Industrial enzyme preparation test freeze-drying device with circulation guide
By introducing a circulating flow guiding structure into the freeze-drying device and optimizing the airflow path using a limiting inner frame and a flow divider, the problem of uneven drying of enzyme preparations was solved, achieving efficient and uniform freeze-drying results and ensuring enzyme activity and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN AOGUAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-05-01
AI Technical Summary
In traditional freeze-drying equipment, uneven temperature and airflow distribution in the drying chamber lead to inconsistent drying rates of enzyme preparations, affecting product quality uniformity. Furthermore, the sublimated water is not condensed in time, impacting drying efficiency.
The industrial enzyme preparation test freeze-drying device adopts circulation guidance. It uses a semiconductor refrigerator for cooling and utilizes the limiting inner frame, flow guide block and flow divider block to form circulation in the heat preservation shell to ensure that the cold air acts evenly on the enzyme preparation in the reagent rack. Combined with the design of inclined opening and flow divider block, the airflow path is optimized, resistance is reduced and the cold volume is reasonably distributed.
This method achieves uniform freeze-drying of enzyme preparations, improves freeze-drying efficiency and quality, maximizes the preservation of enzyme activity, and avoids water vapor condensation affecting product quality.
Smart Images
Figure CN224188873U_ABST
Abstract
Description
A test freeze-drying device for industrial enzyme preparations equipped with circulation guidance Technical Field
[0001] This utility model relates to the technical field of industrial enzyme preparation production equipment, specifically an industrial enzyme preparation experimental freeze-drying device equipped with circulation guidance. Background Technology
[0002] Industrial enzyme preparations refer to biological products with catalytic functions after enzymes have been purified and processed. They are widely used in many fields such as food, textiles, feed, detergents, papermaking, leather, medicine, energy development, and environmental protection. Drying is an important step in the production and manufacturing process of enzyme preparations. Because enzymes have biological activity, their activity is easily affected by environmental factors such as temperature and humidity. Although ordinary direct drying and vacuum drying can remove moisture, problems such as excessively high temperature or uneven drying can lead to a decrease in enzyme activity. Freeze drying is a more ideal drying method.
[0003] In practical applications of traditional freeze-drying equipment, uneven temperature and airflow distribution within the drying chamber lead to inconsistent drying rates of enzyme preparations, with some areas being over-dried and others under-dried, affecting the uniformity of product quality. Furthermore, if the water sublimated from the material is not promptly removed and condensed during the sublimation process, it will re-condense within the drying chamber, interfering with the drying process and reducing drying efficiency. Summary of the Invention
[0004] The purpose of this invention is to provide an industrial enzyme preparation test freeze-drying device with circulating flow guidance, in order to solve the problems mentioned in the background art, such as the uneven temperature and airflow distribution in the drying chamber, which leads to inconsistent drying speed of enzyme preparations, affecting the uniformity of product quality, and the problem that if the water sublimated from the material cannot be removed and condensed in time during the sublimation process, it will re-condense in the drying chamber.
[0005] To achieve the above objectives, the present invention provides the following technical solution: an industrial enzyme preparation test freeze-drying device with circulating guidance, comprising an insulated shell, which is a rectangular box formed by welding metal plates and an insulation layer, wherein semiconductor coolers are fixedly installed on both sides of the insulated shell, and a sealing cap is placed in the opening at the upper end of the insulated shell, and the semiconductor cooler serves as the main refrigeration component of the industrial enzyme preparation test freeze-drying device.
[0006] The feature is that: a limiting inner frame is installed inside the heat insulation shell, and the limiting inner frame divides the internal space of the heat insulation shell into an outer ring and an inner cavity; a positioning frame is engaged and connected to the bottom of the inside of the heat insulation shell; the side wall of the positioning frame abuts against the surface of the limiting filter; and the limiting filter is nested and installed in close contact with the inner wall of the limiting inner frame.
