Low-temperature closed sampling equipment

Abstract

The utility model relates to the technical field of low-temperature sampling equipment, and discloses low-temperature closed sampling equipment which comprises a closed cabinet, a mounting rack and a ventilation rack, a closed door is tightly attached to the outer wall of the lower portion of the front end of the closed cabinet, and mounting grooves are formed in the front ends and the rear ends of the two sides of the inner wall of the lower portion of the closed cabinet. A threaded rod is arranged in the mounting groove in one side, a first servo motor is fixedly connected to the inner bottom face of the mounting groove in one side, and the output end of the first servo motor is fixedly connected with the middle of the lower end of the threaded rod. According to the utility model, through the combination of the first servo motor and the threaded rod and the design of the sliding block, the vertical position adjustment of the ventilation frame in the closed cabinet is realized, so that the flexible sampling operation is provided, the test tube disc is stably fixed through the design of the clamping plate, the test tube disc is prevented from moving or toppling in the sampling process, the safety of a sample is ensured, and meanwhile, the sampling efficiency is improved. The design of a threaded rod and an electric push rod enables the equipment to adapt to test tube plates with different sizes and types.

Description

Technical Field

[0001] This utility model relates to the field of low-temperature sampling equipment technology, and in particular to a low-temperature sealed sampling device. Background Technology

[0002] Sampling equipment is a specialized tool or system used to extract small samples from raw materials, products, or the environment for further analysis and testing. It ensures the representativeness and integrity of the samples taken, thereby providing reliable data support for quality control, scientific research, or regulatory compliance.

[0003] Existing sampling and analysis procedures typically involve operators performing manual or automated sterilization first, then manually extracting samples using sampling bottles and sending them to the laboratory for analysis. However, during manual sampling, the lack of a dedicated cryogenic maintenance system makes it difficult to maintain the sample at a low temperature, which may cause temperature-sensitive samples to deteriorate during the sampling process. In addition, manual sampling often has poor sealing performance, failing to effectively isolate the sample from the external environment and prevent contamination, which undoubtedly affects the purity of the sample and the accuracy of the test results.

[0004] Therefore, those skilled in the art have provided a low-temperature sealed sampling device to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a low-temperature sealed sampling device. Through the combination of a first servo motor and a threaded rod, along with a sliding block design, the vertical position of the venting frame inside the sealed cabinet can be adjusted, providing flexible sampling operations. The clamping plate design securely fixes the test tube tray, preventing movement or tipping during sampling and ensuring sample safety. Simultaneously, the threaded rod and electric push rod design allow the device to adapt to test tube trays of different sizes and types, expanding its applicability. Furthermore, the semiconductor cooling plate and heat dissipation fins, combined with multiple vents, ensure uniform airflow and sample cooling within the cabinet. The arrangement of the first, second, and third fan blades, along with the transmission system driven by the second servo motor, constitutes a highly efficient heat dissipation system, significantly improving cooling efficiency and ensuring the stability of the device during sampling and the preservation quality of the samples.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A low-temperature sealed sampling device includes a sealed cabinet, a mounting frame, and a venting frame. A sealed door is tightly fitted to the lower front outer wall of the sealed cabinet. Mounting grooves are provided at the front and rear ends of both sides of the lower inner wall of the sealed cabinet. A threaded rod is installed inside one mounting groove, and a first servo motor is fixedly connected to the inner bottom surface of the same mounting groove. The output end of each first servo motor is fixedly connected to the middle of the lower end of the threaded rod. A connecting rod is fixedly connected inside the other mounting groove. The outer walls of the connecting rod and the threaded rod... Each component is fitted with a sliding block. The outer wall of the mounting frame is tightly fitted to the inner wall of the lower part of the sealed cabinet. The outer walls of the sliding blocks on both sides are fixedly connected to the front and rear ends of the outer walls of the sealed cabinet. The outer wall of the ventilation frame is tightly fitted to the inner wall of the mounting frame. Electric push rods are fixedly connected to the front and rear ends of the inner walls of the ventilation frame. Clamping plates are slidably fitted to both sides of the inner bottom surface of the ventilation frame. A test tube tray is provided in the middle of the inner bottom surface of the ventilation frame. The outer walls of the test tube tray are tightly fitted to the outer walls of the adjacent sides of the clamping plates.

