Sensor self-cleaning device
By employing a static sealing structure and a non-contact transmission sensor self-cleaning device, the problem of short sensor lifespan in high water pressure and corrosive media environments is solved, achieving self-cleaning function and durability. The scraper component is detachable and replaceable.
Patent Information
- Application Number
- CN202422341821.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-09-25
AI Technical Summary
Sensors have a short lifespan in high water pressure and corrosive media environments, and existing cleaning devices are prone to wear and failure, making them unable to operate continuously for extended periods.
The sensor self-cleaning device, which adopts a static sealing structure, uses a non-contact transmission stator coil and rotor rotating component, combined with an isolation sleeve and a scraping component, to drive the permanent magnet to rotate using an alternating magnetic field, thereby cleaning the sensor by the scraping component and avoiding wear and overheating problems of the dynamic sealing structure.
It achieves the self-cleaning function of the sensor, extends its service life, improves the device's water pressure resistance, avoids failure due to wear and heat, and the scraper part can be quickly replaced.
Smart Images
Figure CN223784305U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sensor self-cleaning technology, specifically to a sensor self-cleaning device. Background Technology
[0002] In the field of water quality monitoring, a large number of sensors are needed to monitor various indicators of industrial and domestic water. Some of these sensors require continuous cleaning of their working surfaces to maintain normal operation. This necessitates that the cleaning devices used in conjunction with these sensors also operate continuously for extended periods. Furthermore, many sensors operate in environments involving high water pressure, corrosive media, and the presence of various impurities in the measured medium. These factors can lead to premature sensor failure and cause long-term damage to the device, resulting in a short lifespan. To address these issues, a sensor self-cleaning device employing a static sealing method is proposed. Summary of the Invention
[0003] The purpose of this invention is to provide a sensor self-cleaning device to solve the problems mentioned in the background art.
[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a sensor self-cleaning device, the self-cleaning device is used to clean the sensor, the self-cleaning device includes a detection device and a drive control device, the detection device and the drive control device are arranged in sequence, the drive control device includes a stator coil and a rotor rotating component, the stator coil and the rotor rotating component are non-contact driven, the drive control device also includes an isolation sleeve, the isolation sleeve is located between the stator coil and the rotor rotating component.
[0005] The detection device is mainly used to fix and clean the sensor, while the drive control device is mainly used to provide power, providing alternating current to the stator coil, so that the stator coil generates an alternating magnetic field. The rotor rotating parts move within the magnetic field, cutting the magnetic wire, thus realizing non-contact transmission between the stator coil and the rotor rotating parts. The isolation sleeve adopts a static sealing structure, avoiding the problems of high wear and short service life of dynamic sealing structures after long-term operation. In addition, the static seal can withstand higher water pressure. The isolation sleeve is in direct contact with the liquid being tested and can be cooled by the liquid being tested, avoiding the failure problem caused by heat generation during long-term operation.
[0006] The detection device includes a first outer shell and a cover plate, which are fastened together. The cover plate has an opening, and the first outer shell has a detection cavity with water passage holes on both sides.
[0007] The first housing serves as the mounting base, and the cover plate has an opening that allows the sensor to enter the detection cavity provided in the first housing and fix the sensor in place. Water passage holes on both sides of the detection cavity are used for the liquid to be tested to flow in and out.
[0008] The detection device also includes a scraper component, one end of which contacts the sensor.
[0009] The scraping component is mainly used to clean the sensor to prevent the sensor from failing prematurely due to the presence of corrosive substances or other impurities in the liquid being tested.
[0010] The drive control device includes a second housing, an isolation sleeve, and a control board. The second housing and the isolation sleeve are fastened together. The fixed end of the control board is fastened together with the second housing. The second housing and the first housing are fastened together. An isolation sleeve is provided between the second housing and the first housing. The second housing and the first housing are in sealed contact through the isolation sleeve. The second housing is provided with a drive control cavity. The isolation sleeve is provided with a first boss.
[0011] The second housing serves as the mounting base, while the isolation sleeve is mainly used to achieve sealed contact between the first and second housings. The control board is used to output current to provide power. An isolation sleeve is provided between the second and first housings to separate the drive control cavity and the detection cavity.
[0012] The drive control device also includes a stator coil and a rotor rotating component. The stator coil and the output terminal of the control board are electrically connected. The stator coil and the second housing are fastened together. The stator coil is located outside the isolation sleeve, and the rotor rotating component is located inside the isolation sleeve.
