Pressure pulse type bubble removing device
The electrically controlled pressure pulse degassing device uses pressure pulses generated by a liquid pump and gas compression in the gas chamber to automatically remove tiny bubbles from the colorimetric cell of the liquid chromatography detector, solving the problem of low efficiency in existing technologies and achieving efficient and automated bubble removal.
Patent Information
- Application Number
- CN202520133288.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Tiny air bubbles adhering to the colorimetric cell in a liquid chromatography detector are difficult to remove effectively. Existing methods are inefficient and consume a lot of reagents, and manual operation can easily lead to the re-entry of air bubbles.
The electrically controlled pressure pulse degassing device uses a liquid pump to drive the liquid flow, generates pressure pulses through gas compression in the gas chamber, and uses high-speed pressure liquid to flush the colorimetric cell flow channel, automatically removing bubbles.
It improves the efficiency of bubble removal, reduces manual operation, ensures that bubbles are removed from the inner wall of the colorimetric cell in one go, and simplifies the maintenance process.
Smart Images
Figure CN223716451U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to liquid chromatography detection field, especially a pressure pulse type bubble removing device. BACKGROUND
[0002] Small bubbles are difficult to remove when adhering to the colorimetric cell in the liquid chromatography detector, and two methods of manual removal or liquid flushing are usually adopted. Manual bubble removal is easy to realize, but the bubbles are easy to be brought in when reconnection, and multiple operations are often required to complete the bubble removing purpose. Liquid flushing consumes a large amount of reagent and may not remove the bubbles, and the bubble removing efficiency is extremely low. SUMMARY
[0003] In view of the above problems, the utility model provides a pressure pulse type bubble removing device, which adopts electric control to remove bubbles, improves the bubble removing efficiency, and reduces manual operation.
[0004] The technical scheme adopted by the utility model is as follows:
[0005] A pressure pulse type bubble removing device, comprising a colorimetric cell, a colorimetric flow channel is arranged in the colorimetric cell, one end of the colorimetric flow channel is sequentially connected with an electric control valve, an air chamber and a liquid pushing pump for pushing the liquid in the liquid inlet pipeline to compress the air in the air chamber through a liquid inlet pipeline, an air cavity for filling air is arranged in the air chamber, the air cavity is between the control valve and the liquid pushing pump, and the other end of the colorimetric flow channel is connected with a liquid outlet pipeline.
[0006] Preferably, the liquid outlet pipeline is connected with a waste liquid barrel.
[0007] Preferably, the electric control valve is an electromagnetic valve.
[0008] Preferably, the liquid pushing pump is a plunger pump, a piston pump, a gear pump, a membrane pump, a screw pump or a rotary piston pump.
[0009] Preferably, the air chamber is detachably and sealingly mounted on the liquid inlet pipeline, and the air cavity is located at the upper part of the liquid inlet port of the air chamber.
[0010] More preferably, the air chamber is sealingly mounted on the liquid inlet pipeline in a threaded manner.
[0011] Compared with the prior art, the utility model has the beneficial effects that the utility model provides a pressure pulse type bubble removing device, the liquid is pushed to flow by the liquid pushing pump, the gas in the air chamber is extruded, the pressure is generated, the liquid is instantaneously released after the electric control valve is opened, the liquid flows through the internal passage of the colorimetric cell and is discharged, the small bubbles adhering to the wall of the colorimetric flow channel are taken away under the flushing of the high-speed pressure liquid, manual bubble removal is avoided, and the efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1The utility model provides a kind of pressure pulse type bubble removing device's schematic diagram. DETAILED DESCRIPTION
[0013] According to the preferred embodiment of the utility model provided by the drawing is specifically described.
[0014] Figure 1 , the utility model provides a kind of pressure pulse type bubble removing device's preferred embodiment. As shown in Figure 1 The pressure pulse type bubble removing device includes a cuvette 10, a cuvette flow channel 11 is provided in the cuvette 10, one end of the cuvette flow channel 11 is sequentially communicated with an electric control valve 20, an air chamber 30 and a liquid pushing pump 40 for pushing the liquid in the liquid inlet pipe to compress the air in the air chamber through a liquid inlet pipe 12, an air cavity 31 for filling air is provided in the air chamber 30, the air cavity 31 is between the control valve 20 and the liquid pushing pump 40, and the other end of the cuvette flow channel 11 is communicated with a liquid outlet pipe 13; when in use, the electric control valve 20 is in a power-off state in the initial state, the liquid pushing pump 40 is communicated with the cuvette flow channel 11 in the cuvette 10, when the liquid pushing pump 40 pushes the liquid outward, the gas in the air cavity 31 in the air chamber 30 is compressed, the pressure in the pipeline or cavity between the liquid pushing pump 40 and the electric control valve 20 rises, when the pressure rises to a set pressure value, the liquid pushing pump 40 stops pushing the liquid, the electric control valve 20 is powered on, the pressure liquid at the front end of the electric control valve 20 is released instantaneously, the liquid flows through the cuvette flow channel 11 in the cuvette 10 and is discharged, under the flushing of high-pressure liquid, the tiny bubbles attached to the flow channel wall in the cuvette flow channel 11 are carried away, thereby completing the bubble removing action, avoiding manual bubble removing and improving the efficiency. It is worth noting that the bubbles attached to the inner wall of the cuvette flow channel 11 can be removed at one time in actual use, the above-mentioned action can be controlled by program, and the bubble removing action can be completed by one-key clicking on the user interface, which is convenient for liquid path system maintenance.
