Multi-caliber test tube drying device

Abstract

The utility model belongs to experimental equipment technical field especially, more especially relates to a multi -aperture test tube drying device, the size fixed unity of the clamping slot of the existing device is used for holding test tube, can only match single aperture test tube, in order to adapt to different aperture test tube, laboratory needs to purchase multiple groups of different specifications drying device, and then increases equipment purchase cost problem, the present scheme is proposed, a multi -aperture test tube drying device, including drying box body and the sealing door of rotation connection in the one side of drying box body, the utility model has the advantages of: through the design of the test tube insertion slot aperture consistency on the same test tube clamping plate, the aperture difference of test tube insertion slot on different test tube clamping plate, can make the device compatible multiple test tube specifications, need not be equipped with drying equipment alone for different aperture test tube, reduce laboratory equipment purchase and management cost, improve equipment versatility, at the same time, the test tube insertion slot of inclination uses gravity to discharge accumulated water, is used for accelerating moisture evaporation.

Description

Technical Field

[0001] This utility model relates to a drying device, specifically a multi-diameter test tube drying device, belonging to the field of experimental equipment technology. Background Technology

[0002] In agricultural production, landscaping, and land remediation, tilling and loosening the soil is a crucial basic operation. Its core purpose is to break up the soil compaction layer, increase soil aeration and permeability, improve soil aggregate structure, and create a good soil environment for seed germination, crop root growth, and microbial activity. At the same time, it can also turn weeds, dead branches and fallen leaves into the soil, realize straw return to the field and weed control, and improve soil fertility.

[0003] In the prior art, such as the test tube drying device for food testing disclosed in announcement number CN222123739U, this type of drying device has a hot air circulation drying method with dust filtration, which has the advantages of ensuring rapid drying, avoiding dust contamination of test tubes, and improving reliability. However, the above-mentioned prior art solutions have the following shortcomings: When the above-mentioned drying device is used, the size of the slot for holding test tubes is fixed and uniform in the inner side of the test tube rack fixed in the drying box body, which can only match test tubes of a single diameter. In order to adapt to test tubes of different diameters, the laboratory needs to purchase multiple sets of drying devices of different specifications, thereby increasing the equipment procurement cost. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-diameter test tube drying device to solve the problem that the slots used in the above-mentioned devices for holding test tubes are of fixed and uniform size, and can only match test tubes of a single diameter. In order to adapt to test tubes of different diameters, laboratories need to purchase multiple sets of drying devices of different specifications, thereby increasing equipment procurement costs.

[0005] The present invention achieves the above objectives through the following technical solution: a multi-diameter test tube drying device, comprising a drying chamber body and a sealing door rotatably connected to one side of the drying chamber body; The drying oven body has a mounting plate fixed inside. The surface of the mounting plate is rotatably connected to a mounting shaft. Multiple sets of U-shaped brackets are evenly distributed in a ring on the outer surface of the mounting shaft. Test tube holders are set inside the multiple sets of U-shaped brackets for placing test tubes. The surface of the test tube holders is provided with test tube slots. The holes of the multiple sets of test tube slots on the same test tube holder are the same size. The holes of the test tube slots on each test tube holder are different sizes to accommodate test tubes of different specifications. The top of the drying oven body is equipped with a top air inlet pipe, and the bottom of the drying oven body is equipped with a bottom air return pipe to form a vertical circulation path of top air inlet and bottom air return.

[0006] As a further improvement of this utility model, the test tube slot is inclinedly opened on the surface of the test tube holder to fix the test tube and allow the water inside to flow out naturally.

[0007] As a further improvement of this utility model: a card strip is fixedly installed on the surface of the test tube card plate, and a card groove adapted to the card strip is opened in the U-shaped card seat. The test tube card plate is engaged in the U-shaped card seat through the card strip and the card groove.

[0008] As a further embodiment of this utility model: a fixing sleeve is fixedly installed on one end of the surface of the test tube card plate, and a spring is installed inside the fixing sleeve. One end of the spring abuts against one end of the ball head block that is slidably connected inside the fixing sleeve. A ball head slot adapted to the ball head block is opened in the U-shaped card seat.

[0009] As a further embodiment of this utility model: a helical gear one is fixed at one end of the mounting shaft that passes through the mounting plate, a limit frame is fixedly installed on the bottom surface of the mounting plate, a transmission rod is rotatably connected inside the limit frame, a helical gear two is fixed at one end of the transmission rod, the helical gear two meshes with the helical gear one, a servo motor is fixedly installed on one side surface of the drying oven body, the output end of the servo motor extends into the drying oven body and is connected to the other end of the transmission rod.

