A nitrogen blowing device with multi-angle airflow guidance

Abstract

This utility model relates to the field of nitrogen blowing concentration technology, and more particularly to a nitrogen blowing device with multi-angle airflow guidance. This utility model provides such a nitrogen blowing device with multi-angle airflow guidance, including a body, a discharge port, nitrogen blowers, a universal adjustment mechanism, and locking columns. The body has evenly spaced discharge ports, and locking columns are installed on both sides of the body. A mounting plate is movably mounted on the locking columns, and several nitrogen blowers are movably mounted on the mounting plate at even intervals. Each nitrogen blower is equipped with a universal adjustment mechanism for adjusting the annular airflow guidance. This utility model achieves precise multi-angle positioning of the nozzle in three-dimensional space by adjusting the pitch rotation of connecting column one within the first bearing seat and the yaw rotation of connecting column two within the second bearing seat, thus achieving the effect of nitrogen gas impacting the edge of the sample liquid surface from multiple oblique angles.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen blowing concentration technology, and in particular to a nitrogen blowing device with multi-angle airflow guidance. Background Technology

[0002] A nitrogen evaporator is a widely used concentration device for sample pretreatment in laboratories. Its principle involves continuously introducing nitrogen gas into the heated sample liquid surface. Utilizing the low solubility and inertness of nitrogen, it carries away solvent vapor above the liquid surface, reducing the partial pressure of the solvent in the gas phase and accelerating the evaporation process. This allows for rapid and gentle concentration of trace or ultra-trace samples. Due to its advantages such as ease of operation, time-saving efficiency, ease of control, and batch processing capability, the nitrogen evaporator has become an indispensable piece of equipment in modern analytical laboratories. It is widely used in sample pretreatment for analytical techniques such as pesticide residue detection, commodity inspection, food safety, environmental monitoring, drug development, biopharmaceuticals, and liquid chromatography (HPLC), gas chromatography (GC), and mass spectrometry (MS).

[0003] However, most existing nitrogen purging devices generally employ a fixed vertical purging mode, where the nitrogen nozzle blows directly at the center of the sample liquid surface. This single airflow method is highly susceptible to droplet splashing, especially when processing small, high-concentration micro-samples (such as samples in 96-well plates), easily leading to sample loss, cross-contamination, or even experimental failure. Secondly, because the airflow is concentrated at the center of the liquid surface, the solvent in the central area evaporates too quickly, while the evaporation in the peripheral areas is slow, forming a "coffee ring effect." This not only prolongs the overall concentration time but may also cause uneven distribution of sample components, affecting the accuracy and repeatability of subsequent analyses. Furthermore, most devices lack flexible airflow direction adjustment capabilities; the nozzle angle is fixed and cannot be adapted to the depth, diameter, or liquid level of the sample container, limiting the versatility and operational flexibility of the equipment.

[0004] Therefore, there is an urgent need for a flexible nitrogen blowing device with multi-angle airflow guidance. Summary of the Invention

[0005] In order to overcome the shortcomings of most nitrogen blowing devices that generally adopt a fixed vertical blowing mode, which easily causes droplet splashing, this utility model provides a nitrogen blowing device with multi-angle airflow guidance.

[0006] The technical solution of this utility model: This utility model provides a nitrogen blowing device with multi-angle airflow guidance, including a body, a discharge port, nitrogen blowers, a universal adjustment mechanism, and locking posts. The body has discharge ports evenly spaced apart, and locking posts are installed on both sides of the body. A mounting plate is movably mounted on the locking posts, and several nitrogen blowers are movably mounted on the mounting plate at even intervals. Each nitrogen blower is equipped with a universal adjustment mechanism for adjustable annular airflow guidance. The universal adjustment mechanism includes a connecting concave block, a connecting convex block, a transmission plate, a first bearing seat, and a connecting post. The nitrogen blower consists of a connecting column 2, a second bearing seat, and a nozzle. A connecting recess is installed on one side of the nitrogen blower, and a connecting protrusion is installed on the other side. The connecting recess and the connecting protrusion are engaged. A first bearing seat is installed on both the connecting recess and the connecting protrusion. A connecting column 1 is rotatably installed on the first bearing seat. A transmission plate is connected to the connecting column 1. A second bearing seat is symmetrically installed on the transmission plate, and the axes of the first bearing seat and the second bearing seat are perpendicular to each other, forming a cross-shaped layout. A connecting column 2 is rotatably installed on the second bearing seat, and a nozzle is connected to the connecting column 2.

