Kitchen waste wet pretreatment system and pretreatment method thereof

Abstract

The application discloses a kitchen garbage wet pretreatment system and a pretreatment method thereof, and relates to the technical field of kitchen garbage pretreatment, which comprises a solid-liquid separation component for dry-wet garbage separation and a garbage crushing component for multiple garbage crushing, a garbage feeding port is arranged on the side of the solid-liquid separation component, a pipeline type iron removal component is arranged on the side, away from the garbage feeding port, of the solid-liquid separation component, the garbage crushing component is arranged on the side, away from the solid-liquid separation component, of the pipeline type conveying iron removal component, a slurry separation component is arranged on the side, away from the pipeline type conveying iron removal component, of the garbage crushing component, and a liquid storage component is arranged on the side, away from the garbage crushing component, of the slurry separation component. When wet garbage is crushed, the crushed wet garbage is screened, and the wet garbage is secondarily crushed, so that the wet garbage can be better treated in the subsequent treatment and the pipeline is not blocked by the nature of the garbage.

Description

Technical Field

[0001] This invention relates to the field of kitchen waste pretreatment technology, specifically to a wet pretreatment system and method for kitchen waste. Background Technology

[0002] Food waste pretreatment refers to the preliminary treatment of food waste before it is fully processed, in order to improve the efficiency and effectiveness of subsequent treatment. The main purpose of pretreatment is to separate organic and inorganic matter in food waste and remove impurities that may be harmful to the processing. Pretreatment typically includes steps such as receiving, conveying, crushing, screening, magnetic separation, and impurity removal. However, when processing food waste, the various substances contained within it often affect the processing; therefore, a wet pretreatment system for food waste is needed.

[0003] The application number CN202310232974.1 was found to be a pre-treatment system for kitchen waste, which has advantages such as high pre-treatment and sorting efficiency, low equipment wear, high organic matter recovery rate, no need for additional water addition, low wastewater production, and energy and land saving.

[0004] However, existing wet waste pretreatment systems still have certain shortcomings in actual use: during the waste processing, the inherent structure of the waste can cause pipe blockage. For example, the waste may contain kitchen waste, which contains various impurities such as toothpicks, waste tableware, paper towels, and plastics. Therefore, when the waste is crushed, it often sticks together, preventing it from being completely crushed. This affects subsequent production processes. To address this, we propose a wet pretreatment system for kitchen waste. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a wet pretreatment system for kitchen waste. The system aims to improve the situation where, during waste processing, the inherent structure of the waste can cause pipe blockages. For example, kitchen waste contains various impurities such as toothpicks, discarded tableware, paper towels, and plastics. Therefore, during the crushing process, the waste often sticks together, preventing complete crushing and thus affecting subsequent production processes.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a wet pretreatment system for kitchen waste, comprising a solid-liquid separation component for separating dry and wet waste and a waste crushing component for multiple waste crushing operations. The solid-liquid separation component has a waste inlet on its side, and a pipeline-type iron removal component is provided on the side of the solid-liquid separation component away from the waste inlet. The waste crushing component is located on the side of the pipeline-type iron removal component away from the solid-liquid separation component, and a slurry separation component is provided on the side of the waste crushing component away from the pipeline-type iron removal component. A liquid storage component is provided on the side of the slurry separation component away from the waste crushing component.

[0007] Furthermore, the solid-liquid separation component includes a collection chamber, a filter screen, a sewage inlet, a drain pipe, a first feeding channel, and a screw rod. The filter screen is bolted to the inner wall of the collection chamber on the side away from the waste crushing component. A sewage inlet is located below the filter screen, and a drain pipe is bolted to the bottom of the sewage inlet. A first feeding component is located on the side of the sewage inlet away from the waste inlet, and a screw rod is installed at both the upper and lower ends of the inner wall of the first feeding component.

