Kitchen waste raw material processing device and processing method

Abstract

The present invention relates to the technical field of kitchen waste treatment, specifically a kitchen waste raw material treatment device and treatment method; it includes a debris removal device; the debris removal device includes a horizontally placed rotating drum and a spiral plate rotatably connected to the inner side of the rotating drum; the left port of the rotating drum is rotatably sealed and connected to the discharge sleeve; the teeth on the outer wall of the discharge sleeve are engaged with the gear; the gear is driven by a main motor; the left port of the discharge sleeve is rotatably sealed and connected to the discharge shell; the left end of the spiral plate is fixedly connected to the discharge sleeve; the outer diameter of the spiral plate remains consistent in the axial direction; the inner diameter of the spiral plate decreases in the axial direction as it approaches the discharge sleeve; a scraper is provided on the inner edge of the spiral plate; the feed pipe in the debris removal device of the present invention continuously enters the kitchen waste raw material, the spiral plate continuously spreads and screens the kitchen waste raw material, and the scraper continuously scrapes the garbage in the raw material away from the inner position of the spiral plate, thereby ensuring the treatment efficiency of the kitchen waste raw material.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen waste treatment, and in particular to a kitchen waste raw material treatment device and a treatment method. Background Art

[0002] Kitchen waste, generated by the catering industry, workplace canteens, and household consumption, has become a major threat to the environment in my country's urbanization. Due to its high moisture content and susceptibility to bacterial contamination and odor, kitchen waste, especially restaurant waste, presents a challenge in urban management. Current biochemical treatments, such as composting, are often implemented in various locations, but their simplicity makes them unlikely to generate economic benefits.

[0003] When kitchen waste is pulped for the production of feed additives, the large amount of plastic bags and other garbage contained in it can pose a serious threat to subsequent production and equipment operation, such as causing valve blockage, equipment failure, and even production stoppage. Therefore, it is crucial to remove impurities and obtain high-purity fermentable pulp. Currently, coarse screens and other equipment are commonly used to remove impurities. The kitchen waste raw materials pass through the fence, and a large amount of plastic bags and other garbage are intercepted. However, coarse screens and other filter elements have obvious defects. They rely on the kinetic energy of the kitchen waste itself to pass through, and the impurity removal efficiency is low. In addition, the gaps in the fence are small, and impurities such as plastic bags are easy to adhere to and entangle, and they can also be embedded in the gaps. Conventional cleaning is difficult to completely remove, which not only reduces the screening efficiency, but also affects the impurity removal effect and hinders subsequent filtration. Summary of the Invention

[0004] In order to make up for the shortcomings of the existing technology, the present invention proposes a kitchen waste raw material processing device and processing method. The present invention continuously feeds kitchen waste raw materials into the device through a feeding pipe, the spiral plate continuously spreads and screens the kitchen waste raw materials, and the scraping bar continuously scrapes away the garbage in the raw materials from the inner side of the spiral plate, thereby ensuring the processing efficiency of the kitchen waste raw materials.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a kitchen waste raw material processing device described in the present invention includes a de-improvement device; the de-improvement device includes a horizontally placed rotating drum and a spiral plate rotatably connected to the inner side of the rotating drum; the left end of the rotating drum is rotatably sealed and connected to the discharge sleeve; the teeth of the outer wall of the discharge sleeve are engaged with the gear; the gear is driven by the main motor; the left end of the discharge sleeve is rotatably sealed and connected to the discharge shell; the left end of the spiral plate is fixedly connected to the discharge sleeve; the outer diameter of the spiral plate remains consistent in the axial direction; the inner diameter of the spiral plate decreases in the axial direction as it approaches the discharge sleeve; a scraper is provided on the inner edge of the spiral plate; the left end of the scraper is connected to the discharge shell; the outside of the rotating drum is supported by a bracket; the right end of the rotating drum is connected to the feed pipe; the left end of the feed pipe extends to the inner side of the spiral plate; a slag discharge pipe is provided downwardly through the lower position of the inner wall of the rotating drum.

[0006] Preferably, the inner diameter of the discharge sleeve increases from right to left; the inner diameter of the right end of the discharge sleeve is larger than the inner diameter of the left end of the spiral plate.

