Self-cleaning detection device and control method

Abstract

The present invention belongs to the technical field of analysis and detection, and discloses a self-cleaning detection device and a control method. The self-cleaning detection device includes a measuring cell, a detector and an ultrasonic generator. The measuring cell has a detection cavity for accommodating a solution to be detected, and the measuring cell has a detection hole and a cleaning hole connected to the detection cavity; the detector is sealed in the detection hole and the electrode of the detector extends into the detection cavity; the ultrasonic generator is sealed in the cleaning hole and can generate high-frequency vibrations into the detection cavity. In this way, the self-cleaning detection device does not need to contact the electrode surface during the cleaning process of the detector, which effectively reduces the possibility of electrode damage, and can also automatically clean the electrode during the detection process without disassembling the electrode, thereby effectively simplifying the operation process, saving time, and no longer needing to set up other cleaning structures to clean the electrode separately, thereby reducing the maintenance cost of the electrode.

Description

Technical Field

[0001] The present invention relates to the technical field of analysis and detection, and in particular to a self-cleaning detection device and a control method. Background Art

[0002] When testing water quality, an electrode conductivity sensor is needed to measure the conductivity of the water, which mainly involves inserting the electrode into the liquid to be tested for testing.

[0003] In the prior art, during the detection process, due to a series of reactions generated in the liquid, contaminants are easily attached to the electrode surface. In order to ensure accurate measurement, the electrode needs to be rinsed with a cleaning brush, sponge or nozzle to ensure that the electrode meets the detection requirements.

[0004] However, the above cleaning methods will directly contact the electrode surface, which can easily scratch the electrode, resulting in poor measurement accuracy. In addition, when cleaning the electrode, it is necessary to remove the electrode from the detection device, which makes the entire process complicated, time-consuming, and increases maintenance costs. Summary of the invention

[0005] The purpose of the present invention is to provide a self-cleaning detection device and a control method, which solves the problem in the prior art that the electrodes of the detection device are easily scratched during cleaning, resulting in poor measurement accuracy, and also solves the problem that the electrodes need to be disassembled during cleaning, which makes the entire process complicated, time-consuming, and increases maintenance costs.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a self-cleaning detection device, comprising:

[0008] A measuring cell, wherein the measuring cell has a detection cavity for accommodating a solution to be detected, and the measuring cell has a detection hole and a cleaning hole communicated with the detection cavity;

[0009] A detector is sealed and disposed in the detection hole and the electrodes of the detector extend into the detection cavity;

[0010] An ultrasonic generator is sealed and arranged in the cleaning hole and can generate high-frequency vibration into the detection cavity.

[0011] Optionally, the distance between the electrode of the detector and the cleaning hole is greater than 0.

[0012] Optionally, the electrode of the detector is at least partially aligned with the cleaning hole.

[0013] Optionally, a sealing ring is provided in the cleaning hole, and the sealing ring is pressed tightly against the ultrasonic generator to close a gap between the ultrasonic generator and the cleaning hole.

[0014] Optionally, a locking piece is provided at one end of the cleaning hole away from the detection cavity, and the locking piece is pressed against the back side of the ultrasonic generator.

[0015] Optionally, the locking member is detachably connected to the cleaning hole.

[0016] Optionally, the locking member is threadedly connected to the cleaning hole.

[0017] Optionally, a clamping platform is provided in the detection hole, a sealing gasket is provided on a side of the clamping platform away from the detection cavity, and the sealing gasket abuts against the main body of the detector;

[0018] And / or, the measuring cell is made of transparent inert material.

[0019] Optionally, the self-cleaning detection device further includes:

[0020] The locking sleeve is sleeved on the main body of the detector and is detachably connected to the measuring cell.

[0021] In a second aspect, the present invention provides a self-cleaning detection device control method, which is applied to the self-cleaning detection device described in any one of the first aspects, and comprises:

[0022] The detection data of the solution to be detected during the detection process is obtained, and when the detection data meets the preset conditions, high-frequency vibration is generated to the solution to be detected in the measuring cell.