[0008] Through the above technical solutions, the design of the sealed cabinet can effectively maintain a low-temperature environment, ensuring that the sample remains at the required low temperature throughout the sampling process. In addition, the combination of the first servo motor and the threaded rod, along with the design of the sliding block, allows the ventilation rack to be adjusted up and down inside the sealed cabinet, thereby achieving flexible sampling operations. The clamping plate design can firmly fix the test tube tray, preventing the test tubes from moving or tipping over during sampling, ensuring the safety of the samples. Furthermore, the design of the threaded rod and the electric push rod allows the equipment to adapt to test tube trays of different sizes and types, increasing the applicability of the equipment.

[0009] Furthermore, a fixed cover is fixedly connected to the middle of the lower surface of the sealed cabinet. The interior of the fixed cover is connected to the interior of the lower end of the sealed cabinet. Multiple ventilation holes are provided on the lower surface of the fixed cover. A semiconductor cooling plate is fixedly connected to the inner wall of the upper end of the fixed cover. Multiple heat dissipation fins are fixedly connected to the lower surface of the semiconductor cooling plate. A first fan blade is provided on one side of the lower end of each heat dissipation fin, and a third fan blade is provided on the other side. A second fan blade is provided between the first and third fan blades. The first, third, and second fan blades are all located inside the fixed cover. A second servo motor is fixedly connected to the middle of one side of the bottom surface of the fixed cover. The upper end of the second servo motor is provided with a first toothed belt. Both sides of the inner wall of the first toothed belt are meshed with first transmission gears. The output end of the second servo motor on one side is fixedly connected to the middle of the lower end of the first transmission gear. The other side of the upper end of the first toothed belt is tightly fitted with a second toothed belt. Both sides of the inner wall of the second toothed belt are meshed with second transmission gears. The first transmission gear on the other side is fixedly connected to the second transmission gear on one side. The first transmission gear on one side is fixedly connected to the first fan blade. The upper ends of the first transmission gear on the other side and the second transmission gear on one side are both fixedly connected to the lower end of the second fan blade. The second transmission gear on the other side is fixedly connected to the lower end of the third fan blade.

[0010] The above technical solution provides efficient cooling capacity through the design of semiconductor cooling plate and heat dissipation fins, which can quickly reduce and maintain the temperature inside the sealed cabinet, ensuring stable preservation of samples in a low-temperature environment. Through multiple vents and heat dissipation fins, the fixed cover can achieve uniform air circulation inside the cabinet, avoiding local overheating or overcooling and ensuring uniform cooling of the samples. In addition, the setting of the first, second, and third fan blades, as well as the transmission system of the second servo motor, together constitute a powerful heat dissipation system, effectively transferring heat from the cooling plate and improving cooling efficiency.

[0011] Furthermore, the output ends of the electric push rods are all fixedly connected to the front and rear ends of the clamping plate on the side away from the center of the venting frame, and multiple sample containers are tightly fitted to the inner wall of the upper end of the test tube tray.

[0012] Through the above technical solution, the design of the electric push rod enables the clamping plate to move automatically as needed, thereby realizing the automatic clamping and release of the sample container. This automated design reduces manual operation, improves the accuracy and efficiency of sampling, and the design of the electric push rod enables the sampling equipment to adapt to sample containers of different sizes and types.

[0013] Furthermore, a mounting plate is fixedly connected to the middle of the inner wall of the sealed cabinet. Multiple sampling tubes are tightly fitted to the inner wall of the mounting plate. The lower ends of the sampling tubes penetrate the mounting plate to the lower end of the mounting plate and extend into the interior of the sample container. A fixing ring is fixedly connected to the outer wall of the upper end of the sampling tube. The lower ends of the fixing rings are tightly fitted to the upper surface of the mounting plate. A silicone airbag is connected through the upper end of the sampling tube.

