Impurity removal and pulping equipment for hydrothermal liquefaction of kitchen garbage

Abstract

The invention provides impurity removal and pulping equipment for hydrothermal liquefaction of kitchen garbage, and relates to the field of solid garbage treatment.The impurity removal and pulping equipment comprises an upper barrel cover, a feeding pipe is arranged on one side of the top of the upper barrel cover, a crushing structure is arranged in the upper barrel cover, and the two ends of the crushing structure penetrate out of the upper barrel cover; a crushing screening structure is arranged at the other end of the crushing structure, an isolation frame is arranged on the outer side of the crushing screening structure, a lower silo is arranged below the crushing structure, a flow conversion hopper is arranged below the lower silo, and a first discharging structure is arranged on the side, away from the feeding pipe, of the front end of the upper silo cover; a third discharging structure is arranged at the end of the upper barrel cover. According to the kitchen garbage crushing device, through the arranged crushing structure and the crushing and screening structure, kitchen garbage is crushed in a shearing crushing and grinding mode, and the problems that in the prior art, the kitchen garbage is crushed in a crushing mode of a crushing hammer for impurity removal and pulping, and the crushing mode is low in efficiency and poor in crushing effect are solved.

Description

Technical Field

[0001] The invention relates to the field of solid waste treatment, and in particular to an impurity removal and pulping device for hydrothermal liquefaction of kitchen waste. Background Art

[0002] In addition to conventional organic waste such as leftovers, kitchen waste also contains plastic products and metal products. The process of impurity removal and pulping is to separate inorganic matter such as plastic and metal in kitchen waste from the kitchen waste, and make the kitchen waste into pulp. The organic matter can be recycled as fertilizer, but the current impurity removal and pulping usually uses a crushing hammer to crush the kitchen waste, and the vegetables and meat in the kitchen waste have a lot of fiber, which makes this crushing method less efficient and the crushing effect is poor.

[0003] For example, the Chinese invention patent (application number: 202311236968.X) discloses a "double-shaft crushing, screening, impurity removal and pulping machine", and its specification discloses: including a support plate, a box body is provided on the support plate, a pair of electromagnetic braking three-phase asynchronous motors are provided on one side of the box body, and one side of the electromagnetic braking three-phase asynchronous motor is connected to the transmission main shaft, and the transmission main shaft extends into the box body. The present invention pours garbage from the set feed inlet, at which time a pair of electromagnetic braking three-phase asynchronous motors are set to drive a pair of rotating main shafts to rotate, and at the same time, water is discharged through the drain port on the rotating main shaft to mix it with the crushed kitchen waste. After that, the water falls from the material screen with the crushed organic matter, drives the fan blade roller to rotate, and drives the cleaning block to clean the crushing tank, so as to prevent the subsequent insufficient crushing of the material due to the accumulation of kitchen waste, and thus prevent the occurrence of unqualified quality problems; the above patents can prove the defects of the prior art.

[0004] Therefore, we have made improvements on this and proposed a pulping equipment for removing impurities from kitchen waste for hydrothermal liquefaction. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the existing impurity removal pulping usually adopts a crushing hammer to crush the kitchen waste, and this crushing method has low efficiency and poor crushing effect.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention provides the following impurity removal and pulping equipment for hydrothermal liquefaction of kitchen waste to improve the above-mentioned problems.

[0007] The specific application is as follows: A kitchen waste hydrothermal liquefaction impurity removal pulping equipment comprises an upper cylinder cover, a feeding pipe is provided on one side of the top of the upper cylinder cover, the feeding pipe is connected with the upper cylinder cover and is used to put the kitchen waste into the upper cylinder cover, a crushing structure is provided inside the upper cylinder cover, both ends of the crushing structure pass through the upper cylinder cover, and a crushing and screening structure is provided on the other end of the crushing structure, and the crushing and screening structure is used to perform secondary crushing and filtering on the kitchen waste crushed by the crushing structure, and an isolation frame is provided on the outside of the crushing and screening structure, and the isolation frame is used to separate the internal area of ​​the upper cylinder cover, and the internal area of ​​the upper cylinder cover is divided into a crushing area and a filtering area, the side of the isolation frame close to the feeding pipe is the crushing area, and the side of the isolation frame away from the feeding pipe is the filtering area, so as to separate the filtered and unfiltered garbage, and a lower silo is provided below the crushing structure, and a flow conversion bucket is provided below the lower silo, and the flow conversion bucket is used to drive the water in the two areas inside the upper cylinder cover to circulate and reverse inside the flow conversion bucket, and the lower silo is used for the water circulation in the two areas inside the upper cylinder cover and the flow conversion bucket, and realizes To filter metal impurities, a No. 1 discharge structure is provided at the front end of the upper cylinder cover and on a side away from the feed pipe, and the No. 1 discharge structure is used for discharging floating objects, and the No. 1 discharge structure includes a side fixedly connected to the front end of the upper cylinder cover and away from the feed pipe, the L-shaped discharge pipe is communicated with the upper cylinder cover, the front end of the L-shaped discharge pipe is fixedly connected to a No. 2 drive motor, the output shaft of the No. 2 drive motor passes through the L-shaped discharge pipe and is fixedly connected to a discharge auger located inside the L-shaped discharge pipe, the end of the discharge auger extends to the inside of the upper cylinder cover, and a No. 3 discharge structure is provided at the end of the upper cylinder cover, and a sealing plate is inserted at the top of the No. 3 discharge structure close to the upper cylinder cover, and a hydraulic cylinder fixedly installed on the upper cylinder cover is provided at the top of the sealing plate, and the telescopic end of the hydraulic cylinder is fixedly connected to the sealing plate, and the hydraulic cylinder controls the movement of the sealing plate, and when the sealing plate blocks the No. 3 discharge structure, the discharge of the internal material of the upper cylinder cover is prevented, and when the sealing plate moves up and does not block the No. 3 discharge structure, the internal material of the upper cylinder cover is discharged through the No. 3 discharge structure; The crushing structure comprises a central axis, on which are mounted two symmetrically arranged end sealing plates and a plurality of forward rotation groups and reverse rotation groups located between the two end sealing plates, the forward rotation groups and the reverse rotation groups being arranged alternately, a reversing gear assembly being arranged between the forward rotation group and the reverse rotation group, the reversing gear assembly being used to realize that the forward rotation group and the reverse rotation group rotate in opposite directions, the outside of the forward rotation group and the reverse rotation group are both provided with a plurality of obliquely arranged crushing knives, the crushing knives located on the forward rotation group and the reverse rotation group are inclined in opposite directions, the forward rotation group and the reverse rotation group rotate in opposite directions, thereby realizing the forward and reverse rotation of the crushing knives outside the forward rotation group and the reverse rotation group, and the shear crushing of the kitchen waste has a better crushing effect on the kitchen waste than the traditional crushing crushing, and the crushing crushing is more suitable for crushing materials with higher brittleness; The crushing and screening structure comprises a guiding part and a filtering part, wherein the guiding part comprises an inner grinding cylinder, an outer grinding cylinder is arranged outside the inner grinding cylinder, an annular connecting plate is arranged on one side of the outer grinding cylinder and the inner grinding cylinder, the inner grinding cylinder and the outer grinding cylinder are connected by the annular connecting plate, a guiding groove is arranged on the inner side of the inner grinding cylinder and the outer side of the outer grinding cylinder, a guide plate is fixedly arranged on the outer side of the inner grinding cylinder and the inner side of the outer grinding cylinder, the guide plate is located on the side of the guiding groove, the filtering part comprises an inner sieve cylinder arranged inside the inner grinding cylinder, the outer surface of the inner sieve cylinder is in contact with the inner wall of the inner grinding cylinder, an outer sieve cylinder is arranged outside the guide groove, an annular sieve plate is arranged on one side of the inner sieve cylinder, the inner sieve cylinder and the outer sieve cylinder are connected by the annular sieve plate, the inner sieve cylinder A number of filter holes are arranged on the outer screen drum and the annular screen plate. The crushing structure drives the guide part to rotate, and the guide plate is tilted, so the guide plate guides the crushed kitchen waste into the guide groove. The inner wall of one side of the guide groove is also tilted. When the inner and outer grinding drums rotate, the inclined inner wall of the guide groove will guide the garbage to move toward the direction of the annular connecting plate. Shear force will be formed between the filter holes on the inner grinding drum and the inner screen drum, and between the filter holes on the outer grinding drum and the outer screen drum to crush the garbage. At the same time, the structure composed of the guide part and the filter part utilizes the principle of grinding. The relative movement between the outer screen drum and the guide groove and the relative movement between the inner grinding drum and the inner screen drum can grind the garbage inside the guide groove, thereby further improving the crushing effect.

