Kitchen residue feed preparation equipment

Abstract

The utility model provides kitchen residue feed preparation equipment which comprises a tank body, a crushing unit, a centrifugal separation unit and a drying unit are arranged in the tank body, and the tank body is further connected with a dry material forming unit. Kitchen residues enter the crushing unit through the feeding port to be crushed and then enter the centrifugal separation unit after being crushed by the crushing unit, the centrifugal separation unit rotates, meanwhile, the drying unit works for heating, and liquid in the kitchen residues is separated by the centrifugal separation unit and discharged from the non-solid material outlet. And the dried solids are discharged into the dry material forming unit from the solid material outlet and are made into feed cakes by the dry material forming unit. Liquid is separated in a centrifugal mode, meanwhile, the drying unit is arranged for heating and melting grease into oil liquid, the grease is prevented from being attached to solid substances, the oil content in the solid substances is reduced, the recovery rate of the grease can be improved, the solid substances are dried through the drying unit, and the oil content and the water content of feed cakes are reduced.

Description

Technical Field

[0001] The utility model belongs to the field of resource utilization of kitchen waste, and in particular relates to equipment for preparing kitchen waste feed. Background Art

[0002] When kitchen waste is recycled, in order to retain its residual dry material, the liquid in the kitchen waste needs to be separated, and the separated liquid can be separated into oil and water in an oil-water separator. CN201710919141.7 discloses a kitchen waste solid-liquid centrifugal separation unit, which squeezes out the water in the kitchen waste through an extrusion plate, and the solid waste enters the storage frame through a carrier plate. It uses extrusion to remove liquid, which easily causes the grease in the kitchen waste to adhere to the solid waste, making the oil content of the prepared "basic feed" too high, affecting the configuration of subsequent feeds, and the grease adheres to the solid matter, affecting the recovery of the grease. Utility Model Content

[0003] The utility model aims to solve the technical problems existing in the prior art and provides a device for preparing kitchen waste feed.

[0004] In order to achieve the above-mentioned objectives, the utility model adopts the following technical solutions: a kitchen waste feed preparation device comprises a tank body with a feed inlet, a crushing unit, a centrifugal separation unit and a drying unit are arranged in the tank body, the tank body also has a non-solid material outlet and a solid material outlet, and the solid material outlet is connected to a dry material forming unit; the kitchen waste enters the crushing unit through the feed inlet and is crushed, and then enters the centrifugal separation unit after being crushed by the crushing unit, the centrifugal separation unit rotates, and the drying unit works to heat at the same time, the liquid in the kitchen waste is separated by the centrifugal separation unit and discharged from the non-solid material outlet, and the dried solid matter is discharged from the solid material outlet to the dry material forming unit, and the dry material forming unit makes feed cakes.

[0005] The above technical solution firstly crushes the kitchen waste by the crushing unit, which can improve the separation efficiency; the centrifugal separation unit throws out the liquid (including water and oil) in the kitchen waste by rotating centrifugation, which is highly efficient, and the separated solid matter is made into feed cake by the dry material forming unit; the drying unit is provided to heat and melt the fat into oil, so as to avoid the fat adhering to the solid matter, reduce the oil content in the solid matter, and improve the recovery rate of the fat, and dry the solid matter by the drying unit, so as to reduce the oil content and water content of the feed cake. The utility model effectively realizes the separation and recycling of water, fat and solid matter in kitchen waste without changing the original properties of the matter.

[0006] In a preferred embodiment of the present invention, the drying unit comprises an electromagnetic heater or a resistance heating wire arranged outside the tank body or in the side wall of the tank body.

[0007] In the above technical solution, the drying unit is arranged around the tank body, the heating temperature is more uniform, and the drying effect is better.

[0008] In a preferred embodiment of the utility model, the crushing unit includes a receiving box for accommodating kitchen waste, a crushing blade arranged in the receiving box, and a crushing drive mechanism for driving the crushing blade to rotate. The receiving box is provided with a crushing outlet, and a crushing outlet valve is provided at the crushing outlet.

[0009] In the above technical solution, the crushing blade rotates to crush the kitchen leftovers in the receiving box, the crushing valve opens, and the crushed kitchen leftovers fall into the centrifugal separation unit through the crushing outlet.

