CN116255793A - Freeze-drying system - Google Patents

Abstract

The present invention provides a freeze-drying system, comprising a pallet carrying trolley, a circulating track and a freeze-drying box; the circulating track passes through the freeze-drying box, so that the pallet carrying trolley circulates along the circulating track; the The freeze-drying box is provided with a freeze-dried ply assembly corresponding to the pallets on the pallet carrying trolley, and the freeze-dried ply assembly includes several freeze-dried ply assemblies corresponding to the pallets on the pallet carrying trolley. layer, the medium channel in each freeze-dried layer is parallel to the moving direction of the pallet carrying trolley in the freeze-dried box; the present invention can effectively solve the technical problem of poor temperature uniformity of the freeze-dried layer, thereby reducing Energy consumption of the entire freeze-drying system.

Description

A freeze-drying system

technical field

The invention relates to the technical field of freeze-drying, in particular to a freeze-drying system.

Background technique

Freeze-drying is a technique of drying using the principle of sublimation. It is a process in which the dried material is quickly frozen at a low temperature, and then in a suitable vacuum environment, the frozen water molecules are directly sublimated into water vapor to escape. The product obtained by lyophilization is called a lyophilizer, and the process is called lyophilization. The substance is always at low temperature (frozen state) before drying, and the ice crystals are evenly distributed in the substance, and the sublimation process will not be concentrated due to dehydration, avoiding side effects such as foam and oxidation caused by water vapor. The dry substance is in the porous shape of a dry sponge, the volume is basically unchanged, and it is very easy to dissolve in water and return to its original shape. Prevents the physicochemical and biological denaturation of the dried material to the greatest extent.

Recently, in the application of raw materials and food freeze-drying, the new type of continuous freeze-drying is very popular, and the automatic one-button start can complete the production of finished products. However, in the entire freeze-drying system, most of the freeze-dried sheets are made of 316L stainless steel sheets. Only brazing, plug welding and hook welding processes can be used in the process of processing stainless steel sheets, resulting in heavy sheet weight and large welding deformation. As a result, in the whole freeze-drying process, the temperature uniformity is not good, and finally the whole freeze-drying system consumes a lot of energy.

Therefore, there is an urgent need for a freeze-drying system, which can effectively solve the technical problem of poor temperature uniformity of the freeze-dried plate, thereby reducing the energy consumption of the entire freeze-drying system.

Contents of the invention

The main purpose of the present invention is to provide a freeze-drying system aimed at solving the technical problems of poor temperature uniformity of the freeze-dried plate layer and high energy consumption in the freeze-drying system.

In order to achieve the above object, the present invention provides a freeze-drying system, comprising a tray carrying trolley, a circulating track and a freeze-drying box;

The circulating track passes through the freeze-drying box, so that the pallet carrying trolley circulates along the circulating track;

The freeze-drying box is provided with a freeze-dried ply assembly corresponding to the pallets on the pallet carrying trolley, and the freeze-dried ply assembly includes several pallets corresponding to the pallets on the pallet carrying trolley. The freeze-drying plate layer, the medium channel in each freeze-drying plate layer is parallel to the moving direction of the tray carrying trolley in the freeze-drying box.

As a further improvement of the above scheme, the freeze-dried sheet layer includes a profile plate, the profile plate has a hollow medium accommodation cavity, and a plurality of spacers are arranged in the medium accommodation cavity, and each spacer is connected to the The moving direction is arranged in parallel, and the adjacent spacers are arranged alternately at intervals, so that the medium accommodating chamber is divided into an S-shaped medium channel; the profile plate is provided with a medium inlet and a medium outlet, and the medium inlet and The medium outlets are arranged oppositely, and communicate with the beginning and the end of the S-shaped medium passage respectively.

As a further improvement of the above solution, the medium inlet and the medium outlet are respectively connected with a first connecting conduit and a second connecting conduit, and the materials of the first connecting conduit and the second connecting conduit are consistent with the profile plate, Aluminum is preferred.

As a further improvement of the above solution, the freeze-dried plate assembly further includes a liquid inlet manifold and a liquid outlet manifold, the liquid inlet manifold and the liquid outlet manifold are arranged vertically opposite each other, and are respectively arranged at the same height There are sheet-layer fixing lugs, along the height direction of the liquid inlet confluence pipe and the liquid outlet confluence pipe, a plurality of the sheet layer fixing lugs are arranged from top to bottom;

Each of the freeze-dried sheets is respectively arranged on the corresponding sheet fixing lugs.

