Multi-medium liquid liquid level real-time monitoring sensor and device using the same

Abstract

The application discloses a multi-medium liquid liquid level real-time monitoring sensor and a device adopting the same. The sensor comprises an interface cleaning device, a mounting seat and at least one probe. The interface cleaning device and one end of the probe are mounted on the mounting seat. The interface cleaning device comprises a rotating device, a rotating shaft arranged on the output end of the rotating device and a cleaning piece arranged on the rotating shaft. The cleaning piece is in intermittent contact and friction with the outer wall of the probe in the rotating state. The cleaning piece can prevent floating oil from blocking the probe and affecting the monitoring effect. Through the contact and rotating cooperation of the cleaning piece and the probe, the surface of the probe is scraped in the rotating process, the small solid residues adhered to the probe are removed, the probe surface is prevented from adhering to impurities, the detection precision of the probe is ensured, and the equipment detection accuracy is ensured.

Description

[0001] Multi-media liquid level real-time monitoring sensor and device using the sensor Technical Field

[0002] This invention relates to the field of detection instrument technology, and in particular to a multi-media liquid level real-time monitoring sensor and a device using the sensor. Background Technology

[0003] Kitchen waste refers to waste generated in daily life, food processing, catering services, and institutional catering. It includes discarded vegetable leaves, leftover food, fruit peels, eggshells, tea dregs, bones, etc., primarily originating from household kitchens, restaurants, hotels, canteens, markets, and other food-related industries. Kitchen waste contains extremely high levels of moisture and organic matter, making it highly perishable and producing a foul odor. Its high organic matter content allows it to be used as fertilizer or animal feed after strict processing. It can also produce biogas for fuel or power generation, and the oil components can be used to produce biofuels.

[0004] After solid-liquid separation, the oil-water mixture in the kitchen waste enters the oil-water separator for separation. When the oil layer reaches a certain thickness, it needs to be pumped out, and when the water layer reaches a certain depth, it needs to be drained. The detection of the thickness of water and oil is particularly important. If the detection is inaccurate, water will be discharged into the oil collection tank as oil, or oil will be discharged with the water. In the existing detection technology, the liquid level contact point is easily contaminated and is easily adhered by foam, floating oil, and small solid residues, which affects the detection accuracy. When the liquid surface changes between oil and water, there are detection errors and lags, which cannot accurately measure the true state of the liquid surface medium at the current location in real time, resulting in misjudgment. For example, the applicant disclosed a novel oil drainage device in its invention patent with authorization announcement number CN116573719B. This device employs an oil layer monitoring system comprising a probe, a vibration module, and a connecting tube. The connecting tube is fixedly installed inside the working chamber, the vibration module is located at the top of the connecting tube, one end of the probe is positioned on the liquid surface inside the working chamber, and the other end of the probe passes through the connecting tube and is fixedly connected to the vibration module, which is an ultrasonic vibrator. However, in actual operation, it was found that the ultrasonic vibration effect was unsatisfactory and could not truly solve the problem of oil-water mixtures adhering to the probe, resulting in the inability to accurately measure the liquid medium in real time. Therefore, improvements are urgently needed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a multi-media liquid surface real-time monitoring sensor and a device using the sensor.

[0006] To address the aforementioned technical problems, this invention provides a multi-media liquid level real-time monitoring sensor, comprising an interface cleaning device, a mounting base, and at least one probe. The interface cleaning device and one end of the probe are both mounted on the mounting base. The interface cleaning device includes a rotating device, a rotating shaft disposed on the output end of the rotating device, and a cleaning component disposed on the rotating shaft. The cleaning component intermittently contacts and rubs against the outer wall of the probe during rotation.

[0007] In a further embodiment, the cleaning component includes a shaft and a raised surface extending along the outer wall of the shaft, the raised surface being used for intermittent contact and friction cleaning with the outer wall of the probe.

[0008] In a further embodiment, the protruding surface is disposed in the circumferential direction of the shaft, and the protruding surface is a first arc-shaped surface extending along the outer wall of the shaft.

[0009] In a further embodiment, the shaft body is provided with the protruding surface at at least two ends, and the protruding surface is a first arc-shaped surface extending along the outer wall of the shaft body.

[0010] In a further embodiment, the shaft body is provided with the protruding surface at at least two ends, and the protruding surface includes a first arcuate surface and a second arcuate surface that extend symmetrically along the outer wall of the shaft body.

