A process for treating organic kitchen slurry

Abstract

The present invention discloses a process for treating organic food waste slurry, comprising the following steps: spraying distilled water from the inner wall of a treatment tank to rinse the organic food waste slurry, filtering the rinse liquid twice to obtain filtered liquid and filtered solids, placing the filtered solids and the solid-liquid mixture in a dehydrator for extrusion and dehydration to obtain extruded solids and extruded liquid; mixing the filtered liquid and extruded liquid to obtain a liquid to be treated; distilling the liquid to be treated to obtain distilled water and a concentrated solution; cooling and crystallizing the concentrated solution, and filtering the crystals to obtain an oil-water mixture. The present invention primarily achieves maximum salt dissolution of the solids in the organic food waste slurry into the distilled water by continuously stirring and squeezing the solids in the organic food waste slurry. The salt solution in the organic food waste slurry is promptly extruded, and the salt in the solids in the organic food waste slurry is redissolved with distilled water, thereby achieving a standard salt content in the organic food waste slurry.

Description

Technical Field

[0001] The present invention relates to the technical field of garbage disposal, and in particular to a process for treating kitchen organic slurry. Background Art

[0002] The amount of food waste in my country is enormous and is rapidly increasing. With the accelerating pace of urbanization, the environmental and ecological problems caused by food waste are becoming increasingly significant. Compared to other types of waste, food waste is high in moisture, oil, and salt, is easily perishable, and cannot be directly incinerated. This makes it difficult to treat, yet it also has reusable value. Therefore, it is necessary to process and reuse this food waste as a resource. Current pretreatment methods for food waste involve sorting the solid portion of the food waste after solid-liquid separation, pulping it to produce a food waste organic slurry, and then treating the organic slurry.

[0003] Currently, food waste slurry is treated by separating the solid and liquid in a dehydrator. The solids are then fermented to produce fertilizer, and the liquid is passed through an oil-water separator to produce bio-oil. However, due to the high salt content in the pre-treated food waste slurry, the treated fertilizer has a high salt content and does not meet usage standards. Therefore, reducing the salt content in food waste slurry is a key and difficult issue in food waste treatment.

[0004] Currently, the most common method for removing salt from organic food slurry is to dissolve the salt in the slurry with water, followed by solid-liquid separation through dehydration. However, due to the high salt content in organic food slurry, simple soaking or rinsing can only partially dissolve the salt in the slurry. The dissolved salt solution easily permeates the solids within the slurry, making it difficult to remove. As a result, the dehydrated solids still contain a large amount of salt. Although existing technologies use ion exchange to reduce the salt content in organic food slurry, this method is costly and inefficient. Therefore, it is of great significance to propose a low-cost and rapid method for removing salt from organic food slurry. Summary of the Invention

[0005] The object of the present invention is to provide a process for treating organic food pulp, so as to solve the technical problem that the treatment processes in the prior art cannot reduce the salt content in the organic food pulp to meet the standards at a low cost.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A process for treating organic kitchen slurry, comprising the following steps:

[0008] A processing box is provided, and a horizontally arranged rotating shaft is provided in the processing box, a stirring mechanism and two extrusion blocks arranged on both sides of the stirring mechanism and coaxially arranged with the rotating shaft are provided on the rotating shaft;

[0009] Inject the organic food slurry from the top of the treatment box so that the organic food slurry occupies two-thirds of the space in the treatment box;

[0010] Distilled water is sprayed from the inner wall of the treatment box to flush the organic food slurry, and during the flushing process, the stirring mechanism is continuously rotated in a forward and reverse direction to stir the organic food slurry, so that the salt in the organic food slurry is fully dissolved in the distilled water;

[0011] The two squeezing blocks are intermittently moved toward the middle of the treatment box to squeeze the food waste organic slurry to initially filter out the liquid inside the treatment box. The resulting flushing liquid is discharged from the drainage pipes on both sides of the treatment box, and the remaining solid-liquid mixture is discharged from the middle of the bottom of the treatment box.

