CN114886074B - Sterilization systems for food processing - Google Patents

Abstract

The invention relates to a sterilization system for food processing, which comprises a heating chamber and a heat preservation chamber; the heat preservation chamber is arranged around the heating chamber in a surrounding way; a rotary groove, a material frame and a lifting mechanism are arranged in the heating chamber; the rotary groove is rotatably arranged in the heating chamber; opposite sides of the material frame are respectively connected with the edge of the rotary groove and the lifting mechanism; a partition board is arranged in the heat preservation chamber; the plurality of partition boards are distributed in a circumferential direction and divide the interior of the heat preservation chamber into a plurality of unit cavities; the rotating rotary groove drives the overturning and dumping directions of the material frame to be switched between different unit cavities; the heating chamber is used for heating the product to be treated which is placed in the heating chamber to the process temperature, the heated product to be treated can be stored in different areas in the heating chamber, and the temperature difference can exist between different unit cavities, so that the water bath pasteurization process under a plurality of temperatures is simultaneously carried out in the same sterilization system according to the different product packaging volumes and the different internal food types.

Description

Sterilization systems for food processing

Technical Field

The present invention relates to the technical field of food sterilization, in particular to a sterilization system used for food processing.

Background technique

In food production and processing, products need to be sterilized. In order to fully preserve the flavor and nutrients of the ingredients, pasteurization technology is usually used for products such as milk and pickles. For sealed packaging products such as bagged products, water bath pasteurization has better heat conduction efficiency than air heating, and its production efficiency can be greatly improved. However, the process temperature of pasteurization can be flexibly adjusted between 60°C and 90°C depending on the specific type of product. Therefore, the traditional single-sink single-water warm water water bath pasteurization equipment can no longer meet the conversion requirements of multi-category production lines. Each product line is equipped with a water bath pasteurization equipment. Although it can ensure the overall production efficiency, the equipment cost will be greatly increased.

Summary of the invention

The present invention aims at the technical problems existing in the prior art and provides a sterilization system for food processing which can simultaneously carry out water bath pasteurization processes at multiple temperatures and recycle hot water to achieve energy saving and emission reduction.

The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a sterilization system for food processing, comprising a heating chamber and a holding chamber; the holding chamber is arranged around the heating chamber; a rotary groove, a material frame and a lifting mechanism are arranged inside the heating chamber; the rotary groove is rotatably arranged inside the heating chamber; the opposite sides of the material frame are respectively connected to the edge of the rotary groove and the lifting mechanism; the middle section of the material frame is recessed and sunken into the interior of the rotary groove; the lifting mechanism drives the material frame to flip around the edge connection of the rotary groove; a partition is arranged inside the holding chamber; a plurality of the partitions are distributed circumferentially to divide the interior of the holding chamber into a plurality of unit cavities; the rotating rotary groove drives the flipping and dumping direction of the material frame to switch between different unit cavities.

Preferably, the above-mentioned sterilization system for food processing, wherein the top of the unit cavity is open; a feed guide plate and a stirring rod are arranged inside the unit cavity; the feed guide plate is inclined at the opening of the unit cavity; the plate surface height of the feed guide plate gradually decreases in the direction away from the heating chamber; the top of the feed guide plate is provided with a plurality of slide grooves parallel to and spaced apart along its own length direction; a gap is left between the lower end of the feed guide plate and the inner wall of the unit cavity; the stirring rod is arranged below the feed guide plate; a lifting rod is vertically embedded on the feed guide plate; the stirring rod is connected to the lifting rod; the stirring rod moves in the unit cavity synchronously with the lifting and lowering of the lifting rod; a plurality of the stirring rods are spaced apart along the height direction; and different stirring rods are staggered from each other in the vertical direction.

Preferably, in the above-mentioned sterilization system for food processing, a discharge window is provided on the outer side of the unit cavity; a lining plate is provided at the bottom interval pad of the unit cavity; the upper surface height of the lining plate gradually decreases in the direction approaching the discharge window; the lower edge of the discharge window is flush with the upper surface of the lining plate; a conveyor belt is arranged around the periphery of the insulation chamber; the conveyor belt is connected below the discharge path of the discharge window; a recovery trough is arranged below the conveyor belt; the recovery trough transports the liquid heating medium back to the rotary trough and the inside of the unit cavity through the filtering and heating component.