As a further improvement of the above scheme, both the liquid inlet manifold and the liquid outlet manifold have a confluence cavity, and there are correspondingly provided with several liquid inlets and several outlets communicating with the confluence cavity respectively. Liquid ports, several of the liquid inlets and several of the liquid outlets are arranged on the corresponding confluence pipes from top to bottom; several of the liquid inlets and several of the liquid outlets are respectively at the same height as The medium inlet and the medium outlet of the freeze-dried lamina are in communication.

As a further improvement of the above solution, each of the liquid inlets and each of the liquid outlets is respectively connected with a metal pipe.

As a further improvement of the above scheme, the first connecting conduit and the metal pipe of the liquid inlet are detachably connected through the first flange structure; the second connecting conduit and the metal hose of the liquid outlet are connected through the second flange structure Detachable connection.

As a further improvement of the above solution, the first flange structure includes a first connecting flange arranged on the first connecting conduit away from the medium inlet end, and a second connecting flange arranged on the metal hose, so The first connecting flange and the second connecting flange are matched and connected correspondingly, and a gasket is also arranged between the first connecting flange and the second connecting flange.

As a further improvement of the above solution, the second flange structure includes a third connecting flange disposed on the second connecting conduit away from the medium inlet end, and the third connecting flange and the second connecting flange match correspondingly connection, and a gasket is also provided between the third connecting flange and the second connecting flange.

As a further improvement of the above solution, the profile plate includes a plate body, the shape of the forward projection of the profile plate body can cover the rectangle or square of the tray, and the profile plate body is a hollow plate body with openings at both ends, Sealing strips are correspondingly blocked at the openings at both ends to form a closed medium accommodating cavity; and the material of the sealing strips is consistent with that of the first connecting conduit and the second connecting conduit, so as to ensure the welding effect.

As a further improvement of the above scheme, the two ends of the freeze-drying box body are respectively provided with sealed doors, and the sealed doors are slidably connected to the corresponding ends, and the sliding direction is the same as that of the tray carrying trolley in the freeze-dried container. The direction of movement in the box is vertical;

The circulating track includes a first section of track arranged inside the freeze-drying box, a second section of track arranged outside the freeze-drying box, and the two ends of the second section of track are respectively rotatably provided with The third section of track and the fourth section of track, the third section of track and the fourth section of track are operatively docked with the two ends of the first section of track to form the circular track; the third section of track The track, the fourth section of the track cooperate with the corresponding sealed door to realize the feeding and discharging of the freeze-drying box.

As a further improvement of the above solution, the third section of track and the fourth section of track are respectively hinged to the two ends of the second section of track, and the third section of track and the fourth section of track are further A rotation pushing mechanism is respectively provided for pushing the corresponding segment of the track to rotate so as to achieve docking or disengagement with the first segment of the track.

As a further improvement of the above solution, the rotating push mechanism includes a push drive device, a first connecting rod connected to the power output end of the push drive device, and a first connecting rod arranged on the corresponding section of track, the The first link is connected with the second link.

As a further improvement of the above solution, the push drive device includes but is not limited to a cylinder or an electric cylinder.

Because the present invention has adopted above technical scheme, the beneficial effect that makes this application possess is:

1. The present invention provides a freeze-drying system, comprising a pallet carrying trolley, a circulating track and a freeze-drying box; the circulating track passes through the freeze-drying box, so that the pallet carrying trolley circulates along the circulating track; The freeze-drying box is provided with a freeze-dried ply assembly corresponding to the pallets on the pallet carrying trolley, and the freeze-dried ply assembly includes several pallets corresponding to the pallets on the pallet carrying trolley. The freeze-dried board layer, the medium channel in each freeze-dried board layer is parallel to the moving direction of the pallet carrying trolley in the freeze-drying box; in such a setting, the pallet transfer trolley carries out radiation heat transfer for carrying trays Freeze-dried and transported circularly with the track; in the present invention, the medium channel in the freeze-dried slab is set parallel to the moving direction of the pallet carrying trolley in the freeze-dried box, which can reduce the temperature difference between the inlet and outlet of the lyophilized slab and ensure the maximum exchange rate. The heat ensures the uniformity of the freeze-drying plate layer, so that the products in the tray can be freeze-dried by the effective radiation heat transfer of the express delivery, thereby reducing the energy consumption of the freeze-drying system.

