A flash freezer for pre-prepared meals and a method of using the same

Abstract

The application discloses a kind of pre-cooked food quick freezing device and its using method, specifically related to pre-cooked food processing technical field, including freezing store, the middle part of the freezing store is equipped with freezing mechanism, the front end of the freezing mechanism is equipped with first transmission mechanism, the end of the freezing mechanism is equipped with second transmission mechanism;The freezing mechanism includes two groups of first side frames distributed symmetrically, the first side frame is fixedly installed in freezing store, the top and bottom of the first side frame are equipped with isolation piece, the isolation piece includes two isolation side plates distributed symmetrically, the isolation side plate is fixedly installed on the first side frame, transmission horizontal shaft is rotatably installed at both ends of the isolation side plate, the present application, by setting freezing mechanism, pre-cooked food is transmitted and multi-stage quick freezing is carried out, the freezing effect of pre-cooked food is improved, and since pre-cooked food is located in freezing isolation store, waste of liquid nitrogen can be effectively reduced, and nitrogen is recycled at the end, to further prevent resource waste.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of prefabricated dish processing, in particular to a rapid freezing device for prefabricated dishes and a use method thereof. BACKGROUND

[0002] With the rapid development of the food industry and the upgrading of consumption patterns, prefabricated dishes have been widely used in many fields such as family consumption, catering chain and group meal supply due to the advantages of convenience, efficiency and standardization. The quality preservation and shelf life extension of prefabricated dishes mainly depend on the freezing preservation technology, that is, by rapidly reducing the center temperature of food materials below the freezing point, the reproduction of microorganisms and enzyme reactions are inhibited, so that the color, taste, nutritional ingredients and food safety of food materials are maximally preserved.

[0003] The traditional rapid freezing process of prefabricated dishes mainly adopts liquid nitrogen freezing technology, and the prefabricated dishes are transferred into a liquid nitrogen freezing bin for rapid freezing. After freezing, the prefabricated dishes are transferred out of the bin. A large amount of liquid nitrogen is easily leaked at the inlet and outlet of the liquid nitrogen freezing bin, thereby causing resource waste. Therefore, the application provides a rapid freezing device for prefabricated dishes and a use method thereof to solve the above problems. SUMMARY

[0004] The application aims to provide a rapid freezing device for prefabricated dishes and a use method thereof to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a rapid freezing device for prefabricated dishes, comprising 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.

[0006] The freezing mechanism comprises two groups of first side frames which are symmetrically distributed, the first side frames are fixedly installed in the freezing bin, the top and bottom of the first side frame are provided with a separation conveying piece, the separation conveying piece comprises two isolation side plates which are symmetrically distributed, the isolation side plates are fixedly installed on the first side frame, transmission horizontal shafts are rotatably installed at both ends of the isolation side plates, a plurality of transmission wheels are fixedly installed on the outer side of the transmission horizontal shafts, transmission belts are movably sleeved on the outer side of the plurality of transmission wheels which are horizontally corresponding, inner separation plates which are uniformly distributed are vertically installed on the outer side of the transmission belts, sealing strips are fixedly installed at the ends of the inner separation plates, the sealing strips at the ends of the inner separation plates which are close to each other in the two separation conveying pieces are in contact, the inner separation plates between the two groups of adjacent inner separation plates in the two separation conveying pieces are combined to form a freezing isolation bin, a first liquid conveying piece and a second liquid conveying piece are arranged in the middle of the two separation conveying pieces, a recovery piece is arranged on the side of the two separation conveying pieces which is close to the second conveying mechanism, and the second liquid conveying piece is located between the first liquid conveying piece and the recovery piece.

[0007] As a preferred technical scheme of the present application, the first infusion member comprises two infusion frames arranged in upper and lower positions, the infusion frames are fixedly connected to the middle part of the isolation side plate in the corresponding isolation member, the outer end of the infusion frame is fixedly provided with an infusion branch pipe, the end of the plurality of infusion branch pipes on the two infusion frames is fixedly provided with an infusion main pipe, the end of the infusion main pipe is fixedly provided with a first connector, and the inner end of the infusion frame is provided with a plurality of infusion holes arranged uniformly.

[0008] The end of the first connector in the first infusion member on both sides is fixedly provided with a first main pipe, and the end of the first main pipe extends out of the top end of the freezing bin and is fixedly provided with a first pump.

[0009] As a preferred technical scheme of the present application, the structure of the second infusion member is the same as that of the first infusion member, and the second infusion member is fixedly connected to the middle part of the isolation side plate in the corresponding isolation member through the infusion frame.

[0010] The end of the first connector in the second infusion member on both sides is fixedly provided with a second main pipe, and the end of the second main pipe extends out of the top end of the freezing bin and is fixedly provided with a second pump.