[0013] The stator coil generates a magnetic field through the current conducted by the control board. The stator coil is located outside the isolation sleeve, and the rotor rotating part is located inside the isolation sleeve. The stator coil and the rotor rotating part do not contact each other. The rotor rotating part rotates by cutting the magnetic field lines, which avoids the problem of wear and failure caused by long-term operation of electronic moving parts by directly using motor drive.
[0014] The rotor rotating component includes a permanent magnet, a first multi-stage magnetic element, and a second multi-stage magnetic element. The permanent magnet and the isolation sleeve are rotatably connected. The first multi-stage magnetic element and the permanent magnet are rotatably connected. The second multi-stage magnetic element and the first multi-stage magnetic element are fastened together. The second multi-stage magnetic element and the scraper component are keyed together.
[0015] When the current in the stator coil changes, the magnetic field generated by the current interacts with the permanent magnet, causing the permanent magnet to rotate inside the isolation sleeve. The first multi-stage magnetic element is affected by the permanent magnet and rotates inside the permanent magnet. The first multi-stage magnetic element drives the second multi-stage magnetic element to rotate, and the second multi-stage magnetic element drives the scraper component to rotate. The scraper component is detachable for easy replacement later.
[0016] The first multi-stage magnetic element has a first groove on the side near the first protrusion of the isolation sleeve, the first multi-stage magnetic element has a second protrusion on the side near the second multi-stage magnetic element, and the second multi-stage magnetic element has a second groove on the side near the second protrusion of the first multi-stage magnetic element.
[0017] The first boss and the first groove rotate in a rotatable fit, and the second boss and the second groove are fastened together, thereby enabling the permanent magnet and the first multi-stage magnetic element to rotate, and causing the first multi-stage magnetic element to drive the second multi-stage magnetic element to rotate.
[0018] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This utility model uses a cover plate to fix the sensor, so that the sensor contacts the scraper component. An isolation sleeve is set between the stator coil and the rotor rotating component, so that the stator coil and the rotor rotating component do not contact each other, reducing wear. The isolation sleeve also connects the first and second outer shells using a static sealing method, avoiding the long-term unreliability problem of dynamic sealing structures. The static seal can also withstand higher water pressure and has a longer service life. Moreover, the isolation sleeve is in direct contact with the liquid being measured, avoiding the problem of failure caused by heat from long-term operation of the motor as a power source. The current output by the control board is used to supply the stator coil. The electronic coil generates an alternating magnetic field to drive the permanent magnet to rotate. The first multi-stage magnetic element starts to rotate under the action of the permanent magnet. The first multi-stage magnetic element drives the second multi-stage magnetic element to rotate. The second multi-stage magnetic element drives the scraper component to rotate, realizing non-contact transmission between the rotor and the stator. At the same time, it realizes the self-cleaning function of the sensor. Furthermore, the second multi-stage magnetic element and the scraper component are keyed together, so that the scraper component can be quickly replaced, avoiding the problem of complicated disassembly and assembly of traditional structures. Attached Figure Description
[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the self-cleaning transmission structure of this utility model;
[0022] Figure 3 This is a half-sectional structural schematic diagram of the present invention;
[0023] Figure 4 This is a schematic diagram of the drive transmission structure of this utility model;
[0024] Figure 5 This is a schematic diagram of part of the drive control device of this utility model;
[0025] In the diagram: 1-sensor, 2-detection device, 3-drive control device, 21-first housing, 22-cover plate, 23-scraper component, 31-second housing, 32-isolation sleeve, 33-control board, 34-stator coil, 35-rotor rotating component, 211-detection cavity, 212-water passage hole, 311-drive control cavity, 321-first boss, 351-permanent magnet, 352-first multi-stage magnetic element, 353-second multi-stage magnetic element, 3521-first groove, 3522-second boss, 3531-second groove. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Please see Figures 1 to 5 The present invention provides the following technical solution:
[0028] like Figure 1 As shown, a sensor self-cleaning device is used to clean sensor 1. The self-cleaning device includes a detection device 2 and a drive control device 3, which are arranged sequentially. The drive control device 3 includes a stator coil 34 and a rotor rotating component 35. The stator coil 34 and the rotor rotating component 35 are driven by non-contact transmission. The drive control device 3 also includes an isolation sleeve 32, which is located between the stator coil 34 and the rotor rotating component 35.