Preferably, the above-mentioned sterilization system for food processing, wherein the filtering and heating component includes a filter cavity and a transfer cavity connected in sequence; the inlet end of the filter cavity is connected to a first delivery pipe; the end of the first delivery pipe extending into the recovery tank is provided with a first pump; the transfer cavity is provided with a second pump; the outlet end of the second pump is connected to a second delivery pipe; the second delivery pipe is arranged in a surrounding manner between the top of the heating chamber and the insulation chamber; the side of the second delivery pipe facing the rotary tank is provided with a first water outlet valve; the side of the second delivery pipe facing the insulation chamber is provided with a second water outlet valve; the second water outlet valve is arranged one-to-one with the unit cavity.

Preferably, the above-mentioned sterilization system for food processing also includes an independent heating component; the independent heating component includes a stirring head and a steam nozzle; the stirring head is rotatably connected to the bottom of the unit cavity; the stirring head is located below the lining plate; the steam nozzle is distributed on the partition; a steam pipeline connected to the steam nozzle is arranged inside the partition; a temperature sensor is also arranged on the inner wall of the unit cavity; a plurality of the temperature sensors are distributed circumferentially at intervals.

Preferably, the above-mentioned sterilization system for food processing, wherein the steam nozzle includes a pipe and a sleeve; the sleeve is rotatably mounted on the pipe; an air window is provided on the side of the pipe; the middle area of the sleeve bulges outward to form a buffer cavity inside; an air outlet is provided on the buffer cavity; an air guide tube is connected to the air outlet; the air guide tube is distributed tangentially along the rotation path of the outer surface contour of the buffer cavity; when the air window corresponds to the position of the buffer cavity, the air outlet sprays air flow to drive the buffer cavity to rotate.

Preferably, in the above-mentioned sterilization system for food processing, two air outlets are symmetrically arranged on the sleeve; and the air guide tubes on different air outlets are uniformly arranged in a clockwise or counterclockwise pushing direction.

Preferably, in the above-mentioned sterilization system for food processing, a baffle is provided at the end of the pipe; the baffle includes a fixed part and a movable part which are rotatably connected; the movable part is sealed and embedded in the end of the sleeve; the fixed part is connected and arranged between the pipe and the movable part; the fixed part is fixedly connected to the pipe; an air vent is opened on the side of the connection between the pipe and the fixed part; the sleeve damps and slides to adjust the position outside the pipe; when the buffer cavity corresponds to the position of the air window, the movable part is embedded and blocks the end of the sleeve; when the sleeve slides along the length direction of the pipe and approaches the partition, the movable part detaches from the sleeve, and the air vent is connected to the outside.

Preferably, in the above-mentioned sterilization system for food processing, the cross-section of the fixing member gradually decreases in a direction away from the fixing member.

The beneficial effects of the present invention are as follows: (1) A sterilization system for food processing comprises a heating chamber and a heat preservation chamber; the heat preservation chamber is arranged around the heating chamber; a rotary trough, a material frame and a lifting mechanism are arranged inside the heating chamber; the rotary trough is rotatably arranged inside the heating chamber; the opposite sides of the material frame are respectively connected to the edge of the rotary trough and the lifting mechanism; a partition is arranged inside the heat preservation chamber; a plurality of partitions are distributed circumferentially to divide the interior of the heat preservation chamber into a plurality of unit cavities; the rotating rotary trough drives the flipping and dumping direction of the material frame to switch between different unit cavities; the heating chamber is used to heat the product to be processed placed therein to the process temperature, while the heat preservation chamber can store the heated product to be processed in different areas, and there can be a temperature difference between different unit cavities, and then according to the different product packaging volumes and the types of food inside, a water bath pasteurization process at multiple temperatures can be carried out simultaneously inside the same sterilization system; (2) A sterilization system for food processing A system, a conveyor belt is arranged around the outer periphery of the insulation chamber; a recovery tank is arranged below the conveyor belt; the recovery tank transports the liquid heating medium back to the rotary tank and the unit cavity through the filtering and heating component; thereby, the refluxed hot water is close to the process requirements, and only a brief fine adjustment of the water temperature in the unit cavity is required before it can be put into use, which greatly improves the circulation efficiency of the sterilization system; (3) A sterilization system for food processing, a steam nozzle is arranged on the partition, and a temperature sensor is also arranged on the inner wall of the unit cavity; the steam nozzle includes a pipe and a sleeve; the sleeve is rotatably mounted on the pipe; an air window is opened on the side of the pipe; the middle section of the sleeve bulges outward to form a buffer cavity inside; an air outlet is opened on the buffer cavity; an air duct is connected to the air outlet; the air duct is tangentially distributed along the rotating path of the outer surface contour of the buffer cavity; the change of direction effect of the air duct is utilized to avoid the overall direct impact on the product packaging, avoid local overheating, and improve the stability of the disinfection treatment.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a top view of a sterilization system of the present invention;

