CN211768141U

CN211768141U - Continuous feeding device of freeze-drying equipment

Info

Publication number: CN211768141U
Application number: CN202020210953.1U
Authority: CN
Inventors: 吴建农; 刘意强; 叶玉芬; 田严华; 朱悉汝
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: 2020-10-27
Anticipated expiration: 2030-02-26

Abstract

The utility model provides a freeze-drying equipment's continuous material feeding unit, includes the transition bin that is used for sending into the charging tray that bears the weight of the material in succession the freeze-drying storehouse, the transition bin is including can receiving in succession the preceding transition bin of charging tray to and be used for with coming the charging tray in preceding transition bin forwards into the inside back transition bin in freeze-drying storehouse. According to the utility model discloses, owing to be equipped with the continuous material feeding unit who has vacuum off device at the feed end in freeze-drying equipment's freeze-drying storehouse, so the material need not to open the door when advancing the storehouse and delivering from the storehouse, and can realize continuous automation by the discrepancy material of processing material, realized the uninterrupted production of freeze-drying product, improved freeze-drying equipment's production efficiency, and reduced the number of times of the rotation of material, reduced the time of material with external contact, improved the quality of freeze-drying product.

Description

Continuous feeding device of freeze-drying equipment

Technical Field

The utility model relates to a freeze-drying equipment especially relates to a freeze-drying equipment's continuous material feeding unit.

Background

Vacuum freeze drying equipment, or freeze drying equipment for short, is to freeze food, medicine and other material below the eutectic point temperature to change the water content into solid ice, and then to sublimate the ice into water vapor in vacuum environment, and then to condense the water vapor with a water catcher to dry the product. The utility model discloses a chinese utility model patent application 201510017464.8 that figure 1 and figure 2 show discloses a vacuum freeze-drying equipment of processing food, including the storehouse body 1, the internal portion in storehouse is fixed with vertical side support 12, and the support stretches out heating shelf 13, forms the holding interval of skip 14 between the both sides heating shelf, and the skip includes vertical suspension 42, extends horizontal charging tray 43 on the vertical suspension, and when the skip was pushed into the internal portion in storehouse, horizontal charging tray on the skip suspension just in time was located between two adjacent horizontal heating shelves. During processing, food materials to be freeze-dried are spread on the material tray and then transferred to the skip car, and are conveyed into the bin body 1 by means of the hanging skip car hung on the hanging rails 1-4. 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. 1 and 2 firstly needs to use the skip car to send the material to be freeze-dried into the vacuum drying chamber, and the clearance height of the skip car is high, and the operator needs to put the tray into the upper position of the skip car, so the difficulty of loading and unloading the material is considerable. Particularly, the bin door of the skip car filled with the material tray must be opened when the skip car enters or exits the vacuum drying bin every time, and an operator needs to intensively convey a plurality of skip cars into or out of the bin body, so that the problems that the operators are excessively concentrated, the operation space is limited, mutual interference is easily caused, the environmental humidity is large in floating and the like exist. In summary, the conventional freeze-drying equipment has no continuous processing capability, and it needs to feed all the materials into a vacuum drying chamber at one time and then start a heating and drying process, and because the equipment is started, preheating and precooling processes are performed, energy waste of the whole equipment is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the defect that prior art exists, provide a freeze-drying equipment's continuous material feeding unit, include the transition storehouse that is used for sending into the charging tray that will bear the weight of the material in succession freeze-drying storehouse, the transition storehouse is including receiving in succession the preceding transition storehouse of charging tray to and be used for coming from the charging tray of preceding transition storehouse forwards and advances the inside back transition storehouse in freeze-drying storehouse, be provided with the vacuum off device in the transition storehouse.

The post-transition bin is positioned in the bin body of the freeze-drying 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 which is matched with the air breaking electromagnetic valve and the vacuumizing electromagnetic valve to act.

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 bottom side of the front transition bin is provided with a driving rolling shaft and a driven rolling shaft, and the bottom side of the rear transition bin is provided with a driven rolling shaft.

The driving roller and the driven roller are linked through an O-shaped belt.

The O-shaped belt is provided with a tension pulley 55

And rotary sealing flanges are arranged on the outer sides of the driving rolling shaft and the driven rolling shaft exposed out of the wall of the transition bin.

The device is arranged at the feed end and/or the discharge end of a freeze-drying bin of the freeze-drying equipment.

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

According to the utility model discloses, owing to be equipped with the continuous material feeding unit who has vacuum off device at the feed end in freeze-drying equipment's freeze-drying storehouse, so the material need not to open the door when advancing the storehouse and delivering from the storehouse, and can realize continuous automation by the discrepancy material of processing material, realized the uninterrupted production of freeze-drying product, improved freeze-drying equipment's production efficiency, and reduced the number of times of the rotation of material, reduced the time of material with external contact, improved the quality of freeze-drying 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. 1 and 2 are schematic views showing a vacuum freeze-drying apparatus for processing food according to the prior art.

Fig. 3 is a schematic view showing that the continuous feeding device of the freeze-drying device is arranged at the feeding end of the freeze-drying bin according to the present invention.

Fig. 4 is a schematic view showing a continuous feeding device of the freeze-drying apparatus according to the present invention.

Fig. 5 is a top view of the continuous feed device shown in fig. 4.

Fig. 6 is a partially enlarged view of the continuous feeding device shown in fig. 4.

Fig. 7 is a schematic view of a transition bin of the continuous feed apparatus of fig. 4.

FIG. 8 is a schematic view of a vacuum breaker of the continuous feed apparatus of FIG. 4.