[0010] As a further improvement of this utility model: a flow-deflecting sleeve is fixedly installed at the end of the mounting shaft, and the surface of the flow-deflecting sleeve is provided with multiple grooves for flow around.

[0011] As a further improvement of this utility model: the bottom surface of the test tube holder is provided with an inverted conical water channel, which is connected to the test tube slot. Two waste boxes are symmetrically installed on the surface of the mounting plate. The two waste boxes form a disc shape to receive the waste liquid flowing out of the water channel. The bottom surface of the waste box is fixed with a locking protrusion. The surface of the mounting plate is provided with an annular locking groove that matches the locking protrusion. Both waste boxes are locked to the surface of the mounting plate through the locking protrusion and the annular locking groove.

[0012] As a further improvement of this utility model: a germicidal lamp for sterilizing test tubes is installed inside the drying oven, and a viewing window is installed on the surface of the sealed door.

[0013] The beneficial effects of this utility model are: This invention, through the design of having the same test tube slot diameter on the same test tube card plate and different test tube slot diameters on different test tube card plates, enables the device to be compatible with multiple test tube specifications, eliminating the need to equip test tubes of different diameters with separate drying equipment, reducing laboratory equipment procurement and management costs, and improving equipment versatility. The mounting shaft drives the U-shaped bracket and test tube holder to rotate, allowing the test tubes to dynamically adjust their positions. This, combined with the vertical circulating airflow created by the top air inlet pipe and the bottom air return pipe, as well as the turbulence effect generated by the turbulence sleeve, ensures that the hot air fully coats the surface of the test tubes. At the same time, the tilted test tube slots use gravity to drain accumulated water, preventing moisture residue from affecting drying, accelerating moisture evaporation, and ensuring drying quality and efficiency. The test tube tray adopts a dual quick-release structure, allowing experimenters to quickly change the appropriate tray to flexibly meet different experimental needs. The waste box is quickly disassembled and assembled via a convex locking mechanism and annular groove, facilitating timely cleaning of waste liquid and preventing contamination accumulation. In addition, the configuration of a viewing window and a germicidal lamp allows operators to monitor the drying status without frequently opening the door. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 In this utility model Figure 1 A schematic diagram of the rear view structure; Figure 3 This is a schematic diagram of the structure of the mounting plate, mounting shaft, and waste box in this utility model; Figure 4 This is a schematic diagram of the structure of the flow-around sleeve, transmission rod, and limiting frame in this utility model; Figure 5 This is a schematic diagram of the structure of the U-shaped card holder, test tube card plate, and water inlet trough in this utility model; Figure 6 This is a schematic diagram of the waste box and the annular slot in this utility model; Figure 7 This is a partial cross-sectional structural schematic diagram of the test tube clamping plate in this utility model; Figure 8 In this utility model Figure 5 An enlarged schematic diagram of the structure at point A in the diagram.

[0015] In the diagram: 1. Drying oven body; 2. Top air inlet duct; 3. Bottom return air duct; 4. Sealing door; 5. Mounting plate; 6. Mounting shaft; 7. U-shaped bracket; 8. Test tube holder; 9. Test tube slot; 10. Water inlet trough; 11. Locking strip; 12. Locking groove; 13. Fixing sleeve; 14. Spring 1; 15. Ball head locking block; 16. Ball head locking groove; 17. Baffle sleeve; 18. Helical gear 1; 19. Helical gear 2; 20. Transmission rod; 21. Servo motor; 22. Limiting frame; 23. Annular locking groove; 24. Waste box; 25. Locking protrusion; 26. Sterilization lamp. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0017] Example 1 like Figures 1 to 8 As shown, a multi-diameter test tube drying device includes a drying chamber body 1 and a sealing door 4 rotatably connected to one side of the drying chamber body 1. A mounting plate 5 is fixed inside the drying oven body 1. A mounting shaft 6 is rotatably connected to the surface of the mounting plate 5. Multiple sets of U-shaped brackets 7 are evenly distributed in a ring on the outer surface of the mounting shaft 6. Test tube holders 8 for placing test tubes are provided in the multiple sets of U-shaped brackets 7. Test tube slots 9 are provided on the surface of the test tube holders 8. The hole diameter of the multiple sets of test tube slots 9 provided on the same test tube holder 8 is the same. The hole diameter of the test tube slots 9 provided on each test tube holder 8 is different to accommodate test tubes of different specifications. The top of the drying oven body 1 is equipped with a top air inlet pipe 2, and the bottom of the drying oven body 1 is equipped with a bottom air return pipe 3, which is used to form a vertical circulation path of top air inlet and bottom air return.