2. The present invention provides a freeze-drying system, the freeze-dried plate layer includes a profile plate, the profile plate has a hollow medium accommodation cavity, and a plurality of spacers are arranged in the medium accommodation cavity, each of the spacers The bars are all arranged parallel to the moving direction, and the adjacent spacers are arranged alternately at intervals, so that the medium accommodating chamber is divided into an S-shaped medium channel; the profile plate is provided with a medium inlet and a medium outlet, so that The medium inlet and the medium outlet are arranged oppositely, and communicate with the head and tail of the S-shaped medium channel respectively; the freeze-dried sheet layer of the present invention includes a profile plate, and the profile plate has a hollow medium accommodation cavity, and the profile plate The board can be customized and formed by one-time extrusion molding, which is equivalent to the traditional stainless steel board layer. The processing difficulty of the freeze-dried board layer using the profile board is low, which reduces the processing cost;

In addition, the thermal conductivity of aluminum can quickly radiate heat to the corresponding products, thereby reducing the energy consumption of the entire freeze-drying system. Furthermore, the medium channel of the freeze-dried plate layer is an S-shaped medium channel, making the freeze-dried plate The heat conduction uniformity of the layer is better; and in some preferred embodiments, in order to further improve the stiffness of the freeze-dried board layer and control the deformation of the freeze-dried board layer, reinforcing ribs can be arranged along the S-shaped medium channel, increasing The stiffness of the freeze-dried ply does not decrease the uniformity of the freeze-dried ply.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some implementations of the present invention. For those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative effort.

Fig. 1 is a three-dimensional schematic diagram of a freeze-drying system disclosed by the present invention;

Fig. 2 is a partial three-dimensional schematic diagram of a freeze-drying system disclosed in the present invention;

Fig. 3 is a schematic front view of a tray carrying trolley of a freeze-drying system disclosed by the present invention in a state of entering a freeze-drying box;

Fig. 4 is a schematic perspective view of a freeze-drying plate assembly of a freeze-drying system disclosed in the present invention;

Fig. 5 is a three-dimensional schematic diagram of a freeze-drying plate layer of a freeze-drying system disclosed in the present invention;

6 is a schematic side view of a freeze-drying plate layer of a freeze-drying system disclosed in the present invention;

Fig. 7 is a schematic cross-sectional view of A-A of Fig. 6;

Fig. 8 is a schematic cross-sectional view of B-B in Fig. 7;

Fig. 9 is a three-dimensional schematic diagram of the docking of the third track and the first track of a freeze-drying system disclosed in the present invention;

Fig. 10 is a three-dimensional schematic diagram of the separation between the third track and the first track of a freeze-drying system disclosed in the present invention;

Fig. 11 is a simulation diagram of the overall flow field distribution of the freeze-drying plate assembly of a freeze-drying system disclosed in the present invention;

Fig. 12 is a simulation diagram of surface temperature field distribution of a freeze-drying plate assembly of a freeze-drying system disclosed in the present invention;

Explanation of reference numbers:

1. Pallet carrying trolley; 2. Circular track; 21. First section of track; 22. Second section of track; 23. Third section of track; 24. Fourth section of track; 3. Freeze-drying box;

4. Freeze-dried laminate assembly, 41. Freeze-dried laminate; 42. Medium chamber; 43. Spacer; 44. First connecting conduit; 45. Second connecting conduit; 46. Inlet manifold; 47. Outlet Liquid manifold; 48. Laminate fixed lug; 49. Metal hose; 51. First connecting flange; 52. Second connecting flange; 53. Gasket; 54. Third connecting flange; 55. Seal ; 6. Sealed door; 7. Rotate the push mechanism.

The realization of the purpose of the present invention, functional characteristics and advantages will be further described with reference to the accompanying drawings in combination with the implementation modes.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship, movement conditions, etc. between the components in a certain posture (as shown in the drawings), If the specific posture changes, the directional indication also changes accordingly.

In addition, in the present invention, descriptions such as "first", "second" and so on are used for description purposes only, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features.

Moreover, the technical solutions of the various embodiments of the present invention can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered as a combination of technical solutions. Does not exist, nor is it within the scope of protection required by the present invention.

In the above embodiments, those skilled in the art can use the prior art for software control, and the present invention only protects the structure of a freeze-drying system and the mutual connection relationship.

