Freeze drying device for composite carbon source production

Abstract

The utility model discloses a freeze-drying device for producing a composite carbon source, which comprises a drying box, a sealing box door is arranged on the surface of the drying box, a bearing plate is arranged in the drying box, a refrigerating coil and an electric heating coil which are matched with each other are arranged in the bearing plate in a winding manner, and the end part of the refrigerating coil is connected with a refrigerating unit. Cold air pipes and hot air pipes are evenly arranged on the two sides and the back of the inner wall of the drying box at intervals, an air cooler is connected with the cold air pipes, an air heater is connected with the hot air pipes, a plurality of air blowing openings are formed in the cold air pipes and the hot air pipes, vacuumizing pipes are arranged on the drying box and matched with the bearing plates, and vacuumizing pumps are connected to the vacuumizing pipes. According to the drying box, the refrigerating and heating uniformity in the drying box can be improved, the freezing and heating sublimation efficiency of a composite carbon source in the drying box is improved, and the drying effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite carbon source production, and more specifically, to a freeze drying device for composite carbon source production. Background Art

[0002] Composite carbon source is a chemical agent used in sewage treatment system, which is mainly used to provide the carbon source required for the growth of microorganisms in sewage denitrification biochemical system to promote the biological treatment process.

[0003] In the production process of the composite carbon source, the composite carbon source needs to be dried by a freeze dryer so that the composite carbon source is in powder form, which is convenient for storage and transportation of the composite carbon source.

[0004] In the prior art, in the process of freezing and heating the composite carbon source raw material inside the freeze dryer for sublimation, the drying chamber and the freezing chamber are generally set separately, which makes it inconvenient to manually transfer the composite carbon source after freeze drying, and the frozen composite carbon source may be contaminated during the transfer process;

[0005] In addition, the structure used for heating the composite carbon source during the drying process in the prior art is relatively simple, mainly by heating the bottom of the supporting tray, and the heat is conducted upward from the bottom, the thermal conductivity efficiency is poor, and the heating uniformity for the frozen composite carbon source is poor, thereby affecting the sublimation effect and efficiency of the water in the frozen composite carbon source. Summary of the invention

[0006] In view of the problems existing in the prior art, the utility model provides a freeze-drying device for producing a composite carbon source to solve the technical problems mentioned in the background technology that the freeze-drying device for producing a composite carbon source in the prior art performs freezing and drying separately, requires manual transportation in the middle, and has poor heating uniformity and low efficiency.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A freeze drying device for producing a composite carbon source comprises a drying box, wherein a sealed box door is arranged on the surface of the drying box, a carrying plate is arranged inside the drying box, a refrigeration coil and an electric heating coil are arranged in a winding manner inside the carrying plate, and a refrigeration unit is connected to the end of the refrigeration coil, cold air ducts and hot air ducts are evenly spaced on both sides of the inner wall and the back of the drying box, a cold air blower is arranged in connection with the cold air duct, and a hot air blower is arranged in connection with the hot air duct, and a plurality of blowing ports are arranged on the cold air duct and the hot air duct, and a vacuum pipe is arranged on each layer of the carrying plate on the drying box, and a vacuum pump is connected to the vacuum pipe.

[0009] The utility model is further configured that a support column is provided at the bottom end of the drying box, a universal wheel is provided at the bottom end of the support column, a fixing sleeve is provided on the outer thread of the support column, and the fixing sleeve cover is provided on the outer side of the universal wheel to facilitate the overall movement and fixation.

[0010] The utility model is further configured that an equipment box is arranged on the drying box, and the equipment box cover is arranged on the outside of the refrigeration unit, the cold air fan and the hot air fan to strengthen the protection of the refrigeration unit, the cold air fan and the hot air fan.

[0011] The utility model is further configured that a carrying tray is arranged on the carrying plate, and the carrying tray is used for loading the composite carbon source.

[0012] The utility model is further configured that a mounting shaft is provided on the side of the drying box, a limiting frame is rotatably mounted on the mounting shaft through a bearing, and a door locking structure is provided on the limiting frame to cooperate with the sealed door to enhance the sealing effect of the sealed door on the drying box.

[0013] The utility model is further configured that the door locking structure includes a locking column threadedly arranged on the limit frame, the inner end of the locking column is provided with a pressing block, and the outer end is provided with a locking handle, so as to realize the pressing and fixing of the sealed door on the drying box.

[0014] The utility model is further configured that the top and bottom ends of the bearing plate are both connected to the refrigeration coil and the electric heating coil and are provided with heat conducting plates to enhance the heat exchange and heat conduction performance of the bearing plate.

[0015] The utility model is further configured that the air inlet ends of the cold air blower and the hot air blower are provided with air inlet pipes, and a dustproof net group is provided in the air inlet pipe to improve the cleanliness of the incoming air.

