CN219913709U - Tunnel type freeze-drying product production line - Google Patents

Abstract

The utility model discloses a tunnel type freeze-dried product production line, which comprises the following steps: the freeze-drying assembly comprises a freeze-drying box and a freeze-drying fan, a freeze-drying tunnel is formed in the freeze-drying box, a plurality of liquid nitrogen spraying inlets are arranged in the freeze-drying tunnel, the liquid nitrogen spraying inlets are sequentially arranged along the length direction of the freeze-drying tunnel, and the freeze-drying fan is arranged on the freeze-drying box and located in the freeze-drying tunnel; the conveying assembly comprises a circulating conveying line and a die, the circulating conveying line is of an annular structure, a moving part capable of moving circularly is arranged on the circulating conveying line, and the die is arranged on the moving part; wherein, circulation transfer chain runs through freeze-drying tunnel. The method reduces liquid nitrogen waste and optimizes the freeze-drying effect of the tunnel freeze-drying product production line.

Description

Tunnel type freeze-drying product production line

Technical Field

The utility model relates to the technical field of machinery, in particular to a tunnel type freeze-drying product production line.

Background

The continuous development of freeze-drying technology is widely applied to the food processing industry. Chinese patent publication No. CN 210116970U discloses an automatic production line for lyophilized products, in which articles to be lyophilized are input into a lyophilization cabinet through a conveyor belt and pushed into the lyophilization cabinet by a push plate for lyophilization. But in order to provide production efficiency then need carry out the freeze-drying operation along carrying many freeze-drying cabinets of guipure configuration, but, at in-service use in-process, the nitrogen gas in the freeze-drying cabinet will cause to leak at every turn of switch freeze-drying cabinet, and then lead to the liquid nitrogen extravagant to, treat that the article of freeze-drying enters into the freeze-drying cabinet can, still there is freeze-drying temperature distribution inhomogeneous and lead to freeze-drying effect relatively poor because of the bottom surface contact freeze-drying cabinet's bottom plate. How to design a technology for reducing liquid nitrogen waste and optimizing freeze-drying effect is the technical problem to be solved by the utility model.

Disclosure of Invention

The utility model provides a tunnel type freeze-dried product production line, which can reduce liquid nitrogen waste and optimize freeze-drying effect of the tunnel type freeze-dried product production line.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a tunnel type freeze-dried product production line, which comprises the following steps:

the freeze-drying assembly comprises a freeze-drying box and a freeze-drying fan, a freeze-drying tunnel is formed in the freeze-drying box, a plurality of liquid nitrogen spraying inlets are arranged in the freeze-drying tunnel, the liquid nitrogen spraying inlets are sequentially arranged along the length direction of the freeze-drying tunnel, and the freeze-drying fan is arranged on the freeze-drying box and located in the freeze-drying tunnel;

the conveying assembly comprises a circulating conveying line and a die, the circulating conveying line is of an annular structure, a moving part capable of moving circularly is arranged on the circulating conveying line, and the die is arranged on the moving part;

wherein, circulation transfer chain runs through freeze-drying tunnel.

Further, the freeze-drying fan comprises a motor and metal blades, the motor is located outside the freeze-drying tunnel and arranged on the freeze-drying box, a rotating shaft of the motor stretches into the freeze-drying tunnel, and the metal blades are arranged on the rotating shaft and located in the freeze-drying tunnel.

Further, along the length direction of the freeze-drying tunnel, a plurality of freeze-drying fans are arranged on the freeze-drying box.

Further, both ends of the freeze drying box are respectively provided with an air curtain machine configured to form an air curtain at a port of the freeze drying tunnel.

Further, the die comprises a mounting seat, a first die body and a second die body, wherein the upper end part of the first die body and the upper end part of the second die body are respectively and rotatably arranged on the mounting seat, model grooves are respectively formed on opposite surfaces of the first die body and the second die body, a die cavity is formed when the two model grooves are buckled relatively, and the mounting seat is arranged on the movable part;

the transfer assembly further includes a drive member disposed on the first mold body and the second mold body and configured to drive rotation of the first mold body and the second mold body;

the tunnel freeze-dried product production line further comprises a liquid storage tank configured to store liquid material with freeze-drying; the liquid storage tank is arranged on one side of the freeze-drying box, and part of the circulating conveying line is positioned right above the liquid storage tank.

Further, a rotating shaft is arranged on the mounting seat, and the upper ends of the first die body and the second die body are rotatably arranged on the mounting seat through the rotating shaft respectively.