[0011] In a further embodiment, the shaft body is provided with a plurality of protruding surfaces, the protruding surfaces being first arc-shaped surfaces that extend clockwise or counterclockwise stepwise along the outer wall of the shaft body.

[0012] In a further embodiment, the probes are electrodes, and there are no fewer than three of them, arranged at equal angles around the cleaning component, with the cleaning component simultaneously contacting any two of the probes during rotation.

[0013] This application also includes a device employing the multi-media liquid level real-time monitoring sensor described in any of the above-mentioned schemes, further comprising a chamber and an oil-passing mechanism and a constant-temperature heating rod disposed within the chamber. The constant-temperature heating rod is used to heat the liquid within the chamber. The multi-media liquid level real-time monitoring sensor is disposed within the chamber, with one end of the probe disposed on the liquid surface within the chamber. The probe is electrically connected to a positive electrode, and the outer shell of the chamber is electrically connected to a negative electrode. The liquid type is determined based on the resistance value between the probe and the chamber.

[0014] In a further embodiment, the silo body has a feed inlet and a water inlet, and the oil-passing mechanism includes a rotating oil trough, wherein the rotation angle of the rotating oil trough is adjusted to control the oil discharge speed and the thickness of the oil layer.

[0015] In a further embodiment, the tank has an interconnected liquid buffer chamber and a working chamber, the working chamber including an oil collection chamber and a drainage chamber, the lower sections of the oil collection chamber and the drainage chamber being connected; the liquid on the inner surface of the liquid buffer chamber flows into the oil collection chamber; the multi-media liquid level real-time monitoring sensor installed in the oil collection chamber is used to detect the oil layer height, and the multi-media liquid level real-time monitoring sensor installed in the drainage chamber is used to detect the water level height.

[0016] Implementing this invention has the following beneficial effects:

[0017] The cleaning component prevents floating oil from clogging the probe and affecting the monitoring effect. Through the contact and rotation between the cleaning component and the probe, the cleaning component scrapes the surface of the probe during the rotation process, causing the tiny solid residues adhering to the probe to fall off, preventing impurities from adhering to the probe surface, ensuring the probe detection accuracy, and ensuring the accuracy of equipment detection.

[0018] When the probe is connected to the positive electrode and the outer shell of the tank is connected to the negative electrode, a conductive path will be formed between the two electrodes, forming an electrical circuit and generating a conductive circuit signal. The resistance value of the positive and negative electrodes can be used to determine whether it is water or oil, thus achieving real-time detection of liquid level and oil layer thickness.

[0019] This device is reasonably designed, has a simple structure, and is cost-controllable. It separates the oil from the oil-water mixture for reuse, reducing waste and pollution. The separated water can be directly discharged into the sewer pipe, reducing the blockage of the pipe by grease components, while also reducing pollution and the difficulty of wastewater treatment, meeting the requirements of energy conservation and environmental protection.

[0020] By setting up a reversible oil-passing mechanism, the height of the oil layer can be controlled. Compared with existing technologies such as oil scraping and gravity flow, the height of the oil layer and the oil discharge speed can be controlled in a simpler structure, while saving the manufacturing cost of the equipment. The central control module adjusts the rotation angle of the rotating oil groove of the oil-passing mechanism according to the monitoring data of the probe to control the oil discharge speed and the thickness of the oil layer. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the multi-media liquid surface real-time monitoring sensor structure according to Embodiment 1 of the present invention;

[0022] Figure 2 This is an exploded view of the multi-media liquid surface real-time monitoring sensor of Embodiment 1 of the present invention;

[0023] Figure 3 This is a schematic diagram of the cleaning component structure according to Embodiment 1 of the present invention;

[0024] Figure 4 This is a schematic diagram of the initial state of the cleaning component of the multi-media liquid level real-time monitoring sensor according to Embodiment 1 of the present invention;

[0025] Figure 5 This is a schematic diagram of the cleaning component of the multi-media liquid level real-time monitoring sensor of the present invention when rotated to 60° in Embodiment 1 of the present invention.

