Fluidized bed granular food quick-freezing device

Abstract

The present application relates to food quick-freezing equipment technical field, specifically to a kind of fluidized bed type granular food quick-freezing device, including quick-freezing main body, the inside of quick-freezing main body is equipped with rotary structure, the lower side of rotary structure inside is equipped with blowing mechanism, blowing mechanism left end is equipped with conversion mechanism, conversion mechanism right side is equipped with cleaning mechanism located in the upper side of blowing mechanism;The present application can drive rotary tube rotation by rotary structure, make rotary tube inner wall icing more uniform, avoid rotary tube inside always one part icing accumulation, lead to the problem of difficult cleaning in later period, by blowing mechanism drive blowing pipe rotation, make different blowing hole upward, avoid fixed blowing hole long-term upward, lead to the problem that icing will blow hole block, by dehumidification mechanism can remove the moisture in circulating cold air, avoid blowing mechanism inside icing and lead to the problem of blockage, make the fluidized bed type granular food quick-freezing device can continue to work for longer time, improve production efficiency.

Description

Technical Field

[0001] This invention relates to the field of food quick-freezing equipment technology, specifically a fluidized bed type quick-freezing device for granular food. Background Technology

[0002] Quick-freezing is a core technology in modern food processing, capable of preserving the internal moisture, nutrients, and original taste of granular foods to the maximum extent, and extending the food's shelf life. It is currently widely used in the processing of agricultural and sideline products such as fruits and vegetables, grains, seafood, shrimp, and pre-made granular ingredients. Among them, fluidized bed granular food quick-freezing equipment is the core equipment. Compared with traditional immersion and static quick-freezing equipment, it relies on the action of low-temperature and high-speed cold air to make the granular food form a suspended fluidized state on the conveyor belt, realizing all-round heat exchange without dead corners. It has many advantages such as high quick-freezing efficiency, good separation effect of individual food, wide range of applicable materials, and batch continuous operation. It meets the needs of large-scale and assembly line production in modern food processing plants and has now become the mainstream equipment for quick-freezing small and medium-sized granular food.

[0003] In existing fluidized bed quick-freezing devices, the damp materials to be frozen carry moisture, and the hot and humid air from the outside environment can easily enter the low-temperature chamber through the openings at both ends. As the water vapor circulates with the internal cold air, it easily condenses into frost after contacting the low-temperature evaporator, conveyor belt, inner wall of the frame, and air duct structure, and gradually accumulates to form an ice layer. As the ice layer thickens, it will block the ventilation channels, hinder the circulation of cold air, significantly reduce the heat exchange efficiency of the equipment, and increase the energy consumption of the equipment. It is necessary to shut down the machine regularly and rely on manual cleaning with special tools to clean the ice layer inside the equipment, which is time-consuming and labor-intensive. Therefore, there is an urgent need to design a fluidized bed quick-freezing device for granular food.

[0004] This de-icing method requires frequent interruptions to the continuous production line, which greatly reduces the effective production time and results in low production efficiency. In addition, the manual cleaning work is labor-intensive and has high maintenance costs. Repeated start-ups and shutdowns of the equipment will also aggravate the wear and tear of internal parts. The alternating hot and cold environment will also affect the service life of the equipment, which seriously restricts the production efficiency and economic benefits of quick-frozen granular food processing enterprises. Summary of the Invention

[0005] The purpose of this invention is to provide a fluidized bed type quick-freezing device for granular food, which solves the problems mentioned in the background art regarding the operation of existing fluidized bed quick-freezing devices. These devices are characterized by the presence of moisture in the wet material to be frozen, and the easy intrusion of hot, humid air from the external environment into the low-temperature chamber through the open ends. As the water vapor circulates with the internal cold air, it easily condenses into frost upon contact with the low-temperature evaporator, conveyor belt, inner wall of the frame, and air duct structure, gradually accumulating to form an ice layer. As the ice layer thickens, it blocks ventilation channels, hinders cold air circulation, significantly reduces equipment heat exchange efficiency, increases equipment energy consumption, and requires periodic shutdowns and manual cleaning of the ice layer using specialized tools, which is time-consuming and labor-intensive.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A fluidized bed granular food quick-freezing device includes: a quick-freezing body, a rotary structure inside the quick-freezing body, an air blowing mechanism on the lower side inside the rotary structure, a conversion mechanism on the left end of the air blowing mechanism, a cleaning mechanism on the right side of the conversion mechanism located above the air blowing mechanism, a dehumidification mechanism on the right end of the quick-freezing body, and a slag discharge mechanism on the left end of the quick-freezing body.