[0012] The flushing liquid is filtered twice to obtain filtered liquid and filtered solid, and the filtered solid and solid-liquid mixture are placed in a dehydrator for extrusion and dehydration to obtain extruded solid and extruded liquid;

[0013] mixing the filtered liquid and the squeezed liquid to obtain a liquid to be treated;

[0014] Distill the liquid to be treated to obtain distilled water and concentrated liquid.

[0015] The concentrated liquid is cooled and crystallized, and the crystals are filtered out to obtain an oil-water mixture.

[0016] Furthermore, the processing box is configured as a horizontally placed cylindrical box body so that the outer surface of the extrusion block matches the inner wall of the processing box;

[0017] The number of stirring mechanisms is set to multiple groups. The rotation of the rotating shaft drives the stirring mechanism to rotate and drives the extrusion block to move toward the middle of the processing box. At the same time, due to the extrusion force of the extrusion block, the multiple stirring mechanisms also move toward the middle of the processing box.

[0018] Furthermore, the rotation speed of the rotating shaft varies periodically with the position of the extrusion block;

[0019] When the rotating shaft rotates forward at the set speed, the stirring mechanism rotates forward to stir the organic food slurry, and at the same time the extrusion block approaches the stirring mechanism, causing the rotating shaft speed to gradually decrease, and the stirring speed of the stirring mechanism to slow down. At the same time, the moving speed of the extrusion block also slows down until the extrusion block reaches the set position and cannot continue to move toward the stirring mechanism. At this time, the rotating shaft is reversed;

[0020] When the rotating shaft is reversed at the set speed, the stirring mechanism rotates in the opposite direction to stir the organic kitchen slurry, and at the same time the extrusion block moves away from the stirring mechanism, so that the rotating shaft speed gradually increases, the stirring speed of the stirring mechanism becomes faster, and at the same time the moving speed of the extrusion block becomes faster, until the extrusion block reaches the set position and can no longer move away from the stirring mechanism, at which time the rotating shaft rotates forward.

[0021] Furthermore, auxiliary leaves are hinged on both sides of the upper blade of the stirring mechanism, and the auxiliary leaves are connected to the blade by a first spring;

[0022] When the extrusion block moves away from the stirring mechanism and the stirring mechanism speed gradually increases, the centrifugal force during the stirring mechanism rotation is greater than the elastic force of the first spring, driving the auxiliary leaves on the stirring mechanism to open and expand the stirring range of the stirring mechanism;

[0023] When the extrusion block approaches the stirring mechanism and the rotation speed of the stirring mechanism gradually decreases, the centrifugal force during the rotation of the stirring mechanism is less than the elastic force of the first spring. Due to the rebound force of the first spring, the auxiliary blade rotates in the direction of the blade to squeeze the solid in the organic food slurry, thereby squeezing out the solution inside the solid in the organic food slurry.

[0024] Furthermore, the distilled water obtained by distilling the liquid to be treated is used to rinse the organic slurry of kitchen utensils.

[0025] Furthermore, a high-pressure nozzle for spraying distilled water is provided on the inner wall of the treatment box. The stirring mechanism includes at least one set of blades provided on the outer surface of the rotating shaft, so that the rotation of the rotating shaft drives the blades to rotate, thereby stirring the organic slurry of food waste. The extrusion blocks are provided on the outer surface of the rotating shaft, and two extrusion blocks are provided on both sides of the blades respectively.

[0026] External threads with opposite threads are respectively provided on the outer surfaces of both ends of the rotating shaft, a threaded block is fixedly connected to the side of the extrusion block away from the blade, an internal thread matching the external thread is provided inside the threaded block, a limiting rod arranged parallel to the rotating shaft is fixedly connected between the inner walls of the processing box, a limiting groove is provided on the extrusion block, and the limiting rod is arranged inside the limiting groove to limit the extrusion block. The rotation of the rotating shaft drives the blades to rotate to stir the organic slurry of food kitchen, so that the extrusion blocks on both sides move toward the direction of the blades at the same time, squeezing the organic slurry of food kitchen, thereby removing moisture from the organic slurry of food kitchen.