[0026] Figure 6 This is a schematic diagram of the cleaning component of the multi-media liquid level real-time monitoring sensor of the present invention when rotated to 120°;

[0027] Figure 7 This is a schematic diagram of the overall structure of the device according to Embodiment 1 of the present invention. Figure 1 ;

[0028] Figure 8 This is a schematic diagram of the overall structure of the device according to Embodiment 1 of the present invention. Figure 2 ;

[0029] Figure 9 This is a schematic diagram of the internal structure of the device according to Embodiment 1 of the present invention;

[0030] Figure 10 This is a schematic diagram of the protruding surface structure of Embodiment 2 of the present invention;

[0031] Figure 11 This is a schematic diagram of the protruding surface structure of Embodiment 3 of the present invention;

[0032] Figure 12 This is a schematic diagram of the protruding surface structure of Embodiment 4 of the present invention;

[0033] In the picture:

[0034] 1. Tank body; 11. Feed inlet; 12. Water inlet; 13. Liquid buffer chamber; 14. Working chamber; 141. Oil collection chamber; 142. Drainage chamber; 15. Constant temperature heating rod; 16. Electric ball valve; 17. Overflow port; 18. One-way valve; 19. Air flotation device; 2. Multi-media liquid level real-time monitoring sensor; 21. Rotating device; 211. Rotating shaft; 22. Cleaning component; 221. Shaft body; 222. First arc surface; 223. Second arc surface; 23. Probe; 24. Mounting plate; 25. Mounting base; 26. Conductive plate; 3. Oil passage mechanism; 31. Rotating oil tank. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] Example 1:

[0037] like Figure 1-6As shown, a multi-media liquid level real-time monitoring sensor 2 includes an interface cleaning device, a mounting base 25, and at least one probe 23. Both the interface cleaning device and one end of the probe 23 are mounted on the mounting base 25. The interface cleaning device includes a rotating device 21, a rotating shaft 211 disposed on the output end of the rotating device 21, and a cleaning component 22 disposed on the rotating shaft 211. The rotating device 21 is a drive motor. The cleaning component 22 intermittently contacts and rubs against the outer wall of the probe 23 during rotation. It also includes a mounting plate 24. The mounting base 25 is fixedly mounted on the rotating device 21 via the mounting plate 24. A conductive plate 26 is disposed between the mounting plate 24 and the mounting base 25. The other end of the probe 23 is disposed within the mounting base 25 and electrically connected to the conductive plate 26. The rotating shaft 211 and the probe 23 pass through the mounting base 25. The cleaning component 22 includes a shaft body 221 and a protruding surface extending along the outer wall of the shaft body 221. The protruding surface is arc-shaped and used for intermittent contact and rubbing against the outer wall of the probe 23. The shaft 221 has raised surfaces at least at both ends. Preferably, the shaft 221 has raised surfaces at both ends, or it has raised surfaces at both ends and in the middle. The raised surfaces are first arc-shaped surfaces 222 extending along the outer wall of the shaft 221. There are three probes 23, arranged at equal angles around the cleaning component 22. During rotation, the cleaning component 22 simultaneously contacts any two of the probes 23. Figure 4 As shown, when the cleaning component 22 is in its initial state, the raised surface is in partial contact with the lower and right side surfaces of the two probes 23; as Figure 5 As shown, when the cleaning component 22 rotates to approximately 60°, the raised surface contacts the partial surfaces of the upper and lower probes 23; as Figure 6 As shown, when the cleaning component 22 rotates to about 120°, the raised surface contacts the partial surfaces of the two probes 23 on the upper and right sides. The cleaning component 22 can prevent floating oil from clogging the probes 23 and affecting the monitoring effect. Through the contact and rotation of the cleaning component 22 and the probes 23, the cleaning component 22 scrapes the surface of the probes 23 during the rotation. At the same time, since there is a broken wall between the outermost part of the raised surface and the shaft 221, when the raised surface separates from the probes 23, it will push the probes 23. When it pushes, it will cause the probes 23 to vibrate, causing the tiny solid residues adhering to the probes 23 to fall off, preventing impurities from adhering to the surface of the probes 23, ensuring the detection accuracy of the probes 23, and ensuring the accuracy of the device detection.