Further, the driving part comprises a first permanent magnet and a second permanent magnet, the first permanent magnet is arranged on the first die body, and the second permanent magnet is arranged on the second die body;

the circulating conveyor line further comprises an annular sliding rail, the moving part is slidably arranged on the annular sliding rail, a first electromagnet is arranged on one side of the annular sliding rail, and a second electromagnet is arranged on the other side of the annular sliding rail; the first electromagnet is configured to generate magnetic force with the first permanent magnet below, and the second electromagnet is configured to generate magnetic force with the second permanent magnet below.

Further, a return spring is arranged between the first die body and the second die body.

Further, the first die body and the second die body are heat conductors; and/or the model groove is provided with a hydrophobic coating.

Further, a clamp is arranged on the moving part, and the clamp clamps the mounting seat.

Compared with the prior art, the technical scheme of the utility model has the following technical effects: the freeze-drying tunnel is formed in the freeze-drying box, a plurality of liquid nitrogen injection ports are formed in the freeze-drying tunnel so as to inject liquid nitrogen for freeze-drying treatment, the conveying assembly adopts a circulating conveying line and penetrates through the freeze-drying tunnel, the die is suspended on a moving part of the circulating conveying line, the die follows the moving part to enter the freeze-drying tunnel, and the die is suspended, so that the surrounding refrigeration of the die is uniform, the material to be freeze-dried in the die is uniformly heated by 360 degrees to optimize the freeze-drying effect, the material to be freeze-dried can be uniformly heated, and the recovery automation after filling and freeze-drying is realized; in addition, the liquid nitrogen of liquid nitrogen spouting the mouth is evenly dispersed under the freeze-drying fan drive effect in the freeze-drying tunnel, and nitrogen gas forms the circulating air current in the freeze-drying tunnel under the effect of freeze-drying fan, reaches constant temperature freeze-drying when reuse, further guarantees the homogeneity of freezing energy, and the air curtain machine at tunnel both ends forms the air curtain, further prevents that the air conditioner from leaking outward, realizes reducing the liquid nitrogen extravagant and optimizes the freeze-drying effect of tunnel type freeze-drying product production line.

Drawings

FIG. 1 is a schematic diagram of a tunnel freeze-dried product production line according to the present utility model;

FIG. 2 is a schematic view of the structure of a cleaning assembly in a tunnel freeze-dried product production line according to the present utility model;

FIG. 3 is a schematic view of a drying assembly in a tunnel freeze-dried product production line according to the present utility model;

FIG. 4 is a schematic view of the structure of a conveying assembly in a tunnel freeze-dried product production line according to the present utility model;

FIG. 5 is an enlarged partial schematic view of area A of FIG. 4;

FIG. 6 is a schematic diagram of a mold in a tunnel freeze-dried product production line according to the present utility model;

FIG. 7 is an assembly view of a lyophilization assembly and a transport assembly in a tunnel lyophilization product line according to the present utility model;

fig. 8 is a cross-sectional view of a lyophilization assembly in a tunnel lyophilization product line in accordance with the utility model.

Reference numerals:

a liquid storage component 1;

a liquid storage rack 11 and a liquid storage tank 12;

a lyophilization assembly 2;

a freeze-drying rack 21, a freeze-drying box 22, a freeze-drying fan 23 and an air curtain 24;

a liquid nitrogen injection port 221;

a blanking assembly 3;

a blanking frame 31 and a blanking plate 32;

a cleaning assembly 4;

a cleaning rack 41, a cleaning tank 42, and a nozzle 43;

a drying assembly 5;

a drying rack 51, a drying box 52, a heating pipe 53, and a heating fan 54;

a sterilizing assembly 6;

a sterilizing rack 61 and a sterilizing box 62;

a conveying assembly 7;

a circulation line 71, a die 72, a driving member 73, and a column 74;

a moving member 711, a first permanent magnet 731, a second permanent magnet 732, and a guide bar 714;

the mold comprises a mold groove 720, a first mold body 721, a second mold body 722, a mounting seat 723, a first permanent magnet 731 and a second permanent magnet 732;

and feet 8.

Description of the embodiments

In a first embodiment, as shown in fig. 1-8, the present utility model provides a tunnel freeze-dried product production line, which comprises a freeze-drying assembly 2 and a conveying assembly 7.

