A diffuser tube liquid level maintenance device

Abstract

The application discloses a diffusion tube liquid level maintaining device, which comprises a diffusion tube, a support, a liquid level detecting unit, a liquid supplementing micro pulse pump and a sampling micro pulse pump, the outer side of the diffusion tube is provided with the support, the liquid level detecting unit comprises a liquid level sensor, a support above the liquid level sensor, a support above the liquid level sensor, a support below the liquid level sensor, a locking bolt of the support above the liquid level sensor and a locking bolt of the support above the liquid level sensor, and the diffusion tube and the liquid level detecting unit are both installed on the support. In order to better use the diffusion tube liquid level maintaining device, the absorption liquid is manually injected into the diffusion tube, so that the liquid level reaches the expected position, then the mechanism part of the liquid level detecting unit is adjusted, so that the liquid level sensor can detect the liquid level position, at this time, the test program of the liquid level sensor is started, and the detection work is carried out, so that the liquid level of the absorption liquid is basically maintained in the fixed height range.

Description

Technical Field

[0001] This invention relates to the field of diffuser tubes, and particularly to a diffuser tube liquid level maintaining device. Background Technology

[0002] A rotary annular wet diffuser, or simply a diffuser, consists of two concentric glass tubes. A micro-pulse pump injects absorbent into the annular space of the diffuser. Driven by an external power source, the diffuser rotates around its axis, forming absorbent films on the inner and outer walls of both the outer and inner tubes. The sample, propelled by a vacuum pump, flows through the annular space of the diffuser in a laminar flow state. Gaseous contaminants in the sample are absorbed by the absorbent film on the tube walls, while aerosols pass through the diffuser due to inertia. A micro-pulse pump then extracts the absorbent from the diffuser and transfers it to a storage bottle.

[0003] The absorption efficiency for gas samples and the separation efficiency for aerosol samples are the most important indicators for evaluating the performance of a diffuser. The main parameters affecting diffuser performance include sample flow rate, diffuser rotation speed, and absorbent liquid level. This device primarily addresses the impact of liquid level on diffuser performance. When the liquid level is too high, it obstructs aerosols from passing through the diffuser, reducing the separation efficiency of aerosol samples; conversely, when the liquid level is too low, the absorption efficiency for gas samples decreases. Therefore, a diffuser level maintaining device is needed to keep the absorbent liquid level essentially within a fixed range. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a diffusion tube liquid level maintenance device.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] This invention discloses a diffuser-type liquid level maintaining device, comprising a diffuser, a support, a liquid level detection unit, a replenishment micro-pulse pump, and a sampling micro-pulse pump. The support is provided on the outer side of the diffuser. The liquid level detection unit includes a liquid level sensor, an upper support for the liquid level sensor, an upper bracket for the liquid level sensor, a lower bracket for the liquid level sensor, a locking bolt for the upper bracket for the liquid level sensor, and a locking bolt for the upper support for the liquid level sensor. Both the diffuser and the liquid level detection unit are mounted on the support.

[0007] As a preferred embodiment of the present invention, a liquid level sensor upper support is provided on the rear side of the liquid level sensor, a liquid level sensor upper bracket is provided on the outer side of the liquid level sensor upper support, a liquid level sensor upper support locking bolt is provided between the liquid level sensor upper bracket and the liquid level sensor upper support, a liquid level sensor lower bracket is provided on the outer side of the liquid level sensor upper bracket, and a liquid level sensor upper bracket locking bolt is provided between the liquid level sensor lower bracket and the liquid level sensor upper bracket.

[0008] As a preferred embodiment of the present invention, the lower support of the liquid level sensor has an arc-shaped hole on each side, the arc of which is consistent with the arc of the inner and outer tubes of the diffuser. The upper support of the liquid level sensor slides within the arc-shaped hole, and the sliding angle is - degrees.