[0011] As a preferred technical scheme of the present application, the recovery member comprises two suction frames arranged in upper and lower positions, the suction frames are fixedly connected to the isolation side plate in the corresponding isolation member, the inner end of the suction frame is provided with a suction port, the opposite side of the suction frame is fixedly provided with a suction branch pipe, the end of the plurality of suction branch pipes on the two suction frames is fixedly provided with a suction main pipe, and the end of the suction main pipe is fixedly provided with a second connector.

[0012] The end of the second connector in the recovery member on both sides is fixedly provided with a third main pipe, and the end of the third main pipe extends out of the top end of the freezing bin and is fixedly provided with a third pump.

[0013] As a preferred technical scheme of the present application, the end of the transmission horizontal shaft is fixedly provided with an auxiliary sprocket, the outer side of the corresponding two auxiliary sprockets on the same side is meshingly connected with an auxiliary chain, the auxiliary chain is fixedly provided with a connecting rod corresponding to the inner isolation plate, the end of the connecting rod is vertically installed on the outer end of the inner isolation plate, a isolation convex frame is fixedly installed between the two isolation side plates on the same side, and the auxiliary chain is located on the inner side of the isolation convex frame.

[0014] As a preferred technical scheme of the present application, two first motors are fixedly installed on the side of the outer wall of the freezing bin close to the first transmission mechanism, a first shaft is fixedly installed at the driving end of the first motor, the end of the first shaft extends into the freezing bin, and the end of the first shaft is fixedly installed with the end of the transmission horizontal shaft in the corresponding isolation member.

[0015] As a preferred technical scheme of the present application, 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 connected in the corresponding transmission groove.

[0016] As a preferred technical scheme of the present application, the first transmission mechanism comprises two groups of second side frames symmetrically distributed, the second side frames are fixedly installed in the freezing bin, the top of each group of the second side frames is rotatably installed with a transmission cross rod, the outer side of the transmission cross rod is fixedly installed with a plurality of conveying wheels uniformly distributed, the outer side of the conveying wheels at the same position on the transmission cross rod is movably sleeved with a conveying belt, the end of the transmission cross rod close to the side of the freezing mechanism is movably sleeved with a connecting bracket, the end of the connecting bracket away from the transmission cross rod is fixedly installed with an auxiliary cross rod, the outer side of the auxiliary cross rod is rotatably installed with a plurality of first auxiliary transmission wheels uniformly distributed, the transmission cross rod close to the side of the freezing mechanism is fixedly installed with a second auxiliary transmission wheel corresponding to the first auxiliary transmission wheel, the outer side of the first auxiliary transmission wheel and the second auxiliary transmission wheel at the same position is movably sleeved with an auxiliary transmission belt, the end of the connecting bracket close to the transmission cross rod is fixedly installed with a first gear, the first gear is movably sleeved on the outer side of the corresponding transmission cross rod, the bottom of the first gear is meshedly connected with a second gear, the middle of the second gear is fixedly installed with a second shaft, the second shaft is rotatably installed on the corresponding second side frame, the side of the second side frame close to the second shaft is fixedly installed with a second motor, the driving end of the second motor and the shaft end of the corresponding second shaft are fixedly installed, the end of the transmission cross rod and the transmission cross shaft at the corresponding position are fixedly installed with a chain wheel transmission set, the chain wheel transmission set comprises two chain wheels and a chain meshedly connected on the outer side of the two chain wheels, and the two chain wheels are fixedly installed at the end of the transmission cross rod and the transmission cross shaft respectively.

[0017] As a preferred technical scheme of the present application, the structure of the second transmission mechanism is the same as that of the first transmission mechanism, and the connection mode of the second transmission mechanism and the freezing mechanism is the same as that of the first transmission mechanism and the freezing mechanism.

[0018] A use method of the rapid freezing device for prefabricated dishes, comprising the following steps:

[0019] Step one, start two first motors, control two first shafts and transmission cross shafts to rotate synchronously and at the same speed in the reverse direction, so as to drive two auxiliary chains to transmit synchronously and at the same speed in the reverse direction, and then control a plurality of inner partition plates on two transmission belts to transmit synchronously and at the same speed in the reverse direction;

[0020] The combination of the adjacent two groups of inner partition plates in the two isolation transmission members is a freezing isolation bin.

[0021] The transmission horizontal shaft rotates simultaneously, the transmission horizontal shaft is matched with the transmission of the chain wheel transmission group, the first transmission mechanism and the second transmission mechanism are controlled to rotate synchronously and at the same speed, the conveying belt in the first transmission mechanism and the second transmission mechanism is driven to transmit, and a plurality of first auxiliary transmission wheels are driven to rotate synchronously, so that the plurality of auxiliary transmission belts are controlled to rotate synchronously with the transmission horizontal shaft as the axis, and the plurality of auxiliary transmission belts are rotated to the horizontal state.