[0010] In a preferred embodiment of the utility model, the dry material forming unit includes a receiving hopper connected to the solid material outlet for storing solid materials, a feed pipe connected to the receiving hopper outlet, and a horizontally arranged pressing pipe connected to the feed connecting pipe, the receiving hopper is provided with a screw conveyor extending into the feed pipe, the feed inlet of the pressing pipe is located at the top thereof, the bottom or end of the pressing pipe is provided with a material cake outlet staggered with its feed inlet, the pressing pipe is provided with two pressing plates located on both sides of its feed inlet side by side, the two pressing plates are respectively connected with a linear drive mechanism for driving them to move linearly in the pressing pipe, and the pressed feed cake can be pushed to the material cake outlet and output by the pressing plates.

[0011] In the above technical solution, the solid matter is conveyed to the pressing tube by the screw conveyor. Since the distance between the two pressing plates is fixed, the solid matter entering the pressing tube is quantitative, thus ensuring the consistency of the size and weight of each feed cake.

[0012] In a preferred embodiment of the present invention, the non-solid material outlet includes a gas outlet for discharging water vapor and an oil outlet for discharging oil, and the oil outlet and the solid material outlet are arranged at the bottom of the tank body and isolated from each other; the centrifugal separation unit has one or two separation levels; when the centrifugal separation unit has one separation level, the kitchen waste crushed by the crushing unit enters the centrifugal separation unit, the centrifugal separation unit operates at a first speed, and the drying unit operates at a first temperature state, the first temperature is higher than the boiling point of water and lower than the boiling point of fat, the liquid in the kitchen waste is driven and separated by the centrifugal separation unit, and the water is gasified into water vapor and discharged from the gas outlet under the action of the drying unit; then the centrifugal separation unit operates at a second speed that is the same as or different from the first speed, and the drying unit operates at a second temperature state, the second temperature is higher than the first temperature, under the action of centrifugal force and temperature, the fat is heated and melted into oil by the drying unit, and the oil in the kitchen waste can be The kitchen waste is separated and discharged from the oil outlet to the oil storage tank, and the remaining solids are discharged from the solid material outlet; when the centrifugal separation unit has two separation levels, the kitchen waste crushed by the crushing unit enters the first separation level of the centrifugal separation unit in the tank body, the first separation level of the centrifugal separation unit operates at a first speed, and the drying unit operates at a first temperature state, the first temperature is higher than the boiling point of water and lower than the boiling point of fat, the liquid in the kitchen waste is driven and separated by the centrifugal separation unit, and the water is gasified into water vapor and discharged from the gas outlet under the action of the drying unit; then the kitchen waste enters the second separation level and operates at a second speed, the drying unit operates at a second temperature state, the second speed is the same as or different from the first speed, the second temperature is higher than the first temperature, under the action of centrifugal force and temperature, the fat is heated and melted into oil by the drying unit, the oil in the kitchen waste can be separated and discharged from the oil outlet to the oil storage tank, and the remaining solids are discharged from the solid material outlet.

[0013] In the above technical solution, water and grease have different boiling points and densities. The separation of water and oil can be achieved by adjusting the temperature of the drying unit and / or adjusting the rotation speed of the centrifugal separation unit. Finally, the remaining solid matter is discharged from the solid material outlet to achieve the separation of solid matter. Moreover, when two separation levels are set, the separation level for separating water is located at the top, so that the first separated water is far away from the bottom of the tank body, ensuring that the water is vaporized into water vapor before falling into the bottom of the tank body. The utility model effectively realizes the resource classification and recycling of the mixture (waste) without changing the original properties of the substance. By setting the gas outlet, the oil outlet and the solid material outlet, it is convenient to discharge the gas phase, liquid phase and solid phase substances separately; by setting the water storage tank and the oil storage tank, it is convenient to store and recycle the separated water and oil separately.

[0014] In a preferred embodiment of the present invention, a drainage channel for discharging liquid is provided on the side wall of the separation layer. Under the action of centrifugal force, the liquid in the mixture can be thrown out from the drainage channel and splash onto the inner wall of the tank body.

[0015] In the above technical solution, the side wall of the separation layer is used to prevent the solid matter in the mixture from being thrown out, and the drainage channel is used to separate the liquid (water or oil) from the centrifugal separation unit under the action of centrifugal force.

[0016] In a preferred embodiment of the utility model, a separation level includes at least one separation rotating disk located in the tank body and arranged at intervals along the height direction of the tank body, and a rotating drive mechanism for driving the separation rotating disk to rotate, there is a gap between the outer wall of the separation rotating disk and the inner wall of the tank body, an annular paddle is fixedly connected to the outer periphery of the separation rotating disk, a discharge port is provided on the separation rotating disk, and a discharge valve is provided at the discharge port; the drainage channel is a plurality of vertically extending drainage slits circumferentially spaced on the paddle; or the paddle includes a plurality of sub-blades distributed circumferentially spaced, and the gap between adjacent sub-blades is the drainage channel.