[0014] Through the above technical solution, the sampling tube fits tightly against the mounting plate and extends into the sample container. This design effectively prevents the sample from coming into contact with the external environment during transfer, reducing the possibility of sample contamination. The sampling tube is directly connected to the inside of the sample container, ensuring the directness and accuracy of the sampling process and avoiding sampling errors caused by multiple transfers or external interference. The tight fit between the fixing ring and the mounting plate, as well as the through connection of the silicone airbag, provides stable support for the sampling tube, reducing vibration and displacement during the sampling process, thereby maintaining the stability of the sample. The use of the silicone airbag can form a sealed space during the sampling process, preventing the sample from coming into contact with air during sampling.

[0015] Furthermore, a cabinet door is hinged to the outer wall of one front side of the upper part of the sealed cabinet, a PLC control panel is fixedly connected to the outer wall of the middle front part of the cabinet door, and a door handle is fixedly connected to the outer wall of the middle front part of the other side of the cabinet door.

[0016] The above technical solution uses the door handle (302) and PLC control panel (301) to operate the cabinet door and control the equipment, respectively.

[0017] Furthermore, support legs are fixedly connected to the four corners of the lower surface of the sealed cabinet, a charging port is provided on the outer wall of the other side of the lower rear end of the sealed cabinet, and an observation window is fixedly connected to the middle of the sealed door.

[0018] The above technical solution uses support legs to stabilize the equipment, a charging port to charge the equipment, and an observation window to allow the operator to observe the situation inside the sealed cabinet.

[0019] Furthermore, the inner wall of the sliding block on one side is threadedly connected to the outer wall of the threaded rod, and the inner wall of the sliding block on the other side is slidably fitted to the outer wall of the connecting rod;

[0020] The above technical solution and design make the process of moving the sliding block, mounting frame, ventilation frame, test tube tray, and sample container more stable.

[0021] Furthermore, sliding plates are fixedly connected to both sides of the outer wall of the ventilation frame, and sliding grooves are provided on both sides of the inner wall of the mounting frame, with the outer walls of the sliding plates slidingly fitting against the inner walls of the sliding grooves.

[0022] The above technical solution allows the ventilation rack to be easily removed from the inner wall of the mounting frame, facilitating the placement of test tube trays and sample containers.

[0023] This utility model has the following beneficial effects:

[0024] 1. The low-temperature sealed sampling device proposed in this utility model can effectively maintain a low-temperature environment through the design of the sealed cabinet, ensuring that the sample maintains the required low temperature state throughout the sampling process. In addition, through the combination of the first servo motor and the threaded rod, as well as the design of the sliding block, the position of the venting frame can be adjusted up and down inside the sealed cabinet, thereby realizing flexible sampling operation. The design of the clamping plate can firmly fix the test tube tray, preventing the test tubes from moving or tipping over during the sampling process, ensuring the safety of the sample. Furthermore, the design of the threaded rod and the electric push rod allows the device to adapt to test tube trays of different sizes and types, increasing the applicability of the device.

[0025] 2. The low-temperature sealed sampling device proposed in this utility model provides efficient cooling capacity through the design of semiconductor cooling plate and heat dissipation fins. It can quickly reduce and maintain the temperature inside the sealed cabinet, ensuring stable preservation of samples in a low-temperature environment. Through multiple vents and heat dissipation fins, the fixed cover can achieve uniform air circulation inside the cabinet, avoiding local overheating or overcooling and ensuring uniform cooling of samples. In addition, the setting of the first, second, and third fan blades, as well as the transmission system of the second servo motor, together constitute a powerful heat dissipation system, effectively transferring heat from the cooling plate and improving cooling efficiency. Attached Figure Description

[0026] Figure 1 This is an isometric view of a low-temperature sealed sampling device proposed in this utility model;

[0027] Figure 2 This is an isometric schematic diagram of a low-temperature sealed sampling device proposed in this utility model;

[0028] Figure 3 This is a cross-sectional view of a low-temperature sealed sampling device proposed in this utility model;

[0029] Figure 4 This is a partial structural detail drawing of a low-temperature sealed sampling device proposed in this utility model;

[0030] Figure 5 This is a partial exploded view of the structure of a low-temperature sealed sampling device proposed in this utility model;

[0031] Figure 6 This is a partial structural cross-sectional view of a low-temperature sealed sampling device proposed in this utility model;

[0032] Figure 7 This is a partial structural detail of a low-temperature sealed sampling device proposed in this utility model.

