Layered vacuum freeze dryer for COFs material production

Abstract

The utility model discloses a layered vacuum freeze dryer for COFs material production, which comprises a dryer main body, a heater is fixedly arranged on the inner wall of the dryer main body, an L-shaped frame is fixedly arranged on the inner wall of the dryer main body, a supporting frame is arranged in the L-shaped frame in a lap joint mode, a fixing frame is fixedly arranged at the bottom of the supporting frame, and a plurality of air outlets are formed in the fixing frame. According to the layered vacuum freeze dryer for COFs material production, the rotating assembly drives the placement frame to move up and down, so that the placement frame drives a material to move up and down, large gaps can appear at the bottom of the material, water vapor discharge is accelerated, and the situation that the bottom of the material is attached to the inner wall of the placement frame in the drying process is prevented; the situation that the drying speed of the blocked part of the material is lower than that of the exposed part of the material and the overall drying speed is influenced is avoided, and the situation that the raw materials in the container are not thoroughly dried due to the fact that water vapor adhered between the material and the placing frame is difficult to be pumped away by a vacuum pump is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum freeze drying machines, in particular to a layered vacuum freeze drying machine for COFs material production. Background Art

[0002] COFs materials, whose Chinese name is covalent organic framework materials, are an emerging crystalline porous polymer material composed of organic molecules connected by covalent bonds. Covalent organic framework materials (COFs) are organic porous materials with an ordered crystalline structure and uniform pore size, so they are also called "organic zeolites". COFs have advantages such as low density, high specific surface area, easy modification and functionalization, so it has been widely studied in the fields of gas storage and separation, heterogeneous catalysis, energy storage materials, optoelectronics, sensing and drug delivery, and has shown excellent application prospects. COFs materials need to be freeze-dried during the production process, which is generally carried out using a layered vacuum freeze dryer for COFs material production.

[0003] However, in the existing layered vacuum freeze dryers used in the production of COFs materials, the material is in a static state during the drying process, and the bottom of the material is in contact with the inner wall of the placement frame, which causes the drying speed of the blocked part of the material to be lower than that of the exposed part, thereby affecting the overall drying speed. In addition, it is difficult for the water vapor adhering to the space between the material and the placement frame to be extracted by the vacuum pump, which may cause the raw materials in the container to be incompletely dried. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a layered vacuum freeze dryer for the production of COFs materials, which is used to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A layered vacuum freeze dryer for producing COFs materials comprises a dryer body, a heater is fixedly provided on the inner wall of the dryer body, an L-shaped frame is fixedly provided on the inner wall of the dryer body, a support frame is overlapped inside the L-shaped frame, a fixed frame is fixedly provided on the bottom of the support frame, a rotating component is arranged inside the fixed frame, a placement frame is arranged on the fixed frame via the rotating component, a fixed block is overlapped inside the placement frame, a limit component is arranged on the surface of the placement frame, and a vacuum component is arranged inside the dryer body.

[0007] Preferably, the rotating assembly includes a motor fixedly arranged inside a fixed frame, a threaded rod fixedly arranged at the output end of the motor, the threaded rod and the support frame are rotatably arranged, the surface of the threaded rod is threadedly arranged with an internal threaded sleeve, and the surface of the internal threaded sleeve is fixedly arranged with the inner wall of the placement frame.

[0008] Preferably, the limiting assembly comprises a slide groove provided on the surface of the placement rack, a limiting block is slidably arranged inside the slide groove, and the limiting block is fixedly arranged on the inner wall of the support frame.

[0009] Preferably, the vacuum assembly comprises a fixed pipe fixedly arranged on the inner wall of the dryer body, a vacuum pump is fixedly arranged at one end of the fixed pipe, and the vacuum pump is fixedly arranged on the top of the dryer body.

[0010] Preferably, a sealed door is hingedly provided inside the dryer body, and a handle is fixedly provided on the front side of the sealed door.