[0017] In the above technical solution, the separation rotating disk and the paddles form a container with an upper opening for accommodating the mixture entering therein, and the drainage gap on the paddles or the gap between adjacent paddles is a channel for discharging the liquid separated by centrifugation. By setting a discharge port and a discharge valve, it is convenient to discharge the material in the container. When there are two or more separation rotating disks at a separation level, multi-stage separation can be achieved to improve the separation effect, or simultaneous separation can be achieved to improve the separation efficiency.

[0018] In another preferred embodiment of the present invention, the angles between all the blades and the separation rotating disk are ≤90°. When the centrifugal separation unit has two separation levels, the angle between the blades of the first separation level and the separation rotating disk is smaller than the angle between the blades of the second separation level and the separation rotating disk.

[0019] In the above technical solution, the density of oil is lower than that of water, and the pitch angle of the blade for separating the oil is larger, which is conducive to the discharge of the oil.

[0020] In another preferred embodiment of the utility model, the rotary drive mechanism includes a rotary motor arranged under the tank body, the output shaft of the rotary motor is coaxially fixed with a central shaft extending into the tank body, and all separation rotary disks are coaxially fixed on the central shaft; the central shaft is arranged from the bottom of the tank body to the top of the tank body, and bearings are arranged between the central shaft and the bottom and top of the tank body.

[0021] In the above technical solution, all separation rotating disks are driven by the same rotating motor, which has a simple structure and is conducive to the spatial arrangement of the rotating drive mechanism; the central axis is arranged from the bottom of the tank body through the top of the tank body, and the top of the tank body limits the upper end of the central axis to avoid bending of the central axis, and bearings are arranged at both ends of the central axis to make the rotation of the central axis smoother.

[0022] In a preferred embodiment of the utility model, an annular isolation ring is fixedly connected to the bottom of the tank body, and the separated oil falls to the bottom of the tank body between the isolation ring and the inner wall of the tank body, the oil outlet is connected to the bottom area of ​​the tank body between the isolation ring and the inner wall of the tank body, and the solid material outlet is connected to the bottom area of ​​the tank body within the isolation ring; and / or a solid material discharge paddle for discharging solids is provided below the centrifugal separation unit, and the solid material discharge paddle is connected to a rotating drive mechanism for driving it to rotate so as to scrape the solids at the bottom of the tank body to the solid material outlet.

[0023] The above technical solution isolates the oil outlet and the solid material outlet from each other by setting an isolation ring, so that the separated oil and solid matter are separated; the solid material outlet paddle is a scraper blade, which scrapes the solid matter at the bottom of the tank body, which is conducive to the rapid discharge of the solid matter from the solid material outlet.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 It is a structural schematic diagram of the kitchen waste feed preparation equipment of the first embodiment.

[0027] Figure 2 It is a structural schematic diagram of the kitchen waste feed preparation equipment of the second embodiment.

[0028] Figure 3 This is another structural schematic diagram of the kitchen waste feed preparation device of the second embodiment.

[0029] The reference numerals in the drawings of the specification include: tank 10, feed inlet 11, gas outlet 12, oil outlet 13, solid material outlet 14, isolation ring 15, drying unit 20, crushing unit 30, material receiving box 31, crushing blade 32, crushing valve 33, centrifugal separation unit 40, separation rotating disk 401, paddle 402, discharge valve 403, first separation level 41, first separation rotating disk 411, first paddle 412, first discharge valve 413, second separation level 42, second separation rotating disk 421, second paddle 422, second discharge valve 423, rotating motor 43, central shaft 44, bearing 45, dry material forming unit 50, receiving hopper 51, feed pipe 52, pressing pipe 53, cake outlet 531, screw conveyor 54, pressing plate 55, linear drive mechanism 56, receiving frame 57, solid material discharge paddle 60, water storage tank 71, condenser 711, oil storage tank 72. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0033] Embodiment 1

[0034] This embodiment provides a kitchen waste feed preparation device, such as Figure 1As shown, in a preferred embodiment, the feed preparation equipment includes a tank body 10 having a feed port 11, and the feed port 11 is arranged on the top of the tank body 10. A crushing unit 30, a centrifugal separation unit 40 and a drying unit 20 are arranged in the tank body 10. The tank body 10 also has a non-solid material outlet and a solid material outlet 14, and the solid material outlet 14 is connected to a dry material molding unit 50.