[0008] Furthermore, the waste crushing assembly includes a water supply bracket, a first fixed bracket, a first crushing chamber, a screening chamber, a second crushing chamber, a second fixed bracket, a docking bracket, and a second feeding channel. The first fixed bracket is positioned above the two sets of water supply brackets, and the first crushing chamber is bolted to the bottom of the first fixed bracket. The screening chamber is bolted to the bottom of the first crushing chamber, and the second crushing chamber is bolted to the bottom of the screening chamber. The second fixed bracket is positioned below the second crushing chamber. Two sets of docking brackets are positioned on the side of the waste crushing assembly away from the pipeline conveying and iron removal assembly, and the second feeding channel is installed at the center of the two sets of docking brackets.

[0009] Furthermore, the water supply support includes a water inlet pipe, a vibration chamber, a mounting shaft, a drive motor, and a discharge channel. The vibration chamber is located below the water inlet pipe, and the mounting shaft is located below the vibration chamber. The drive motor is bolted to the side of the mounting shaft away from the slurry separation component, and the discharge channel is located on the side of the mounting shaft away from the water inlet pipe.

[0010] Furthermore, the slurry separation assembly includes a connecting pipe, a first separation chamber, a second separation chamber, a liquid outlet pipe, a dry material conveying channel, and a collection box. The first separation chamber is located on the side of the connecting pipe away from the waste crushing assembly, and the second separation chamber is located below the first separation chamber. The liquid outlet pipe is located on the side of the second separation chamber away from the connecting pipe, and the dry material conveying channel is located on the left side of the liquid outlet pipe. The collection box is located on the side of the dry material conveying channel away from the liquid outlet pipe.

[0011] Furthermore, the pipeline conveying iron removal assembly includes a motor chamber, a waste conveying channel, and an iron removal adsorption channel, with the waste conveying channel located on the right side of the motor chamber and the iron removal adsorption channel located below the waste conveying channel.

[0012] Furthermore, the first crushing chamber includes a first crushing roller and a blocking bracket, and the blocking bracket is provided on the side of both sets of first crushing rollers away from the center. The outer surface of the first crushing roller is provided with teeth, and the two sets of first crushing rollers mesh with each other through the teeth. The second crushing chamber includes a second crushing roller, a discharge port and a placement chamber. The discharge port is provided on the side of the second crushing roller away from the drive motor, and the placement chamber is provided below the discharge port.

[0013] Furthermore, the screening chamber includes a mounting bracket and an inclined screening screen, and the inclined screening screen is installed twice on the inner wall of the mounting bracket by bolts, and the inclined surface of the inclined screening screen is close to the discharge channel.

[0014] Furthermore, the liquid storage assembly includes an observation channel, a storage chamber, and a delivery pipe, with the storage chamber located below the observation channel and the delivery pipe located on the side of the storage chamber away from the slurry separation assembly.

[0015] Furthermore, a wet pretreatment system and method for kitchen waste are characterized in that the method of use includes the following operational steps:

[0016] Step 1: Pour the wet waste and liquid into the solid-liquid separation unit through the waste inlet. The wet waste containing liquid falls onto the filter screen and moves along the inclined surface to the first feeding channel. The liquid passes through the wet waste and drips into the sewage inlet area, flowing into the sewage pipe through the sewage inlet. The wet waste comes into contact with the screw rod inside the first feeding channel, causing the screw rod to carry the wet waste upward.

[0017] Step 2: The screw rod inside the first feeding channel carries the wet waste into the pipeline conveying iron removal component. At this time, the wet waste moves along the waste conveying channel, and the metal-containing substances inside the wet waste are adsorbed above the iron removal adsorption channel below the waste conveying channel. When the wet waste is carried into the waste crushing component by the waste conveying channel, the metal adsorption channel adsorbs the metal substances and returns to the pipeline conveying iron removal component for metal stripping, and then the metal adsorption is repeated.

[0018] Step 3: When the wet waste is conveyed into the waste crushing assembly, the wet waste comes into contact with the first crushing roller inside the first crushing chamber. When the two sets of first crushing rollers rotate and mesh, the wet waste in the middle of the two sets of first crushing rollers is torn into small pieces, and the torn pieces of wet waste fall into the screening chamber.