[0022] In step two, the pre-prepared food after being packaged is placed on the conveying belt in the first transmission mechanism in sequence and is automatically transmitted by the conveying belt, when the pre-prepared food to be frozen is transmitted to the end of the first transmission mechanism, the second motor is started to drive the second gear to drive the first gear to control the connecting support to rotate around the transmission horizontal shaft, so that the plurality of auxiliary transmission belts are rotated around the transmission horizontal shaft, the plurality of auxiliary transmission belts are rotated to the horizontal state, and the pre-prepared food is transmitted to the upper side of the conveying belt in the lower position partitioning device through the compensation of the plurality of auxiliary transmission belts, and the automatic feeding of the pre-prepared food is performed.

[0023] After the feeding is completed, the second motor is started to drive the second gear to drive the first gear to control the connecting support to rotate reversely around the transmission horizontal shaft, so that the plurality of auxiliary transmission belts are rotated reversely around the transmission horizontal shaft, the plurality of auxiliary transmission belts are rotated to the vertical state, and the transmission of the inner partition plate is not affected.

[0024] In step three, the pre-prepared food after being packaged is transmitted to the upper side of the conveying belt in the lower position partitioning device and is placed in the corresponding frozen partitioning chamber in sequence, when the pre-prepared food is transmitted to the position of the first liquid conveying device, the first pump is started, liquid nitrogen is introduced into the corresponding liquid conveying frame in the second liquid conveying device through the first main pipe, the first connecting head, the liquid conveying main pipe and the plurality of liquid conveying branch pipes, and is uniformly sprayed out through the plurality of liquid conveying holes, and the pre-prepared food is pre-rapidly frozen.

[0025] After the pre-prepared food is pre-rapidly frozen, the pre-prepared food is continuously transmitted to the position of the second liquid conveying device, the second pump is started, the amount of liquid nitrogen is controlled to be introduced into the corresponding liquid conveying frame in the second liquid conveying device according to the freezing requirement, and the pre-prepared food is twice rapidly frozen through the plurality of liquid conveying holes.

[0026] In step four, after the pre-prepared food is rapidly frozen for multiple times, the pre-prepared food is continuously transmitted to the position of the recovery device, the third pump is started, and the excess nitrogen is sucked out of the frozen chamber through the suction port, and the nitrogen is recycled.

[0027] In step five, after the pre-prepared food is frozen, the pre-prepared food is automatically transmitted to the second transmission mechanism through the second transmission mechanism in the same use mode of the first transmission mechanism, and the pre-prepared food is automatically unloaded on the second transmission mechanism.

[0028] Compared with the prior art, the pre-prepared food is rapidly frozen through the plurality of liquid conveying holes, the nitrogen is recycled through the third pump, and the pre-prepared food is automatically unloaded on the second transmission mechanism through the second transmission mechanism in the same use mode of the first transmission mechanism.

[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: Figures 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 refrigeration mechanism 2 comprises two groups of first side frames 21 symmetrically distributed, which are fixedly installed in the refrigeration bin 1, and the top and bottom of the first side frame 21 are provided with a partitioning and conveying part, which comprises two symmetrically distributed partitioning side plates 22 fixedly installed on the first side frame 21, both ends of the partitioning side plate 22 are rotatably installed with a conveying horizontal shaft 23, the outer side of the conveying horizontal shaft 23 is fixedly installed with a plurality of conveying wheels 231, the outer side of the plurality of conveying wheels 231 is movably sleeved with a conveying belt 232, and the outer side of the conveying belt 232 is vertically installed with uniformly distributed inner partition plates 24, and the end of the inner partition plate 24 is fixedly installed with a sealing strip 241;

[0049] The end of the conveying horizontal shaft 23 is fixedly installed with an auxiliary chain wheel 25, and the outer sides of the two auxiliary chain wheels 25 on the same side are meshingly connected with an auxiliary chain 251, the auxiliary chain 251 is fixedly installed with a connecting rod 252 corresponding to the inner partition plate 24, the end of the connecting rod 252 is vertically installed on the outer end of the inner partition plate 24, and the two partitioning side plates 22 on the same side are fixedly installed with a partitioning convex frame 222, and the auxiliary chain 251 is located on the inner side of the partitioning convex frame 222.

[0050] The outer wall of the refrigeration bin 1 is fixedly installed with two first motors 5 near one side of the first conveying mechanism 3, the driving end of the first motor 5 is fixedly installed with a first shaft 51, the end of the first shaft 51 extends into the refrigeration bin 1, and the end of the first shaft 51 is fixedly installed with the end of the conveying horizontal shaft 23 in the corresponding partitioning and conveying part, by starting the two first motors 5, the two first shafts 51 and the conveying horizontal shafts 23 are controlled to rotate synchronously and at the same speed in opposite directions, so as to drive the two auxiliary chains 251 to transmit synchronously and at the same speed in opposite directions, and then control the plurality of inner partition plates 24 on the two conveying belts 232 to transmit synchronously and at the same speed in opposite directions.