[0038] like Figure 7-9As shown, an apparatus employs the aforementioned multi-media liquid level real-time monitoring sensor 2, and further includes a chamber 1, an oil-passing mechanism 3 disposed within the chamber 1, a constant-temperature heating rod 15, an electric ball valve 16, an overflow port 17, a one-way valve 18, and an air flotation device 19. The constant-temperature heating rod 15 is used to heat the liquid within the chamber 1, thereby heating the oil layer. During normal operation, the constant-temperature heating rod 15 ensures the fluidity of the floating oil. Furthermore, when the apparatus is used in a low-temperature environment, the constant-temperature heating rod 15 prevents the floating oil from solidifying, which would affect the fluidity of the oil layer and reduce the oil discharge rate. The electric ball valve 16 controls drainage, the overflow port 17 allows water to overflow from the drainage chamber 142, the one-way valve 18 allows liquid from the working chamber 14 to return to the liquid buffer chamber 13, and the air flotation device 19 provides oxygen to improve processing efficiency. A multi-media liquid level real-time monitoring sensor 2 is installed inside the chamber 1, with one end of a probe 23 positioned on the liquid surface within the chamber 1. The probe 23 is electrically connected to the positive electrode, and the outer shell of the chamber 1 is electrically connected to the negative electrode. The liquid type is determined based on the resistance value between the probe 23 and the chamber 1. When the probe 23 plate is connected to the positive electrode and the outer shell of the chamber 1 is connected to the negative electrode, a conductive path is formed between the two probes 23, creating an electrical circuit and generating a conductive circuit signal. The resistance value between the positive and negative electrodes is used to determine whether it is water or oil, thus achieving real-time detection of liquid level and oil layer height.

[0039] The tank body 1 has a feed inlet 11 and a water inlet 12. The oil-passing mechanism 3 includes a rotating oil trough 31. Adjusting the rotation angle of the rotating oil trough 31 controls the oil discharge speed and the thickness of the oil layer. The signal output terminal of the probe 23 is electrically connected to the signal input terminal of the central control module, so that the probe 23 transmits monitoring data to the central control module for calculation. The central control module adjusts the rotation angle of the rotating oil trough 31 of the oil-passing mechanism 3 according to the monitoring data of the probe 23 to control the oil discharge speed and the thickness of the oil layer. The central control module in this embodiment is based on existing known technology and will not be described further here. By setting a flip-out oil-passing mechanism 3, the height of the oil layer can be controlled. Compared with the existing oil scraping and gravity flow methods, the height of the oil layer and the oil discharge speed can be controlled with a simpler structure, while saving the manufacturing cost of the equipment.

[0040] The container 1 has an interconnected liquid buffer chamber 13 and a working chamber 14. The working chamber 14 includes an oil collection chamber 141 and a drainage chamber 142. The lower sections of the oil collection chamber 141 and the drainage chamber 142 are connected. The liquid on the surface of the liquid buffer chamber 13 flows into the oil collection chamber 141. A multi-media liquid level real-time monitoring sensor 2 installed in the oil collection chamber 141 is used to detect the oil layer height, and a multi-media liquid level real-time monitoring sensor 2 installed in the drainage chamber 142 is used to detect the water level height. Since oil and water are immiscible and oil has a lower density than water, when the oil-water mixture flows into the oil collection chamber 141, the floating oil forms an oil discharge layer in the upper section of the oil collection chamber 141, while the water flows into the drainage chamber 142 and is discharged outward. During operation, the mixed liquid flows into the liquid buffer chamber 13, and the surface liquid in the liquid buffer chamber 13 flows into the oil collecting chamber 141. Under normal operating conditions, the liquid level in the liquid buffer chamber 13 is higher than the liquid level in the oil collecting chamber 141, achieving automatic oil collection. Oil is discharged only when the oil layer in the oil collecting chamber 141 accumulates to a certain thickness, preventing water from overflowing into the rotating oil tank 31. This device is rationally designed, simple in structure, and cost-effective. It separates the oil from the oil-water mixture for reuse, reducing waste and pollution. The separated water can be directly discharged into the sewer pipe, reducing clogging of the pipes by grease components, while also reducing pollution and the difficulty of wastewater treatment, meeting the requirements of energy conservation and environmental protection.

[0041] Example 2:

[0042] like Figure 10 As shown, the other structures of this embodiment are the same as those of Embodiment 1, except that the shaft 221 has a protruding surface at any position in the circumferential direction. The protruding surface is a first arc-shaped surface 222 formed by extending along the outer wall of the shaft 221.

[0043] Example 3:

[0044] like Figure 11 As shown, the other structures of this embodiment are the same as those in Embodiment 1, except that the shaft 221 has protruding surfaces at at least two ends. Preferably, the shaft 221 has protruding surfaces at both ends, or the shaft 221 has protruding surfaces at both ends and in the middle. The protruding surfaces include a first arcuate surface 222 and a second arcuate surface 223 that extend symmetrically along the outer wall of the shaft 221.