[0009] As a preferred embodiment of the present invention, the upper support of the liquid level sensor is movably connected to the upper support locking bolt of the liquid level sensor, and there is an elongated hole on each side of the front end of the upper support of the liquid level sensor. The upper support of the liquid level sensor and the upper support of the liquid level sensor are movably connected through the upper support locking bolt of the upper support of the liquid level sensor and the elongated hole.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] In order to better utilize the diffuser tube level holding device, the present invention manually injects the absorbent liquid into the diffuser tube so that the liquid level reaches the desired position. Then, by adjusting the mechanism of the level detection unit, the level sensor can just detect the liquid level position. At this time, the test program of the level sensor is started to perform the detection work, so that the absorbent liquid level is basically maintained within a fixed height range. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 This is a partial structural schematic diagram of the present invention;

[0015] Figure 3 This is a schematic diagram of the operating components of the present invention;

[0016] In the diagram: 1. Diffuser; 2. Support; 3. Liquid level sensor; 4. Upper support for liquid level sensor; 5. Upper bracket for liquid level sensor; 6. Lower bracket for liquid level sensor; 7. Locking bolt for upper bracket of liquid level sensor; 8. Locking bolt for upper support of liquid level sensor. Detailed Implementation

[0017] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0018] In the attached diagram, all identical reference numerals refer to the same components.

[0019] Example 1

[0020] like Figure 1-3 As shown, the present invention provides a diffuser level maintaining device, including a diffuser 1, a support 2, a level detection unit, a replenishment micro-pulse pump and a sampling micro-pulse pump. The support 2 is provided on the outside of the diffuser 1. The level detection unit includes a level sensor 3, a level sensor upper support 4, a level sensor upper bracket 5, a level sensor lower bracket 6, a level sensor upper bracket locking bolt 7 and a level sensor upper support locking bolt 8. The diffuser 1 and the level detection unit are both mounted on the support 2.

[0021] Furthermore, a liquid level sensor upper support 4 is provided on the rear side of the liquid level sensor 3, a liquid level sensor upper bracket 5 is provided on the outer side of the liquid level sensor upper support 4, a liquid level sensor upper support locking bolt 8 is provided between the liquid level sensor upper bracket 5 and the liquid level sensor upper support 4, a liquid level sensor lower bracket 6 is provided on the outer side of the liquid level sensor upper bracket 5, and a liquid level sensor upper bracket locking bolt 7 is provided between the liquid level sensor lower bracket 6 and the liquid level sensor upper bracket 5.

[0022] The lower bracket 6 of the liquid level sensor has an arc-shaped hole on each side, and the arc is consistent with the arc of the inner and outer tubes of the diffuser tube 1. The upper bracket 4 of the liquid level sensor slides in the arc-shaped hole, and the sliding angle is 75-80 degrees.

[0023] The upper bracket 5 of the liquid level sensor is movably connected to the upper bracket locking bolt 7 of the liquid level sensor. There is an elongated hole on each side of the front end of the upper bracket 5. The upper support 4 of the liquid level sensor and the upper bracket 5 of the liquid level sensor are movably connected through the upper support locking bolt 8 of the liquid level sensor and the elongated hole.

[0024] Specifically, during use, the lower bracket 6 of the liquid level sensor has an arc-shaped hole on each side, the curvature of which is consistent with the curvature of the inner and outer tubes of the diffuser tube 1, allowing the upper bracket 5 of the liquid level sensor to slide within the hole at a sliding angle of 77 degrees. The upper bracket 5 of the liquid level sensor can rotate around the upper bracket locking bolt 7 of the liquid level sensor, which can adjust the angle and height of the liquid level sensor 3. The upper bracket 5 of the liquid level sensor has an elongated hole on each side of its front end, and the upper bracket 4 of the liquid level sensor, on which the liquid level sensor 3 is installed, can slide back and forth to adjust the distance between the liquid level sensor 3 and the diffuser tube 1. The maximum distance can be adjusted to 10 mm. The upper bracket 4 of the liquid level sensor can rotate around the upper bracket locking bolt 8 of the liquid level sensor, which can adjust the angle, distance, and height between the liquid level sensor 4 and the diffuser tube 1.

[0025] To better utilize the diffuser tube level holding device, a sensor position adjustment program was set up. First, the absorbent was manually injected into the diffuser tube 1 until the liquid level reached the desired position. Then, the mechanism of the level detection unit was adjusted so that the level sensor 3 could detect the liquid level. At this point, the test program for the level sensor 3 was started. The test rule was that after the micro-pulse pump removed 1 ml of absorbent, the level detection unit could detect that the liquid level was insufficient. Then, sampling was stopped and replenishment began. The level detection unit could detect the liquid level after 3 to 5 seconds of replenishment. If the current position could not meet the current rule, the sensor position needed to be fine-tuned and the test repeated until it was completed.