[0051] The sealing strips 241 at the ends of the inner partition plates 24 close to each other in the two partitioning and conveying parts are in contact, and the two groups of inner partition plates 24 adjacent to each other in the two partitioning and conveying parts are combined to form a refrigeration and partitioning bin.

[0052] The middle parts of the two partitioning and conveying parts are provided with a first liquid conveying part 26 and a second liquid conveying part 27, and the side of the two partitioning and conveying parts close to the second conveying mechanism 4 is provided with a recovery part 28, and the second liquid conveying part 27 is located between the first liquid conveying part 26 and the recovery part 28.

[0053] The first liquid supply member 26 comprises two liquid supply frames 261 arranged in upper and lower positions, and the liquid supply frames 261 are fixedly connected to the middle part of the isolation side plate 22 in the corresponding isolation conveying member. The outer end of the liquid supply frame 261 is fixedly connected with a liquid supply branch pipe 262. The end of the plurality of liquid supply branch pipes 262 on the two liquid supply frames 261 is fixedly connected with a liquid supply main pipe 263. The end of the liquid supply main pipe 263 is fixedly connected with a first connecting head 264. The inner end of the liquid supply frame 261 is provided with a plurality of liquid supply holes 2611 arranged uniformly. The end of the first connecting head 264 in the two first liquid supply members 26 is fixedly connected with a first main pipe 6. The end of the first main pipe 6 extends out of the top end of the freezing bin 1 and is fixedly connected with a first pump 61. The prepared food after being packaged is transported above the conveying belt 232 in the lower position of the isolation conveying member and is sequentially arranged in the corresponding freezing isolation bin. When the prepared food is transported to the position of the first liquid supply member 26, the first pump 61 is started. Liquid nitrogen is introduced into the corresponding liquid supply frame 261 through the first main pipe 6, the first connecting head 264, the liquid supply main pipe 263 and the plurality of liquid supply branch pipes 262, and is uniformly sprayed through the plurality of liquid supply holes 2611. The prepared food is pre-quickly frozen. Since the prepared food is arranged in the freezing isolation bin, the waste of liquid nitrogen can be effectively reduced.

[0054] The second liquid supply member 27 has the same structure as the first liquid supply member 26. The second liquid supply member 27 is fixedly connected to the middle part of the isolation side plate 22 in the corresponding isolation conveying member through the liquid supply frame 261. The end of the first connecting head 264 in the two second liquid supply members 27 is fixedly connected with a second main pipe 7. The end of the second main pipe 7 extends out of the top end of the freezing bin 1 and is fixedly connected with a second pump 71. The prepared food is continuously transported after being pre-quickly frozen. The prepared food is transported to the position of the second liquid supply member 27. The second pump 71 is started. According to the freezing requirement, the amount of liquid nitrogen is introduced into the corresponding liquid supply frame 261 in the second liquid supply member 27 and is uniformly sprayed through the plurality of liquid supply holes 2611. The prepared food is twice quickly frozen, and the waste of liquid nitrogen is further reduced.

[0055] The recovery member 28 comprises two suction frames 281 arranged in upper and lower positions. The suction frames 281 are fixedly connected to the isolation side plate 22 in the corresponding isolation conveying member. The inner end of the suction frame 281 is provided with a suction port 282. The opposite side of the suction frame 281 is fixedly connected with a suction branch pipe 283. The end of the plurality of suction branch pipes 283 on the two suction frames 281 is fixedly connected with a suction main pipe 284. The end of the suction main pipe 284 is fixedly connected with a second connecting head 285. The end of the second connecting head 285 in the two recovery members 28 is fixedly connected with a third main pipe 8. The end of the third main pipe 8 extends out of the top end of the freezing bin 1 and is fixedly connected with a third pump 81. The prepared food is continuously transported after being quickly frozen for multiple times. The prepared food is transported to the position of the recovery member 28. The third pump 81 is started. The excess nitrogen is sucked out of the freezing bin 1 through the suction port 282. The nitrogen is recycled and used, and the waste of resources is further prevented.

[0056] 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 connected in the corresponding transmission groove 221, and the transmission belt 232 is stably transmitted in the transmission groove 221, further increasing the sealing effect of the frozen isolation bin.

[0057] The first transmission mechanism 3 comprises two groups of second side frames 31 symmetrically distributed, the second side frames 31 are fixedly installed in the freezing bin 1, the top of each group of second side frames 31 is rotatably installed with a transmission cross rod 32, the outer side of the transmission cross rod 32 is fixedly installed with a plurality of conveying wheels 321 uniformly distributed, the outer side of the conveying wheels 321 at the same position on the transmission cross rod 32 is movably sleeved with a conveying belt 322, the pre-prepared food to be frozen is placed on the conveying belt 322 in the first transmission mechanism 3 in sequence, the conveying belt 322 is driven to transmit by controlling the rotation of the transmission cross rod 32, so as to transport the pre-prepared food to be frozen, and the pre-prepared food to be frozen is automatically transmitted to the freezing mechanism 2 position in sequence.