FIG2 is a schematic diagram of the overall structure of the sterilization system of the present invention;

FIG3 is a schematic diagram of the internal structure of a unit cavity of the present invention;

FIG4 is a schematic diagram of the structure of the filter and heating assembly of the present invention;

FIG5 is a schematic diagram of the position of an independent heating component of the present invention;

FIG6 is a schematic diagram of the structure of the steam nozzle of the present invention;

FIG7 is a schematic diagram of the air outlet state of the air guide tube of the present invention;

FIG. 8 is a schematic diagram of the gas outlet state of the gas vent of the present invention.

In the accompanying drawings, the components represented by the reference numerals are listed as follows:

1. Heating chamber, 11. Rotating trough, 12. Material frame, 13. Lifting mechanism, 2. Insulating chamber, 21. Partition, 22. Unit cavity, 23. Independent heating component, 231. Stirring head, 232. Steam nozzle, 233. Temperature sensor, 241. Leading plate, 242. Stirring rod, 243. Slide, 244. Lifting rod, 25. Discharge window, 26. Conveyor belt, 261. Side guide plate, 262. Discharge plate, 27. Recovery trough, 2 9. Lining plate, 200. Air vent, 201. Pipe, 202. Sleeve, 203. Air window, 204. Buffer chamber, 205. Air outlet, 206. Air guide pipe, 207. Flow blocking plug, 208. Fixing part, 209. Movable part, 3. Filter and heating assembly, 31. Filter cavity, 32. Transfer cavity, 301. First delivery pipe, 302. First pump, 303. Second delivery pipe, 304. First water outlet valve, 305. Second water outlet valve.

Detailed ways

The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

As shown in Fig. 1-3, a sterilization system for food processing comprises a heating chamber 1 and a heat preservation chamber 2; the heat preservation chamber 2 is arranged around the heating chamber 1; a rotary groove 11, a material frame 12 and a lifting mechanism 13 are arranged inside the heating chamber 1; the rotary groove 11 is rotatably arranged inside the heating chamber 1; the opposite sides of the material frame 12 are respectively connected to the edge of the rotary groove 11 and the lifting mechanism 13; the middle section of the material frame 12 is recessed and sunken into the inside of the rotary groove 11; the lifting mechanism 13 drives the material frame 12 to flip around the edge connection of the rotary groove 11; a partition 21 is arranged inside the heat preservation chamber 2; a plurality of the partitions 21 are distributed circumferentially to divide the inside of the heat preservation chamber 2 into a plurality of unit cavities 22; the rotating rotary groove 11 drives the flipping and dumping direction of the material frame 12 to switch between different unit cavities 22.

The function of the heating chamber 1 is to heat the product to be processed to the process temperature, while the insulation chamber 2 can store the heated product to be processed in different areas, so that there can be a temperature difference between different unit cavities 22 in the insulation chamber 2, and then the water bath pasteurization process at multiple temperatures can be carried out inside the same sterilization system. According to the product packaging volume and the type of food inside, the temperature of each unit cavity 22 can be adjusted between 60°C and 90°C. Specifically, according to production experience, the bagged milk product can be kept at 62°C-65°C for 30 minutes for sterilization, while for bagged pickles, it can be kept at about 85°C for 5 minutes for sterilization. The heating chamber 1 contains liquid media such as hot water through the rotary trough 11, and the material frame 12 is hollowed out, which can act as a salvage component. After heating is completed, the product is dumped into the corresponding unit cavity 22 by turning itself over; the lifting mechanism 13 is shown in the figure, and the material frame 12 is driven to turn over by the retractable pull rope.