[0023] Beneficial effects of the present invention:

[0024] First, by respectively opening a detection hole and a cleaning hole on the measuring pool, the detector is sealed in the detection hole, and the ultrasonic generator is sealed in the cleaning hole. The detector is used to detect the solution to be detected. During the detection process, the ultrasonic generator can generate high-frequency vibrations, and the vibration energy is transmitted to the solution to be detected in the measuring pool, so that the tiny bubbles in the solution to be detected resonate and burst, and at the same time, the bubbles on the electrode surface may gather to form large bubbles, which can fall off the electrode surface. In addition, ultrasound can also cause ultrasonic cavitation of the solution to be detected. The shock wave generated by the rupture of multiple bubbles can cause the dirt attached to the electrode surface to fall off, thereby playing a role in cleaning the electrode surface. During use of the self-cleaning detection device, the detector can detect the flowing solution to be detected, and the ultrasonic generator generates high-frequency vibration and causes the solution to be detected to produce ultrasonic cavitation, which can, on the one hand, cause the tiny bubbles in the solution to be detected to burst, and on the other hand, cause the bubbles on the electrode surface to gather and detach from the electrode. The impact generated by the bubble burst can also be used to have an impact cleaning effect on the dirt on the electrode surface, thereby enabling the detector to self-clean. During the cleaning process, not only is there no need to contact the electrode surface, effectively reducing the possibility of electrode damage, but the electrode can also be automatically cleaned during the detection process without disassembling the electrode, thereby effectively simplifying the operating process, saving time, and no longer requiring other cleaning structures to clean the electrode separately, thereby reducing the maintenance cost of the electrode.

[0025] Secondly, through the control method of the self-cleaning detection device, ultrasound can be used to form high-frequency vibrations in the detection cavity during the water quality detection process to clean the electrode. On the one hand, it can avoid the problem of damaging the electrode due to direct contact with the electrode during the cleaning process, and can also reduce the time spent on disassembling and assembling the electrode, thereby improving the detection efficiency. On the other hand, it can automatically identify whether the electrode needs to be cleaned according to the detection process. After determining that the electrode needs to be cleaned, the ultrasonic generator is automatically started to automatically clean the electrode to remove bubbles or other impurities on the surface of the electrode, so as to ensure the automatic diagnosis and real-time repair of electrode faults during the detection process, thereby effectively improving the detection accuracy of the solution to be detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the cross-sectional structure of the self-cleaning detection device in the present invention.

[0027] In the figure:

[0028] 1. Measuring cell; 11. Detection cavity; 12. Detection hole; 13. Cleaning hole; 14. Liquid injection joint; 15. Diversion port; 2. Detector; 21. Main body; 22. Electrode; 3. Ultrasonic generator; 4. Sealing ring; 5. Locking piece; 6. Sealing pad; 7. Locking sleeve. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0033] The embodiment of the invention discloses a self-cleaning detection device and a control method.

[0034] Reference Figure 1 The self-cleaning detection device comprises a measuring cell 1, a detector 2 and an ultrasonic generator 3. The measuring cell 1 has a detection cavity 11 for accommodating a solution to be detected, and the measuring cell 1 has a detection hole 12 and a cleaning hole 13 connected to the detection cavity 11; the detector 2 is sealed in the detection hole 12 and an electrode 22 of the detector 2 extends into the detection cavity 11; the ultrasonic generator 3 is sealed in the cleaning hole 13 and can generate high-frequency vibration into the detection cavity 11.

[0035] Specifically, the measuring cell 1 is in a cubic shape, and its interior is hollow as a detection chamber 11. Its top wall is provided with a liquid injection joint 14 for injecting the liquid to be tested into the detection chamber 11. A guide port 15 is provided on one side of the measuring cell 1. The guide port 15 can be connected to the flow pipeline so that the solution to be tested can be continuously injected into the measuring cell 1 and then flow into the flow pipeline through the guide port 15. The solution to be tested can flow in the measuring cell 1, thereby avoiding the influence of carbon dioxide in the air on the test.

[0036] A detection hole 12 and a cleaning hole 13 are arranged on the side and bottom wall of the measuring cell 1. In the present embodiment, the detection hole 12 is arranged on the side wall of the measuring cell 1, and the cleaning hole 13 is arranged on the bottom wall of the measuring cell 1. In other embodiments, the positions of the detection hole 12 and the cleaning hole 13 may be interchangeable, or they may be arranged on the side wall or the bottom wall of the measuring cell 1 at the same time.