[0033] Legend:

[0034] 1. Enclosed cabinet; 101. Support leg; 102. Charging port; 103. Mounting slot; 104. Mounting plate; 2. Enclosed door; 201. Observation window; 3. Cabinet door; 301. PLC control panel; 302. Door handle; 4. Fixing cover; 401. Vent hole; 402. Semiconductor cooling plate; 403. Heat sink; 5. Mounting bracket; 501. Sliding groove; 6. First servo motor; 601. Threaded rod; 602. Connecting rod; 603. Sliding... 7. Moving block; 8. Ventilation frame; 9. Sliding plate; 10. Electric push rod; 11. Clamping plate; 12. Test tube tray; 13. Sample container; 14. Sampling tube; 15. Silicone airbag; 16. Fixing ring; 17. Second servo motor; 18. First fan blade; 19. Second fan blade; 10. Third fan blade; 10. First transmission gear; 10. First toothed belt; 10. Second toothed belt; 10. Second transmission gear. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Reference Figure 1 , Figure 3 and Figure 4This utility model provides a specific embodiment: a low-temperature sealed sampling device, including a sealed cabinet 1, a mounting frame 5, and a venting frame 7. A sealed door 2 is tightly fitted to the lower outer wall of the front end of the sealed cabinet 1. Mounting grooves 103 are provided on both the front and rear ends of the lower inner wall of the sealed cabinet 1. A threaded rod 601 is installed inside one mounting groove 103. A first servo motor 6 is fixedly connected to the inner bottom surface of one mounting groove 103. The output end of the first servo motor 6 is fixedly connected to the middle of the lower end of the threaded rod 601. A connecting rod 602 is fixedly connected inside the other mounting groove 103. Sliding blocks 603 are fitted onto the outer walls of both the connecting rod 602 and the threaded rod 601. The outer wall of the mounting frame 5 is tightly fitted to the lower inner wall of the sealed cabinet 1. The outer walls of the adjacent sides of the sliding blocks 603 are fixedly connected to the front and rear ends of the outer walls of the sealed cabinet 1. The outer wall of the venting frame 7 is tightly fitted to the inner wall of the mounting frame 5. Electric push rods 702 are fixedly connected to the front and rear ends of both sides of the wall. Clamping plates 703 are slidably attached to both sides of the inner bottom surface of the ventilation frame 7. A test tube tray 8 is set in the middle of the inner bottom surface of the ventilation frame 7. The outer walls of the test tube tray 8 are tightly attached to the outer walls of the adjacent sides of the clamping plates 703. The design of the sealed cabinet 1 can effectively maintain a low temperature environment and ensure that the sample maintains the required low temperature state throughout the sampling process. In addition, through the combination of the first servo motor 6 and the threaded rod 601, and the design of the sliding block 603, the ventilation frame 7 can be adjusted up and down inside the sealed cabinet 1, thereby realizing flexible sampling operation. The design of the clamping plate 703 can firmly fix the test tube tray 8, prevent the test tube from moving or tipping over during the sampling process, and ensure the safety of the sample. Furthermore, the design of the threaded rod 601 and the electric push rod 702 allows the equipment to adapt to test tube trays 8 of different sizes and types, increasing the applicability of the equipment.