[0058] The end of the transmission cross rod 32 near the freezing mechanism 2 position is movably sleeved with a connecting bracket 33, the end of the connecting bracket 33 away from the transmission cross rod 32 is fixedly installed with an auxiliary cross rod 34, the outer side of the auxiliary cross rod 34 is rotatably installed with a plurality of first auxiliary transmission wheels 341 uniformly distributed, the transmission cross rod 32 near the freezing mechanism 2 position is fixedly installed with a second auxiliary transmission wheel 342 corresponding to the first auxiliary transmission wheel 341, the outer side of the first auxiliary transmission wheel 341 and the second auxiliary transmission wheel 342 at the same position is movably sleeved with an auxiliary transmission belt 343, the plurality of first auxiliary transmission wheels 341 are synchronously rotated by the rotation of the transmission cross rod 32, so as to control the synchronous transmission of the plurality of auxiliary transmission belts 343.

[0059] The end of the connecting bracket 33 near the transmission cross rod 32 is fixedly installed with a first gear 331, the first gear 331 is movably sleeved on the outer side of the corresponding transmission cross rod 32, the bottom of the first gear 331 is engaged with a second gear 332, the middle of the second gear 332 is fixedly installed with a second shaft 333, the second shaft 333 is rotatably installed on the corresponding second side frame 31, the side of the second side frame 31 near the second shaft 333 is fixedly installed with a second motor 35, the driving end of the second motor 35 and the shaft end of the corresponding second shaft 333 are fixedly installed, when the pre-prepared food to be frozen is transmitted to the end of the first transmission mechanism 3, the second motor 35 is started to drive the second gear 332 to control the first gear 331 to rotate the connecting bracket 33 with the transmission cross rod 32 as the shaft, so as to control the plurality of auxiliary transmission belts 343 to rotate with the transmission cross rod 32 as the shaft, so that the plurality of auxiliary transmission belts 343 are rotated to the horizontal state, and the pre-prepared food is transmitted to the upper side of the transmission belt 232 in the lower position isolation transmission piece through the compensation of the plurality of auxiliary transmission belts 343, and the automatic feeding of the pre-prepared food is realized.

[0060] After the feeding is finished, the second motor 35 is started to drive the second gear 332 to drive the first gear 331 to control the connecting bracket 33 to rotate reversely around the horizontal rod 32, so as to control the plurality of auxiliary transmission belts 343 to rotate reversely around the horizontal rod 32, and the plurality of auxiliary transmission belts 343 are rotated to the vertical state without affecting the transmission of the inner partition plate 24;

[0061] The end of the transmission horizontal rod 32 and the corresponding transmission horizontal shaft 23 is fixedly installed with a chain wheel transmission set 9, the chain wheel transmission set 9 includes two chain wheels and a chain meshed outside the two chain wheels, the two chain wheels are fixedly installed at the ends of the transmission horizontal rod 32 and the transmission horizontal shaft 23 respectively, and the transmission horizontal shaft 23 rotates at the same time, and the transmission horizontal rod 32 is controlled to rotate synchronously and at the same speed through the transmission of the chain wheel transmission set 9.

[0062] The second transmission mechanism 4 has the same structure as the first transmission mechanism 3, and the connection mode of the second transmission mechanism 4 and the freezing mechanism 2 is the same as that of the first transmission mechanism 3 and the freezing mechanism 2, and after the frozen prepared food is transmitted to the end of the freezing mechanism 2, the second transmission mechanism 4 is used in the same way as the first transmission mechanism 3 to automatically transmit the frozen prepared food to the second transmission mechanism 4 for automatic unloading.

[0063] A use method of a prepared food rapid freezing device, comprising the following steps:

[0064] Step one, start two first motors 5 to control two first shafts 51 and transmission horizontal shafts 23 to rotate reversely at the same speed, thereby driving two auxiliary chains 251 to transmit reversely at the same speed, and further controlling a plurality of inner partition plates 24 on two transmission belts 232 to transmit reversely at the same speed;

[0065] The combination of the adjacent two groups of inner partition plates 24 in the two partition transmission members forms a freezing isolation chamber;

[0066] The transmission horizontal shaft 23 rotates at the same time, and the transmission horizontal rod 32 in the first transmission mechanism 3 and the second transmission mechanism 4 is controlled to rotate synchronously and at the same speed through the transmission of the chain wheel transmission set 9, thereby driving the conveying belt 322 in the first transmission mechanism 3 and the second transmission mechanism 4 to transmit, and synchronously driving a plurality of first auxiliary transmission wheels 341 to rotate, so as to control a plurality of auxiliary transmission belts 343 in the first transmission mechanism 3 and the second transmission mechanism 4 to transmit synchronously;