[0016] Compared with the prior art, the utility model provides a freeze-drying device for producing a composite carbon source, which has the following beneficial effects:

[0017] 1. The utility model distributes refrigeration coils and electric heating coils alternately inside the carrier plate, so that the carbon source raw materials can be cooled and heated in the same space, reducing the intermediate transportation links, improving the drying efficiency and avoiding the contamination of the composite carbon source during the transportation process.

[0018] 2. The utility model is provided with cold air ducts and hot air ducts at even intervals on both sides of the inner wall and the back of the drying box, and a cold air blower is provided to connect the cold air duct, and a hot air blower is provided to connect the hot air duct. A plurality of air blowing ports are provided on the cold air duct and the hot air duct. In the process of cooling or heating the inside of the drying box, the cold air duct can be used to assist the refrigeration coil to cool the inside of the drying box, thereby improving the freezing efficiency of the composite carbon source, and the hot air duct can be used to assist the electric heating coil to heat the inside of the drying box, thereby improving the sublimation efficiency of the composite carbon source after freezing, and the cooling and heating uniformity inside the drying box can be improved.

[0019] 3. A vacuum tube is provided on each layer of the carrier plate of the drying box, and a vacuum pump is connected to the vacuum tube. In this way, under the action of the vacuum pump, the interior of the drying box can be evacuated through multiple groups of vacuum tubes, which can improve the vacuum efficiency and vacuum uniformity inside the drying box and ensure the sublimation uniformity of the composite carbon source during the sublimation process inside the drying box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a freeze-drying device for producing a composite carbon source in the utility model;

[0021] Figure 2 It is a schematic diagram of the overall structure decomposition of the utility model;

[0022] Figure 3 It is a schematic cross-sectional view of the overall structure of the utility model;

[0023] Figure 4 It is a cross-sectional schematic diagram of the connection structure between the load-bearing plate, the refrigeration coil and the electric heating coil in the utility model;

[0024] Figure 5 It is a schematic diagram of the connection structure between the limit frame, the locking column and the pressing block in the utility model;

[0025] Figure 6 It is a cross-sectional schematic diagram of the connection structure among the support column, the universal wheel and the fixing sleeve in the utility model.

[0026] In the figure: 1. Drying box; 2. Sealed box door; 3. Loading plate; 4. Refrigeration coil; 5. Electric heating coil; 6. Refrigeration unit; 7. Cold air duct; 8. Hot air duct; 9. Cold air blower; 10. Hot air blower; 11. Blowing port; 12. Vacuum tube; 13. Vacuum pump; 14. Support column; 15. Universal wheel; 16. Fixed sleeve; 17. Equipment box; 18. Loading tray; 19. Mounting shaft; 20. Limiting frame; 21. Locking column; 22. Pressing block; 23. Locking handle; 24. Heat conduction plate; 25. Air inlet duct; 26. Dustproof net group. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0029] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0030] See also Figure 1-6 A freeze-drying device for producing a composite carbon source comprises a drying box 1, a sealed box door 2 is arranged on the surface of the drying box 1, a carrying plate 3 is arranged inside the drying box 1, and a refrigeration coil 4 and an electric heating coil 5 are arranged in a winding manner inside the carrying plate 3. The heating principle of the electric heating coil 5 is well known in the prior art, and the specific circuit connection structure is not described in detail in the utility model. The end of the refrigeration coil 4 is connected to a refrigeration unit 6, and the refrigeration unit 6 is used to realize the circulation and cooling of the cooling medium in the refrigeration coil. Flow, cold air ducts 7 and hot air ducts 8 are evenly spaced on both sides of the inner wall and the back of the drying box 1, and a cold air fan 9 is connected to the cold air duct 7, and a hot air fan 10 is connected to the hot air duct 8, wherein the cold air fan 9 is connected to the cold air duct 7 through a pipeline structure, and the hot air fan 10 is connected to the hot air duct 8 through a pipeline structure, and a plurality of blowing ports 11 are provided on the cold air duct 7 and the hot air duct 8, and a vacuum pipe 12 is provided on the drying box 1 to cooperate with each layer of the carrying plate 3, and a vacuum pump 13 is connected to the vacuum pipe 12.

[0031] In this embodiment, the utility model distributes refrigeration coils 4 and electric heating coils 5 alternately inside the carrier plate 3, so that the carbon source raw materials can be cooled and heated in the same space, reducing the intermediate transportation links, improving the drying efficiency, and avoiding the contamination of the composite carbon source during the transportation process.