[0007] The upper end of the positioning frame is engaged with an outlet pipe, and the upper end of the positioning frame is rotatably connected with four connecting screws. The connecting screws pass through the reagent placement rack, and the reagent placement rack is set above the positioning frame. The outer wall of the limiting inner frame is engaged with two diversion blocks, and the outer wall of the limiting inner frame abuts against the surface of the drainage block. The drainage block and the diversion block are respectively set on two adjacent surfaces of the limiting inner frame, and the drainage block passes through the heat insulation shell and is engaged with the side wall of the connecting pipe. The top end of the connecting pipe is engaged with one end of the diversion pipe, and the diversion pipe is a three-way pipe.
[0008] The cold air generated by the semiconductor refrigerator is guided by the limiting inner frame, the flow guide block and the flow divider block to form a circulation in the heat preservation shell, so as to uniformly freeze-dry the industrial enzyme preparation in the reagent rack.
[0009] By adopting the above technical solution, cold air is guided to form a circulation to uniformly freeze-dry industrial enzyme preparations, thereby improving freeze-drying efficiency and quality and preserving enzyme activity to the greatest extent.
[0010] Preferably, the sealing cap is penetrated by the outlet pipe and the connecting screws, and the four connecting screws are divided into two groups, with each group of connecting screws arranged parallel to the outlet pipe.
[0011] With the above technical solution, the sealing cap is penetrated by the outflow pipe and the connecting screw, and the connecting screw is arranged in groups parallel to the outflow pipe to ensure the accuracy and stability of the sealing cap installation.
[0012] Preferably, each side of the limiting inner frame has an inclined opening, and the inclination of the inclined opening of the limiting inner frame is aligned with the inclination of the surfaces of the diverting block and the guiding block.
[0013] By adopting the above technical solution, the alignment of the tilt angle optimizes the flow path of the cold air, reduces airflow resistance, and enables the cold air to form a smoother circulation within the device, further improving the uniformity and efficiency of freeze drying.
[0014] Preferably, four positioning rods are fixedly installed on the upper end of the positioning frame, and the four positioning rods pass through the reagent placement frame.
[0015] Using the above technical solution, the positioning rod at the upper end of the positioning frame passes through the reagent placement rack, providing additional positioning and support for the reagent placement rack and preventing it from shaking or shifting during the freeze-drying process.
[0016] Preferably, the surface of the outflow tube is provided with a circular hole, and a damping ring is provided at the connection between the outflow tube and the reagent holder.
[0017] Using the above technical solution, the round holes on the surface of the outlet tube help cold air flow out of the outlet tube to freeze-dry the enzyme preparations in the reagent rack.
[0018] Preferably, the diversion block is disposed in the outer ring formed by the insulation shell and the limiting inner frame, and the cross-section of the diversion block is a parallelogram, and a gap is left between the diversion block and the inner wall surface of the insulation shell.
[0019] By adopting the above technical solution, the flow divider is set in the outer ring formed by the heat insulation shell and the limiting inner frame, which effectively guides the flow of cold air in the outer ring space, rationally distributes the cold energy, promotes the formation of cold air circulation, and improves the freeze-drying effect.
[0020] Preferably, the drainage block has an L-shaped opening inside, and the surface of the drainage block abuts against the heat insulation shell and the limiting inner frame, and the L-shaped opening of the drainage block connects the connecting pipe and the diversion pipe.
[0021] By adopting the above technical solution, the L-shaped opening inside the diversion block connects the connecting pipe and the distribution pipe, realizing the smooth transmission and distribution of cold air from the outer ring space to the connecting pipe and the distribution pipe, ensuring the continuity and stability of the cold air circulation, and providing a strong guarantee for the uniform freeze-drying of industrial enzyme preparations.
[0022] Compared with the prior art, the beneficial effects of this utility model are: it is equipped with a circulating-guided industrial enzyme preparation test freeze-drying device.