[0027] Furthermore, the extrusion block is rotatably connected to a connecting block on one side close to the blade through a bearing. The connecting block is sleeved on the outer surface of the rotating shaft, so that when the connecting block contacts the blade, the blade drives the connecting block to rotate.

[0028] Furthermore, each set of blades includes a ring sleeve arranged on the outer surface of the rotating shaft and a rotating blade fixedly connected to the outer surface of the ring sleeve. Auxiliary blades are rotatably connected on both sides of the rotating blade away from the rotating shaft. A first spring is fixedly connected between the auxiliary blade and the rotating blade. The auxiliary blade is rotated toward the rotating blade by the elastic force of the first spring to squeeze the organic slurry of food waste.

[0029] Furthermore, at least three groups of blades are provided, and a second spring is fixedly connected between the ring sleeves of two adjacent groups of blades. The expansion and contraction direction of the second spring is arranged along the rotating shaft, and the ring sleeve is slidably connected to the rotating shaft in the moving direction of the extrusion block.

[0030] Furthermore, a plurality of evenly distributed liquid outlet holes are provided on the extrusion block, and filter screens are fixedly connected to opposite sides of the two extrusion blocks. When the two extrusion blocks move relative to each other, distilled water flows out of the liquid outlet holes through the gaps on the filter screens.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present invention mainly dissolves the salt in the solids in the organic food pulp into distilled water to the maximum extent by continuously stirring and squeezing the solids in the organic food pulp, and promptly discharges the salt solution in the organic food pulp by squeezing. The salt in the solids in the organic food pulp is then dissolved again by distilled water. The salt content in the organic food pulp can be brought to the standard by repeatedly circulating the distilled water dissolution and squeezing. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0034] Figure 1 This is a process flow chart of the kitchen organic slurry treatment process provided by the present invention;

[0035] Figure 2 It is a cross-sectional view of the flushing box in the present invention;

[0036] Figure 3 This is a schematic diagram of the structure of the extrusion block in the present invention when extruding the organic slurry of kitchenware;

[0037] Figure 4 A top view of the rotating shaft in the present invention;

[0038] Figure 5 Schematic diagram of the connection structure between the extrusion block and the filter screen in the present invention;

[0039] Figure 6 Schematic diagram of the connection structure between the extrusion block and the limiting rod in the present invention;

[0040] Figure 7 It is a schematic diagram of the connection structure between the rotating blades and the auxiliary blades in the present invention.

[0041] The numbers in the figure represent the following:

[0042] 1-processing box; 2-high-pressure nozzle; 3-stirring mechanism; 4-rotating shaft; 5-blade; 6-extrusion block; 7-threaded block; 8-limiting rod; 9-connecting block; 10-ring sleeve; 11-rotating blade; 12-auxiliary blade; 13-first spring; 14-second spring; 15-liquid outlet; 16-filter screen. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0044] Since the salt content in the food waste organic slurry obtained by pretreatment is relatively high, the solid fertilizer after treatment does not meet the standards. Therefore, reducing the salt content in the food waste organic slurry is the focus and difficulty of current food waste treatment.

[0045] The currently commonly used treatment process ignores the fact that the salt solution will re-penetrate into the solid matter in the organic food pulp. Simple soaking or rinsing can only partially dissolve the salt in the organic food pulp. The dissolved salt solution easily re-penetrates into the solid matter in the organic food pulp and is difficult to discharge. As a result, the dehydrated solids still contain a large amount of salt and fail to meet the standards.

[0046] Therefore, it is meaningful to propose a low-cost and rapid method to remove the salt content in organic food pulp. Therefore, it is necessary to develop a process that can reduce the salt content in organic food pulp at a low cost.

[0047] like Figure 1 As shown, the present invention provides a process for treating organic food pulp, which mainly removes the salt by dissolving the salt in the organic food pulp with distilled water and then cooling and crystallizing it.

[0048] The process for treating organic food slurry includes the following steps:

[0049] A processing box 1 is provided, and a horizontally arranged rotating shaft 4 is provided in the processing box 1. A stirring mechanism 3 and two extrusion blocks 6 arranged on both sides of the stirring mechanism 3 and coaxially with the rotating shaft 4 are provided on the rotating shaft 4.

