Liquid leakage detection and drainage system

Abstract

The utility model discloses a liquid leakage detection and drainage system which comprises a photoelectric liquid level sensor arranged in a closed box body and used for detecting whether liquid leaks into the closed box body or not; the fluid control valve is electrically connected to the photoelectric liquid level sensor, and the fluid control valve is used for controlling opening and closing of the closed box body; the liquid discharging pipe is connected to the closed box body through a fluid control valve, and the liquid discharging pipe is used for discharging liquid leaked into the closed box body out of the closed box body; the diaphragm pump is connected to the liquid discharge pipe, and the diaphragm pump is used for pumping the liquid leaked into the closed box body into the liquid discharge pipe and discharging the liquid out of the liquid discharge pipe; the check valve is connected to the diaphragm pump, and the check valve is used for preventing the liquid discharged out of the liquid discharging pipe from flowing back or flowing backwards.

Description

Technical Field

[0001] The utility model relates to the field of liquid leakage detection and liquid discharge; further, it relates to a liquid leakage detection and liquid discharge system for an isolation box of an extraction section of a lithium battery coating machine. Background Art

[0002] In recent years, lithium batteries have played an increasingly important role in people's lives. They are used in mobile phones, various electronic products, new-powered cars, etc. Lithium batteries are divided into water-based and oil-based. The cycle performance and low-temperature performance of oil-based batteries are much higher than those of water-based batteries. Therefore, the demand for oil-based coating films is also increasing.

[0003] The extraction section of the existing oily coating machine is generally driven by a traditional stainless steel chain. The chain and gears are immersed in the extract. However, the chain will wear out during the long-term transmission process and penetrate into the extract. It may also rust, affecting the quality and purity of the extract, and thus greatly affecting the quality of the membrane. After improvement, a closed box is used to completely isolate the synchronous wheel and synchronous belt of the transmission part from the extract. However, since the oil seals and other parts on the rollers will also wear out with long-term rotation, the extract may still enter the isolation box, which will corrode the belt, and the worn debris of the belt will also enter the extract. In addition, the general extraction section has multiple tanks, and it is impossible to configure a suction pump for each tank, so it is necessary to design an economical anti-leakage solution. Utility Model Content

[0004] In various attempts to overcome the defects of the prior art, the utility model provides a leakage detection and drainage system, which only needs to be configured with a water suction pump, and uses multiple liquid level sensors and fluid control valves to control which water tank among a plurality of water tanks to drain first, so as to achieve the requirements of leakage detection and drainage in the most economical way.

[0005] To achieve the above-mentioned purpose, a technical solution of the utility model is a leakage detection and drainage system for detecting whether liquid enters a closed box and discharging the liquid outside the closed box, and is characterized in that it comprises: a liquid level sensor, arranged in the closed box, wherein the liquid level sensor is used to detect whether the liquid leaks into the closed box; a fluid control valve, electrically connected to the liquid level sensor, wherein the fluid control valve is used to control the opening and closing of the closed box; a drainage pipe, connected to the closed box through the fluid control valve, wherein the drainage pipe is used to discharge the liquid leaked into the closed box outside the closed box; a diaphragm pump, connected to the drainage pipe, wherein the diaphragm pump is used to extract the liquid leaked into the closed box into the drainage pipe and discharge it outside the drainage pipe; and a check valve, connected to the diaphragm pump, wherein the check valve is used to prevent the liquid discharged outside the drainage pipe from flowing back or pouring back.

[0006] The liquid leakage detection and drainage system as described above, further comprises: a bracket, which is arranged in the closed box, wherein the liquid level sensor is arranged on the bracket, and the liquid level sensor can adjust the sensing height and the leakage level through the bracket.

[0007] The leakage detection and drainage system as described above further comprises: a connecting pipe connecting the sealed box and the fluid control valve, wherein the connecting pipe is connected to the sealed box, and the fluid control valve is used to control the opening and closing of the connecting pipe.

[0008] The leakage detection and drainage system as described above further comprises: a quick-screw connector, which is arranged on one side of the fluid control valve, wherein the quick-screw connector is connected to the closed box through the connecting pipe.