[0023] 1. By using a semiconductor cooler for cooling, the cold air is guided to form a circulation within the insulation shell by the limiting inner frame, the guide block, and the diverter block. This allows the cold air to act uniformly on the industrial enzyme preparations in the reagent rack in a circulating manner. Furthermore, the inclined openings on each side of the limiting inner frame are aligned with the inclination of the diverter block and the guide block, making the flow of cold air within the device smoother, reducing airflow resistance, further enhancing the cold air circulation effect, and improving freeze-drying efficiency and uniformity. Due to the parallelogram cross-section of the diverter block and the gap with the inner wall of the insulation shell, the cold air is effectively guided to flow in the outer ring space formed by the insulation shell and the limiting inner frame, thus rationally distributing the cooling capacity.
[0024] 2. The positioning frame is engaged with the bottom of the insulation shell, and four positioning rods pass through the reagent rack to provide stable support and precise positioning. The connecting screw is rotatably connected to the positioning frame and passes through the reagent rack, facilitating the adjustment of the reagent rack's position and ensuring that it does not shake during the freeze-drying process, thus guaranteeing the stability of the entire device structure. The damping ring installed at the connection between the outlet pipe and the reagent rack not only prevents cold air from leaking out of the connection, but also connects to the circulation pump through a hole inside the outlet pipe, allowing the sublimated water during freeze-drying to be discharged through the hole in the outlet pipe, preventing residual water vapor from re-condensing and affecting the quality of the freeze-dried reagents. Attached Figure Description
[0025] Figure 1 is a schematic diagram of the overall external three-dimensional structure of this utility model;
[0026] Figure 2 is a three-dimensional structural diagram of the installation of the thermal insulation shell and the limiting inner frame of this utility model.
[0027] Figure 3 is a three-dimensional structural diagram of the installation position of the limiting inner frame and the reagent placement rack of this utility model;
[0028] Figure 4 is a schematic diagram of the overall internal cross-sectional three-dimensional structure of this utility model;
[0029] Figure 5 is a schematic diagram of the overall internal side section of the present invention.
[0030] Figure 6 is a side-sectional three-dimensional structural diagram of the installation of the limiting inner frame and reagent placement rack of this utility model.
[0031] In the diagram: 1. Insulation shell; 2. Semiconductor cooler; 3. Sealing cap; 4. Limiting inner frame; 5. Positioning frame; 6. Outflow tube; 7. Connecting screw; 8. Reagent rack; 9. Limiting filter; 10. Diverter block; 11. Drain block; 12. Connecting tube; 13. Diverter tube; 14. Positioning rod. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] Please refer to Figures 1-6. This utility model provides a technical solution: an industrial enzyme preparation test freeze-drying device with circulation guidance, including an insulated shell 1, a semiconductor cooler 2, a sealing cover 3, a limiting inner frame 4, a positioning frame 5, an outlet pipe 6, a connecting screw 7, a reagent placement rack 8, a limiting filter screen 9, a diverting block 10, a guiding block 11, a connecting pipe 12, a diverting pipe 13, and a positioning rod 14;
[0034] Among them, the heat-insulating shell 1 is a rectangular box made of metal plate and heat-insulating layer welded together. Semiconductor coolers 2 are fixedly installed on both sides of the heat-insulating shell 1, and a sealing cover 3 is placed in the opening at the top of the heat-insulating shell 1. The semiconductor cooler 2 is the main refrigeration component of the industrial enzyme preparation test freeze-drying device.
[0035] The sealing cover 3 is penetrated by the outlet pipe 6 and the connecting screw 7, and the four connecting screws 7 are divided into two groups, with each group of connecting screws 7 arranged parallel to the outlet pipe 6;
[0036] A limiting inner frame 4 is installed inside the insulation shell 1, and the limiting inner frame 4 divides the internal space of the insulation shell 1 into an outer ring and an inner cavity. A positioning frame 5 is engaged and connected to the bottom of the insulation shell 1, and the side wall of the positioning frame 5 abuts against the surface of the limiting filter 9. The limiting filter 9 is nested and installed against the inner wall of the limiting inner frame 4. Each side of the limiting inner frame 4 has an inclined opening, and the inclination of the inclined opening of the limiting inner frame 4 is aligned with the inclination of the diverting block 10 and the guiding block 11. The diverting block 10 is set in the outer ring formed by the insulation shell 1 and the limiting inner frame 4, and the cross section of the diverting block 10 is a parallelogram. A gap is left between the diverting block 10 and the inner wall of the insulation shell 1.