The freeze-drying assembly comprises a freeze-drying box 22 and a freeze-drying fan 23, a freeze-drying tunnel is formed in the freeze-drying box 22, a plurality of liquid nitrogen injection ports 221 are arranged in the freeze-drying tunnel, the liquid nitrogen injection ports 221 are sequentially arranged along the length direction of the freeze-drying tunnel, and the freeze-drying fan 23 is arranged on the freeze-drying box 22 and is positioned in the freeze-drying tunnel;

the conveying assembly comprises a circulating conveying line 71 and a die 72, wherein the circulating conveying line is of an annular structure, a moving part 711 which moves circularly is arranged on the circulating conveying line, and the die is arranged on the moving part;

wherein, circulation transfer chain runs through freeze-drying tunnel.

Specifically, during actual use, the moving member 711 on the circulation line 71 will drive the mold to move circularly, so that the mold enters the freeze-drying tunnel formed by the freeze-drying box 22 in a suspended state. Liquid nitrogen is injected into the freeze-drying tunnel through the liquid nitrogen injection port 221, and is driven by the freeze-drying fan 23 to be uniformly dispersed in the freeze-drying tunnel after being gasified, so that the mold 72 can be uniformly refrigerated.

The freeze-drying tunnel is formed in the freeze-drying box, a plurality of liquid nitrogen injection ports are formed in the freeze-drying tunnel so as to inject liquid nitrogen for freeze-drying treatment, the conveying assembly adopts a circulating conveying line and penetrates through the freeze-drying tunnel, the die is suspended on a moving part of the circulating conveying line, the die follows the moving part to enter the freeze-drying tunnel, and the die is suspended, so that the surrounding refrigeration of the die is uniform, and the material to be freeze-dried in the die is uniformly heated by 360 degrees so as to optimize the freeze-drying effect; in addition, the liquid nitrogen of liquid nitrogen injection port is evenly dispersed under the drive of a freeze-drying fan in the freeze-drying tunnel, and nitrogen forms circulating air flow in the freeze-drying tunnel under the effect of the freeze-drying fan, so that constant-temperature freeze-drying is achieved while recycling, the uniformity of freezing energy is further ensured, and the freeze-drying effect of reducing liquid nitrogen waste and optimizing a tunnel type freeze-drying product production line is realized.

Further, the freeze-drying fan 23 includes a motor and a metal blade, the motor is located outside the freeze-drying tunnel and is disposed on the freeze-drying box 22, a rotating shaft of the motor extends into the freeze-drying tunnel, and the metal blade is disposed on the rotating shaft and is located in the freeze-drying tunnel.

Specifically, adopt metal blade to rotate in the freeze-drying tunnel to satisfy the requirement that low temperature nitrogen gas flows in the freeze-drying tunnel, and metal blade use reliability is higher, and the motor is located the outside in order to ensure the safe and reliable of use of motor in the freeze-drying tunnel.

Further, in order to more effectively improve the freeze-drying efficiency and maintain the uniformity of the temperature distribution in the freeze-drying tunnel, a plurality of freeze-drying fans 23 are provided on the freeze-drying box 22 along the length direction of the freeze-drying tunnel. Correspondingly, a plurality of liquid nitrogen injection ports 221 are arranged in the freeze-drying tunnel at positions adjacent to the freeze-drying fan 23.

Specifically, during use, the liquid nitrogen injection port 221 injects liquid nitrogen, and the liquid nitrogen is injected into the freeze-drying tunnel to form low-temperature nitrogen gas and can be uniformly dispersed under the action of the freeze-drying fan 23.

Wherein, in order to improve the utilization efficiency of liquid nitrogen, still be provided with wind channel 231 on the freeze-drying case 22, the wind channel has air intake and at least one air outlet, the air intake with the air outlet intercommunication freeze-drying case 22 is provided with freeze-drying fan 23 on every air outlet, and similarly, be provided with liquid nitrogen entry 221 in every air outlet department.

In the use, the air intake is arranged in the freeze-drying tunnel and is close to the position of export, so, utilize the air intake can be further with the air of low temperature through wind channel 231 circulation transport to the first half in freeze-drying tunnel to the further freeze-drying treatment that utilizes low temperature air.

In order to improve the uniformity of the temperature distribution, an auxiliary fan 233 may be installed at a position opposite to the position where the freeze-drying fan 23 is installed in the freeze-drying tunnel, where the auxiliary fan 233 has the same structural form as the freeze-drying fan 23. Also, the auxiliary fan 233 and the freeze-drying fan 23 may be arranged in a staggered manner.

