Solid-liquid and oil-water separation pretreatment device for wet garbage

Abstract

The solid-liquid and oil-water separation pretreatment device comprises a support, a water accumulation bin, an installation frame, a liquid pump and an oil-water separator, an extrusion opening and a discharging opening are formed in the two sides of the water accumulation bin respectively, a discharging pipe is installed on the discharging opening, a sealing plate is installed on the discharging pipe, and the oil-water separator is installed on the installation frame. A position sensor is installed on the water accumulation bin, an extrusion bin is fixedly connected to the inner wall of the side, close to the extrusion opening, of the water accumulation bin, a material level sensor is installed on the extrusion bin, a feeding hopper is installed on the top of the extrusion bin, a discharging valve is installed on the lower section of the feeding hopper, and a liquid pumping pipe and a liquid guiding pipe are installed on the liquid pump. And a dewatering assembly is arranged on the mounting frame. The solid-liquid separation and oil-water separation treatment work of wet garbage can be completed at the same time, other equipment is not needed, the garbage material amount can be monitored in real time so that it can be guaranteed that material blocking cannot occur, and meanwhile material supplementing can be conducted in real time.

Description

Technical Field

[0001] The utility model belongs to the technical field of wet garbage treatment, in particular to a solid-liquid and oil-water separation pretreatment device for wet garbage. Background Art

[0002] Wet garbage is waste generated by household activities and catering services that contains large amounts of organic matter and water. It primarily includes food scraps, fruit peels, vegetable leaves, tea leaves, eggshells, and more. This type of waste is prone to rotting and fermenting, producing odors and bacteria, and therefore requires proper disposal.

[0003] At present, there are some garbage disposal equipment on the market. For example, a garbage disposal device that can handle multiple types of garbage is disclosed on the China Patent Network, and its announcement number is CN215435132U. This garbage disposal device does not require manual operation during garbage disposal, which reduces the workload of operators. However, there are some defects and deficiencies that need to be improved: (1) Some existing garbage disposal equipment is difficult to pre-treat the moisture before wet garbage disposal, making it impossible to separate the solid and liquid parts of wet garbage, which brings great inconvenience to subsequent garbage collection and transportation. Although some equipment can perform solid-liquid separation, the separated water often contains oil, requiring additional oil-water separation treatment; (2) Due to the lack of solid-liquid separation function, some existing garbage disposal equipment can only use other equipment to dehydrate wet garbage, which requires a large amount of additional energy, resulting in waste and is not conducive to energy conservation and environmental protection; (3) Some existing garbage disposal equipment is difficult to monitor the amount of garbage material in the treatment equipment in real time. When too much material is accumulated, it cannot be automatically discharged, which will cause material blockage. Therefore, in order to solve the above problems, the solid-liquid and oil-water separation pretreatment device for wet garbage provided by the present invention is of great significance. Utility Model Content

[0004] The utility model provides a solid-liquid and oil-water separation pretreatment device for wet garbage, which can squeeze and dehydrate the wet garbage through the dehydration component so as to perform solid-liquid separation treatment on the wet garbage, and the oil-water mixture obtained after squeezing and dehydration can be introduced into the oil-water separator so as to perform oil-water separation treatment through the oil-water separator; the solid-liquid separation and oil-water separation treatment of the wet garbage can be completed simultaneously through the dehydration component and the oil-water separator without the aid of other equipment, thereby effectively reducing the consumption of additional energy, avoiding waste, and being beneficial to energy saving and environmental protection; the amount of garbage material in the feed hopper and the extrusion bin can be monitored in real time through the material level sensor and the position sensor to ensure that the motor will not be overloaded or blocked by excessive material accumulation in the feed hopper and the extrusion bin, and at the same time, material can be replenished in real time, thereby ensuring the continuity of garbage material extrusion, and in summary, the problems in the background technology are solved.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model is a solid-liquid and oil-water separation pretreatment device for wet garbage, comprising a bracket, a water storage bin, a mounting frame, a liquid pump, and an oil-water separator. The water storage bin, the mounting frame, the liquid pump, and the oil-water separator are all mounted on the bracket. An extrusion port and a discharge port are respectively provided on both sides of the water storage bin. A discharge pipe is mounted on the discharge port, and a sealing plate is mounted on the discharge pipe. The sealing plate and the pipe mouth of the discharge pipe are hinged together by a hinge structure, and a support is fixedly connected to the sealing plate. A position sensor is installed on the upper part, and the inner wall of the water storage bin close to the extrusion port is fixedly connected to the extrusion bin, a material level sensor is installed on the extrusion bin, and a feed hopper is installed on the top of the extrusion bin, and a discharge valve is installed on the lower part of the feed hopper. A liquid suction pipe and a liquid guide pipe are respectively installed on the liquid pump, and the other end of the liquid suction pipe is fixedly connected to the side wall of the water storage bin and extends into the water storage bin. The other end of the liquid guide pipe is installed on the oil-water separator, and a dehydration component is provided on the mounting frame;