[0007] Preferably, a first arc-shaped groove is provided through the right inner wall of the rotating drum; the right end port of the rotating drum is located above the first arc-shaped groove; and the first arc-shaped groove is opened and closed with an arc-shaped door.

[0008] Preferably, the inner wall of the right end of the rotating drum is fixedly connected to the support rod along the axial direction of the rotating drum; the support rod contacts the lower position of the outer wall of the spiral plate along the axial direction of the rotating drum; a gap is left between the left end of the support rod and the left end of the inner wall of the rotating drum.

[0009] Preferably, a second annular groove is provided on the right inner wall of the rotating drum; a second annular plate is connected to the sliding seal in the second annular groove; a first threaded hole is provided through the bottom of the second annular groove toward the right; a first bolt is threadedly connected to the first threaded hole; the left end of the first bolt is rotatably connected to the second annular plate; the right end of the spiral plate extends into the second annular groove; and the spiral plate is elastic.

[0010] Preferably, the left end surface of the second annular plate is provided with an arc block; the arc block is provided with an arc chamfer in the circumferential direction of the second annular plate.

[0011] Preferably, an air vent is provided at the bottom of the second annular groove toward the right; a second bolt is movably connected in the air vent; a second arc groove is evenly provided at the left end of the second annular plate; the arc block is slidingly and sealedly connected in the second arc groove; the arc block and the bottom of the second arc groove are connected by a tension spring; the tensions of the multiple tension springs are different; a driving groove is provided inside the second annular plate; the driving plate is slidingly and sealably connected in the driving groove; the left inner wall of the driving groove and the bottom of the second arc groove are connected by a liquid hole; a second threaded hole is provided on the right inner wall of the driving groove toward the right; and the second bolt is threadedly connected in the second threaded hole.

[0012] Preferably, the opening of the discharge shell faces downward; the discharge shell is rotatably and sealedly connected to the turntable at the left position; the outer side of the turntable is driven by the auxiliary motor; the discharge shell is fixedly connected to the main motor; and the turntable is connected to the left end of the scraper.

[0013] Preferably, a radial groove is provided on the inner side of the rotary disc along the radial direction; a radial block is slidably connected in the radial groove; and the radial block is hinged to the left end of the scraper strip.

[0014] A method for processing kitchen waste raw materials is applicable to the above-mentioned kitchen waste raw material processing device, and the method comprises the following steps: S1, impurity removal and pulping of kitchen waste: garbage contained in the kitchen waste is removed by an impurity removal device to obtain pulp; S2, enzymatic hydrolysis and sterilization: the pulp in S1 is subjected to enzymatic hydrolysis and heat sterilization to form high-temperature pulp; S3, three-phase separation and oil extraction: the high-temperature pulp in S2 is introduced into a three-phase centrifuge for oil-water-slag separation; S4, wet residue fermentation and drying: the wet residue after the three-phase separation in S3 is converted into yeast cells by yeast fermentation, and is dried by material drying equipment to obtain a feed additive for breeding; S5, anaerobic and aerobic treatment of wastewater: the wastewater in S3 is subjected to anaerobic + aerobic + three-stage deep treatment and then discharged, and biogas generated during the anaerobic fermentation process is collected and utilized.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. The feed pipe of the present invention continuously feeds in kitchen waste raw materials, the spiral plate continuously spreads and screens the kitchen waste raw materials, and the scraper continuously scrapes away the garbage in the raw materials from the inner side of the spiral plate, thereby ensuring the processing efficiency of the kitchen waste raw materials. In addition, the movement direction of soft waste such as plastic bags is opposite to the flow direction of the slurry, so the slurry such as oil and water on the surface of the separated soft waste is more thoroughly removed, thereby improving the thoroughness of separation.

[0017] 2. The present invention achieves three-phase separation of soft waste, hard waste and slurry in kitchen waste raw materials through the spiral plate with an increasing inner diameter from left to right, the scraping of the scraper and the rotation of the spiral plate, and the separation functionality is stronger.