[0032] More specifically, the utility model is provided with cold air ducts 7 and hot air ducts 8 at even intervals on both sides of the inner wall and the back of the drying box 1, and a cold air blower 9 is provided to connect the cold air duct 7, and a hot air blower 10 is provided to connect the hot air duct 8, and a plurality of blowing ports 11 are provided on both the cold air duct 7 and the hot air duct 8;

[0033] In this way, in the process of cooling or heating the interior of the drying box 1, the cold air duct 7 can be used to assist the refrigeration coil 4 to cool down the interior of the drying box 1, thereby improving the freezing efficiency of the composite carbon source, and the hot air duct 8 can be used to assist the electric heating coil 5 to heat the interior of the drying box 1, thereby improving the sublimation efficiency of the composite carbon source after freezing, and the refrigeration and heating uniformity inside the drying box 1 can be improved.

[0034] Furthermore, a vacuum tube 12 is provided on the drying box 1 in conjunction with each layer of the carrier plate 3, and a vacuum pump 13 is connected to the vacuum tube 12. Thus, under the action of the vacuum pump 13, the interior of the drying box 1 can be evacuated through multiple groups of vacuum tubes 12, thereby improving the vacuum efficiency and uniformity of the interior of the drying box 1 and ensuring the sublimation uniformity of the composite carbon source during the sublimation process inside the drying box 1.

[0035] See also Figure 1 and Figure 6 As an implementation of the drying box 1: a support column 14 is provided at the bottom end of the drying box 1, a universal wheel 15 is provided at the bottom end of the support column 14, a fixing sleeve 16 is provided on the outer thread of the support column 14, and the fixing sleeve 16 is covered on the outer side of the universal wheel 15.

[0036] Specifically, the provision of the universal wheel 15 can improve the overall mobility. After moving to a suitable position, the fixing sleeve 16 is screwed to move the fixing sleeve 16 downward on the support column 14. The fixing sleeve 16 can provide stable support for the support column 14, thereby improving the stability of the drying box 1 during use.

[0037] See also Figure 1 and Figure 2 As an implementation of the drying box 1 , a device box 17 is provided on the drying box 1 , and the device box 17 is covered on the outside of the refrigeration unit 6 , the cold air blower 9 and the hot air blower 10 .

[0038] Specifically, the installation and protection of the refrigeration unit 6 , the cold air blower 9 and the hot air blower 10 can be achieved through the equipment box 17 .

[0039] See also Figure 1 and Figure 5 As an implementation of the carrying plate 3: a carrying tray 18 is provided on the carrying plate 3, and the carrying tray 18 is used for loading the composite carbon source.

[0040] See also Figure 1 and Figure 4As an implementation of the drying box 1: a mounting shaft 19 is provided on the side of the drying box 1, a limit frame 20 is rotatably installed on the mounting shaft 19 through a bearing, a door locking structure is provided on the limit frame 20 to cooperate with the sealed door 2, and the door locking structure includes a locking column 21 threadedly arranged on the limit frame 20, a pressing block 22 is provided at the inner end of the locking column 21, and a locking handle 23 is provided at the outer end.

[0041] Specifically, in the present invention, there is a protective lock structure in the prior art between the sealed box door 2 and the drying box 1, which is the prior art and will not be described in detail in the present invention;

[0042] After the sealed box door 2 is closed by the protective lock structure, the limit frame 20 is rotated so that the limit frame 20 is located on the outside of the sealed box door 2, and the locking handle 23 is tightened so that the locking handle 23 can drive the locking column 21 to rotate, and the locking column 21 drives the pressing block 22 to move, so that the pressing block 22 can press the sealed box door 2, thereby improving the sealing effect of the sealed box door 2 on the drying box 1 and ensuring the sealing of the drying box 1 when the inside is vacuumed.

[0043] See also Figure 4 As an implementation of the bearing plate 3 : the top and bottom ends of the bearing plate 3 are both connected to the refrigeration coil 4 and the electric heating coil 5 and are provided with a heat conducting plate 24 .

[0044] Specifically, the heat conducting plate 24 can enhance the heat conducting effect of the refrigeration coil 4 and the electric heating coil 5 on the carrier plate 3 during cooling and heating, thereby achieving rapid freezing and heating of the composite carbon source raw material in the carrier tray 18 .

[0045] See also Figure 2 As an implementation of the cold air fan 9 and the hot air fan 10 , an air inlet pipe 25 is provided at the air inlet end of the cold air fan 9 and the hot air fan 10 , and a dustproof net group 26 is provided in the air inlet pipe 25 .

[0046] Specifically, the dustproof net group 26 can be provided to enhance the cleanliness of the air intake of the cold air blower 9 and the hot air blower 10 .