[0037] The detector 2 includes a main body 21 and an electrode 22 disposed on the main body 21, wherein the electrode 22 can extend through the detection hole 12 into the detection cavity 11 so that the electrode 22 is immersed in the solution to be detected, and the main body 21 can be snapped into the detection hole 12 and form a seal with the detection hole 12 to ensure that the liquid does not leak. The ultrasonic generator 3 is disposed in the cleaning hole 13 and can form a sealed connection with the cleaning hole 13, and the ultrasonic generator 3 can also form a detachable connection with the cleaning hole 13, so as to timely discharge impurities in the measuring cell 1 through the cleaning hole 13.

[0038] By respectively opening a detection hole 12 and a cleaning hole 13 on the measuring cell 1, the detector 2 is sealed in the detection hole 12, and the ultrasonic generator 3 is sealed in the cleaning hole 13. The solution to be detected is detected by the detector 2. During the detection process, the ultrasonic generator 3 can generate high-frequency vibration, and the vibration energy is transmitted to the solution to be detected in the measuring cell 1, so that the tiny bubbles in the solution to be detected resonate and burst, and the bubbles on the surface of the electrode 22 may also gather to form large bubbles, and the large bubbles can fall off the surface of the electrode 22. In addition, ultrasound can also cause ultrasonic cavitation of the solution to be detected, and the shock wave generated by the rupture of multiple bubbles can cause the dirt attached to the surface of the electrode 22 to fall off, thereby playing a role in cleaning the surface of the electrode 22. In this way, during the use of the self-cleaning detection device, the detector 2 can detect the flowing solution to be detected, and the ultrasonic generator 3 generates high-frequency vibration and causes the solution to be detected to produce ultrasonic cavitation, which can, on the one hand, cause the tiny bubbles in the solution to be detected to burst, and on the other hand, cause the bubbles on the surface of the electrode 22 to gather and detach from the electrode 22, and can also use the impact generated by the bubble burst to have an impact cleaning effect on the dirt on the surface of the electrode 22, so that the detector 2 can self-clean. During the cleaning process, not only does it not need to contact the surface of the electrode 22, effectively reducing the possibility of damage to the electrode 22, but it can also enable the electrode 22 to automatically complete the cleaning during the detection process without disassembling the electrode 22, thereby effectively simplifying the operation process, saving time, and no longer needing to set up other cleaning structures to clean the electrode 22 separately, thereby reducing the maintenance cost of the electrode 22.

[0039] Optionally, the distance between the electrode 22 of the detector 2 and the cleaning hole 13 is greater than zero.

[0040] Specifically, the detection hole 12 is opened on the side of the measuring pool 1, and the cleaning hole 13 is opened on the bottom surface of the measuring pool 1. When the electrode 22 of the detector 2 is extended into the detection cavity 11, the electrode 22 is suspended in the detection cavity 11 and maintains a certain distance from the cleaning hole 13. On the one hand, it can ensure that the electrode 22 is in full contact with the flowing solution to be detected. On the other hand, it can also enable the energy of the ultrasonic wave generated by the ultrasonic generator 3 to be first transmitted to the liquid to be measured, and then gradually transmitted to the entire electrode 22, thereby improving the overall cleaning effect of the electrode 22, and it can also ensure that the ultrasonic wave will not damage the electrode 22.

[0041] Optionally, the electrode 22 of the detector 2 is at least partially aligned with the cleaning hole 13 .

[0042] Specifically, the electrode 22 is located above the cleaning hole 13, and in the vertical projection plane, the axis of the electrode 22 intersects with the axis of the cleaning hole 13, and the two may be at an angle of 90°. In this embodiment, the electrode 22 of the detector 2 is located directly above the cleaning hole 13 to ensure that the ultrasonic generator 3 can clean the electrode 22 more efficiently.

[0043] Optionally, a sealing ring 4 is provided in the cleaning hole 13 , and the sealing ring 4 is pressed tightly against the ultrasonic generator 3 to close a gap between the ultrasonic generator 3 and the cleaning hole 13 .