[0011] Preferably, supporting legs are fixedly provided at the bottom of the dryer body, and the number of the supporting legs is several and the several supporting legs are symmetrically distributed.

[0012] Preferably, there are several limit blocks, and all of the limit blocks are made of metal.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the layered vacuum freeze dryer for the production of COFs materials drives the placement rack to move up and down through the rotating component, so that the placement rack drives the material to move up and down, so that a larger gap can appear at the bottom of the material, which accelerates the discharge of water vapor and prevents the bottom of the material from fitting against the inner wall of the placement rack during the drying process, resulting in the blocked part of the material having a lower drying speed than the exposed part, thereby affecting the overall drying speed. It also avoids the difficulty of water vapor adhering to the material and the placement frame being extracted by the vacuum pump, which may cause the raw materials in the container to be incompletely dried. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the structural survey drawing of the utility model;

[0015] Figure 2 This is a front cross-sectional view of the structure of the utility model;

[0016] Figure 3 It is a side sectional view of the local structure of the utility model;

[0017] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0018] Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0019] In the figure: 1. Dryer body; 2. Heater; 3. L-shaped frame; 4. Support frame; 5. Fixed frame; 6. Motor; 7. Threaded rod; 8. Internal threaded sleeve; 9. Placement frame; 10. Fixed block; 11. Slide groove; 12. Limit block; 13. Fixed pipe; 14. Vacuum pump; 15. Sealing door; 16. Handle; 17. Support leg. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Reference Figure 1-5A layered vacuum freeze dryer for producing COFs materials includes a dryer body 1, a sealed door 15 is hingedly provided inside the dryer body 1, a handle 16 is fixedly provided on the front side of the sealed door 15, and the sealing door 15 and the handle 16 are provided to facilitate the isolation of the material from the outside and improve the drying speed, a heater 2 is fixedly provided on the inner wall of the dryer body 1, an L-shaped frame 3 is fixedly provided on the inner wall of the dryer body 1, a support frame 4 is overlapped inside the L-shaped frame 3, a fixed frame 5 is fixedly provided at the bottom of the support frame 4, a rotating assembly is provided inside the fixed frame 5, a placement frame 9 is provided on the fixed frame 5 through the rotating assembly, and the rotating assembly includes a motor 6 fixedly provided inside the fixed frame 5, A threaded rod 7 is fixedly provided at the output end of the motor 6, and the threaded rod 7 is rotatably provided with the support frame 4. The surface of the threaded rod 7 is threadedly provided with an internal threaded sleeve 8, and the surface of the internal threaded sleeve 8 is fixedly provided with the inner wall of the placement frame 9. The threaded rod 7 is driven by the motor 6 to rotate forward and reversely, so that the threaded rod 7 drives the internal threaded sleeve 8 to rotate forward and reversely, which is convenient for the placement frame 9 to drive the material to move up and down, avoiding the bottom from being fitted with the placement frame 9 and the fixed block 10. The internal overlap of the placement frame 9 is provided with a fixed block 10, and the surface of the placement frame 9 is provided with a limiting component, which includes a slide groove 11 opened on the surface of the placement frame 9, and a limiting block 12 is provided inside the slide groove 11 for sliding, and the limiting block 12 is fixedly provided with the inner wall of the support frame 4. The number of the limit blocks 12 is several, and the several limit blocks 12 are all made of metal material, which improves the structural strength of the limit blocks 12 and increases their service life. The stability of the placement rack 9 is improved by the arrangement of the slide slot 11 and the limit blocks 12, and the friction between the placement rack 9 and the support frame 4 is reduced. A vacuum component is arranged inside the dryer body 1, and the vacuum component includes a fixed pipe 13 fixedly arranged on the inner wall of the dryer body 1, and a vacuum pump 14 is fixedly arranged at one end of the fixed pipe 13, and the vacuum pump 14 is fixedly arranged on the top of the dryer body 1. The vacuum pump 14 cooperates with the fixed pipe 13 to accelerate the discharge of water vapor, thereby accelerating the drying speed. The bottom of the dryer body 1 is fixed A plurality of supporting legs 17 are provided, and the plurality of supporting legs 17 are symmetrically distributed. The layered vacuum freeze dryer for producing COFs materials drives the placement rack 9 to move up and down through a rotating assembly, so that the placement rack 9 drives the material to move up and down, so that a larger gap can appear at the bottom of the material, thereby accelerating the discharge of water vapor, and preventing the bottom of the material from fitting against the inner wall of the placement rack 9 during the drying process, resulting in the blocked part of the material having a lower drying speed than the exposed part, thereby affecting the overall drying speed. It is also avoided that the water vapor adhering to the material and the placement frame is difficult to be extracted by the vacuum pump 14, which may cause the raw materials in the container to be incompletely dried.