[0050] Injecting the organic food slurry from the top of the treatment box 1 so that the organic food slurry occupies two-thirds of the space in the treatment box 1;

[0051] Distilled water is sprayed from the inner wall of the treatment box 1 to rinse the organic food slurry. During the rinsing process, the stirring mechanism 3 is continuously rotated in a forward and reverse direction to stir the organic food slurry, so that the salt in the organic food slurry is fully dissolved in the distilled water.

[0052] The two squeezing blocks 6 are intermittently moved toward the middle of the treatment box 1 to squeeze the food waste organic slurry to initially filter out the liquid inside the treatment box 1. The resulting flushing liquid is discharged from the drain pipes on both sides of the treatment box 1, and the remaining solid-liquid mixture is discharged from the middle of the bottom of the treatment box 1.

[0053] The flushing liquid is filtered twice to obtain filtered liquid and filtered solid, and the filtered solid and solid-liquid mixture are placed in a dehydrator for extrusion and dehydration to obtain extruded solid and extruded liquid;

[0054] mixing the filtered liquid and the squeezed liquid to obtain a liquid to be treated;

[0055] Distill the liquid to be treated to obtain distilled water and concentrated liquid.

[0056] The concentrated liquid is cooled and crystallized, and the crystals are filtered out to obtain an oil-water mixture.

[0057] The present invention mainly dissolves the salt in the solids in the organic food material slurry into distilled water to the maximum extent by continuously stirring and squeezing the solids in the organic food material slurry. The salt solution in the organic food material slurry is promptly discharged by squeezing, and the salt in the solids in the organic food material slurry is redissolved by distilled water. The salt content in the organic food material slurry can be brought to the standard by repeatedly circulating the distilled water dissolution and squeezing, with low cost and high efficiency.

[0058] To fully dissolve the salt in the organic food slurry, the slurry is continuously stirred and squeezed during the distilled water rinse process. This allows the salt in the slurry to fully dissolve in the distilled water. By continuously stirring the slurry and squeezing out the water that has dissolved the salt, the salt in the organic food slurry can be removed to the maximum extent possible.

[0059] In order to improve the mixing and extrusion efficiency of the organic slurry of food waste, the processing box 1 is further configured as a horizontally placed cylindrical box body so that the outer surface of the extrusion block 6 matches the inner wall of the processing box 1;

[0060] The stirring mechanisms 3 are arranged in multiple groups. The rotation of the rotating shaft 4 drives the stirring mechanisms 3 to rotate and simultaneously drives the extrusion block 6 to move toward the middle of the processing box 1. At the same time, due to the extrusion force of the extrusion block 6, the multiple groups of stirring mechanisms 3 also move toward the middle of the processing box 1. This can expand the extrusion space and improve the extrusion efficiency.

[0061] In order to enable stirring and extruding the slurry to be carried out simultaneously and to improve efficiency, the rotation speed of the rotating shaft 4 changes periodically as the position of the extrusion block 6 changes;

[0062] When the rotating shaft 4 rotates forward at the set speed, the stirring mechanism 3 rotates forward to stir the organic food slurry, and at the same time, the extruding block 6 approaches the stirring mechanism 3, causing the rotating shaft 4 to gradually decrease in speed. Then, the stirring speed of the stirring mechanism 3 slows down, and the moving speed of the extruding block 6 slows down, until the extruding block 6 reaches the set position and cannot continue to move toward the stirring mechanism 3. At this time, the rotating shaft 4 is reversed;

[0063] When the rotating shaft 4 is reversed at the set speed, the stirring mechanism 3 rotates in the opposite direction to stir the organic kitchen slurry, and at the same time the extrusion block 6 moves away from the stirring mechanism 3, so that the rotation speed of the rotating shaft 4 gradually increases, the stirring speed of the stirring mechanism 3 becomes faster, and at the same time the moving speed of the extrusion block 6 becomes faster, until the extrusion block 6 reaches the set position and can no longer move away from the stirring mechanism 3, at which time the rotating shaft 4 rotates forward.