[0008] As a preferred technical solution of the present application, the forward rotation group includes a turntable, the outer portion of the turntable is fixedly connected to a first mounting ring, the reverse rotation group is specifically a second mounting ring, the reversing gear assembly includes a gear rack fixedly connected to the central shaft, central gears rotatably connected to the central shaft are provided in the middle of both sides of the gear rack, a plurality of connecting shafts are interspersed at the circumferential positions on one side of the gear rack, two planetary gears respectively located on both sides of the gear rack are fixedly provided on the connecting shaft, the planetary gears are meshed with the central gear on the same side, and the inner wall of the No. 2 mounting ring is fixedly provided with There are transmission internal teeth meshing with planetary gears, the central gear is fixedly connected to the adjacent turntable, a No. 1 driven gear is fixedly provided at one end of the central shaft, a No. 2 driven gear is sleeved on the central shaft, a bevel gear is provided between the No. 2 driven gear and the No. 1 driven gear, the two sides of the bevel gear are respectively meshed with the No. 1 driven gear and the No. 2 driven gear, a protective cover is installed at one end of the upper cylinder cover close to the feed pipe, a transmission sleeve is fixedly provided on the side of the No. 2 driven gear close to the secondary transmission structure, and the transmission sleeve passes through the adjacent end sealing plate and is fixedly connected to the No. 1 mounting ring.

[0009] As a preferred technical solution of the present application, the crushing knife includes a mounting seat fixedly connected to the outside of the No. 1 mounting ring and the No. 2 mounting ring, the mounting seat located on the No. 1 mounting ring and the mounting seat located on the No. 2 mounting ring are inclined in opposite directions, a knife body is provided above the mounting seat, a mounting groove is provided below the knife body, the mounting seat is located inside the mounting groove, a mounting shaft is inserted through the middle of the mounting seat, both ends of the mounting shaft are fixedly connected to the inner wall of the mounting groove, a plurality of buffer grooves located on the circumferential side of the mounting shaft are provided on the mounting seat, a limit block is provided for sliding inside the buffer groove, both sides of the limit block are fixedly connected to the inner wall of the mounting groove, and a spring is provided on one side of the limit block.

[0010] As a preferred technical solution of the present application, the two ends of the central axis respectively pass through the inner wall of the upper cylinder cover and extend to the two sides of the upper cylinder cover, an air transmission cavity is opened inside the central axis, and a plurality of air outlet holes are opened on the circumferential side of the central axis.

[0011] As a preferred technical solution of the present application, the guide groove is in the shape of a triangular pyramid, and the side of the guide groove close to the protective cover passes through the outer grinding cylinder and the inner grinding cylinder. The inner wall of one side of the guide groove is inclined, the inner grinding cylinder is fixedly connected to the adjacent end sealing plate, and the outer screen cylinder is rotatably connected to the inside of the isolation frame.

[0012] As a preferred technical solution of the present application, the lower silo includes a middle frame fixedly connected to the bottom of the upper cylinder cover, a guide side plate is fixedly installed on the bottom end of the middle frame, and inclined surfaces are arranged on all sides of the top of the guide side plate. The isolation frame is fixedly connected to the inside of the middle frame, and the top of the isolation frame is fixedly connected to the inner wall of the upper cylinder cover. A filter plate is fixedly provided on the side of the isolation frame away from the protective cover, a baffle is provided below the guide side plate and close to the protective cover, a plurality of collecting holes are opened on the baffle, a flow exchange plate is provided below the baffle, a plurality of No. 1 flow exchange holes located below the filter plate are opened on the flow exchange plate, a No. 2 flow exchange hole located below the baffle is also opened above the flow exchange plate, and a plurality of groups of magnet groups respectively located between the No. 2 flow exchange holes are embedded on the flow exchange plate.

[0013] As a preferred technical solution of the present application, a groove is provided on the side of the converter plate close to the protective cover, a No. 1 hydraulic cylinder is fixedly installed below the converter plate, a transmission plate is fixedly installed at the telescopic end of the No. 1 hydraulic cylinder, and the transmission plate passes through the groove and is fixedly connected to the baffle.

[0014] As a preferred technical solution of the present application, the flow-converting bucket includes a bucket body fixedly installed at the bottom end of the middle frame, a flow-converting auger is provided inside the bucket body, a water inlet pipe is fixedly inserted on the side of the bucket body close to the protective cover, and a No. 2 discharge structure is installed below the bucket body and on the side close to the protective cover.