[0035] When the feed preparation device is used, the kitchen waste enters the crushing unit 30 through the feed inlet 11 and is crushed. After being crushed by the crushing unit 30, it enters the centrifugal separation unit 40. The centrifugal separation unit 40 rotates and the drying unit 20 works to heat. The fat is melted into oil. The liquid (including water and oil) in the kitchen waste is separated by the centrifugal separation unit 40 and discharged from the non-solid material outlet. The solid matter dried by the drying unit 20 after deliquidation is discharged from the solid material outlet 14 to the dry material forming unit 50, and is made into feed cakes by the dry material forming unit 50. In this embodiment, the separated liquid can be separated by an oil-water separator in the prior art, and the solid matter can also be made into feed cakes one by one by using an existing cake device. The feed cake can be used as a basic feed for later production of dog food, cat food, poultry feed, and aquaculture feed.

[0036] In the present invention, the drying unit 20 includes an electromagnetic heater or a resistance heating wire which is arranged outside the tank body 10 or embedded in the side wall of the tank body 10, and a heat preservation layer is arranged outside the electromagnetic heater or the resistance heating wire.

[0037] In the present utility model, the dry material forming unit 50 includes a receiving hopper 51 for storing solid materials connected to the solid material outlet 14, a vertically extending feeding pipe 52 connected to the outlet at the bottom of the receiving hopper 51, and a horizontally arranged pressing pipe 53 connected to the feeding connecting pipe. The receiving hopper 51 is provided with a screw conveyor 54 extending into the feeding pipe 52, and a motor driving the screw conveyor 54 to rotate is installed at the lower end of the tank body 10. The feed inlet 11 of the pressing pipe 53 is located at the top thereof, and a cake outlet 531 staggered from the feed inlet 11 is provided at the bottom or end of the pressing pipe 53, and a receiving frame 57 or a feeding conveyor belt is provided below the cake outlet 531. Two pressing plates 55 are arranged side by side in the pressing tube 53, respectively located on both sides of its feed port 11. The cake outlet 531 is located on the right side of the right pressing plate 55. The two pressing plates 55 are respectively connected to a linear driving mechanism 56 for driving them to move linearly in the pressing tube 53. The linear driving mechanism 56 is a cylinder or an electric cylinder. The pressed feed cake can be pushed to the cake outlet 531 and output by the pressing plate 55.

[0038] When making feed cakes, the solids separated from the tank body 10 are discharged to the receiving hopper 51 through the solid material outlet 14, and the screw conveyor 54 works to convey the solids in the receiving hopper 51 to the intermediate pressing tube 53 through the feeding tube 52, so that the solids are located between the two pressing plates 55. Since the distance between the two pressing plates 55 is fixed, the solids entering the pressing tube 53 are quantitative. The linear drive mechanism 56 on the left side works to make the pressing plate 55 on the left side move rightward, and the two pressing plates 55 squeeze the solids in the pressing tube 53 so that the solids are pressed into a cake shape; then the linear drive mechanism 56 on the right side works to make the pressing plate 55 on the right side move rightward to the right side of the cake outlet 531, and the linear drive mechanism 56 on the left side works to make the pressing plate 55 on the left side move rightward to push the feed cake to the cake outlet 531, and the feed cake is discharged from the cake outlet 531 to the receiving frame 57 or the feeding conveyor belt. Afterwards, the linear drive mechanisms 56 on the left and right sides work to move both pressing plates 55 to the left to reset.

[0039] In another preferred embodiment, the non-solid material outlet includes a gas outlet 12 for discharging water vapor and an oil outlet 13 for discharging oil. Preferably, the gas outlet 12 is arranged at the top of the tank body 10, and the oil outlet 13 and the solid material outlet 14 are arranged at the bottom of the tank body 10 and isolated from each other. Preferably, the gas outlet 12 is connected to a condenser 711 through a pipeline, and the outlet of the condenser 711 is connected to a water storage container. The discharged water vapor is reduced to liquid water through the condenser 711 and collected by the water storage container; the non-solid material outlet is connected to an oil receiving container for collecting oil.

[0040] The centrifugal separation unit 40 has one or two separation levels. This embodiment is described by taking two separation levels spaced apart along the height direction of the tank body 10 as an example. The two separation levels are a first separation level 41 located at the top and a second separation level 42 located at the bottom.