[0019] Step 4: At this time, water is poured into the screening chamber along the water supply support. The drive motor drives the inclined screening screen to shake through the mounting shaft. At this time, wet waste smaller than the diameter of the inclined screening screen hole falls downward, while wet waste larger than the diameter of the inclined screening screen hole moves along the inclined surface. This allows the wet waste that is not completely torn to be transported and collected along the discharge channel, waiting for secondary crushing.

[0020] Step 5: Wet waste smaller than the diameter of the inclined screen mesh falls into the second crushing chamber and comes into contact with the second crushing roller. The second crushing roller grinds the wet waste into small particles. At this time, the wet waste is transported into the slurry separation component along the second feeding channel with the water source.

[0021] Step Six: When the small particles of wet waste enter the slurry separation component along with the water source, the small particles of wet waste enter the first separation chamber through the connecting pipe. The small particles of wet waste and the water source are separated by the internal filter screen, causing the small particles of wet waste to settle and be discharged. Meanwhile, the water source is drawn into the second separation chamber by the water pump for oil-water separation.

[0022] Step 7: The oil-water separated liquid enters the liquid storage component to complete the collection and storage of the liquid.

[0023] This invention provides a wet pretreatment system and method for kitchen waste, comprising the following features:

[0024] Beneficial effects:

[0025] This process separates the water contained within the wet waste into the solid-liquid separation component. After water separation, the wet waste enters a pipeline conveying and iron removal component to remove metal substances. Following metal removal, the waste enters the waste crushing component, where it undergoes initial crushing in the first crushing chamber. After crushing, the waste falls into a screening chamber for size separation. Larger pieces are sent to the discharge channel for further screening, while smaller pieces are sent to the second crushing chamber for further grinding. This process effectively grinds the waste into small particles, facilitating rapid removal of impurities in subsequent processing steps. The specific details are as follows:

[0026] The solid-liquid separation component has a waste inlet on its side, and a pipeline-type iron removal component is located on the side of the solid-liquid separation component away from the waste inlet. A waste crushing component is located on the side of the pipeline-type iron removal component away from the solid-liquid separation component. A slurry separation component is located on the side of the waste crushing component away from the pipeline-type iron removal component, and a liquid storage component is located on the side of the slurry separation component away from the waste crushing component. The solid-liquid separation component includes a collection chamber, a filter screen, a sewage inlet, a drain pipe, a first feeding channel, and a screw rod. A filter screen is bolted to the inner wall of the collection chamber on the side away from the waste crushing component, and a sewage inlet is located below the filter screen. A drain pipe is bolted to the bottom of the sewage inlet, and the sewage inlet is located away from the waste inlet. A first feeding component is provided on one side of the garbage inlet, and a screw rod is installed at the upper and lower ends of the inner wall of the first feeding component. The garbage crushing component includes a water supply bracket, a first fixed bracket, a first crushing chamber, a screening chamber, a second crushing chamber, a second fixed bracket, a docking bracket, and a second feeding channel. The first fixed bracket is provided above the two sets of water supply brackets, and the first crushing chamber is installed below the first fixed bracket by bolts. The screening chamber is installed below the first crushing chamber by bolts, and the second crushing chamber is installed below the screening chamber by bolts. The second fixed bracket is installed below the second crushing chamber. Two sets of docking brackets are provided on the side of the garbage crushing component away from the pipeline conveying iron removal component, and the second feeding channel is installed at the center of the two sets of docking brackets. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a wet pretreatment system for kitchen waste according to the present invention;

[0028] Figure 2 This is a front view cross-sectional structural schematic diagram of the solid-liquid separation component of a wet pretreatment system for kitchen waste according to the present invention.

[0029] Figure 3 This is a schematic diagram of the structure of a waste shredding component in a wet pretreatment system for kitchen waste according to the present invention;

[0030] Figure 4 This is a front view cross-sectional structural diagram of the first grinding chamber of a wet pretreatment system for kitchen waste according to the present invention;

[0031] Figure 5 This is a rear cross-sectional view of the iron removal assembly of the pipeline conveying system in a wet pretreatment system for kitchen waste according to the present invention.

