A new type of nitrogen blowing device

Abstract

This utility model relates to the field of nitrogen evaporation apparatus technology, and more particularly to a novel nitrogen evaporation apparatus that solves the problem that most traditional nitrogen evaporation apparatuses in the prior art use a rigid fixed structure for the blowing needle or gas outlet conduit, whose position is set at the factory and cannot be flexibly adjusted according to the actual arrangement of sample containers. The novel nitrogen evaporation apparatus includes a frame, with a support plate slidably connected to the inner side of the frame, and a first cylinder fixedly connected to the top side of the frame by bolts. This utility model enables electric adjustment of the overall height of the connecting pipe and multiple gas outlet pipes connected to it, significantly improving the flexibility and adjustability of the gas outlet position. This allows experimenters to precisely control the distance between the blowing needle and the liquid surface according to the container height, liquid level, or process requirements, avoiding sample splashing due to excessively close distance or low purging efficiency due to excessively far distance, thus improving the uniformity and controllability of the nitrogen evaporation process.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen blowing device technology, and in particular to a novel nitrogen blowing device. Background Technology

[0002] A nitrogen evaporator is a widely used sample pretreatment device in laboratories. It continuously blows high-purity nitrogen gas into a container holding a sample solution, using the nitrogen flow to accelerate solvent evaporation, thereby achieving rapid and gentle concentration of multiple samples. As a key device for sample preparation in fields such as biopharmaceuticals, environmental monitoring, food safety, and chemical analysis, the evaporation efficiency, operational flexibility, and adaptability to different sample containers of a nitrogen evaporator have a decisive impact on the uniformity, throughput, and accuracy of the final analytical results. Especially in the core step of simultaneous concentration in multi-well plates or irregularly arranged centrifuge tubes, existing nitrogen evaporators have gradually revealed a series of significant limitations and technical problems when processing sample containers of different sizes and arrangements.

[0003] Specifically, existing nitrogen evaporators generally suffer from fixed outlet positions and inconvenient adjustment during practical use. Most traditional nitrogen evaporators employ rigid, fixed structures for their blow needles or outlet conduits, with positions pre-set at the factory, making flexible adjustment impossible based on the actual arrangement of sample containers. When nitrogen evaporation is required for samples with non-standard spacing or varying heights, users often struggle to precisely align the blow needle with the center of each container opening, leading to skewed nitrogen flow, uneven purging, and even splashing or cross-contamination. Therefore, addressing the core problem of existing nitrogen evaporators—the inconvenience of adjusting the outlet position and thus hindering nitrogen purging of materials at different locations—we urgently need an innovative nitrogen evaporator structure to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a novel nitrogen evaporator that solves the problem that most traditional nitrogen evaporators in the prior art use a rigid fixed structure for the blowing needle or gas outlet tube, whose position is set at the factory and cannot be flexibly adjusted according to the actual arrangement of the sample containers. When nitrogen evaporation is required for samples with non-standard spacing and different heights, users often find it difficult to accurately align the blowing needle with the center of each container opening, resulting in skewed nitrogen flow, uneven purging, and even splashing or cross-contamination.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A novel nitrogen blowing device includes a frame, a support plate slidably connected to the inner side of the frame, and a first cylinder fixedly connected to the top side of the frame by bolts. The output shaft of the first cylinder passes through the top of the frame and is fixedly connected to the top of the support plate. A connecting pipe is slidably connected to the bottom of the support plate. A support frame is fixedly connected to the bottom inner side of the frame, and a pump body is fixedly connected to one side of the outer wall of the support frame by bolts. The outlet of the pump body is connected to one end of the connecting pipe. Several support cylinders are fixedly connected to the inner side of the support frame, and buffer pads are elastically connected to the inner side of all support cylinders. Several air outlet pipes are connected to the bottom of the connecting pipe.

[0006] Preferably, a side plate is fixedly connected to one side of the bearing plate, and a second cylinder is fixedly connected to one side of the side plate by bolts, and the output shaft of the second cylinder passes through the side plate, wherein the output shaft of the second cylinder is fixedly connected to one side of the connecting pipe.