[0007] Preferably, the quick-freezing body includes an outer casing, with two end boxes fixedly installed on each of the left and right end faces of the outer casing. The bottom ends of the four end boxes are fixedly connected to the same base plate. A gap exists between the bottom surface of the outer casing and the top surface of the base plate. A feeding wheel is movably installed between the two end boxes on the left end of the outer casing, and a discharging wheel is movably installed between the two end boxes on the right end of the outer casing. A fluidizing belt is drivingly connected between the feeding wheel and the discharging wheel. Inlets and outlets are provided on both the left and right end faces of the outer casing. The upper part of the fluidizing belt passes through the two inlets and outlets and the outer casing, while the lower part passes through the gap below the outer casing. Multiple isolation curtains are fixedly installed on both the left and right end faces of the outer casing, blocking the inlets and outlets. The front end of the outer casing and the front ends of the feeding wheel and discharging wheel are also connected. The front end of each small box is open, and the openings on the outer box and the end small boxes are connected. A front cover plate is bolted to the front face of the outer box, which blocks the openings on the outer box and the end small boxes. A control cabinet is fixedly installed on the front side of the front cover plate. A radiator is fixedly installed on the top surface of the outer box. A heat exchanger located on the lower side of the upper part of the fluidizing belt is fixedly installed inside the outer box. The two ends of the heat exchanger extend from the right end face of the outer box and are fixedly connected to connecting pipes. The two free ends of the two connecting pipes are respectively connected to the two ends of the radiator. A compressor is bolted to the top surface of the outer box. The compressor is fixedly connected to the connecting pipe near the rear end of the outer box. A conveyor motor is fixedly connected to the front end of the internal shaft of the feed wheel. The conveyor motor is bolted to the inner wall of the corresponding end small box.

[0008] Preferably, the rotary structure includes a left cover and a right cover, both located inside the outer casing. The left cover is located at the left end of the outer casing, and the right cover is located at the right end. Fixed feet are fixedly connected to both sides of the left and right covers, and the fixed feet are bolted to the inner wall of the outer casing. Windows are opened on the far ends of the left and right covers, aligned with the inlet and outlet. A rotary tube is provided between the left and right covers, with the left and right covers respectively fitted onto both ends of the rotary tube. The upper belt of the fluidizing orifice passes through the windows and the rotary tube. Bearings are installed between the rotary tube and the left cover, and between the rotary tube and the right cover. Sealing rings are bolted to the near ends of the left and right covers. The ring is fitted outside the rotary tube. The heat exchanger is located inside the rotary tube and fixedly installed on the left and right covers. The air blowing mechanism, conversion mechanism, and cleaning mechanism are all located inside the rotary tube. The connecting pipe is inserted through the right cover. A bevel gear ring is fixedly fitted outside the rotary tube. A rotary motor is bolted to the top surface of the outer casing. The bottom end of the rotary motor output shaft extends into the outer casing and is fixedly fitted with a bevel gear. The bevel gear meshes with the bevel gear ring. Two isolation plates are fixedly connected between the left and right covers. The isolation plates slide in contact with the inner wall of the rotary tube. A receiving gap is formed between the two isolation plates. The fluidizing hole is inserted into the receiving gap. The inner diameter of the left end of the rotary tube is larger than that of the right end.

[0009] Preferably, the blowing mechanism includes seven blowing pipes, which are arranged at equal intervals inside the rotary tube. The blowing pipes have blowing holes on their surfaces. A partition plate is provided on the upper side of the upper belt of the fluidizing tube. The left and right ends of the partition plate are fixedly connected to the inner walls of the left and right covers, respectively. The partition plate slides in contact with the inner wall of the rotary tube. A return air chamber is formed between the top surface of the partition plate and the inner wall of the rotary tube. A return air fan is fixedly installed on the right side of the outer casing. The left end of the return air fan passes through the right cover and communicates with the return air chamber. The right end of the return air fan is fixedly connected to a return air pipe. The left end of the blowing pipe is movably sleeved on the side wall of the inner cavity of the left cover. The right end of the blowing pipe passes through the right cover. A return air box is fixedly connected to the right side of the right cover. The right end of the blowing pipe extends into the return air box. The other end of the return air pipe is fixedly connected to the right side of the return air box.

[0010] Preferably, a tilting motor is fixedly installed on the right end face of the air return box, the left end of the output shaft of the tilting motor extends into the air return box, the right end of the air blowing pipe closest to the front cover is fixedly connected to the output end of the tilting motor, the right end of the air blowing pipe connected to the tilting motor is provided with a through hole, and all air blowing pipes are fixedly sleeved with linkage gears located inside the air return box, and the linkage gears on two adjacent air blowing pipes mesh with each other.

[0011] Preferably, the bottom of the air blowing pipe is fastened with an arc plate, the left end of the arc plate is fixedly connected to the inner wall of the left cover, the right end of the arc plate is fixedly connected to the inner wall of the right cover, and both ends of the arc plate in the arc extension direction are fixedly connected with beveled blades, which slide in contact with the surface of the air blowing pipe.

[0012] Preferably, the conversion mechanism includes a long box, which is fixedly connected to the inner wall of the left cover. The long box is movably fitted onto the left end of the middle air pipe among the seven air pipes. A section of the arc plate at the bottom of this air pipe is cut off at the left end, and the newly formed left end of the air pipe is fixedly connected to the right end face of the long box. A piston block is slidably inserted inside the long box, and a reciprocating threaded tube is installed inside the piston block with a threaded fit. The reciprocating threaded tube is fixedly fitted onto the outside of the air pipe. A conversion arm is fixedly connected to the right side face of the piston block, and the right end of the conversion arm extends from the right side face of the long box and is fixedly connected to an installation head.

[0013] Preferably, the cleaning mechanism is installed outside the heat exchanger. The cleaning mechanism includes a cleaning frame located between the upper belt of the fluidizing orifice and the blowing pipe. The front and rear sides of the cleaning frame slide in contact with the inner wall of the rotary tube. Multiple cross braces are fixedly connected at equal intervals to the inner wall of the cleaning frame. Perforations are opened on both the cleaning frame and the cross braces, through which the heat exchanger passes. Annular conical blades are fixedly connected to the left and right sides of the cleaning frame and the cross braces. The annular conical blades slide around the outside of the heat exchanger. Arc-shaped blades are fixedly connected to the front and rear ends of the bottom surface of the cleaning frame. The arc-shaped blades are elastically bent, and the ends of the arc-shaped blades away from the cleaning frame slide in contact with the inner wall of the rotary tube.