[0032] Figure 6 This is a schematic diagram of the slurry separation component of a wet pretreatment system for kitchen waste according to the present invention;

[0033] Figure 7This is a schematic diagram of the liquid storage component of a wet pretreatment system for kitchen waste according to the present invention.

[0034] In the diagram: 1. Solid-liquid separation assembly; 2. Waste inlet; 3. Pipeline conveying and iron removal assembly; 4. Waste crushing assembly; 5. Slurry separation assembly; 6. Liquid storage assembly; 7. Motor chamber; 8. Waste conveying channel; 9. Iron removal and adsorption channel; 10. Water supply support; 1001. Water inlet pipe; 1002. Mounting shaft; 1003. Vibration chamber; 11. Collection chamber; 12. Filter screen; 13. Sewage inlet; 14. Sewage discharge pipe; 15. First feeding channel; 16. Screw rod; 17. First fixed support; 18. First crushing chamber; 19. Screening chamber; 1901, Mounting bracket; 20, Second crushing chamber; 21, Second fixed bracket; 22, Docking bracket; 23, Second feeding channel; 24, Drive motor; 25, Inclined screening screen; 26, Discharge channel; 27, First crushing roller; 28, Blocking bracket; 29, Second crushing roller; 30, Discharge port; 31, Placement chamber; 32, Connecting pipe; 33, First separation chamber; 34, Second separation chamber; 35, Liquid outlet pipe; 36, Dry material conveying channel; 37, Collection box; 38, Observation channel; 39, Storage chamber; 40, Conveying pipe. Detailed Implementation

[0035] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0036] like Figure 1 - Figure 7 As shown, the present invention provides a technical solution: a wet pretreatment system for kitchen waste, including a solid-liquid separation component 1 for separating dry and wet waste and a waste crushing component 4 for multiple waste crushing. The solid-liquid separation component 1 is provided with a waste inlet 2 on its side, and a pipeline iron removal component is provided on the side of the solid-liquid separation component 1 away from the waste inlet 2. The waste crushing component 4 is provided on the side of the pipeline conveying iron removal component 3 away from the solid-liquid separation component 1, and a slurry separation component 5 is provided on the side of the waste crushing component 4 away from the pipeline conveying iron removal component 3. A liquid storage component 6 is provided on the side of the slurry separation component 5 away from the waste crushing component 4.

[0037] The solid-liquid separation component 1 includes a collection chamber 11, a water filter screen 12, a sewage inlet 13, a sewage discharge pipe 14, a first feeding channel 15, and a screw rod 16. The water filter screen 12 is bolted to the side of the inner wall of the collection chamber 11 away from the waste crushing component 4. The sewage inlet 13 is located below the water filter screen 12. The sewage discharge pipe 14 is bolted to the bottom end of the sewage inlet 13. The first feeding component is located on the side of the sewage inlet 13 away from the waste inlet 2. The screw rod 16 is installed at the upper and lower ends of the inner wall of the first feeding component.

[0038] The waste crushing assembly 4 includes a water supply bracket 10, a first fixed bracket 17, a first crushing chamber 18, a screening chamber 19, a second crushing chamber 20, a second fixed bracket 21, a docking bracket 22, and a second feeding channel 23. The first fixed bracket 17 is provided above the two sets of water supply brackets 10. The first crushing chamber 18 is bolted to the bottom of the first fixed bracket 17. The screening chamber 19 is bolted to the bottom of the first crushing chamber 18. The second crushing chamber 20 is bolted to the bottom of the screening chamber 19. The second fixed bracket 21 is installed below the second crushing chamber 20. Two sets of docking brackets 22 are provided on the side of the waste crushing assembly 4 away from the pipeline conveying iron removal assembly 3. The second feeding channel 23 is installed at the center of the two sets of docking brackets 22.

[0039] The water supply support 10 includes a water inlet pipe 1001, a vibration chamber 1003, a mounting shaft 1002, a drive motor 24, and a discharge channel 26. The vibration chamber 1003 is located below the water inlet pipe 1001, and the mounting shaft 1002 is located below the vibration chamber 1003. The drive motor 24 is bolted to the side of the mounting shaft 1002 away from the slurry separation component 5, and the discharge channel 26 is located on the side of the mounting shaft 1002 away from the water inlet pipe 1001.