[0015] As the preferred technical solution of the present application, a No. 1 pulley is fixedly provided on the outside of the transmission sleeve, and the end of the commutation auger shaft close to the protective cover passes through the bucket body and is fixedly installed with a No. 2 pulley. The No. 1 pulley and the No. 2 pulley are connected by a belt transmission. When the No. 1 pulley rotates, it drives the No. 2 pulley to rotate, thereby realizing that the No. 1 drive motor drives the secondary transmission structure and the commutation auger. At the same time, when the No. 1 mounting ring is reversed, the commutation auger will also reverse synchronously.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the scheme of this application: 1. Through the crushing structure and crushing screening structure, the No. 1 mounting ring and the No. 2 mounting ring rotate in opposite directions to make the crushing knife crush the kitchen waste by shearing and impacting. Shearing force is formed between the filter holes on the inner grinding cylinder and the inner screen cylinder, and between the filter holes on the outer grinding cylinder and the outer screen cylinder to crush the garbage. At the same time, the structure composed of the guide part and the filter part utilizes the principle of grinding. The relative movement between the outer screen cylinder and the guide groove and the relative movement between the inner grinding cylinder and the inner screen cylinder can grind the garbage inside the guide groove, further improving the crushing effect, realizing the shearing crushing and grinding method to crush the kitchen waste, and solving the problem that the crushing method of crushing the kitchen waste by crushing hammer is usually adopted in the prior art for impurity removal and pulping, and this crushing method has low efficiency and poor crushing effect. 2. Through the lower silo, the heavier metals in the garbage sink into the collection hole. At this time, the collection hole and the No. 2 exchange hole are misaligned, and the magnet group corresponds to the bottom of the collection hole. The magnetic material is also attracted by the magnet group, and the baffle is controlled to move. The collection hole overlaps with the No. 2 exchange hole. The baffle pushes the metal to move from the No. 2 exchange hole into the exchange bucket. The exchange bucket drives the water inside to pass through the No. 2 exchange hole and the collection hole into the crushing area. The process of water entering the crushing area can prevent garbage other than heavier metals from entering the exchange bucket, thereby realizing metal separation, and solving the problem that the existing technology cannot well separate metals from kitchen waste; 3. Through the provided flow conversion bucket, during the initial crushing of garbage in the secondary transmission structure, the No. 1 mounting ring rotates counterclockwise and the No. 2 mounting ring rotates clockwise, and the garbage in the crushing area is pushed toward the direction of the protective cover by the crushing knife. At this time, the water pump is started to inject water into the bucket body through the water inlet pipe. A No. 2 discharge structure is installed below the bucket body and on the side close to the protective cover. When the flow conversion auger rotates clockwise, the flow conversion auger drives the water inside the bucket body to move toward the direction close to the protective cover, so that the water inside the bucket body passes through the collecting hole and the No. 2 flow conversion hole into the crushing area. When the flow conversion auger rotates counterclockwise, the flow conversion auger drives the water inside the bucket body to move toward the direction close to the No. 3 discharge structure, so that the water inside the bucket body passes through the No. 1 flow conversion hole and the filter plate into the filtration area, thereby auxiliary control of the moving direction of the kitchen waste inside the upper cylinder cover and the driving direction of the water is achieved, and also auxiliary discharge of kitchen waste, metal and plastic is assisted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of the impurity removal and pulping equipment for hydrothermal liquefaction of kitchen waste provided in this application; Figure 2 This is a schematic diagram of the split structure from the rear perspective of the exchange bucket and the lower silo in the impurity removal pulping equipment for hydrothermal liquefaction of kitchen waste provided in this application; Figure 3 A schematic diagram of the positional relationship between the flow exchange bucket, the lower silo and the crushing structure in the impurity removal pulping equipment for hydrothermal liquefaction of kitchen waste provided in this application; Figure 4 A schematic diagram of the structure of the interior of the upper drum cover in the impurity removal and pulping equipment for hydrothermal liquefaction of kitchen waste provided in this application; Figure 5 A schematic diagram of the structure of the guide groove and the drainage plate in the impurity removal pulping equipment for hydrothermal liquefaction of kitchen waste provided in this application; Figure 6 A schematic diagram of the cross-sectional structure of a crushing knife in the impurity removal and pulping equipment for hydrothermal liquefaction of kitchen waste provided in this application; Figure 7 A schematic diagram of the cross-sectional structure of a crushing knife in the impurity removal and pulping equipment for hydrothermal liquefaction of kitchen waste provided in this application; Figure 8 A schematic diagram of the structure of the commutator plate in the impurity removal pulping equipment for hydrothermal liquefaction of kitchen waste provided in this application; Fig. 9 A schematic diagram of the structure of the crushing structure in the impurity removal and pulping equipment for hydrothermal liquefaction of kitchen waste provided in this application; Fig.10 A schematic diagram of the structure of the secondary transmission structure in the impurity removal and pulping equipment for hydrothermal liquefaction of kitchen waste provided in this application; Fig.11 A schematic diagram of the structure of a reversing gear assembly in the impurity removal and pulping equipment for hydrothermal liquefaction of kitchen waste provided in this application; Fig.12 This is a schematic diagram of the structure of the ball assembly in the impurity removal and pulping equipment for hydrothermal liquefaction of kitchen waste provided in this application.

[0018] Indicated in the figure: 1. Upper cylinder cover; 2. Feed pipe; 3. Flow change bucket; 31. Bucket body; 32. Flow change auger; 33. Water inlet pipe; 34. No. 2 pulley; 35. No. 2 discharge structure; 4. Lower silo; 41. Middle frame; 42. Filter plate; 43. Guide side plate; 44. Let-out slot; 45. Baffle plate; 46. Collecting hole; 47. Flow changer plate; 48. No. 1 flow changer hole; 49. No. 2 flow changer hole; 410. No. 1 hydraulic cylinder; 411. Transmission plate; 412. Magnet group; 5. Protective cover; 6. No. 1 discharge structure; 61. L-shaped discharge pipe; 62. No. 2 drive motor; 63. Discharge auger; 7. Crushing structure; 71. Center shaft; 72. Secondary transmission structure; 721. End sealing plate; 722. No. 1 mounting ring; 723. Turntable; 724. No. 2 mounting ring; 725. Reversing gear assembly; 7251. Gear rack; 7252. Center gear; 7253. Planetary gear; 7254. Transmission inner gear; 7255. Connecting shaft; 726. Ball assembly; 727. Ball groove; 73. Crushing knife; 731. Mounting seat; 732. Knife body; 733. Mounting groove; 734. Mounting shaft; 735. Buffer groove; 736. Limit block; 737. Spring; 74. No. 1 pulley; 75. Bevel gear; 76. No. 1 driven gear; 77. No. 2 driven gear; 78. No. 1 driving motor; 79. Transmission sleeve; 8. Crushing and screening structure; 81. Inner grinding cylinder; 82. Outer grinding cylinder; 83. Guide groove; 84. Drainage plate; 85. Annular connecting plate; 86. Inner sieve cylinder; 87. Outer sieve cylinder; 88. Annular sieve plate; 9. Isolation frame; 10. No. 3 discharge structure. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments 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 creative work should fall within the scope of protection of the present invention.

