Quick freezing device for prefabricated dishes and use method of quick freezing device

Abstract

The invention discloses a quick freezing device for prefabricated vegetables and a using method thereof, and particularly relates to the technical field of prefabricated vegetable processing.The quick freezing device comprises a freezing bin, a freezing mechanism is arranged in the middle of the freezing bin, a first conveying mechanism is arranged at the front end of the freezing mechanism, and a second conveying mechanism is arranged at the tail end of the freezing mechanism; the freezing mechanism comprises two sets of first side frames which are symmetrically distributed, the first side frames are fixedly installed in the freezing bin, the top and the bottom of each first side frame are each provided with a separation conveying piece, each separation conveying piece comprises two separation side plates which are symmetrically distributed, and the separation side plates are fixedly installed on the first side frames; according to the device, by arranging the freezing mechanism, conveying type multi-stage rapid freezing is conducted on the prefabricated dishes, the freezing effect of the prefabricated dishes is improved, due to the fact that the prefabricated dishes are located in the freezing isolation bin, waste of liquid nitrogen can be effectively reduced, nitrogen is recycled at the tail end, and the device is convenient to use. And resource waste is further prevented.

Description

Technical Field

[0001] This invention relates to the field of pre-prepared food processing technology, specifically to a rapid freezing device for pre-prepared food and its usage method. Background Technology

[0002] With the rapid development of the food industry and the upgrading of consumption patterns, ready-made meals, with their advantages of convenience, efficiency, and standardization, have been widely used in various fields such as family consumption, restaurant chains, and group meal supply. The preservation of the quality and extension of the shelf life of ready-made meals rely on freezing and preservation technology—by rapidly lowering the core temperature of the ingredients to below the freezing point, microbial growth and enzymatic reactions are inhibited, thereby maximizing the preservation of the ingredients' color, taste, nutritional components, and food safety.

[0003] Traditional rapid freezing processes for pre-prepared dishes often employ liquid nitrogen freezing technology. The pre-prepared dishes are transferred to a liquid nitrogen freezing chamber for rapid freezing, and then transferred out of the chamber after freezing. However, large amounts of liquid nitrogen can easily leak at the inlet and outlet of the liquid nitrogen freezing chamber, resulting in resource waste. To address this issue, we propose a rapid freezing device for pre-prepared dishes and its usage method. Summary of the Invention

[0004] The purpose of this invention is to provide a rapid freezing device for pre-prepared dishes and a method for using it, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rapid freezing device for pre-prepared dishes, comprising a freezing chamber, a freezing mechanism in the middle of the freezing chamber, a first transmission mechanism at the front end of the freezing mechanism, and a second transmission mechanism at the end of the freezing mechanism;

[0006] The freezing mechanism includes two symmetrically distributed sets of first side frames, which are fixedly installed inside the freezing chamber. Each first side frame has a conveyor unit at its top and bottom. Each conveyor unit includes two symmetrically distributed isolation side plates, which are fixedly installed on the first side frames. A transmission horizontal shaft is rotatably mounted at both ends of each isolation side plate. Multiple transmission wheels are fixedly mounted on the outer sides of each transmission horizontal shaft. A transmission belt is movably fitted around the outer sides of each of the multiple transmission wheels. Uniformly distributed inner partitions are vertically mounted on the outer sides of each transmission belt. Sealing strips are fixedly mounted at the ends of each inner partition. The sealing strips at the ends of the inner partitions in the two conveyor units that are close to each other are in contact. Two adjacent sets of inner partitions in the two conveyor units are combined to form a freezing isolation chamber. A first infusion unit and a second infusion unit are located in the middle of the two conveyor units. A recovery unit is located on the side of the two conveyor units closest to the second transmission mechanism. The second infusion unit is located between the first infusion unit and the recovery unit.

[0007] As a preferred embodiment of the present invention, the first infusion device includes two infusion frames distributed vertically. The infusion frames are fixedly snapped into the middle of the isolation side plate in the corresponding infusion device. An infusion branch tube is fixedly installed on the outer end of the infusion frame. An infusion main tube is fixedly installed at the end of the multiple infusion branch tubes on the two infusion frames. A first connector is fixedly installed at the end of the infusion main tube. A plurality of infusion holes are evenly distributed on the inner end of the infusion frame.

[0008] A first main pipe is fixedly installed at the end of the first connector in the first infusion fitting on both sides, and the end of the first main pipe extends out of the top of the freezing chamber and is fixedly installed with a first pump.

[0009] As a preferred embodiment of the present invention, the structure of the second infusion component is the same as that of the first infusion component, and the second infusion component is fixedly fastened to the middle of the isolation side plate in the corresponding isolation component by an infusion frame;

[0010] A second main pipe is fixedly installed at the end of the first connector in the second infusion fitting on both sides, and the end of the second main pipe extends out of the top of the freezing chamber and is fixedly installed with a second pump.

[0011] As a preferred embodiment of the present invention, the recycling component includes two suction frames distributed vertically. The suction frames are fixedly snapped onto the isolation side plate of the corresponding isolation component. The inner end of the suction frame is provided with a suction port. Suction branch pipes are fixedly installed on opposite sides of the suction frames. A main suction pipe is fixedly installed at the end of the multiple suction branch pipes on the two suction frames. A second connector is fixedly installed at the end of the main suction pipe.