Referring to Fig. 1-Fig. 10, the present invention provides a kind of freeze-drying system, comprises pallet carrier trolley 1, circulation track 2 and freeze-drying box body 3;

The circulation track 2 passes through the freeze-drying box body 3, so that the pallet carrying trolley 1 circulates along the circulation track 2;

The freeze-drying box 3 is provided with a freeze-dried layer 41 assembly 4 corresponding to the pallet on the pallet carrying trolley 1, and the freeze-dried laminate 41 assembly 4 includes a A plurality of freeze-drying plates 41 arranged corresponding to each tray, the medium channel in each freeze-drying plate 41 is parallel to the movement direction of the tray carrying trolley 1 in the freeze-drying box 3;

Specifically, the two ends of the freeze-drying box 3 are respectively provided with sealed doors 6, and the sealed doors 6 are slidably connected to the corresponding ends, and the sliding direction is the same as that of the tray carrying trolley 1 in the freeze-dried container. The movement direction in the box body 3 is vertical;

The circulation track 2 includes a first section track 21 arranged inside the freeze-drying box 3, a second section track 22 arranged outside the freeze-dry box 3, and two ends of the second section track 22 Parts are rotatably provided with a third section of track 23 and a fourth section of track 24, the third section of track 23 and the fourth section of track 24 are operatively docked with the two ends of the first section of track 21, Constitute the circulation track 2; the third section track 23, the fourth section track 24 cooperate with the corresponding sealed door 6 to realize the feeding and discharging of the freeze-drying box 3; the freeze-drying When the airtight door 6 of the feed port of the box body 3 is in a closed state, the third section track 23 is in a disengaged state from the first section track 21; when feeding is required, the freeze-dried box body 3 feeds The sealing door 6 of the port is slid open along the direction perpendicular to the moving direction of the tray carrying trolley 1 in the freeze-drying box 3, and then the third section track 23 of the feed port of the freeze-drying box 3 is on the corresponding Driven by power, it rotates in the forward direction, so that the third section of track 23 is docked with the first section of track 21, and then, the tray carrying trolley 1 carrying the product to be freeze-dried is moved along under the action of the corresponding driving force. The third section of the track 23 enters the freeze-drying box 3 for freeze-drying; when the feeding is completed, the third section of the track 23 is driven by the corresponding power to rotate in reverse, so that the third section of the track 23 disengages from the docking with the first section track 21, and then the sealing door 6 of the feed port of the freeze-drying box 3 is closed; correspondingly, the sealing door 6 of the discharge end of the freeze-drying box 3 and the fourth Segment track 24 also carries out above-mentioned cooperative operation; Such arrangement makes described pallet transfer trolley connect continuous transportation with circulation track 2, carries out radiation heat transfer freeze-drying for carrying pallet;

In the present invention, the medium channel in the freeze-dried sheet layer 41 is arranged parallel to the moving direction of the tray carrying trolley 1 in the freeze-dried box body 3, which can reduce the temperature difference between the inlet and outlet of the freeze-dried sheet layer 41 and ensure the maximum heat transfer , so as to ensure the uniformity of the freeze-drying plate layer 41, so that the products in the loading tray can be freeze-dried by the effective radiation heat transfer of the express delivery, thereby reducing the energy consumption of the freeze-drying system.

As a preferred embodiment, the freeze-dried plate layer 41 includes a profile plate, and the profile plate has a hollow medium accommodating chamber 42, and a plurality of spacers 43 are arranged in the medium accommodating cavity 42, and each spacer bar 43 are all arranged parallel to the moving direction, and the adjacent spacers 43 are arranged in a staggered interval, so that the medium accommodating chamber 42 is divided into an S-shaped medium channel; the profile plate is provided with a medium inlet and a medium outlet , the medium inlet and the medium outlet are arranged oppositely, and communicate with the beginning and end of the S-shaped medium channel respectively;

The freeze-dried sheet layer 41 of the present invention includes a profiled sheet, and the profiled sheet has a hollow medium accommodation cavity 42, and the profiled sheet can be produced by customization, and is extruded by a single mold, and the freeze-dried sheet layer of the profiled sheet is used 41 The processing difficulty is low, which reduces the processing cost;

In addition, the profile plate is made of aluminum, which has good thermal conductivity, so it can quickly radiate heat to the corresponding product, thereby reducing the energy consumption of the entire freeze-drying system. Further, the medium channel of the freeze-drying plate layer 41 It is an S-shaped medium channel, so that the heat conduction uniformity of the freeze-dried sheet layer 41 is better; and in some preferred embodiments, in order to further improve the rigidity of the freeze-dried sheet layer 41, the deformation amount of the freeze-dried sheet layer 41 is controlled , reinforcing ribs can be arranged along the S-shaped medium channel, while increasing the rigidity of the freeze-dried sheet layer 41, the uniformity of the freeze-dried sheet layer 41 will not be reduced.