[0064] By periodically varying the rotational speed of the rotating shaft 4 as the position of the extrusion block 6 changes, it is possible to achieve proper coordination between the stirring mechanism 3 stirring the organic kitchen slurry and the extrusion block 6 extruding the organic kitchen slurry. As the extrusion block 6 gradually extrudes the organic kitchen slurry, the resistance to the rotation of the stirring mechanism 3 gradually increases as the moisture content of the organic kitchen slurry decreases. This resistance also increases with the extrusion of the extrusion block 6. Therefore, it is necessary to reduce the rotational speed. At the same time, the moving speed of the extrusion block 6 can also be reduced to slowly extrude the moisture from the organic kitchen slurry.

[0065] Auxiliary leaves 12 are hinged on both sides of the blade 5 of the stirring mechanism 3, and the auxiliary leaves 12 are connected to the blade 5 by a first spring 13;

[0066] When the extrusion block 6 moves away from the stirring mechanism 3 and the rotation speed of the stirring mechanism 3 gradually increases, the centrifugal force of the stirring mechanism 3 during rotation is greater than the elastic force of the first spring 13, which drives the auxiliary leaves 12 on the stirring mechanism 3 to open and expand the stirring range of the stirring mechanism 3;

[0067] When the squeezing block 6 approaches the stirring mechanism 3 and the rotation speed of the stirring mechanism 3 gradually decreases, the centrifugal force during the rotation of the stirring mechanism 3 is less than the elastic force of the first spring 13. Due to the rebound force of the first spring 13, the auxiliary blade 12 rotates toward the blade 5, squeezing the solids in the organic food slurry, thereby squeezing out the solution inside the solids in the organic food slurry.

[0068] The auxiliary blades 12 can not only improve the stirring efficiency, but also squeeze the organic slurry of the kitchenware to improve the desalination effect.

[0069] To increase the solubility of salt in the food waste slurry and quickly remove it, higher-temperature distilled water is used as the flushing water to increase the solubility of the salt in the water. To conserve resources, the distilled water obtained from the treated liquid is used to flush the food waste slurry. This allows the high-temperature distilled water to be recycled, eliminating the need for additional distilled water. The higher-temperature distilled water used for flushing also keeps the post-rinsing solution temperature higher, facilitating subsequent evaporation and crystallization. This reduces energy consumption throughout the entire process while also increasing the solubility of the salt in the water.

[0070] The resulting extruded solids and oil-water mixture are further processed to reuse resources. Specifically, the extruded solids obtained by dehydration are placed in a fermentation chamber for fermentation to produce gaseous fuel and solid fertilizer. The oil-water mixture is placed in an oil-water separator to separate and produce industrial grease. Through fermentation and oil-water separation, the processed product of the kitchen organic slurry is reused, conserving resources.

[0071] The most important thing in this application is to fully dissolve the salt in the organic slurry of kitchen utensils in distilled water. Specifically, Figure 2 As shown, a high-pressure nozzle 2 for spraying distilled water is provided on the inner wall of the treatment box 1. The stirring mechanism 3 includes at least one set of blades 5 provided on the outer surface of a rotating shaft 4. The rotation of the rotating shaft 4 drives the blades 5 to rotate, thereby stirring the organic food slurry. Extrusion blocks 6 are provided on the outer surface of the rotating shaft 4, with two extrusion blocks 6 being provided on either side of the blades 5.

[0072] External threads with opposite threads are respectively provided on the outer surfaces of both ends of the rotating shaft 4. A threaded block 7 is fixedly connected to the side of the extrusion block 6 away from the blade 5. An internal thread matching the external thread is provided inside the threaded block 7. A limiting rod 8 arranged parallel to the rotating shaft 4 is fixedly connected between the inner walls of the processing box 1. A limiting groove is provided on the extrusion block 6. The limiting rod 8 is arranged inside the limiting groove to limit the extrusion block 6. The rotation of the rotating shaft 4 drives the blade 5 to rotate to stir the organic food slurry, so that the extrusion blocks 6 on both sides move toward the blade 5 at the same time, squeezing the organic food slurry, thereby removing moisture from the organic food slurry.