[0040] The slurry separation component 5 includes a connecting pipe 32, a first separation chamber 33, a second separation chamber 34, a liquid outlet pipe 35, a dry material conveying channel 36, and a collection box 37. The first separation chamber 33 is located on the side of the connecting pipe 32 away from the waste crushing component 4, and the second separation chamber 34 is located below the first separation chamber 33. The liquid outlet pipe 35 is located on the side of the second separation chamber 34 away from the connecting pipe 32, and the dry material conveying channel 36 is located on the left side of the liquid outlet pipe 35. The collection box 37 is located on the side of the dry material conveying channel 36 away from the liquid outlet pipe 35. The method of separating dry and wet materials in the first separation chamber 33 is centrifugal separation, which reduces the moisture content of the dry waste while separating the dry and wet materials.

[0041] The pipeline conveying iron removal assembly 3 includes a motor chamber 7, a waste conveying channel 8, and an iron removal adsorption channel 9. The waste conveying channel 8 is located on the right side of the motor chamber 7, and the iron removal adsorption channel 9 is located below the waste conveying channel 8. When the iron removal adsorption channel 9, which adsorbs metal substances, rotates to the bottom, the baffle located below the iron removal adsorption channel 9 comes into contact with the contact surface of the iron removal adsorption channel 9 that adsorbs metal substances. When the iron removal adsorption channel 9 moves the metal substances, the metal substances in contact with the baffle are blocked and peeled off.

[0042] The first crushing chamber 18 includes a first crushing roller 27 and a blocking bracket 28. The blocking bracket 28 is provided on the side of both sets of first crushing rollers 27 away from the center. The outer surface of the first crushing rollers 27 is provided with teeth. The two sets of first crushing rollers 27 mesh with each other through the teeth. The second crushing chamber 20 includes a second crushing roller 29, a discharge port 30 and a placement chamber 31. The discharge port 30 is provided on the side of the second crushing roller 29 away from the drive motor 24. The placement chamber 31 is provided below the discharge port 30.

[0043] The screening chamber 19 includes a mounting bracket 1901 and an inclined screening screen 25. The inclined screening screen 25 is installed on the inner wall of the mounting bracket 1901 twice by bolts, and the inclined surface of the inclined screening screen 25 is close to the discharge channel 26.

[0044] The liquid storage assembly 6 includes an observation channel 38, a storage chamber 39, and a conveying pipe 40. The storage chamber 39 is located below the observation channel 38, and the conveying pipe is located on the side of the storage chamber 39 away from the slurry separation assembly 5.

[0045] A wet pretreatment system and method for kitchen waste, characterized in that the method of use includes the following operating steps:

[0046] Step 1: Pour the wet waste and liquid into the solid-liquid separation component 1 through the waste inlet 2. The wet waste containing liquid falls onto the filter screen 12 and moves along the inclined surface to the first feeding channel 15. The liquid passes over the wet waste, passes through the filter screen 12, and drips into the sewage inlet 13 area. It then flows into the sewage pipe 14 through the sewage inlet 13. The wet waste comes into contact with the screw rod 16 inside the first feeding channel 15, causing the screw rod 16 to carry the wet waste upward.

[0047] Step 2: The spiral rod 16 inside the first feeding channel 15 carries the wet waste into the pipeline conveying iron removal assembly 3. At this time, the wet waste moves along the waste conveying channel 8, and the metal-containing substances inside the wet waste are adsorbed above the iron removal adsorption channel 9 below the waste conveying channel 8. When the wet waste is carried into the waste crushing assembly 4 by the waste conveying channel 8, the metal adsorption channel 9 adsorbs the metal substances and returns to the pipeline conveying iron removal assembly 3 for metal stripping, and then the metal adsorption is repeated.