[0007] The dehydration assembly includes a reducer, a piston barrel and a filter screen. The reducer is installed on the top of the mounting frame, and a motor is installed on the top of the reducer. The output shaft of the motor is installed on the input shaft of the reducer through a coupling. The end of the output shaft of the reducer is fixedly connected to a transmission block, and a connecting rod is rotatably connected to the transmission block. The piston barrel is located in the extrusion port, and the inner wall of the bottom end is fixedly connected to the piston rod. The other end of the piston rod is fixedly connected to a hinge seat, and the other end of the connecting rod is hinged to the hinge seat. The filter screen is sleeved on the piston barrel, and the two ends of the filter screen are respectively installed on the extrusion port and the discharge port.

[0008] Furthermore, a card slot is provided on both sides of the extrusion bin, the card slot is semicircular, the diameter of the card slot is equal to the diameter of the filter screen, and the centers of the card slot, the extrusion port and the discharge port are all located on the same straight line.

[0009] Furthermore, the cross section of the filter screen is circular, the outer diameter of the filter screen is equal to the diameters of the extrusion port and the discharge port, and flanges are fixedly connected to both ends of the filter screen.

[0010] Furthermore, a plurality of reinforcement rings are fixedly connected to the filter screen, and the reinforcement rings are linearly and equidistantly distributed along the length direction of the filter screen.

[0011] Furthermore, a plurality of reinforcing plates are fixedly connected to the rod body of the piston rod, the other side of the reinforcing plates is fixedly connected to the inner wall of the piston barrel, and the reinforcing plates are equidistantly distributed in an annular shape along the circumferential direction of the piston rod.

[0012] Furthermore, the piston barrel is cylindrical, and its outer diameter is equal to the inner diameter of the filter screen, and the centers of the piston barrel, the extrusion port and the card slot are located on the same straight line.

[0013] Furthermore, a mounting seat is fixedly connected to the outer wall of the water storage bin on the side close to the discharge port, a hydraulic cylinder is installed on the mounting seat, and the output shaft end of the hydraulic cylinder is fixedly connected to the support.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The solid-liquid and oil-water separation pretreatment device for wet garbage in the present invention can squeeze and dehydrate the wet garbage through the dehydration component to perform solid-liquid separation on the wet garbage, and the oil-water mixture obtained after squeezing and dehydration can be introduced into the oil-water separator to perform oil-water separation by the oil-water separator;

[0016] (2) When the solid-liquid and oil-water separation pretreatment device for wet garbage in the utility model is used, the solid-liquid separation and oil-water separation treatment of wet garbage can be completed simultaneously through the dehydration component and the oil-water separator without the need for other equipment, thereby effectively reducing the consumption of additional energy, avoiding waste, and being beneficial to energy conservation and environmental protection;

