Freeze dryer for freeze-dried powder

Abstract

A square pipe communicated with a lower cavity is arranged in an upper cavity, an inner hole of the square pipe comprises a plurality of penetrating holes which are sequentially communicated from top to bottom and are sequentially increased in size, and object placing tables which are arranged corresponding to the penetrating holes and are distributed in the height direction are fixedly connected to the outer side face of the square pipe. The storage tables extend inwards and communicate with the corresponding through holes, and cooling channels which penetrate through the storage tables and communicate with the through holes are formed in the storage tables. When cold air passes through the square tube, due to the sequential arrangement of the through holes, a channel of which the size is gradually reduced and which is in an inverted step shape is formed in the square tube, so that the cold air is shunted, and the freezing efficiency of solutions at various heights is accelerated; and meanwhile, the number of the through holes can be increased, so that more object placing tables can be placed, and the freeze-dried powder preparation device is suitable for small-batch multi-variety freeze-dried powder preparation.

Description

Technical Field

[0001] The utility model relates to the field of freeze-dried powder, in particular to the technical field of freeze-dried powder manufacturing, and specifically refers to a freeze dryer for freeze-dried powder. Background Art

[0002] A freeze dryer is a machine composed of a refrigeration system, a vacuum system, a heating system, and an electrical instrument control system. The main components of the freeze dryer are a drying box, a condenser, a refrigeration unit, a vacuum pump, a heating device, a cooling device, etc. The freeze drying equipment in the prior art is relatively complicated to set up, difficult to operate, and inconvenient to quickly freeze-dry powder medicines, making it more troublesome and time-consuming, and not convenient and easy to operate.

[0003] In order to solve the defects and shortcomings of the freeze-drying equipment mentioned above, the Chinese utility model patent with application number 202021253385.X disclosed a freeze-drying device for producing pharmaceutical powders. However, the number of built-in racks in the cavity of the device is small, which is not suitable for the production of small batches of multi-variety freeze-dried powders. At the same time, the uneven refrigeration of the device affects the drying efficiency. Utility Model Content

[0004] The utility model aims at the deficiencies of the prior art and provides a freeze dryer for freeze-dried powder, which is suitable for producing freeze-dried powder of various varieties in small batches and ensures uniform refrigeration and drying efficiency.

[0005] The utility model is realized through the following technical scheme: a freeze dryer for freeze-dried powder, comprising an upper cavity, wherein a square tube connected to a lower cavity is arranged in the upper cavity, the inner hole of the square tube comprises a plurality of through holes which are connected in sequence from top to bottom and whose sizes increase in sequence, a storage table which is fixedly connected to the outer surface of the square tube and is arranged in the height direction and is arranged in correspondence with the through holes, the storage table extends inwardly and is connected to the corresponding through holes, and a cooling channel which passes through the storage table and is connected to the through holes is opened in the storage table.

[0006] When the utility model is in use, cold air enters the upper cavity from the lower cavity, and passes through the square tube into the upper cavity. When the cold air passes through the square tube, due to the sequential arrangement of the perforations, a channel with a gradually decreasing size and an inverted step shape is formed in the square tube. When the cold air hits the step of the channel, a part of it enters the cooling channel corresponding to the corresponding perforation, so that the cold air is diverted. At the same time, the diverted cold air freezes the solution above the storage table in the cooling channel, thereby accelerating the freezing efficiency of solutions at various heights. At the same time, because the cold air passes directly below the solution, the solution can be cooled more evenly, thereby ensuring the subsequent drying efficiency. At the same time, because the number of perforations can be increased, more storage tables can be placed, which is suitable for small-batch and multi-variety freeze-dried powder production.

[0007] Preferably, the cooling channel is also connected to a guide box located in the corresponding perforation, the bottom surface of the guide box is open, the top surface is an arc surface, the length of the guide box is less than or equal to the difference in side length between the corresponding perforation and the adjacent perforation above, and the difference in side length between two adjacent perforations is the same.

[0008] This preferred solution provides a guiding effect on cold air by setting a guide box, so that more cold air can enter the cooling channel; at the same time, the length of the guide box is limited by setting the length of the guide box, so as to avoid the guide box extending too long and affecting the cold air entering the adjacent upper cooling channel.

[0009] Preferably, a jet plate is provided on the side of the square tube, which is located above the storage table and corresponds to the storage table. A plurality of nozzles connected to the inner cavity of the jet plate are provided on the bottom surface of the jet plate. Another opening of the cooling channel is connected to the inner cavity of the jet plate through a pipe.

[0010] When the preferred solution is in use, cold air enters the jet plate from the cooling channel along the pipeline, and cools the solution from above the solution along the nozzle, thereby making the cooling more uniform.