[0020] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] Example 1 Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Fig. 9 , Fig.10 and Fig.11 A kitchen waste hydrothermal liquefaction impurity removal pulping equipment, comprising an upper cylinder cover 1, a feeding pipe 2 is arranged on one side of the top of the upper cylinder cover 1, the feeding pipe 2 is connected with the upper cylinder cover 1 and is used to put kitchen waste into the upper cylinder cover 1, a crushing structure 7 is arranged inside the upper cylinder cover 1, both ends of the crushing structure 7 pass through the upper cylinder cover 1, a crushing and screening structure 8 is arranged on the other end of the crushing structure 7, the crushing and screening structure 8 is used to perform secondary crushing and filtering on the kitchen waste crushed by the crushing structure 7, and a crushing and screening structure 8 is arranged on the outer side of the crushing and screening structure 8. There is an isolation frame 9, which is used to separate the internal area of ​​the upper cylinder cover 1, and the internal area of ​​the upper cylinder cover 1 is divided into a crushing area and a filtering area. The side of the isolation frame 9 close to the feed pipe 2 is the crushing area, and the side of the isolation frame 9 away from the feed pipe 2 is the filtering area, so as to separate the filtered and unfiltered garbage. A lower silo 4 is provided below the crushing structure 7, and a flow conversion bucket 3 is provided below the lower silo 4. The flow conversion bucket 3 is used to drive the water in the two areas inside the upper cylinder cover 1 to circulate and reverse inside the flow conversion bucket 3. The lower silo 4 is used for the upper cylinder cover 1 Water circulates in the two internal areas and the exchange bucket 3, and metal impurities are filtered. A discharge structure 6 is provided at the front end of the upper cylinder cover 1 and on the side away from the feed pipe 2. The discharge structure 6 is used to discharge floating objects. The discharge structure 6 includes a side fixedly connected to the front end of the upper cylinder cover 1 and away from the feed pipe 2. The L-shaped discharge pipe 61 is connected to the upper cylinder cover 1. The front end of the L-shaped discharge pipe 61 is fixedly connected to a No. 2 drive motor 62. The output shaft of the No. 2 drive motor 62 passes through the L-shaped discharge pipe 61 and is fixedly connected to a discharge auger 6 located inside the L-shaped discharge pipe 61. 3. The end of the discharge auger 63 extends to the interior of the upper cylinder cover 1. The end of the upper cylinder cover 1 is provided with a No. 3 discharge structure 10. A sealing plate is inserted into the top of the No. 3 discharge structure 10 near the upper cylinder cover 1. A hydraulic cylinder fixedly mounted on the upper cylinder cover 1 is provided on the top of the sealing plate. The telescopic end of the hydraulic cylinder is fixedly connected to the sealing plate. The hydraulic cylinder controls the movement of the sealing plate. When the sealing plate blocks the No. 3 discharge structure 10, the discharge of the internal material of the upper cylinder cover 1 is prevented. When the sealing plate moves up and does not block the No. 3 discharge structure 10, the internal material of the upper cylinder cover 1 is discharged through the No. 3 discharge structure 10. The crushing structure 7 includes a central shaft 71, on which are mounted two symmetrically arranged end sealing plates 721 and a plurality of forward rotation groups and reverse rotation groups located between the two end sealing plates 721. The forward rotation groups and reverse rotation groups are alternately arranged, and a reversing gear assembly 725 is arranged between the forward rotation group and the reverse rotation group. The reversing gear assembly 725 is used to realize that the forward rotation group and the reverse rotation group rotate in opposite directions. The outside of the forward rotation group and the reverse rotation group are both provided with a plurality of inclined crushing knives 73. The crushing knives 73 located on the forward rotation group and the reverse rotation group are inclined in opposite directions, and the rotation directions of the forward rotation group and the reverse rotation group are opposite, thereby realizing the forward and reverse rotation of the crushing knives 73 outside the forward rotation group and the reverse rotation group, and the shear crushing of the kitchen waste has a better crushing effect on the kitchen waste than the traditional crushing crushing, and the crushing crushing is more suitable for crushing materials with higher brittleness; The crushing and screening structure 8 includes a guide portion and a filtering portion. The guide portion includes an inner grinding cylinder 81. An outer grinding cylinder 82 is provided on the outside of the inner grinding cylinder 81. An annular connecting plate 85 is provided on one side of the outer grinding cylinder 82 and the inner grinding cylinder 81. The inner grinding cylinder 81 and the outer grinding cylinder 82 are connected by the annular connecting plate 85. A plurality of equally spaced guide grooves 83 are provided on the inner side of the inner grinding cylinder 81 and the outer side of the outer grinding cylinder 82. A plurality of guide plates 84 are fixedly provided on the outer side of the inner grinding cylinder 81 and the inner side of the outer grinding cylinder 82. The guide plates 84 are located on the sides of the guide grooves 83. The filtering portion includes an inner sieve cylinder 86 arranged inside the inner grinding cylinder 81. The outer surface of the inner sieve cylinder 86 is in contact with the inner wall of the inner grinding cylinder 81. An outer sieve cylinder 87 is provided on the outside of the guide groove 83. An annular sieve plate 88 is provided on one side of the inner sieve cylinder 86. The inner sieve cylinder 86 and the outer sieve cylinder 87 are connected by the annular sieve plate 88. The cylinder 86, the outer sieve cylinder 87 and the annular sieve plate 88 are all provided with a plurality of filter holes. The crushing structure 7 drives the guide part to rotate, and the guide plate 84 is tilted, so the guide plate 84 guides the crushed kitchen waste into the guide groove 83. The inner wall of one side of the guide groove 83 is also tilted. When the inner grinding cylinder 81 and the outer grinding cylinder 82 rotate, the inclined inner wall of the guide groove 83 will guide the garbage to move in the direction of the annular connecting plate 85. Shear force will be formed between the filter holes on the inner sieve cylinder 86 and the inner grinding cylinder 81, and between the filter holes on the outer sieve cylinder 87 and the outer grinding cylinder 82 to crush the garbage. At the same time, the structure composed of the guide part and the filter part utilizes the principle of grinding. The relative movement between the outer sieve cylinder 87 and the guide groove 83 and the relative movement between the inner grinding cylinder 81 and the inner sieve cylinder 86 can grind the garbage inside the guide groove 83, thereby further improving the crushing effect.

[0024] Further, such as Fig. 9 , Fig.10 , Fig.11 and Fig.12As shown, the forward rotation group includes a rotating disk 723, the outer portion of the rotating disk 723 is fixedly connected to a No. 1 mounting ring 722, the reverse rotation group is specifically a No. 2 mounting ring 724, the reversing gear assembly 725 includes a gear frame 7251 fixedly connected to the central shaft 71, the middle portions of both sides of the gear frame 7251 are provided with central gears 7252 rotatably connected to the central shaft 71, a plurality of connecting shafts 7255 are interspersed at the circumferential positions on one side of the gear frame 7251, two planetary gears 7253 respectively located on both sides of the gear frame 7251 are fixedly provided on the connecting shafts 7255, and the planetary gears 7253 are fixedly provided on the connecting shafts 7255. The inner wall of the No. 2 mounting ring 724 is fixed with a transmission inner tooth 7254 that meshes with the planetary gear 7253. The center gear 7252 is fixedly connected to the adjacent turntable 723. A No. 1 driven gear 76 is fixedly provided at one end of the center shaft 71. A No. 2 driven gear 77 is sleeved on the center shaft 71. A bevel gear 75 is provided between the No. 2 driven gear 77 and the No. 1 driven gear 76. Both sides of the bevel gear 75 are respectively meshed with the No. 1 driven gear 76 and the No. 2 driven gear 77. A No. 1 driving motor 78 is provided above the bevel gear 75. The output shaft of the driving motor 78 is connected to the bevel gear 75 through a speed reducer. A protective cover 5 is installed at one end of the upper cylinder cover 1 close to the feed pipe 2. The No. 1 driving motor 78, the bevel gear 75, the No. 1 driven gear 76 and the No. 2 driven gear 77 are all located inside the protective cover 5. A transmission sleeve 79 is fixedly provided on the side of the No. 2 driven gear 77 close to the secondary transmission structure 72. The transmission sleeve 79 passes through the adjacent end sealing plate 721 and is fixedly connected to the No. 1 mounting ring 722. The No. 1 driving motor 78 drives the bevel gear 75 to rotate, so that the No. 1 driven gear 76 and the No. 2 driven gear 77 rotate and the rotation directions are opposite. On the contrary, the No. 2 driven gear 77 drives the nearest rotating disk 723 to rotate through the transmission sleeve 79, and the rotating disk 723 drives the adjacent central gear 7252 to rotate. Since the planetary gears 7253 on both sides of the gear frame 7251 are connected through the connecting shaft 7255, the central gear 7252 drives the planetary gears 7253 on both sides to rotate, and then drives the central gear 7252 on the other side of the gear frame 7251 to rotate, thereby driving the adjacent rotating disk 723 to rotate, and similarly drives all the planetary gears 7253 to rotate, so that the No. 1 mounting ring 722 of all the positive rotation groups rotates in the same direction; The number one driven gear 76 drives the center shaft 71 to rotate, and the center shaft 71 drives the gear frame 7251 to rotate. The rotation direction of the gear frame 7251 is opposite to that of the center gear 7252. The gear frame 7251 drives the planetary gears 7253 to rotate in a circular motion around the center gear 7252. The planetary gears 7253 rotate through the transmission internal teeth 7254 meshing with them, thereby driving the number two mounting ring 724 to rotate and the rotation direction is opposite to that of the number one mounting ring 722.

[0025] Example 2 The impurity removal pulping equipment for hydrothermal liquefaction of kitchen waste provided in Example 1 is further optimized. Specifically, Figure 7 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, the crushing knife 73 includes a mounting seat 731 fixedly connected to the outside of the No. 1 mounting ring 722 and the No. 2 mounting ring 724. The mounting seat 731 located on the No. 1 mounting ring 722 and the mounting seat 731 located on the No. 2 mounting ring 724 are tilted in opposite directions. The opposite tilting directions ensure that when the No. 1 mounting ring 722 and the No. 2 mounting ring 724 rotate in opposite directions, the knife bodies 732 on the No. 1 mounting ring 722 and the No. 2 mounting ring 724 both push the garbage to move in the same direction. A knife body 732 is provided above the mounting seat 731, and a mounting groove 733 is provided below the knife body 732. The mounting seat 731 is located inside the mounting groove 733, and a mounting shaft 734 is inserted in the middle of the mounting seat 731. Both ends of the mounting shaft 734 are fixedly connected to the inner wall of the mounting groove 733. The mounting seat 731 is provided with a plurality of Buffer groove 735, the internal sliding of buffer groove 735 is provided with limit block 736, both sides of limit block 736 are fixedly connected to the inner wall of mounting groove 733, one side of limit block 736 is provided with spring 737, the spring 737 installed on the No. 1 mounting ring 722 is located in the clockwise direction of the limit block 736 in the same buffer groove 735, and the spring 737 installed on the No. 2 mounting ring 724 is located in the counterclockwise direction of the limit block 736 in the same buffer groove 735. When the knife body 732 encounters a hard object that is difficult to break when crushing garbage, the knife body 732 can rotate back around the mounting shaft 734. At this time, the limit block 736 rotates to compress the spring 737, and the hard object bounces away from between the two knife bodies 732 that realize shearing. The elastic force of the spring 737 resets the knife body 732, thereby preventing the knife body 732 from being damaged when encountering a hard object that is difficult to break.