[0009] In the above-mentioned liquid leakage detection and drainage system, the fluid control valve is a solenoid valve.

[0010] In the above-mentioned leakage detection and drainage system, the drainage pipe is a stainless steel bellows.

[0011] In the above-mentioned leakage detection and drainage system, the connecting pipe uses a corrosion-resistant Teflon hose.

[0012] The leakage detection and drainage system as described above further comprises: a pipette disposed in the sealed box, wherein one end of the pipette is adjacent to the bottom of the sealed box, and the other end of the pipette is connected to the connecting pipe.

[0013] The leakage detection and drainage system as described above, further comprises: a confluent pipe connected to a plurality of the drainage pipes and the diaphragm pump, wherein the confluent pipe is used to transport the liquid in the plurality of the drainage pipes to the diaphragm pump, a plurality of the liquid level sensors are respectively arranged in a plurality of the sealed boxes, a plurality of fluid control valves are respectively electrically connected to the plurality of the liquid level sensors, and a plurality of the drainage pipes are respectively connected to the plurality of the sealed boxes through a plurality of the fluid control valves.

[0014] The leakage detection and drainage system as described above further comprises: a processor electrically connected to a plurality of the liquid level sensors and a plurality of the fluid control valves, wherein the processor is used to process the sensing signals transmitted by the plurality of the liquid level sensors. When leakage occurs in more than one of the sealed boxes at the same time, the diaphragm pump is given priority to pump the sealed box whose liquid level sensor lights up first, and then pumps the other sealed boxes after completion.

[0015] The technical solution provided by the utility model can achieve several technical effects that cannot be achieved by the existing technologies, and solves the problem that the existing technologies can no longer meet the requirements of only configuring a water suction pump, and controlling which water tank among multiple water tanks to drain first through multiple liquid level sensors and fluid control valves, so as to achieve the requirements of effectively implementing leakage detection and drainage in the most economical way, thereby achieving the requirements of improving the product qualification rate and efficient quality assurance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a configuration diagram of a liquid leakage detection and drainage system provided by the utility model.

[0017] Figure 2 The utility model is a cross-sectional schematic diagram of a part of the liquid leakage detection and drainage system.

[0018] Figure 3 It is a partial configuration diagram of a liquid leakage detection and drainage system provided by the utility model.

[0019] Figure 4 It is a partially enlarged configuration diagram of a liquid leakage detection and drainage system provided by the utility model.

[0020] Figure 5 It is a partial configuration diagram of a liquid leakage detection and drainage system provided by the utility model. DETAILED DESCRIPTION

[0021] The technical solution provided by the utility model is a liquid leakage detection and drainage system 1, which is used to detect whether liquid has entered into a closed box B and discharge the liquid outside the closed box B, and the closed box B is a closed water tank for a transmission structure. Figure 1 and Figure 2, which comprises: an optical liquid level sensor 11, which is arranged in the closed box B, wherein the optical liquid level sensor 11 is used to detect whether the liquid has leaked into the closed box B; a fluid control valve 12, which is electrically connected to the optical liquid level sensor 11, wherein the fluid control valve 12 is used to control the opening and closing of the closed box B; a liquid discharge pipe 13, which is connected to the closed box B through the fluid control valve 12, wherein the liquid discharge pipe 13 is used to The liquid leaking into the sealed box B is discharged outside the sealed box B; a diaphragm pump 14 is connected to the drain pipe 13, wherein the diaphragm pump 14 is used to extract the liquid leaking into the sealed box B into the drain pipe 13 and discharge it outside the drain pipe 13 to the waste liquid tank 20; and a check valve 15 is connected to the diaphragm pump 14, wherein the check valve 15 is used to prevent the liquid discharged outside the drain pipe 13 from flowing back or backflowing.