[0017] (3) When the solid-liquid and oil-water separation pretreatment device for wet garbage in the utility model is in use, the amount of garbage material in the feed hopper and the extrusion bin can be monitored in real time through the material level sensor and the position sensor to ensure that the motor will not be overloaded or blocked by excessive material accumulation in the feed hopper and the extrusion bin, and at the same time, material can be replenished in real time, thereby ensuring the continuity of garbage material extrusion.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a front structural diagram of a solid-liquid and oil-water separation pretreatment device for wet garbage according to the present invention;

[0021] Figure 2 This is a schematic diagram of the back structure of a solid-liquid and oil-water separation pretreatment device for wet garbage according to the present invention;

[0022] Figure 3 This is a schematic structural diagram of the dehydration component in the present utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the water storage bin and the extrusion bin in the utility model;

[0024] Figure 5 This is a schematic structural diagram of the piston barrel in the utility model;

[0025] Figure 6 It is a structural schematic diagram of the filter screen in this utility model.

[0026] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0027] 1. Bracket; 2. Water storage bin; 3. Mounting frame; 4. Liquid pump; 5. Oil-water separator; 6. Extrusion port; 7. Discharge port; 8. Discharge pipe; 9. Sealing plate; 10. Support; 11. Position sensor; 12. Extrusion bin; 13. Level sensor; 14. Feed hopper; 15. Discharge valve; 16. Liquid extraction pipe; 17. Liquid guide pipe; 18. Reducer; 19. Piston barrel; 20. Filter screen; 21. Motor; 22. Transmission block; 23. Connecting rod; 24. Piston rod; 25. Articulated seat; 26. Slot; 27. Flange; 28. Reinforcement ring; 29. ​​Reinforcement plate; 30. Mounting seat; 31. Hydraulic cylinder. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that terms such as "relative", "one end", "inside", "lateral", "end", "two ends", "both sides", "front", "one end face", "the other end face" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] See also Figure 1-6As shown, the utility model is a solid-liquid and oil-water separation pretreatment device for wet garbage, including a bracket 1, a water storage bin 2, a mounting frame 3, a liquid pump 4, and an oil-water separator 5. The water storage bin 2, the mounting frame 3, the liquid pump 4 and the oil-water separator 5 are all installed on the bracket 1. An extrusion port 6 and a discharge port 7 are respectively provided on both sides of the water storage bin 2. A discharge pipe 8 is installed on the discharge port 7, and a sealing plate 9 is installed on the discharge pipe 8. The sealing plate 9 and the pipe mouth of the discharge pipe 8 are hinged together by a hinge structure, and a support 10 is fixedly connected to the sealing plate 9. A position sensor 11 is installed on the water storage bin 2, and the amount of garbage material can be monitored in real time by the position sensor 11. The water storage bin 2 is close to the extrusion port. 6. The inner wall on one side is fixedly connected with an extrusion bin 12, and a material level sensor 13 is installed on the extrusion bin 12. A feed hopper 14 is installed on the top of the extrusion bin 12. A lifting device can be installed on the feed hopper 14. The lifting device can lift the garbage bin filled with wet garbage upward and dump the wet garbage in the garbage bin into the feed hopper 14, so that the wet garbage can be introduced into the extrusion bin 12 through the feed hopper 14. A discharge valve 15 is installed at the lower section of the feed hopper 14. The discharge valve 15 can be electrically connected to the material level sensor 13 through a wire. When the garbage material in the extrusion bin 12 reaches the material level, the discharge valve 15 can be controlled by the material level sensor 13 and automatically closed, and the discharge is stopped at this time. When the material level in the extrusion bin 12 is lower than the sensing area of ​​the material level sensor 13, the discharge valve 15 is automatically opened and the extrusion bin 12 is replenished through the feed hopper 14. The liquid pump 4 is respectively equipped with a liquid extraction pipe 16 and a liquid guide pipe 17. The other end of the liquid extraction pipe 16 is fixedly connected to the side wall of the water storage bin 2 and extends into the water storage bin 2. The other end of the liquid guide pipe 17 is installed on the oil-water separator 5. By driving the liquid pump 4, the oil-water mixture after solid-liquid separation by the dehydration component can be sucked into the liquid extraction pipe 16 and introduced into the oil-water separator 5 through the liquid guide pipe 17. The oil-water separator 5 is a prior art, and its main structure includes a water inlet, a primary filter, an oil-water separation area, The sludge collector, water outlet, grease collection container, etc., the liquid guide pipe 17 is connected to the water inlet on the oil-water separator 5. When the oil-water mixture enters the oil-water separator 5 through the liquid guide pipe 17 and the water inlet, the primary filter can remove large particles of impurities in the oil-water mixture. At this time, the flow rate of the wastewater in the oil-water separation area is slowed down, and the heavier solid particles are settled into the sludge collector due to gravity. Since the density of grease is smaller than that of water, when the water flow rate is slowed down, the grease floats to the water surface and is collected by the grease collection container. The separated clean water flows out from the bottom of the oil-water separation area and is discharged through the water outlet, thereby completing the oil-water separation. A dehydration component is provided on the mounting frame 3;