[0037] Reference Figure 3 , Figure 6 and Figure 7A fixed cover 4 is fixedly connected to the middle of the lower surface of the sealed cabinet 1. The interior of the fixed cover 4 is connected to the interior of the lower end of the sealed cabinet 1. Multiple ventilation holes 401 are opened on the lower surface of the fixed cover 4. A semiconductor cooling plate 402 is fixedly connected to the inner wall of the upper end of the fixed cover 4. Multiple heat dissipation fins 403 are fixedly connected to the lower surface of the semiconductor cooling plate 402. A first fan blade 1001 is provided on one side of the lower end of the heat dissipation fin 403, and a third fan blade 1003 is provided on the other side of the lower end of the heat dissipation fin 403. A middle section of the first fan blade 1001 and the third fan blade 1003 is provided with... The device has a second fan blade 1002. The first fan blade 1001, the third fan blade 1003, and the second fan blade 1002 are all located inside the fixed cover 4. A second servo motor 10 is fixedly connected to the middle of one side of the bottom surface of the fixed cover 4. A first toothed belt 1005 is provided at the upper end of the second servo motor 10. Both sides of the inner wall of the first toothed belt 1005 are geared and meshed with a first transmission gear 1004. The output end of one side of the second servo motor 10 is fixedly connected to the middle of the lower end of the first transmission gear 1004. A second toothed belt 1006 is tightly fitted to the other side of the upper end of the first toothed belt 1005. The inner wall of the second toothed belt 1006 has two sides with meshing second transmission gears 1007. On the other side, a first transmission gear 1004 is fixedly connected to the second transmission gear 1007 on one side. The first transmission gear 1004 on one side is fixedly connected to the first fan blade 1001. The upper ends of the first transmission gear 1004 and the second transmission gear 1007 on one side are fixedly connected to the lower end of the second fan blade 1002. The second transmission gear 1007 on the other side is fixedly connected to the lower end of the third fan blade 1003. The design of the semiconductor cooling plate 402 and the heat sink 403 improves… It provides efficient cooling capacity, which can quickly reduce and maintain the temperature inside the sealed cabinet 1, ensuring that the sample is stably preserved in a low-temperature environment. Through multiple vents 401 and heat dissipation fins 403, the fixed cover 4 can achieve uniform air circulation inside the cabinet, avoiding local overheating or overcooling and ensuring uniform cooling of the sample. In addition, the arrangement of the first fan blade 1001, the second fan blade 1002 and the third fan blade 1003, as well as the transmission system of the second servo motor 10, together constitute a powerful heat dissipation system, which effectively transfers heat from the cooling plate and improves cooling efficiency.

[0038] Reference Figure 1 , Figure 2 and Figure 5The output ends of the electric push rods 702 are fixedly connected to the front and rear ends of the clamping plate 703 on the side away from the center of the vent frame 7. Multiple sample containers 801 are tightly fitted to the inner wall of the upper end of the test tube tray 8. The design of the electric push rods 702 allows the clamping plate 703 to move automatically as needed, thereby achieving automatic clamping and release of the sample containers 801. This automated design reduces manual operation and improves the accuracy and efficiency of sampling. Furthermore, the design of the electric push rods 702 allows the sampling equipment to adapt to sample containers 801 of different sizes and types. A mounting plate 104 is fixedly connected to the middle of the inner wall of the sealed cabinet 1. Multiple sampling tubes 9 are tightly fitted to the inner wall of the mounting plate 104, and the lower ends of the sampling tubes 9 penetrate the mounting plate 104 to… The lower end of the mounting plate 104 extends into the sample container 801. A fixing ring 902 is fixedly connected to the outer wall of the upper end of each sampling tube 9. The lower end of each fixing ring 902 is tightly fitted to the upper surface of the mounting plate 104. A silicone air bladder 901 is connected through the upper end of each sampling tube 9. The sampling tube 9 fits tightly against the mounting plate 104 and extends into the sample container. This design effectively prevents the sample from contacting the external environment during transfer, reducing the possibility of sample contamination. The sampling tube 9 is directly connected to the inside of the sample container, ensuring the directness and accuracy of the sampling process and avoiding sampling errors caused by multiple transfers or external interference. The tight fit between the fixing ring 902 and the mounting plate 104, and the through connection of the silicone air bladder 901, contribute to this design. The sampling tube 9 is provided with stable support, reducing vibration and displacement during the sampling process, thereby maintaining the stability of the sample. The use of silicone airbag 901 can form a sealed space during the sampling process, preventing the sample from contacting the air during sampling. The outer wall of the upper side of the sealed cabinet 1 is hinged to the cabinet door 3. The outer wall of the middle front of the cabinet door 3 is fixedly connected to the PLC control panel 301. The outer wall of the middle front of the cabinet door 3 is fixedly connected to the door handle 302. The door handle (302) and the PLC control panel (301) are used to operate the cabinet door 3 and control the equipment, respectively. The four corners of the lower surface of the sealed cabinet 1 are fixedly connected to the support legs 101. The outer wall of the lower rear of the sealed cabinet 1 is provided with a charging port 102. The middle of the sealed door 2 The unit is fixedly connected to an observation window 201, which is used to stabilize the equipment via support legs 101 and to charge the equipment via a charging port 102. The observation window 201 also allows the operator to observe the interior of the sealed cabinet 1. The inner wall of one sliding block 603 is threadedly connected to the outer wall of the threaded rod 601, while the inner wall of the other sliding block 603 slides against the outer wall of the connecting rod 602. This design makes the movement of the sliding block 603, which drives the mounting frame 5, and consequently the ventilation frame 7, as well as the test tube tray 8 and sample container 801, more stable. Sliding plates 701 are fixedly connected to both sides of the outer wall of the ventilation frame 7. Sliding grooves 501 are provided on both sides of the inner wall of the mounting frame 5, and the outer walls of the sliding plates 701 slide against the inner walls of the sliding grooves 501.This design allows the ventilation rack 7 to be easily removed from the inner wall of the mounting frame 5, facilitating the placement of the test tube tray 8 and sample container 801.