[0067] Step two, the pre-cooked food after packaging is placed on the conveying belt 322 in the first transmission mechanism 3, and is automatically transmitted through the conveying belt 322. When the pre-cooked food to be frozen is transmitted to the end of the first transmission mechanism 3, the second motor 35 is started 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, so as to control the plurality of auxiliary conveying belts 343 to rotate around the transmission crossbar 32, and the plurality of auxiliary conveying belts 343 are rotated to the horizontal state. The pre-cooked food is transmitted to the upper side of the transmission belt 232 in the lower position partition transmission member through the compensation of the plurality of auxiliary conveying belts 343, and the automatic feeding of the pre-cooked food is carried out.

[0068] After the feeding is completed, the second motor 35 is started to drive the second gear 332 to drive the first gear 331 to control the connecting bracket 33 to reversely rotate around the transmission crossbar 32, so as to control the plurality of auxiliary conveying belts 343 to reversely rotate around the transmission crossbar 32, and the plurality of auxiliary conveying belts 343 are rotated to the vertical state, without affecting the transmission of the inner partition plate 24.

[0069] Step three, the pre-cooked food after packaging is transmitted to the upper side of the transmission belt 232 in the lower position partition transmission member, and is sequentially placed in the corresponding frozen isolation bin. When the pre-cooked food is transported to the position of the first liquid transmission member 26, the first pump 61 is started, liquid nitrogen is introduced into the corresponding liquid transmission frame 261 through the first main pipe 6, the first connecting head 264, the liquid transmission main pipe 263 and the plurality of liquid transmission branch pipes 262, and is uniformly sprayed through the plurality of liquid transmission holes 2611, so as to pre-quickly freeze the pre-cooked food.

[0070] After the pre-cooked food is pre-quickly frozen, the pre-cooked food continues to be transmitted, and is transmitted to the position of the second liquid transmission member 27. The second pump 71 is started, and according to the freezing requirement, the amount of liquid nitrogen is introduced into the corresponding liquid transmission frame 261 in the second liquid transmission member 27, and is uniformly sprayed through the plurality of liquid transmission holes 2611, so as to second-quickly freeze the pre-cooked food.

[0071] Step four, after the pre-cooked food is pre-quickly frozen, the pre-cooked food continues to be transmitted, and is transmitted to the position of the recovery member 28. The third pump 81 is started, and the excess nitrogen gas is sucked out of the freezing bin 1 through the suction port 282, so as to recover and use the nitrogen gas.

[0072] Step five, after the pre-cooked food is frozen, the pre-cooked food is transmitted to the end of the freezing mechanism 2, and is automatically transmitted to the second transmission mechanism 4 by using the second transmission mechanism 4 in the same way as the first transmission mechanism 3, so as to automatically unload the pre-cooked food.