As a preferred embodiment, the medium inlet and the medium outlet are respectively connected with a first connecting conduit 44 and a second connecting conduit 45, and the materials of the first connecting conduit 44 and the second connecting conduit 45 are all made of aluminum; The material used for the freeze-dried laminate is aluminum, that is, the material at the medium inlet and the medium outlet is also aluminum, and when it is connected to the first connecting conduit 44 and the second connecting conduit 45, aluminum is also used. In the case of the same material, It is convenient for the welding of two connecting conduits, and can effectively ensure the welding effect; compared with the welding of the traditional stainless steel connecting conduit and the freeze-dried plate layer 41 made of aluminum, the uniform use of aluminum material greatly reduces the difficulty of welding and avoids the Welding between different materials is likely to cause welding defects such as virtual welding.

As a preferred embodiment, the freeze-dried plate layer 41 assembly 4 also includes a liquid inlet confluence 46 and a liquid outlet confluence 47, and the liquid inlet confluence 46 and the liquid outlet confluence 47 are vertically oppositely arranged, and The plate layer fixing lugs 48 are correspondingly arranged in height, and several plate layer fixing lugs 48 are arranged from top to bottom along the height direction of the liquid inlet manifold 46 and the liquid outlet manifold 47;

Each of the freeze-dried plies 41 is respectively arranged on the corresponding ply fixing lug 48; in this embodiment, the ply fixing lug 48 has a U-shaped groove, and the freeze-dried ply 41 is clamped in the U-shaped groove on the corresponding height; such an arrangement facilitates the disassembly and assembly of the freeze-dried board layer 41, and there is no need to set a complicated installation structure on the freeze-dried board layer 41, further reducing the Reduced the processing difficulty of the freeze-dried laminate 41;

Both the liquid inlet confluence pipe 46 and the liquid outlet confluence pipe have confluence inner cavities, which are respectively provided with a plurality of liquid inlets and a plurality of liquid outlets communicating with the confluence inner cavities. The liquid inlet and several liquid outlets are respectively arranged on the corresponding confluence pipe from top to bottom; The medium inlet and the medium outlet are in communication; each of the liquid inlets and each of the liquid outlets is respectively connected to a metal pipe 49;

The first connecting conduit 44 is detachably connected to the metal pipe 49 of the liquid inlet through a first flange structure; the second connecting conduit 45 is detachably connected to the metal pipe 49 of the liquid outlet through a second flange structure; The first connecting conduit 44 and the second connecting conduit 45 on the freeze-dried sheet layer 41 are detachably connected to the metal pipe 49 on the corresponding confluence pipe respectively through corresponding flange structures. The detachment of the freeze-drying plate 41 and the confluence pipe can be realized by dismantling or installing the corresponding flange.

As a preferred embodiment, the first flange structure includes a first connecting flange 51 arranged on the first connecting conduit away from the medium inlet end, a second connecting flange 52 arranged on the metal hose, The first connecting flange 51 and the second connecting flange 52 of the liquid inlet metal pipe are matched and connected correspondingly, and a gasket is also arranged between the first connecting flange 51 and the second connecting flange 52 53; in this embodiment, the second connecting flange 52 is provided with a first groove, and the sealing gasket 53 is set in the first groove, correspondingly, the first connecting flange 51 A first boss matching the first groove is provided on the top, so that a sealed and detachable connection between the first connecting conduit and the inlet manifold is ensured;

The second flange structure includes a third connecting flange 54 arranged on the second connecting conduit away from the medium inlet end, and the third connecting flange 54 is connected to the second connection of the metal hose at the liquid outlet. The flange 52 is correspondingly connected, and a gasket 53 is also provided between the third connecting flange 54 and the second connecting flange 52; the gasket 53 is arranged in the corresponding first groove, so The third connecting flange 54 is provided with a second boss matching the first groove, so that the sealed and detachable connection between the second connecting conduit and the liquid outlet manifold is ensured.