[0073] When using,

[0074] 1. The organic slurry from restaurant kitchen is intermittently poured into the treatment box 1, and the discharge port at the bottom of the treatment box 1 is intermittently opened to discharge the rinsed organic slurry from the restaurant kitchen. The high-pressure nozzle 2 intermittently sprays high-temperature and high-pressure distilled water into the treatment box 1;

[0075] 2. Stirring: After the organic food slurry is poured into the treatment tank 1, distilled water is sprayed out through the high-pressure nozzle 2. The rotation of the external motor drives the rotating shaft 4, which in turn drives the blades 5 to rotate. The blades 5 stir the organic food slurry inside the treatment tank 1, dissolving the salt in the organic food slurry into the distilled water;

[0076] 3. Extrusion dehydration, such as Figure 3 As shown, the rotating shaft 4 rotates, driving the extrusion blocks 6 on both sides to move relative to each other. The extrusion blocks 6 on both sides squeeze out the water in the solid of the organic food slurry, and discharge the salt along with the water. The rotating shaft 4 is reversed by an external motor, and the extrusion blocks 6 on both sides move in opposite directions.

[0077] 4. Repeat the stirring and extrusion dehydration steps multiple times, continuously rotating the rotating shaft 4 forward and reversely. The blades 5 stir the organic food slurry while the extrusion blocks 6 on both sides continuously move relative to and away from each other, continuously squeezing out the liquid in the organic food slurry and allowing it to flow out of the drain pipes on both sides of the processing box 1. Most of the salt in the organic food slurry is dissolved in the distilled water and extruded along with the water.

[0078] 5. Discharge the material, and discharge the washed and squeezed dehydrated kitchen organic slurry.

[0079] When the extrusion blocks 6 on both sides contact the blades 5, the rotation of the rotating shaft 4 will be restricted due to the friction force, and the extrusion blocks 6 will not continue to move. In order to solve this problem, specifically, Figure 4 As shown, the extrusion block 6 is rotatably connected to a connecting block 9 on the side close to the blade 5 through a bearing. The connecting block 9 is sleeved on the outer surface of the rotating shaft 4, so that when the connecting block 9 contacts the blade 5, the blade 5 drives the connecting block 9 to rotate. By providing the connecting block 9, the rotation of the blade 5 will not interfere with the movement of the extrusion block 6.

[0080] The rotation speed of the rotating shaft 4 changes periodically with the position of the extrusion block 6. When the extrusion block 6 is close to the blade 5, the rotation speed of the rotating shaft 4 gradually decreases; when the extrusion block 6 is far away from the blade 5, the rotation speed of the rotating shaft 4 gradually increases.

[0081] In order to improve the stirring ability of the blades 5 and further improve the extrusion dehydration effect, each group of blades 5 further includes a ring sleeve 10 arranged on the outer surface of the rotating shaft 4 and a rotating blade 11 fixedly connected to the outer surface of the ring sleeve 10. Auxiliary blades 12 are rotatably connected on both sides of the end of the rotating blade 11 away from the rotating shaft 4. A first spring 13 is fixedly connected between the auxiliary blade 12 and the rotating blade 11. The elastic force of the first spring 13 causes the auxiliary blade 12 to rotate toward the rotating blade 11 to extrude the organic slurry of the kitchen kitchen.

[0082] In the initial state, the first spring 13 is in a contracted state due to the elastic force of the first spring 13. As the rotating shaft 4 rotates and the speed of the rotating shaft 4 increases, the auxiliary leaves 12 are expanded due to the centrifugal force, causing the first spring 13 to be in a stretched state. The expanded auxiliary leaves 12 stir the organic food slurry as the rotating shaft 4 rotates, thereby improving the stirring effect. When the speed of the rotating shaft 4 decreases, the auxiliary leaves 12 lose the centrifugal force. The rebound force of the first spring 13 causes the auxiliary leaves 12 to rotate toward the rotating leaves 11 and return to their original state. At the same time, the organic food slurry between the rotating leaves 11 and the auxiliary leaves 12 is squeezed and dehydrated by the rotating leaves 11 and the auxiliary leaves 12. Therefore, the device can squeeze and dehydrate the organic food slurry through the rotating leaves 11 and the auxiliary leaves 12 simultaneously with the squeezing block 6, thereby improving the dehydration efficiency.