[0073] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A blast freezer for pre-prepared meals comprising a freezing chamber (1), characterised in that: The middle part of the freezing bin (1) is provided with a freezing mechanism (2), the front end of the freezing mechanism (2) is provided with a first conveying mechanism (3), and the tail end of the freezing mechanism (2) is provided with a second conveying mechanism (4); The freezing mechanism (2) comprises two groups of first side frames (21) which are symmetrically distributed, the first side frame (21) is fixedly installed in the freezing bin (1), the top and bottom of the first side frame (21) are provided with a partition conveying part, the partition conveying part comprises two isolation side plates (22) which are symmetrically distributed, the isolation side plate (22) is fixedly installed on the first side frame (21), the both ends of the isolation side plate (22) are rotatably installed with a conveying horizontal shaft (23), the outer side of the conveying horizontal shaft (23) is fixedly installed with a plurality of conveying wheels (231), the outer side of the plurality of conveying wheels (231) is movably sleeved with a conveying belt (232) in a horizontal corresponding mode, the outer side of the conveying belt (232) is vertically installed with evenly distributed inner partition plates (24), the end of the inner partition plate (24) is fixedly installed with a sealing strip (241), the sealing strips (241) at the ends of the inner partition plates (24) in the two partition conveying parts which are close to each other are in contact, the two groups of inner partition plates (24) between the two partition conveying parts are combined to form a freezing isolation bin, the middle part of the two partition conveying parts is provided with a first liquid conveying part (26) and a second liquid conveying part (27), one side of the two partition conveying parts close to the second conveying mechanism (4) is provided with a recovery part (28), and the second liquid conveying part (27) is located between the first liquid conveying part (26) and the recovery part (28). The first conveying mechanism (3) comprises two groups of symmetrically distributed second side frames (31) fixedly installed in the refrigeration bin (1), the top of each group of second side frames (31) is rotatably installed with a conveying cross rod (32), the outer side of the conveying cross rod (32) is fixedly installed with a plurality of uniformly distributed conveying wheels (321), the outer side of the conveying wheels (321) at the same position on the conveying cross rod (32) is movably sleeved with a conveying belt (322), the end of the conveying cross rod (32) near the side of the refrigeration mechanism (2) is movably sleeved with a connecting bracket (33), the end of the connecting bracket (33) away from the conveying cross rod (32) is fixedly installed with an auxiliary cross rod (34), the outer side of the auxiliary cross rod (34) is rotatably installed with a plurality of uniformly distributed first auxiliary transmission wheels (341), the conveying cross rod (32) near the side of the refrigeration mechanism (2) is fixedly installed with a second auxiliary transmission wheel (342) corresponding to the first auxiliary transmission wheel (341), the outer side of the first auxiliary transmission wheel (341) and the second auxiliary transmission wheel (342) at the same position is movably sleeved with an auxiliary transmission belt (343), the end of the connecting bracket (33) near the conveying cross rod (32) is fixedly installed with a first gear (331), the first gear (331) is movably sleeved on the outer side of the corresponding conveying cross rod (32), the bottom of the first gear (331) is meshingly connected with a second gear (332), the middle of the second gear (332) is fixedly installed with a second shaft (333), the second shaft (333) is rotatably installed on the corresponding second side frame (31), the side of the second side frame (31) near the second shaft (333) is fixedly installed with a second motor (35), the driving end of the second motor (35) and the shaft end of the corresponding second shaft (333) are fixedly installed, the end of the conveying cross rod (32) and the end of the corresponding transmission cross shaft (23) are fixedly installed with a chain wheel transmission set (9), the chain wheel transmission set (9) comprises two chain wheels and a chain meshingly connected on the outer sides of the two chain wheels, and the two chain wheels are fixedly installed at the ends of the conveying cross rod (32) and the transmission cross shaft (23) respectively.

2. A flash freezer for pre-prepared meals as claimed in claim 1, wherein: The first infusion member (26) comprises two infusion frames (261) distributed upward and downward, the infusion frame (261) is fixedly clamped in the middle of the corresponding isolation side plate (22) in the isolation member, the outer end of the infusion frame (261) is fixedly installed with an infusion branch pipe (262), the ends of a plurality of infusion branch pipes (262) on the two infusion frames (261) are fixedly installed with an infusion main pipe (263), the end of the infusion main pipe (263) is fixedly installed with a first connecting head (264), and the inner end of the infusion frame (261) is provided with a plurality of uniformly distributed infusion holes (2611). The ends of the first connecting heads (264) in the first infusion members (26) on both sides are fixedly installed with a first main pipe (6), and the end of the first main pipe (6) extends out of the top end of the refrigeration bin (1) and is fixedly installed with a first pump (61).

3. A blast freezer for pre-prepared meals as claimed in claim 2, wherein: The structure of the second infusion member (27) is the same as that of the first infusion member (26), and the second infusion member (27) is fixedly clamped in the middle of the isolation side plate (22) of the corresponding isolation and infusion member through an infusion frame (261); The end portion of the first connecting head (264) of the second infusion member (27) on both sides is fixedly installed with a second main pipe (7), and the end portion of the second main pipe (7) extends out of the top end of the freezing bin (1) and is fixedly installed with a second pump (71).

4. A blast freezer for pre-prepared meals as claimed in claim 3, wherein: The recycling member (28) comprises two suction frames (281) distributed upward and downward, the suction frames (281) are fixedly clamped on the isolation side plate (22) of the corresponding isolation and infusion member, the inner end of the suction frame (281) is provided with a suction port (282), and the opposite sides of the suction frame (281) are fixedly installed with suction branch pipes (283), the end portions of a plurality of suction branch pipes (283) on the two suction frames (281) are fixedly installed with a suction main pipe (284), and the end portion of the suction main pipe (284) is fixedly installed with a second connecting head (285); The end portion of the second connecting head (285) of the recycling member (28) on both sides is fixedly installed with a third main pipe (8), and the end portion of the third main pipe (8) extends out of the top end of the freezing bin (1) and is fixedly installed with a third pump (81).

5. A blast freezer for pre-prepared meals as claimed in claim 4, wherein: The end portions of the transmission horizontal shafts (23) are fixedly installed with auxiliary chain wheels (25), and the outer sides of the corresponding two auxiliary chain wheels (25) on the same side are meshingly connected with an auxiliary chain (251), the auxiliary chain (251) is fixedly installed with a connecting rod (252) corresponding to the inner partition plate (24), the end portions of the connecting rod (252) are perpendicularly installed on the outer end of the inner partition plate (24), and isolation convex frames (222) are fixedly installed between the two isolation side plates (22) on the same side, and the auxiliary chain (251) is located on the inner side of the isolation convex frame (222).