[0026] Further, such as Fig.10 , Fig.11 and Fig.12 As shown, the adjacent surfaces of the adjacent No. 1 mounting ring 722 and the No. 2 mounting ring 724 are provided with ball grooves 727, and a ball assembly 726 is provided between two adjacent ball grooves 727. When the adjacent No. 2 mounting ring 724 and the No. 1 mounting ring 722 rotate, the ball assembly 726 reduces the friction between the two, and the two end sealing plates 721 are fixedly connected to the adjacent No. 1 mounting ring 722 and the No. 2 mounting ring 724, respectively.

[0027] Further, such as Figure 3 , Figure 4 and Fig. 9As shown, the two ends of the central shaft 71 respectively pass through the inner wall of the upper cylinder cover 1 and extend to the two sides of the upper cylinder cover 1. An air transmission cavity is opened inside the central shaft 71, and a plurality of air outlet holes are opened on the circumferential side of the central shaft 71. A rotary joint is connected to the end of the central shaft 71 away from the protective cover 5. When in use, the rotary joint is connected to a high-temperature steam source, and the high-temperature steam source enters the interior of the No. 1 mounting ring 722 and the No. 2 mounting ring 724 through the central shaft 71. Then, part of the steam is discharged from the gap between the No. 1 mounting ring 722 and the No. 2 mounting ring 724 to the area of ​​the crushing and screening structure 8 close to the side of the secondary transmission structure 72. The air pressure of the No. 1 mounting ring 722 and the No. 2 mounting ring 724 becomes high, ensuring that external liquid will not enter the internal area of ​​the No. 1 mounting ring 722 and the No. 2 mounting ring 724. At the same time, the high-temperature steam enters the kitchen waste to melt the oil, and the other part of the steam is directly discharged from the central shaft 71 to the area of ​​the crushing and screening structure 8 away from the secondary transmission structure 72, thereby reducing the density of the slurry formed after the crushed garbage, making it easier for lightweight plastics to float and separate.

[0028] Further, such as Figure 4 , Figure 5 and Figure 6 As shown, the guide groove 83 is in the shape of a triangular pyramid. The side of the guide groove 83 close to the protective cover 5 passes through the outer grinding cylinder 82 and the inner grinding cylinder 81. The inner wall of the guide groove 83 on the counterclockwise side is inclined to form an angle with the annular connecting plate 85. When the inner grinding cylinder 81 and the outer grinding cylinder 82 rotate, the inclined inner wall of the guide groove 83 guides the garbage to move toward the annular connecting plate 85. The guide groove 83 becomes narrower and shallower from the side close to the protective cover 5 to the side close to the annular connecting plate 85. The inner grinding cylinder 81 is fixedly connected to the adjacent end sealing plate 721, and the outer screen cylinder 87 is rotatably connected to the inside of the isolation frame 9.

[0029] Further, such as Figure 1 , Figure 2 , Figure 3 and Figure 8As shown, the lower silo 4 includes a middle frame 41 fixedly connected to the bottom of the upper cylinder cover 1, a guide side plate 43 is fixedly installed at the bottom end of the middle frame 41, and the four sides of the top of the guide side plate 43 are provided with inclined surfaces, which prevent more garbage from remaining in the corners. The isolation frame 9 is fixedly connected to the inside of the middle frame 41, and the top of the isolation frame 9 is fixedly connected to the inner wall of the upper cylinder cover 1. A filter plate 42 is fixedly provided on the side of the isolation frame 9 away from the protective cover 5. The filter plate 42 is used to filter water in the crushed garbage. The filter plate 42 is fixedly connected to the guide side plate 43, and the bottom and close to the guide side plate 43 A baffle plate 45 is provided on one side of the protective cover 5, and a plurality of collecting holes 46 are provided on the baffle plate 45. A commutation plate 47 is provided below the baffle plate 45, and a plurality of No. 1 commutation holes 48 located below the filter plate 42 are provided on the commutation plate 47. A No. 2 commutation hole 49 located below the baffle plate 45 is also provided above the commutation plate 47. A plurality of magnet groups 412 are embedded on the commutation plate 47 and are respectively located between the No. 2 commutation holes 49. The magnet group 412 is composed of a plurality of magnets arranged in a Halbach array. The counterclockwise and clockwise directions are viewed from the left side of the main figure. The secondary transmission structure During the initial crushing of the garbage, the No. 1 mounting ring 722 rotates counterclockwise, and the No. 2 mounting ring 724 rotates clockwise. The garbage in the crushing area is pushed toward the direction of the protective cover 5 by the crushing knife 73, and the heavier metal in the garbage sinks into the collecting hole 46. At this time, the collecting hole 46 and the No. 2 commutation hole 49 are misaligned, and the magnet group 412 corresponds to the lower part of the collecting hole 46. The magnetic material is also attracted by the magnet group 412. During the second stage of crushing the garbage, the No. 1 mounting ring 722 rotates clockwise, and the No. 2 mounting ring 724 rotates counterclockwise. The garbage in the area is pushed by the crushing knife 73 in the direction away from the protective cover 5 through the crushing and screening structure 8 and enters the filtering area. The water in the filtering area passes through the filter plate 42 and enters the exchange bucket 3. The baffle 45 is controlled to move, and the collecting hole 46 overlaps with the No. 2 exchange hole 49. The baffle 45 pushes the metal to move from the No. 2 exchange hole 49 into the exchange bucket 3. The exchange bucket 3 drives the internal water to pass through the No. 2 exchange hole 49 and the collecting hole 46 into the crushing area. The process of water entering the crushing area can prevent garbage other than heavier metals from entering the exchange bucket 3, thereby realizing metal separation.

[0030] Further, such as Figure 2 and Figure 3 As shown, a groove 44 is provided on one side of the converter plate 47 close to the protective cover 5, and a No. 1 hydraulic cylinder 410 is fixedly installed below the converter plate 47. A transmission plate 411 is fixedly installed at the telescopic end of the No. 1 hydraulic cylinder 410. The transmission plate 411 passes through the groove 44 and is fixedly connected to the baffle 45. The telescopic movement of the No. 1 hydraulic cylinder 410 controls the movement of the baffle 45.

[0031] Further, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the flow conversion bucket 3 includes a bucket body 31 fixedly installed at the bottom end of the middle frame 41, a flow conversion auger 32 is arranged inside the bucket body 31, a water inlet pipe 33 is fixedly inserted on the side of the bucket body 31 close to the protective cover 5, and the water inlet pipe 33 is connected to the water pump. During the initial crushing of the garbage in the secondary transmission structure 72, the No. 1 mounting ring 722 rotates counterclockwise, and the No. 2 mounting ring 724 rotates clockwise. The garbage in the crushing area is pushed toward the direction of the protective cover 5 by the crushing knife 73. At this time, the water pump is started to inject water into the bucket body 31 through the water inlet pipe 33, and the lower part of the bucket body 31 and the side close to the protective cover 5 A No. 2 discharge structure 35 is installed. When the flow-converting auger 32 rotates clockwise, the flow-converting auger 32 drives the water inside the bucket body 31 to move toward the direction close to the protective cover 5, so that the water inside the bucket body 31 passes through the collecting hole 46 and the No. 2 flow-converting hole 49 into the crushing area. When the flow-converting auger 32 rotates counterclockwise, the flow-converting auger 32 drives the water inside the bucket body 31 to move toward the direction close to the No. 3 discharge structure 10, so that the water inside the bucket body 31 passes through the No. 1 flow-converting hole 48 and the filter plate 42 into the filtration area. The No. 2 discharge structure 35 is opened and closed by hydraulically controlling the sealing cover.

