The first detection element, the second detection element and the third detection element are arranged on the same straight line; Alternatively, the first detection element, the second detection element and the third detection element are arranged on the arc of the same circle; Alternatively, the second detection element is disposed between the first detection element and the third detection element.

4. The self-cleaning food processor capable of separating material and water according to claim 1, characterized in that: When the valve core is in the second position, the width of the liquid discharge inlet relative to the liquid outlet is 2 mm to 10 mm; Alternatively, when the valve core is in the second position, the area of the liquid discharge inlet partially opened relative to the liquid outlet is S2, and when the valve core is in the first position, the area of the liquid discharge inlet fully opened relative to the liquid outlet is S1, wherein S2 / S1 does not exceed 1 / 2.

5. The self-cleaning food processor capable of separating material and water according to claim 1, characterized in that: When the valve core moves to the first position and the second position, the liquid discharge inlet communicated with the liquid outlet is the same inlet; Alternatively, the drain valve assembly includes a valve housing, a connecting port is provided on the valve housing and is opposite to the liquid outlet, the valve core is installed in the valve housing, the drain channel is provided in the valve core, and the drain inlet is provided on the outer side wall of the valve core, and the valve core is located in the valve housing and rotates so that the drain inlet is connected to and disconnected from the connecting port.

6. The self-cleaning food processor capable of separating material and water according to claim 1, characterized in that: The liquid discharge valve assembly comprises a valve housing, the valve core is installed in the valve housing, and the valve core moves horizontally in the valve housing.

7. The self-cleaning food processor capable of separating material and water according to claim 6, characterized in that: The drainage inlet is provided on the valve housing, the drainage inlet is arranged opposite to the liquid outlet, and the drainage channel is provided in the valve housing. The valve core is located in the valve housing and moves horizontally to open and close the drainage inlet. Alternatively, the valve housing is provided with a communication port facing the liquid outlet, the drainage channel is provided in the valve core, and the drainage inlet is provided on the outer wall of the valve core, and the valve core is located in the valve housing and moves horizontally so that the drainage inlet is connected to and disconnected from the communication port.

8. The self-cleaning food processor capable of separating material and water according to claim 1, characterized in that: The drain valve assembly further comprises a movable drain nozzle, the drain outlet is communicated with the drain nozzle, and the drain nozzle can be movably switched between a pulp discharge position and a waste discharge position.

9. The self-cleaning food processor capable of separating material and water according to claim 8, characterized in that: The liquid discharge nozzle is driven by the valve core; Alternatively, the liquid discharge nozzle is switched between the pulp discharge position and the waste discharge position by rotation or translation; Alternatively, the liquid discharge valve assembly further includes a valve housing, the valve core is disposed in the valve housing, and the liquid discharge nozzle is detachable relative to the valve housing.

10. A pulping method for a self-cleaning food processor according to any one of claims 1 to 9, characterized in that: The pulping method comprises: Processing stage: cleaning or soaking the materials in the pulping chamber; Separation stage: the control valve core moves to the second position, the drainage inlet and the liquid outlet are partially connected, the material remains in the pulping chamber, and the wastewater is discharged to the wastewater cup through the drainage valve assembly; Pulping stage: pulping the material in the pulping chamber; Discharge stage: the valve core is controlled to move to the first position, the discharge inlet and the discharge outlet are fully connected, and the slurry in the pulping chamber is discharged to the slurry receiving cup through the discharge valve assembly; Cleaning stage: cleaning the pulping chamber; Waste discharge stage: the control valve core moves to the first position, the drainage inlet and the liquid outlet are fully connected, and the cleaning waste water in the pulping chamber is discharged to the waste water cup by the drainage valve assembly.

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