CN211625879U

CN211625879U - Continuous processing type freeze drying system

Info

Publication number: CN211625879U
Application number: CN202020210668.XU
Authority: CN
Inventors: 吴建农; 刘意强; 叶玉芬; 田严华; 朱悉汝; 毛海盈; 夏小均; 姜亨鲁
Original assignee: Zhejiang Starvegetable Agriculture Technology Co ltd
Current assignee: Zhejiang Starvegetable Agriculture Technology Co ltd
Priority date: 2020-02-26
Filing date: 2020-02-26
Publication date: 2020-10-02
Anticipated expiration: 2030-02-26

Abstract

A continuous process freeze drying system comprising: the feeding device comprises a transition bin for continuously feeding material trays bearing materials into the freeze drying bin; and the feeding device comprises a lifting device which is used for continuously and circularly feeding the trays from the transition bin to the drying and heating device of the freeze drying bin. According to the utility model discloses a continuous processing formula freeze drying system, because the freeze drying storehouse has been equipped with pan feeding device and discharging device to be equipped with the material feeding unit who takes elevating gear in the storehouse, the event can be realized automaticly by the discrepancy material of processing material, has improved the stability of production, has alleviateed intensity of labour. Moreover, the continuous and circular operation process flow is adopted by the feeding device, so that the uninterrupted production of freeze-dried products is realized, the production efficiency of freeze-drying equipment is improved, the rotation times of materials are reduced, the contact time of the materials and the outside is shortened, and the quality of the freeze-dried products is improved.

Description

Continuous processing type freeze drying system

Technical Field

The utility model relates to a freeze drying system especially relates to a continuous processing formula freeze drying system.

Background

The freeze drying equipment, also called vacuum freeze drying equipment or freeze drying equipment for short, is to freeze food, medicine and other material below its eutectic point temperature to change the water content into solid ice, and then to make the ice rise into water vapor directly in vacuum environment, and then to condense the water vapor with a water catcher to finally dry the product. Fig. 1A shows a vacuum drying chamber of a freeze drying apparatus in the prior art, and fig. 1B shows a skip 21 loaded in the chamber and trays 22 layered on the skip 21. According to the heating volume of the bin body, materials with corresponding quantity can be sent into the bin body for vacuum drying at one time, all the materials are cooled through the quick-freezing tunnel, the temperature of the materials is lower than the eutectic point of the materials, and then the vacuum drying process is adopted, so that the moisture in the materials is directly sublimated into gaseous state from the solid state to be rapidly evaporated. The formed freeze-dried product is spongy, has no drying shrinkage, good rehydration property and extremely low moisture content, maintains the original structural performance and nutritional ingredients of the product, and can be preserved and transported for a long time at normal temperature after being correspondingly packaged.

However, the freeze-drying apparatus shown in fig. 1A and 1B has a great difficulty in loading and unloading the material because the material to be freeze-dried needs to be loaded into the vacuum drying chamber by the material cart 21, the empty height of the material cart 21 is high, and the operator needs to put the material tray 22 on the upper position of the material cart 21. In addition, the depth of the vacuum drying bin of the conventional freeze-drying equipment is about more than ten meters, and the internal space is long and narrow, so that the skip 21 needs to be manually pushed into the quick-freezing tunnel and the equipment, thereby enhancing the labor intensity of operators. Further, the existing freeze-drying equipment has no continuous processing capability, all materials need to be fed into a vacuum drying bin at one time, then a heating and drying procedure is started, and due to the fact that preheating and precooling processes are carried out when the equipment is started, energy waste of the whole equipment is caused.

The patent application No. 201010193543.1 of the Chinese invention shown in fig. 2A and 2B discloses a vacuum freeze-drying bin for processing freeze-dried food, which comprises a bin body 1-1, a material vehicle guide rail 1-2 fixed on the top of the bin body, two rows of multilayer heating plates 1-4 arranged in the bin body, and a material vehicle walking passage reserved between the two rows of heating plates. The material trolley loaded with the material tray can enter the bin body 2-1 along the guide rail 1-2.

The patent application No. 201510017464.8 of the Chinese invention shown in fig. 2C and 2D discloses an integrated radiation vacuum freeze-drying device for processing food, which comprises a bin body 1, wherein vertical side brackets 12 are fixed in the bin body, the brackets extend out of heating shelves 13, an accommodating interval of a skip 14 is formed between the heating shelves at two sides, the skip comprises a vertical suspension 42, a horizontal tray 43 extends out of the vertical suspension, and when the skip is pushed into the bin body, the horizontal tray on the suspension of the skip is just positioned between two adjacent horizontal heating shelves.