[0007] Preferably, sliders are fixedly connected to both sides of the support plate, and both sliders are slidably connected to the side wall of the frame through a sliding groove. Telescopic rods are fixedly connected to the four corners of the top of the support plate, and the top of each telescopic rod is fixedly connected to the top of the inner side of the frame.

[0008] Preferably, sliding blocks are fixedly connected to both sides of the top of the connecting pipe, and both sliding blocks are slidably connected to the bearing plate through sliding grooves.

[0009] Preferably, a flexible hose is connected to the outlet of the pump body, and one end of the flexible hose is connected to one end of the connecting pipe.

[0010] Preferably, all the bottom of the buffer pads are fixedly connected to dampers, and the bottom of all the dampers are fixedly connected to the inner bottom of the load-bearing frame.

[0011] This utility model has the following beneficial effects: By incorporating a sliding support plate within the frame, driven by a first cylinder to raise and lower, the overall height of the connecting pipe and its multiple connected outlet pipes is electrically adjustable. This significantly enhances the flexibility and adjustability of the outlet position, allowing researchers to precisely control the distance between the blow needle and the liquid surface based on container height, liquid level, or process requirements. This avoids sample splashing due to excessive distance or low purging efficiency due to excessive distance, improving the uniformity and controllability of the nitrogen blowing process. The sliding connection structure between the support plate and the frame ensures the smoothness and straightness of the raising and lowering process, reducing vibration interference with the sample. The sliding connection design between the connecting pipe and the support plate allows for unobstructed airflow during raising and lowering, ensuring structural stability and reliability. The pump body is mounted on the outer wall of the support frame, independent of moving parts, improving the stability of the power system. The support cylinder, in conjunction with the internal buffer pad... It can stably accommodate sample tubes of different sizes, preventing them from tipping over or colliding, while the elastic properties of the cushioning pad protect fragile containers such as glassware. The layout of multiple vent tubes can be customized according to standard or non-standard sample arrangements. Combined with the height adjustment function, it greatly enhances the adaptability of the equipment to different experimental scenarios, avoiding uneven purging, cross-contamination, or repetitive operations caused by misalignment in traditional equipment, thus improving work efficiency and the consistency of experimental results. The overall structure, by introducing a height-adjustable vent component, breaks through the limitations of fixed blow needles, which not only simplifies the operation process and reduces human intervention, but also improves the versatility and ease of use of the nitrogen evaporator. It is particularly suitable for laboratory environments that require frequent changes of container types or processing of multiple batches and sizes of samples, effectively meeting the demands of modern analytical pretreatment for equipment flexibility and high efficiency. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall main structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the rear view structure of this utility model; Figure 4 This is a schematic diagram of the bearing plate structure of this utility model; Figure 5 This is a schematic diagram of the load-bearing frame structure of this utility model.

[0014] In the diagram: 1. Frame; 2. Bearing plate; 3. Slider; 4. Slide groove; 5. First cylinder; 6. Telescopic rod; 7. Bearing frame; 8. Support cylinder; 9. Pump body; 10. Hose; 11. Connecting pipe; 12. Air outlet pipe; 13. Side plate; 14. Second cylinder; 15. Sliding block; 16. Sliding groove; 17. Buffer pad; 18. Damper. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] Reference Figure 1-5 A novel nitrogen blowing device includes a frame 1, a support plate 2 slidably connected to the inner side of the frame 1, and a first cylinder 5 fixedly connected to one side of the top of the frame 1 by bolts. The output shaft of the first cylinder 5 passes through the top of the frame 1, and the output shaft of the first cylinder 5 is fixedly connected to the top of the support plate 2. A connecting pipe 11 is slidably connected to the bottom of the support plate 2. A support frame 7 is fixedly connected to the bottom of the inner side of the frame 1, and a pump body 9 is fixedly connected to one side of the outer wall of the support frame 7 by bolts. The outlet of the pump body 9 is connected to one end of the connecting pipe 11. Several support cylinders 8 are fixedly connected to the inner side of the support frame 7, and buffer pads 17 are elastically connected to the inner side of all support cylinders 8. Several air outlet pipes 12 are connected to the bottom of the connecting pipe 11.