As shown in Fig. 2-3, the top of the unit cavity 22 is open; a guide plate 241 and a stirring rod 242 are arranged inside the unit cavity 22; the guide plate 241 is tilted at the opening of the unit cavity 22; the height of the plate surface of the guide plate 241 gradually decreases in the direction away from the heating chamber 1; a plurality of slide grooves 243 are arranged at intervals in parallel along the length direction of the top of the guide plate 241; a gap is left between the lower end of the guide plate 241 and the inner wall of the unit cavity 22; the stirring rod 242 is arranged below the guide plate 241; a lifting rod 244 is vertically inserted on the guide plate 241; the stirring rod 242 is connected to the lifting rod 244; the stirring rod 242 moves in the unit cavity 22 synchronously with the lifting and lowering of the lifting rod 244; a plurality of the stirring rods 242 are spaced apart along the height direction; different stirring rods 242 are staggered from each other in the vertical direction.

The guide plate 241 can use its own inclined slope to guide the products poured out from the material frame 12, so that they fall smoothly into the hot water stored in the unit cavity 22; the function of the slide 243 is to prevent the products from gathering to one side and affecting the unloading efficiency, and to improve the uniformity of the distribution of the products on the surface of the guide plate 241; the lifting rod 244 is matched with the stirring rod 242, which can stir the products and the stored water to a certain extent during the lifting and lowering activities, thereby improving the temperature uniformity in the entire unit cavity 22; the stirring rod 242 is distributed in all directions along the lifting rod 244 like a tree branch plate, so as to take into account the space of the entire unit cavity 22.

A discharge window 25 is provided on the outer side of the unit cavity 22; a lining plate 29 is provided as a spacer at the bottom of the unit cavity 22; the height of the upper surface of the lining plate 29 gradually decreases in the direction approaching the discharge window 25; the lower edge of the discharge window 25 is flush with the upper surface of the lining plate 29; a conveyor belt 26 is arranged around the periphery of the insulation chamber 2; the conveyor belt 26 is connected and arranged below the discharge path of the discharge window 25; a recovery trough 27 is arranged below the conveyor belt 26; the recovery trough 27 transports the liquid heating medium back to the rotary trough 11 and the unit cavity 22 through the filtering and heating component 3.

The function of the discharge window 25 is that when the insulation time is up, the product can be released from there; a sealed door is hingedly provided on the discharge window 25; and the lining plate 29 can use its own inclination to guide the lower layer of products to leave the unit cavity 22 under the action of water flow and gravity component force, thereby improving the efficiency of product transfer; the products leaving the unit cavity 22 will fall onto the conveyor belt 26, and the remaining hot water will fall into the recovery tank; raised anti-roll bars can be provided on both sides of the conveyor belt 26 to prevent the products from sliding off the conveyor belt 26 under the inertia of falling and centrifugal force; water leakage gaps can be provided at intervals on the anti-roll bars to avoid water accumulation on the belt; the products on the conveyor belt 26 will encounter the side guide plate 261 after transportation, and thus transfer to the discharge plate 262 along the side guide plate 261, and finally leave the sterilization system to complete the entire sterilization process; and the warm water in the recovery tank 27 can be purified again with the help of the filtering and heating component 3 and then reheated and replenished to the heating chamber 1 and the insulation chamber 2, thereby reducing heat loss and being beneficial to energy conservation and emission reduction.