However, the chinese patent applications 201010193543.1 and 201510017464.8 all use a skip car to feed the material into the vacuum drying chamber, and the feeding and discharging of the material are also difficult. In addition, the internal space of the cabin is narrow and long, and the skip car also needs to be pushed into the equipment. Moreover, both of them also do not have the capability of continuous processing, and all the materials need to be fed into a vacuum drying bin at a time, and then a heating and drying process is started. Particularly, the bin door of the material car filled with the material tray must be opened when the material car enters or exits the vacuum drying bin every time, and an operator needs to intensively load and unload a plurality of material cars into or out of the bin body, so that the problems that the personnel are excessively concentrated, the operating space is limited, mutual interference is easily caused, the environmental humidity is large in floating and the like exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the defect that prior art exists, provide a continuous processing formula freeze-drying system to solve the above-mentioned technical problem that exists among the prior art.

According to the utility model discloses, a continuous processing formula freeze-drying system is provided, include:

the feeding device comprises a transition bin for continuously feeding material trays bearing materials into the freeze drying bin;

the feeding device comprises a lifting device used for continuously and circularly feeding the trays from the transition bin to the drying and heating device of the freeze drying bin,

the transition bin comprises a front transition bin and a rear transition bin, wherein the front transition bin can continuously receive the charging trays, and the rear transition bin is used for transferring the charging trays from the front transition bin to the feeding device.

The post-transition bin is positioned in the freeze drying bin.

The system also comprises a vacuum isolating device arranged in the transition bin.

The vacuum partition device comprises an air breaking electromagnetic valve arranged in the front transition bin, a vacuumizing electromagnetic valve arranged in the rear transition bin and a pneumatic device linked with the air breaking electromagnetic valve and the vacuumizing electromagnetic valve.

The vacuum partition device also comprises a partition baffle plate for enabling the material tray to pass through or not pass through, and the pneumatic device is connected with the partition baffle plate through a joint bearing.

The lifting device comprises a lifting platform, wherein a feeding mechanical arm is arranged on the lifting platform and used for continuously and circularly conveying a material tray positioned on the table surface of the lifting platform to the heating plate of the drying and heating device.

And a material tray conveying and positioning mechanism and a rolling bearing are arranged on the edge of the heating plate.

The bevel edge that slopes upwards is designed on the edge of charging tray, the bevel edge can pass through charging tray conveying positioning mechanism movably sets up antifriction bearing is last.

The system adopts freeze drying equipment with double-side alternating cold traps.

The material is food or medicine.

According to the utility model discloses a continuous processing formula freeze drying system and method, because the freeze drying storehouse has been equipped with pan feeding device and discharging device to be equipped with the material feeding unit who takes elevating gear in the storehouse, the event is expected to realize automaticly by the discrepancy of processing material, has improved the stability of production, has alleviateed intensity of labour. And, because pan feeding and material feeding unit adopt the continuous and endless operation process flow, so the supplies need not to open the door when entering the storehouse and delivering from the storehouse, have realized the incessant production of the freeze-dried product, has improved the production efficiency of the freeze-drying apparatus, and reduced the cycle number of the supplies, reduced the time that the supplies contact with the outside, have improved the quality of the freeze-dried product.

Drawings

The embodiments of the invention will be described for a better understanding of the invention by reference to the accompanying drawings, in which:

fig. 1A is a schematic view showing a vacuum drying chamber body of a freeze drying apparatus of the prior art.

Fig. 1B is a schematic view showing the skip loaded in the silo of fig. 1A and the trays layered on the skip.

Fig. 2A and 2B are schematic views showing a prior art vacuum freeze-drying chamber for processing freeze-dried foods.

Fig. 2C and 2D are schematic diagrams illustrating an integrated radiation vacuum freeze-drying apparatus for processing food according to the prior art.

Fig. 3 is an overall schematic view showing a continuous processing type freeze-drying system according to the present invention.

FIG. 4 is a schematic view of a material feed end of the system of FIG. 3.

Fig. 5A is a schematic view showing the feeding device shown in fig. 4.