[0039] Working principle: First, open the sealed door 2 of the sealed cabinet 1 and place the sample container 801 to be sampled on the test tube tray 8. Then, use the electric push rod 702 to adjust the position of the clamping plate 703 to ensure that the test tube tray 8 and the sample container 801 are firmly fixed. Next, set the sampling parameters, including temperature and sampling position, through the PLC control panel 301, and start the first servo motor 6. Through the cooperation of the threaded rod 601 and the sliding block 603, the position of the venting frame 7 in the sealed cabinet 1 is precisely adjusted to ensure that the sampling tube 9 is accurately aligned with the sample container 801. At the same time, the semiconductor cooling plate 402 and the heat dissipation system, with the help of the fan blades driven by the second servo motor 10, effectively reduce and maintain the temperature inside the cabinet, ensuring the stable preservation of the sample in a low-temperature environment. During the sampling process, the operator opens the cabinet door 3 at the top of the sealed cabinet 1 and forms a sealed space by squeezing the silicone air bag 901 at the top of the sampling tube 9 to prevent the sample from contacting the air and reduce the risk of contamination. Then, the operator starts the sampling process via the PLC control panel 301. The lower end of the sampling tube 9 is directly connected to the inside of the sample container 801 for precise sampling. During this process, the tight fit between the fixing ring 902 and the mounting plate 104 ensures the stability of the sampling tube 9. After sampling is completed, the operator releases the silicone air bladder 901 at the upper end of the sampling tube 9, disconnects it from the sample container 801, and lifts the sampling tube 9 upwards. Finally, the operator removes the sample from the sampling tube 9 for subsequent analysis or preservation. The entire process is smooth and efficient, ensuring the accuracy of sampling and the safety of the sample.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-temperature sealed sampling device, comprising a sealed cabinet (1), a mounting frame (5), and a ventilated frame (7), characterized in that: The sealed cabinet (1) has a sealed door (2) tightly fitted to the lower outer wall of the front end. Mounting grooves (103) are provided on both the front and rear ends of the lower inner wall of the sealed cabinet (1). A threaded rod (601) is installed inside one mounting groove (103). A first servo motor (6) is fixedly connected to the inner bottom surface of one mounting groove (103). The output end of the first servo motor (6) is fixedly connected to the middle of the lower end of the threaded rod (601). A connecting rod (602) is fixedly connected inside the other mounting groove (103). Sliding blocks (602) are fitted onto the outer walls of both the connecting rod (602) and the threaded rod (601). 3) The outer wall of the mounting frame (5) is closely fitted to the inner wall of the lower part of the sealed cabinet (1). The outer walls of the adjacent sides of the sliding block (603) are fixedly connected to the front and rear ends of the outer walls of the sealed cabinet (1). The outer wall of the ventilation frame (7) is closely fitted to the inner wall of the mounting frame (5). The front and rear ends of the inner walls of the ventilation frame (7) are fixedly connected to electric push rods (702). The two sides of the inner bottom surface of the ventilation frame (7) are slidably fitted with clamping plates (703). The middle part of the inner bottom surface of the ventilation frame (7) is provided with a test tube tray (8). The two sides of the outer wall of the test tube tray (8) are closely fitted to the outer walls of the adjacent sides of the clamping plates (703).