[0012] A third main pipe is fixedly installed at the end of the second connector in the two recovery components on both sides. The end of the third main pipe extends out of the top of the freezer compartment and is fixedly installed with a third pump.

[0013] As a preferred embodiment of the present invention, each end of the transmission horizontal shaft is fixedly equipped with an auxiliary sprocket, and an auxiliary chain is meshed with the outer sides of two corresponding auxiliary sprockets on the same side. A connecting rod corresponding to the inner partition is fixedly installed on the auxiliary chain, and the end of the connecting rod is vertically installed on the outer end of the inner partition. An isolation convex frame is fixedly installed between two isolation side plates on the same side, and the auxiliary chain is located inside the isolation convex frame.

[0014] As a preferred embodiment of the present invention, two first motors are fixedly installed on the outer wall of the freezer compartment near the first transmission mechanism. The drive end of the first motor is fixedly installed with a first shaft, the end of the first shaft extends into the freezer compartment, and the end of the first shaft is fixedly installed with the end of the transmission horizontal shaft in the corresponding transmission component.

[0015] As a preferred embodiment of the present invention, the inner side of the isolation side plate is provided with a transmission groove corresponding to the transmission belt, and the transmission belt is movably engaged in the corresponding transmission groove.

[0016] As a preferred embodiment of the present invention, the first transmission mechanism includes two symmetrically distributed sets of second side frames. The second side frames are fixedly installed inside the freezing chamber. A transmission crossbar is rotatably mounted on the top of each set of second side frames. A plurality of evenly distributed conveyor wheels are fixedly mounted on the outer side of the transmission crossbar. A conveyor belt is movably sleeved on the outer side of the conveyor wheels at the same position on the transmission crossbar. A connecting bracket is movably sleeved on the end of the transmission crossbar near the freezing mechanism. An auxiliary crossbar is fixedly mounted on the end of the connecting bracket away from the transmission crossbar. A plurality of evenly distributed first auxiliary transmission wheels are rotatably mounted on the outer side of the auxiliary crossbar. A second auxiliary transmission wheel corresponding to the first auxiliary transmission wheel is fixedly mounted on the transmission crossbar near the freezing mechanism. An auxiliary transmission belt is movably sleeved on the outer side of the transmission wheel and the second auxiliary transmission wheel. A first gear is fixedly installed at one end of the connecting bracket near the transmission crossbar. The first gear is movably sleeved on the outer side of the corresponding transmission crossbar. A second gear is meshed with the bottom of the first gear. A second shaft is fixedly installed in the middle of the second gear. The second shaft is rotatably installed on the corresponding second side frame. A second motor is fixedly installed on the side of the second side frame near the second shaft. The drive end of the second motor and the shaft end of the corresponding second shaft are fixedly installed. A sprocket drive assembly is fixedly installed at the ends of the transmission crossbar and the corresponding transmission cross shaft. The sprocket drive assembly includes two sprockets and a chain meshing with the outer side of the two sprockets. The two sprockets are respectively fixedly installed at the ends of the transmission crossbar and the transmission cross shaft.

[0017] As a preferred embodiment of the present invention, the structure of the second transmission mechanism is the same as that of the first transmission mechanism, and the connection method between the second transmission mechanism and the freezing mechanism is the same as that between the first transmission mechanism and the freezing mechanism.

[0018] A method of using a quick-freezing device for pre-prepared dishes includes the following steps:

[0019] Step 1: Turn on the two first motors to control the two first shafts and the transmission horizontal shaft to rotate synchronously and at the same speed in opposite directions, thereby driving the two auxiliary chains to transmit synchronously and at the same speed in opposite directions, and then controlling the multiple inner partitions on the two transmission belts to transmit synchronously and at the same speed in opposite directions.

[0020] The two adjacent sets of inner partitions in the two isolation components are combined to form a refrigerated isolation compartment;

[0021] While the horizontal shaft rotates, it works in conjunction with the sprocket drive group to control the horizontal transmission rods in the first and second transmission mechanisms to rotate synchronously at the same speed, thereby driving the conveyor belts in the first and second transmission mechanisms to transmit, and synchronously driving the corresponding multiple first auxiliary transmission wheels to rotate, thereby controlling the multiple auxiliary transmission belts in the first and second transmission mechanisms to transmit synchronously.

[0022] Step 2: Place the packaged pre-cooked vegetables onto the conveyor belt in the first conveyor mechanism in sequence. After automatic conveying by the conveyor belt, when the pre-cooked vegetables to be frozen are conveyed to the end of the first conveyor mechanism, the second motor is activated to drive the second gear to drive the first gear to control the connecting bracket to rotate around the conveyor crossbar as the axis, thereby controlling multiple auxiliary conveyor belts to rotate around the conveyor crossbar as the axis, so that the multiple auxiliary conveyor belts rotate to a horizontal state. The pre-cooked vegetables are then automatically fed into the lower position partition above the conveyor belt through the compensation of the multiple auxiliary conveyor belts.