Fig. 5B is a top view of the feeding device shown in fig. 5A.

Fig. 5C is an enlarged view of a portion of the feeding device shown in fig. 5A.

Fig. 5D is a schematic view of a transition bin of the feeding device shown in fig. 5A.

FIG. 6 is a schematic view of a vacuum isolation apparatus of the feeding apparatus of FIG. 4.

FIG. 7 is a schematic view of one of the partition baffles of the vacuum partition device of FIG. 6.

Fig. 8A and 8B are schematic views each showing a roller seal of the vacuum blocking apparatus of the feeding apparatus shown in fig. 6.

FIG. 9 is a schematic diagram showing an elevator at the feed end of the system of FIG. 4.

Fig. 10 is a schematic view showing the lifting device shown in fig. 9 pushing the tray to the drying and heating device.

Fig. 11 is a schematic view showing the tray shown in fig. 10 being pushed onto a heating plate of a drying and heating apparatus.

Fig. 12 is a schematic perspective view of the tray of fig. 10.

Fig. 13 to 15 are operation flow charts showing a continuous processing type freeze-drying system according to the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the following will combine the specific embodiments of the present invention and the corresponding drawings to perform clear descriptions on the technical solutions of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Fig. 3 is an overall schematic view showing a continuous processing type freeze-drying system according to the present invention, and fig. 4 is a schematic view of a material feeding end of the system shown in fig. 3. With reference to fig. 3 and 4, the continuous processing type freeze drying system according to the present invention includes a feeding device, the feeding device includes a front transition bin for continuously feeding material trays carrying materials into a freeze drying bin, and a rear transition bin for transferring the material trays from the front transition bin to a feeding device, the rear transition bin is located in the freeze drying bin; and the feeding device comprises a lifting device which is used for continuously and circularly distributing the material trays from the rear transition bin to the drying and heating device of the freeze drying bin. Specifically, the freeze drying chamber 30 includes a feeding end 31 and a discharging end 32. A feeding device 311 and a discharging device 321 are respectively arranged on two sides of the feeding end 31 and the discharging end 32, and the tray loaded with the material is fed into the bin 30 through the feeding device 311. The interior of the cartridge body 30 is provided with a drying and heating device 34 including a plurality of stacked heating plates 341.

As shown in fig. 4, the continuous processing type freeze drying system according to the present invention, for example, employs a freeze drying apparatus of a double-side alternating cold trap, which cooperates with alternating refrigeration water trapping and defrosting drainage, so as to realize continuous and uninterrupted production of freeze-dried products. Because the freeze-drying equipment adopting the alternating cold traps can perform alternating defrosting according to different process designated time of various articles including food, namely, the cold trap on one side performs refrigeration and water capture, and the cold trap on the other side performs defrosting and water drainage, the freeze-drying efficiency is higher than that of the traditional equipment only adopting a single cold trap, and a continuous processing type freeze-drying system is realized.

Fig. 5A is a schematic diagram illustrating the feeding device 311 shown in fig. 4, fig. 5B is a top view of the feeding device 311 shown in fig. 5A, fig. 5C is a partially enlarged view of the feeding device 311 shown in fig. 5A, and fig. 5D is a schematic diagram of a transition bin of the feeding device 311 shown in fig. 5A. Referring to fig. 5A to 5D, bin gates 501 are disposed on two sides of the transition bin 5 of the feeding device 311 for passing through the material trays carrying the materials. The transition bin 5 comprises a forward transition bin 51 and an aft transition bin 52. A driving roller 53 and a plurality of driven rollers 54 are arranged on the bottom side of the front transition bin 51 and are used for driving a carrying tray (not shown). The driving roller 53 is driven to rotate by, for example, a servo motor 55 and a coupling 56, and an o-belt 542 is provided on the driven roller 54, and the latter is linked to the driving roller 53 via the o-belt 542. Preferably, a tension pulley 55 is further provided on the o-belt, and the o-belt is always tensioned by the tension pulley 55 to ensure that the tray can be in close contact with the roller. The bottom side of the rear transition bin 52 is also provided with driven rollers 54, for example, a belt coupling the rollers 54 adjacent the front transition bin 51 and the driving rollers 53 together to facilitate the transfer of the trays from the front transition bin 51 to the rear transition bin 52.