[0048] Step 3: When the wet waste is conveyed into the waste crushing assembly 4, the wet waste comes into contact with the first crushing roller 27 inside the first crushing chamber 18. When the two sets of first crushing rollers 27 rotate and mesh, the wet waste in the middle of the two sets of first crushing rollers 27 is torn into small pieces, and the torn wet waste falls into the screening chamber 19.

[0049] Step 4: At this time, water is poured into the screening chamber 19 along the water supply support 10. At this time, the drive motor 24 drives the inclined screening screen 25 to vibrate through the mounting shaft 1002. At this time, wet waste smaller than the diameter of the inclined screening screen 25 holes falls downward, while wet waste larger than the diameter of the inclined screening screen 25 holes moves along the inclined surface, so that the wet waste that is not completely torn is transported along the discharge channel 26 for collection, waiting for secondary crushing.

[0050] Step 5: Wet waste smaller than the diameter of the inclined screen 25 falls into the second crushing chamber 20 and comes into contact with the second crushing roller 29. The second crushing roller 29 grinds the wet waste into small particles. At this time, the wet waste is transported into the slurry separation component 5 along the second feeding channel 23 with the water source.

[0051] Step Six: When the small particles of wet waste enter the slurry separation component 5 along with the water source, the small particles of wet waste enter the first separation chamber 33 along the connecting pipe 32. The small particles of wet waste and the water source are separated by the internal filter screen, causing the small particles of wet waste to settle and be discharged. Meanwhile, the water source is drawn into the second separation chamber 34 by the water pump for oil-water separation.

[0052] Step 7: The liquid that has completed oil-water separation enters the liquid storage component 6 to complete the storage of the liquid in the collection box 37.

[0053] In summary, as Figure 1-7As shown, in this wet pretreatment system and method for kitchen waste, when in use, the wet waste and the liquid in it are poured into the solid-liquid separation component 1 through the waste inlet 2. The wet waste containing liquid falls onto the filter screen 12 and moves along the inclined surface to the position of the first feeding channel 15. The liquid passes over the wet waste, passes through the filter screen 12, and drips into the sewage inlet 13 area. It then flows into the sewage pipe 14 through the sewage inlet 13. The wet waste comes into contact with the screw rod 16 inside the first feeding channel 15, causing the screw rod 16 to carry the wet waste upward.

[0054] The wet waste is carried into the pipeline conveying iron removal assembly 3 by the screw rod 16 inside the first feeding channel 15. At this time, the wet waste moves along the waste conveying channel 8, and the metal-containing substances inside the wet waste are adsorbed above the iron removal adsorption channel 9 below the waste conveying channel 8. When the wet waste is carried into the waste crushing assembly 4 by the waste conveying channel 8, the metal adsorption channel 9 adsorbs the metal substances and returns to the pipeline conveying iron removal assembly 3 for metal stripping, and then recycles for metal adsorption.

[0055] When wet waste is conveyed into the waste crushing assembly 4, the wet waste comes into contact with the first crushing roller 27 inside the first crushing chamber 18. When the two sets of first crushing rollers 27 rotate and mesh, the wet waste in the middle of the two sets of first crushing rollers 27 is torn into small pieces, and the torn wet waste falls into the screening chamber 19.

[0056] At this time, water is poured into the screening chamber 19 along the water supply support 10. At this time, the drive motor 24 drives the inclined screening screen 25 to vibrate through the mounting shaft 1002. At this time, wet waste smaller than the diameter of the inclined screening screen 25 holes falls downward, while wet waste larger than the diameter of the inclined screening screen 25 holes moves along the inclined surface, so that the wet waste that is not completely torn is transported along the discharge channel 26 for collection, waiting for secondary crushing.

[0057] Wet waste smaller than the diameter of the inclined screen 25 falls into the second crushing chamber 20 and comes into contact with the second crushing roller 29. The second crushing roller 29 grinds the wet waste into small particles. At this time, the wet waste is transported into the slurry separation component 5 along the second feeding channel 23 with the water source.