As shown in Figure 4, the filtering and heating component 3 includes a filter cavity 31 and a transfer cavity 32 connected in sequence; the inlet end of the filter cavity 31 is connected to a first delivery pipe 301; the end of the first delivery pipe 301 extending into the recovery tank 27 is provided with a first pump 302; a second pump is provided inside the transfer cavity 32; the outlet end of the second pump is connected to a second delivery pipe 303; the second delivery pipe 303 is arranged around the top of the heating chamber 1 and the insulation chamber 2; the second delivery pipe 303 is provided with a first water outlet valve 304 on the side facing the rotary tank 11; the second delivery pipe 303 is provided with a second water outlet valve 305 on the side facing the insulation chamber 2; the second water outlet valve 305 is arranged one-to-one with the unit cavity 22.

Multiple filters are embedded in the filter cavity 31 to intercept solid impurities in the recovered warm water. The embedded filters can be quickly plugged in and replaced, which is convenient for maintenance of the filter cavity 31; a heating rod is provided in the transfer cavity 32 to heat the warm water when it flows through, so that the refluxed hot water is close to the process requirements. Subsequently, only a brief fine-tuning of the water temperature in the unit cavity 22 is required before it can be put into use, which greatly improves the circulation efficiency of the sterilization system; when it is necessary to replenish water in the heating chamber 1, the second water outlet valve 305 is closed and the first water outlet valve 304 is opened; when it is necessary to replenish water in the insulation chamber 2, the second water outlet valve 305 corresponding to the unit cavity 22 is opened and the first water outlet valve 304 is closed; only two second water outlet valves 305 are drawn in the figure for illustration, and their distribution density depends on the distribution number of the unit cavities 22.

The sterilization system also includes an independent heating component 23; the independent heating component 23 includes a stirring head 231 and a steam nozzle 232; the stirring head 231 is rotatably connected to the bottom of the unit cavity 22; the stirring head 231 is located below the lining plate 29; the steam nozzle 232 is distributed on the partition 21; a steam pipeline connected to the steam nozzle 232 is arranged inside the partition 21; a temperature sensor 233 is also arranged on the inner wall of the unit cavity 22; a plurality of the temperature sensors 233 are distributed circumferentially at intervals.

The independent heating component 23 is used to perform secondary temperature adjustment after the unit cavity 22 obtains the newly injected hot water from the filtering and heating component 3; when working, the clamp head 231 rotates, and the upward water flow generated passes through the lining plate 29 to mix the stored water in the unit cavity 22, thereby promoting temperature uniformity; the steam nozzle 232 uses a steam pipeline to introduce the steam produced by the boiler equipment on other production lines into the unit cavity 22 to heat the stored water; the temperature sensor 233 is arranged on the partition 21 and the inner wall of the unit cavity 22 to form a circle of measurement combination, which can realize multi-point measurement to realize accurate monitoring of the temperature and avoid local overheating and damage to the product.

As shown in Figure 6, the steam nozzle 232 includes a pipe 201 and a sleeve 202; the sleeve 202 is rotatably sleeved on the pipe 201; an air window 203 is provided on the side of the pipe 201; the middle area of the sleeve 202 bulges outward, forming a buffer cavity 204 inside; an air outlet 205 is provided on the buffer cavity 204; an air guide pipe 206 is connected to the air outlet 205; the air guide pipe 206 is tangentially distributed along the rotation path of the outer surface contour of the buffer cavity 204; when the air window 203 corresponds to the position of the buffer cavity 204, the air outlet 205 sprays air to drive the buffer cavity 204 to rotate.

When the product has been poured into the unit cavity 22, spraying steam directly into the center of the cavity may easily burn the product packaging on the outside. At this time, the buffer cavity 204 can be used to change the direction of the steam from flowing along the pipe 201 to being sprayed from the air guide pipe 206, so that the water bath near the partition 21 is first deheated, and then the stirring head 231 is used to stir the entire water bath to achieve uniform heating of the product.

Two air outlet holes 205 are symmetrically arranged on the sleeve 202; the air guide tubes 206 on different air outlet holes 205 are uniformly arranged in a clockwise or counterclockwise pushing direction.

When the air guide tube 206 sprays steam, it also applies a tangential recoil force to the buffer chamber 204, so that the sleeve 202 rotates as a whole. The air guide tube 206 can also continuously change the spray direction during rotation, so as to focus on heating the water bath near the partition 21. The overall mixing action of the stirring head 231 allows the product to be gently heated to avoid direct contact with steam to cause external damage or overheating of internal food.