[0018] 3. In the present invention, when the gap of the spiral plate is cyclically reduced and increased, the raw materials in the gap of the spiral plate are loosened, thereby preventing the raw materials from being stuck in the gap of the spiral plate and affecting the passage of other raw materials, thereby improving the processing effect of the spiral plate on kitchen waste raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 It is a three-dimensional diagram of the impurity removal device of the present invention;

[0021] Figure 2 yes Figure 1 A three-dimensional image from another angle;

[0022] Figure 3 yes Figure 1 A cross-sectional view in the front-to-back direction;

[0023] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5is a position diagram of the radial blocks in the present invention;

[0025] Figure 6 is a perspective view of the second annular plate of the present invention;

[0026] Figure 7 yes Figure 6 sectional view of

[0027] Figure 8 It is a flow chart of the method of the present invention.

[0028] In the figure: rotating drum 1, bracket 11, feed pipe 12, slag discharge pipe 13, first arc groove 14, support rod 16, second annular groove 17, first threaded hole 18, air vent 19, spiral plate 2, discharge sleeve 3, gear 31, main motor 32, discharge shell 4, turntable 41, auxiliary motor 42, radial groove 43, radial block 44, scraper 5, arc door 6, second annular plate 7, second bolt 70, first bolt 71, arc block 72, arc chamfer 73, second arc groove 74, tension spring 75, drive groove 76, drive plate 77, liquid hole 78, second threaded hole 79. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] like Figures 1 to 8 As shown, the present invention includes the following embodiments:

[0031] The hopper 31 is connected to the gear 31 on the left side of the hopper 3 and the gear 31 is connected to the gear 31 on the right side of the hopper 3.

[0032] In this embodiment, the inner diameter of the discharge sleeve 3 increases from right to left; the inner diameter of the right end of the discharge sleeve 3 is larger than the inner diameter of the left end of the spiral plate 2.

[0033] After the kitchen waste raw materials enter along the feed pipe 12 under the action of the raw material pump (not shown in the figure), the kitchen waste raw materials will enter the inner side of the spiral plate 2 along the left end of the feed pipe 12. The main motor 32 is located on the left side of the drum 1. The outer wall of the main motor 32 is fixedly connected to the outer wall of the drum 1. The main motor 32 will drive the gear 31 to rotate during operation. The gear 31 is engaged with the teeth of the outer wall of the discharge sleeve 3 for transmission. Therefore, the gear 31 will drive the discharge sleeve 3 to rotate during rotation, and the discharge sleeve 3 will drive the spiral plate 2 to rotate during rotation. The spiral plate 2 will generate relative movement with the scraper 5 during rotation. After the kitchen waste raw materials in the feed pipe 12 enter the inner side of the spiral plate 2, the rotation of the spiral plate 2 will push the kitchen waste raw materials The material is thrown up, and the kitchen waste raw materials generate centrifugal force under the rotation of the spiral plate 2, so that the kitchen waste raw materials are closely attached to the inner edge of the spiral plate 2. During the rotation of the spiral plate 2, it will produce relative movement with the scraper 5, and the scraper 5 will spread the accumulated raw materials on the inner side of the spiral plate 2 around the spiral plate 2. The soft garbage such as plastic bags in the raw materials are hung on the inner edge of the spiral plate 2 under the action of centrifugal force. Since the inner diameter of the spiral plate 2 decreases from right to left, the inner edge of the spiral plate 2 forms a slope that is higher on the left and lower on the right. Therefore, the part of the raw materials that is not hung by the inner edge of the spiral plate 2 will be spread along the inner edge of the spiral plate 2 toward away from the discharge sleeve 3, and the spread out kitchen waste raw materials can pass through the spiral plate 2 with a larger area. The gap between the spiral plates 2 improves the processing efficiency of the kitchen waste raw materials. The soft garbage in the spread kitchen waste raw materials is again caught by the inner edge of the spiral plate 2, and the raw material part not caught by the inner edge of the spiral plate 2 flows out through the spiral gap of the spiral plate 2, that is, the leftover soup and oil and water in the raw materials pass through the gap between the spiral plates 2 and are thrown from the inside of the spiral plate 2 to the outside of the spiral plate 2. The part of the raw materials minus the plastic bags and other garbage will form a slurry, which will be thrown on the inner wall of the rotating drum 1 under the rotation of the spiral plate 2 and finally discharged along the slag discharge pipe 13; the plastic bag soft garbage left after filtering on the inside of the spiral plate 2 will move toward the discharge sleeve 3 as the spiral plate 2 rotates. For the sake of ease of understanding, the spiral plate 2 can be compared with the scraper 5. Rotation is understood as the scraper 5 scraping on the inner side of the spiral plate 2. The scraper 5 will move the garbage on the spiral plate 2 along the spiral plate 2 direction of the spiral plate 2, so that the garbage will be scraped toward the discharge sleeve 3. The garbage will eventually be scraped into the discharge sleeve 3 and finally flow out along the discharge sleeve 3. Since soft garbage such as plastic bags are hung on the inner edge of the spiral plate 2 and are affected by centrifugal force, soft garbage such as plastic bags will not move along the inner edge of the spiral plate 2 away from the discharge sleeve 3. Instead, they will move toward the discharge sleeve 3 under the scraping of the scraper 5. The moving direction of soft garbage such as plastic bags is opposite to the flow direction of the slurry, so the slurry such as oil and water on the surface of the separated soft garbage is removed more thoroughly, thereby improving the thoroughness of separation.