The auxiliary fan 233 on one surface and the liquid nitrogen injection inlet 221 on the other surface can be arranged relatively or in a staggered manner, so that the liquid nitrogen injected from the liquid nitrogen injection inlet 221 is changed into gaseous nitrogen from liquid state to gaseous nitrogen efficiently under the action of air flow generated by the auxiliary fan 233, and the uniformity of temperature distribution in the freeze-drying tunnel is improved.

In addition, an air outlet may be further disposed on the air duct 231, an air door 232 may be disposed on the air outlet, and an air outlet 234 may be disposed on the air inlet of the air duct 231. When it is required to discharge the cool air in the freeze-drying tunnel to the outside, the damper 232 is opened and the exhaust fan 234 is activated so that the air in the freeze-drying tunnel is output from the exhaust port via the air duct 231.

Still further, both ends of the lyophilization tank 22 are respectively provided with an air curtain machine 24, and the air curtain machine 24 is configured to form an air curtain at the port of the lyophilization tunnel.

Specifically, since the two ports of the freeze-drying tunnel are open structures, in order to avoid the leakage of low-temperature nitrogen gas inside, air curtain machines 24 are disposed at the two ends of the freeze-drying box 22, and the air curtain machines 24 are utilized to generate air curtains to block the freeze-drying tunnel from the external environment.

Based on the technical scheme, the tunnel type freeze-dried product production line can be further provided with a liquid storage component 1, a blanking component 3, a cleaning component 4, a drying component 5, a disinfection component 6 and a foot 8 according to design requirements;

the liquid storage assembly 1 comprises a liquid storage frame 11 and a liquid storage tank 12, wherein the liquid storage tank 12 is arranged on the liquid storage frame 11;

the blanking assembly 3 comprises a blanking frame 31 and a blanking plate 32, and the blanking plate 32 is arranged on the blanking frame 31;

the cleaning assembly 4 comprises a cleaning frame 41, a cleaning tank 42 and a spray head 43, wherein the cleaning tank 42 is arranged on the cleaning frame 41, and the spray head 43 is arranged in the cleaning tank 42;

the drying assembly 5 comprises a drying rack 51, a drying box 52, a heating pipe 53 and a heating fan 54, wherein the drying box 52 is arranged on the drying rack 51, and the heating pipe 53 and the heating fan 54 are arranged on the drying box 52;

the sterilizing module 6 includes a sterilizing rack 61 and a sterilizing box 62, the sterilizing box 62 being provided on the sterilizing rack 61;

wherein, footing 8 sets up respectively on stock solution subassembly 1, freeze-drying subassembly 2, unloading subassembly 3, cleaning subassembly 4, stoving subassembly 5 and disinfection subassembly 6, and circulation transfer chain 71 runs through the setting respectively in stock solution subassembly 1, freeze-drying subassembly 2, cleaning subassembly 4, stoving subassembly 5 and disinfection subassembly 6.

Specifically, the liquid storage tank 12 is arranged on the liquid storage frame 11, after the circulating conveying line 71 carries the mould 72 to the liquid storage tank 12, the mould 72 is immersed in the liquid storage tank 12, then the mould 72 is closed, and materials are contained in the mould 72, so that the material loading of the freeze-dried product raw materials is realized. And then the circulation conveying line 71 brings the die 72 into the freeze-drying box 22, nitrogen is filled into the freeze-drying box 22 to freeze-dry the raw materials, meanwhile, the freeze-drying fan 23 is arranged on the freeze-drying box 22, the freeze-drying fan 23 starts to work, the nitrogen in the freeze-drying box 22 is blown by the freeze-drying fan 23, the nitrogen circulates in the freeze-drying box 22, the nitrogen is fully utilized, the freeze-drying formation of the raw materials is facilitated, the energy is saved, and the freeze-drying of the raw materials is completed. The circulation conveyor line 71 conveys the molds 72 to the blanking plate 32, and the driving member 73 opens the molds 72, so that the products fall onto the blanking plate 32, and demolding and collecting of the freeze-dried products are realized. Then, the circulation conveyor line 71 conveys the mold 72 into the cleaning tank 42, the spray head 43 is arranged in the cleaning tank 42, the spray head 43 sprays water onto the mold 72 to automatically clean the mold, then, the circulation conveyor line 71 conveys the mold 72 into the drying tank 52, the heating pipe 53 and the heating fan 54 are arranged on the drying tank 52, the heating pipe 53 starts to work to dry the mold 72, meanwhile, the heating fan 54 blows the gas heated by the heating pipe 53, the gas heated by the heating pipe 53 starts to circulate in the drying tank 52 to dry the mold 72, then, the circulation conveyor line 71 conveys the mold 72 into the sterilizing tank 62, and an ultraviolet lamp is arranged in the sterilizing tank 62 to emit ultraviolet rays to sterilize the mold 72, so that the mold 72 is convenient to sterilize. Finally, the circulation conveyor line 71 brings the die 72 to the liquid storage tank 12 again, so that the next batch of freeze-dried products can be conveniently manufactured, and the production efficiency is improved.