FIG. 9 is a schematic view of one of the partition baffles of the vacuum partition device of FIG. 8.

Fig. 10A and 10B are schematic views respectively showing a roller seal of the vacuum interruptive device shown in fig. 8.

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 a schematic view showing that the continuous feeding device of the freeze-drying device is arranged at the feeding end of the freeze-drying bin according to the present invention. Referring to fig. 3, the continuous feeding device 5 of the freeze-drying device according to the present invention is disposed on two sides of the feeding end of the freeze-drying chamber 30, for example. And the interior of the cartridge body 30 is provided with a drying and heating means 34 including a plurality of layers of laminated heating plates 341. Preferably, according to the utility model discloses a continuous material feeding unit 5 of freeze-drying equipment, for example can be applied to the freeze-drying equipment that has two side alternating cold traps, and its refrigeration that cooperates the alternating catches water and the drainage of defrosting, can realize the production of continuous incessant freeze-dried product. 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 can be realized. The freeze-drying chamber shown in fig. 3 is provided with a lifting table 31, a linear bearing mechanism 32 for supporting the vertical movement of the lifting table 31, and a movable rod 33. The lifting platform 31 can be driven by a servo motor and a speed reducer through a lifting chain 36, and the up-and-down operation of the lifting platform 31 is controlled through a linkage shaft 37. The elevating platform 31 is provided with a feeding manipulator (not shown), and after the material tray loaded with materials is sent to the table-board of the elevating platform 31 via the continuous feeding device 5 according to the present invention, the feeding manipulator can continuously and circularly send the material tray on the table-board of the elevating platform 31 to each layer of heating plates 341 of the drying and heating device 34.

Fig. 4 is a schematic view showing a continuous feeding device of the freeze-drying apparatus according to the present invention. With combined reference to fig. 3 and 4, the continuous feeding device 5 includes a front transition bin 51 for continuously feeding trays carrying materials into the freeze-drying bin body 31, and a rear transition bin 52 for transferring the trays from the front transition bin 51 to the lifting platform 31, wherein the rear transition bin 52 is located in the freeze-drying bin body 31.

Fig. 5 is a plan view of the continuous feeding device 5 shown in fig. 4, fig. 6 is a partially enlarged view of the feeding device 5 shown in fig. 4, and fig. 7 is a schematic view of a transition bin of the feeding device 5 shown in fig. 4. Referring to fig. 4 to 7, bin gates 501 are disposed at two sides of the transition bin of the continuous feeding device 5 for allowing the trays carrying the materials to pass through. The transition bins include 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. 8 is a schematic view of a vacuum interruption device of the continuous feeding device 5 shown in fig. 4, and fig. 9 is a schematic view of an interruption baffle of the vacuum interruption device shown in fig. 8. Referring to fig. 8 and 9, 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, and 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, so that the material tray loaded with materials is fed into the bin body 30.

The vacuum isolation apparatus shown in fig. 8 further 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. 10A and 10B are schematic views respectively showing a roller seal of the vacuum interruptive device shown in fig. 8. Referring to fig. 10A and 10B in combination, the driving roller 53 and the driven roller 54 are provided with rotary sealing flanges 80 on the outer sides exposed out of the wall of the transition bin. For example, the driving roller 53 and the driven roller 54 are respectively provided with a rotary sealing flange 80 at a position close to the joint of the front transition bin 51 and the rear transition bin 52, and the inner side of the flange 80 is provided with a sealing o-ring 801, which has the same function as the baffle sealing gasket 50' described above, so as to ensure the stability of the vacuum environment of the freeze-drying device.

It can be understood by those skilled in the art that, for example, when the continuous feeding device of the freeze-drying device according to the present invention is disposed at the discharge end of the freeze-drying chamber, the above operations can be reversed to make the tray completing the freeze-drying process be sequentially sent out of the chamber 30 of the freeze-drying chamber for blanking and packaging. 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. The utility model provides a freeze-drying equipment's continuous material feeding unit, its characterized in that includes the transition bin that is used for sending into the charging tray that bears the weight of the material in succession in freeze-drying storehouse, the transition bin is including receiving in succession the preceding transition bin of charging tray to and be used for with coming from the charging tray in preceding transition bin forwards into the inside back transition bin in freeze-drying storehouse, be provided with the vacuum wall device in the transition bin.

2. The device of claim 1, wherein the late transition compartment is located within a compartment body of the lyophilization compartment.

3. The apparatus of claim 1, 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 device cooperating with the break-empty solenoid valve and the vacuum solenoid valve.

4. The apparatus of claim 3, wherein the vacuum isolation apparatus further comprises an isolation baffle for passing or not passing the tray, and the pneumatic apparatus is connected with the isolation baffle through a joint bearing.

5. The apparatus of claim 1, wherein the front transition bin is provided with driving rollers and driven rollers on a bottom side thereof, and the rear transition bin is provided with driven rollers on a bottom side thereof.

6. The apparatus of claim 5, wherein the drive roller and the driven roller are linked by an o-belt.

7. The apparatus of claim 6, wherein the o-belt is provided with a tensioning pulley.

8. The apparatus of claim 6, wherein the driving roller and the driven roller are provided with rotary sealing flanges on the outer sides exposed out of the transition bin walls.

9. The device according to claim 1, characterized in that it is arranged at the inlet end and/or the outlet end of a lyophilization chamber of the lyophilization apparatus.

10. The apparatus of claim 1, wherein the lyophilization apparatus is a freeze drying apparatus employing double-sided alternating cold traps.