[0007] Preferably, it also includes rubber rings, and a plurality of rubber rings are provided on the mounting plate.

[0008] Preferably, it also includes rubber pads, and several rubber pads are provided on the machine body.

[0009] Preferably, the card post is provided with evenly spaced insertion holes.

[0010] Preferably, it also includes limiting bolts, which are movably installed on the insertion hole, and the limiting bolts are all threadedly connected to the mounting plate.

[0011] Preferably, the discharge port is made of a flexible material.

[0012] The beneficial effects of this utility model are: This invention achieves precise multi-angle positioning of the nozzle in three-dimensional space by adjusting the pitch rotation of the first connecting column in the first bearing seat and the yaw rotation of the second connecting column in the second bearing seat, thereby achieving the effect of nitrogen gas impacting the edge of the sample liquid surface from multiple oblique angles.

[0013] This invention uses limit bolts inserted into adjustment holes at different heights of the clamping post to fix the mounting plate, and utilizes the elastic clamping effect of the rubber rings around the mounting holes to achieve stepped adjustment and stable installation of the nitrogen blower, thus achieving precise alignment of the sample container and preventing loosening and falling off. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the universal adjustment mechanism of this utility model.

[0016] Figure 3 This is a bottom view of the three-dimensional structure of this utility model.

[0017] The markings in the attached diagram are as follows: 1-Main body, 2-Discharge port, 3-Nitrogen blower, 4-Universal adjustment mechanism, 401-Connecting recess, 402-Connecting protrusion, 403-Transmission plate, 404-First bearing seat, 405-Connecting column one, 406-Connecting column two, 407-Second bearing seat, 408-Nozzle, 5-Clamping column, 6-Limiting bolt, 7-Rubber ring, 8-Rubber pad. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Example 1: A nitrogen blowing device with multi-angle airflow guidance, such as Figure 1 and Figure 2 As shown, the device includes an organism 1, discharge ports 2, nitrogen blowers 3, a universal adjustment mechanism 4, and retaining posts 5. The organism 1 has 16 discharge ports 2 arranged in a regular rectangular pattern, arranged in four rows and four columns, suitable for batch processing of standard microplates, test tube racks, or centrifuge tube arrays. The discharge ports 2 are made of flexible materials such as silicone or elastic rubber, providing good elasticity and sealing. Retaining posts 5 are installed on both sides of the organism 1, and mounting plates are movably mounted on the retaining posts 5. Nitrogen blowers 3, also arranged in a similar four rows and four columns, are movably mounted on the mounting plates. Each nitrogen blower 3 is equipped with an independent universal adjustment mechanism 4, used to achieve flexible multi-angle guidance of nitrogen gas, forming an adjustable annular or oblique airflow field. The universal adjustment mechanism 4 includes a connecting concave block 401, a connecting protrusion 402, a transmission plate 403, a first bearing seat 404, a first connecting post 405, and a second connecting post 406. The nitrogen blower 3 is equipped with a second bearing seat 407 and a nozzle 408. A connecting recess 401 is installed on the nitrogen blower 3, and a connecting protrusion 402 is snapped onto the connecting recess 401. The connecting recess 401 and the connecting protrusion 402 are combined by a snap-fit ​​structure to form a complete annular connecting base, which facilitates modular assembly and later maintenance. A first bearing seat 404 is provided in the middle of the inner side of both the connecting recess 401 and the connecting protrusion 402. A first connecting post 405 is rotatably provided in the first bearing seat 404. A transmission plate 403 is connected to both first connecting posts 405. A second bearing seat 407 is symmetrically provided on the transmission plate 403, and the axis of the first bearing seat 404 is perpendicular to the axis of the second bearing seat 407 to ensure that the two rotational degrees of freedom are independent. A second connecting post 406 is rotatably provided on the second bearing seat 407, and a nozzle 408 is connected to both second connecting posts 406.

[0020] When efficient and safe concentration of samples is required, the rotation of the connecting column 405 on both sides on the first bearing seat 404 is adjusted, which drives the transmission plate 403 to adjust the pitch angle. At the same time, the connecting column 406 can rotate in the second bearing seat 407 in the cross direction, thereby driving the nozzle 408 to adjust the yaw angle. The two sets of rotational degrees of freedom are perpendicular to each other and work together to enable the nozzle 408 to be flexibly positioned in three-dimensional space, so that nitrogen gas can be accurately directed to the edge of the sample liquid surface from multiple oblique angles. Multiple streams of nitrogen gas from various oblique angles converge at the outer periphery of the liquid surface, forming a strong airflow disturbance, which significantly improves the solvent evaporation efficiency.