[0044] Specifically, a ring stage is convex in one end of the cleaning hole 13 close to the detection cavity 11, one side of the sealing ring 4 is fixed to the side of the ring stage away from the detection cavity 11, and the other side of the sealing ring 4 can be pressed against the ultrasonic generator 3, so that the sealing ring 4 can be used to achieve the sealing between the ultrasonic generator 3 and the cleaning hole 13. The sealing ring 4 can be made of a rubber ring or other materials that meet the sealing requirements, which is not limited in the present invention.

[0045] Optionally, a locking member 5 is provided at one end of the cleaning hole 13 away from the detection cavity 11 , and the locking member 5 is pressed against the back side of the ultrasonic generator 3 .

[0046] Specifically, a locking member 5 is provided at the opening of the cleaning hole 13, and the locking member 5 can be partially inserted into the cleaning hole 13, and one end of the locking member 5 inserted into the cleaning hole 13 can abut against the back of the ultrasonic generator 3, thereby pushing the front of the ultrasonic generator 3 to abut against the sealing ring 4, so as to fix the ultrasonic generator 3 while ensuring that the sealing of the cleaning hole 13 meets the requirements. The locking member 5 can form a detachable connection with the cleaning hole 13 such as a snap connection or a threaded connection, or a non-detachable connection such as a welding or bonding connection.

[0047] Optionally, the locking member 5 is detachably connected to the cleaning hole 13 .

[0048] Specifically, the locking member 5 can be withdrawn from the cleaning hole 13, so as to facilitate the removal of the ultrasonic generator 3 from the cleaning hole 13, thereby facilitating the opening of the cleaning hole 13, so that the sediment in the measuring cell 1 can be quickly discharged from the cleaning hole 13, and the possibility of interference of the sediment on the detection can be eliminated. The detachable connection can be realized by a snap connection or a threaded connection, which can be specifically designed according to the actual installation space.

[0049] Optionally, the locking member 5 is threadedly connected to the cleaning hole 13 .

[0050] Specifically, the locking member 5 is a locking bolt, and an internal thread can be provided on the inner surface of the cleaning hole 13 . The locking bolt can be screwed into the cleaning hole 13 to further close the cleaning hole 13 , thereby improving the overall sealing of the cleaning hole 13 .

[0051] Optionally, a clamping platform is provided in the detection hole 12 , and a sealing gasket 6 is provided on a side of the clamping platform away from the detection cavity 11 , and the sealing gasket 6 abuts against the main body 21 of the detector 2 .

[0052] Specifically, the clamping platform is annular, and a sealing gasket 6 is fixedly arranged on the side thereof away from the detection cavity 11, and the side of the sealing gasket 6 away from the clamping platform abuts against the main body 21 of the detector 2, thereby being able to seal the gap between the main body 21 of the detector 2 and the detection hole 12, so as to achieve a sealed connection between the detector 2 and the detection hole 12. The material of the sealing gasket 6 can be rubber, or other materials that meet the requirements, and the present invention is not limited to this.

[0053] Optionally, the self-cleaning detection device further comprises a locking sleeve 7. The locking sleeve 7 is sleeved on the main body 21 of the detector 2 and is detachably connected to the measuring cell 1.

[0054] Specifically, a locking sleeve 7 is sleeved on the outer side of the detector 2, the inner end surface of the locking sleeve 7 can abut against the end surface of the shell, and the inner side wall of the locking sleeve 7 can form a detachable connection with the measuring cell 1, such as a snap connection or a threaded connection, so as to press the detector 2 as a whole into the detection hole 12, thereby fixing the detector 2 in the detection hole 12. In this way, when disassembling the detector 2, it is only necessary to remove the locking sleeve 7 to pull out the detector 2, and when installing, it is only necessary to insert the detector 2 into the detection hole 12 and then fix the locking sleeve 7 to complete the installation, so that the disassembly and assembly process of the detector 2 is simple and the operation is convenient.

[0055] Optionally, the measuring cell 1 is made of a transparent inert material.

[0056] Specifically, the measuring cell 1 can be made of glass or plastic, etc., which is transparent to facilitate the working condition of the penetrating electrode 22, and is an inert material and will not affect the solution to be detected.

[0057] The self-cleaning detection device control method is applied to the self-cleaning detection device in the above embodiment, which includes: obtaining detection data of the solution to be detected during the detection process, and when the detection data meets the preset conditions, generating high-frequency vibration to the solution to be detected in the measuring cell 1.

