Sample cell online ultrasonic cleaning device integrated at water inlet and cleaning method

Abstract

The invention discloses an online ultrasonic cleaning module for a sample cell, and belongs to the technical field of precise instrument cleaning. The module comprises an ultrasonic generator, an oscillation starting plate, an ultrasonic seat, a water inlet joint, a sealing ring, a sample cell, a potentiometer and an ultrasonic control panel. The ultrasonic generator is integrated at the water inlet of the sample pool through the oscillation starting plate, when liquid flows through the oscillation starting plate, a cavitation effect is generated under the action of ultrasonic waves, a large number of microbubbles are generated and enter the sample pool along with the liquid, and dead-corner-free cleaning is achieved. According to the invention, on-line automatic cleaning without dismounting the sample pool is realized, the cleaning strength can be adjusted through the potentiometer, the problems of damage risk and uneven cleaning caused by manual operation are effectively avoided, and the device has the advantages of good sealing performance, high efficiency and nondestructive cleaning.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of precision instrument cleaning, in particular to a sample cell online ultrasonic cleaning device integrated with a water inlet and a cleaning method. BACKGROUND

[0002] Since the advent of ultrasonic cleaning technology in the mid-20th century, it has been widely used in industrial, medical and laboratory fields due to its ability to use cavitation effect to efficiently and non-destructively remove surface contaminants. In precision optical measurement equipment such as laser particle size analyzers, the cleanliness of the sample cell is crucial and directly affects the light transmittance of the optical path and the accuracy of the measurement data. Therefore, regular and effective cleaning of the sample cell is a key link to ensure long-term stable operation of the instrument.

[0003] Currently, there are mainly three existing technical solutions for cleaning the sample cell of such instruments, but they all have obvious limitations: 1. Ultrasonic cleaning tank: This method is the most traditional and common ultrasonic cleaning method. The sample cell is completely disassembled from the instrument and placed in a separate stainless steel or titanium alloy tank containing cleaning fluid, and the cleaning is performed through a transducer installed at the bottom or side wall of the tank.

[0004] 2. Vibration box type suspension cleaning system: This solution attempts to achieve in-situ cleaning by directly immersing a sealed vibration box containing an ultrasonic vibrator in the liquid to be emptied or filled in the sample cell, usually fixed by a suspension bracket.

[0005] 3. Brush and water jet cleaning: A purely mechanical cleaning solution. After disassembling the sample cell, a brush is manually inserted into the cell for cleaning, supplemented by a liquid jet device to flush the stains removed by the brush.

[0006] In summary, the existing technology must interrupt the measurement process, manually disassemble and install the sample cell each time, increasing the labor intensity and time cost of the operator. Frequent disassembly and installation processes can easily cause the sample cell, especially its optical window, to be scratched, scraped or even damaged. The cleaning effect is uneven, and some areas are not cleaned well. A large amount of cleaning fluid is consumed, and the cleaning fluid needs to be frequently replaced to maintain cleaning effectiveness, increasing the subsequent use cost. SUMMARY

[0007] In view of the problems existing in the prior art measurement method, the present application provides a sample cell online ultrasonic cleaning device integrated with a water inlet and a cleaning method. The specific scheme is as follows: A sample cell online ultrasonic cleaning device integrated with a water inlet, comprising an ultrasonic generator, a vibration plate pressing plate, a vibration plate, an ultrasonic seat, a water inlet joint, a sealing ring, a sample cell, a potentiometer, and an ultrasonic control panel. The sample cell is fixedly connected with the ultrasonic seat through a hexagonal screw; The sealing ring is installed in the groove of the sample cell, used for sealing the connection and further preventing liquid leakage; The vibration plate pressing plate fixes the vibration plate in the groove of the ultrasonic seat; The vibration plate is provided with sealing structures on both sides to prevent liquid leakage; The water inlet joint is welded at the center position of the ultrasonic seat, used for guiding the liquid to flow through the vibration plate; The ultrasonic generator is pasted on the vibration plate; The ultrasonic control panel is connected with the ultrasonic generator through a control line, used for controlling the start and stop of the ultrasonic generator; The potentiometer is connected on the ultrasonic control panel, used for adjusting the vibration amplitude of the ultrasonic generator; The liquid flows into the sample cell after generating cavitation effect through the vibration plate, realizing online cleaning.

[0008] The preferred scheme of the sample cell online ultrasonic cleaning device integrated with the water inlet is that the ultrasonic control panel is powered by a 24V direct current power supply.

[0009] The preferred scheme of the cleaning method of the sample cell online ultrasonic cleaning device integrated with the water inlet is that in step one, the ultrasonic transducer is pasted on the vibration plate and arranged at the fluid inlet channel of the sample cell; the cleaning fluid flows through the action area of the ultrasonic transducer; In step two, the ultrasonic transducer is controlled to work, so that the ultrasonic vibration generated by the ultrasonic transducer acts on the cleaning fluid flowing through, cavitation effect is generated in the fluid; the cleaning fluid carrying cavitation bubbles enters and flows through the sample cell, and the inner wall of the sample cell is cleaned by the rupture of the cavitation bubbles.