[0029] The detection device 2 is mainly used to fix and clean the sensor 1, and the drive control device 3 is mainly used to provide power and provide alternating current to the stator coil 34, so that the stator coil 34 generates an alternating magnetic field. The rotor rotating part 35 moves in the magnetic field to cut the magnetic wire, realizing non-contact transmission between the stator coil 34 and the rotor rotating part 35. The isolation sleeve 32 adopts a static sealing structure, which avoids the problem of large wear and short service life of the dynamic sealing structure after long-term operation. In addition, the static seal can withstand higher water pressure. The isolation sleeve 32 is in direct contact with the liquid being tested and can be cooled by the liquid being tested, avoiding the failure problem caused by heat generation during long-term operation.
[0030] like Figures 2-3 As shown, the detection device 2 includes a first outer shell 21 and a cover plate 22. The first outer shell 21 and the cover plate 22 are fastened together. The cover plate 22 has an opening. The first outer shell 21 has a detection cavity 211. Water passage holes 212 are provided on both sides of the detection cavity 211.
[0031] The first housing 21 serves as the mounting base, and the cover plate 22 has an opening, allowing the sensor 1 to enter the detection cavity 211 provided in the first housing 21 and fix the sensor 1. The water passage holes 212 on both sides of the detection cavity 211 are used for the liquid to be tested to flow in and out.
[0032] like Figures 2-3 As shown, the detection device 2 also includes a scraper component 23, one end of which is in contact with the sensor 1.
[0033] The scraper component 23 is mainly used to clean the sensor 1 to prevent the test liquid from containing corrosive substances and other impurities, which could cause the sensor 1 to fail prematurely.
[0034] like Figures 2-3 As shown, the drive control device 3 includes a second housing 31, an isolation sleeve 32, and a control board 33. The second housing 31 and the isolation sleeve 32 are fastened together. The fixed end of the control board 33 is fastened together with the second housing 31. The second housing 31 and the first housing 21 are fastened together. An isolation sleeve 32 is provided between the second housing 31 and the first housing 21. The second housing 31 and the first housing 21 are in sealed contact through the isolation sleeve 32. The second housing 31 is provided with a drive control cavity 311. The isolation sleeve 32 is provided with a first boss 321.
[0035] The second outer shell 31 serves as the mounting base, the isolation sleeve 32 is mainly used to achieve sealed contact between the first outer shell 21 and the second outer shell 31, the control board 33 is used to output current to provide power, and the isolation sleeve 32 is provided between the second outer shell 31 and the first outer shell 21 to separate the drive control cavity 311 and the detection cavity 211.
[0036] like Figures 2-3 As shown, the drive control device 3 also includes a stator coil 34 and a rotor rotating component 35. The stator coil 34 and the output terminal of the control board 33 are electrically connected. The stator coil 34 and the second housing 31 are fastened together. The stator coil 34 is located outside the isolation sleeve 32, and the rotor rotating component 35 is located inside the isolation sleeve 32.
[0037] The stator coil 34 generates a magnetic field through the current conducted by the control board 33. The stator coil 34 is located outside the isolation sleeve 32, and the rotor rotating component 35 is located inside the isolation sleeve 32. The stator coil 34 and the rotor rotating component 35 do not contact each other. The rotor rotating component 35 rotates by cutting the magnetic field lines, which avoids the problem of wear and failure caused by long-term operation of electronic motion components by directly using motor drive.
[0038] like Figures 2-4As shown, the rotor rotating component 35 includes a permanent magnet 351, a first multi-stage magnetic element 352, and a second multi-stage magnetic element 353. The permanent magnet 351 is rotatably connected to the isolation sleeve 32, the first multi-stage magnetic element 352 is rotatably connected to the permanent magnet 351, the second multi-stage magnetic element 353 is fastened to the first multi-stage magnetic element 352, and the second multi-stage magnetic element 353 is keyed to the scraper component 23.
[0039] When the current in the stator coil 34 changes, the permanent magnet 351 interacts with the magnetic field generated by the current, causing the permanent magnet 351 to rotate inside the isolation sleeve 32. The first multi-stage magnetic element 352 is affected by the permanent magnet 351 and rotates inside the permanent magnet 351. The first multi-stage magnetic element 352 drives the second multi-stage magnetic element 353 to rotate. The second multi-stage magnetic element 353 drives the scraper component 23 to rotate. The scraper component 23 is detachable for easy replacement later.
[0040] like Figures 2-5 As shown, the first multi-stage magnetic element 352 has a first groove 3521 on the side near the first protrusion 321 of the isolation sleeve 32, the first multi-stage magnetic element 352 has a second protrusion 3522 on the side near the second multi-stage magnetic element 353, and the second multi-stage magnetic element 353 has a second groove 3531 on the side near the second protrusion 3522 of the first multi-stage magnetic element 352.