Footing 8 sets up respectively on stock solution subassembly 1, freeze-drying subassembly 2, unloading subassembly 3, cleaning subassembly 4, stoving subassembly 5 and disinfection subassembly 6, be convenient for adjust stock solution subassembly 1, freeze-drying subassembly 2, unloading subassembly 3, cleaning subassembly 4, interval and the position between stoving subassembly 5 and the disinfection subassembly 6, thereby be convenient for adjust interval and the position between each process, be convenient for freeze-dried product's preparation, circulation transfer chain 71 sets up respectively on stock solution subassembly 1, freeze-drying subassembly 2, cleaning subassembly 4, stoving subassembly 5 and disinfection subassembly 6, circulation transfer chain 71 forms circulation structure between stock solution subassembly 1, freeze-drying subassembly 2, cleaning subassembly 4, stoving subassembly 5 and disinfection subassembly 6, be convenient for freeze-dried product's circulation preparation, and production efficiency is improved.

Further, a cleaning tank 42 is provided above the cleaning frame 41, and spray nozzles 43 are provided on both sides of the inner wall of the cleaning tank 42.

Specifically, when the mold 72 reaches the inside of the cleaning tank 42, the spray nozzles 43 are disposed at two sides of the inner wall of the cleaning tank 42, the mold 72 is still in an open state, and the spray nozzles 43 spray high-pressure water onto the mold 72 to clean the mold 72.

Further, a drying box 52 is provided above the drying rack 51, and heating pipes 53 are provided at both sides of the inner wall of the drying box 52.

Specifically, after the mold 72 is washed, the circulation line 71 conveys the mold 72 into the drying box 52, the heating pipe 53 starts to operate, and the heating pipe 53 dries the mold 72, so that the mold 72 is dried conveniently.

Further, a heating fan 54 is provided at one end of the drying box 52.

Specifically, the heating fan 54 is disposed at one end of the drying box 52, and the heating fan 54 blows the gas heated by the heating pipe 53 from one end of the drying box 52, so that the gas heated by the heating pipe 53 circulates in the drying box 52, thereby facilitating drying of the mold 72.

Further, the circulation line 71 is provided in a circulation structure and sequentially passes through the liquid storage tank 12, the freeze-drying tank 22, the blanking plate 32, the washing tank 42, the drying tank 52, and the sterilizing tank 62.

Specifically, circulation transfer chain 71 passes reservoir 12, freeze-drying case 22, flitch 32, washs case 42, stoving case 52 and disinfect box 62 in proper order, then wears to the reservoir 12 in, so circulation transfer chain 71 has formed circulation structure, and circulation transfer chain 71 can be with mould 72 circulation conveying between reservoir 12, freeze-drying case 22, flitch 32, washs case 42, stoving case 52 and disinfect box 62, and the circulation of being convenient for makes freeze-dried product, improves production efficiency.

Further, the circulation line 71 is bent downward at the reservoir 12 and passes through the reservoir 12.

Specifically, the circulation conveyor line 71 is bent downwards at the liquid storage tank 12 and penetrates through the liquid storage tank 12, the circulation conveyor line 71 conveys the mold 72 into the liquid storage tank 12, the mold 72 is completely immersed into the liquid storage tank 12, the first mold body 721 and the second mold body 722 are convenient to clamp raw materials, the raw materials are filled in the first mold body 721 and the second mold body 722, the raw materials are sealed in the first mold body 721 and the second mold body 722, and the freeze-dried products are convenient to manufacture.

Further, baffles are provided around the blanking plate 32.

Specifically, the blanking plate 32 is provided with baffles around, when the first mold body 721 and the second mold body 722 are opened, the freeze-dried product falls on the blanking plate 32, and the baffles on the blanking plate 32 prevent the freeze-dried product from falling, so that the freeze-dried product is convenient to collect.