[0010] The preferred scheme of the cleaning method of the sample cell online ultrasonic cleaning device integrated with the water inlet is that in step two, the step of controlling the ultrasonic transducer to work includes: An external instruction is received through a control circuit, and the ultrasonic transducer is driven to start or stop; The electric power output to the ultrasonic transducer is changed through the potentiometer, so as to adjust the vibration intensity.

[0011] The working principle of the sample cell online ultrasonic cleaning device integrated with the water inlet is as follows: when liquid flows from the water inlet joint, the liquid flows through the vibration starting plate fixed in the ultrasonic seat; after receiving the signal of the control panel through the ultrasonic generator pasted on the vibration starting plate, high-frequency vibration is generated, the vibration starting plate is driven to vibrate, and cavitation effect is excited in the flowing liquid, a large number of micro-bubbles are generated. These energy-filled bubbles flow into the liquid and fill the entire sample cell, achieving comprehensive cleaning of the inner wall without dead angle and physical contact. The cleaning power can be adjusted by the potentiometer to adapt to different degrees of pollution. The entire process is completed online without disassembling the sample cell, and the sealing structure ensures no leakage. Advantages

[0012] 1. The true sense of online automatic cleaning is realized, the efficiency is greatly improved, and the cost and risk are reduced. The ultrasonic module is directly integrated with the water inlet of the sample cell, and the measurement does not need to be interrupted and any manual disassembly operation is not needed during cleaning. This not only saves a lot of labor cost and time cost, but also completely avoids the risk of scratching, bumping or damaging the sample cell in the frequent disassembly and installation process, ensuring the long-term stability and service life of the instrument.

[0013] The present application utilizes the liquid flowing through the vibration starting plate to generate cavitation effect and generate a large number of bubbles. These bubbles fill the entire sample cell instantaneously, including all the fine flow channels and corners, achieving dead angle-free cleaning. The cleaning method of pure cavitation is non-contact, which has zero physical damage to sensitive surfaces such as optical windows of the sample cell, thereby maintaining the high cleanliness of the optical path and ensuring the accuracy and reliability of the measurement data.

[0014] The ultrasonic generator is directly fixed on the vibration starting plate of the water inlet, and the vibration energy is almost lossless and directly transmitted to the flowing liquid, so that the energy utilization rate is very high, and the cleaning efficiency is higher. The amplitude of the ultrasonic generator can be easily adjusted by the potentiometer, so as to control the number and intensity of cavitation bubbles, which can efficiently remove stubborn stains and also can perform energy-saving and mild cleaning for slight pollution, realizing flexible adjustment of cleaning intensity and wider application scenarios.

[0015] The present application forms multiple leakage prevention safeguards through the vibration starting plate pressing plate, the sealing ring and the sealing structure on both sides of the vibration starting plate, ensuring the long-term sealing reliability of the module under fluid pressure and eliminating the worry of water leakage. The entire module structure is compact, which is installed as a whole component at the water inlet, without the need for large-scale modification of the existing instrument structure, has high integration degree, simple installation and maintenance, and strong practicality. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structural schematic view of a sample cell online ultrasonic cleaning device integrated with the water inlet; Fig. 2It is an integrated sample pool online ultrasonic cleaning device of water inlet.

[0017] 1 ultrasonic generator, 2 vibration plate pressing plate, 3 vibration plate, 4 ultrasonic wave seat, 5 water inlet connector, 6 sealing ring, 7 sample pool, 8 potentiometer, 9 ultrasonic control board. DETAILED DESCRIPTION

[0018] The following will be described with reference to the drawings accompanying the specification Figs. 1-2 The application is further described.

[0019] An integrated sample pool online ultrasonic cleaning device of water inlet, including ultrasonic generator 1, vibration plate pressing plate 2, vibration plate 3, ultrasonic wave seat 4, water inlet connector 5, sealing ring 6, sample pool 7, potentiometer 8, ultrasonic control board 9; The sample pool 7 is fixedly connected with the ultrasonic wave seat 4 through an internal hexagonal screw; The sealing ring 6 is installed in the groove of the sample pool 7, used for sealing the connection and further preventing liquid leakage; The vibration plate pressing plate 2 fixes the vibration plate 3 in the groove of the ultrasonic wave seat 4; The vibration plate 3 is provided with a sealing structure on both sides to prevent liquid leakage; The water inlet connector 5 is welded at the center position of the ultrasonic wave seat 4, used for guiding liquid to flow through the vibration plate 3; The ultrasonic generator 1 is pasted on the vibration plate 3; The ultrasonic control board 9 is connected with the ultrasonic generator 1 through a control line, used for controlling the start and stop of the ultrasonic generator 1; The potentiometer 8 is connected on the ultrasonic control board 9, used for adjusting the vibration amplitude of the ultrasonic generator 1; Liquid flows into the sample pool 7 after cavitation effect is generated by the vibration plate 3, realizing online cleaning.