[0031] The dehydration assembly includes a reducer 18, a piston barrel 19 and a filter 20. The reducer 18 is installed on the top of the mounting frame 3, and a motor 21 is installed on the top of the reducer 18. The output shaft of the motor 21 is installed on the input shaft of the reducer 18 through a coupling. The end of the output shaft of the reducer 18 is fixedly connected to a transmission block 22, and the transmission block 22 is rotatably connected to the connecting rod 23. The piston barrel 19 is located in the extrusion port 6, and the inner wall of its bottom end is fixedly connected to a piston rod 24. The other end of the piston rod 24 is fixedly connected to a hinge seat 25, and the other end of the connecting rod 23 is hinged to the hinge seat 25. The filter 20 is sleeved on the piston barrel 19, and the two ends of the filter 20 are respectively installed on the extrusion port 6 and the discharge port 7. The transmission block 22 can be driven together with the drive motor 21. The connecting rod 23 rotates together. At this time, the transmission structure between the connecting rod 23 and the piston rod 24 can drive the piston rod 24 to perform reciprocating piston motion together with the piston barrel 19. A closed extrusion space is formed between the piston barrel 19 and the inner wall of the extrusion chamber 12 and the sealing plate 9 on the discharge port 7. When the piston barrel 19 performs reciprocating piston motion, the wet garbage material entering the extrusion chamber 12 can be dehydrated and squeezed through the piston barrel 19. At this time, the squeezed filtrate can flow into the water storage bin 2 through the filter screen 20, and the solid garbage remains in the filter screen 20. Thereafter, the solid garbage can be pushed toward the discharge port 7 by the piston barrel 19, thereby completing the solid-liquid separation of the wet garbage without the aid of other equipment, effectively reducing the consumption of additional energy, avoiding waste, and being beneficial to energy saving and environmental protection.

[0032] Among them, there is a card slot 26 on both sides of the extrusion bin 12. The card slot 26 is semicircular, and its diameter is equal to the diameter of the filter screen 20. The centers of the card slot 26, the extrusion port 6 and the discharge port 7 are all located on the same straight line. The filter screen 20 can pass through the card slot 26 and extend into the extrusion bin 12.

[0033] Among them, the cross-section of the filter screen 20 is circular, and its outer diameter is equal to the diameter of the extrusion port 6 and the discharge port 7, and both ends of the filter screen 20 are fixedly connected with flanges 27, which can be used to fix the two ends of the filter screen 20 on the extrusion port 6 and the discharge port 7.

[0034] Among them, several reinforcement rings 28 are fixedly connected to the filter screen 20, and the reinforcement rings 28 are linearly and equidistantly distributed along the length direction of the filter screen 20. The reinforcement rings 28 can reinforce the filter screen 20 to prevent the filter screen 20 from being deformed under the extrusion of the piston barrel 19.

[0035] Among them, the rod body of the piston rod 24 is fixedly connected to several reinforcement plates 29, the other side of the reinforcement plate 29 is fixedly connected to the inner wall of the piston barrel 19, and the reinforcement plates 29 are distributed in an equidistant ring shape along the circumferential direction of the piston rod 24. The piston barrel 19 can be reinforced by the reinforcement plates 29 to prevent the piston barrel 19 from being deformed due to long-term squeezing and collision.