[0011] Preferably, the top surface of the jet plate is connected to an adjacent storage platform located above.

[0012] This preferred solution facilitates enhancing the support strength of the jet plate when in use.

[0013] Preferably, a square groove is provided on the storage table, and a bottom surface of the square groove is provided with crisscrossing transverse grooves and longitudinal grooves, and the transverse grooves and longitudinal grooves divide the square groove into four areas.

[0014] This preferred solution facilitates positioning of sample containers for containing solutions on the storage table by providing square grooves, and facilitates dividing the square grooves by providing horizontal grooves and vertical grooves, so as to place more sample containers, thereby meeting the needs of small batches of multiple varieties of sample containers. An insert plate inserted into the horizontal groove and the vertical groove is provided on the bottom surface of the corresponding sample container, and the width of the insert plate is half the width of the horizontal groove / vertical groove.

[0015] Preferably, the square groove is provided with two intersecting oblique grooves extending along its diagonal line.

[0016] This preferred solution further divides the square grooves by setting up the inclined grooves, thereby further meeting the needs of small batches of multiple varieties of sample containers.

[0017] Preferably, a circular groove with the center of the square groove as the center and the side length of the square groove as the diameter is provided in the square groove, and the horizontal groove, the vertical groove and the oblique groove divide the circular groove into eight sector-shaped areas.

[0018] This preferred solution facilitates the placement of the fan-shaped sample container by setting the circular groove. The arc section of the fan-shaped sample container is adapted to the thickness of the circular groove, and the straight end of the fan-shaped sample container is half the width of the horizontal groove / vertical groove / oblique groove.

[0019] The beneficial effects of the utility model are as follows: cold air enters the upper cavity from the lower cavity, and passes through the square tube into the upper cavity. When the cold air passes through the square tube, due to the sequential arrangement of the perforations, a channel with a gradually decreasing size and an inverted step shape is formed in the square tube. When the cold air hits the step of the channel, a part of it enters the cooling channel corresponding to the corresponding perforation, thereby diverting the cold air. At the same time, the diverted cold air freezes the solution above the storage table in the cooling channel, thereby accelerating the freezing efficiency of solutions at various heights. At the same time, since the cold air passes directly below the solution, the solution can be cooled more evenly, thereby ensuring the subsequent drying efficiency. At the same time, since the number of perforations can be increased, more storage tables can be placed, thereby being suitable for small-batch and multi-variety freeze-dried powder production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a top view of the square tube;

[0022] Figure 3 for Figure 2 Schematic diagram of the cross section at AA;

[0023] Figure 4 This is a schematic diagram of a storage table viewed from above;

[0024] As shown in the figure:

[0025] 1. Machine body, 2. Vacuum centrifugal concentrator, 3. Cold trap, 4. Square tube, 5. Jet plate, 6. Storage table, 7. Upper cavity, 8. Pipeline, 9. Nozzle, 10. Cooling channel, 11. Perforation, 12. Guide box. DETAILED DESCRIPTION

[0026] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0027] See attached Figure 1-4 The utility model discloses a freeze drying machine for freeze-dried powder, comprising a machine body 1, a roller, a heat dissipation window, a control panel, an inlet, a flip door, a top seat, a cooling device, a first connecting pipe, a second connecting pipe, a vacuum pump, a third connecting pipe, a fixing seat, a fourth connecting pipe, a fifth connecting pipe, a vacuum centrifugal concentrator 2, a cold trap 3, a lower cavity, a lower partition, a freeze drying chamber, an upper partition, an upper cavity 7, a gas filtering mechanism, a filter cartridge, a clean gas cartridge, a sixth connecting pipe, a dryer and a seventh connecting pipe.

[0028] A square tube 4 connected to the lower cavity is provided in the upper cavity 7, and the inner hole of the square tube 4 includes a plurality of through holes 11 which are connected in sequence from top to bottom and increase in size in sequence, and a storage table 6 which is fixedly connected to the outer surface of the square tube 4 and is arranged in the height direction and is arranged corresponding to the through holes 11, and the storage table 6 extends inwardly and is connected to the corresponding through holes 11, and a cooling channel 10 which passes through the storage table 6 and is connected to the through holes 11 is provided in the storage table 6.

[0029] The cooling channel 10 is also connected to a guide box 12 located in the corresponding perforation 11. The bottom surface of the guide box 12 is open and the top surface is an arc surface. The length of the guide box 12 is less than or equal to the side length difference between the corresponding perforation 11 and the adjacent perforation 11 above, and the side length difference between two adjacent perforations 11 is the same.