A baffle 207 is provided at the end of the pipe 21; the baffle 207 includes a rotatably connected fixed part 208 and a movable part 209; the movable part 209 is sealed and inlaid with the end of the sleeve 202; the fixed part 208 is connected and arranged between the pipe 21 and the movable part 209; the fixed part 208 is fixedly connected to the pipe 21; an air vent 200 is opened on the side of the connection between the pipe 21 and the fixed part 208; the sleeve 202 is damped and slidably adjusted on the outside of the pipe 21; when the buffer cavity 204 corresponds to the position of the air window 203, the movable part 209 is inlaid and blocks the end of the sleeve 202; when the sleeve 202 slides along the length direction of the pipe 201 and approaches the partition 21, the movable part 209 is separated from the sleeve 202, and the air vent 200 is connected to the outside.

As shown in FIG7 , when the movable part 209 is embedded and blocks the end of the sleeve 202, the movable part 209 and the sleeve 202 rotate synchronously, and the steam is released through the air duct 206; as shown in FIG8 , when the sleeve 202 is adjusted to be separated from the movable part 209, the steam can be ejected from the air vent 200, and the air window 203 and the air outlet 205 are staggered and no longer connected. At this time, in addition to the air vent 200, part of the steam is ejected directly from the air window 203, thereby taking into account the edge water area near the partition and the water area at the center of the unit cavity 22 at the same time, and the overall heating speed is faster, which significantly improves the heating efficiency. This heating mode can be used when the product has not yet been poured into the unit cavity 22, so there is no need to consider the problem of instantaneous overheating of the product. The temperature is adjusted and the speed is increased while ensuring the process stability of water bath pasteurization.

The cross section of the fixing member 208 gradually decreases along a direction away from the fixing member 208 .

The contracted profile of the fixing part 208 can provide a certain guidance for the injection of steam, allowing it to be injected at a certain angle to the length direction of the key 201 as shown by the arrow in the figure, thereby reducing the obstruction of the injection path by the end face of the movable part 209.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation of the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims (5)