[0026] Meanwhile, as the equipment is running, the diffuser tube 1 rotates at a predetermined speed, and the equipment's air pump starts, causing the airflow through the diffuser tube 1 to cause the absorbent liquid level to fluctuate continuously. The fluctuation of the liquid level will cause the liquid level sensor 3 to deviate in its detection. To address this issue, through repeated experiments and tests, a liquid level detection anti-interference algorithm has been developed, which, together with the liquid level detection unit, can accurately detect the liquid level height.

[0027] During equipment sampling, the replenishment micro-pulse pump and the sampling micro-pulse pump operate at the set flow rate. When the liquid level detection unit detects that the liquid level is insufficient, the replenishment micro-pulse pump will quickly replenish the liquid. When the liquid level detection unit detects the liquid level, the replenishment micro-pulse pump will resume operation at the set flow rate. By operating according to the above process, the liquid level can be guaranteed to be at the desired position, with a maximum deviation range of no more than 0.5 mm. The impact on the performance of diffuser tube 1 is negligible, ensuring the absorption efficiency of gas samples and the separation efficiency of aerosol samples.

[0028] In summary, this invention is an improvement on existing diffusion tubes, therefore the existing structure of the diffusion tube is not described.

[0029] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing 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 invention should be included within the protection scope of the present invention.

Claims

1. A diffusion tube liquid level maintaining method, characterized by: A diffusion tube liquid level maintaining device is used to maintain the liquid level, which comprises a diffusion tube (1), a support (2), a liquid level detection unit, a liquid supplementing micro pulse pump and a sampling micro pulse pump, characterized in that the outer side of the diffusion tube (1) is provided with the support (2), the liquid level detection unit comprises a liquid level sensor (3), a liquid level sensor upper support (4), a liquid level sensor upper support (5), a liquid level sensor lower support (6), a liquid level sensor upper support locking bolt (7) and a liquid level sensor upper support locking bolt (8), and the diffusion tube (1) and the liquid level detection unit are both installed on the support (2); The rear side of the liquid level sensor (3) is provided with the liquid level sensor upper support (4), the outer side of the liquid level sensor upper support (4) is provided with the liquid level sensor upper support (5), the liquid level sensor upper support (5) and the liquid level sensor upper support (4) are provided with the liquid level sensor upper support locking bolt (8), the outer side of the liquid level sensor upper support (5) is provided with the liquid level sensor lower support (6), and the liquid level sensor lower support (6) and the liquid level sensor upper support (5) are provided with the liquid level sensor upper support locking bolt (7); Each side of the liquid level sensor lower support (6) has an arc-shaped hole with an arc consistent with the inner tube and outer tube of the diffusion tube (1), and the liquid level sensor upper support (5) slides in the arc-shaped hole with an angle of 75-80 degrees; The liquid level sensor upper support (5) is movably connected with the liquid level sensor upper support locking bolt (7), each side of the front end of the liquid level sensor upper support (5) has an oblong hole, and the liquid level sensor upper support (4) is movably connected with the liquid level sensor upper support (5) through the liquid level sensor upper support locking bolt (8) and the oblong hole; The diffusion tube liquid level maintaining method comprises: (1) The absorbing liquid is manually injected into the diffusion tube (1) so that the liquid surface height reaches the desired position, and then the mechanism part of the liquid level detection unit is adjusted so that the liquid level sensor (3) can detect the liquid surface position, at this time the test program of the liquid level sensor (3) is started, the test rule is that after 1 milliliter of absorbing liquid is pumped away by the sampling micro pulse pump, the liquid level detection unit can detect that the liquid surface height is insufficient, then the sampling is stopped and the liquid supplementing is started, after 3-5 seconds of liquid supplementing, the liquid level detection unit can detect the liquid surface position, if the current position cannot meet the current rule, the position of the liquid level sensor (3) is adjusted and tested again until it is completed; (2) When the equipment is sampling, the liquid supplementing micro pulse pump and the sampling micro pulse pump work at the set flow rate, when the liquid level detection unit detects that the liquid surface height is insufficient, the liquid supplementing micro pulse pump quickly supplements the liquid, and when the liquid level detection unit detects the liquid level, the liquid supplementing micro pulse pump returns to the set flow rate.

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