[0022] In this example, see Figure 1 and Figure 2 Since there are six closed boxes B that need to be leaked and drained, a photoelectric liquid level sensor 11 needs to be configured in each closed box B. And corresponding to each closed box B, a fluid control valve 12 and a liquid drain pipe 13 for extracting liquid are also configured to form a pipeline system for extracting liquid. The closed box B is a photoelectric liquid level sensor 11 installed on the inner wall of the driving side of the equipment (only the driving side has a belt and a synchronous wheel), and is fixed with a bracket 110, such as an L-shaped bracket with a long groove, and the height of the photoelectric liquid level sensor 11 can be adjusted at will (the sensing height will be slightly different depending on the model of the sensor). A straight pipe with an inner thread is welded on the top of the closed box B, and a pipette 17 plug-in connector is connected to the inside of the box, and the pipette 17 with a diameter of 10 is inserted to a place about 5mm away from the bottom of the box. The upper part of the closed box B is connected to an L-shaped quick-twist connector 120, and a connecting pipe 16, such as a corrosion-resistant Teflon hose, is connected to the fluid control valve 12.

[0023] In this example, please continue to refer to Figure 2 The liquid pipette 17 is a stainless steel pipe, which is disposed in the sealed box B, wherein one end of the liquid pipette 17 is adjacent to the bottom of the sealed box B, and the other end of the liquid pipette 17 is connected to the connecting pipe 16. The connecting pipe 16 connects the sealed box B and the fluid control valve 12, wherein the connecting pipe 16 is connected to the sealed box B, and the fluid control valve 12 is used to control the opening and closing of the connecting pipe 16. In addition, a bracket 110 is disposed in the sealed box B, wherein the photoelectric liquid level sensor 11 is disposed on the bracket 110, and the photoelectric liquid level sensor 11 can adjust the sensing height and the leakage level through the bracket 110.

[0024] In this example, please continue to refer to Figure 3The leakage detection and drainage system 1 further comprises a confluence pipe 18 connected to the plurality of drainage pipes 13 and the diaphragm pump 14, wherein the confluence pipe 18 is used to transport the liquid in the plurality of drainage pipes 13 to the diaphragm pump 14. It can be understood that the confluence pipe 18 connects the six pumping inlets with a flexible joint to merge them into a larger pipe, and then connects to the inlet of the diaphragm pump 14. The plurality of photoelectric liquid level sensors 11 are respectively arranged in the plurality of closed boxes B, the plurality of fluid control valves 12 are respectively electrically connected to the plurality of photoelectric liquid level sensors 11, and the plurality of drainage pipes 13 are respectively connected to the plurality of closed boxes B through the plurality of fluid control valves 12.

[0025] In some embodiments, please refer to Figure 4 , a quick-twist connector 120 is arranged on one side of the fluid control valve 12, wherein the quick-twist connector 120 is connected to the closed box B through the connecting pipe 16. In this embodiment, the fluid control valve 12 is a solenoid valve. In some embodiments, the discharge pipe 13 is a stainless steel bellows, and the connecting pipe 16 uses a corrosion-resistant Teflon hose. The fluid control valve 12 uses 6 fluid-controlled solenoid valves, each of which controls the outlet of each closed box B separately, in order to reduce costs, but due to the limited suction range and suction force of the diaphragm pump 14 used for pumping water (which can pump air and liquid, large particles), after testing, one pump can only pump 2-3 closed boxes B with water at the same time (the pump will only give priority to pumping objects that are close and labor-saving), so each closed box B is equipped with a fluid control valve 12, and quick-twist connectors 120 are installed before and after the fluid control valve 12, and connected to the closed box B with a Teflon hose.

[0026] In some embodiments, please refer to Figure 5 The leakage detection and drainage system 1 further includes a processor 19, which is electrically connected to a plurality of the photoelectric liquid level sensors 11 and the fluid control valves 12, wherein the processor 19 is used to process the sensing signals transmitted by the plurality of the photoelectric liquid level sensors 11, and determine the sequence of switching of the fluid control valves 12 according to the sequence of the sensing signals transmitted by the photoelectric liquid level sensors 11.

[0027] When the photoelectric liquid level sensor 11 in a sealed box B gives a signal, the solenoid valve of the diaphragm pump 14 on the same side opens (the diaphragm pump is pneumatic and needs a solenoid valve to control the switch). The diaphragm pump 14 starts to extract the leaked liquid. When the leaked liquid level is lower than the sensing range of the photoelectric liquid level sensor 11, the solenoid valve is closed after a delay of 5 seconds. The diaphragm pump 14 stops and the fluid control valve 12 of the corresponding sealed box B is closed.