[0037] Referring to Figures 1-6 in the accompanying drawings, the metal plate and the insulation layer are welded together to form a rectangular insulation shell 1, ensuring a good seal at the weld joint and no potential heat leakage. Semiconductor coolers 2 are fixedly installed on both sides of the insulation shell 1, with the cooling surface of the semiconductor coolers 2 facing inwards. The semiconductor coolers 2, air pump, and other equipment are electrically connected to the corresponding power supply and control system. A positioning frame 5 is engaged at the bottom inside the insulation shell 1, ensuring stable and accurate installation. The limiting filter 9 is nested against the inner wall of the limiting inner frame 4, so that it is aligned with the side wall of the positioning frame 5. The surfaces are tightly abutted together. A limiting inner frame 4 is installed inside the insulation shell 1, so that the limiting inner frame 4 accurately divides the internal space of the insulation shell 1 into an outer ring and an inner cavity, as shown in Figure 2. The diverter block 10 is snapped onto the outer wall of the limiting inner frame 4 to ensure that the diverter block 10 is firmly installed. Its parallelogram cross-section leaves a suitable gap with the inner wall of the insulation shell 1 to ensure smooth airflow. The diverter block 11 is abutted against the outer wall of the limiting inner frame 4 and is snapped onto the side wall of the connecting pipe 12 through the insulation shell 1. The top end of the connecting pipe 12 is snapped onto one end of the diverter pipe 13 to ensure that all components are tightly connected and that there is no leakage in the airflow channel.
[0038] Connect the outlet pipe 6 to the upper end of the positioning frame 5. Install a damping ring at the connection between the outlet pipe 6 and the reagent placement rack 8 to ensure that the damping ring is installed in place. This will prevent cold air leakage and stabilize the connection of the components. Connect the outlet pipe 6 to the circulating air pump through a pipe. During the freeze-drying of the reagent, the air pump will draw out cold air containing sublimated water through the round hole on the surface of the outlet pipe 6 to prevent water vapor from accumulating in the heat preservation shell 1 and affecting the freeze-drying quality of industrial enzyme preparations.
[0039] The upper end of the positioning frame 5 is engaged with an outlet pipe 6, and four connecting screws 7 are rotatably connected to the upper end of the positioning frame 5. Four positioning rods 14 are fixedly installed on the upper end of the positioning frame 5, and the four positioning rods 14 penetrate the reagent holder 8. The connecting screws 7 penetrate the reagent holder 8, and the reagent holder 8 is positioned above the positioning frame 5. A circular hole is opened on the surface of the outlet pipe 6, and a damping ring is provided at the connection between the outlet pipe 6 and the reagent holder 8. The outer wall of the limiting inner frame 4 is engaged with two diverter blocks 10, and the outer wall of the limiting inner frame 4 is engaged with two diverter blocks 10. The wall surface abuts against the surface of the diversion block 11. The diversion block 11 and the diversion block 10 are respectively set on two adjacent surfaces of the limiting inner frame 4. The diversion block 11 penetrates the insulation shell 1 and is snapped into the side wall of the connecting pipe 12. The top end of the connecting pipe 12 is snapped into one end of the diversion pipe 13. The diversion pipe 13 is a three-way pipe. An L-shaped opening is provided inside the diversion block 11. The surface of the diversion block 11 abuts against the insulation shell 1 and the limiting inner frame 4 respectively. The L-shaped opening of the diversion block 11 connects the connecting pipe 12 and the diversion pipe 13.