[0030] The side of the square tube 4 is also provided with a jet plate 5 located above the storage table 6 and corresponding to the storage table 6. The bottom surface of the jet plate 5 is provided with a plurality of nozzles 9 connected to the inner cavity of the jet plate 5. Another opening of the cooling channel 10 is connected to the inner cavity of the jet plate 5 through a pipe 8. The top surface of the jet plate 5 is connected to the storage table 6 located adjacent to the top.

[0031] The storage table 6 is provided with a square groove, and the bottom surface of the square groove is provided with crisscrossing horizontal grooves and vertical grooves, which divide the square groove into four areas. The bottom surface of the corresponding sample container is provided with an insert plate inserted into the horizontal groove and the vertical groove, and the width of the insert plate is half of the width of the horizontal groove / vertical groove.

[0032] The square groove is also provided with two intersecting oblique grooves extending along its diagonal line, and the bottom surface of the corresponding sample container is provided with an inserting plate inserted into the horizontal groove / vertical groove / oblique groove, and the width of the inserting plate is half of the width of the horizontal groove / vertical groove.

[0033] The square groove is also provided with a circular groove with the center of the square groove as the center and the side length of the square groove as the diameter. The horizontal groove, the vertical groove and the oblique groove divide the circular groove into eight sector-shaped areas. The straight end of the sector-shaped structure sample container is half the width of the horizontal groove / vertical groove / oblique groove.

[0034] When the utility model is in use, cold air enters the upper cavity 7 from the lower cavity, and passes through the square tube 4 into the upper cavity 7. When the cold air passes through the square tube 4, due to the sequential arrangement of the perforations 11, a channel with a gradually decreasing size and an inverted step shape is formed in the square tube 4. When the cold air hits the step of the channel, a part of it enters the cooling channel 10 corresponding to the corresponding perforation 11, so that the cold air is diverted. At the same time, the diverted cold air freezes the solution above the storage table 6 in the cooling channel 10, thereby accelerating the freezing efficiency of solutions at various heights. At the same time, because the cold air passes directly below the solution, the solution can be cooled more evenly, thereby ensuring the subsequent drying efficiency. At the same time, because the number of perforations 11 can be increased, more storage tables 6 can be placed, so that it is suitable for small-batch multi-variety freeze-dried powder production.

[0035] The cold air enters the jet plate 5 along the pipe 8 from the cooling channel 10, and cools the solution from above the solution along the nozzle 9, so that the cooling is more uniform.

[0036] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A freeze dryer for freeze-dried powder, comprising an upper cavity (7), characterized in that: A square tube (4) communicating with the lower cavity is arranged in the upper cavity (7); the inner hole of the square tube (4) includes a plurality of through holes (11) communicating with each other in sequence from top to bottom and increasing in size in sequence; a storage platform (6) arranged corresponding to the through holes (11) and arranged in the height direction is fixedly connected to the outer surface of the square tube (4); the storage platform (6) extends inwardly and communicates with the corresponding through holes (11); a cooling channel (10) penetrating the storage platform (6) and communicating with the through holes (11) is provided in the storage platform (6).

2. The freeze dryer for freeze-dried powder according to claim 1, characterized in that: The cooling channel (10) is further connected to a guide box (12) located in the corresponding through hole (11); the bottom surface of the guide box (12) is open and the top surface is an arc surface; the length of the guide box (12) is less than or equal to the difference in side length between the corresponding through hole (11) and the adjacent through hole (11) above, and the difference in side length between two adjacent through holes (11) is the same.

3. The freeze dryer for freeze-dried powder according to claim 1, characterized in that: The side surface of the square tube (4) is also provided with a jet plate (5) located above the storage platform (6) and arranged corresponding to the storage platform (6); a plurality of nozzles (9) connected to the inner cavity of the jet plate (5) are provided on the bottom surface of the jet plate (5); another opening of the cooling channel (10) is connected to the inner cavity of the jet plate (5) through a pipe (8).

4. The freeze dryer for freeze-dried powder according to claim 3, characterized in that: The top surface of the jet plate (5) is connected to an adjacent storage platform (6) located above.

5. The freeze dryer for freeze-dried powder according to claim 1, characterized in that: The storage table (6) is provided with a square groove, and the bottom surface of the square groove is provided with crisscrossing transverse grooves and longitudinal grooves, and the transverse grooves and longitudinal grooves divide the square groove into four areas.

6. The freeze dryer for freeze-dried powder according to claim 5, characterized in that: The square groove is also provided with two intersecting oblique grooves extending along its diagonal line.

7. The freeze dryer for freeze-dried powder according to claim 6, characterized in that: A circular groove with the center of the square groove as the center and the side length of the square groove as the diameter is also opened in the square groove. The horizontal groove, the vertical groove and the oblique groove divide the circular groove into eight sector-shaped areas.

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