[0017] First, the sample containers requiring nitrogen purging are placed one by one into several support cylinders 8 located inside the support frame 7. The support cylinders 8 position and fix the containers, while their inner elastically connected buffer pads 17 can adapt to containers of different outer diameters, providing flexible support and preventing damage due to collisions. Then, the pump 9 is activated, pressurizing high-purity nitrogen from an external nitrogen source and delivering it to the connecting pipe 11 connected to its outlet. The nitrogen gathers in the connecting pipe 11 and then enters each support cylinder 8 through multiple outlet pipes 12 connected to its bottom, continuously purging the internal samples to achieve solvent evaporation and concentration. During operation, if necessary, the distance between the outlet pipe 12 and the sample liquid surface needs to be adjusted to adapt to different conditions. For containers of different heights or to optimize purging intensity, the first cylinder 5 fixed to the top of the frame 1 can be activated. The output shaft of the first cylinder 5 extends downward, pushing the support plate 2 fixedly connected to it to slide up and down along the inner side of the frame 1. Since the connecting pipe 11 is slidably connected to the bottom of the support plate 2, the entire gas outlet assembly rises and falls synchronously with the support plate 2, thereby achieving uniform and stepless adjustment of the height of all gas outlet pipes 12, ensuring that the nitrogen flow can be accurately and vertically blown into the center of each container opening, avoiding deflection or splashing. After a set of samples has been processed, the pump body 9 and the first cylinder 5 are turned off, the processed container is removed, and the above process is repeated after replacing the new sample. The purging height and time can be flexibly adjusted according to experimental needs.

[0018] Furthermore, a side plate 13 is fixedly connected to one side of the support plate 2, and a second cylinder 14 is fixedly connected to one side of the side plate 13 by bolts. The output shaft of the second cylinder 14 passes through the side plate 13, and the output shaft of the second cylinder 14 is fixedly connected to one side of the connecting pipe 11. When it is necessary to adjust the horizontal position of the outlet pipe 12 to adapt to sample containers with different arrangements, the second cylinder 14 fixed on the side plate 13 is activated, and its output shaft pushes or pulls the connecting pipe 11 fixedly connected to it, so that the connecting pipe 11 moves horizontally along the sliding direction on the support plate 2, thereby driving all the outlet pipes 12 to move laterally as a whole, achieving the effect of adjusting the position of the outlet in the horizontal direction. This further improves the adaptability of the nitrogen blower to samples with non-standard spacing or irregular arrangement, and enables the blow needle to accurately align with the center of the mouth of various containers, avoiding uneven blowing or cross-contamination caused by airflow deviation.

[0019] Furthermore, sliders 3 are fixedly connected to both sides of the support plate 2, and both sliders 3 are slidably connected to the side wall of the frame 1 through the slide groove 4. Telescopic rods 6 are fixedly connected to the four corners of the top of the support plate 2, and the top of the telescopic rods 6 are fixedly connected to the top of the inner side of the frame 1. When the first cylinder 5 drives the support plate 2 to move up and down, the sliders 3 on both sides of the support plate 2 slide synchronously in the slide groove 4 of the side wall of the frame 1. At the same time, the telescopic rods 6 at the four corners of the top of the support plate 2 extend and retract accordingly, achieving the effect of providing stable and precise vertical guidance and motion support for the support plate 2, effectively preventing it from shaking, tilting or jamming during the lifting process, improving the smoothness of the lifting action and the repeatability of the positioning accuracy. At the same time, the telescopic rods 6 also play an auxiliary support and limiting role, enhancing the rigidity of the overall structure and the reliability of operation.

[0020] Furthermore, sliding blocks 15 are fixedly connected to both sides of the top of the connecting pipe 11, and both sliding blocks 15 are slidably connected to the bearing plate 2 through sliding grooves 16. When the second cylinder 14 pushes the connecting pipe 11 to move horizontally, the sliding blocks 15 on both sides of the top of the connecting pipe 11 slide in the sliding grooves 16 on the bearing plate 2, which achieves the effect of providing horizontal linear guidance and stable support for the connecting pipe 11, ensuring that it remains stable and smooth during the lateral adjustment process, preventing the increase of movement resistance or jamming due to uneven load or friction, improving the accuracy of horizontal adjustment and operational flexibility, and working together with the second cylinder 14 to achieve stable operation of multi-dimensional adjustment.