[0041] The kitchen waste crushed by the crushing unit 30 enters the first separation stage 41. The first separation stage 41 operates at a first rotation speed, and the drying unit 20 operates at a first temperature state (the first temperature is higher than the boiling point of water and lower than the boiling point of fat, ensuring that water can be gasified into water vapor and fat will not be gasified). Under the action of centrifugal force, water with a higher density in the kitchen waste is thrown out from the first separation stage 41 for separation, and the partially melted oil with a lower density is not thrown out due to insufficient centrifugal force. Under the action of the drying unit 20, the water is gasified into water vapor and discharged from the gas outlet 12, and is condensed into water by the condenser 511 and stored in the water storage tank 51, thereby realizing water separation and recovery.

[0042] The kitchen waste separated from water enters the second separation stage 42. The second separation stage 42 operates at a second rotation speed. The drying unit 20 operates at a second temperature state. The second rotation speed is greater than the first rotation speed to provide a greater centrifugal force. The second temperature is higher than the first temperature. The second temperature is lower than the boiling point of grease (including oil liquid) to ensure that the oil liquid will not be vaporized. Under the centrifugal force of the second separation stage 42 and the temperature, under the second temperature of the drying unit 20, the grease is completely heated and melted into oil liquid. The rotation speed of the second separation stage 42 is greater than the first separation stage 41 to provide a greater centrifugal force. Under the centrifugal force of the second separation stage 42, the oil liquid in the kitchen waste can be separated and discharged from the oil outlet 13 to the oil storage tank 52, so as to achieve the separation and recovery of the grease; the remaining solid matter is discharged to the solid recovery tank 53 through the solid material outlet 14, so as to achieve the separation and recovery of the solid matter.

[0043] In a preferred embodiment of the present utility model, an annular isolation ring 15 is fixedly connected to the bottom of the tank body 10, and the separated oil falls to the bottom of the tank body 10 between the isolation ring 15 and the inner wall of the tank body 10, the oil outlet 13 is connected to the bottom area of ​​the tank body 10 between the isolation ring 15 and the inner wall of the tank body 10, and the solid material outlet 14 is connected to the bottom area of ​​the tank body 10 within the isolation ring 15, so that the oil outlet 13 and the solid material outlet 14 are isolated from each other, and the separated oil is separated from the solid matter.

[0044] In the utility model, the first separation level 41 and the second separation level 42 have the same structure, and the side walls of the separation levels are provided with drainage channels for liquid discharge. The drainage channels are narrow, and solid matter cannot be discharged from the drainage channels. Under the action of centrifugal force, the liquid in the original mixture is thrown out from the drainage channel and splashes onto the inner wall of the tank body 10. The thrown out water is heated by the drying unit 20 to be vaporized into water vapor, and the thrown out oil splashes onto the inner wall of the tank body 10. Under the drainage action of the inner wall of the tank body 10, the oil falls to the bottom of the tank body 10 and is discharged from the oil outlet 13.

[0045] Specifically, each separation level includes at least one separation rotating disk 401 located in the tank body 10 and arranged at intervals along the height direction of the tank body 10, and a rotation drive mechanism that drives the separation rotating disk 401 to rotate, for example, two separation rotating disks 401 are arranged in one separation level; there is a gap between the outer wall of the separation rotating disk 401 and the inner wall of the tank body 10, and an annular paddle 402 is fixedly connected to the outer periphery of the separation rotating disk 401, and a discharge port is provided on the separation rotating disk 401, and a discharge valve 403 is provided at the discharge port. Among them, the first separation level 41 includes the first separation rotating disk 411, the first paddle 412, the first discharge port and the first discharge valve 413, and the second separation level 42 includes the second separation rotating disk 421, the second paddle 422, the second discharge port and the second discharge valve 423.

[0046] The drainage channel is a plurality of vertically extending drainage slits circumferentially spaced on the blade 402; or the blade 402 includes a plurality of circumferentially spaced sub-blades, and the gaps between adjacent sub-blades are the drainage channel. Then the drainage slits on the blade or the gaps between adjacent blades are the channels for discharging the centrifugally separated liquid.

[0047] In one embodiment, two first separation rotating disks 411 are connected in series, and two second separation rotating disks 421 are also connected in series. The original mixture first enters the upper first separation rotating disk 411, and the rotary drive mechanism drives the first separation rotating disk 411 to rotate. Under the action of centrifugal force, most of the water in the original mixture is thrown out to the inner wall of the tank body 10 through the drainage channel on the first blade 412 for separation; the first discharge valve 413 of the upper first separation rotating disk 411 is opened, and the mixture enters the lower first separation rotating disk 411 for secondary water separation. The mixture after water separation enters the upper second separation rotating disk 421, and the rotary drive mechanism drives the second separation rotating disk 421 to rotate. Under the action of centrifugal force, most of the oil in the mixture is thrown out to the inner wall of the tank body 10 through the drainage channel on the second blade 422 for separation; the second discharge valve 423 of the upper second separation rotating disk 421 is opened, and the mixture enters the lower second separation rotating disk 421 for secondary oil-liquid separation.