[0040] Referring to Figures 1-6 in the accompanying drawings, place the industrial enzyme preparation to be freeze-dried in the reagent rack 8, ensuring even distribution and avoiding accumulation that could affect the freeze-drying effect. Adjust the reagent rack 8 to the appropriate position by rotating the connecting screw 7 and the positioning frame 5. Simultaneously, use the four positioning rods 14 at the upper end of the positioning frame 5 to penetrate the reagent rack 8 for precise positioning and ensure its stable placement. Then, place the sealing cap 3 into the opening at the upper end of the insulation shell 1, ensuring that the sealing cap 3 is penetrated by the outflow pipe 6 and the connecting screw 7. Ensure that the four connecting screws 7 are grouped and parallel to the outflow pipe 6. Tighten the connecting screws 7 to ensure a good seal between the sealing cap 3 and the insulation shell 1, reducing the leakage of cold air and the entry of external heat.
[0041] By connecting the power supply to the semiconductor cooler 2, the semiconductor cooler 2 is started to cool and generate low-temperature cold air as the cold source for the freeze-drying process. The air pump connected to the distribution pipe 13 is started, and the air pump causes the gas to pass through the connecting pipe 12 and flow into the outer ring space between the heat preservation shell 1 and the limiting inner frame 4 through the L-shaped opening inside the guide block 11. During the flow, the gas comes into contact with the cold source generated by the semiconductor cooler 2 to form cold air. The cold air flows along the outer ring space to the distribution block 10 and is guided by the distribution block 10 to be divided into two streams. One stream flows in the outer ring space and is eventually introduced into the reagent rack 8 by the inclined surface of the other distribution block 10. The other stream goes directly into the reagent rack 8 along the inclined surface of the distribution block 10, so that the reagent rack 8 receives cold air from four directions, so that the cold air flows evenly through the industrial enzyme preparation. When the moisture content in the enzyme preparation reaches the specified drying standard, the air pump is turned off to stop the gas circulation, and then the semiconductor cooler 2 is turned off to stop the cooling. The sealing cap 3 is slowly opened and the freeze-dried enzyme preparation sample is taken out for subsequent processing.
[0042] Working principle: When using this industrial enzyme preparation test freeze-drying device with circulation guidance, the industrial enzyme preparation is placed in the reagent rack 8. The reagent rack 8 is rotatably connected to the positioning frame 5 through the connecting screw 7, which can be easily adjusted. At the same time, the four positioning rods 14 at the upper end of the positioning frame 5 pass through the reagent rack 8 to play a positioning role and ensure that the reagent rack 8 is placed stably. Finally, the sealing cover 3 is placed in the upper opening of the heat preservation shell 1 and is passed through by the outflow pipe 6 and the connecting screw 7. The four connecting screws 7 are grouped and set parallel to the outflow pipe 6 to ensure that the sealing cover 3 can seal the heat preservation shell 1 well, maintain the stability of the internal circulation environment, and reduce the leakage of cold air and the entry of external heat.
[0043] The low-temperature cold air generated by the semiconductor cooler 2 becomes the cold source basis for the entire freeze-drying process. One end of the distribution pipe 13 is connected to an air pump, which allows the gas to pass through the connecting pipe 12 and then flow into the outer ring space between the insulation shell 1 and the limiting inner frame 4 through the L-shaped opening inside the guide block 11. During the gas flow, it comes into contact with the cold source produced by the semiconductor cooler 2 to form cold air, which then flows along the outer ring space to the distribution block 10. The distribution block 10, installed on the outer wall of the limiting inner frame 4, uses its parallelogram cross-section and the gap with the inner wall of the insulation shell to guide the cold air into two streams. One stream flows in the outer ring space and is eventually introduced into the reagent rack 8 by the inclined surface of another distribution block 10. The other stream enters the reagent rack 8 along the inclined surface of the distribution block 10, so that the reagent rack 8 receives cold air from four directions. The cold air flows evenly through the industrial enzyme preparation in the reagent rack 8. Under the continuous action of the circulating cold air, the water in the enzyme preparation gradually sublimates and is carried away, achieving uniform freeze-drying.
[0044] The circular holes on the surface of the outlet pipe 6 allow the circulating cold air to flow out at appropriate locations. Since the outlet pipe 6 is connected to a circulating air pump, it draws out cold air containing sublimated water, which then participates in the freeze-drying process of the enzyme preparation. The damping ring at the connection between the outlet pipe 6 and the reagent rack 8 can prevent cold air leakage while ensuring the relative position of the outlet pipe 6 and the reagent rack 8 is stable, thus increasing the overall practicality.
