Automatic degassing device with detection control function
By designing an automatic degassing device and using a capillary bubble sensor and a leakage sensor to detect and adjust the negative pressure state in real time, the problem of bubbles affecting detection in the flow injection analyzer is solved, and an efficient and rapid degassing effect is achieved. It is suitable for portable and vehicle-mounted flow injection analyzers.
Patent Information
- Application Number
- CN202422848545.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-21
AI Technical Summary
Existing flow injection analyzers lack online degassing capabilities, which causes bubbles to form from the air dissolved in the reagent solution, affecting the accuracy and stability of the test results. Commonly used degassing methods are time-consuming, costly, and prone to contamination, and are unable to detect and address pipeline abnormalities in a timely manner.
An automatic degassing device was designed, which includes a base plate, an upper flow plate, a middle flow plate, a lower flow plate and a microporous breathable membrane. It is equipped with a capillary bubble sensor and a leakage sensor. The device works in conjunction with the negative pressure generating device through a controller to detect bubbles and leakage in real time and automatically adjust the negative pressure state to achieve efficient degassing.
It achieves efficient and rapid degassing effects, can detect and handle bubbles and leakage problems in real time, is suitable for a variety of instruments, has a simple structure, long service life, is maintenance-free and easy to replace, and is suitable for portable and vehicle-mounted flow injection analyzers.
Smart Images
Figure CN223381146U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of water quality analysis, in particular to an automatic degassing device with detection and control functions. Background Art
[0002] Existing flow injection analyzers on the market generally do not have an online degassing function. During daily use, the reagent solution needs to be degassed offline with corresponding equipment before it can be used and tested. The reason why the reagent solution must be degassed is that the air dissolved in the reagent solution will gradually precipitate in the reaction pipeline and form a bubble peak during the test, which will interfere with the test results and affect the accuracy and stability of the test results.
[0003] Currently, commonly used degassing methods include helium degassing, microporous membrane vacuum filtration, and ultrasonic vacuum degassing. These methods are generally time-consuming, require multiple steps, are costly, and can easily contaminate reagent solutions. In practice, pipeline anomalies, such as air inhalation from the reagent inlet or loose joints, can cause bubble peaks. While these can be addressed with reagent degassing, they can also lead to abnormal color development reactions. Therefore, it is necessary to be able to detect these issues and provide corresponding prompts and action information. Utility Model Content
[0004] The utility model aims to provide an automatic degassing device with high degassing efficiency and detection and control functions.
[0005] The utility model provides an automatic degassing device with a detection and control function, comprising a bottom plate and a degassing module arranged on the bottom plate, the degassing module comprising an upper flow path plate, a middle flow path plate and a lower flow path plate stacked from top to bottom, the flow channel of the upper flow path plate is connected to the flow channel of the middle flow path plate, the flow channel of the lower flow path plate is connected to the flow channel of the middle flow path plate, a microporous breathable membrane is arranged between the upper flow path plate and the middle flow path plate, a microporous breathable membrane is arranged between the middle flow path plate and the lower flow path plate, at least four capillary bubble sensors are also arranged on the bottom plate, the inlet and outlet on the left side of the middle flow path plate are connected to the inlet capillary, the inlet capillary passes through a capillary bubble sensor on the bottom plate; the inlet and outlet on the right side of the middle flow path plate are connected to the outlet capillary, the outlet capillary passes through a capillary bubble sensor on the bottom plate, The inlet and outlet on the side of the flow path plate are connected to the first negative pressure and waste liquid connecting pipe, which passes through a capillary bubble sensor on the bottom plate. The inlet and outlet on the side of the lower flow path plate are connected to the second negative pressure and waste liquid connecting pipe, which passes through a capillary bubble sensor on the bottom plate. The first negative pressure and waste liquid connecting pipe and the second negative pressure and waste liquid connecting pipe are respectively connected to a negative pressure generating device for generating negative pressure. The capillary bubble sensors on the bottom plate are respectively connected to the controller, and the controller is connected to the negative pressure generating device. The capillary bubble sensors are used to respectively detect the bubble conditions of the outlet capillary, the inlet capillary, the first negative pressure and waste liquid connecting pipe, and the second negative pressure and waste liquid connecting pipe. The controller starts or shuts down the negative pressure generating device according to the detection signal.