[0048] In another embodiment, two first separation rotating disks 411 are connected in parallel, and two second separation rotating disks 421 are also connected in parallel. The original mixture first enters the first separation rotating disk 411 of the upper layer, and part of the original mixture enters the first separation rotating disk 411 of the lower layer through the first discharge port of the first separation rotating disk 411 of the upper layer. The two first separation rotating disks 411 rotate simultaneously to separate water; the mixture after water separation enters the second separation rotating disk 421 of the upper layer, and part of the mixture enters the second separation rotating disk 421 of the lower layer through the second discharge port of the second separation rotating disk 421 of the upper layer. The two second separation rotating disks 421 rotate simultaneously to separate oil and liquid, thereby improving efficiency.

[0049] In a preferred embodiment of the present invention, the first separation rotating disk 411 and the second separation rotating disk 421 are driven by a set of rotation drive mechanism. Specifically, the rotation drive mechanism includes a rotation motor 43 disposed below the tank body 10, the rotation speed of the rotation motor 43 is adjustable, the output shaft of the rotation motor 43 is coaxially fixed with a central shaft 44 extending into the tank body 10, and the first separation rotating disk 411 and the second separation rotating disk 421 are coaxially fixed on the central shaft 44. Preferably, the central shaft 44 is arranged from the bottom of the tank body 10 to the top of the tank body 10, and bearings 45 are arranged between the central shaft 44 and the bottom of the tank body 10 and the top of the tank body 10.

[0050] The rotating motor 43 works to rotate the first separation rotating disk 411 and the second separation rotating disk 421. When the first separation rotating disk 411 separates water, the second separation rotating disk 421 idles. When the second separation rotating disk 421 separates oil, the first separation rotating disk 411 idles.

[0051] In another preferred embodiment of the utility model, a solid discharge paddle 50 for discharging solids is further provided below the second separation level 42. The solid discharge paddle 50 is located in the isolation ring 15. The solid discharge paddle 50 is connected to a rotating drive mechanism that drives it to rotate so as to scrape the solids at the bottom of the tank body 10 to the solid outlet 14. The solid discharge paddle 50 is a scraping blade that scrapes the solids at the bottom of the tank body 10 to discharge them from the solid outlet 14. Preferably, the solid discharge paddle 50 is also fixed to the central shaft 44 and driven to rotate by the rotary motor 43.

[0052] In another preferred embodiment of the present invention, the angle between the first paddle 412 and the first separation rotating disk 411 and the angle between the second paddle 422 and the second separation rotating disk 421 are both ≤90°, and the angle between the first paddle 412 and the first separation rotating disk 411 is smaller than the angle between the second paddle 422 and the second separation rotating disk 421. For example, the pitch angle of the first paddle 412 is 20° to 80°, which is conducive to the removal of water in the kitchen leftovers, and the pitch angle of the second paddle 422 is 81° to 90°, which is conducive to the removal of oil in the kitchen leftovers.

[0053] In the present invention, the crushing unit 30 includes a receiving box 31 for accommodating kitchen waste, a crushing blade 32 disposed in the receiving box 31, and a crushing drive mechanism for driving the crushing blade 32 to rotate. Preferably, the crushing blade 32 is coaxially fixed to the central shaft 44, and the crushing drive mechanism is a rotating motor 43 disposed below the tank body 10, and the crushing blade 32 is driven to rotate by the rotating motor 43. The receiving box 31 is provided with a crushing outlet, and a crushing outlet valve 33 is provided at the crushing outlet. Preferably, the upper end of the receiving box 31 is fixed to the inner wall of the top of the tank body 10, and the feed port 11 is communicated with the inside of the receiving box 31 to prevent the kitchen waste from splashing out of the receiving box 31 when being crushed.

[0054] The rotating motor 43 works to make the central shaft 44 drive the crushing blade 32 to rotate. The crushing blade 32 rotates to crush the kitchen waste in the receiving box 31. The crushed material outlet valve 33 opens, and the crushed kitchen waste falls into the centrifugal separation unit 40 through the crushed material outlet. At this time, the crushing blade 32 still rotates and acts as a scraper to facilitate the rapid discharge of the crushed kitchen waste. When the crushing blade 32 rotates to crush the kitchen waste, the first separation stage 41 and the second separation stage 42 rotate idle.