[0023] After the material is fed, the second motor is turned on to drive the second gear, which in turn drives the first gear to control the connecting bracket to rotate in the opposite direction around the transmission crossbar. This controls multiple auxiliary conveyor belts to rotate in the opposite direction around the transmission crossbar, so that the multiple auxiliary conveyor belts rotate to a vertical position without affecting the transmission of the inner partition.

[0024] Step 3: After packaging, the pre-cooked food is transported above the conveyor belt in the lower position isolation component and placed in the corresponding freezing isolation chamber in sequence. When the pre-cooked food is transported to the position of the first liquid infusion component, the first pump is turned on. Liquid nitrogen is introduced into the corresponding liquid infusion frame through the first main pipe, the first connector, the liquid infusion main pipe and multiple liquid infusion branch pipes, and is evenly sprayed out through multiple liquid infusion holes to pre-rapidly freeze the pre-cooked food.

[0025] After the pre-cryogenically frozen food is transported to the second liquid infusion unit, the second pump is turned on. According to the freezing requirements, the amount of liquid nitrogen is controlled and introduced into the corresponding liquid infusion frame in the second liquid infusion unit, and then evenly sprayed out through multiple liquid infusion holes to perform a second rapid freezing of the pre-cryogenic food.

[0026] Step 4: After the pre-cooked food has undergone multiple rapid freezing processes, it continues to be transported to the recycling unit. The third pump is then turned on to extract excess nitrogen from the freezing chamber through the suction port for nitrogen recycling.

[0027] Step 5: After the frozen pre-cooked food is transferred to the end of the freezing mechanism, the frozen pre-cooked food is automatically transferred to the second transmission mechanism for automatic unloading in the same way as the first transmission mechanism.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] 1. By setting up a freezing mechanism, pre-prepared dishes are subjected to multi-stage rapid freezing via a conveyor system, which improves the freezing effect of pre-prepared dishes. Since the pre-prepared dishes are located in a freezing isolation chamber, the waste of liquid nitrogen can be effectively reduced, and nitrogen can be recycled and reused at the end, further preventing resource waste.

[0030] 2. By setting up a first and second transmission mechanism with identical structures, multiple auxiliary transmission belts can be flexibly controlled to rotate, enabling the multiple auxiliary transmission belts to compensate for the automatic feeding and unloading of pre-prepared dishes, thereby further improving the freezing efficiency of pre-prepared dishes. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of the present invention.

[0033] Figure 2 This is a schematic diagram of the structure of the freezing mechanism, the first transmission mechanism, and the second transmission mechanism in this invention.

[0034] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle.

[0035] Figure 4 This is a schematic diagram showing the structural connection of the freezing mechanism, the first transmission mechanism, and the second transmission mechanism in this invention.

[0036] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle.

[0037] Figure 6 This is a schematic diagram of the refrigeration mechanism in this invention.

[0038] Figure 7 For the present invention Figure 6 Enlarged view of point C in the middle.

[0039] Figure 8 This is a schematic diagram of the structural connection between the isolation side plate and the conveyor belt in this invention.

[0040] Figure 9 For the present invention Figure 8 Enlarged view of point D in the middle.

[0041] Figure 10 This is a schematic diagram of the structure of the first infusion device in this invention.

[0042] Figure 11 This is a schematic diagram of the structure of the recyclable component in this invention.

[0043] Figure 12 This is a schematic diagram of the structure of the first transmission mechanism in this invention.

[0044] Figure 13 For the present invention Figure 12 Enlarged view of point E in the middle.

[0045] In the diagram: 1. Freezing chamber; 2. Freezing mechanism; 3. First transmission mechanism; 4. Second transmission mechanism; 5. First motor; 51. First shaft; 6. First main pipe; 61. First pump; 7. Second main pipe; 71. Second pump; 8. Third main pipe; 81. Third pump; 9. Sprocket drive assembly; 21. First side frame; 22. Isolation side plate; 221. Transmission groove; 222. Isolation convex frame; 23. Transmission horizontal shaft; 231. Transmission wheel; 232. Transmission belt; 24. Inner partition; 241. Sealing strip; 25. Auxiliary sprocket; 251. Auxiliary chain; 252. Connecting rod; 26. First infusion component; 261 2611. Infusion frame; 262. Infusion port; 263. Infusion branch pipe; 264. Infusion main pipe; 265. First connector; 27. Second infusion component; 28. Recovery component; 281. Suction frame; 282. Suction port; 283. Suction branch pipe; 284. Suction main pipe; 285. Second connector; 31. Second side frame; 32. Transmission crossbar; 321. Conveyor wheel; 322. Conveyor belt; 33. Connecting bracket; 331. First gear; 332. Second gear; 333. Second shaft; 34. Auxiliary crossbar; 341. First auxiliary transmission wheel; 342. Second auxiliary transmission wheel; 343. Auxiliary transmission belt; 35. Second motor. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Example: Figure 1-13 As shown, the present invention provides a rapid freezing device for pre-prepared dishes, including a freezing chamber 1, a freezing mechanism 2 in the middle of the freezing chamber 1, a first transmission mechanism 3 at the front end of the freezing mechanism 2, and a second transmission mechanism 4 at the end of the freezing mechanism 2.