2. The low-temperature sealed sampling device according to claim 1, characterized in that: A fixed cover (4) is fixedly connected to the middle of the lower surface of the sealed cabinet (1). The interior of the fixed cover (4) is connected to the interior of the lower end of the sealed cabinet (1). Multiple ventilation holes (401) are provided on the lower surface of the fixed cover (4). A semiconductor cooling plate (402) is fixedly connected to the inner wall of the upper end of the fixed cover (4). Multiple heat dissipation fins (403) are fixedly connected to the lower surface of the semiconductor cooling plate (402). A heat dissipation fin (403) is provided on one side of the lower end of the heat dissipation fin (403). A first fan blade (1001) is provided on the other side of the lower end of the heat dissipation fin (403), and a third fan blade (1003) is provided on the other side of the lower end of the first fan blade (1001) and the third fan blade (1003). A second fan blade (1002) is provided in the middle of the first fan blade (1001) and the third fan blade (1003). The first fan blade (1001), the third fan blade (1003) and the second fan blade (1002) are all located inside the fixed cover (4). A second servo motor (10) is fixedly connected to the middle of one side of the bottom surface of the fixed cover (4). A first toothed belt (1005) is provided at the upper end of the servo motor (10). A first transmission gear (1004) meshes with the inner walls of the first toothed belt (1005) on both sides. The output end of the second servo motor (10) on one side is fixedly connected to the middle of the lower end of the first transmission gear (1004). A second toothed belt (1006) is tightly fitted to the other side of the upper end of the first toothed belt (1005). A second transmission gear (1004) meshes with the inner walls of the second toothed belt (1006) on both sides. 007), the first transmission gear (1004) on the other side is fixedly connected to the second transmission gear (1007) on one side, the first transmission gear (1004) on one side is fixedly connected to the first fan blade (1001), the upper ends of the first transmission gear (1004) on the other side and the second transmission gear (1007) on one side are both fixedly connected to the lower end of the second fan blade (1002), and the second transmission gear (1007) on the other side is fixedly connected to the lower end of the third fan blade (1003).

3. The low-temperature sealed sampling device according to claim 1, characterized in that: The output ends of the electric push rods (702) are fixedly connected to the front and rear ends of the clamping plate (703) on the side away from the center of the ventilation frame (7), and multiple sample containers (801) are tightly attached to the inner wall of the upper end of the test tube tray (8).

4. The low-temperature sealed sampling device according to claim 3, characterized in that: A mounting plate (104) is fixedly connected to the middle of the inner wall of the sealed cabinet (1). Multiple sampling tubes (9) are tightly attached to the inner wall of the mounting plate (104). The lower end of each sampling tube (9) passes through the mounting plate (104) to the lower end of the mounting plate (104) and extends into the sample container (801). A fixing ring (902) is fixedly connected to the outer wall of the upper end of each sampling tube (9). The lower end of each fixing ring (902) is tightly attached to the upper surface of the mounting plate (104). A silicone airbag (901) is connected through the upper end of each sampling tube (9).

5. The low-temperature sealed sampling device according to claim 1, characterized in that: The cabinet (1) is hinged to a cabinet door (3) on the outer wall of one side of the upper part. A PLC control panel (301) is fixedly connected to the outer wall of the middle front part of the cabinet door (3). A door handle (302) is fixedly connected to the outer wall of the middle front part of the other side of the cabinet door (3).

6. The low-temperature sealed sampling device according to claim 1, characterized in that: Support legs (101) are fixedly connected to the four corners of the lower surface of the sealed cabinet (1). A charging port (102) is opened on the outer wall of the other side of the lower rear end of the sealed cabinet (1). An observation window (201) is fixedly connected to the middle of the sealed door (2).

7. The low-temperature sealed sampling device according to claim 1, characterized in that: The inner wall of the sliding block (603) on one side is threadedly connected to the outer wall of the threaded rod (601), and the inner wall of the sliding block (603) on the other side is slidably attached to the outer wall of the connecting rod (602).

8. The low-temperature sealed sampling device according to claim 1, characterized in that: The outer walls of the ventilation frame (7) are fixedly connected to sliding plates (701) on both sides, and the inner walls of the mounting frame (5) are provided with sliding grooves (501) on both sides. The outer walls of the sliding plates (701) slide against the inner walls of the sliding grooves (501).

Images