[0018] By employing a design where the test tube slots 9 on the same test tube holder plate 8 have the same aperture while the apertures on different test tube holder plates 8 differ, the device can accommodate various test tube specifications. This eliminates the need for separate drying equipment for test tubes of different diameters, reducing laboratory equipment procurement and management costs and improving equipment versatility. The mounting shaft 6 is equipped with U-shaped brackets 7 arranged in a ring. Combined with the rotatable nature of the mounting shaft 6, the test tubes are arranged in a ring within the drying chamber body 1 and their positions can be dynamically adjusted. This ensures that each test tube is evenly exposed to the drying airflow, avoiding uneven drying caused by fixed positions and guaranteeing consistent drying quality. The vertical circulation path of the top air inlet duct 2 and the bottom return air duct 3, which forms a three-dimensional airflow throughout the drying chamber body 1, can more efficiently remove moisture from the test tube surface compared to horizontal airflow circulation, accelerating the drying process.

[0019] Furthermore, the test tube slot 9 is inclinedly opened on the surface of the test tube holder 8 to fix the test tube and allow the water inside to flow out naturally.

[0020] The inclined design of the test tube slot 9 utilizes gravity to allow residual cleaning water and condensate inside the test tube to flow naturally to the open end of the test tube. This avoids the problem of microbial growth caused by water accumulating inside the test tube for a long time, as well as water stains remaining on the inner wall of the test tube after drying, thus ensuring the cleanliness of the test tube.

[0021] Furthermore, a card strip 11 is fixedly installed on the surface of the test tube holder 8, and a card slot 12 adapted to the card strip 11 is opened in the U-shaped card holder 7. The test tube holder 8 is engaged in the U-shaped card holder 7 through the card strip 11 and the card slot 12.

[0022] The test tube holder 8 is inserted into the slot 12 of the U-shaped holder 7 via the holder strip 11. The experimenter can flexibly replace the test tube holder 8 with the corresponding required aperture according to the diameter of the test tube to be dried. The operation is simple and efficient.

[0023] Furthermore, a fixing sleeve 13 is fixedly installed on one end of the surface of the test tube holder 8. A spring 14 is installed inside the fixing sleeve 13. One end of the spring 14 abuts against one end of the ball head block 15 which is slidably connected inside the fixing sleeve 13. A ball head slot 16 adapted to the ball head block 15 is opened in the U-shaped holder 7.

[0024] When the test tube holder 8 is inserted into the slot 12 of the U-shaped holder 7 via the card strip 11 to the end, the spring 14 pushes the ball head card block 15 into the ball head slot 16, providing secondary limiting for the test tube holder 8. Based on the initial fixation of the card strip 11 and the slot 12, the movement of the test tube holder 8 is further restricted.

[0025] Example 2 Improvements based on Example 1: Furthermore, a helical gear 18 is fixed to one end of the mounting shaft 6 that passes through the mounting plate 5. A limit frame 22 is fixedly installed on the bottom surface of the mounting plate 5. A transmission rod 20 is rotatably connected inside the limit frame 22. A helical gear 19 is fixed to one end of the transmission rod 20. The helical gear 19 meshes with the helical gear 18. A servo motor 21 is fixedly installed on one side surface of the drying chamber body 1. The output end of the servo motor 21 extends into the drying chamber body 1 and is connected to the other end of the transmission rod 20.

[0026] Servo motor 21 drives transmission rod 20, which meshes with helical gear 18 through helical gear 2 19, and transmits power stably to mounting shaft 6, enabling controllable rotation of mounting shaft 6. This causes U-shaped bracket 7 and test tube bracket 8 to rotate synchronously, allowing the test tube to periodically change position within the drying oven body 1, ensuring that all parts of the test tube are evenly exposed to hot air.

[0027] Furthermore, a flow-deflecting sleeve 17 is fixedly installed at the end of the mounting shaft 6, and the surface of the flow-deflecting sleeve 17 is provided with multiple grooves for flow retraction.

[0028] The flow grooves on the surface of the turbulence sleeve 17 can break the single flow direction of the airflow inside the drying oven body 1. When the mounting shaft 6 rotates, the turbulence sleeve 17 rotates synchronously with it, causing the hot air to generate turbulence and eddies, allowing the airflow to penetrate more fully into the gap between the test tubes and contact the surface of the test tubes, improving the uniformity and efficiency of heat exchange and shortening the drying time.