[0058] Specifically, during the detection process of the solution to be detected, the electrode 22 will continue to operate, and the detected detection data will be continuously uploaded to the background control system. The detection data may be the relevant operation data of the electrode 22 of the detector, which may be directly displayed on the screen in the form of a peak graph, and the waveform amplitude change may be monitored in real time. When the operator observes an abnormal peak on the waveform graph or the system prompts that an abnormal peak exists, or when a standard liquid is passed through the electrode 22 in the diagnostic mode, when the signal amplitude fluctuation of the electrode 22 exceeds the threshold range, it indicates that bubbles appear in the solution to be detected in the detection cavity 11. At this time, it can be determined that the detection data meets the preset conditions, and the ultrasonic generator 3 is automatically controlled to start, so that high-frequency vibrations can be generated in the detection cavity.

[0059] Through the control method of the self-cleaning detection device, during the water quality detection process, ultrasound can be used to form high-frequency vibrations in the detection chamber to clean the electrode 22. On the one hand, it can avoid the problem of damage to the electrode due to direct contact with the electrode 22 during the cleaning process, and can also reduce the time spent on disassembling and assembling the electrode 22, thereby improving the detection efficiency. On the other hand, it can automatically identify whether the electrode 22 needs to be cleaned according to the detection process. After determining that the electrode 22 needs to be cleaned, the ultrasonic generator 3 is automatically started to automatically clean the electrode 22 to remove bubbles or other impurities on the surface of the electrode 22, so as to ensure the automatic diagnosis and real-time repair of the electrode 22 fault during the detection process, thereby effectively improving the detection accuracy of the solution to be detected.

[0060] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A self-cleaning detection device, characterized in that: include: A measuring cell (1), wherein the measuring cell (1) has a detection cavity (11) for accommodating a solution to be detected, and the measuring cell (1) has a detection hole (12) and a cleaning hole (13) connected to the detection cavity (11); A detector (2) is sealed and disposed in the detection hole (12), and an electrode (22) of the detector (2) extends into the detection cavity (11); An ultrasonic generator (3) is sealed and disposed in the cleaning hole (13) and is capable of generating high-frequency vibrations in the detection cavity (11).

2. The self-cleaning detection device according to claim 1, characterized in that: The distance between the electrode (22) of the detector (2) and the cleaning hole (13) is greater than 0.

3. The self-cleaning detection device according to claim 1, characterized in that: The electrode (22) of the detector (2) is at least partially aligned with the cleaning hole (13).

4. The self-cleaning detection device according to claim 1, characterized in that: A sealing ring (4) is arranged in the cleaning hole (13), and the sealing ring (4) is tightly pressed against the ultrasonic generator (3) to close the gap between the ultrasonic generator (3) and the cleaning hole (13).

5. The self-cleaning detection device according to claim 1, characterized in that: A locking piece (5) is provided at one end of the cleaning hole (13) away from the detection cavity (11), and the locking piece (5) is pressed against the back side of the ultrasonic generator (3).

6. The self-cleaning detection device according to claim 5, characterized in that: The locking piece (5) is detachably connected to the cleaning hole (13).

7. The self-cleaning detection device according to claim 6, characterized in that: The locking piece (5) is threadedly connected to the cleaning hole (13).

8. The self-cleaning detection device according to any one of claims 1 to 7, characterized in that: The detection hole (12) has a clamping platform in it, and a sealing gasket (6) is provided on a side of the clamping platform away from the detection cavity (11), and the sealing gasket (6) abuts against a main body (21) of the detector (2); And / or, the measuring cell (1) is made of a transparent inert material.

9. The self-cleaning detection device according to any one of claims 1 to 7, characterized in that: The self-cleaning detection device also includes: A locking sleeve (7) is sleeved on the main body (21) of the detector (2) and is detachably connected to the measuring cell (1).

10. A self-cleaning detection device control method, characterized in that: The self-cleaning detection device according to any one of claims 1 to 9 comprises: Detection data of the solution to be detected during the detection process is obtained, and when the detection data meets preset conditions, high-frequency vibration is generated to the solution to be detected in the measuring cell (1).

Images