[0014] Preferably, the dehumidification mechanism includes a fixed box, which is fixedly connected to the top surface of the small box at the rear right end of the outer box. The top surface of the fixed box is provided with a replacement port, and a sealing cover is movably inserted into the replacement port. The fixed box is filled with desiccant, and the return air pipe is divided into upper and lower sections, which are respectively fixedly connected to the upper and lower surfaces of the fixed box.

[0015] Preferably, the slag discharge mechanism includes a slag discharge port located at the bottom of the left cover sidewall. A slag discharge pipe is fixedly connected to the left side of the left cover, communicating with the slag discharge port. The free end of the slag discharge pipe is movably inserted into the front cover plate, and the opening of the slag discharge pipe is visible on the surface of the front cover plate. A sealing cover is movably inserted inside the slag discharge pipe, and a handle is fixedly connected to the surface of the sealing cover. Wings are fixedly connected to both sides of the sealing cover. Two fixing pipes are fixedly connected to the surface of the front cover plate, symmetrically distributed on both sides of the sealing cover. A blocking strip is movably inserted inside the fixing pipe, with the bottom end of the blocking strip extending from the bottom end of the fixing pipe and blocking the wings. The top ends of the two blocking strips are fixed together by a linkage strip, which abuts against the top surface of the fixing pipe.

[0016] The beneficial effects that can be achieved by the above embodiments of the present invention include: 1. This invention uses a quick-freezing main body to feed granular food into a rotating structure. Simultaneously, the quick-freezing main body creates a low-temperature environment within the rotating structure to achieve the purpose of quick-freezing the granular food. The rotating structure drives the rotating tube to rotate, making the ice formation on the inner wall of the rotating tube more uniform and preventing ice buildup in one area, which would lead to difficult cleaning later. The air blowing mechanism drives the air blowing pipe to rotate, ensuring different air blowing holes face upwards, preventing fixed air blowing holes from being blocked by ice over time. The dehumidification mechanism removes moisture from the circulating cold air, preventing ice buildup and blockage inside the air blowing mechanism. This allows the fluidized bed granular food quick-freezing device to operate continuously for longer periods, improving production efficiency.

[0017] 2. In this invention, while the blowing mechanism drives the blowing pipe to rotate, the arc plate with the beveled blade rotates relative to the blowing pipe. The beveled blade automatically scrapes away the frost on the surface of the blowing pipe in a timely manner. The rotating blowing pipe can drive the cleaning mechanism to move back and forth through the conversion mechanism. The annular conical blade on the cleaning mechanism automatically scrapes away the frost on the surface of the heat exchanger in a timely manner. Through the rotation of the rotary tube, the arc-shaped blade slides on the inner wall of the rotary tube, automatically scraping away the frost on the inner wall of the rotary tube in a timely manner, thereby achieving timely and automatic frost removal, preventing frost from developing into ice, and improving the quick-freezing effect.

[0018] 3. By setting the inner diameter of the left end of the rotary tube to be greater than that of the right end, the ice slag removed from the rotary tube will gradually accumulate to the left inside the rotary tube until it is collected inside the slag discharge mechanism. The slag discharge mechanism makes it easier for people to remove the ice slag without stopping the machine, allowing the fluidized bed granular food quick-freezing device to work continuously for a longer period of time and with higher production efficiency. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the three-dimensional structure after being cut along the vertical center plane; Figure 3 For the present invention Figure 1 A schematic diagram of the split structure; Figure 4 For the present invention Figure 3 A three-dimensional structural diagram of the central rotary structure; Figure 5 For the present invention Figure 1 A schematic diagram of the three-dimensional structure after being cut along the horizontal center plane; Figure 6 For the present invention Figure 4 A three-dimensional structural diagram of the central rotary tube; Figure 7 For the present invention Figure 4A three-dimensional structural diagram of the left-center cover; Figure 8 For the present invention Figure 4 A three-dimensional structural diagram of the right-side cover; Figure 9 For the present invention Figure 2 A three-dimensional structural diagram of the air blowing mechanism, the conversion mechanism, and the cleaning mechanism; Figure 10 For the present invention Figure 9 A three-dimensional structural diagram of the end furthest from the conversion mechanism; Figure 11 For the present invention Figure 9 A three-dimensional structural diagram of the intermediate conversion mechanism; Figure 12 For the present invention Figure 11 A schematic diagram of the split structure.