[0058] When the small particles of wet waste enter the slurry separation component 5 along with the water source, the small particles of wet waste enter the first separation chamber 33 along the connecting pipe 32. The small particles of wet waste and the water source are separated by the internal filter screen, causing the small particles of wet waste to settle and be discharged. Meanwhile, the water source is drawn into the second separation chamber 34 by the water pump for oil-water separation.

[0059] The liquid that has completed oil-water separation enters the liquid storage component 6 and is then stored in the collection box 37.

[0060] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A wet pretreatment system for kitchen waste, comprising a solid-liquid separation component (1) for separating dry and wet waste and a waste pulverizing component (4) for multiple waste pulverization processes, characterized in that: The solid-liquid separation component (1) is provided with a garbage inlet (2) on its side, and a pipeline iron removal component is provided on the side of the solid-liquid separation component (1) away from the garbage inlet (2). The garbage crushing component (4) is located on the side of the pipeline conveying iron removal component (3) away from the solid-liquid separation component (1). A slurry separation component (5) is provided on the side of the garbage crushing component (4) away from the pipeline conveying iron removal component (3). A liquid storage component (6) is provided on the side of the slurry separation component (5) away from the garbage crushing component (4). The solid-liquid separation component (1) includes a collection chamber (11), a filter screen (12), a sewage inlet (13), a drain pipe (14), a first feeding channel (15), and a screw rod (16). The filter screen (12) is bolted to the side of the inner wall of the collection chamber (11) away from the garbage crushing component (4). The sewage inlet (13) is located below the filter screen (12). The drain pipe (14) is bolted to the bottom of the sewage inlet (13). The first feeding component is located on the side of the sewage inlet (13) away from the garbage inlet (2). The screw rod (16) is installed at the upper and lower ends of the inner wall of the first feeding component. The waste crushing assembly (4) includes a water supply bracket (10), a first fixed bracket (17), a first crushing chamber (18), a screening chamber (19), a second crushing chamber (20), a second fixed bracket (21), a docking bracket (22), and a second feeding channel (23). The first fixed bracket (17) is provided above the two sets of water supply brackets (10), and the first crushing chamber (18) is installed below the first fixed bracket (17) by bolts. The screening chamber (19) is installed below the first crushing chamber (18) by bolts. The second crushing chamber (20) is installed below the screening chamber (19) by bolts. The second fixed bracket (21) is installed below the second crushing chamber (20). Two sets of docking brackets (22) are provided on the side of the waste crushing assembly (4) away from the pipeline conveying iron removal assembly (3), and the second feeding channel (23) is installed at the center of the two sets of docking brackets (22). The pipeline conveying iron removal assembly (3) includes a motor chamber (7), a waste conveying channel (8) and an iron removal adsorption channel (9), and the waste conveying channel (8) is provided on the right side of the motor chamber (7), and the iron removal adsorption channel (9) is provided below the waste conveying channel (8). The slurry separation component (5) includes a connecting pipe (32), a first separation chamber (33), a second separation chamber (34), a liquid outlet pipe (35), a dry material conveying channel (36), and a collection box (37). The first separation chamber (33) is located on the side of the connecting pipe (32) away from the waste crushing component (4), and the second separation chamber (34) is located below the first separation chamber (33). The liquid outlet pipe (35) is located on the side of the second separation chamber (34) away from the connecting pipe (32), and the dry material conveying channel (36) is located on the left side of the liquid outlet pipe (35). The collection box (37) is located on the side of the dry material conveying channel (36) away from the liquid outlet pipe (35).

2. The wet pretreatment system for kitchen waste according to claim 1, characterized in that: The water supply support (10) includes a water inlet pipe (1001), a vibration chamber (1003), a mounting shaft (1002), a drive motor (24), and a discharge channel (26). The vibration chamber (1003) is located below the water inlet pipe (1001), and the mounting shaft (1002) is located below the vibration chamber (1003). The drive motor (24) is bolted to the side of the mounting shaft (1002) away from the slurry separation component (5), and the discharge channel (26) is located on the side of the mounting shaft (1002) away from the water inlet pipe (1001).