[0036] Among them, the piston barrel 19 is cylindrical, and its outer diameter is equal to the inner diameter of the filter 20, and the piston barrel 19 is located on the same straight line as the center of the extrusion port 6 and the card slot 26. The piston barrel 19 can perform reciprocating piston motion along the inner wall of the filter 20 to squeeze out the moisture in the wet garbage and allow it to flow through the filter 20.

[0037] Among them, the outer wall of the water accumulation bin 2 near the discharge port 7 is fixedly connected to a mounting base 30, and a hydraulic cylinder 31 is installed on the mounting base 30. The end of the output shaft of the hydraulic cylinder 31 is fixedly connected to the support 10. The hydraulic cylinder 31 can be electrically connected to the position sensor 11 through a wire. When the position sensor 11 detects that the dehydrated garbage is squeezed and accumulated to a certain position, it can control and drive the hydraulic cylinder 31 to automatically open the sealing plate 9 on the discharge pipe 8 for discharge. When the garbage material is discharged, the sealing plate 9 can be automatically closed, thereby ensuring that the motor 21 will not be overloaded or blocked by material due to excessive accumulation of garbage material in the extrusion bin 12.

[0038] The circuits, electronic components and chip modules involved in the present invention are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0039] The standard parts used in the application documents can all be purchased on the market. All components in this application document can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. The electrical components appearing in this article are all connected to the external main controller and 220V AC power, and the main controller can be a conventional known device that controls the LED lamp body, etc.

[0040] The working principle of this utility model is:

[0041] When the present invention is in use, firstly, the electrical components in the device are connected to the external control switch and power supply through wires, and then the garbage bin containing wet garbage is lifted upwards through the external lifting device, and the wet garbage in the garbage bin is dumped into the feed hopper 14, so that the wet garbage can be introduced into the extrusion bin 12 through the feed hopper 14. When the wet garbage enters the extrusion bin 12, the driving motor 21 can drive the transmission block 22 to rotate together with the connecting rod 23. At this time, the transmission structure between the connecting rod 23 and the piston rod 24 can drive the piston rod 24 to perform reciprocating piston movement together with the piston barrel 19. A closed extrusion space is formed between the piston barrel 19 and the inner wall of the extrusion bin 12 and the sealing plate 9 on the discharge port 7. When the piston barrel 19 performs reciprocating piston movement, the piston barrel 19 is reciprocating piston-driven. The piston barrel 19 can dehydrate and squeeze the wet garbage material entering the squeezing bin 12. At this time, the squeezed filtrate can flow into the water storage bin 2 through the filter screen 20, and the solid garbage remains in the filter screen 20. Thereafter, the piston barrel 19 can push the solid garbage to move toward the discharge port 7, thereby completing the solid-liquid separation of the wet garbage without the aid of other equipment, effectively reducing the consumption of additional energy, avoiding waste, and being beneficial to energy conservation and environmental protection. A discharge valve 15 is installed at the lower section of the feed hopper 14. The discharge valve 15 can be electrically connected to the material level sensor 13 through a wire. When the garbage material in the squeezing bin 12 reaches the material level, the material level sensor 13 can control the discharge valve 15 and make it automatically close, and the material discharge is stopped at this time. When the material level in the squeezing bin 12 is lower than the material level sensor 13, the discharge valve 15 is automatically closed. When the sensing area is reached, the discharge valve 15 is automatically opened and the extrusion bin 12 is replenished through the feed hopper 14. A position sensor 11 is installed on the water storage bin 2. The amount of garbage material can be monitored in real time through the position sensor 11. When the position sensor 11 detects that the dehydrated garbage is squeezed and accumulated to a certain position, it can control and drive the hydraulic cylinder 31 to automatically open the sealing plate 9 on the discharge pipe 8 for discharge. When the garbage material is discharged, the sealing plate 9 can be automatically closed, thereby ensuring that the motor 21 will not be overloaded or blocked by the material due to excessive accumulation of garbage material in the extrusion bin 12. The oil-water mixture after solid-liquid separation by the dehydration component can be sucked into the liquid extraction pipe 16 by driving the liquid pump 4, and introduced into the oil-water separation through the liquid guide pipe 17. Among the machines 5, the oil-water separator 5 is of existing technology, and its main structure includes a water inlet, a primary filter, an oil-water separation zone, a sludge collector, a water outlet, a grease collection container, etc. The liquid guide pipe 17 is connected to the water inlet on the oil-water separator 5. When the oil-water mixture enters the oil-water separator 5 through the liquid guide pipe 17 and the water inlet, the primary filter can remove large particles of impurities in the oil-water mixture. At this time, the flow rate of the wastewater in the oil-water separation zone slows down, and the heavier solid particles settle into the sludge collector due to gravity. Since the density of grease is smaller than that of water, when the water flow rate slows down, the grease floats to the water surface and is collected by the grease collection container. The separated clean water flows out from the bottom of the oil-water separation zone and is discharged through the water outlet, thereby completing the oil-water separation.