[0020] In the picture: 1. Quick-freezing main body; 101. Outer casing; 102. End boxes; 103. Feed roller; 104. Discharge roller; 105. Fluidization belt; 106. Inlet and outlet; 107. Isolation curtain; 108. Front cover plate; 109. Control cabinet; 110. Radiator; 111. Heat exchanger; 112. Connecting pipe; 113. Compressor; 114. Conveyor motor; 2. Rotary structure; 201. Left cover; 202. Right cover; 203. Fixed foot; 204. Window; 205. Rotary tube; 206. Bearing; 207. Closing ring; 208. Bevel gear ring; 209. Rotary motor; 210. Bevel gear; 211. Isolation plate; 212. Accommodation gap; 3. Air blowing mechanism; 301. Air blowing pipe; 302. Air blowing hole; 303. Partition plate; 304. Air return chamber; 305. Air return fan; 306. Air return pipe; 307. Air return box; 308. Linkage gear; 309. Tilting motor; 310. Constant through hole; 311. Arc plate; 312. Beveled blade; 4. Conversion mechanism; 401. Long box; 402. Piston block; 403. Reciprocating threaded pipe; 404. Conversion arm; 405. Mounting head; 5. Cleaning mechanism; 501. Cleaning frame; 502. Annular conical cutter; 503. Arc-shaped cutter; 504. Cross brace; 6. Dehumidification mechanism; 601. Fixed housing; 602. Sealing cover; 7. Slag discharge mechanism; 701. Slag discharge port; 702. Slag discharge pipe; 703. Sealing cover; 704. Handle; 705. Wing strip; 706. Fixing pipe; 707. Shielding strip; 708. Linkage strip. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0023] like Figures 1-12 As shown, this application provides a fluidized bed type quick-freezing device for granular food, including: a quick-freezing body 1, a rotary structure 2 inside the quick-freezing body 1, an air blowing mechanism 3 on the lower side inside the rotary structure 2, a conversion mechanism 4 on the left end of the air blowing mechanism 3, a cleaning mechanism 5 on the right side of the conversion mechanism 4 located above the air blowing mechanism 3, a dehumidification mechanism 6 on the right end of the quick-freezing body 1, and a slag discharge mechanism 7 on the left end of the quick-freezing body 1.

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The quick-freezing body 1 includes an outer casing 101. Two end boxes 102 are fixedly installed on both the left and right ends of the outer casing 101. The bottom ends of the four end boxes 102 are fixedly connected to the same base plate. There is a gap between the bottom surface of the outer casing 101 and the top surface of the base plate. A feeding wheel 103 is movably installed between the two end boxes 102 on the left end of the outer casing 101, and a discharging wheel 104 is movably installed between the two end boxes 102 on the right end of the outer casing 101. A fluidizing belt 10 is drivingly connected between the feeding wheel 103 and the discharging wheel 104. 5. The outer casing 101 has inlet and outlet 106 on both its left and right ends. The upper belt of the fluidizing belt 105 passes through the two inlet and outlet 106 and the outer casing 101, while the lower belt of the fluidizing belt 105 passes through the gap below the outer casing 101. Multiple isolation curtains 107 are fixedly installed on both the left and right ends of the outer casing 101 to block the inlet and outlet 106 and prevent cold air leakage. The front end of the outer casing 101 and the front end of the small box 102 at the front end of the feed wheel 103 and the discharge wheel 104 are open. The openings on the outer casing 101 and the end box 102 are connected. A front cover plate 108 is bolted to the front end face of the outer casing 101, blocking the openings on the outer casing 101 and the end box 102. A control cabinet 109 is fixedly installed on the front side of the front cover plate 108. A radiator 110 is fixedly installed on the top surface of the outer casing 101. A heat exchanger 111 is fixedly installed inside the outer casing 101, located on the lower side of the upper belt of the fluidizing belt 105. The two ends of the heat exchanger 111 extend from the right end face of the outer casing 101 and are fixedly connected to... The two free ends of the two connecting pipes 112 are respectively connected to the two ends of the radiator 110. The compressor 113 is bolted on the top surface of the outer casing 101. The compressor 113 is fixedly connected to the connecting pipe 112 near the rear end of the outer casing 101. The compressor 113 is electrically connected to the control cabinet 109. The front end of the internal shaft of the feed wheel 103 is fixedly connected to the conveyor motor 114. The conveyor motor 114 is bolted to the inner wall of the corresponding end box 102. The conveyor motor 114 is electrically connected to the control cabinet 109.

[0025] Please see Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8The rotating structure 2 includes a left cover 201 and a right cover 202, both located inside the outer casing 101. The left cover 201 is located at the left end of the outer casing 101, and the right cover 202 is located at the right end. Fixed feet 203 are fixedly connected to both sides of the left cover 201 and the right cover 202, and the fixed feet 203 are bolted to the inner wall of the outer casing 101. Windows 204 are opened on the opposite ends of the left cover 201 and the right cover 202, and the windows 204 are aligned with the inlet / outlet 106. A rotating tube is provided between the left cover 201 and the right cover 202. 205, left cover 201 and right cover 202 are respectively fitted onto both ends of rotary tube 205. The upper belt of fluidizing perforated belt 105 passes through window 204 and rotary tube 205. Bearings 206 are installed between rotary tube 205 and left cover 201 and between rotary tube 205 and right cover 202. Sealing rings 207 are bolted to the two adjacent ends of left cover 201 and right cover 202. Sealing rings 207 are fitted onto the outside of rotary tube 205. Sealing rings 207 are made of elastic rubber and serve a sealing function to reduce cold leakage. Heat exchanger 111 Located inside the rotary tube 205 and fixedly installed on the left cover 201 and right cover 202, the heat exchanger 111 is formed by bending a pipe, consisting of a bent section and a straight section. Small pieces are welded to the bent section, which is then fixed to the inner walls of the left cover 201 and right cover 202 via these small pieces. The air blowing mechanism 3, conversion mechanism 4, and cleaning mechanism 5 are all located inside the rotary tube 205. The connecting pipe 112 passes through the right cover 202. A conical toothed ring 208 is fixedly fitted onto the outside of the rotary tube 205. A rotary motor 209 is bolted to the top surface of the outer casing 101. The bottom end of the output shaft extends into the outer housing 101 and is fixedly fitted with a bevel gear 210. The bevel gear 210 meshes with the bevel gear ring 208. Two isolation plates 211 are fixedly connected between the left cover 201 and the right cover 202. The two ends of the isolation plates 211 are fixedly connected to the inner walls of the left cover 201 and the right cover 202, respectively. The isolation plates 211 slide in contact with the inner wall of the rotary tube 205. A receiving gap 212 is formed between the two isolation plates 211. The fluidizing hole band 105 is inserted into the receiving gap 212. The inner diameter of the left end of the rotary tube 205 is greater than the inner diameter of the right end.