[0032] Further, such as Figure 3 , Figure 4 , Fig. 9 and Fig.10 As shown, a No. 1 pulley 74 is fixedly provided on the outside of the transmission sleeve 79, and the end of the shaft of the commutation auger 32 close to the protective cover 5 passes through the bucket body 31 and is fixedly installed with a No. 2 pulley 34. The No. 1 pulley 74 and the No. 2 pulley 34 are connected by a belt transmission. When the No. 1 pulley 74 rotates, it drives the No. 2 pulley 34 to rotate, thereby realizing that the No. 1 drive motor 78 drives the secondary transmission structure 72 and the commutation auger 32. At the same time, when the No. 1 mounting ring 722 is reversed, the commutation auger 32 will also be synchronously reversed.

[0033] Example 3 A method for removing impurities and making pulp for hydrothermal liquefaction of kitchen waste, comprising: S1, feeding: feeding the kitchen waste from the feeding pipe 2, and the kitchen waste enters the upper drum cover 1 for crushing; S2. Steam injection: The rotary joint is connected to a high-temperature steam source, and the high-temperature steam source enters the interior of the No. 1 mounting ring 722 and the No. 2 mounting ring 724 through the central shaft 71, and then part of the steam is discharged from the gap between the No. 1 mounting ring 722 and the No. 2 mounting ring 724 to the area of ​​the crushing and screening structure 8 close to the secondary transmission structure 72. The air pressure of the No. 1 mounting ring 722 and the No. 2 mounting ring 724 becomes high, ensuring that external liquid does not enter the interior area of ​​the No. 1 mounting ring 722 and the No. 2 mounting ring 724. At the same time, the high-temperature steam enters the kitchen waste to melt the oil, and another part of the steam is directly discharged from the central shaft 71 to the area of ​​the crushing and screening structure 8 away from the secondary transmission structure 72, thereby reducing the density of the slurry formed after the crushed garbage, making it easier for lightweight plastics to float and separate; S3, initial crushing: A3. Shearing and crushing: The No. 1 driving motor 78 drives the bevel gear 75 to rotate, and the bevel gear 75 drives the No. 2 driven gear 77 and the No. 1 driven gear 76 to rotate, and the No. 2 driven gear 77 drives the No. 1 mounting ring 722 to rotate counterclockwise through the transmission sleeve 79, and the No. 1 driven gear 76 drives the No. 2 mounting ring 724 to rotate clockwise, and the No. 1 mounting ring 722 and the No. 2 mounting ring 724 drive the crushing knife 73 to rotate, and the No. 1 mounting ring 722 drives the crushing knife 73 on the No. 1 mounting ring 722 to rotate counterclockwise, and the No. 2 mounting ring 724 drives the crushing knife 73 on the No. 2 mounting ring 724 to rotate counterclockwise, and the kitchen waste is sheared and impacted. Crushing, at this time, the kitchen waste is pushed by the crushing knife 73 toward the protective cover 5; B3. Water injection and mixing: The water pump injects water into the bucket body 31 through the water inlet pipe 33, and the No. 1 pulley 74 drives the No. 2 pulley 34 to rotate the flow commutation auger 32 counterclockwise. The flow commutation auger 32 rotates to push the water of the flow commutation auger 32 toward the No. 1 flow commutation hole 48. The water passes through the No. 1 flow commutation hole 48 and the filter plate 42 and enters the upper cylinder cover 1, and then passes through the crushing and screening structure 8 to mix with the kitchen waste. After enough water is injected, the water injection stops; C3. Metal sedimentation: During the shearing and crushing process, the food waste is mixed with water and crushed. The heavier metals mixed in the food waste settle into the No. 2 exchange hole 49. The crushing knife 73 drives the food waste to move when it rotates, but it is difficult to drive the heavier metals. The principle is similar to gold panning, and the metals in the food waste will be concentrated in the No. 2 exchange hole 49; S4, secondary crushing and pulping: A4. Reverse crushing: Control the No. 1 drive motor 78 to reverse, the No. 1 mounting ring 722 rotates clockwise, the No. 2 mounting ring 724 rotates counterclockwise, the crushing knife 73 pushes the kitchen waste to move toward the crushing and screening structure 8, and the rotation of the crushing knife 73 shears and crushes the kitchen waste; B4. Fine grinding: When the end sealing plate 721 rotates, the guide part rotates, and the guide plate 84 guides the crushed kitchen waste into the guide groove 83. When the inner grinding cylinder 81 and the outer grinding cylinder 82 rotate, the inclined inner wall of the guide groove 83 guides the waste to move in the direction of the annular connecting plate 85. Shear force is formed between the filter holes on the inner grinding cylinder 81 and the inner screen cylinder 86, and between the filter holes on the outer grinding cylinder 82 and the outer screen cylinder 87 to crush the waste. At the same time, the structure composed of the guide part and the filter part utilizes the principle of grinding. The relative movement between the outer screen cylinder 87 and the guide groove 83 and the relative movement between the inner grinding cylinder 81 and the inner screen cylinder 86 can grind the waste inside the guide groove 83. C4. Filtering and screening: After the fineness of the finely ground kitchen waste reaches the standard, it passes through the filter holes on the filter part and enters the crushing and screening structure 8 away from the protective cover 5, and the pulping process is completed at the same time; S5. Metal separation and water circulation: A5. Metal separation: During the secondary crushing, the No. 1 drive motor 78 is reversed to reverse the flow conversion auger 32, and the No. 1 hydraulic cylinder 410 is extended and retracted to control the movement of the baffle 45, so that the collection hole 46 overlaps with the No. 2 flow conversion hole 49, and the baffle 45 pushes the metal to move from the No. 2 flow conversion hole 49 into the flow conversion bucket 3; B5. Water circulation: The reversed flow-converting auger 32 draws the water above the filter plate 42 into the bucket body 31, and further drives the internal water to pass through the No. 2 flow-converting hole 49 and the collecting hole 46 into the crushing area. The process of water entering the crushing area can prevent garbage other than heavier metals from entering the flow-converting bucket 3, thereby realizing metal separation. The water entering the crushing area drives the kitchen waste to move to the filtration area, realizing water circulation, and can continuously move the kitchen waste in the crushing area to the filtration area.

[0034] S6. Preliminary separation of plastics: Softer plastics cannot be completely crushed by the crushing blade 73 and the crushing and screening structure 8. After the kitchen waste passes through the filter holes on the filter part, the uncrushable plastics are intercepted on one side of the secondary transmission structure 72; S7. Plastic secondary separation, the completely crushed plastic passes through the crushing and screening structure 8 and enters the side of the outer sieve 87 away from the protective cover 5. The plastic has a relatively low density and floats on the surface of the mixture of kitchen waste and water. The second drive motor 62 drives the discharging auger 63 to rotate, and the discharging auger 63 drives the plastic to be discharged through the L-shaped discharge pipe 61; S8, discharge: A8. Kitchen waste discharge: The hydraulic cylinder controls the sealing plate to move, and the kitchen waste inside the upper cylinder cover 1 is discharged through the No. 3 discharge structure 10. At the same time, the secondary transmission structure 72 continues to rotate so that the crushing knife 73 pushes the water on the crushing and screening structure 8 close to the secondary transmission structure 72 to the other side. Then, the water pump is turned on to inject water into the bucket body 31. The water in the bucket body 31 enters the crushing area to complete the washing of the residual kitchen waste. Finally, the No. 3 discharge structure 10 is closed; B8. Metal discharge: When the commutation auger 32 delivers water to the crushing area, the commutation auger 32 rotates clockwise to push the metal entering the bucket 31 into the commutation auger 32. After the kitchen waste is discharged, the second discharge structure 35 is opened to complete the metal discharge; C8. Plastic discharge. After the kitchen waste and metal are discharged, there is still a lot of water inside the upper cylinder cover 1. The water carries the plastic through the collection hole 46 and the second exchange hole 49 into the bucket 31, and then is discharged from the second discharge structure 35; The discharged kitchen waste enters the next process for filtering to remove moisture.