[0042] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A solid-liquid and oil-water separation pretreatment device for wet garbage, characterized in that: and a tube connecting the discharging opening of the pump with a plug in the outlet and the feed outlet is connected with the tube which connects the pump to the oil drain plug, and the tube which connects the pump to the oil drain plug is connected with the outlet of the pump. The dehydration assembly includes a reducer, a piston barrel and a filter screen. The reducer is installed on the top of the mounting frame, and a motor is installed on the top of the reducer. The output shaft of the motor is installed on the input shaft of the reducer through a coupling. The end of the output shaft of the reducer is fixedly connected to a transmission block, and a connecting rod is rotatably connected to the transmission block. The piston barrel is located in the extrusion port, and the inner wall of the bottom end is fixedly connected to the piston rod. The other end of the piston rod is fixedly connected to a hinge seat, and the other end of the connecting rod is hinged to the hinge seat. The filter screen is sleeved on the piston barrel, and the two ends of the filter screen are respectively installed on the extrusion port and the discharge port.

2. A solid-liquid and oil-water separation pretreatment device for wet garbage according to claim 1, characterized in that: Both sides of the extrusion bin are provided with a card slot, the card slot is semicircular, the diameter of which is equal to the diameter of the filter screen, and the centers of the card slot, the extrusion port and the discharge port are all located on the same straight line.

3. A solid-liquid and oil-water separation pretreatment device for wet garbage according to claim 1, characterized in that: The cross section of the filter screen is circular, the outer diameter of which is equal to the diameters of the extrusion port and the discharge port, and flanges are fixedly connected to both ends of the filter screen.

4. A solid-liquid and oil-water separation pretreatment device for wet garbage according to claim 1, characterized in that: A plurality of reinforcement rings are fixedly connected to the filter screen, and the reinforcement rings are linearly and equidistantly distributed along the length direction of the filter screen.

5. The solid-liquid and oil-water separation pretreatment device for wet garbage according to claim 1, characterized in that: The rod body of the piston rod is fixedly connected with a plurality of reinforcing plates, the other side of the reinforcing plates is fixedly connected to the inner wall of the piston barrel, and the reinforcing plates are equidistantly distributed in an annular shape along the circumferential direction of the piston rod.

6. The solid-liquid and oil-water separation pretreatment device for wet garbage according to claim 1, characterized in that: The piston barrel is in a cylindrical shape, and its outer diameter is equal to the inner diameter of the filter screen, and the centers of the piston barrel, the extrusion port and the card slot are located on the same straight line.

7. The solid-liquid and oil-water separation pretreatment device for wet garbage according to claim 1, characterized in that: The outer wall of the water storage bin close to the discharge port is fixedly connected with a mounting seat, a hydraulic cylinder is installed on the mounting seat, and the output shaft end of the hydraulic cylinder is fixedly connected to the support.

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