[0048] The freezing mechanism 2 includes two sets of first side frames 21 symmetrically distributed. The first side frames 21 are fixedly installed in the freezing compartment 1. The top and bottom of the first side frames 21 are provided with isolation conveying components. The isolation conveying components include two isolation side plates 22 symmetrically distributed. The isolation side plates 22 are fixedly installed on the first side frames 21. Transmission horizontal shafts 23 are rotatably installed at both ends of the isolation side plates 22. Multiple transmission wheels 231 are fixedly installed on the outer side of the transmission horizontal shafts 23. Transmission belts 232 are movably sleeved on the outer side of the multiple transmission wheels 231. Inner partitions 24 are evenly distributed vertically installed on the outer side of the transmission belts 232. Sealing strips 241 are fixedly installed at the ends of the inner partitions 24.

[0049] Auxiliary sprockets 25 are fixedly installed at the ends of the transmission horizontal shaft 23. Auxiliary chains 251 are meshed with the outer sides of two corresponding auxiliary sprockets 25 on the same side. A connecting rod 252 corresponding to the inner partition 24 is fixedly installed on the auxiliary chain 251. The end of the connecting rod 252 is vertically installed on the outer end of the inner partition 24. An isolation convex frame 222 is fixedly installed between two isolation side plates 22 on the same side. The auxiliary chain 251 is located inside the isolation convex frame 222.

[0050] Two first motors 5 are fixedly installed on the outer wall of the freezer compartment 1 near the first transmission mechanism 3. The drive end of the first motor 5 is fixedly installed with a first shaft 51. The end of the first shaft 51 extends into the freezer compartment 1. The end of the first shaft 51 is fixedly installed with the end of the transmission horizontal shaft 23 in the corresponding partition. By turning on the two first motors 5, the two first shafts 51 and the transmission horizontal shaft 23 are controlled to rotate synchronously and at the same speed in opposite directions, thereby driving the two auxiliary chains 251 to rotate synchronously and at the same speed in opposite directions, and then controlling the multiple inner partitions 24 on the two transmission belts 232 to rotate synchronously and at the same speed in opposite directions.

[0051] The sealing strips 241 at the ends of the inner partitions 24 that are close to each other in the two isolation components are in contact, and the two adjacent sets of inner partitions 24 in the two isolation components are combined to form a cold isolation compartment.

[0052] The middle of the two infusion units is provided with a first infusion unit 26 and a second infusion unit 27. The two infusion units are provided with a recovery unit 28 on the side near the second transmission mechanism 4. The second infusion unit 27 is located between the first infusion unit 26 and the recovery unit 28.

[0053] The first infusion unit 26 includes two infusion frames 261 distributed vertically. The infusion frames 261 are fixedly snapped into the middle of the isolation side plate 22 in the corresponding infusion unit. Infusion branch tubes 262 are fixedly installed on the outer ends of the infusion frames 261. An infusion main tube 263 is fixedly installed at the ends of multiple infusion branch tubes 262 on the two infusion frames 261. A first connector 264 is fixedly installed at the end of the infusion main tube 263. Multiple evenly distributed infusion holes 2611 are opened on the inner end of the infusion frames 261. A first main tube 6 is fixedly installed at the end of the first connector 264 in the two first infusion units 26 on both sides. The top of the freezer compartment 1 is extended and a first pump 61 is fixedly installed. The packaged pre-cooked food is transported above the conveyor belt 232 in the lower position isolation component and placed in the corresponding freezer isolation compartment in sequence. When the pre-cooked food is transported to the position of the first liquid infusion component 26, the first pump 61 is turned on. Liquid nitrogen is introduced into the corresponding liquid infusion frame 261 through the first main pipe 6, the first connector 264, the liquid infusion main pipe 263 and multiple liquid infusion branch pipes 262, and is evenly sprayed out through multiple liquid infusion holes 2611 to pre-rapidly freeze the pre-cooked food. Since the pre-cooked food is located in the freezer isolation compartment, the waste of liquid nitrogen can be effectively reduced.

[0054] The structure of the second infusion component 27 is the same as that of the first infusion component 26. The second infusion component 27 is fixedly connected to the middle of the isolation side plate 22 in the corresponding isolation component through the infusion frame 261. The ends of the first connectors 264 in the two second infusion components 27 are fixedly installed with second main pipes 7. The ends of the second main pipes 7 extend out of the top of the freezing chamber 1 and are fixedly installed with second pumps 71. After the pre-cold-frozen food is pre-frozen, it continues to be transported. When it reaches the position of the second infusion component 27, the second pumps 71 are turned on. According to the freezing requirements, the amount of liquid nitrogen is controlled and introduced into the corresponding infusion frame 261 in the second infusion component 27. It is then evenly sprayed out through multiple infusion holes 2611 to perform secondary cold freezing on the pre-cold-frozen food, further reducing the waste of liquid nitrogen.