[0041] The first boss 321 and the first groove 3521 are rotatably engaged, and the second boss 3522 and the second groove 3531 are tightly engaged, thereby realizing the rotation of the permanent magnet 351 and the first multi-stage magnetic element 352, and causing the first multi-stage magnetic element 352 to drive the second multi-stage magnetic element 353 to rotate.
[0042] The working principle of this utility model is as follows: Sensor 1 is fixed in the detection cavity 211 by cover plate 22, so that sensor 1 and scraper component 23 are in contact. The test liquid enters the detection cavity 211 through water hole 212. The control board 33 is turned on, and the current output by the control board 33 is given to stator coil 34, so that stator coil 34 generates an alternating magnetic field. There is an isolation sleeve 32 between stator coil 34 and rotor rotating component 35, so stator coil 34 and rotor rotating component 35 do not contact each other. The first outer shell 21 and the second outer shell 31 are statically sealed and connected by isolation sleeve 32, and the two shells are relatively stationary. This reduces wear on the device and increases its service life. The isolation sleeve 32 is in direct contact with the liquid being tested, which can cool the heat generated during long-term operation. Under the action of the alternating magnetic field, the permanent magnet 351 starts to rotate. The first multi-stage magnetic element 352 starts to rotate under the action of the permanent magnet 351. The first multi-stage magnetic element 352 drives the second multi-stage magnetic element 353 to start rotating. The second multi-stage magnetic element 353 drives the scraper component 23 to start rotating. The rotating scraper component 23 cleans the sensor 1. Thus, the device achieves the self-cleaning function of the sensor 1.
[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0044] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.
Claims
1. A sensor self-cleaning device, the self-cleaning device being used to clean a sensor (1), characterized in that: The self-cleaning device includes a detection device (2) and a drive control device (3), which are arranged in sequence. The drive control device (3) includes a stator coil (34) and a rotor rotating component (35). The stator coil (34) and the rotor rotating component (35) are driven in a non-contact manner. The drive control device (3) also includes an isolation sleeve (32), which is located between the stator coil (34) and the rotor rotating component (35).
2. The sensor self-cleaning device according to claim 1, characterized in that: The detection device (2) includes a first outer shell (21) and a cover plate (22), the first outer shell (21) and the cover plate (22) are fastened together, the cover plate (22) has an opening, the first outer shell (21) has a detection cavity (211), and water passage holes (212) are provided on both sides of the detection cavity (211).
3. The sensor self-cleaning device according to claim 1, characterized in that: The detection device (2) also includes a scraper component (23), one end of which is in contact with the sensor (1).
4. The sensor self-cleaning device according to claim 1, characterized in that: The drive control device (3) includes a second housing (31), an isolation sleeve (32), and a control board (33). The second housing (31) and the isolation sleeve (32) are fastened together. The fixed end of the control board (33) is fastened together with the second housing (31). The second housing (31) and the first housing (21) are fastened together. An isolation sleeve (32) is provided between the second housing (31) and the first housing (21). The second housing (31) and the first housing (21) are in sealed contact through the isolation sleeve (32). The second housing (31) is provided with a drive control cavity (311). The isolation sleeve (32) is provided with a first boss (321).
5. The sensor self-cleaning device according to claim 1, characterized in that: The drive control device (3) further includes a stator coil (34) and a rotor rotating component (35). The stator coil (34) is electrically connected to the output end of the control board (33). The stator coil (34) is fastened to the second housing (31). The stator coil (34) is located outside the isolation sleeve (32), and the rotor rotating component (35) is located inside the isolation sleeve (32).
6. The sensor self-cleaning device according to claim 5, characterized in that: The rotor rotating component (35) includes a permanent magnet (351), a first multi-stage magnetic element (352), and a second multi-stage magnetic element (353). The permanent magnet (351) and the isolation sleeve (32) are rotatably connected. The first multi-stage magnetic element (352) and the permanent magnet (351) are rotatably connected. The second multi-stage magnetic element (353) and the first multi-stage magnetic element (352) are fastened together. The second multi-stage magnetic element (353) and the scraper component (23) are keyed together.
7. The sensor self-cleaning device according to claim 6, characterized in that: The first multi-stage magnetic element (352) has a first groove (3521) on the side near the first boss (321) of the isolation sleeve (32), the first multi-stage magnetic element (352) has a second boss (3522) on the side near the second multi-stage magnetic element (353), and the second multi-stage magnetic element (353) has a second groove (3531) on the side near the second boss (3522) of the first multi-stage magnetic element (352).