[0006] The utility model provides an automatic degassing device with detection and control functions, wherein a liquid leakage sensor is also provided on the bottom plate for detecting whether the outlet capillary, the inlet capillary, the first negative pressure and waste liquid connecting pipe, the second negative pressure and waste liquid connecting pipe and the degassing module are leaking.
[0007] The utility model provides an automatic degassing device with detection and control functions, wherein four capillary bubble sensors are provided on the bottom plate, the four capillary bubble sensors are arranged in a row, and the degassing module is detachably mounted on the bottom plate.
[0008] The automatic degassing device with detection and control functions of the utility model has the following advantages: it can detect the bubble situation in the liquid inlet end, the bubble situation in the liquid outlet end and the waste liquid discharge situation, and can judge whether the liquid inlet is normal, whether the microporous breathable membrane needs to be replaced and whether the external negative pressure generating device is started based on the return detection signal; it is suitable for a variety of instruments, has a simple structure, a long service life, is maintenance-free, is easy to replace and has a good degassing effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1A three-dimensional diagram of the structure of the automatic degassing device with detection and control functions of the present invention;
[0010] Figure 2 This is a right view of the structural schematic diagram of the automatic degassing device with detection and control functions of the present invention;
[0011] Figure 3 This is a left view of the structural schematic diagram of the automatic degassing device with detection and control functions of the present invention. DETAILED DESCRIPTION
[0012] like Figure 1 、 Figure 2 、 Figure 3 As shown, the automatic degassing device with detection and control functions of the present invention includes a base plate 1 and a degassing module arranged on the base plate 1, and the degassing module includes an upper flow path plate 21, a middle flow path plate 23, and a lower flow path plate 24 stacked from top to bottom. The upper flow path plate 21, the middle flow path plate 23, and the lower flow path plate 24 are all provided with flow channels for liquid flow. An inlet and outlet connected to the flow channel in the upper flow path plate are respectively provided on both sides of the upper flow path plate. Two inlets and outlets connected to the flow channel in the middle flow path plate are respectively provided on both sides of the middle flow path plate. An inlet and outlet connected to the flow channel in the lower flow path plate are respectively provided on both sides of the lower flow path plate. The flow channel of the upper flow path plate is connected to the flow channel of the middle flow path plate, and the flow channel of the lower flow path plate is connected to the flow channel of the middle flow path plate. A microporous breathable membrane 22 is provided between the upper flow path plate and the middle flow path plate, and a microporous breathable membrane 22 is provided between the middle flow path plate and the lower flow path plate. At least four capillary bubble sensors 12 are also provided on the bottom plate. The inlet and outlet 26 on the left side of the middle flow path plate is connected to the inlet capillary, and the inlet capillary passes through a capillary bubble sensor on the bottom plate; the inlet and outlet 26 on the right side of the middle flow path plate is connected to the outlet capillary, and the outlet capillary passes through a capillary bubble sensor on the bottom plate. The inlet and outlet on the side of the upper flow path plate are connected to the first negative pressure and waste liquid connecting pipe, and the first negative pressure and waste liquid connecting pipe are connected. The liquid connecting pipe passes through a capillary bubble sensor on the bottom plate, and the inlet and outlet on the side of the lower flow path plate are connected to the second negative pressure and waste liquid connecting pipe. The second negative pressure and waste liquid connecting pipe passes through a capillary bubble sensor on the bottom plate. The first negative pressure and waste liquid connecting pipe and the second negative pressure and waste liquid connecting pipe are respectively connected to the negative pressure generating device for generating negative pressure. The capillary bubble sensors on the bottom plate are respectively connected to the controller, and the controller is connected to the negative pressure generating device. The capillary bubble sensors are used to respectively detect the bubble conditions of the outlet capillary, the inlet capillary, the first negative pressure and waste liquid connecting pipe, and the second negative pressure and waste liquid connecting pipe. The controller starts or shuts down the negative pressure generating device according to the detection signal.