[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A freeze-drying apparatus for industrial enzyme preparation testing with circulation guidance, comprising: The heat-insulating shell (1) is a rectangular box made of metal plates and heat-insulating layers welded together. Semiconductor coolers (2) are fixedly installed on both sides of the heat-insulating shell (1), and a sealing cap (3) is placed in the opening at the top of the heat-insulating shell (1). The semiconductor cooler (2) is the main refrigeration component of the industrial enzyme preparation test freeze-drying device. The heat-insulating shell (1) is characterized by: a limiting inner frame (4) is installed inside the heat-insulating shell (1), and the limiting inner frame (4) divides the internal space of the heat-insulating shell (1) into an outer ring and an inner cavity. A positioning frame (5) is snapped into the bottom of the heat-insulating shell (1), and the side wall of the positioning frame (5) abuts against the surface of the limiting filter (9). The limiting filter (9) is nested and installed against the inner wall of the limiting inner frame (4). An outlet pipe (6) is snapped into the top of the positioning frame (5), and four connecting screws are rotatably connected to the top of the positioning frame (5). 7) The connecting screw (7) passes through the reagent rack (8), and the reagent rack (8) is set above the positioning frame (5). The outer wall of the limiting inner frame (4) is engaged with two diversion blocks (10), and the outer wall of the limiting inner frame (4) abuts against the surface of the diversion block (11). The diversion block (11) and the diversion block (10) are respectively set on two adjacent surfaces of the limiting inner frame (4), and the diversion block (11) passes through the heat insulation shell (1) and is engaged with the side wall of the connecting pipe (12). The top end of the connecting pipe (12) is engaged with one end of the diversion pipe (13), and the diversion pipe (13) is a three-way pipe. The cold air generated by the semiconductor cooler (2) is guided by the limiting inner frame (4), the diversion block (11) and the diversion block (10) to form a circulation in the heat insulation shell (1) and uniformly freeze-dry the industrial enzyme preparation in the reagent rack (8).
2. The industrial enzyme preparation test freeze-drying device with circulation guidance according to claim 1, characterized in that: The sealing cap (3) is penetrated by the outlet pipe (6) and the connecting screw (7), and the four connecting screws (7) are divided into two groups, with each group of connecting screws (7) arranged parallel to the outlet pipe (6).
3. The industrial enzyme preparation test freeze-drying device with circulation guidance according to claim 1, characterized in that: The inner limiting frame (4) has an inclined opening on each side, and the inclination of the inclined opening of the inner limiting frame (4) is aligned with the inclination of the surfaces of the diversion block (10) and the drainage block (11).
4. The industrial enzyme preparation test freeze-drying device with circulation guidance according to claim 1, characterized in that: The upper end of the positioning frame (5) is fixedly equipped with four positioning rods (14), and the four positioning rods (14) pass through the reagent placement frame (8).
5. The industrial enzyme preparation test freeze-drying device with circulation guidance according to claim 1, characterized in that: The surface of the outflow tube (6) is provided with a round hole, and a damping ring is provided at the connection between the outflow tube (6) and the reagent rack (8).
6. The industrial enzyme preparation test freeze-drying device with circulation guidance according to claim 1, characterized in that: The diversion block (10) is set in the outer ring formed by the heat insulation shell (1) and the limiting inner frame (4), and the cross section of the diversion block (10) is a parallelogram, and there is a gap between the diversion block (10) and the inner wall of the heat insulation shell (1).
7. The industrial enzyme preparation test freeze-drying device with circulation guidance according to claim 1, characterized in that: The drainage block (11) has an L-shaped opening inside, and the surface of the drainage block (11) abuts against the heat insulation shell (1) and the limiting inner frame (4) respectively. The L-shaped opening of the drainage block (11) is connected to the connecting pipe (12) and the diversion pipe (13).