[0055] The recovery unit 28 includes two suction frames 281 distributed vertically. The suction frames 281 are fixedly snapped onto the isolation side plate 22 in the corresponding isolation conveyor. The inner end of the suction frame 281 is provided with a suction port 282. Suction branch pipes 283 are fixedly installed on opposite sides of the suction frames 281. The ends of the multiple suction branch pipes 283 on the two suction frames 281 are fixedly installed with a suction main pipe 284. The end of the suction main pipe 284 is fixedly installed with a second connector 285. The ends of the second connectors 285 in the two recovery units 28 are fixedly installed with a third main pipe 8. The end of the third main pipe 8 extends out of the top of the freezer compartment 1 and is fixedly installed with a third pump 81. After the pre-cooked food has undergone multiple rapid freezing processes, it continues to be conveyed to the position of the recovery unit 28. The third pump 81 is turned on to draw excess nitrogen out of the freezer compartment 1 through the suction port 282 for nitrogen recovery and reuse, further preventing resource waste.

[0056] The inner side of the isolation side plate 22 is provided with a transmission groove 221 corresponding to the transmission belt 232. The transmission belt 232 is movably engaged in the corresponding transmission groove 221. The transmission belt 232 is stably transmitted in the transmission groove 221, further increasing the sealing effect of the frozen isolation chamber.

[0057] The first transmission mechanism 3 includes two symmetrically distributed sets of second side frames 31. The second side frames 31 are fixedly installed in the freezing chamber 1. A transmission crossbar 32 is rotatably installed on the top of each set of second side frames 31. Multiple evenly distributed conveyor wheels 321 are fixedly installed on the outer side of the transmission crossbar 32. A conveyor belt 322 is movably sleeved on the outer side of the conveyor wheels 321 at the same position on the transmission crossbar 32. The pre-cooked dishes to be frozen are placed on the conveyor belt 322 in the first transmission mechanism 3 in sequence. By controlling the rotation of the transmission crossbar 32, the conveyor belt 322 is driven to transport the pre-cooked dishes to be frozen. The pre-cooked dishes to be frozen are automatically fed to the freezing mechanism 2 in sequence.

[0058] A connecting bracket 33 is movably sleeved at the end of the transmission crossbar 32 located near the freezing mechanism 2. An auxiliary crossbar 34 is fixedly installed at the end of the connecting bracket 33 away from the transmission crossbar 32. Multiple first auxiliary transmission wheels 341 are rotatably installed on the outer side of the auxiliary crossbar 34. A second auxiliary transmission wheel 342 corresponding to the first auxiliary transmission wheel 341 is fixedly installed on the transmission crossbar 32 located near the freezing mechanism 2. An auxiliary transmission belt 343 is movably sleeved on the outer side of the first auxiliary transmission wheel 341 and the second auxiliary transmission wheel 342 at the same position. When the transmission crossbar 32 rotates, it drives the multiple first auxiliary transmission wheels 341 to rotate synchronously, thereby controlling the multiple auxiliary transmission belts 343 to transmit synchronously.

[0059] A first gear 331 is fixedly installed on one end of the connecting bracket 33 near the transmission crossbar 32. The first gear 331 is movably sleeved on the outside of the corresponding transmission crossbar 32. A second gear 332 is meshed with the bottom of the first gear 331. A second shaft 333 is fixedly installed in the middle of the second gear 332. The second shaft 333 is rotatably mounted on the corresponding second side frame 31. A second motor 35 is fixedly installed on the side of the second side frame 31 near the second shaft 333. The drive end of the second motor 35 is connected to the corresponding second shaft 33. The shaft end of 3 is fixedly installed. When the pre-cooked food to be frozen is transferred to the end of the first transmission mechanism 3, the second motor 35 is turned on to drive the second gear 332 to drive the first gear 331 to control the connecting bracket 33 to rotate around the transmission crossbar 32 as the axis, thereby controlling multiple auxiliary transmission belts 343 to rotate around the transmission crossbar 32 as the axis, so that the multiple auxiliary transmission belts 343 rotate to a horizontal state. The pre-cooked food is transferred to the upper part of the transmission belt 232 in the lower position partition through the compensation of the multiple auxiliary transmission belts 343, and the pre-cooked food is automatically fed.

[0060] After the material is fed, the second motor 35 is turned on to drive the second gear 332 to drive the first gear 331 to control the connecting bracket 33 to rotate in the opposite direction around the transmission crossbar 32, thereby controlling multiple auxiliary conveyor belts 343 to rotate in the opposite direction around the transmission crossbar 32, so that the multiple auxiliary conveyor belts 343 rotate to a vertical state without affecting the transmission of the inner partition 24.

[0061] A sprocket drive assembly 9 is fixedly installed at the ends of the transmission crossbar 32 and the corresponding transmission shaft 23. The sprocket drive assembly 9 includes two sprockets and a chain meshing with the outside of the two sprockets. The two sprockets are fixedly installed at the ends of the transmission crossbar 32 and the transmission shaft 23, respectively. When the transmission shaft 23 rotates, it cooperates with the transmission of the sprocket drive assembly 9 to control the transmission crossbar 32 to rotate synchronously and at the same speed.

[0062] The structure of the second transmission mechanism 4 is the same as that of the first transmission mechanism 3. The connection between the second transmission mechanism 4 and the freezing mechanism 2 is the same as that between the first transmission mechanism 3 and the freezing mechanism 2. After the frozen pre-cooked food is transferred to the end of the freezing mechanism 2, the frozen pre-cooked food is automatically transferred to the second transmission mechanism 4 for automatic unloading in the same way as the first transmission mechanism 3.