3. The wet pretreatment system for kitchen waste according to claim 2, characterized in that: The first crushing chamber (18) includes a first crushing roller (27) and a blocking bracket (28), and the blocking bracket (28) is provided on the side away from the center of both sets of the first crushing rollers (27), and the outer surface of the first crushing rollers (27) is provided with teeth, and the two sets of the first crushing rollers (27) mesh with each other through the teeth. The second crushing chamber (20) includes a second crushing roller (29), a discharge port (30) and a placement chamber (31), and the discharge port (30) is provided on the side of the second crushing roller (29) away from the drive motor (24), and the placement chamber (31) is provided below the discharge port (30).

4. The wet pretreatment system for kitchen waste according to claim 3, characterized in that: The screening chamber (19) includes a mounting bracket (1901) and an inclined screening screen (25), and the inclined screening screen (25) is installed on the inner wall of the mounting bracket (1901) twice by bolts, and the inclined surface of the inclined screening screen (25) is close to the discharge channel (26).

5. The wet pretreatment system for kitchen waste according to claim 4, characterized in that: The liquid storage assembly (6) includes an observation channel (38), a storage chamber (39) and a delivery pipe (40), and the storage chamber (39) is located below the observation channel (38), and the delivery pipe (40) is located on the side of the storage chamber (39) away from the slurry separation assembly (5).

6. The pretreatment method of a wet pretreatment system for kitchen waste according to claim 5, characterized in that: The method includes the following steps: Step 1: Pour the wet waste and liquid into the solid-liquid separation component (1) through the waste inlet (2). The wet waste containing liquid falls onto the filter screen (12). The wet waste moves along the inclined surface to the first feeding channel (15), while the liquid passes through the filter screen (12) and drips into the sewage inlet (13) area. It flows into the sewage pipe (14) through the sewage inlet (13). The wet waste comes into contact with the screw rod (16) inside the first feeding channel (15), causing the screw rod (16) to carry the wet waste upward. Step 2: The spiral rod (16) inside the first feeding channel (15) carries the wet waste into the pipeline conveying iron removal assembly (3). At this time, the wet waste moves along the waste conveying channel (8), and the metal-containing substances inside the wet waste are adsorbed above the iron removal adsorption channel (9) below the waste conveying channel (8). When the wet waste is carried into the waste crushing assembly (4) by the waste conveying channel (8), the adsorbed metal substances in the iron removal adsorption channel (9) return to the pipeline conveying iron removal assembly (3) for metal stripping, and then the metal adsorption is re-circulated. Step 3: When the wet waste is conveyed into the waste crushing assembly (4), the wet waste comes into contact with the first crushing roller (27) inside the first crushing chamber (18). When the two sets of first crushing rollers (27) rotate and mesh, the wet waste in the middle of the two sets of first crushing rollers (27) is torn into small pieces, and the torn wet waste falls into the screening chamber (19). Step 4: At this time, water is poured into the screening chamber (19) along the water supply support (10). At this time, the drive motor (24) drives the inclined screen (25) to shake through the mounting shaft (1002). At this time, wet waste smaller than the diameter of the inclined screen (25) holes falls downward, while wet waste larger than the diameter of the inclined screen (25) holes moves along the inclined surface, so that the wet waste that is not completely torn is transported along the discharge channel (26) for collection, waiting for secondary crushing. Step 5: Wet waste smaller than the diameter of the inclined screen (25) falls into the second crushing chamber (20) and comes into contact with the second crushing roller (29). The second crushing roller (29) grinds the wet waste into small particles. At this time, the wet waste is transported into the slurry separation component (5) along the second feeding channel (23) with the water source. Step 6: When the small particles of wet waste enter the slurry separation component (5) along with the water source, the small particles of wet waste enter the first separation chamber (33) along the connecting pipe (32). The small particles of wet waste and the water source are separated by the internal filter screen, causing the small particles of wet waste to settle and be discharged. The water source is adsorbed by the water pump and enters the second separation chamber (34) for oil-water separation. Step 7: The liquid that has completed oil-water separation enters the liquid storage component (6) to complete the storage of the liquid in the collection box (37).

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