[0035] The use process of the impurity removal pulping equipment for hydrothermal liquefaction of kitchen waste provided by the present invention is as follows: Working principle: Kitchen waste is put into the feed pipe 2, and the kitchen waste enters the upper cylinder cover 1 for crushing. High-temperature steam is injected through the air delivery cavity of the central shaft 71, and part of the steam enters the gap between the No. 1 mounting ring 722 and the No. 2 mounting ring 724 to form a high-pressure area to prevent liquid backflow and melt the grease in the waste at the same time; another part of the steam enters the side of the crushing and screening structure 8 away from the crushing area to reduce the slurry density and promote the floating of lightweight plastics. The No. 1 driving motor 78 drives the bevel gear 75 to rotate, and the bevel gear 75 drives the No. 2 driven gear 77 and the No. 1 driven gear 76 to rotate. The No. 2 driven gear 77 drives the No. 1 mounting ring 722 to rotate counterclockwise through the transmission sleeve 79, and the No. 1 driven gear 76 drives the No. 2 mounting ring 724 to rotate clockwise. The No. 1 mounting ring 722 and the No. 2 mounting ring 724 drive the crushing knife 73 to rotate, and the No. 1 mounting ring 722 drives the crushing knife 73 on the No. 1 mounting ring 722 to rotate counterclockwise, and the No. 2 mounting ring 7 24 drives the crushing knife 73 on the No. 2 mounting ring 724 to rotate counterclockwise to shear and impact the kitchen waste. At this time, the kitchen waste is pushed toward the protective cover 5 by the crushing knife 73. While being crushed, the water pump injects water into the bucket body 31 through the water inlet pipe 33. The No. 1 pulley 74 drives the No. 2 pulley 34 to rotate the conversion screw 32 counterclockwise. The conversion screw 32 rotates to push the water of the conversion screw 32 toward the No. 1 conversion hole 48. The water passes through the No. 1 conversion hole 48 and the filter plate 42 into the upper cylinder cover 1, and then passes through the crushing and screening structure 8 to mix with the kitchen waste. After enough water is injected, the water injection is stopped. During the shearing and crushing process, the kitchen waste is mixed with water and after being crushed, the heavier metals mixed in the kitchen waste settle into the No. 2 conversion hole 49. When the crushing knife 73 rotates, it drives the kitchen waste to move but it is difficult to drive the heavier metals (the principle is similar to gold panning). As a result, the metals in the kitchen waste will be concentrated in the No. 2 conversion hole 49. Then, the No. 1 driving motor 78 is controlled to reverse, the No. 1 mounting ring 722 rotates clockwise, the No. 2 mounting ring 724 rotates counterclockwise, and the crushing knife 73 pushes the kitchen waste to move toward the crushing and screening structure 8 and enters between the inner grinding cylinder 81 and the outer grinding cylinder 82. At the same time, the rotation of the crushing knife 73 continues to shear and crush the kitchen waste. When the end sealing plate 721 rotates, it drives the guide part to rotate. The reversal of the No. 1 driving motor 78 reverses the commutation auger 32, and the telescopic control baffle 45 of the No. 1 hydraulic cylinder 410 moves. The collecting hole 46 overlaps with the No. 2 exchange hole 49, and the baffle 45 pushes the metal to move from the No. 2 exchange hole 49 into the exchange bucket 3. The guide plate 84 guides the crushed kitchen waste into the guide groove 83. When the inner grinding cylinder 81 and the outer grinding cylinder 82 rotate, the inclined inner wall of the guide groove 83 guides the waste to move in the direction of the annular connecting plate 85. Shear force is formed between the filter holes on the inner grinding cylinder 81 and the inner screen cylinder 86, and between the filter holes on the outer grinding cylinder 82 and the outer screen cylinder 87 to crush the waste. The structure composed of the guide part and the filter part utilizes the principle of grinding. The relative movement between the outer screen drum 87 and the guide groove 83 and the relative movement between the inner grinding drum 81 and the inner screen drum 86 can grind the garbage inside the guide groove 83. After the fineness of the finely ground kitchen waste reaches the standard, it passes through the filter holes on the filter part and enters the side of the crushing and screening structure 8 away from the protective cover 5, and the pulping process is completed at the same time; the reversing process of the exchange auger 32 draws the water above the filter plate 42 into the bucket body 31, and further drives the internal water to pass through the No. 2 exchange hole 49 and the collection hole 46 into the crushing area. The process of water entering the crushing area can prevent garbage other than heavier metals from entering the exchange bucket 3, thereby realizing metal separation. The water entering the crushing area drives the kitchen waste to move to the filtering area, realizing water circulation, and can continuously move the kitchen waste in the crushing area to the filtering area. The uncrushed plastic is intercepted on one side of the crushing area. The crushed light plastic floats on the surface of the slurry in the filtering area and is discharged by rotating the discharge auger 63 in the No. 1 discharge structure 6. After the pulping is completed, the hydraulic cylinder controls the sealing plate to move, and the kitchen waste inside the upper cylinder cover 1 is discharged through the No. 3 discharge structure 10. At the same time, the secondary transmission structure 72 continues to rotate to make the crushing knife 73 push the water on the crushing and screening structure 8 close to the secondary transmission structure 72 on one side to the other side, and then turn on the water pump to inject water into the bucket body 31. The water in the bucket body 31 enters the crushing area to complete the flushing of the residual kitchen waste. Finally, the No. 3 discharge structure 10 is closed, and then the flow conversion auger 32 transports water to the crushing area. When the flow conversion auger 32 rotates clockwise, the metal entering the bucket body 31 is pushed into the flow conversion auger 32. After the kitchen waste is discharged, the No. 2 discharge structure 35 is opened to complete the discharge of the metal. After the kitchen waste discharge and the metal discharge are completed and the water injection is closed, there is still a lot of water in the upper cylinder cover 1. The water carries the plastic through the collection hole 46 and the No. 2 flow conversion hole 49 into the bucket body 31, and then is discharged from the No. 2 discharge structure 35; the discharged kitchen waste enters the next process for pressure filtration to remove moisture.