The method comprises the steps of firstly placing raw materials into a liquid storage tank 12, conveying a first die body 721 and a second die body 722 through a circulation conveying line 71 into the liquid storage tank 12, controlling the first die body 721 and the second die body 722 to be closed through a driving component 73, enabling the raw materials to be sealed in the first die body 721 and the second die body 722, conveying the die 72 into a freeze-drying box 22 through the circulation conveying line 71, then injecting nitrogen into the freeze-drying box 22, simultaneously starting to work through a freeze-drying fan 23, blowing nitrogen in the freeze-drying box 22 at two ends of the freeze-drying box 22 to enable the nitrogen to circulate in the freeze-drying box 22, after the raw materials are freeze-dried and molded, conveying the die 72 above a blanking plate 32 through the circulation conveying line 71, controlling the first die body 721 and the second die body 722 to be opened through the driving component 73, enabling freeze-dried products to fall on the blanking plate 32, conveying the die 72 into a cleaning box 42 through the circulation conveying line 71, spraying high-pressure water onto the die 72 through a spray head 43, enabling the die 72 to be conveniently cleaned through the spray head 43, conveying the die 72 into a drying box 52, enabling a heating pipe 53 and a heating fan 54 to start to work, simultaneously, enabling the heating pipe 53 to dry the die 72 to be conveniently to be started, blowing nitrogen in the freeze-drying box 22, blowing the two ends of the freeze-drying box 22, blowing the nitrogen in the freeze-drying box, and enabling the nitrogen in the freeze-drying box to circulate in the drying box to be conveniently, and drying box 72, and at the time, and simultaneously, and enabling the air to be circulated in the drying box 53 and a circulation and a gas to be conveniently and a gas and a circulation and a gas and a high-drying box and a high quality material and a sterilizing material and a high quality is convenient to be and a high.

In the second embodiment, as shown in fig. 4 to 6, in order to realize automatic opening and closing of the mold 72, the requirement of continuous production is met.

The mold comprises a mounting seat 723, a first mold body 721 and a second mold body 722, wherein the upper end part of the first mold body 721 and the upper end part of the second mold body 722 are respectively and rotatably arranged on the mounting seat 723, mold grooves 720 are respectively formed on opposite surfaces of the first mold body 721 and the second mold body 722, the two mold grooves 720 form a mold cavity when being buckled relatively, and the mounting seat 723 is arranged on the moving part 711;

the transfer assembly 7 also includes a drive member 73 disposed on the first and second die bodies 721, 722 and configured to drive rotation of the first and second die bodies 721, 722.

Specifically, in the actual use process, the moving member 711 on the circulation conveyor line 71 can move circularly along the extending track of the circulation conveyor line, so as to drive the mold to follow the circulation movement.

For the mold, it is assembled by a first mold body 721 and a second mold body 722 that can be opened and closed. The mold grooves 720 formed in the two mold bodies can form mold cavities to correspondingly mold products of corresponding shapes after the two mold bodies are closed. Because the first mold body 721 and the second mold body 722 can relatively rotate to realize opening and closing actions, in actual use, automatic material injection is realized by closing the first mold body 721 and the second mold body 722, and after freeze-drying is finished, automatic demolding can be realized by opening the first mold body 721 and the second mold body 722.

In a specific use process, the driving force for opening and closing the first mold body 721 and the second mold body 722 comes from the driving part on the mold, and the driving part drives the two mold bodies to automatically open and close under the specific process requirements.

For example: when automatic material injection is needed, the moving part 71 drives the die to move into a liquid storage tank filled with the material, and then the driving part drives the two die bodies to be closed, so that the material is stored in a die cavity formed by the die. And after the freeze-drying operation is finished, the driving part drives the two mold bodies to rotate and open so as to automatically demold and output products in the mold cavity, thereby realizing automatic operation and reducing manual participation.

Through adopting annular structure's circulation transfer chain to realize can circulate and drive the mould and remove in the use, and to the mould, the mould is installed on the removal part of circulation transfer chain, in order to satisfy mould circulation removal's requirement, and the mould then can be according to the technology needs of different positions by drive part drive first die body and second die body closure or open in the removal process, and in actual use, after the mould moves into the reservoir, drive part will drive two die bodies closure, so that liquid material is located the model groove of relative arrangement, circulation transfer chain will drive two die bodies of closure and enter into the freeze-drying case in order to realize carrying out freeze-drying to the material in the reservoir and handle, and the die body exports the required product of shape of freeze-drying form in the model groove, and drive through drive part again makes two die bodies automatic opening, and then accomplish the automatic demoulding of product, realize conveying assembly automatic switch mould in order to reach serialization production efficiency, and then improve production efficiency.