[0026] By utilizing the slope of the inner wall of the cone-shaped cylinder, which is wider on the left and narrower on the right, and with the guidance of a weak airflow inside, the falling frost is caused to gather uniformly to the left side by its own weight.

[0027] Temperature sensors are installed on both the left cover 201 and the right cover 202. The temperature sensors are electrically connected to the control cabinet 109, and the control cabinet 109 monitors the internal temperature of the rotary tube 205 through the temperature sensors.

[0028] Please see Figure 2 , Figure 6 , Figure 9 and Figure 10The air blowing mechanism 3 includes seven air blowing pipes 301, which are arranged at equal intervals inside the rotary tube 205. Air blowing holes 302 are provided on the surface of each air blowing pipe 301. A partition plate 303 is provided on the upper side of the upper belt of the fluidizing belt 105. The left and right ends of the partition plate 303 are fixedly connected to the inner walls of the left cover 201 and right cover 202, respectively. The partition plate 303 slides in contact with the inner wall of the rotary tube 205. A return air chamber 304 is formed between the top surface of the partition plate 303 and the inner wall of the rotary tube 205. The outer casing 10... A return air fan 305 is fixedly installed on the right side. The left end of the return air fan 305 passes through the right cover 202 and is connected to the return air chamber 304. The right end of the return air fan 305 is fixedly connected to the return air pipe 306. The left end of the blowing pipe 301 is movably sleeved on the side wall of the inner cavity of the left cover 201. The right end of the blowing pipe 301 passes through the right cover 202. The right side of the right cover 202 is fixedly connected to the return air box 307. The right end of the blowing pipe 301 extends into the return air box 307. The other end of the return air pipe 306 is fixedly connected to the right side of the return air box 307.

[0029] The left end of the air tube 301 is closed, and the right end is open.

[0030] A tilting motor 309 is fixedly installed on the right end face of the air return box 307. The left end of the output shaft of the tilting motor 309 extends into the air return box 307. The right end of the air blowing pipe 301 closest to the front cover plate 108 is fixedly connected to the output end of the tilting motor 309. A constant through hole 310 is opened on the right end of the air blowing pipe 301 connected to the tilting motor 309. The constant through hole 310 is used for air passage. All air blowing pipes 301 are fixedly sleeved with a linkage gear 308 located inside the air return box 307. The linkage gears 308 on two adjacent air blowing pipes 301 mesh with each other.

[0031] An arc plate 311 is fastened to the bottom of the air tube 301. The left end of the arc plate 311 is fixedly connected to the inner wall of the left cover 201, and the right end of the arc plate 311 is fixedly connected to the inner wall of the right cover 202. Both ends of the arc plate 311 in the arc extension direction are fixedly connected to a beveled blade 312, which slides in contact with the surface of the air tube 301.

[0032] Please see Figure 2 , Figure 11 and Figure 12The conversion mechanism 4 includes a long box 401, which is fixedly connected to the inner wall of the left cover 201. The long box 401 is movably fitted onto the left end of the middle air pipe 301 among the seven air pipes 301. A section of the arc plate 311 at the bottom of this air pipe 301 is cut off at the left end. The newly formed left end of the air pipe 301 is fixedly connected to the right end face of the long box 401. A piston block 402 is slidably inserted inside the long box 401. A reciprocating threaded tube 403 is installed inside the piston block 402 with a threaded fit. The reciprocating threaded tube 403 is fixedly fitted onto the outside of the air pipe 301. A conversion arm 404 is fixedly connected to the right side face of the piston block 402. The right end of the conversion arm 404 extends out from the right side face of the long box 401 and is fixedly connected to an installation head 405.

[0033] Please see Figure 2 , Figure 9 and Figure 10 The cleaning mechanism 5 is installed outside the heat exchanger 111. The cleaning mechanism 5 includes a cleaning frame 501, which is located between the upper belt of the fluidizing hole belt 105 and the blowing pipe 301. The front and rear sides of the cleaning frame 501 are in sliding contact with the inner wall of the rotary tube 205. Multiple cross braces 504 are fixedly connected at equal intervals to the inner wall of the cleaning frame 501. Both the cleaning frame 501 and the cross braces 504 have through holes, through which the straight part of the heat exchanger 111 passes. Both the left and right sides of the cleaning frame 501 and the cross braces 504 are fixedly connected with annular conical blades 502. The annular conical blades 502 are slidably sleeved on the outside of the straight part of the heat exchanger 111. Both the front and rear ends of the bottom surface of the cleaning frame 501 are fixedly connected with arc-shaped blades 503. The arc-shaped blades 503 are elastically bent, and the ends of the arc-shaped blades 503 away from the cleaning frame 501 are in sliding contact with the inner wall of the rotary tube 205.