[0015] The liquid outlet pipe 13 is communicated with a waste liquid barrel 50, which can receive the liquid discharged from the cuvette flow channel 11.
[0016] The electric control valve 20 is a solenoid valve, which is usually driven by an electromagnetic coil through an electric signal and is suitable for control systems requiring fast response and small flow. The liquid pushing pump 40 is a plunger pump, a piston pump, a gear pump, a membrane pump, a screw pump or a rotary piston pump, and the liquid pushing pump 40 belongs to the type of displacement pump, which can provide constant flow output to compress the gas in the air chamber 30. As a preferred embodiment, the liquid pushing pump 40 is a plunger pump.
[0017] The air chamber 30 is detachably and sealingly installed on the liquid inlet pipe 12, the air cavity 31 is located at the upper part of the liquid inlet of the air chamber, so that the air cavity 31 and the liquid inlet pipe 12 are connected and kept sealing, and the cavity of the air cavity 31 is located at the upper part of the liquid inlet of the air cavity, so that the gas overflow can be avoided. The air chamber 30 can be sealingly installed on the liquid inlet pipe 12 by screw threads or other ways.
[0018] The flushing pressure of the pressure pulse bubble removing device can be realized by two ways. Since the pressure is generated by compressing the gas in the air cavity, one way is to change the liquid pushing amount of the liquid pushing pump 40 to change the flushing pressure, and the other way is to fix the liquid pushing amount of the liquid pushing pump 40, and to change the air cavity volume in the air chamber 30 to realize the requirement of different flushing pressures. The second way can complete the flushing action with less flushing liquid amount, and is more economical. By replacing the air cavity 31 with different volumes, different flushing pressures can be realized with the same liquid pushing amount, which is convenient for the application of the same device in different systems. In addition, a small amount of liquid may be retained in the air cavity 31 after long time use, which affects the bubble removing effect. At this time, the air chamber 30 is removed, the liquid in the air cavity 31 is shaken off, and the air chamber 30 is reinstalled, so that the maintenance is convenient.
[0019] In summary, the technical scheme of the utility model can fully and effectively achieve the above-mentioned utility model purposes, the structure and function principle of the utility model have been fully verified in the embodiments, the expected effects and purposes can be achieved, and various changes or modifications can be made to the embodiments of the utility model without departing from the principles and essence of the utility model. Therefore, the utility model includes all the replacements within the range mentioned in the patent application, any equivalent changes made within the range of the utility model application are within the patent range of the application.
Claims
1. A pressure pulse bubble removal device comprising a cuvette, characterized in that, The colorimetric pool is provided with a colorimetric flow channel, one end of the colorimetric flow channel is sequentially communicated with an electric control valve, an air chamber and a liquid pushing pump for pushing the liquid in the liquid inlet pipeline to compress the air in the air chamber through a liquid inlet pipeline, the air chamber is provided with an air cavity for filling air, the air cavity is between the control valve and the liquid pushing pump, and the other end of the colorimetric flow channel is communicated with a liquid outlet pipeline.
2. The pressure pulse bubble removal device of claim 1, wherein: The liquid outlet pipeline is communicated with a waste liquid barrel.
3. The pressure pulse bubble removal device of claim 1, wherein: The electric control valve is an electromagnetic valve.
4. The pressure pulse bubble removal device of claim 1, wherein: The liquid pushing pump is a plunger pump, a piston pump, a gear pump, a membrane pump, a screw pump or a rotary piston pump.
5. The pressure pulse bubble removal device of claim 1, wherein: The air chamber is detachably and sealingly installed on the liquid inlet pipeline, and the air cavity is located at the upper part of the liquid inlet port of the air chamber.
6. The pressure pulse bubble removal device of claim 5, wherein: The air chamber is sealingly installed on the liquid inlet pipeline in a threaded manner.