As a preferred embodiment, the profile plate includes a plate body whose forward projection shape can cover the rectangle or square shape of the tray, the plate body is a hollow plate body with openings at both ends, and the two ends are open Sealing strips 55 are correspondingly blocked at the places to form a closed medium containing chamber 42; and the material of the sealing strips 55 is consistent with the first connecting conduit 44 and the second connecting conduit 45, so as to ensure the welding effect; In this embodiment, the board body is rectangular, and the opening is arranged on the short side of the rectangle, the spacer 43 in the board is parallel to the long side of the rectangle, the medium inlet and the The media outlets are respectively arranged on the short sides of the rectangle, and are communicated with the S-shaped media channel; in such a setting, the direction of the medium flow channel of the freeze-dried plate layer 41 is to enter from the long side and exit from the long side, and the medium flow The layout of the lanes is S-shaped, the force on the whole freeze-dried board layer 41 is balanced, the deformation of the freeze-dried board layer 41 is small, and it is also convenient to arrange the medium channel of the freeze-dried board layer 41 in the same position as the pallet carrying trolley 1. The method in which the moving direction in the freeze-drying box 3 is parallel to ensure the uniformity of the freeze-dried plate layer 41 .

Further, the velocity cloud diagram of the middle section of the freeze-dried slab is shown in Figure 11. In the figure, the velocity gradually decreases from red to blue. From Figure 11-a, it can be seen that the silicone oil reciprocates in the freeze-dried slab along the flow channel divided by the square steel pipe Flow, the overall flow is consistent with expectations, there is a low flow velocity area inside the first pipe at the inlet and the square steel pipe connected to the upper and lower ends of the frame, which can be more clearly observed from the partially enlarged Figure 11-b and the cross-sectional velocity Figure 11-c this phenomenon. The Reynolds number in the low flow rate area is low, and the convective heat transfer coefficient during heat transfer will also be low. The heat may not be taken away through the silicone oil in time, resulting in a higher temperature in the low flow rate area, but the flow rate of the first pipe at the inlet is low. Avoided; combined with Figure 12, it can be seen that the temperature field of the freeze-dried laminate provided by the present invention is relatively uniform on the whole, specifically, the surface temperature field of the freeze-dried laminate under the condition of 0.25 emissivity and -40°C silicone oil inlet The distribution is shown in Figure 12. It can be seen that the temperature around the freeze-dried slab is relatively high. In the flow field analysis, the low-velocity zone between the inlet side frame and the right angle is not conducive to heat transfer. In practical applications, due to freeze-drying The plate assembly is usually able to completely cover and extend beyond the edge of the tray, so the higher temperature around the freeze-drying plate has little effect on the freeze-drying effect. The temperature field distribution of the layer assembly is relatively uniform, and the floating range is within 0.05°C. It can be seen that the uniformity of the freeze-dried sheet layer assembly provided by the present invention is very good.

As a preferred embodiment, the third section of track 23 and the fourth section of track 24 are hinged to the two ends of the second section of track 22 respectively, and the third section of track 23 and the fourth section of track The track 24 is also provided with a rotating push mechanism 7, which is used to push the corresponding section of the track to rotate to realize docking or disengagement with the first section of the track 21; The first connecting rod connected to the power output end of the device, the first connecting rod arranged on the corresponding section of the track, the first connecting rod is connected to the second connecting rod; the driving device includes but is not limited to Cylinder or electric cylinder; In this embodiment, the first connecting rod and the second connecting rod are provided with several connection holes along their length direction, such setting can be based on the power of the driving device, and the corresponding The length of the third section of the track 23 and the length of the fourth section of the track 24 are selected in the optimal connection hole to realize the connection and installation of the first connecting rod and the second connecting rod, so as to achieve the purpose of labor saving.

The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Under the inventive concept of the present invention, the equivalent structural transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly/indirectly used in other Related technical fields are all included in the patent protection scope of the present invention.