[0034] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The dehumidification mechanism 6 includes a fixed housing 601, which is fixedly connected to the top surface of the small box 102 at the rear right end of the outer housing 101. The top surface of the fixed housing 601 is provided with a replacement port, and a sealing cover 602 is inserted into the replacement port to seal it. The fixed housing 601 is filled with desiccant. The return air pipe 306 is divided into upper and lower sections, which are fixedly connected to the upper and lower surfaces of the fixed housing 601, respectively.

[0035] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7The slag discharge mechanism 7 includes a slag discharge port 701, which is located at the bottom of the side wall of the left cover 201. A slag discharge pipe 702 is fixedly connected to the left side of the left cover 201, and the slag discharge pipe 702 communicates with the slag discharge port 701. The free end of the slag discharge pipe 702 is movably inserted into the front cover plate 108, and the opening of the slag discharge pipe 702 is visible on the surface of the front cover plate 108. A sealing cover 703 is movably inserted into the slag discharge pipe 702, and a handle 704 is fixedly connected to the surface of the sealing cover 703 for sealing. Wing strips 705 are fixedly connected to both sides of the cover 703. Two fixing tubes 706 are fixedly connected to the surface of the front cover plate 108. The two fixing tubes 706 are symmetrically distributed on both sides of the sealing cover 703. A blocking strip 707 is movably inserted into the fixing tube 706. The bottom end of the blocking strip 707 extends out from the bottom end of the fixing tube 706 and blocks the wing strips 705. The top ends of the two blocking strips 707 are fixed together by a linkage strip 708. The linkage strip 708 abuts against the top surface of the fixing tube 706.

[0036] Working principle First, compressor 113 operates under the control of control cabinet 109. Then, compressor 113, connecting pipe 112, heat exchanger 111, and radiator 110 work together to remove heat from the inside of rotary tube 205, reducing its internal temperature. Next, return air fan 305 operates under the control of control cabinet 109. Driven by return air fan 305, air inside rotary tube 205 is blown along the path of small holes on partition plate 303, return air fan 305, return air pipe 306, fixed housing 601, return air box 307, blowing pipe 301, and blowing hole 302 towards heat exchanger 111. Heat exchanger 111 then cools the circulating air. The circulating air then acts on the granular food through small holes on fluidizing perforated belt 105. Afterward, the circulating air blowing over the food surface... The small holes on the partition plate 303 circulate again, and then the control cabinet 109 detects the internal temperature of the rotary tube 205 through the temperature sensor until the internal temperature of the rotary tube 205 reaches the preset value inside the control cabinet 109. Then, the conveyor motor 114 works under the control of the control cabinet 109. After that, the conveyor motor 114 drives the fluidized bed belt 105 to rotate through the feed wheel 103. Then, the fluidized bed belt 105 feeds the granular food on the top surface of its upper belt through the inlet / outlet 106 and window 204 at the left end of the outer casing 101 into the rotary tube 205. Then, the granular food is quickly frozen under the action of circulating air. Then, the fluidized bed belt 105 sends the granular food out through the window 204 and inlet / outlet 106 at the right end of the outer casing 101. During the above operation, the rotary motor 209 controls the rotation of the rotary tube 205. Under the control of cabinet 109, the rotating tube 205 slowly rotates through the meshing action between bevel gear 210 and bevel gear ring 208. Then, the arc-shaped blade 503 slides on the inner wall of the rotating tube 205, promptly scraping away the frost. Next, the tilting motor 309, under the control of cabinet 109, rotates the corresponding air blowing pipe 301. This air blowing pipe 301 rotates synchronously with the other air blowing pipes 301 through the meshing action between two adjacent linkage gears 308. Then, the air blowing pipe 301 continues to slowly tilt, changing the air blowing hole 302 used for ventilation. Then, the arc plate 311 slides on the surface of the air blowing pipe 301, promptly scraping away the frost. Then, the middle air blowing pipe 301 rotates the reciprocating threaded tube 403, followed by the piston... Piston block 402 moves back and forth under the action of its threaded engagement with reciprocating threaded tube 403. Then, piston block 402 moves back and forth with cleaning frame 501 through conversion arm 404 and mounting head 405. Cleaning frame 501 and its cross brace 504 move back and forth with annular conical cutter 502. Annular conical cutter 502 scrapes off the frost formed on the surface of heat exchanger 111. The scraped frost accumulates on the bottom surface of the inner cavity of rotary tube 205. Due to the setting that the inner diameter of the left end of rotary tube 205 is greater than that of the right end, the scraped frost particles will move to the left and pass through slag discharge port 701 and collect in slag discharge pipe 702. When cleaning is required, the whole assembly of shielding strip 707 and linkage strip 708 is pulled upward to release the restriction of shielding strip 707 on wing strip 705.This releases the restriction on the sealing cover 703. Then, the sealing cover 703 is pulled out using handle 704. Next, the frost inside the slag discharge pipe 702 is cleaned. After cleaning, the sealing cover 703 is inserted back into the slag discharge pipe 702. Then, the blocking strip 707 is inserted into the fixing pipe 706. The blocking strip 707 then blocks the wing strip 705, thereby blocking the sealing cover 703.