[0034] Furthermore, the inner diameter of the discharge sleeve 3 is increased from right to left, and the inner diameter of the right end of the discharge sleeve 3 is larger than the inner diameter of the left end of the spiral plate 2. Therefore, the soft garbage at the left end of the spiral plate 2 can be smoothly scraped off by the scraper 5, and the garbage entering the discharge sleeve 3 will flow toward the larger diameter as the discharge sleeve 3 rotates. The diameter of the left end of the discharge sleeve 3 is larger than the diameter of the right end, so the garbage inside the discharge sleeve 3 will flow out quickly to the left; the feed pipe 12 continuously enters the kitchen waste raw material, the spiral plate 2 continuously spreads and screens the kitchen waste raw material, and the scraper 5 continuously scrapes the garbage in the raw material from the inner position of the spiral plate 2, thereby ensuring the processing efficiency of the kitchen waste raw material.

[0035] Example 2: A first arc-shaped groove 14 is provided on the right inner wall of the rotating drum 1 ; the right end of the rotating drum 1 is located above the first arc-shaped groove 14 ; the first arc-shaped groove 14 is opened and closed with an arc-shaped door 6 .

[0036] The feeding position of the feeding pipe 12 of the kitchen waste raw material is located in the middle of the drum 1. After the kitchen waste raw material is thrown onto the inner edge of the spiral plate 2 under the action of centrifugation, the soft garbage hangs on the inner edge of the spiral plate 2 and is scraped to the left end of the drum 1, while some larger hard garbage is intercepted on the inner side of the spiral plate 2 and finally moves toward a lower position along the inner edge of the spiral plate 2. The slurry in the kitchen waste raw material flows out through the gap of the spiral plate 2 during the process of spreading toward the right, and the remaining hard garbage flows out along the first arc-shaped groove 14. The opening size of the first arc-shaped groove 14 can be adjusted. It can be set according to needs, and the opening and closing of the arc door 6 can also be selectively opened and closed according to needs. In this way, the three-phase separation of soft garbage, hard garbage and slurry in the kitchen waste raw materials is achieved through the spiral plate 2 with an increasing inner diameter from left to right, the scraping of the scraper 5 and the rotation of the spiral plate 2, and the separation functionality is stronger; the feed pipe 12 in this embodiment is located at one end of the rotating drum 1 and can be set to an elastic and retractable shape, and is pushed by an electric push rod (not shown in the figure) to adjust the feed position, which is not specifically shown in the figure. It is set according to needs and will not be elaborated here.

[0037] Example 3: The inner wall of the right end of the rotating drum 1 is fixedly connected to the support rod 16 along the axial direction of the rotating drum 1; the support rod 16 contacts the lower position of the outer wall of the spiral plate 2 along the axial direction of the rotating drum 1; a gap is left between the left end of the support rod 16 and the left end of the inner wall of the rotating drum 1.