[0022] When in use: pull the handle 16 to open the sealed door 15, place the material on the top of the placement rack 9 and the fixing block 10, then close the sealed door 15, connect the power supply of the heater 2 so that the heater 2 heats the inside of the dryer body 1, start the vacuum pump 14, and discharge the air and water vapor inside the dryer body 1. At the same time, start the motor 6 to drive the threaded rod 7 to rotate forward or reverse, so that the threaded rod 7 drives the internal threaded sleeve 8 to move up and down, so that the internal threaded sleeve 8 drives the placement rack 9 to move up and down, so that a gap appears at the bottom of the material, thereby accelerating the drying speed.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A layered vacuum freeze dryer for producing COFs materials, comprising a dryer body (1), characterized in that: A heater (2) is fixedly arranged on the inner wall of the dryer body (1); an L-shaped frame (3) is fixedly arranged on the inner wall of the dryer body (1); a support frame (4) is overlapped inside the L-shaped frame (3); a fixed frame (5) is fixedly arranged at the bottom of the support frame (4); a rotating component is arranged inside the fixed frame (5); a placement frame (9) is arranged on the fixed frame (5) through the rotating component; a fixed block (10) is overlapped inside the placement frame (9); a limit assembly is arranged on the surface of the placement frame (9); and a vacuum assembly is arranged inside the dryer body (1).

2. A layered vacuum freeze dryer for COFs material production according to claim 1, characterized in that: The rotating assembly comprises a motor (6) fixedly arranged inside a fixed frame (5); a threaded rod (7) is fixedly arranged at the output end of the motor (6); the threaded rod (7) is rotatably arranged with a support frame (4); an internal threaded sleeve (8) is threadedly arranged on the surface of the threaded rod (7); and the surface of the internal threaded sleeve (8) is fixedly arranged with the inner wall of the placement frame (9).

3. A layered vacuum freeze dryer for COFs material production according to claim 1, characterized in that: The limiting assembly comprises a slide groove (11) provided on the surface of the placement frame (9), a limiting block (12) is slidably arranged inside the slide groove (11), and the limiting block (12) is fixedly arranged on the inner wall of the support frame (4).

4. The layered vacuum freeze dryer for producing COFs materials according to claim 1, characterized in that: The vacuum assembly comprises a fixed pipe (13) fixedly arranged on the inner wall of the dryer body (1), a vacuum pump (14) fixedly arranged at one end of the fixed pipe (13), and the vacuum pump (14) fixedly arranged on the top of the dryer body (1).

5. The layered vacuum freeze dryer for producing COFs materials according to claim 1, characterized in that: A sealed door (15) is hingedly provided inside the dryer body (1), and a handle (16) is fixedly provided on the front side of the sealed door (15).

6. A layered vacuum freeze dryer for COFs material production according to claim 1, characterized in that: A supporting leg (17) is fixedly arranged at the bottom of the dryer body (1), and there are a plurality of supporting legs (17), and the plurality of supporting legs (17) are symmetrically distributed.

7. A layered vacuum freeze dryer for COFs material production according to claim 3, characterized in that: The number of the limit blocks (12) is several, and the several limit blocks (12) are all made of metal material.

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