[0037] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; under the concept of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

[0038] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A fluidized bed type quick-freezing device for granular food, comprising: The quick-freezing body (1) is characterized in that a rotary structure (2) is provided inside the quick-freezing body (1), an air blowing mechanism (3) is provided on the lower side inside the rotary structure (2), a conversion mechanism (4) is provided on the left end of the air blowing mechanism (3), a cleaning mechanism (5) is provided on the right side of the conversion mechanism (4) located on the upper side of the air blowing mechanism (3), a dehumidification mechanism (6) is provided on the right end of the quick-freezing body (1), and a slag discharge mechanism (7) is provided on the left end of the quick-freezing body (1). The quick-freezing body (1) includes an outer box (101). Two end boxes (102) are fixedly installed on both the left and right ends of the outer box (101). The bottom ends of the four end boxes (102) are fixedly connected to the same base plate. There is a gap between the bottom surface of the outer box (101) and the top surface of the base plate. A feeding wheel (103) is movably installed between the two end boxes (102) on the left end of the outer box (101), and a discharging wheel (104) is movably installed between the two end boxes (102) on the right end of the outer box (101). The feeding wheel (103) and the discharging wheel (104) transmit power between each other. A fluidizing belt (105) is dynamically connected. Inlet and outlet (106) are provided on both the left and right ends of the outer casing (101). The upper belt of the fluidizing belt (105) passes through the two inlets and outlets (106) and the outer casing (101). The lower belt of the fluidizing belt (105) passes through the gap below the outer casing (101). Multiple isolation curtains (107) are fixedly installed on both the left and right ends of the outer casing (101). The isolation curtains (107) block the inlets and outlets (106). Small boxes (106) are located at the front end of the outer casing (101) and the front ends of the feed wheel (103) and discharge wheel (104). The front end of 102) is open, and the openings on the outer casing (101) and the end box (102) are connected. A front cover plate (108) is bolted to the front end of the outer casing (101). The front cover plate (108) blocks the openings on the outer casing (101) and the end box (102). A control cabinet (109) is fixedly installed on the front side of the front cover plate (108). A radiator (110) is fixedly installed on the top surface of the outer casing (101). A heat exchanger (111) located on the lower side of the upper belt of the fluidizing perforated belt (105) is fixedly installed inside the outer casing (101). 111) Two ends extend from the right end face of the outer casing (101) and are fixedly connected to the connecting pipe (112). The two free ends of the two connecting pipes (112) are respectively connected to the two ends of the radiator (110). The compressor (113) is bolted on the top surface of the outer casing (101). The compressor (113) is fixedly connected to the connecting pipe (112) near the rear end of the outer casing (101). The front end of the internal shaft of the feed wheel (103) is fixedly connected to the conveying motor (114). The conveying motor (114) is bolted on the inner wall of the corresponding end box (102). The rotating structure (2) includes a left cover (201) and a right cover (202). Both the left cover (201) and the right cover (202) are located inside the outer casing (101). The left cover (201) is located at the left end of the outer casing (101), and the right cover (202) is located at the right end of the outer casing (101). Fixed feet (203) are fixedly connected to both sides of the left cover (201) and the right cover (202). The fixed feet (203) are bolted to the inner wall of the outer casing (101). Windows (204) are opened on the two opposite ends of the left cover (201) and the right cover (202). The window (204) is aligned with the inlet / outlet (106). A rotary tube (205) is provided between the left cover (201) and the right cover (202). The left cover (201) and the right cover (202) are respectively fitted onto the two ends of the rotary tube (205). The upper belt of the fluidizing hole belt (105) passes through the window (204) and the rotary tube (205). Bearings (206) are installed between the rotary tube (205) and the left cover (201) and between the rotary tube (205) and the right cover (202). The two end faces of the left cover (201) and the right cover (202) that are close to each other are threaded. A sealing ring (207) is installed on the outside of the rotary tube (205). The heat exchanger (111) is located inside the rotary tube (205) and fixedly installed on the left cover (201) and the right cover (202). The air blowing mechanism (3), the conversion mechanism (4), and the cleaning mechanism (5) are all located inside the rotary tube (205). The connecting pipe (112) is inserted into the right cover (202). A bevel gear ring (208) is fixedly fitted on the outside of the rotary tube (205). A rotary motor (209) is bolted on the top surface of the outer casing (101). (209) The bottom end of the output shaft extends into the outer housing (101) and is fixedly fitted with a bevel gear (210). The bevel gear (210) meshes with the bevel gear ring (208). Two isolation plates (211) are fixedly connected between the left cover (201) and the right cover (202). The isolation plates (211) slide in contact with the inner wall of the rotary tube (205). A receiving gap (212) is formed between the two isolation plates (211). The fluidizing hole strip (105) is inserted into the receiving gap (212). The inner diameter of the left end of the rotary tube (205) is greater than that of the right end.