[0013] The automatic degassing device with detection and control functions of the present invention is further provided with a liquid leakage sensor 13 on the bottom plate, which is used to detect whether the outlet capillary, the inlet capillary, the first negative pressure and waste liquid connecting pipe, the second negative pressure and waste liquid connecting pipe and the degassing module are leaking.
[0014] The liquid leakage sensor 13 is a capacitive liquid leakage sensor. Its capacitor plates are placed on a base plate, and a voltage is applied between the plates, generating an electric field. When liquid drips onto the base plate, the capacitance between the plates changes, thus sensing a liquid leak.
[0015] The utility model provides an automatic degassing device with detection and control functions, wherein four capillary bubble sensors are provided on the bottom plate, the four capillary bubble sensors are arranged in a row, and the degassing module is detachably mounted on the bottom plate.
[0016] The negative pressure generating device can be a micro air pump. The controller can be a computer, a single chip microcomputer or a PLC.
[0017] The utility model discloses an automatic degassing device with detection and control functions, which can be applied to portable, unmanned ship-mounted, vehicle-mounted flow injection analyzers and online water quality analyzers developed based on the flow injection principle.
[0018] The capillary bubble sensor detects the bubble conditions in the liquid inlet and outlet, as well as the waste liquid discharge conditions. Based on the returned detection signals, the controller analyzes whether the liquid inlet is normal, whether there is vacuum absorption, whether the degassing efficiency of the microporous breathable membrane and the negative pressure and waste liquid connecting pipes is normal, whether the microporous breathable membrane needs to be replaced, and whether the external negative pressure generating device should be started, and provides corresponding operation prompt information based on the corresponding judgment results.
[0019] The automatic degassing device with detection and control functions of the utility model has the advantages of strong adaptability, long service life, daily maintenance-free, simple replacement, good degassing effect, and the like.
[0020] The automatic degassing device with detection and control functions of the utility model can work in conjunction with other instruments and workstations, and can also work independently.
[0021] The degassing module can be removed directly from the base plate and replaced.
[0022] Specifically, threaded holes are respectively provided at the four corners of the upper flow path plate 21 , the middle flow path plate 23 , and the lower flow path plate 24 . The degassing module can be detachably mounted on the base plate by means of bolts passing through the threaded holes.
[0023] The microporous breathable membrane is hydrophobic and breathable, which is impermeable to water but permeable to air.
[0024] When there are bubbles in the solution, the bubbles will disperse along with the solution and come into contact with the inner surface of the hydrophobic breathable tube. Due to the selective permeability of the microporous breathable membrane to gas, the dynamic pressure of the solution flow and the negative pressure suction of the externally connected negative pressure generating device, the bubbles pass through the microporous breathable membrane, thereby achieving the degassing effect.
[0025] The utility model discloses an automatic degassing device with detection and control functions, which is portable and can be used in laboratories and is developed based on the flow injection principle.
[0026] The automatic degassing device with detection and control functions of the utility model is particularly suitable for unmanned ship-borne or vehicle-borne flow injection detectors or online water quality detectors.
[0027] The upper flow path plate is installed on the microporous breathable membrane, the middle flow path plate is installed under the microporous breathable membrane, the microporous breathable membrane is placed under the middle flow path plate, and the lower flow path plate is installed under the microporous breathable membrane. The upper flow path plate and the lower flow path plate are connected to the pump pipe to generate negative pressure inside them. Liquid enters the left end of the middle flow path plate and liquid exits the right end.
[0028] The automatic degassing device with detection and control functions of the utility model has the advantages of diverse usage modes, long service life, daily maintenance-free, simple replacement, good degassing effect, and the like.