[0021] Furthermore, a hose 10 is connected to the outlet of the pump body 9, and one end of the hose 10 is connected to one end of the connecting pipe 11. The nitrogen gas output by the pump body 9 is delivered to one end of the connecting pipe 11 through the hose 10. Due to the good flexibility and bendability of the hose 10, the continuity and sealing of the air circuit are maintained during the process of the connecting pipe 11 moving up and down with the support plate 2 or moving horizontally with the second cylinder 14. This effectively compensates for the relative displacement between the moving parts and the fixed parts, avoids fatigue fracture or interface leakage of rigid pipes due to repeated movement, and improves the safety and durability of the air circuit system.

[0022] Furthermore, all the buffer pads 17 are fixedly connected to the bottom of a damper 18, and the bottom of all the dampers 18 are fixedly connected to the inner bottom of the support frame 7. When the sample container is placed into the support cylinder 8 or the equipment is subjected to external vibration, the buffer pad 17 deforms, and the damper 18 connected to its bottom is compressed or stretched accordingly. The vibration energy is consumed through the internal damping medium, thereby enhancing the shock absorption and buffering effect of the support cylinder 8 on the sample container. This effectively suppresses the transmission of vibration caused by operational collisions or equipment operation, preventing the sample container from shaking, tipping over or breaking. In particular, it provides a higher level of protection for fragile containers such as glass centrifuge tubes, improving the stability of equipment operation and the safety of sample processing. In summary: When nitrogen purging is required for the sample, containers containing the sample solution are first inserted one by one into several support cylinders 8 located inside the support frame 7. The support cylinders 8 provide positioning and support for the containers. The buffer pads 17, which are elastically connected inside, automatically adapt to the outer diameter of the containers and provide flexible clamping. At the same time, the dampers 18 connected to the bottom of the buffer pads 17 are fixed to the bottom of the inner side of the support frame 7. They can absorb impact energy through damping when the container is placed in or when the equipment vibrates, effectively preventing the container from tipping over or breaking due to collision or shaking. Subsequently... The pump body 9 is activated, pressurizing external high-purity nitrogen gas and delivering it through the hose 10 at its outlet to one end of the connecting pipe 11. The flexibility of the hose 10 allows it to maintain unobstructed airflow during subsequent movement. After entering the connecting pipe 11, the nitrogen gas is vertically blown into the sample containers inside each support cylinder 8 through multiple outlet pipes 12 connected to its bottom, achieving solvent evaporation and concentration. During operation, if it is necessary to adjust the distance between the outlet pipe 12 and the liquid surface to accommodate containers of different heights, the first cylinder 5 fixed to the top of the frame 1 can be activated. The output shaft extends downwards, pushing the fixedly connected support plate 2 to move up and down along the inner side of the frame 1. The sliders 3 on both sides of the support plate 2 slide in the grooves 4 on the side wall of the frame 1, providing vertical guidance. At the same time, the telescopic rods 6 at the four corners at the top of the support plate 2 extend and retract synchronously, providing auxiliary support and limiting function to ensure that the support plate 2 rises and falls smoothly without tilting. Since the connecting pipe 11 slides in the sliding groove 16 of the support plate 2 through the sliding block 15 at its top, the entire air outlet assembly rises and falls synchronously with the support plate 2, realizing the air outlet pipe 12 The height is infinitely adjustable; if it is necessary to adjust the horizontal position of the air outlet pipe 12 to align with the non-standard arrangement of containers, the second cylinder 14 fixed on the side plate 13 can be activated. Its output shaft pushes or pulls the part fixedly connected to one side of the connecting pipe 11, so that the connecting pipe 11 drives all the air outlet pipes 12 to move as a whole along the transverse direction of the support plate 2. The sliding block 15 slides in the sliding groove 16 to ensure the stability of the horizontal movement; after the purging is completed, the pump body 9 and each cylinder are turned off, the processed container is taken out, and the above process is repeated after replacing the new sample.The first cylinder 5 drives the support plate 2 to slide up and down along the frame 1, realizing the electric adjustment of the overall height of the connecting pipe 11 and the air outlet pipe 12. This significantly improves the adaptability to different container heights and avoids splashing or low purging efficiency caused by improper needle distance. The cooperation between the slider 3 and the slide groove 4 provides precise vertical guidance for the support plate 2, and the telescopic rod 6 enhances the structural rigidity and operational stability, ensuring a smooth and reliable lifting process. The second cylinder 14 pushes the connecting pipe 11 to move laterally on the support plate 2. Combined with the guiding effect of the sliding block 15 and the sliding groove 16, the horizontal position of the air outlet pipe 12 can be flexibly adjusted, enabling the equipment to accurately match samples with different spacings or irregular arrangements, improving the uniformity and accuracy of purging, and avoiding cross-contamination. The setting of the hose 10 effectively compensates for the lifting and horizontal movement of the connecting pipe 11. The displacement during the movement ensures the continuity and sealing of the gas path during dynamic processes, preventing fatigue damage or leakage that is prone to occur in rigid pipes. The buffer pad 17 set inside the support cylinder 8 can adapt to containers with different outer diameters, providing flexible fixation, while the damper 18 connected to the bottom of the buffer pad 17 further enhances the shock absorption and buffering effect, effectively protecting fragile sample containers such as glass centrifuge tubes, improving operational safety and equipment durability. The overall structure, by introducing a vertical and horizontal dual-dimensional adjustment mechanism, flexible gas path connection, and enhanced buffer support, significantly improves the operational flexibility, sample adaptability, and operational stability of the nitrogen blower. It not only simplifies experimental operations and reduces human error, but also significantly improves processing efficiency and the reliability of results, better meeting the complex needs of modern laboratories for high-throughput, multi-specification sample pretreatment equipment.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A new nitrogen purger comprising a frame (1), characterized in that, The inner side of the frame (1) is slidably connected to a bearing plate (2), and the top side of the frame (1) is fixedly connected to a first cylinder (5) by bolts. The output shaft of the first cylinder (5) passes through the top of the frame (1). The output shaft of the first cylinder (5) is fixedly connected to the top of the bearing plate (2). The bottom of the bearing plate (2) is slidably connected to a connecting pipe (11). The bottom of the inner side of the frame (1) is fixedly connected to a bearing frame (7), and the outer wall of the bearing frame (7) is fixedly connected to a pump body (9) by bolts. The outlet of the pump body (9) is connected to one end of the connecting pipe (11). The inner side of the bearing frame (7) is fixedly connected to several support cylinders (8), and the inner side of all the support cylinders (8) is elastically connected to a buffer pad (17). The bottom of the connecting pipe (11) is connected to several air outlet pipes (12).