[0047] In summary, when the overall equipment is in use:

[0048] Open the sealed box door 2, load the composite carbon source to be dried through the carrying tray 18 and place it on the carrying plate 3, close the sealed box door 2, and rotate the limiting frame 20 so that the limiting frame 20 is located outside the sealed box door 2, tighten the locking handle 23 so that the locking handle 23 can drive the locking column 21 to rotate, and the locking column 21 drives the pressing block 22 to move, so that the pressing block 22 can press the sealed box door 2, thereby improving the sealing effect of the sealed box door 2 on the drying box 1, and ensuring the sealing of the drying box 1 when the inside is evacuated;

[0049] Afterwards, when it is necessary to freeze the composite carbon source, the cooling medium is circulated in the cooling coil by the refrigeration unit 6, and the composite carbon source raw material in the carrying tray 18 is cooled and frozen by the heat exchange performance of the heat conducting plate 24; at the same time, the air cooler 9 is started, and the cold air can be evenly blown into the drying box 1 through the cold air pipe 7 and the cold air outlet by the air cooler 9, thereby enhancing the freezing effect and efficiency of the composite carbon source in the drying box 1;

[0050] During this process, the interior of the drying box 1 can be evacuated by the vacuum pump 13, so that the original high-temperature airflow inside the drying box 1 can be evenly drawn out to improve the freezing effect of the composite carbon source inside the drying box 1;

[0051] When the frozen composite carbon source needs to be heated and sublimated, the refrigeration unit 6 is operated at the same time, and the electric heating coil 5 is started, and the bottom of the carrying tray 18 can be heated by the electric heating coil 5. At the same time, the heat of the heating coil can be transferred downward under the action of the heat conducting plate 24 at the bottom of the carrying plate 3, so that the heating effect and heating uniformity of the frozen composite carbon source can be improved;

[0052] At the same time, the hot air flow can be uniformly delivered to the drying box 1 through the hot air pipe 8 and the blow outlet by the hot air blower 10, so that the electric heating coil 5 can be assisted to heat the inside of the drying box 1, thereby improving the heating effect and heating uniformity of the frozen composite carbon source;

[0053] During this process, the vacuum pump 13 is controlled to cooperate with the vacuum pipe 12 so that the interior of the drying box 1 is in a vacuum state, thereby enhancing the sublimation effect of the frozen composite carbon source and improving the freeze-drying efficiency of the composite carbon source.

[0054] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A freeze-drying device for producing a composite carbon source, comprising a drying box (1), a sealed box door (2) being arranged on the surface of the drying box (1), and a carrying plate (3) being arranged inside the drying box (1), wherein: The interior of the support plate (3) is provided with a refrigeration coil (4) and an electric heating coil (5) that cooperate with each other in a winding manner, and the end of the refrigeration coil (4) is connected to a refrigeration unit (6). Cold air ducts (7) and hot air ducts (8) are evenly spaced on both sides of the inner wall and the back of the drying box (1), and a cold air fan (9) is provided in connection with the cold air duct (7), and a hot air fan (10) is provided in connection with the hot air duct (8). A plurality of blowing ports (11) are provided on the cold air duct (7) and the hot air duct (8). The drying box (1) is provided with a vacuum pipe (12) in coordination with each layer of the support plate (3), and the vacuum pipe (12) is connected to a vacuum pump (13).

2. A freeze-drying device for producing a composite carbon source according to claim 1, characterized in that: A support column (14) is provided at the bottom end of the drying box (1), a universal wheel (15) is provided at the bottom end of the support column (14), a fixing sleeve (16) is provided on the outer thread of the support column (14), and the fixing sleeve (16) is covered on the outer side of the universal wheel (15).

3. A freeze-drying device for producing a composite carbon source according to claim 1, characterized in that: The drying box (1) is provided with an equipment box (17), and the equipment box (17) is covered on the outside of the refrigeration unit (6), the cold air blower (9) and the hot air blower (10).

4. A freeze-drying device for producing a composite carbon source according to claim 1, characterized in that: A carrying tray (18) is provided on the carrying plate (3), and the carrying tray (18) is used for loading the composite carbon source.

5. A freeze-drying device for producing a composite carbon source according to any one of claims 1 to 4, characterized in that: A mounting shaft (19) is provided on the side of the drying box (1), a limiting frame (20) is rotatably mounted on the mounting shaft (19) via a bearing, and a door locking structure is provided on the limiting frame (20) in cooperation with the sealed box door (2).

6. A freeze-drying device for producing a composite carbon source according to claim 5, characterized in that: The door locking structure comprises a locking column (21) threadedly arranged on a limiting frame (20), a pressing block (22) being arranged at the inner end of the locking column (21), and a locking handle (23) being arranged at the outer end.

7. A freeze-drying device for producing a composite carbon source according to claim 1, characterized in that: The top and bottom ends of the bearing plate (3) are both connected to the refrigeration coil (4) and the electric heating coil (5) and are provided with heat conducting plates (24).

8. The freeze-drying device for producing a composite carbon source according to claim 1, characterized in that: An air inlet pipe (25) is provided at the air inlet end of the cold air blower (9) and the hot air blower (10), and a dustproof net group (26) is provided inside the air inlet pipe (25).

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