1. A sterilization system for food processing, its characterized in that: comprises a heating chamber (1) and a heat preservation chamber (2); the heat preservation chamber (2) is arranged around the heating chamber (1); a rotary groove (11), a material frame (12) and a lifting mechanism (13) are arranged in the heating chamber (1); the rotary groove (11) is rotatably arranged in the heating chamber (1); opposite sides of the material frame (12) are respectively connected with the edge of the rotary groove (11) and the lifting mechanism (13); the middle section part of the material frame (12) is sunken into the rotary groove (11); the lifting mechanism (13) drives the material frame (12) to turn around the edge connection part of the rotary groove (11); a partition board (21) is arranged in the heat preservation chamber (2); the plurality of partition boards (21) are distributed in an annular way and divide the interior of the heat preservation chamber (2) into a plurality of unit cavities (22); the rotating rotary groove (11) drives the overturning and dumping directions of the material frame (12) to be switched between different unit cavities (22), and the top of each unit cavity (22) is opened; a material guiding plate (241) and an agitating rod (242) are arranged in the unit cavity (22); the material guiding plate (241) is obliquely arranged at the opening of the unit cavity (22); the height of the plate surface of the material guiding plate (241) gradually becomes smaller along the direction away from the heating chamber (1); the top of the material guiding plate (241) is provided with a plurality of sliding grooves (243) at intervals in parallel along the length direction of the material guiding plate; a space is reserved between the lower end of the material guiding plate (241) and the inner wall of the unit cavity (22); the stirring rod (242) is arranged below the material guiding plate (241); a lifting rod (244) is vertically inserted and arranged on the material guiding plate (241); the stirring rod (242) is connected with the lifting rod (244); the stirring rod (242) moves in the unit cavity (22) along with the lifting of the lifting rod (244); a plurality of stirring rods (242) are distributed at intervals along the height direction; different stirring rods (242) are staggered in the vertical direction, and a discharging window (25) is formed on one side of the unit cavity (22) close to the outside; a lining plate (29) is arranged at the bottom interval pad of the unit cavity (22); the height of the upper surface of the lining plate (29) gradually becomes smaller along the direction approaching the discharging window (25); the lower edge of the discharging window (25) is flush and connected with the upper surface of the lining plate (29); a conveyor belt (26) is arranged around the periphery of the heat preservation chamber (2); the conveyor belt (26) is connected and led to be arranged below a discharging path of the discharging window (25); a recovery groove (27) is arranged below the conveyor belt (26); the recovery tank (27) conveys liquid heating medium back to the interior of the rotary tank (11) and the unit cavity (22) through the filtering and heating assembly (3), and the filtering and heating assembly (3) comprises a filter screen cavity (31) and a transit cavity (32) which are sequentially connected; the inlet end of the filter screen cavity (31) is connected with a first conveying pipe (301); one end of the first conveying pipe (301) extending into the recovery tank (27) is provided with a first pump (302); a second pump is arranged in the transit cavity (32); the outlet end of the second pump is connected with a second conveying pipe (303); the second conveying pipe (303) is arranged between the top of the heating chamber (1) and the top of the heating chamber (2) in a surrounding mode; a first water outlet valve (304) is arranged on one side of the second conveying pipe (303) facing the rotary groove (11); a second water outlet valve (305) is arranged on one side of the second conveying pipe (303) facing the heat preservation chamber (2); the second water outlet valves (305) are arranged in one-to-one correspondence with the unit cavities (22); also comprises a separate heating assembly (23); the independent heating assembly (23) comprises a stirring head (231) and a steam nozzle (232); the stirring head (231) is rotatably connected with the bottom of the unit cavity (22); the stirring head (231) is positioned below the lining plate (29); the steam spray heads (232) are distributed on the partition plate (21); a steam pipeline communicated with the steam spray head (232) is arranged inside the partition plate (21); a temperature sensor (233) is also arranged on the inner wall of the unit cavity (22); the temperature sensors (233) are circumferentially distributed at intervals.

2. The sterilization system for food processing according to claim 1, wherein: the steam nozzle (232) comprises a pipe fitting (201) and a sleeve (202); the sleeve (202) is rotatably sleeved on the pipe fitting (201); a transom (203) is arranged on the side surface of the pipe fitting (201); the middle section area of the sleeve (202) bulges outwards, and a buffer cavity (204) is formed inside; an air outlet hole (205) is formed in the buffer cavity (204); an air duct (206) is connected and arranged on the air outlet hole (205); -the air ducts (206) are distributed tangentially along the path of revolution of the profile of the outer surface of the buffer chamber (204); when the louver (203) corresponds to the buffer cavity (204), the air outlet hole (205) sprays air flow to push the buffer cavity (204) to rotate.

3. A sterilization system for food processing according to claim 2 wherein: two air outlet holes (205) are symmetrically arranged on the sleeve (202); the air guide pipes (206) on different air outlet holes (205) are uniformly arranged in a clockwise or anticlockwise pushing direction.

4. A sterilization system for food processing according to claim 2 wherein: the tail end of the pipe fitting (21) is provided with a choke plug (207); the choke plug (207) comprises a fixed part (208) and a movable part (209) which are connected in a rotating way; the movable piece (209) is in sealing inlay fit with the tail end of the sleeve (202); the fixed piece (208) is connected and arranged between the pipe fitting (21) and the movable piece (209); the fixing piece (208) is fixedly connected with the pipe fitting (21); the side surface of the joint of the pipe fitting (21) and the fixing piece (208) is provided with a gas leakage port (200); -said sleeve (202) damping a sliding adjustment position outside said tubular member (21); when the buffer cavity (204) corresponds to the position of the louver (203), the movable piece (209) is embedded and blocked at the tail end of the sleeve (202); when the sleeve (202) slides along the length direction of the pipe fitting (201) to be close to the partition plate (21), the movable piece (209) is separated from the sleeve (202), and the air leakage port (200) is communicated with the outside.

5. The sterilization system for food processing according to claim 4, wherein: the cross section of the fixing member (208) is gradually reduced in a direction away from the fixing member (208).