[0021] Example 2: Based on Example 1, such as Figure 1 and Figure 3 As shown, it also includes rubber rings 7, rubber pads 8, and limiting bolts 6. Rubber rings 7 are provided on the mounting plate at the mounting holes corresponding to the four rows and four columns of nitrogen evaporators 3, with a number and layout perfectly matching each other. Each rubber ring 7 is embedded in the inner circumference of the mounting hole on the mounting plate. Rubber pads 8 are attached to the four corners of the bottom of the body 1, effectively increasing the friction between the device and the experimental table surface, preventing the equipment from sliding due to vibration or accidental contact during operation, and ensuring stable operation. Eight evenly spaced insertion holes are provided on the locking post 5 for multi-level height adjustment of the mounting plate. Limiting bolts 6 are movably installed on the insertion holes. Two limiting bolts 6 are threadedly connected to the mounting plate in two opposite insertion holes. By selecting different combinations of insertion holes of different heights, the mounting plate can be precisely fixed in the required position, thereby adjusting the overall height of the nitrogen evaporator 3 to accommodate different sample volumes, ensuring that the 408 maintains the optimal distance from the sample liquid surface, and improving purging efficiency and concentration uniformity.

[0022] When the nitrogen blowing position needs to be adjusted according to the sample, the limiting bolt 6 can be inserted into the adjustment hole corresponding to the required height on the two side posts 5 of the machine body 1, thereby fixing the mounting plate at the specified height position, realizing the step adjustment of the overall height of the nitrogen blower 3, ensuring that the nozzle 408 can be accurately aligned with the mouth of the sample container, avoiding the reduction of purging efficiency or sample contamination due to improper height. In addition, the mounting hole on the mounting plate for mounting the nitrogen blower 3 is surrounded by a highly elastic rubber ring 7. When the nitrogen blower 3 is inserted, its outer wall can squeeze the rubber ring 7 to make it expand elastically. Then the rubber ring 7 tightly wraps around the outer wall of the nitrogen blower 3, forming a stable interference fit.

[0023] The above-described embodiments are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A nitrogen blowing device with multi-angle airflow guidance, comprising a body (1), a discharge port (2), nitrogen blowers (3), and clamping posts (5), wherein the body (1) is provided with discharge ports (2) at uniform intervals, clamping posts (5) are installed on both sides of the body (1), and mounting plates are movably installed on the clamping posts (5), and a plurality of nitrogen blowers (3) are movably installed on the mounting plates at uniform intervals, characterized in that, It also includes a universal adjustment mechanism (4). The nitrogen blower (3) is provided with a universal adjustment mechanism (4) for adjusting the annular airflow direction. The universal adjustment mechanism (4) includes a connecting recess (401), a connecting protrusion (402), a transmission plate (403), a first bearing seat (404), a connecting post one (405), a connecting post two (406), a second bearing seat (407), and a nozzle (408). The connecting recess (401) is installed on one side of the nitrogen blower (3), and the connecting protrusion (402) is installed on the other side. The connecting recess (401) and the connecting protrusion (402) are engaged. A first bearing seat (404) is installed on both the block (401) and the connecting protrusion (402). A connecting column (405) is rotatably installed on the first bearing seat (404). A transmission plate (403) is connected to the connecting column (405). A second bearing seat (407) is symmetrically installed on the transmission plate (403). The axis of the first bearing seat (404) and the axis of the second bearing seat (407) are perpendicular to each other and arranged in a cross pattern. A second connecting column (406) is rotatably installed on the second bearing seat (407). A nozzle (408) is connected to the second connecting column (406).

2. The nitrogen blowing device with multi-angle air flow guide according to claim 1, characterized in that, It also includes rubber rings (7), and several rubber rings (7) are provided on the mounting plate.

3. The nitrogen blowing device with multi-angle air flow guide according to claim 2, characterized in that, It also includes rubber pads (8), and several rubber pads (8) are provided on the body (1).

4. The nitrogen blowing device with multi-angle air flow guide according to claim 3, characterized in that, The card post (5) has evenly spaced insertion holes.

5. The nitrogen blowing device with multi-angle air flow guide according to claim 4, characterized in that, It also includes a limit bolt (6), and the limit bolt (6) is movablely installed on the socket. The limit bolt (6) is threadedly connected to the mounting plate.

6. A nitrogen blowing device with multi-angle airflow guidance according to claim 5, characterized in that, The discharge port (2) is made of flexible material.

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