[0063] A method of using a quick-freezing device for pre-prepared dishes includes the following steps:

[0064] Step 1: Turn on the two first motors 5, control the two first shafts 51 and the transmission horizontal shaft 23 to rotate synchronously and at the same speed in opposite directions, thereby driving the two auxiliary chains 251 to transmit synchronously and at the same speed in opposite directions, and then controlling the multiple inner partitions 24 on the two transmission belts 232 to transmit synchronously and at the same speed in opposite directions.

[0065] The two adjacent sets of inner partitions 24 in the two partition components are combined to form a refrigerated isolation compartment;

[0066] While the horizontal shaft 23 rotates, it works in conjunction with the sprocket drive group 9 to control the horizontal bar 32 in the first transmission mechanism 3 and the second transmission mechanism 4 to rotate synchronously and at the same speed, driving the conveyor belt 322 in the first transmission mechanism 3 and the second transmission mechanism 4 to carry out transmission, and synchronously driving the corresponding multiple first auxiliary transmission wheels 341 to rotate, thereby controlling the multiple auxiliary transmission belts 343 in the first transmission mechanism 3 and the second transmission mechanism 4 to transmit synchronously.

[0067] Step 2: The packaged pre-cooked dishes are placed sequentially on the conveyor belt 322 in the first transmission mechanism 3. They are automatically transported by the conveyor belt 322. When the pre-cooked dishes to be frozen are transported to the end of the first transmission mechanism 3, the second motor 35 is turned on to drive the second gear 332 to drive the first gear 331 to control the connecting bracket 33 to rotate around the transmission crossbar 32. This controls the multiple auxiliary conveyor belts 343 to rotate around the transmission crossbar 32, so that the multiple auxiliary conveyor belts 343 rotate to a horizontal state. The pre-cooked dishes are transported through the compensation of the multiple auxiliary conveyor belts 343 to the upper part of the lower position partition conveyor belt 232 for automatic feeding of pre-cooked dishes.

[0068] After the material is fed, the second motor 35 is turned on to drive the second gear 332 to drive the first gear 331 to control the connecting bracket 33 to rotate in the opposite direction around the transmission crossbar 32, thereby controlling multiple auxiliary conveyor belts 343 to rotate in the opposite direction around the transmission crossbar 32, so that the multiple auxiliary conveyor belts 343 rotate to a vertical state without affecting the transmission of the inner partition 24.

[0069] Step 3: After packaging, the pre-prepared food is transported above the conveyor belt 232 in the lower position isolation component and placed in the corresponding freezing isolation chamber in sequence. When the pre-prepared food is transported to the position of the first liquid infusion component 26, the first pump 61 is turned on. Liquid nitrogen is introduced into the corresponding liquid infusion frame 261 through the first main pipe 6, the first connector 264, the liquid infusion main pipe 263 and multiple liquid infusion branch pipes 262, and is evenly sprayed out through multiple liquid infusion holes 2611 to pre-rapidly freeze the pre-prepared food.

[0070] After the pre-cryogenically frozen food is transported to the second liquid infusion unit 27, the second pump 71 is turned on. According to the freezing requirements, the amount of liquid nitrogen is controlled and introduced into the corresponding liquid infusion frame 261 in the second liquid infusion unit 27, and sprayed evenly through multiple liquid infusion holes 2611 to perform a second rapid freezing of the pre-cryogenic food.

[0071] Step 4: After the pre-cooked food has undergone multiple rapid freezing processes, it continues to be transported to the recycling unit 28. The third pump 81 is then turned on to extract excess nitrogen from the freezing chamber 1 through the suction port 282 for nitrogen recycling.

[0072] Step 5: After the frozen pre-cooked food is transferred to the end of the freezing mechanism 2, the frozen pre-cooked food is automatically transferred to the second transmission mechanism 4 in the same way as the first transmission mechanism 3 for automatic unloading.

[0073] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid freezing device for pre-prepared dishes, comprising a freezing compartment (1), characterized in that: The freezing chamber (1) is provided with a freezing mechanism (2) in the middle, a first transmission mechanism (3) is provided at the front end of the freezing mechanism (2), and a second transmission mechanism (4) is provided at the end of the freezing mechanism (2). The freezing mechanism (2) includes two symmetrically distributed sets of first side frames (21). The first side frames (21) are fixedly installed inside the freezing compartment (1). The top and bottom of the first side frames (21) are provided with isolation conveyor components. The isolation conveyor components include two symmetrically distributed isolation side plates (22). The isolation side plates (22) are fixedly installed on the first side frames (21). Transmission horizontal shafts (23) are rotatably installed at both ends of the isolation side plates (22). Multiple transmission wheels (231) are fixedly installed on the outer side of the transmission horizontal shafts (23). A transmission belt (232) is movably sleeved on the outer side of the multiple transmission wheels (231) horizontally. The conveyor belt (232) is vertically installed with uniformly distributed inner partitions (24). Each inner partition (24) is fixedly installed with a sealing strip (241). The sealing strips (241) at the ends of the inner partitions (24) that are close to each other in the two isolation conveyor components are in contact. The two adjacent sets of inner partitions (24) in the two isolation conveyor components are combined to form a cryogenic isolation chamber. The middle part of the two isolation conveyor components is provided with a first liquid infusion component (26) and a second liquid infusion component (27). The side of the two isolation conveyor components near the second transmission mechanism (4) is provided with a recovery component (28). The second liquid infusion component (27) is located between the first liquid infusion component (26) and the recovery component (28).