[0055] It should be noted that a crushing motor can also be provided to drive the crushing blade 32 to rotate. The crushing motor is installed outside the top of the tank body 10, and the output shaft of the crushing motor is coaxially fixedly connected with a rotating shaft that passes through the top of the tank body 10 and extends downward to the material receiving box 31. The crushing blade 32 is coaxially fixedly connected to the rotating shaft. At this time, the central axis 44 does not pass through the top of the tank body 10 and does not extend into the material receiving box 31.

[0056] Embodiment 2

[0057] The structure and principle of this embodiment are basically the same as those of the first embodiment, except that the centrifugal separation unit 40 of this embodiment is only provided with one separation level, and in this embodiment, the separation level may be provided with one separation rotating disk 401 and two separation rotating disks 401 .

[0058] like Figure 2 As shown, when a separation rotating disk 401 is provided, the kitchen waste crushed by the crushing unit 30 enters the separation rotating disk 401 of the centrifugal separation unit 40, the separation rotating disk 401 operates at a first speed, and the drying unit 20 operates at a first temperature state. Under the action of centrifugal force, water in the kitchen waste is thrown out from the centrifugal separation unit 40 and splashes onto the inner wall of the tank body 10 for separation. The oil liquid with a smaller density will not be thrown out due to insufficient centrifugal force. Under the action of the drying unit 20, the water is gasified into water vapor and discharged from the gas outlet 12, thereby achieving water separation. When separating water, the grease has enough time to melt into oil liquid. After the water is separated, the separation rotating disk 401 increases the speed to the second speed to provide a greater centrifugal force. Under the action of centrifugal force, the oil liquid in the kitchen waste is thrown out and splashes onto the inner wall of the tank body 10 for separation. The oil liquid flows down along the inner wall of the tank body 10 to the bottom of the tank body 10 and is discharged from the oil outlet 13, thereby achieving oil liquid separation; the remaining solid matter is discharged from the solid material outlet 14, thereby achieving solid matter separation.

[0059] like Figure 3 As shown, when two separation rotating disks 401 are provided, the two separation rotating disks 401 are connected in parallel, the kitchen waste first enters the upper separation rotating disk 401, and part of the kitchen waste enters the lower separation rotating disk 401 through the solid material outlet 14 of the upper separation rotating disk 401. The two separation rotating disks 401 rotate at the first speed at the same time to separate water. After the water is separated, the speed of the separation rotating disk 401 is increased to the second speed, and the oil and liquid are separated by a greater centrifugal force, thereby improving efficiency.

[0060] In the description of this specification, the description with reference to the terms "preferred embodiment", "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0061] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A kitchen waste feed preparation device, characterized in that: It comprises a tank body with a feed inlet, wherein a crushing unit, a centrifugal separation unit and a drying unit are arranged in the tank body, and the tank body also has a solid material outlet and a non-solid material outlet, wherein the solid material outlet is connected to a dry material forming unit; The kitchen waste enters the crushing unit through the feed inlet and is crushed. After being crushed by the crushing unit, it enters the centrifugal separation unit. The centrifugal separation unit rotates and the drying unit works to heat. The liquid in the kitchen waste is separated by the centrifugal separation unit and discharged from the non-solid material outlet. The dried solid matter is discharged from the solid material outlet to the dry material forming unit, and is made into feed cakes by the dry material forming unit.

2. The kitchen waste feed preparation device according to claim 1, characterized in that: The drying unit comprises an electromagnetic heater or a resistance heating wire arranged outside the tank body or in the side wall of the tank body.

3. The kitchen waste feed preparation device according to claim 1, characterized in that: The crushing unit comprises a material receiving box for accommodating kitchen waste, a crushing blade arranged in the material receiving box, and a crushing driving mechanism for driving the crushing blade to rotate. The material receiving box is provided with a crushing outlet, and a crushing outlet valve is provided at the crushing outlet.

4. The kitchen waste feed preparation device according to claim 1, characterized in that: The dry material forming unit includes a receiving hopper connected to the solid material outlet for storing solid materials, a feeding pipe connected to the receiving hopper outlet, and a horizontally arranged pressing pipe connected to the feeding connecting pipe. The receiving hopper is provided with a screw conveyor extending into the feeding pipe. The feeding port of the pressing pipe is located at the top thereof, and the bottom or end of the pressing pipe is provided with a material cake outlet staggered with the feeding port. The pressing pipe is provided with two pressing plates arranged side by side on both sides of the feeding port, respectively. The two pressing plates are respectively connected with a linear driving mechanism for driving them to move linearly in the pressing pipe, and the pressed feed cakes can be pushed to the material cake outlet and output by the pressing plates.