[0083] In order to improve the stirring effect of the blades 5, at least three groups of blades 5 are provided, and a second spring 14 is fixedly connected between the ring sleeves 10 of two adjacent groups of blades 5. The extension and contraction direction of the second spring 14 is arranged along the rotating shaft 4, and the ring sleeve 10 is slidably connected to the rotating shaft 4 in the moving direction of the extrusion block 6.

[0084] When the squeezing block 6 moves toward the blade 5 , the second spring 14 is compressed, and the blade 5 moves toward the center of the processing box 1 , so that the moving distance of the squeezing block 6 becomes larger, thereby improving the squeezing effect.

[0085] The extrusion block 6 is provided with multiple evenly distributed liquid outlets 15. Filters 16 are fixedly connected to opposing sides of the two extrusion blocks 6. When the two extrusion blocks 6 move relative to each other, distilled water flows out of the liquid outlets 15 through the gaps in the filters 16. When the extrusion blocks 6 squeeze the organic food slurry, distilled water flows out of the liquid outlets 15 through the gaps in the filters 16, leaving the solids in the organic food slurry trapped between the two filters 16.

[0086] The above embodiments are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. A process for treating organic kitchen slurry, characterized in that: The following steps are involved: A processing box is provided, and a horizontally arranged rotating shaft is provided in the processing box, a stirring mechanism and two extrusion blocks arranged on both sides of the stirring mechanism and coaxially arranged with the rotating shaft are provided on the rotating shaft; Inject the organic food slurry from the top of the treatment box so that the organic food slurry occupies two-thirds of the space in the treatment box; Distilled water is sprayed from the inner wall of the treatment box to flush the organic food slurry, and during the flushing process, the stirring mechanism is continuously rotated in a forward and reverse direction to stir the organic food slurry, so that the salt in the organic food slurry is fully dissolved in the distilled water; The two squeezing blocks are intermittently moved toward the middle of the treatment box to squeeze the food waste organic slurry to initially filter out the liquid inside the treatment box. The resulting flushing liquid is discharged from the drainage pipes on both sides of the treatment box, and the remaining solid-liquid mixture is discharged from the middle of the bottom of the treatment box. The flushing liquid is filtered twice to obtain filtered liquid and filtered solid, and the filtered solid and solid-liquid mixture are placed in a dehydrator for extrusion and dehydration to obtain extruded solid and extruded liquid; mixing the filtered liquid and the squeezed liquid to obtain a liquid to be treated; Distill the liquid to be treated to obtain distilled water and concentrated liquid; Cooling the concentrated liquid for crystallization, and filtering out the crystals to obtain an oil-water mixture; The processing box is configured as a horizontally placed cylindrical box so that the outer surface of the extrusion block matches the inner wall of the processing box; The number of stirring mechanisms is set to multiple groups, and the rotation of the rotating shaft drives the stirring mechanism to rotate and drives the extrusion block to move toward the middle of the processing box. At the same time, due to the extrusion force of the extrusion block, the multiple stirring mechanisms also move toward the middle of the processing box; The rotation speed of the rotating shaft changes periodically with the position of the extrusion block; When the rotating shaft rotates forward at the set speed, the stirring mechanism rotates forward to stir the organic food slurry, and at the same time the extrusion block approaches the stirring mechanism, causing the rotating shaft speed to gradually decrease, and the stirring speed of the stirring mechanism to slow down. At the same time, the moving speed of the extrusion block also slows down until the extrusion block reaches the set position and cannot continue to move toward the stirring mechanism. At this time, the rotating shaft is reversed; When the rotating shaft rotates in reverse according to the set speed, the stirring mechanism rotates in the opposite direction to stir the organic food slurry, and at the same time the extrusion block moves away from the stirring mechanism, so that the rotating shaft speed gradually increases, the stirring speed of the stirring mechanism becomes faster, and at the same time the moving speed of the extrusion block becomes faster, until the extrusion block reaches the set position and cannot continue to move away from the stirring mechanism, at which time the rotating shaft rotates forward; Auxiliary leaves are hinged on both sides of the upper blade of the stirring mechanism, and the auxiliary leaves are connected to the blade by a first spring; When the extrusion block moves away from the stirring mechanism and the stirring mechanism speed gradually increases, the centrifugal force during the stirring mechanism rotation is greater than the elastic force of the first spring, driving the auxiliary leaves on the stirring mechanism to open and expand the stirring range of the stirring mechanism; When the extrusion block approaches the stirring mechanism and the rotation speed of the stirring mechanism gradually decreases, the centrifugal force during the rotation of the stirring mechanism is less than the elastic force of the first spring. Due to the rebound force of the first spring, the auxiliary blade rotates in the direction of the blade to squeeze the solid in the organic food slurry, thereby squeezing out the solution inside the solid in the organic food slurry.