[0038] During the rotation of the spiral plate 2, the lower outer wall of the spiral plate 2 is supported by the support rod 16, which increases the strength of the spiral plate 2, prevents the spiral plate 2 from collapsing inside the drum 1, and improves the stability of the spiral plate 2 in processing kitchen waste raw materials; and the raw materials hanging on the support rod 16 can be pulled down from the left end of the support rod 16 when the spiral plate 2 and the support rod 16 rotate relative to each other.

[0039] Example 4: A second annular groove 17 is provided on the right inner wall of the rotating drum 1; the second annular plate 7 is connected to the sliding seal in the second annular groove 17; a first threaded hole 18 is provided through the bottom of the second annular groove 17 facing rightward; the first threaded hole 18 is threadedly connected to the first bolt 71; the left end of the first bolt 71 is rotatably connected to the second annular plate 7; the right end of the spiral plate 2 extends into the second annular groove 17; the spiral plate 2 is elastic.

[0040] When the first bolt 71 is tightened, the first bolt 71 will rotate in the first threaded hole 18, and the first bolt 71 is rotationally connected to the second annular plate 7. Therefore, the first bolt 71 can drive the second annular plate 7 to move left when it rotates forward, and the right end of the spiral plate 2 will move left during the left movement of the second annular plate 7, thereby reducing the spiral pitch of the spiral plate 2. The first bolt 71 can drive the second annular plate 7 to move right when it rotates reversely, and the right end of the spiral plate 2 will move right during the right movement of the second annular plate 7, thereby increasing the spiral pitch of the spiral plate 2. By changing the spiral pitch of the spiral plate 2, garbage of different specifications can be filtered, thereby improving the applicability of the impurity removal device.

[0041] Embodiment 5: An arc block 72 is provided on the left end surface of the second annular plate 7 ; the arc block 72 is provided with an arc chamfer 73 in the circumferential direction of the second annular plate 7 .

[0042] In this embodiment, a ventilation hole 19 is provided at the bottom of the second annular groove 17 toward the right; a second bolt 70 is movably connected in the ventilation hole 19; a second arc groove 74 is evenly provided on the left end of the second annular plate 7; the arc block 72 is slidingly and sealedly connected in the second arc groove 74; the arc block 72 and the bottom of the second arc groove 74 are connected by a tension spring 75; the tensions of the multiple tension springs 75 are different; a driving groove 76 is provided inside the second annular plate 7; a driving plate 77 is slidingly and sealedly connected in the driving groove 76; the left inner wall of the driving groove 76 is connected to the bottom of the second arc groove 74 through a liquid hole 78; a second threaded hole 79 is provided on the right inner wall of the driving groove 76 toward the right; the second bolt 70 is threadedly connected in the second threaded hole 79.

[0043] As the discharge sleeve 3 rotates, the spiral plate 2 will produce relative movement with the second annular plate 7. In the process of the right end of the spiral plate 2 passing through the arc block 72, it will be squeezed with the arc block 72. The arc chamfer 73 on the arc block 72 enables the smooth movement of the right end of the spiral plate 2. Under the guidance of the arc chamfer 73, the right end of the spiral plate 2 can move left to the left vertex of the arc block 72. The left movement of the right end of the spiral plate 2 will reduce the distance between the spiral plates 2. After the right end of the spiral plate 2 passes over the arc block 72, the right end of the spiral plate 2 will move back to the left vertex of the arc block 72. The spiral plate 2 is moved to the right and reset under the action of its own elastic force, the distance between the spiral plates 2 is increased, and the right end of the spiral plate 2 will come into contact with the left end surface of the second annular plate 7. As the right end of the spiral plate 2 contacts and passes over the arc block 72 again, the distance between the spiral plates 2 is reduced and increased again, and this is repeated. When the gap between the spiral plates 2 is cyclically reduced and increased, the raw materials in the gap between the spiral plates 2 are loosened, avoiding the raw materials from being stuck in the gap position of the spiral plates 2 and affecting the passage of other raw materials, thereby improving the processing effect of the spiral plate 2 on the kitchen waste raw materials; further, by controlling the arc block 72 from The length and number of the extensions in the second arc groove 74 are used to change the frequency and amplitude of the spacing change of the spiral plate 2. Specifically, by screwing the second bolt 70 and moving along the second threaded hole 79, the second bolt 70 moves left or right when screwing. In the process of moving left after the second bolt 70 is screwed, the driving plate 77 is squeezed to move left in the driving groove 76. The driving plate 77 squeezes the liquid medium in the driving groove 76 space on the left side of the driving plate 77. The liquid medium in the driving groove 76 space on the left side of the driving plate 77 flows into the second arc groove 74 along the liquid hole 78. As the second The amount of liquid medium in the arc groove 74 increases, thereby pushing the arc block 72 in the second arc groove 74 to move outward. The degree of outward movement of the arc block 72 increases with the increase of liquid medium entering the second arc groove 74. The arc block 72 is fixedly connected to the bottom of the second arc groove 74 by the tension spring 75. Therefore, under different liquid pressures in the second arc groove 74, the number of arc blocks 72 extending from the second arc groove 74 is different. By changing the number of arc blocks 72 extending from the second arc groove 74, the contact frequency between the spiral plate 2 and the arc block 72 can be changed to meet different usage requirements.