[0029] Furthermore, the bottom surface of the test tube holder 8 is provided with an inverted conical water channel 10, which is connected to the test tube slot 9. Two waste boxes 24 are symmetrically installed on the surface of the mounting plate 5. The two waste boxes 24 form a disc shape to receive the waste liquid flowing out of the water channel 10. The bottom surface of the waste box 24 is fixed with a locking protrusion 25. The surface of the mounting plate 5 is provided with an annular locking groove 23 that matches the locking protrusion 25. Both waste boxes 24 are locked to the surface of the mounting plate 5 through the locking protrusion 25 and the annular locking groove 23.

[0030] The inverted conical water inlet 10 utilizes the guiding effect of the conical surface to accelerate the flow of water accumulated in the test tube slot 9 to the inlet, preventing water from remaining on the bottom surface of the test tube holder 8. The design of the water inlet 10 being connected to the test tube slot 9 ensures that all water in the test tube can be discharged through the water inlet 10, enhancing the drying effect of the test tube. The two waste boxes 24 are arranged in a disc shape, completely covering the area below the water inlet 10, achieving precise collection of waste liquid. The engagement of the locking protrusion 25 and the annular locking groove 23 makes the waste box 24 easy to disassemble and assemble, allowing experimental personnel to quickly remove and clean the waste liquid, ensuring the cleanliness of the device and the stability of the drying environment.

[0031] Furthermore, the drying oven body 1 is equipped with a germicidal lamp 26 for sterilizing test tubes, and the surface of the sealed door 4 is equipped with a viewing window.

[0032] The germicidal lamp 26 can be turned on before, during, or after drying to disinfect the surface of the test tubes and the interior space of the drying oven 1 with ultraviolet light, killing residual bacteria, mold and other microorganisms. The viewing window on the surface of the sealed door 4 allows the experimenter to directly observe the drying status of the test tubes (such as the drainage of accumulated water, the degree of dryness of the test tube surface, etc.) without opening the sealed door 4, reducing the risk of heat loss and external contamination caused by frequent door opening, while improving the convenience of operation.

[0033] Working principle: The test tube holder 8 is a key component for adapting to test tubes of various diameters. Its surface is machined with test tube slots 9 of different diameters as required. The slots on the same holder have the same diameter, while the slots on different holders have different diameters, thus covering the adaptation scenarios of test tubes of various specifications. During installation, the test tube holder 8 uses the locking strip 11 on its surface to engage with the locking groove 12 inside the U-shaped holder 7 to achieve initial positioning. At the same time, the spring 14 inside the fixing sleeve 13 pushes the ball head locking block 15 to engage with the ball head locking groove 16 inside the U-shaped holder 7, forming a secondary limit and ensuring that the test tube holder 8 is stably installed inside the U-shaped holder 7, providing reliable support for the placement of test tubes. Insert the test tube into the test tube slot 9 of the test tube holder 8. Because the slot is opened at an angle, the test tube will be in an inclined state after insertion. This inclined design uses gravity to allow the water inside the test tube to flow naturally into the water inlet trough 10 along the tube wall, avoiding water residue from affecting the drying effect. At the same time, the inclined posture also increases the contact area between the test tube and the drying airflow, helping to improve the drying efficiency. Hot air is introduced through the top air inlet duct 2 and returned through the bottom air return duct 3, forming a vertical circulation path of top air intake, internal circulation and bottom air return. The surface of the turbulence sleeve 17 at the end of the mounting shaft 6 is provided with a flow groove. When the airflow passes through, it generates turbulence, breaks the single airflow direction, and makes the hot air cover the surface of the test tube more evenly, improves the heat transfer efficiency and accelerates the evaporation of moisture in the test tube. When the test tube is placed at an angle, the water inside is guided by the water inlet trough 10 and flows into the disc area on the surface of the mounting plate 5, which is surrounded by two waste boxes 24. The waste boxes 24 are engaged with the annular groove 23 of the mounting plate 5 by the protrusion 25, which facilitates disassembly and cleaning, avoids the accumulation of waste liquid in the drying oven body 1 and causes pollution, ensures the cleanliness of the device, and indirectly improves the stability of the drying environment. When the servo motor 21 starts, its output drives the transmission rod 20 to rotate. The transmission rod 20 drives the mounting shaft 6 to rotate on the surface of the mounting plate 5 through the meshing of the helical gear 2 19 and the helical gear 1 18. When the mounting shaft 6 rotates, it drives the U-shaped bracket 7 and the test tube bracket 8 to rotate synchronously, so that the test tubes change position periodically in the drying oven body 1, allowing all parts of the test tubes to be evenly exposed to hot air, solving the problem of uneven heating in traditional static drying and ensuring consistent drying. The limiting frame 22 plays a role in limiting and supporting the rotation of the transmission rod 20, ensuring stable transmission of the transmission rod 20, avoiding gear meshing failure due to the shaking of the transmission rod 20, ensuring the continuity and stability of the rotation of the mounting shaft 6, and providing reliable power support for the dynamic drying of test tubes; The germicidal lamp 26 installed inside the drying oven body 1 can disinfect the test tubes and internal space before, during, or after drying, kill residual microorganisms, ensure the cleanliness of the test tubes, and is suitable for biological experiments and other scenarios with high requirements for sterile environment. The visible window on the surface of the sealed door 4 allows operators to observe the internal drying status without opening the sealed door 4, thereby reducing heat loss and the risk of external contamination. This enables the various functions of the device to work together to achieve efficient and stable drying of multi-diameter test tubes.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-diameter test tube drying device, comprising a drying chamber body (1) and a sealing door (4) rotatably connected to one side of the drying chamber body (1); characterized in that: The drying oven body (1) is fixed with an installation plate (5). The surface of the installation plate (5) is rotatably connected with an installation shaft (6). The outer surface of the installation shaft (6) is evenly equipped with multiple sets of U-shaped brackets (7). Each set of U-shaped brackets (7) is provided with a test tube holder (8) for placing test tubes. The surface of the test tube holder (8) is provided with a test tube slot (9). The hole diameter of the multiple sets of test tube slots (9) provided on the same test tube holder (8) is the same. The hole diameter of the test tube slots (9) provided on each test tube holder (8) is different, which is used to accommodate test tubes of different specifications. The top of the drying chamber body (1) is equipped with a top air inlet pipe (2), and the bottom of the drying chamber body (1) is equipped with a bottom air return pipe (3) to form a vertical circulation path of top air inlet and bottom air return.