2. The fluidized bed granular food quick-freezing device according to claim 1, characterized in that, The blowing mechanism (3) includes seven blowing pipes (301), which are arranged at equal intervals inside the rotary tube (205). Blowing holes (302) are provided on the surface of the blowing pipes (301). A partition plate (303) is provided on the upper side of the upper belt of the fluidizing belt (105). The left and right ends of the partition plate (303) are fixedly connected to the inner walls of the left cover (201) and right cover (202) respectively. The partition plate (303) slides in contact with the inner wall of the rotary tube (205). A return air chamber (304) is formed between the top surface of the partition plate (303) and the inner wall of the rotary tube (205). The outer casing (1) 01) A return air fan (305) is fixedly installed on the right side. The left end of the return air fan (305) passes through the right cover (202) and is connected to the return air chamber (304). The right end of the return air fan (305) is fixedly connected to the return air pipe (306). The left end of the blowing pipe (301) is movably sleeved on the side wall of the inner cavity of the left cover (201). The right end of the blowing pipe (301) passes through the right cover (202). The right side of the right cover (202) is fixedly connected to the return air box (307). The right end of the blowing pipe (301) extends into the return air box (307). The other end of the return air pipe (306) is fixedly connected to the right side of the return air box (307).

3. The fluidized bed type quick-freezing device for granular food according to claim 2, characterized in that, A tilting motor (309) is fixedly installed on the right end face of the air return box (307). The left end of the output shaft of the tilting motor (309) extends into the air return box (307). The right end of the air blowing pipe (301) closest to the front cover plate (108) is fixedly connected to the output end of the tilting motor (309). The right end of the air blowing pipe (301) connected to the tilting motor (309) has a through hole (310). All air blowing pipes (301) are fixedly sleeved with a linkage gear (308) located inside the air return box (307). The linkage gears (308) on two adjacent air blowing pipes (301) mesh with each other.

4. A fluidized bed granular food quick-freezing device according to claim 2, characterized in that, The bottom of the air blowing pipe (301) is fastened with an arc plate (311). The left end of the arc plate (311) is fixedly connected to the inner wall of the left cover (201), and the right end of the arc plate (311) is fixedly connected to the inner wall of the right cover (202). Both ends of the arc plate (311) in the arc extension direction are fixedly connected with beveled blades (312), and the beveled blades (312) slide in contact with the surface of the air blowing pipe (301).

5. A fluidized bed granular food quick-freezing device according to claim 2, characterized in that, The conversion mechanism (4) includes a long box (401), which is fixedly connected to the inner wall of the left cover (201). The long box (401) is movably fitted on the left end of the middle air pipe (301) among the seven air pipes (301). A section of the arc plate (311) at the bottom of this air pipe (301) is cut off at the left end. The newly formed left end of the air pipe (301) is fixedly connected to the right end face of the long box (401). A piston block (402) is slidably inserted inside the long box (401). A reciprocating threaded tube (403) is installed inside the piston block (402) with a threaded fit. The reciprocating threaded tube (403) is fixedly fitted outside the air pipe (301). A conversion arm (404) is fixedly connected to the right side face of the piston block (402). The right end of the conversion arm (404) extends out from the right side face of the long box (401) and is fixedly connected to an installation head (405).

6. A fluidized bed granular food quick-freezing device according to claim 2, characterized in that, The cleaning mechanism (5) is installed outside the heat exchanger (111). The cleaning mechanism (5) includes a cleaning frame (501), which is located between the upper belt of the fluidizing hole belt (105) and the blowing pipe (301). The front and rear sides of the cleaning frame (501) are in sliding contact with the inner wall of the rotary tube (205). Multiple cross braces (504) are fixedly connected at equal intervals to the inner wall of the cleaning frame (501). Both the cleaning frame (501) and the cross braces (504) have perforations. The heat exchanger (111) passes through the perforation. The cleaning frame (501) and the cross brace (504) are fixedly connected to the left and right sides with annular cone blades (502). The annular cone blades (502) are slidably sleeved on the outside of the heat exchanger (111). The front and rear ends of the bottom surface of the cleaning frame (501) are fixedly connected with arc blades (503). The arc blades (503) are elastically bent. The end of the arc blades (503) away from the cleaning frame (501) slides in contact with the inner wall of the rotary tube (205).

7. A fluidized bed type quick-freezing device for granular food according to claim 2, characterized in that, The dehumidification mechanism (6) includes a fixed box (601), which is fixedly connected to the top surface of the end box (102) on the rear right side of the outer box (101). The top surface of the fixed box (601) is provided with a replacement port, and a sealing cover (602) is movably inserted into the replacement port. The fixed box (601) is filled with desiccant, and the return air pipe (306) is divided into upper and lower sections, which are fixedly connected to the upper and lower surfaces of the fixed box (601) respectively.

8. A fluidized bed type quick-freezing device for granular food according to claim 1, characterized in that, The slag discharge mechanism (7) includes a slag discharge port (701), which is located at the bottom of the side wall of the left cover (201). A slag discharge pipe (702) is fixedly connected to the left side of the left cover (201). The slag discharge pipe (702) communicates with the slag discharge port (701). The free end of the slag discharge pipe (702) is movably inserted into the front cover plate (108). The opening of the slag discharge pipe (702) is visible on the surface of the front cover plate (108). A sealing cap (703) is movably inserted into the slag discharge pipe (702). A handle (704) is fixedly connected to the surface of the sealing cap (703). The plug (703) has wing strips (705) fixedly connected to both sides. The front cover plate (108) has two fixed tubes (706) fixedly connected to the surface. The two fixed tubes (706) are symmetrically distributed on both sides of the plug (703). A shielding strip (707) is movably inserted inside the fixed tube (706). The bottom end of the shielding strip (707) extends out from the bottom end of the fixed tube (706) and blocks the wing strips (705). The top ends of the two shielding strips (707) are fixed together by a linkage strip (708). The linkage strip (708) abuts against the top surface of the fixed tube (706).

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