[0045] Example 4:

[0046] like Figure 12As shown, the other structures of this embodiment are the same as those of Embodiment 1, except that the shaft 221 is provided with a number of protruding surfaces. The protruding surfaces are first arc-shaped surfaces 222 formed by extending clockwise or counterclockwise stepwise along the outer wall of the shaft 221. The height and circumference of the shaft 221 are divided into n equal parts. n identical first arc-shaped surfaces 222 are formed in a clockwise or counterclockwise sequence along the outer wall of the shaft 221. The ends of two adjacent first arc-shaped surfaces 222 are connected in the radial direction, that is, they are arranged sequentially along the outer wall of the shaft 221, and the protruding surfaces are arranged in a staggered manner on the circumference.

[0047] The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A multi-medium liquid level real-time monitoring sensor, characterized in that, The interface cleaning device, the mounting seat (25) and at least one probe (23) are mounted on the mounting seat (25), the interface cleaning device includes rotating device (21), rotating shaft (211) arranged on the output end of the rotating device (21) and cleaning part (22) arranged on the rotating shaft (211), the cleaning part (22) includes shaft body (221) and convex surface formed along the outer wall of the shaft body (221), the cleaning part (22) is scraped during rotation, the outermost part of the convex surface and the shaft body (221) have a break wall, when the convex surface is separated from the probe (23), the probe (23) is pushed to make the probe (23) vibrate, thereby cleaning the outer wall of the probe (23) intermittently.

2. A multi-medium liquid level real-time monitoring sensor according to claim 1, wherein, The convex surface is arranged in the circumferential direction of the shaft body (221), and the convex surface is a first arc surface (222) formed along the outer wall of the shaft body (221).

3. The multi-medium liquid level real-time monitoring sensor according to claim 1, wherein, The shaft body (221) is provided with the convex surface at least at two ends, and the convex surface is a first arc surface (222) formed along the outer wall of the shaft body (221).

4. The multi-media liquid level real-time monitoring sensor according to claim 1, wherein, The shaft body (221) is provided with the convex surface at least at two ends, and the convex surface includes a first arc surface (222) and a second arc surface (223) symmetrically formed along the outer wall of the shaft body (221).

5. The multi-media liquid level real-time monitoring sensor according to claim 1, wherein, The shaft body (221) is provided with a plurality of convex surfaces, and the convex surfaces are first arc surfaces (222) formed along the outer wall of the shaft body (221) in clockwise or counterclockwise steps.

6. The multi-media liquid level real-time monitoring sensor according to claim 1, wherein, The probe (23) is an electrode, and the number of the electrodes is not less than 3, and the electrodes are arranged at equal angles around the cleaning part (22), and the cleaning part (22) is in contact with any two of the probes (23) during rotation.

7. An oil drain device characterized by comprising: The multi-medium liquid level real-time monitoring sensor (2) according to any one of claims 1-6 further comprises a bin body (1) and an oil passing mechanism (3) and a constant temperature heating rod (15) arranged in the bin body (1), the constant temperature heating rod (15) is used for heating the liquid in the bin body (1), the multi-medium liquid level real-time monitoring sensor (2) is arranged in the bin body (1), one end of the probe (23) is arranged on the liquid surface in the bin body (1); the probe (23) is electrically connected with the positive electrode, the shell of the bin body (1) is electrically connected with the negative electrode, and the type of the liquid is determined according to the resistance value of the probe (23) and the bin body (1).

8. An oil drain device according to claim 7, characterised in that The bin body (1) has a feed inlet (11) and a water inlet (12), and the oil passing mechanism (3) includes a rotating oil groove (31), and the rotation angle of the rotating oil groove (31) is adjusted to control the oil discharge speed and the thickness of the oil layer.

9. An oil drain device according to claim 7, wherein The bin body (1) has a liquid buffer chamber (13) and a working chamber (14) in communication, the working chamber (14) comprises an oil collection chamber (141) and a drainage chamber (142), the lower sections of the oil collection chamber (141) and the drainage chamber (142) are communicated; the liquid in the inner surface layer of the liquid buffer chamber (13) flows to the oil collection chamber (141); the multi-medium liquid level real-time monitoring sensor (2) arranged in the oil collection chamber (141) is used for detecting the oil layer height, and the multi-medium liquid level real-time monitoring sensor (2) arranged in the drainage chamber (142) is used for detecting the water surface height.

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