[0020] The ultrasonic control board 9 is powered by a 24V DC power supply.

[0021] A cleaning method of an integrated sample pool online ultrasonic cleaning device of water inlet, preferably, step one: the ultrasonic transducer 1 is pasted on the vibration plate 3 and arranged at the fluid inlet channel of the sample pool 7; the cleaning fluid flows through the action area of the ultrasonic transducer 1; Step two: control the ultrasonic transducer 1 to work, so that the ultrasonic vibration generated by the ultrasonic transducer 1 acts on the cleaning fluid flowing through, and cavitation effect is generated in the fluid; the cleaning fluid carrying cavitation bubbles enters and flows through the sample pool 7, and the inner wall of the sample pool is cleaned by the rupture of cavitation bubbles.

[0022] In step two, the step of controlling the ultrasonic transducer 1 to work includes: The external command is received by a control circuit 9 to drive the ultrasonic transducer 1 to start or stop; The output power to the ultrasonic transducer 1 is changed by a potentiometer 8 to adjust the vibration intensity.

[0023] The working principle of the integrated inlet sample cell on-line ultrasonic cleaning device is as follows: when liquid flows from the water inlet joint, it flows through the vibration plate fixed in the ultrasonic seat; the ultrasonic generator pasted on the vibration plate generates high-frequency vibration after receiving the signal from the control board, driving the vibration plate to vibrate, thereby exciting cavitation effect in the flowing liquid to generate a large number of micro-bubbles. These energy-filled bubbles flow into the liquid and fill the entire sample cell, achieving comprehensive cleaning of the inner wall without dead angle and physical contact. The cleaning power can be adjusted by the potentiometer to adapt to different degrees of contamination. The entire process is completed on-line without disassembling the sample cell, and the sealing structure ensures no leakage.

Claims

1. An on-line ultrasonic cleaning device integrated with a sample cell at a water inlet, characterized by: It comprises an ultrasonic generator (1), a vibration plate pressing plate (2), a vibration plate (3), an ultrasonic seat (4), a water inlet joint (5), a sealing ring (6), a sample cell (7), a potentiometer (8), an ultrasonic control panel (9). The sample cell (7) is fixedly connected with the ultrasonic seat (4) through an internal hexagonal screw. The sealing ring (6) is installed in the groove of the sample cell (7) and is used for sealing the connection to further prevent liquid leakage. The vibration plate pressing plate (2) fixes the vibration plate (3) in the groove of the ultrasonic seat (4). The vibration plate (3) is provided with a sealing structure on both sides to prevent liquid leakage. The water inlet joint (5) is welded at the center position of the ultrasonic seat (4) and is used for guiding liquid to flow through the vibration plate (3). The ultrasonic generator (1) is pasted on the vibration plate (3). The ultrasonic control panel (9) is connected with the ultrasonic generator (1) through a control line and is used for controlling the start and stop of the ultrasonic generator (1). The potentiometer (8) is connected on the ultrasonic control panel (9) and is used for adjusting the vibration amplitude of the ultrasonic generator (1). Liquid flows into the sample cell (7) after cavitation effect is generated on the vibration plate (3) from the water inlet joint (5), so that online cleaning is realized.

2. The online ultrasonic cleaning device integrated with the sample cell at the water inlet according to claim 1, characterized in that: The ultrasonic control panel (9) is powered by a 24V direct current power supply.

3. The method of claim 1, wherein the method is characterized by: Step one: the ultrasonic transducer (1) is pasted on the vibration plate (3) and is arranged at the fluid inlet channel of the sample cell (7); the cleaning fluid flows through the action area of the ultrasonic transducer (1); Step two: the ultrasonic transducer (1) is controlled to work, so that the ultrasonic vibration generated by the ultrasonic transducer (1) acts on the cleaning fluid flowing through the ultrasonic transducer (1) to generate cavitation effect in the fluid; the cleaning fluid carrying cavitation bubbles enters and flows through the sample cell (7) to clean the inner wall of the sample cell by using the rupture of the cavitation bubbles.

4. The cleaning method of an on-line ultrasonic cleaning device integrated with a sample cell at a water inlet according to claim 3, characterized in that, In step two, the step of controlling the ultrasonic transducer (1) to work comprises: Step one: a control circuit (9) receives an external instruction to drive the ultrasonic transducer (1) to start or stop; Step two: the potentiometer (8) changes the electric power output to the ultrasonic transducer (1) to adjust the vibration intensity of the ultrasonic transducer (1).

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