2. The rapid freezing device for pre-prepared dishes according to claim 1, characterized in that: The first infusion unit (26) includes two infusion frames (261) distributed vertically. The infusion frames (261) are fixedly snapped into the middle of the isolation side plate (22) in the corresponding infusion unit. An infusion branch tube (262) is fixedly installed on the outer end of the infusion frame (261). An infusion main tube (263) is fixedly installed at the end of the multiple infusion branch tubes (262) on the two infusion frames (261). A first connector (264) is fixedly installed at the end of the infusion main tube (263). A plurality of infusion holes (2611) are evenly distributed on the inner end of the infusion frame (261). The first connector (264) of the first infusion unit (26) on both sides is fixedly installed with a first main pipe (6), and the end of the first main pipe (6) extends out of the top of the freezer compartment (1) and is fixedly installed with a first pump (61).

3. The rapid freezing device for pre-prepared dishes according to claim 2, characterized in that: The structure of the second infusion component (27) is the same as that of the first infusion component (26). The second infusion component (27) is fixedly connected to the middle of the isolation side plate (22) in the corresponding isolation component by the infusion frame (261). The end of the first connector (264) in the second infusion unit (27) on both sides is fixedly installed with a second main pipe (7), and the end of the second main pipe (7) extends out of the top of the freezer compartment (1) and is fixedly installed with a second pump (71).

4. The rapid freezing device for pre-prepared dishes according to claim 3, characterized in that: The recycling component (28) includes two suction frames (281) distributed vertically. The suction frames (281) are fixedly snapped onto the isolation side plate (22) in the corresponding isolation component. The inner end of the suction frame (281) is provided with a suction port (282). Suction branch pipes (283) are fixedly installed on opposite sides of the suction frames (281). A main suction pipe (284) is fixedly installed at the end of the multiple suction branch pipes (283) on the two suction frames (281). A second connector (285) is fixedly installed at the end of the main suction pipe (284). The end of the second connector (285) in the two sides of the recovery component (28) is fixedly installed with a third main pipe (8), the end of the third main pipe (8) extends out of the top of the freezer compartment (1) and is fixedly installed with a third pump (81).

5. The rapid freezing device for pre-prepared dishes according to claim 4, characterized in that: Auxiliary sprockets (25) are fixedly installed at the ends of the transmission horizontal shaft (23). Auxiliary chains (251) are meshed with the outer sides of the two auxiliary sprockets (25) on the same side. A connecting rod (252) corresponding to the inner partition (24) is fixedly installed on the auxiliary chain (251). The end of the connecting rod (252) is vertically installed on the outer end of the inner partition (24). An isolation convex frame (222) is fixedly installed between the two isolation side plates (22) on the same side. The auxiliary chain (251) is located inside the isolation convex frame (222).

6. The rapid freezing device for pre-prepared dishes according to claim 5, characterized in that: Two first motors (5) are fixedly installed on the outer wall of the freezer compartment (1) near the first transmission mechanism (3). The drive end of the first motor (5) is fixedly installed with a first shaft (51). The end of the first shaft (51) extends into the freezer compartment (1). The end of the first shaft (51) is fixedly installed with the end of the transmission horizontal shaft (23) in the corresponding transmission component.

7. The rapid freezing device for pre-prepared dishes according to claim 6, characterized in that: The inner side of the isolation side plate (22) is provided with a transmission groove (221) corresponding to the transmission belt (232), and the transmission belt (232) is movably engaged in the corresponding transmission groove (221).

8. The rapid freezing device for pre-prepared dishes according to claim 7, characterized in that: The first transmission mechanism (3) includes two symmetrically distributed sets of second side frames (31). The second side frames (31) are fixedly installed inside the freezer compartment (1). A transmission crossbar (32) is rotatably installed on the top of each set of second side frames (31). A plurality of evenly distributed conveyor wheels (321) are fixedly installed on the outer side of the transmission crossbar (32). A conveyor belt (322) is movably sleeved on the outer side of the conveyor wheel (321) at the same position on the transmission crossbar (32). The transmission belt (322) is located near the side of the freezer mechanism (2). Each end of the crossbar (32) is movably fitted with a connecting bracket (33). An auxiliary crossbar (34) is fixedly installed at the end of the connecting bracket (33) away from the transmission crossbar (32). A plurality of first auxiliary transmission wheels (341) are rotatably installed on the outer side of the auxiliary crossbar (34). A second auxiliary transmission wheel (342) corresponding to the first auxiliary transmission wheel (341) is fixedly installed on the transmission crossbar (32) near the side of the freezing mechanism (2). The first auxiliary transmission wheel (341) and the second auxiliary transmission wheel (341) are located at the same position. 42) The outer side is movably fitted with an auxiliary transmission belt (343). The connecting bracket (33) is fixedly installed with a first gear (331) at one end near the transmission crossbar (32). The first gear (331) is movably fitted on the outer side of the corresponding transmission crossbar (32). The bottom of the first gear (331) is meshed with a second gear (332). The middle part of the second gear (332) is fixedly installed with a second shaft (333). The second shaft (333) is rotatably mounted on the corresponding second side frame (31). A second motor (35) is fixedly installed on the side of the second side frame (31) near the second shaft (333). The drive end of the second motor (35) and the shaft end of the corresponding second shaft (333) are fixedly installed. A sprocket drive assembly (9) is fixedly installed on the end of the transmission crossbar (32) and the corresponding transmission cross shaft (23). The sprocket drive assembly (9) includes two sprockets and a chain meshing with the outside of the two sprockets. The two sprockets are respectively fixedly installed on the ends of the transmission crossbar (32) and the transmission cross shaft (23).