2. A process for treating organic kitchen slurry according to claim 1, characterized in that: The distilled water obtained from the distillation of the liquid to be treated is used to rinse the organic slurry of food waste.

3. A process for treating kitchen organic slurry according to any one of claims 1-2, characterized in that: A high-pressure nozzle for spraying distilled water is provided on the inner wall of the treatment box. The stirring mechanism includes at least one set of blades provided on the outer surface of a rotating shaft, so that the rotation of the rotating shaft drives the blades to rotate, thereby stirring the organic slurry of food waste. Extrusion blocks are provided on the outer surface of the rotating shaft, and two extrusion blocks are provided on both sides of the blades. External threads with opposite threads are respectively provided on the outer surfaces of both ends of the rotating shaft, a threaded block is fixedly connected to the side of the extrusion block away from the blade, an internal thread matching the external thread is provided inside the threaded block, a limiting rod arranged parallel to the rotating shaft is fixedly connected between the inner walls of the processing box, a limiting groove is provided on the extrusion block, and the limiting rod is arranged inside the limiting groove to limit the extrusion block. The rotation of the rotating shaft drives the blades to rotate to stir the organic slurry of food kitchen, so that the extrusion blocks on both sides move toward the direction of the blades at the same time, squeezing the organic slurry of food kitchen, thereby removing moisture from the organic slurry of food kitchen.

4. A process for treating organic kitchen slurry according to claim 3, characterized in that: The extrusion block is rotatably connected to a connecting block on one side close to the blade through a bearing. The connecting block is sleeved on the outer surface of the rotating shaft so that when the connecting block contacts the blade, the blade drives the connecting block to rotate.

5. A process for treating organic food slurry according to claim 4, characterized in that: Each set of blades includes a ring sleeve arranged on the outer surface of the rotating shaft and a rotating leaf fixedly connected to the outer surface of the ring sleeve. Auxiliary leaves are rotatably connected on both sides of the rotating leaf away from the rotating shaft. A first spring is fixedly connected between the auxiliary leaf and the rotating leaf. The elastic force of the first spring causes the auxiliary leaf to rotate toward the rotating leaf to squeeze the organic slurry of food waste.

6. A process for treating organic food slurry according to claim 5, characterized in that: There are at least three groups of blades. A second spring is fixedly connected between the ring sleeves of two adjacent groups of blades. The expansion and contraction direction of the second spring is arranged along the rotating shaft. The ring sleeve is slidably connected to the rotating shaft in the moving direction of the extrusion block.

7. A process for treating organic kitchen slurry according to claim 6, characterized in that: The extrusion block is provided with a plurality of evenly distributed liquid outlet holes. The two extrusion blocks are fixedly connected to the opposite side with filter screens. When the two extrusion blocks move relative to each other, the distilled water flows out of the liquid outlet holes through the gaps on the filter screens.

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