2. A novel nitrogen purger according to claim 1, wherein, A side plate (13) is fixedly connected to one side of the bearing plate (2), and a second cylinder (14) is fixedly connected to one side of the side plate (13) by bolts. The output shaft of the second cylinder (14) passes through the side plate (13), and the output shaft of the second cylinder (14) is fixedly connected to one side of the connecting pipe (11).

3. A novel nitrogen purger according to claim 1, wherein, Both sides of the bearing plate (2) are fixedly connected with sliders (3), and both sliders (3) are slidably connected to the side wall of the frame (1) through the sliding groove (4). The top four corners of the bearing plate (2) are fixedly connected with telescopic rods (6), and the top of the telescopic rods (6) are fixedly connected to the top of the inner side of the frame (1).

4. A novel nitrogen purger according to claim 1, wherein, Both sides of the top of the connecting pipe (11) are fixedly connected to sliding blocks (15), and both sliding blocks (15) are slidably connected to the bearing plate (2) through sliding grooves (16).

5. A novel nitrogen purger according to claim 1, wherein, The outlet of the pump body (9) is connected to a hose (10), and one end of the hose (10) is connected to one end of the connecting pipe (11).

6. A novel nitrogen purger according to claim 1, wherein, All of the buffer pads (17) are fixedly connected to the bottom of a damper (18), and the bottom of all the dampers (18) are fixedly connected to the inner bottom of the support frame (7).

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