5. The kitchen waste feed preparation device according to any one of claims 1 to 4, characterized in that: The non-solid material outlet includes a gas outlet for discharging water vapor and an oil outlet for discharging oil, and the oil outlet and the solid material outlet are arranged at the bottom of the tank body and isolated from each other; The centrifugal separation unit has one or two separation stages; When the centrifugal separation unit has one separation level, the kitchen waste after being crushed by the crushing unit enters the centrifugal separation unit, the centrifugal separation unit operates at a first rotation speed, and the drying unit operates at a first temperature state, the first temperature is higher than the boiling point of water and lower than the boiling point of fat, the liquid in the kitchen waste is driven and separated by the centrifugal separation unit, and the water is gasified into water vapor and discharged from the gas outlet under the action of the drying unit; then the centrifugal separation unit operates at a second rotation speed that is the same as or different from the first rotation speed, the drying unit operates at a second temperature state, the second temperature is higher than the first temperature, under the action of centrifugal force and temperature, the fat is heated and melted into oil by the drying unit, the oil in the kitchen waste can be separated and discharged from the oil outlet to the oil storage tank, and the remaining solid matter is discharged from the solid material outlet; When the centrifugal separation unit has two separation stages, the kitchen waste crushed by the crushing unit enters the first separation stage of the centrifugal separation unit in the tank body, the first separation stage of the centrifugal separation unit operates at a first rotation speed, and the drying unit operates at a first temperature state, the first temperature is higher than the boiling point of water and lower than the boiling point of fat, the liquid in the kitchen waste is driven and separated by the centrifugal separation unit, and the water is gasified into water vapor and discharged from the gas outlet under the action of the drying unit; then the kitchen waste enters the second separation stage and operates at a second rotation speed, the drying unit operates at a second temperature state, the second rotation speed is the same as or different from the first rotation speed, and the second temperature is higher than the first temperature, under the action of centrifugal force and temperature, the fat is heated and melted into oil by the drying unit, the oil in the kitchen waste can be separated and discharged from the oil outlet to the oil storage tank, and the remaining solid matter is discharged from the solid material outlet.

6. The kitchen waste feed preparation device according to claim 5, characterized in that: The side wall of the separation level is provided with a liquid discharge channel for discharging the liquid. Under the action of centrifugal force, the liquid in the mixture can be thrown out from the liquid discharge channel and splash onto the inner wall of the tank body.

7. The kitchen waste feed preparation device according to claim 6, characterized in that: One of the separation levels comprises at least one separation rotating disk arranged in the tank body at intervals along the height direction of the tank body, and a rotation driving mechanism for driving the separation rotating disk to rotate, a gap is provided between the outer wall of the separation rotating disk and the inner wall of the tank body, an annular paddle is fixedly connected to the outer periphery of the separation rotating disk, a discharge port is provided on the separation rotating disk, and a discharge valve is provided at the discharge port; The drainage channel is a plurality of vertically extending drainage gaps circumferentially spaced on the blade; or the blade includes a plurality of sub-blades circumferentially spaced, and the gaps between adjacent sub-blades are the drainage channel.

8. The kitchen waste feed preparation device according to claim 7, characterized in that: The angles between all the blades and the separation rotating disk are ≤90°. When the centrifugal separation unit has two separation levels, the angle between the blades of the first separation level and the separation rotating disk is smaller than the angle between the blades of the second separation level and the separation rotating disk.

9. The kitchen waste feed preparation device according to claim 7, characterized in that: The rotary drive mechanism comprises a rotary motor disposed below the tank body, the output shaft of the rotary motor is coaxially fixedly connected to a central shaft extending into the tank body, and all the separation rotary discs are coaxially fixedly connected to the central shaft; The central axis is arranged from the bottom of the tank body through the top of the tank body, and bearings are arranged between the central axis and the bottom of the tank body and the top of the tank body.

10. The kitchen waste feed preparation device according to any one of claims 5 to 9, characterized in that: The bottom of the tank body is fixedly connected with an annular isolating ring, and the separated oil falls to the bottom of the tank body between the isolating ring and the inner wall of the tank body, the oil outlet is connected with the bottom area of ​​the tank body between the isolating ring and the inner wall of the tank body, and the solid material outlet is connected with the bottom area of ​​the tank body within the isolating ring; And / or a solid discharging paddle for discharging solids is provided below the centrifugal separation unit, and the solid discharging paddle is connected to a rotary drive mechanism that drives it to rotate so as to scrape solids at the bottom of the tank body to the solid outlet.

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