[0044] Example 6: The opening of the discharge shell 4 faces downward; the discharge shell 4 is rotatably and sealedly connected to the turntable 41 at the left position; the outer side of the turntable 41 is driven by the auxiliary motor 42; the discharge shell 4 is fixedly connected to the main motor 32; the turntable 41 is connected to the left end of the scraper 5.

[0045] In this embodiment, a radial groove 43 is provided radially on the inner side of the rotary disc 41 ; a radial block 44 is slidably connected in the radial groove 43 ; and the radial block 44 is hinged to the left end of the scraper strip 5 .

[0046] When the main motor 32 drives the discharge sleeve 3 to rotate, the discharge sleeve 3 will drive the spiral plate 2 to rotate, and the auxiliary motor 42 will also drive the turntable 41 to rotate. When the turntable 41 rotates, the scraper 5 will be driven to rotate. The scraper 5 and the spiral plate 2 are differentially driven in the same direction. The speed of the scraper 5 is slightly lower than that of the spiral plate 2, so that the spiral plate 2 can process the kitchen waste raw materials under the action of a higher centrifugal force while moving at a lower speed of the scraper 5 to scrape the garbage, thus ensuring the thoroughness of the kitchen waste raw materials. In addition, by changing The rotational differential between the scraper bar 5 and the spiral plate 2 is used to change the speed at which the scraper bar 5 scrapes the garbage and raw materials on the inner edge of the spiral plate 2, thereby meeting different usage requirements; further, the left end of the scraper bar 5 is hinged to the radial block 44, and the radial block 44 is slidably connected to the radial groove 43. Therefore, when the spiral pitch of the spiral plate 2 changes, the scraper bar 5 will also cling to the inner edge of the spiral plate 2 under the action of centrifugal force, and can change with the taper of the inner edge of the spiral plate 2, thereby ensuring the scraping effect of the scraper bar 5 on the garbage and raw materials on the inner edge of the spiral plate 2.

[0047] Example 7: A method for processing kitchen waste raw materials, which is suitable for the above-mentioned kitchen waste raw material processing device, and the steps of the method are as follows: S1, impurity removal and pulping of kitchen waste: the garbage contained in the kitchen waste is removed by an impurity removal device to obtain a slurry; S2, enzymatic hydrolysis and sterilization: the slurry in S1 is enzymatically hydrolyzed and heat-sterilized to form a high-temperature slurry; S3, three-phase separation and oil extraction: the high-temperature slurry in S2 is introduced into a three-phase centrifuge for oil-water slag separation; S4, wet slag fermentation and drying: the wet slag after three-phase separation in S3 is converted into yeast cells by yeast fermentation, and is dried by material drying equipment to obtain a breeding feed additive; S5, anaerobic and aerobic treatment of wastewater: the wastewater in S3 is discharged after anaerobic + aerobic + three-stage deep treatment, and the biogas generated during the anaerobic fermentation process is collected and utilized.