6. A blast freezer for pre-prepared meals as claimed in claim 5, wherein: Two first motors (5) are fixedly installed on the side of the outer wall of the freezing bin (1) close to the first transmission mechanism (3), a driving end of the first motor (5) is fixedly installed with a first shaft (51), the end portion of the first shaft (51) extends into the freezing bin (1), and the end portions of the first shaft (51) are fixedly installed with the end portions of the transmission horizontal shafts (23) in the corresponding isolation and infusion member.

7. A blast freezer for pre-prepared meals as claimed in claim 6, wherein: 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 clamped in the corresponding transmission groove (221).

8. A blast freezer for pre-prepared meals as claimed in claim 7, wherein: The structure of the second transmission mechanism (4) is the same as that of the first transmission mechanism (3), and the connection mode of the second transmission mechanism (4) and the freezing mechanism (2) is the same as that of the first transmission mechanism (3) and the freezing mechanism (2).

9. A method of using the flash freezer device for pre-prepared meals of claim 8, wherein, The method comprises the following steps: Step one, start the two first motors (5), control the two first shafts (51) and the transmission horizontal shafts (23) to rotate synchronously and at the same speed in opposite directions, so as to drive the two auxiliary chains (251) to transmit synchronously and at the same speed in opposite directions, and then control a plurality of inner partition plates (24) on the two transmission belts (232) to transmit synchronously and at the same speed in opposite directions. The two groups of inner partitions (24) in the two partitioning members are combined to form a freezing partitioning compartment; When the transmission horizontal shaft (23) rotates, the first transmission mechanism (3) and the second transmission mechanism (4) are controlled to rotate synchronously and at the same speed by the transmission of the chain wheel transmission set (9), the conveying belts (322) in the first transmission mechanism (3) and the second transmission mechanism (4) are driven to convey, and a plurality of first auxiliary transmission wheels (341) are driven to rotate, so that the plurality of auxiliary transmission belts (343) are controlled to convey synchronously; Step two, the pre-prepared food after being packaged is placed on the conveying belt (322) in the first transmission mechanism (3) in sequence, and is automatically conveyed through the conveying belt (322), when the pre-prepared food to be frozen is conveyed to the end of the first transmission mechanism (3), the second motor (35) is started to drive the second gear (332) to drive the first gear (331) to control the connecting bracket (33) to rotate around the transmission horizontal shaft (32), so that the plurality of auxiliary transmission belts (343) are controlled to rotate around the transmission horizontal shaft (32), and the plurality of auxiliary transmission belts (343) are rotated to the horizontal state, the pre-prepared food is conveyed to the upper side of the conveying belt (232) in the lower position partitioning member through the compensation of the plurality of auxiliary transmission belts (343), and the automatic feeding of the pre-prepared food is performed; After the feeding is completed, the second motor (35) is started to drive the second gear (332) to drive the first gear (331) to control the connecting bracket (33) to reversely rotate around the transmission horizontal shaft (32), so that the plurality of auxiliary transmission belts (343) are controlled to reversely rotate around the transmission horizontal shaft (32), and the plurality of auxiliary transmission belts (343) are rotated to the vertical state, without affecting the conveying of the inner partition (24); Step three, the pre-prepared food after being packaged is conveyed to the upper side of the conveying belt (232) in the lower position partitioning member, and is placed in the corresponding freezing partitioning compartment in sequence, when the pre-prepared food is conveyed to the position of the first liquid conveying member (26), the first pump (61) is started, liquid nitrogen is introduced into the corresponding liquid conveying frame (261) through the first main pipe (6), the first connecting head (264), the liquid conveying main pipe (263) and the plurality of liquid conveying branch pipes (262), and is uniformly sprayed through the plurality of liquid conveying holes (2611), so that the pre-prepared food is pre-rapidly frozen; After the pre-prepared food is pre-rapidly frozen, the pre-prepared food continues to be conveyed, and is conveyed to the position of the second liquid conveying member (27), the second pump (71) is started, according to the freezing requirement, the amount of liquid nitrogen introduced into the corresponding liquid conveying frame (261) in the second liquid conveying member (27) is controlled, and is uniformly sprayed through the plurality of liquid conveying holes (2611), so that the pre-prepared food is twice rapidly frozen; Step four, after the pre-prepared food is rapidly frozen for multiple times, the pre-prepared food continues to be conveyed, and is conveyed to the position of the recovery member (28), the third pump (81) is started, and the excess nitrogen is sucked out of the freezing compartment (1) through the suction port (282), so that the nitrogen is recycled and used. Step five, after the frozen pre-prepared food is transmitted to the end of the freezing mechanism (2), the second transmission mechanism (4) is used in the same way as the first transmission mechanism (3) to automatically transmit the frozen pre-prepared food to the second transmission mechanism (4) for automatic unloading.

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