2. The multi-diameter test tube drying device according to claim 1, characterized in that: The test tube slot (9) is inclined on the surface of the test tube holder (8) to fix the test tube and allow the water inside to flow out naturally.

3. The multi-diameter test tube drying device according to claim 1, characterized in that: The test tube holder (8) has a card strip (11) fixedly installed on its surface. The U-shaped card holder (7) has a card slot (12) adapted to the card strip (11). The test tube holder (8) is engaged in the U-shaped card holder (7) by the card strip (11) and the card slot (12).

4. The multi-diameter test tube drying device according to claim 1, characterized in that: A fixing sleeve (13) is fixedly installed on one end of the surface of the test tube holder (8). A spring (14) is installed inside the fixing sleeve (13). One end of the spring (14) abuts against one end of a ball head block (15) that is slidably connected inside the fixing sleeve (13). A ball head slot (16) adapted to the ball head block (15) is opened in the U-shaped card seat (7).

5. The multi-diameter test tube drying device according to claim 1, characterized in that: The mounting shaft (6) is fixed with a helical gear (18) at one end through the mounting plate (5). A limit frame (22) is fixedly installed on the bottom surface of the mounting plate (5). A transmission rod (20) is rotatably connected inside the limit frame (22). A helical gear (19) is fixed at one end of the transmission rod (20). The helical gear (19) meshes with the helical gear (18). A servo motor (21) is fixedly installed on one side surface of the drying box body (1). The output end of the servo motor (21) extends into the drying box body (1) and is connected to the other end of the transmission rod (20).

6. The multi-diameter test tube drying device according to claim 1, characterized in that: A flow-deflecting sleeve (17) is fixedly installed at the end of the mounting shaft (6), and the surface of the flow-deflecting sleeve (17) is provided with multiple grooves for flow deflection.

7. The multi-diameter test tube drying device according to claim 1, characterized in that: The bottom surface of the test tube holder (8) is provided with an inverted cone structure water channel (10), which is connected to the test tube slot (9). The surface of the mounting plate (5) is symmetrically provided with two waste boxes (24), which form a disc shape to receive the waste liquid flowing out of the water channel (10). The bottom surface of the waste box (24) is fixed with a protrusion (25), and the surface of the mounting plate (5) is provided with an annular groove (23) that matches the protrusion (25). Both waste boxes (24) are engaged with the surface of the mounting plate (5) through the protrusion (25) and the annular groove (23).

8. The multi-diameter test tube drying device according to claim 1, characterized in that: The drying oven body (1) is equipped with a germicidal lamp (26) for disinfecting test tubes, and the surface of the sealed door (4) is equipped with a viewing window.

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