[0048] During the impurity removal and pulping of kitchen waste, a large amount of plastic bags and other garbage are contained in the kitchen waste. These soft garbage are extremely harmful to the subsequent fermentation, feed additive production, and equipment operation, causing blockage of pipeline valves, and then causing blockage or shutdown of equipment. These garbage are removed during production to obtain high-purity fermentable pulp; during enzymatic hydrolysis and sterilization, the pulp made after pulping and impurity removal has a high viscosity, contains a large amount of starch, protein, oil, cellulose, etc., and contains a large amount of miscellaneous bacteria. After enzymatic hydrolysis and heat sterilization, a high-temperature pulp is made, which greatly reduces the viscosity of the material, creates good separation conditions for the three-phase centrifugal separation of oil, water and residue, and also creates favorable conditions for the subsequent wet residue fermentation; in the three-phase separation and oil extraction, the viscosity of the pulp after enzymatic hydrolysis and sterilization is greatly reduced, and the oil, water and residue are separated by a three-phase centrifuge. The oil, water and residue are easily and effectively separated, and the oil extraction rate is greatly improved. The oil content in water is usually not higher than 3000P Pm; During the fermentation and drying of wet residue, the wet residue obtained after centrifugal separation contains a large amount of organic matter such as glucose, short peptides and amino acids. By using yeast for fermentation, the above substances can be converted into yeast bodies; After the above fermentation, the protein content of the material after drying is as high as 30% or more, which is an excellent feed additive for breeding; While the material is drying, a large amount of secondary steam will be generated. This part of the steam is used to heat the front-end slurry, which not only recovers the heat but also avoids the secondary pollution of the environment caused by a large amount of secondary steam; In the anaerobic and aerobic treatment of wastewater, the COD value of the clear liquid produced by centrifugation is between 60,000 and 100,000 mg / L. Anaerobic + aerobic + three-stage deep treatment of this wastewater can meet the three-level pipe standards of urban sewers and achieve standard discharge; The biogas generated during the anaerobic fermentation process is used as fuel for steam production, and the produced biogas can fully cover the steam demand in the entire food processing process.

[0049] In the treatment method, kitchen waste is made into a slurry after impurities are removed, and after enzymatic hydrolysis and sterilization, a slurry rich in substances such as glucose, short peptides and amino acids is obtained; this method technology uses biological enzyme preparations to enzymatically hydrolyze starch, fat, protein and cellulose, and then sterilizes them at high temperature to maximize the denaturation of the above organic matter, which is beneficial to the extraction of oil and creates ideal conditions for subsequent fermentation; the heating sterilization temperature is usually above 85°C, and the insulation time is more than 10 hours; the solid residue from the solid-liquid separation of the three-phase centrifuge contains a large amount of organic matter such as glucose, short peptides and amino acids, which can be converted into yeast bodies by fermentation using yeast; after the above fermentation, the material is dried to obtain a high-protein feed additive with a protein content of more than 30% and a moisture content of less than 12%, which can be widely used in aquaculture; the heat source used for sterilization does not use primary steam, but only uses the secondary steam generated by the dryer as the heat source, which recovers the heat and avoids secondary pollution to the environment caused by a large amount of secondary steam.

[0050] A large amount of starch and other fermentable sugars, fat, protein, cellulose, etc. in kitchen waste can be converted into fermentable sugars and cellulose into fermentable sugars by biotechnology, which effectively reduces the viscosity of kitchen waste slurry and significantly improves the crude oil extraction rate after three-phase centrifugation; the three-phase centrifugal wet residue is fermented and dried to obtain high-protein feed additives, and the COD value of the three-phase centrifugal clear liquid is between 60,000 and 100,000 mg / L. The wastewater is subjected to anaerobic + aerobic + three-level deep treatment to meet the three-level urban sewer pipe standards and achieve standard discharge; the biogas produced during the anaerobic fermentation process is used as fuel for steam production, and the produced biogas can fully cover the steam demand in the entire kitchen waste treatment process.

[0051] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0052] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A kitchen waste material processing device, comprising a cleaning device; characterized in that: The impurity removal device includes a horizontally placed drum and a spiral plate rotatably connected to the inner side of the drum; the left port of the drum is rotatably sealed and connected to the discharge sleeve; the teeth on the outer wall of the discharge sleeve are engaged with the gear; the gear is driven by the main motor; the left port of the discharge sleeve is rotatably sealed and connected to the discharge shell; the left end of the spiral plate is fixedly connected to the discharge sleeve; the outer diameter of the spiral plate remains consistent in the axial direction; the inner diameter of the spiral plate decreases in the axial direction as it approaches the discharge sleeve; a scraper is provided at the inner edge of the spiral plate; the left end of the scraper is connected to the discharge shell; the outside of the drum is supported by a bracket; the right port of the drum is connected to the feed pipe; the left end of the feed pipe extends to the inside of the spiral plate; a slag discharge pipe is provided downwardly through the lower position of the inner wall of the drum.