FIG. 6 is a schematic view of a vacuum isolation apparatus of the feeding apparatus shown in FIG. 5A, and FIG. 7 is a schematic view of an isolation baffle of the vacuum isolation apparatus shown in FIG. 6. Referring to fig. 5A, 6 and 7, the vacuum isolating device includes an air breaking solenoid valve 57 disposed at one side of the front transition bin 51, and a vacuum pumping solenoid valve 58 disposed at one side of the rear transition bin 52. The function of the air breaking electromagnetic valve 57 is to ensure that the pressure in the front transition bin 51 keeps balanced with the external atmospheric pressure, and ensure that the cylinder A can be normally opened; the rear transition bin 52 is directly connected with the bin body 30, the vacuumizing electromagnetic valve 58 opens the air cylinder B after the internal pressure of the front transition bin 51 and the rear transition bin 52 is balanced, and materials are fed into the bin body 30.

The vacuum partition of fig. 6 also includes a pneumatic device including, for example, a cylinder a disposed at one side of the front transition bin 51, and a cylinder B disposed between the front transition bin 51 and the rear transition bin 52. The cylinder B is connected to a partition plate 50, for example, by a joint bearing 59, and when the pneumatic solenoid valve controls the air inlet and outlet of the cylinder B, the piston rod of the cylinder B moves to lift or lower the partition plate 50. Therefore, the matching of the feeding process and the freeze-drying production environment can be realized through the matching action of the electromagnetic valve, the pneumatic device and the pressure balancing device. Specifically, before the tray carrying the materials is sent into the bin body 30 of the freeze drying bin, the control cylinder B is closed in advance, the partition baffle 50 is put down in advance, and the air breaking electromagnetic valve 57 is opened, so that the front transition bin 51 completes air breaking. Next, the control cylinder a is opened and the tray enters the front transition bin 51. After the tray enters, the cylinder A is controlled to be closed, the air breaking electromagnetic valve 57 is closed, then the vacuumizing electromagnetic valve 58 is opened, and air in the front transition bin 51 is pumped out by a vacuum pump of the freeze drying bin and is balanced with air in the rear transition bin 52. Then, the control cylinder B is opened, the partition baffle 50 is lifted, the servo motor 55 is started simultaneously, and the tray is transferred from the front transition bin 51 to the rear transition bin 52. In a preferred embodiment, baffle gaskets 50' are provided around the periphery of the opening where the partition baffles 50 are provided, for example, in the transition bin.

Fig. 8A and 8B are schematic views each showing a roller seal of the vacuum blocking apparatus of the feeding apparatus shown in fig. 6. Referring to fig. 8A and 8B in combination, for example, a rotary sealing flange 80 is provided at the position where the driving roller 53 and the driven roller 54 are close to the joint of the front transition bin 51 and the rear transition bin 52, respectively, and a sealing o-ring 801 is provided at the inner side of the flange 80, which has the same function as the baffle plate sealing pad 50' described above, so as to ensure the stability of the vacuum environment of the freeze-drying apparatus.

Fig. 9 is a schematic view showing a lifting device at a feeding end of the continuous processing type freeze-drying system shown in fig. 4, and fig. 10 is a schematic view showing the lifting device shown in fig. 9 pushing a tray to a drying and heating device. Referring to fig. 9 and 10 in combination, a lifting device 90 is disposed in the feeding end 31 of the freeze-drying chamber 30, and includes, for example, a lifting table 91, a linear bearing mechanism 92 for supporting the lifting table 91 to move vertically, and a movable rod 93. The lifting device 90 further comprises a servo motor and a speed reducer 94, a lifting chain 96 is driven by a driving shaft 95, and the up-and-down operation of the lifting platform 91 is controlled by a linkage shaft 97. The elevating platform 91 is provided with, for example, a feeding cylinder 98 and a feeding robot 99, and the freeze drying chamber body 30 is provided therein with a drying and heating device 34 including a plurality of stacked heating plates 341. When the tray 10 carrying the material to be processed is conveyed from the feeding device 311 to the top of the lifting table 91, the feeding cylinder 98 may drive the feeding robot 99 to push the tray 10 forward onto the heating plate 341 of the drying and heating device 34.