Further, a rotation shaft (not shown) is provided on the mounting seat 723, and upper end portions of the first mold body 721 and the second mold body 722 are rotatably provided on the mounting seat 723, respectively, through the rotation shaft.

Specifically, the first mold body 721 and the second mold body 722 are mounted through the rotating shaft by arranging the rotating shaft on the mounting seat 723, so that the first mold body 721 and the second mold body 722 can reliably rotate to meet the opening and closing requirements.

In addition, since the first mold body 721 and the second mold body 722 are disposed on the mounting seat 723 through the rotation shaft, the two mold bodies can be integrally rocked with respect to the mounting seat 723 after being combined.

Still further, the driving part includes a first permanent magnet 731 and a second permanent magnet 732, the first permanent magnet 731 being disposed on the first mold body 721 and the second permanent magnet 732 being disposed on the second mold body 722;

the circulating conveyor line further comprises an annular conveyor chain and a driving mechanism, wherein the annular conveyor chain is slidably arranged on the annular sliding rail, the driving mechanism is configured to drive the annular conveyor chain to slide on the annular sliding rail, a moving part 711 is arranged on the annular conveyor chain, a first electromagnet 712 is arranged on one side of the annular sliding rail, and a second electromagnet 713 is arranged on the other side of the annular sliding rail; the first electromagnet is configured to generate a magnetic force with the underlying first permanent magnet 731, and the second electromagnet is configured to generate a magnetic force with the underlying second permanent magnet 732.

Specifically, in order to satisfy the requirement that the moving member 711 drives the mold 72 to move circularly, an annular conveying chain capable of running circularly is arranged in the annular sliding rail, and correspondingly, the annular conveying chain is driven to rotate circularly through a driving mechanism. The driving mode of the driving mechanism to drive the endless conveyor chain can be realized by driving a chain wheel by a motor, and the driving mode of the conveyor chain in the conventional technology can be specifically referred to, and the driving mode is not limited herein.

And by configuring an electromagnet at the position corresponding to the annular sliding rail of the circulating conveying line, the driving part adopts a permanent magnet mode, and repulsive force is generated between the electromagnet and the permanent magnet when the die moves to the liquid storage tank, so that the first die body 721 and the second die body 722 are combined to further realize that the two die grooves 720 are buckled relatively together to form a die cavity. The repulsive force generated between the electromagnet and the permanent magnet can meet the condition that the die is in a closed state and enters the freeze-drying box for freeze-drying treatment.

When the mold is output from the freeze-drying box, the electromagnet can apply magnetic attraction to the permanent magnet, so that the mold is opened. Preferably, in order to reliably release the molded product from the mold, guide rods 714 may be provided on both sides of the annular slide rail, and the guide rods 714 may have an arc-shaped structure. Meanwhile, upper ends of the first mold body 721 and the second mold body 722 are respectively provided with the columns 74. For the mold output from the freeze-drying box, the front end of the guide rod 714 will protrude inside the upright 74 on the corresponding side. As the mold follows the moving member 711, the guide rods 714 of the arcuate configuration will abut the posts 74 to allow the first and second mold bodies 721, 722 to be guided by the guide rods 714 for reliable opening, ensuring smooth demolding of the product in the mold.

Still further, a return spring (not shown) is disposed between the first die body 721 and the second die body 722. Specifically, the return spring will apply a spring force to the first die body 721 and the second die body 722 such that there is a dynamic tendency for the first die body 721 and the second die body 722 to move away from each other. Under the action of the return spring, the first mold body 721 and the second mold body 722 can be ensured to be effectively kept in an open state after being opened, and then when a product in a separate mold is stuck on one of the mold bodies, the cleaning is convenient for manual work.

Preferably, to optimize the lyophilization effect, the first mold body 721 and the second mold body 722 are heat conductors. Also, in order to optimize the mold release smoothness and reduce the adhesion of the material to the outer surfaces of the first mold body 721 and the second mold body 722, a hydrophobic coating (not shown) is provided in the mold groove 720.