[0036] When the equipment is reused, the flow-converting bucket 3 drives the water from the filtering area to the crushing area in the upper cylinder cover 1, and can also flush the filter plate 42 and the outer screen cylinder 87 to avoid blockage, and at the same time remove the garbage residue in various areas inside the equipment. When cleaning, water can be injected into the upper cylinder cover 1, and the cleaning action can be completed by switching the rotation direction of the secondary transmission structure 72 and the flow-converting auger 32.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific embodiments, or to perform equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A kitchen waste hydrothermal liquefaction impurity removal pulping equipment, characterized in that: The invention comprises an upper cylinder cover (1), a feeding pipe (2) is provided on one side of the top of the upper cylinder cover (1), a crushing structure (7) is provided inside the upper cylinder cover (1), both ends of the crushing structure (7) pass through the upper cylinder cover (1), a crushing and screening structure (8) is provided at the other end of the crushing structure (7), an isolation frame (9) is provided on the outside of the crushing and screening structure (8), a lower silo (4) is provided below the crushing structure (7), a flow exchange bucket (3) is provided below the lower silo (4), a No. 1 discharge structure (6) is provided on the front end of the upper cylinder cover (1) and away from the feeding pipe (2), and a No. 3 discharge structure (10) is provided at the end of the upper cylinder cover (1); The crushing structure (7) comprises a central shaft (71), on which are mounted two symmetrically arranged end sealing plates (721) and a plurality of forward rotation groups and reverse rotation groups alternately arranged between the two end sealing plates (721), a reversing gear assembly (725) being arranged between the forward rotation group and the reverse rotation group, and a plurality of inclined crushing knives (73) being arranged outside the forward rotation group and the reverse rotation group; The crushing and screening structure (8) comprises a guide portion and a filter portion, the guide portion comprises an inner grinding cylinder (81), an outer grinding cylinder (82) is arranged outside the inner grinding cylinder (81), an annular connecting plate (85) is provided on one side of the outer grinding cylinder (82) and the inner grinding cylinder (81), a guide groove (83) is provided on the inner side of the inner grinding cylinder (81) and the outer side of the outer grinding cylinder (82), a guide plate (84) is fixedly provided on the outer side of the inner grinding cylinder (81) and the inner side of the outer grinding cylinder (82), the filter portion comprises an inner sieve cylinder (86) arranged inside the inner grinding cylinder (81), an outer sieve cylinder (87) is arranged outside the guide groove (83), and an annular sieve plate (88) is provided on one side of the inner sieve cylinder (86).

2. The impurity removal pulping equipment for hydrothermal liquefaction of kitchen waste according to claim 1, characterized in that: The forward rotation group comprises a rotating disk (723), the outer portion of the rotating disk (723) is fixedly connected to a first mounting ring (722), the reverse rotation group is specifically a second mounting ring (724), the reversing gear assembly (725) comprises a gear frame (7251) fixedly connected to the central shaft (71), central gears (7252) rotatably connected to the central shaft (71) are provided at the middle portions of both sides of the gear frame (7251), a plurality of connecting shafts (7255) are interspersed at the circumferential positions of one side of the gear frame (7251), two planetary gears (7253) respectively located on both sides of the gear frame (7251) are fixedly provided on the connecting shafts (7255), the planetary gears (7253) meshing with the central gear (7252) on the same side, and the inner wall of the second mounting ring (724) is fixedly provided with a gear frame (7251) which is connected to the central gear (7252) on the same side. The central gear (7252) is fixedly connected to the adjacent rotating disk (723), a first driven gear (76) is fixedly provided at one end of the central shaft (71), a second driven gear (77) is sleeved on the central shaft (71), a bevel gear (75) is provided between the second driven gear (77) and the first driven gear (76), and the two sides of the bevel gear (75) are respectively meshed with the first driven gear (76) and the second driven gear (77), a protective cover (5) is installed at one end of the upper cylinder cover (1) close to the feed pipe (2), a transmission sleeve (79) is fixedly provided on one side of the second driven gear (77) close to the secondary transmission structure (72), and the transmission sleeve (79) passes through the adjacent end sealing plate (721) and is fixedly connected to the first mounting ring (722).

3. The impurity removal pulping equipment for hydrothermal liquefaction of kitchen waste according to claim 2, characterized in that: The crushing knife (73) comprises a mounting seat (731) fixedly connected to the outside of a first mounting ring (722) and a second mounting ring (724); the mounting seat (731) located on the first mounting ring (722) and the mounting seat (731) located on the second mounting ring (724) are inclined in opposite directions; a knife body (732) is provided above the mounting seat (731); a mounting groove (733) is provided below the knife body (732); the mounting seat (731) is located inside the mounting groove (733); A mounting shaft (734) is inserted through the middle of the mounting seat (731), and both ends of the mounting shaft (734) are fixedly connected to the inner wall of the mounting groove (733). The mounting seat (731) is provided with a plurality of buffer grooves (735) located around the mounting shaft (734), and a limit block (736) is slidably provided inside the buffer groove (735). Both sides of the limit block (736) are fixedly connected to the inner wall of the mounting groove (733), and a spring (737) is provided on one side of the limit block (736).

4. The impurity removal pulping equipment for hydrothermal liquefaction of kitchen waste according to claim 3, characterized in that: The two ends of the central shaft (71) respectively pass through the inner wall of the upper cylinder cover (1) and extend to the two sides of the upper cylinder cover (1). An air delivery cavity is provided inside the central shaft (71), and a plurality of air outlet holes are provided on the circumferential side of the central shaft (71).

5. The impurity removal pulping equipment for hydrothermal liquefaction of kitchen waste according to claim 4, characterized in that: The guide groove (83) is in the shape of a triangular pyramid. The guide groove (83) passes through the outer grinding cylinder (82) and the inner grinding cylinder (81) on a side close to the protective cover (5). An inner wall of one side of the guide groove (83) is arranged at an angle. The inner grinding cylinder (81) is fixedly connected to an adjacent end sealing plate (721). The outer sieve cylinder (87) is rotatably connected to the interior of the isolation frame (9).

6. The impurity removal pulping equipment for hydrothermal liquefaction of kitchen waste according to claim 5, characterized in that: The lower silo (4) comprises a middle frame (41) fixedly connected to the bottom of the upper silo cover (1), a guide side plate (43) is fixedly installed at the bottom end of the middle frame (41), and inclined surfaces are arranged on all sides of the top of the guide side plate (43). The isolation frame (9) is fixedly connected to the inside of the middle frame (41), and the top of the isolation frame (9) is fixedly connected to the inner wall of the upper silo cover (1). A filter plate (42) is fixedly provided on the side of the isolation frame (9) away from the protective cover (5), and a filter plate (42) is fixedly provided below the guide side plate (43) and close to the protective cover (5). A baffle (45) is provided on one side of the shield (5), a plurality of collecting holes (46) are provided on the baffle (45), a flow changer plate (47) is provided below the baffle (45), a plurality of No. 1 flow changer holes (48) located below the filter plate (42) are provided on the flow changer plate (47), a No. 2 flow changer hole (49) located below the baffle (45) is further provided above the flow changer plate (47), and a plurality of magnet groups (412) are embedded on the flow changer plate (47) and are respectively located between the No. 2 flow changer holes (49).

7. The impurity removal pulping equipment for hydrothermal liquefaction of kitchen waste according to claim 6, characterized in that: A groove (44) is provided on one side of the converter plate (47) close to the protective cover (5); a No. 1 hydraulic cylinder (410) is fixedly mounted below the converter plate (47); a transmission plate (411) is fixedly mounted on the telescopic end of the No. 1 hydraulic cylinder (410); the transmission plate (411) passes through the groove (44) and is fixedly connected to the baffle plate (45).

8. The impurity removal pulping equipment for hydrothermal liquefaction of kitchen waste according to claim 7, characterized in that: The flow conversion bucket (3) comprises a bucket body (31) fixedly mounted on the bottom end of the middle frame (41), a flow conversion auger (32) being arranged inside the bucket body (31), a water inlet pipe (33) being fixedly inserted through a side of the bucket body (31) close to the protective cover (5), and a second discharge structure (35) being installed below the bucket body (31) and on a side close to the protective cover (5).

9. The impurity removal pulping equipment for hydrothermal liquefaction of kitchen waste according to claim 8, characterized in that: A first pulley (74) is fixedly provided on the outside of the transmission sleeve (79); an end of the shaft of the commutation auger (32) close to the protective cover (5) passes through the bucket body (31) and is fixedly installed with a second pulley (34); the first pulley (74) and the second pulley (34) are connected via a belt transmission; when the first pulley (74) rotates, the second pulley (34) is driven to rotate, thereby enabling the first drive motor (78) to drive the secondary transmission structure (72) and the commutation auger (32); and when the first mounting ring (722) is reversed and rotated, the commutation auger (32) is also synchronously reversed and rotated.

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