According to the utility model discloses a continuous processing formula freeze drying system, the dry heating device 34 that sets up in storehouse body 30 is including the range upon range of hot plate 341 of multilayer, and after the charging tray 10 on elevating platform 91 with the mesa sent into dry heating device 34's first layer hot plate 341, continued the lift action to send subsequent charging tray 10 into to second floor heating plate 341, analogize and the circulation operation with this. The material fed into the drying and heating device 34 is dried and heated in the bin 30 for a long time and then finally discharged from the discharge end 32 of the freeze drying bin. Because the discharging end 32 is provided with the discharging device 321 with the same structure as the feeding device 311 of the feeding end 31, the material can enter a packaging workshop for packaging through the discharging device 321 after the freeze-drying production is completed.

Fig. 11 is a schematic view showing that the tray 10 shown in fig. 10 is pushed onto the heating plate 341 of the drying and heating device 34, and fig. 12 is a schematic perspective view showing the tray 10 shown in fig. 10. Referring to fig. 11 and 12 in combination, the tray 10 is designed with an upwardly inclined bevel 101, for example, on the edge along its length, and the heating plate 341 is provided with a tray conveying positioning mechanism, for example, on the edge along its length, which includes, for example, a [ shaped positioner 3412 and a rolling bearing 3414 located inside the [ shaped positioner 3412 ]. When the tray 10 is fed onto the heating plate 341, the inclined edge 101 thereof can be inserted into the gap between the upper edge of the positioning unit 3412 and the rolling bearing 3414, and gradually pushed toward the discharging end of the bin 30 along with the pushing of the feeding robot 99 and the rolling of the rolling bearing 3414. After the materials are processed in the bin body 30 for a sufficient time, the materials are discharged from the discharge end of the bin body 30.

Fig. 13 to 15 are operation flow charts showing a continuous processing type freeze-drying system according to the present invention. Referring to fig. 13 to 15 in combination, the operation process of the continuous processing type freeze drying system according to the present invention includes the steps of: A. continuously feeding the material trays carrying the processed materials into a transition bin of a freeze drying bin, wherein the transition bin comprises a front transition bin and a rear transition bin; B. and the trays from the transition bin are continuously and circularly sent to a drying and heating device of the freeze drying bin. Wherein, step A further includes: A1. separating the front transition bin and the rear transition bin by a vacuum separation device; A2. enabling the material tray to enter a front transition bin; A3. closing a bin door of the front transition bin; A4. opening a vacuum-pumping electromagnetic valve, and pumping air in the front transition bin away through a vacuum pump of the freeze drying bin; A5. opening the front transition bin and the rear transition bin through a vacuum partition device; A6. and transferring the material tray from the front transition bin to the rear transition bin. Wherein, step B further includes: B1. the lifting device is used for continuously feeding the trays from the transition bin into the freeze drying bin; B2. and continuously and circularly distributing the material trays to the multilayer heating plates of the drying and heating device through a material feeding mechanical arm on the lifting device. A continuous processing freeze drying system according to the present invention, the system being configured with a processor for performing the method as described above.

According to the concept of the present invention, a person skilled in the art can also make various changes and modifications thereto, but these changes and modifications are all within the scope of the claims of the present invention.

Claims

1. A continuous process freeze drying system comprising:

2. The system of claim 1, wherein the post-transition bin is located within a bin of the freeze-drying bin.

3. The system of claim 2, further comprising a vacuum isolation device disposed within the transition bin.

4. The system of claim 3, wherein the vacuum isolation means comprises a break-empty solenoid valve disposed at the front transition bin, a vacuum solenoid valve disposed at the rear transition bin, and a pneumatic means cooperating with the break-empty solenoid valve and the vacuum solenoid valve.

5. The system of claim 4, wherein the vacuum isolation device further comprises an isolation baffle plate for allowing the tray to pass or not pass, and the pneumatic device is connected with the isolation baffle plate through a joint bearing.

6. The system of claim 1, wherein the lifting device comprises a lifting table having a feeding robot disposed thereon for continuously and cyclically feeding the trays on the table top to the heating plate of the drying and heating device.

7. The system of claim 6, wherein the heating plate is provided with a tray conveying positioning mechanism and a rolling bearing on the edge.

8. The system of claim 7, wherein the edge of the tray is designed with an inclined edge that is inclined upward and is movably disposed on the rolling bearing by the tray transfer positioning mechanism.

9. The system of claim 1, wherein the system employs a freeze drying apparatus with double-sided alternating cold traps.

10. The system of claim 1, wherein the material is a food or pharmaceutical product.