The material of the mold 72 may be made of an aluminum plate, a hydrophobic coating is coated on the mold 72, the first mold body 721 and the second mold body 722 are rotatably arranged on the circulation conveyor line 71, when the first mold body 721 and the second mold body 722 reach the liquid storage tank 12, the first mold body 721 and the second mold body 722 are closed, the material is sealed in the first mold body 721 and the second mold body 722, the material is conveniently fed into the freeze-drying box 22 for freeze-drying, when the first mold body 721 and the second mold body 722 reach the blanking plate 32, the first mold body 721 and the second mold body are opened, and the freeze-dried product after freeze-drying falls on the blanking plate 32. When the freeze-dried products with different shapes are required to be produced, the mold with other shapes is replaced, so that various freeze-dried products can be conveniently produced.

In another embodiment, in order to facilitate the disassembly and assembly of the mold to replace the mold of a different specification, a jig (not shown) is provided on the moving member 711, and the jig grips the mount 723.

Specifically, the mold is mounted on the moving member 711 by a jig, and when the mold needs to be replaced, the replacement operation of the mold can be completed by opening the jig. For the specific structural form of the clamp, reference may be made to the structural form of the clamp used in conventional industrial production, such as a mechanical clamp or a suction cup hand, which is not limited herein.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. A tunnel freeze-dried product production line, comprising:

the freeze-drying assembly comprises a freeze-drying box and a freeze-drying fan, a freeze-drying tunnel is formed in the freeze-drying box, a plurality of liquid nitrogen spraying inlets are arranged in the freeze-drying tunnel, the liquid nitrogen spraying inlets are sequentially arranged along the length direction of the freeze-drying tunnel, and the freeze-drying fan is arranged on the freeze-drying box and located in the freeze-drying tunnel;

the conveying assembly comprises a circulating conveying line and a die, the circulating conveying line is of an annular structure, a moving part capable of moving circularly is arranged on the circulating conveying line, and the die is arranged on the moving part;

wherein, circulation transfer chain runs through freeze-drying tunnel.

2. The tunnel type freeze-dried product production line according to claim 1, wherein the freeze-drying fan comprises a motor and a metal blade, the motor is located outside the freeze-drying tunnel and arranged on the freeze-drying box, a rotating shaft of the motor extends into the freeze-drying tunnel, and the metal blade is arranged on the rotating shaft and located in the freeze-drying tunnel.

3. The tunnel type freeze-dried product production line according to claim 1, wherein a plurality of freeze-drying fans are provided on the freeze-drying box along a length direction of the freeze-drying tunnel.

4. The tunnel type freeze-dried product production line according to claim 1, wherein both ends of the freeze-drying box are respectively provided with an air curtain machine configured to form an air curtain at a port of the freeze-drying tunnel.

5. The tunnel type freeze-dried product production line according to claim 1, wherein a plurality of the liquid nitrogen injection ports are respectively provided on opposite sides of the freeze-drying tunnel.

6. The tunnel type freeze-dried product production line according to any one of claims 1 to 5, wherein the mold comprises a mounting seat, a first mold body and a second mold body, an upper end portion of the first mold body and an upper end portion of the second mold body are rotatably provided on the mounting seat, mold grooves are formed on opposite faces of the first mold body and the second mold body, respectively, two mold grooves form a mold cavity when being fastened relatively, and the mounting seat is provided on the moving part;

the transfer assembly further includes a drive member disposed on the first mold body and the second mold body and configured to drive rotation of the first mold body and the second mold body;

the tunnel freeze-dried product production line further comprises a liquid storage tank configured to store liquid material with freeze-drying; the liquid storage tank is arranged on one side of the freeze-drying box, and part of the circulating conveying line is positioned right above the liquid storage tank.

7. The tunnel type freeze-dried product production line according to claim 6, wherein a rotating shaft is arranged on the mounting seat, and upper ends of the first die body and the second die body are rotatably arranged on the mounting seat through the rotating shaft respectively.

8. The tunnel lyophilized product line of claim 6, wherein the drive component comprises a first permanent magnet disposed on the first mold body and a second permanent magnet disposed on the second mold body;

the circulating conveyor line further comprises an annular sliding rail, the moving part is slidably arranged on the annular sliding rail, a first electromagnet is arranged on one side of the annular sliding rail, and a second electromagnet is arranged on the other side of the annular sliding rail; the first electromagnet is configured to generate magnetic force with the first permanent magnet below, and the second electromagnet is configured to generate magnetic force with the second permanent magnet below.

9. The tunnel lyophilized product line of claim 7, wherein a return spring is disposed between the first mold body and the second mold body.

10. The tunnel lyophilized product line of claim 6, wherein the first mold body and the second mold body are heat conductors; and/or the model groove is provided with a hydrophobic coating.