[0029] The degassing module of this automatic degassing device with detection and control functions is removably fixed to the center of the base plate via magnetic attraction, allowing for easy removal when replacement is needed. Furthermore, all capillaries connected to the degassing module are individually mounted and snapped into the detection positions of the capillary bubble sensor.
[0030] During operation, the controller controls whether to start the external negative pressure device based on the detection information of the capillary bubble sensor to keep the degassing module in a normal pressure or negative pressure state.
[0031] The automatic degassing device with detection and control functions of the utility model can be installed at any position in the reaction flow path where degassing is required.
[0032] The advantages of the automatic degassing device with detection and control functions of the utility model are:
[0033] Negative pressure degassing can be used in the degassing module. Compared with the method of relying on the positive pressure generated by the liquid flow in the pipeline to squeeze out the bubbles from the breathable membrane or breathable tube, the introduction of negative pressure can actively extract the bubbles in the pipeline without relying on the pressure in the pipeline. This can meet the degassing needs of pipelines with different pressure conditions such as positive or negative pressure.
[0034] The degassing module is an integral unit, so it is easy to replace later. You can simply remove the degassing module as a whole after unscrewing the bolts, or directly replace the microporous breathable membrane without any complicated operations.
[0035] The degassing effect can be tested in real time, and the negative pressure state of the degassing device can be adjusted in real time based on the test results. At the same time, the fault judgment can be inferred when abnormal bubbles appear, and corresponding operation prompts can be made to facilitate users to solve the fault problem. Combining the above improvements, a more comprehensive degassing effect can be achieved.
[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.
Claims
1. An automatic degassing device with detection and control functions, characterized in that: The degassing module comprises an upper flow path plate, a middle flow path plate and a lower flow path plate stacked from top to bottom, the flow channel of the upper flow path plate is connected to the flow channel of the middle flow path plate, the flow channel of the lower flow path plate is connected to the flow channel of the middle flow path plate, a microporous breathable membrane is provided between the upper flow path plate and the middle flow path plate, and a microporous breathable membrane is provided between the middle flow path plate and the lower flow path plate. At least four capillary bubble sensors are also provided on the bottom plate, the inlet and outlet on the left side of the middle flow path plate are connected to the inlet capillary, and the inlet capillary passes through a capillary bubble sensor on the bottom plate; the inlet and outlet on the right side of the middle flow path plate are connected to the outlet capillary, and the outlet capillary passes through a capillary bubble sensor on the bottom plate, and the inlet and outlet on the side of the upper flow path plate are connected to the first A negative pressure and waste liquid connecting pipe is connected, the first negative pressure and waste liquid connecting pipe passes through a capillary bubble sensor on the bottom plate, the inlet and outlet on the side of the lower flow path plate are connected to the second negative pressure and waste liquid connecting pipe, the second negative pressure and waste liquid connecting pipe passes through a capillary bubble sensor on the bottom plate, the first negative pressure and waste liquid connecting pipe and the second negative pressure and waste liquid connecting pipe are respectively connected to a negative pressure generating device for generating negative pressure, the capillary bubble sensors on the bottom plate are respectively connected to the controller, the controller is connected to the negative pressure generating device, the capillary bubble sensors are used to respectively detect the bubble conditions of the outlet capillary, the inlet capillary, the first negative pressure and waste liquid connecting pipe, and the second negative pressure and waste liquid connecting pipe, and the controller starts or shuts down the negative pressure generating device according to the detection signal.
2. The automatic degassing device with detection and control function according to claim 1, characterized in that: The bottom plate is also provided with a liquid leakage sensor for detecting whether the outlet capillary, the inlet capillary, the first negative pressure and waste liquid connecting pipe, the second negative pressure and waste liquid connecting pipe and the degassing module are leaking.
3. The automatic degassing device with detection and control function according to claim 2, characterized in that: Four capillary bubble sensors are provided on the bottom plate and arranged in a row. The degassing module is detachably mounted on the bottom plate.