9. A rapid freezing device for pre-prepared dishes according to claim 8, characterized in that: The structure of the second transmission mechanism (4) is the same as that of the first transmission mechanism (3), and the connection method between the second transmission mechanism (4) and the freezing mechanism (2) is the same as that between the first transmission mechanism (3) and the freezing mechanism (2).

10. A method of using the rapid freezing apparatus for pre-prepared dishes as described in claim 9, characterized in that, Includes the following steps: Step 1: Turn on the two first motors (5) and control the two first shafts (51) and the transmission horizontal shaft (23) to rotate synchronously and at the same speed in opposite directions, thereby driving the two auxiliary chains (251) to transmit synchronously and at the same speed in opposite directions, and then controlling the multiple inner partitions (24) on the two transmission belts (232) to transmit synchronously and at the same speed in opposite directions. The two adjacent sets of inner partitions (24) in the two partition components are combined to form a refrigerated isolation compartment; While the transmission horizontal shaft (23) rotates, it cooperates with the transmission of the sprocket transmission group (9) to control the transmission horizontal bar (32) in the first transmission mechanism (3) and the second transmission mechanism (4) to rotate synchronously and at the same speed, driving the conveyor belt (322) in the first transmission mechanism (3) and the second transmission mechanism (4) to transmit, and synchronously driving the corresponding multiple first auxiliary transmission wheels (341) to rotate, thereby controlling the multiple auxiliary transmission belts (343) in the first transmission mechanism (3) and the second transmission mechanism (4) to transmit synchronously; Step 2: Place the packaged pre-cooked dishes on the conveyor belt (322) of the first transmission mechanism (3) in sequence. After being automatically transported by the conveyor belt (322), when the pre-cooked dishes to be frozen are transported to the end of the first transmission mechanism (3), the second motor (35) is turned on to drive the second gear (332) to drive the first gear (331) to control the connecting bracket (33) to rotate around the transmission crossbar (32) as the axis, thereby controlling multiple auxiliary transmission belts (343) to rotate around the transmission crossbar (32) as the axis, so that multiple auxiliary transmission belts (343) rotate to a horizontal state. The pre-cooked dishes are transported to the upper part of the transmission belt (232) in the lower position partition through the compensation of multiple auxiliary transmission belts (343) for automatic feeding of pre-cooked dishes. After the material is fed, the second motor (35) is turned on to drive the second gear (332) to drive the first gear (331) to control the connecting bracket (33) to rotate in the opposite direction around the transmission crossbar (32), thereby controlling multiple auxiliary conveyor belts (343) to rotate in the opposite direction around the transmission crossbar (32), so that multiple auxiliary conveyor belts (343) rotate to a vertical state without affecting the transmission of the inner partition (24); Step 3: After packaging, the pre-cooked food is transported above the conveyor belt (232) in the lower position isolation component and placed in the corresponding freezing isolation chamber in sequence. When the pre-cooked food is transported to the position of the first liquid infusion component (26), the first pump (61) is turned on. Liquid nitrogen is introduced into the corresponding liquid infusion frame (261) through the first main pipe (6), the first connector (264), the liquid infusion main pipe (263) and multiple liquid infusion branch pipes (262), and is evenly sprayed out through multiple liquid infusion holes (2611) to pre-rapidly freeze the pre-cooked food. After the pre-cold frozen food is transported to the second liquid infusion unit (27), the second pump (71) is turned on. According to the freezing requirements, the amount of liquid nitrogen is controlled and introduced into the corresponding liquid infusion frame (261) in the second liquid infusion unit (27), and sprayed evenly through multiple liquid infusion holes (2611) to perform a second cold freezing on the pre-cold food. Step 4: After the pre-cooked food has been rapidly frozen multiple times, it continues to be transported to the recycling unit (28) position. The third pump (81) is turned on to extract the excess nitrogen from the freezing chamber (1) through the suction port (282) for nitrogen recycling. Step 5: After the frozen pre-cooked food is transferred to the end of the freezing mechanism (2), the frozen pre-cooked food is automatically transferred to the second transmission mechanism (4) in the same way as the first transmission mechanism (3) for automatic unloading.

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