Claims (10)

1. A freeze-drying system comprises a tray carrying trolley (1), a circulating track (2) and a freeze-drying box body (3);

the circulating rail (2) passes through the freeze-drying box body (3) so as to enable the tray carrying trolley (1) to circularly run along the circulating rail (2); be provided with in freeze-drying box (3) with freeze-drying sheet layer subassembly (4) that the tray on tray delivery dolly (1) corresponds the setting, its characterized in that, freeze-drying sheet layer subassembly (4) include with tray on tray delivery dolly (1) a plurality of layers freeze-drying sheet layer (41) that the tray one-to-one set up, every medium passageway in freeze-drying sheet layer (41) with tray delivery dolly (1) are in the direction of motion is parallel in freeze-drying box (3).

2. A lyophilization system as in claim 1, wherein the lyophilization plate (41) comprises a profile plate having a hollow media-receiving cavity (42), wherein a plurality of spacers (43) are disposed within the media-receiving cavity (42), each spacer (43) being disposed parallel to the direction of motion, and adjacent spacers (43) being staggered at intervals such that the media-receiving cavity (42) is divided into S-shaped media channels; the section plate is provided with a medium inlet and a medium outlet, and the medium inlet and the medium outlet are oppositely arranged and are respectively communicated with the head and the tail of the S-shaped medium channel.

3. A freeze drying system according to claim 2, wherein the medium inlet and the medium outlet are connected with a first connecting duct (44) and a second connecting duct (45), respectively, and the first connecting duct (44) and the second connecting duct (45) are made of the same material as the profiled sheet.

4. A lyophilization system according to claim 3, wherein the lyophilization plate assembly (4) further comprises a liquid inlet manifold (46) and a liquid outlet manifold (47), wherein the liquid inlet manifold (46) and the liquid outlet manifold (47) are vertically arranged in opposition and respectively provided with plate fixing lugs (48) at the same height; a plurality of lamellar fixing lugs (48) are arranged from top to bottom along the height direction of the liquid inlet collecting pipe (46) and the liquid outlet collecting pipe (47);

each freeze-dried plate layer (41) is respectively arranged on the plate layer fixing lugs (48) with corresponding heights.

5. The lyophilization system according to claim 4, wherein said liquid inlet manifold (46) and said liquid outlet manifold each have a manifold chamber, and a plurality of liquid inlet ports and a plurality of liquid outlet ports respectively communicating with the corresponding manifold chamber are provided thereon, and a plurality of liquid inlet ports and a plurality of liquid outlet ports are respectively provided on the corresponding manifold pipe from top to bottom; the liquid inlets and the liquid outlets are respectively communicated with the medium inlets and the medium outlets of the freeze-drying plate layers (41) with corresponding heights.

6. A freeze drying system according to claim 5, wherein each of the liquid inlet and each of the liquid outlet is connected with a metal tube (49) respectively.

7. A lyophilization system as in claim 6, wherein said first connection conduit (44) and said metal tube (49) of said liquid inlet are detachably connected by a first flange structure; the second connecting conduit (45) is detachably connected with the metal pipe (49) of the liquid outlet through a second flange structure.

8. A lyophilization system according to claim 7, wherein the first flange structure comprises a first connection flange (51) provided at the first connection conduit (44) remote from the medium inlet end, a second connection flange (52) provided at the metal tube (49), the first connection flange (51) and the second connection flange (52) being correspondingly connected in a mating manner, and a gasket (53) being further provided between the first connection flange (51) and the second connection flange (52).

9. A lyophilization system according to claim 8, wherein the second flange structure comprises a third connection flange (54) provided at the second connection conduit (45) remote from the medium inlet end, the third connection flange (54) and the second connection flange (52) being correspondingly connected in a mating manner, and a gasket (53) being further provided between the third connection flange (54) and the second connection flange (52).

10. A freeze-drying system according to any one of claims 1-9, wherein sealing doors (6) are respectively and correspondingly arranged at two ends of the freeze-drying box body, the sealing doors (6) are slidably connected with the corresponding ends, and the sliding direction is perpendicular to the moving direction of the tray carrying trolley (1) in the freeze-drying box body (3);

the circulating track (2) comprises a first section of track (21) arranged inside the freeze-drying box body and a second section of track (22) arranged outside the freeze-drying box body, wherein a third section of track (23) and a fourth section of track (24) are rotatably arranged at two ends of the second section of track (22), and the third section of track (23) and the fourth section of track (24) are operably butted with two ends of the first section of track (21) to form the circulating track (2); the third section of track (23) and the fourth section of track (24) are matched with the corresponding sealing door (6) to realize feeding and discharging of the freeze-drying box body (3).

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