2. The kitchen waste material processing device according to claim 1, characterized in that: The inner diameter of the discharge sleeve increases from right to left; the inner diameter of the right end of the discharge sleeve is larger than the inner diameter of the left end of the spiral plate.

3. The kitchen waste material processing device according to claim 1, characterized in that: A first arc-shaped groove is provided through the right inner wall of the rotating drum; the right end of the rotating drum is located above the first arc-shaped groove; and the first arc-shaped groove is opened and closed with an arc-shaped door.

4. The kitchen waste material processing device according to claim 1, characterized in that: The inner wall of the right end of the rotating drum is fixedly connected to the support rod along the axial direction of the rotating drum; the support rod contacts the lower position of the outer wall of the spiral plate along the axial direction of the rotating drum; a gap is left between the left end of the support rod and the left end of the inner wall of the rotating drum.

5. The kitchen waste material processing device according to claim 1, characterized in that: A second annular groove is provided on the right inner wall of the rotating drum; a second annular plate is connected to the sliding seal in the second annular groove; a first threaded hole is provided through the bottom of the second annular groove toward the right; a first bolt is threadedly connected to the first threaded hole; the left end of the first bolt is rotatably connected to the second annular plate; the right end of the spiral plate extends into the second annular groove; the spiral plate is elastic.

6. The kitchen waste material processing device according to claim 5, characterized in that: The left end surface of the second annular plate is provided with an arc block; the arc block is provided with an arc chamfer in the circumferential direction of the second annular plate.

7. The kitchen waste material processing device according to claim 6, characterized in that: The bottom of the second annular groove is provided with an air vent toward the right; a second bolt is movably connected in the air vent; a second arc groove is evenly provided on the left end of the second annular plate; the arc block is slidingly and sealedly connected in the second arc groove; the arc block and the bottom of the second arc groove are connected by a tension spring; the tensions of the multiple tension springs are different; a driving groove is provided inside the second annular plate; the driving plate is slidingly and sealably connected in the driving groove; the left inner wall of the driving groove and the bottom of the second arc groove are connected by a liquid hole; a second threaded hole is provided on the right inner wall of the driving groove toward the right; the second bolt is threadedly connected in the second threaded hole.

8. The kitchen waste material processing device according to claim 5, characterized in that: The opening of the discharge shell faces downward; the discharge shell is rotatably and sealedly connected to the turntable at the left position; the outer side of the turntable is driven by the auxiliary motor; the discharge shell is fixedly connected to the main motor; and the turntable is connected to the left end of the scraper.

9. The kitchen waste material processing device according to claim 8, characterized in that: A radial groove is provided radially on the inner side of the rotating disk; a radial block is slidably connected in the radial groove; and the radial block is hinged to the left end of the scraper strip.

10. A method for processing kitchen waste raw materials, the method being applicable to the kitchen waste raw material processing device according to any one of claims 1 to 9, characterized in that: The steps of this method are as follows: S1, impurity removal and pulping of kitchen waste: garbage contained in the kitchen waste is removed by an impurity removal device to obtain pulp; S2, enzymatic hydrolysis and sterilization: the slurry in S1 is subjected to enzymatic hydrolysis and heat sterilization to form a high-temperature slurry; S3, three-phase separation and oil extraction: the high-temperature slurry in S2 is introduced into a three-phase centrifuge for oil-water-slag separation; S4, wet residue fermentation and drying: the wet residue after the three-phase separation in S3 is fermented into yeast cells by yeast, and then dried in a material drying equipment to obtain a feed additive; S5, anaerobic and aerobic wastewater treatment: The wastewater in S3 is discharged after anaerobic + aerobic + three-stage deep treatment, and the biogas generated during the anaerobic fermentation process is collected and utilized.

Images