[0028] When more than three sealed boxes B leak at the same time, the processor 19 preferentially lets the diaphragm pump 14 pump the sealed box B whose photoelectric liquid level sensor 11 lights up first, and then pumps the other sealed boxes B after completion.

[0029] The present invention provides a specific implementation method, wherein a connecting pipe 16 such as a Teflon hose is connected from the outlet above the water tank of the extraction tank, fixed on a column, and then connected to a fluid control valve group composed of a plurality of fluid control valves 12 in the left frame part, and the fluid control valve group is connected to a diaphragm pump 14 in the right frame part through a hose to form a leakage pipeline system. When the photoelectric liquid level sensor in a closed water tank gives a signal, the solenoid valve of the pump on the same side is opened (the diaphragm pump is pneumatic and requires a solenoid valve to control the switch), the pump is started, and the leakage is extracted. When the leakage level is lower than the sensing range of the sensor, the solenoid valve is closed for another 5 seconds, the pump stops, and the fluid solenoid valve of the corresponding box is closed. When more than three boxes leak at the same time, the box whose sensor lights up first is first extracted first, and then the other boxes are extracted after the end.

[0030] It is worth mentioning that the utility model uses photoelectric liquid level sensors, fluid control valves, diaphragm pumps, check valves and other connectors to form a complete set of leakage detection and drainage systems. The characteristics are: 1. The photoelectric liquid level sensor is used to sense whether there is leakage, and the sensing height and leakage level can be adjusted through the bracket. 2. The fluid control valve is used to control the opening and closing of each water tank to block the air and prevent the suction force of the pump from decreasing. 3. The liquid extraction pipeline is connected with a corrosion-resistant Teflon hose. 4. A diaphragm pump that can run dry is used to extract large particles or sticky liquids. 5. A check valve is used to prevent leakage and backflow of the combined pipeline.

[0031] In summary, the utility model discloses a liquid leakage detection and drainage system, which only needs to be configured with a water suction pump, and uses multiple liquid level sensors and fluid control valves to control which water tank among multiple water tanks to drain first, so as to achieve the requirements of liquid leakage detection and drainage in the most economical way.

[0032] However, what is described above is only a preferred embodiment of the present utility model, but it cannot be used to limit the scope of protection of the present utility model patent; therefore, any simple equivalent changes and modifications made according to the scope of protection of the present utility model patent and the contents of the specification are still within the scope of protection of the present utility model patent.

Claims

1. A liquid leakage detection and drainage system, used to detect whether liquid has entered a closed box and discharge the liquid outside the closed box, characterized in that: Include: a liquid level sensor, disposed in the sealed box, wherein the liquid level sensor is used to detect whether the liquid leaks into the sealed box; a fluid control valve electrically connected to the liquid level sensor, wherein the fluid control valve is used to control the opening and closing of the sealed box; a liquid drain pipe connected to the closed box through the fluid control valve, wherein the liquid drain pipe is used to discharge the liquid leaking into the closed box out of the closed box; a diaphragm pump connected to the drain pipe, wherein the diaphragm pump is used to draw the liquid leaking into the closed box into the drain pipe and discharge it out of the drain pipe; and A check valve is connected to the diaphragm pump, wherein the check valve is used to prevent the liquid discharged from the discharge pipe from flowing back or pouring back.

2. The leakage detection and drainage system according to claim 1, characterized in that: Also includes: A bracket is arranged in the closed box, wherein the liquid level sensor is arranged on the bracket, and the liquid level sensor can adjust the sensing height and the leakage level through the bracket.

3. The leakage detection and drainage system according to claim 1, characterized in that: Also includes: A connecting pipe connects the sealed box and the fluid control valve, wherein the connecting pipe is connected to the sealed box, and the fluid control valve is used to control the opening and closing of the connecting pipe.

4. The leakage detection and drainage system according to claim 3, characterized in that: Also includes: A quick-screw connector is arranged on one side of the fluid control valve, wherein the quick-screw connector is connected to the closed box through the connecting pipe.

5. The leakage detection and drainage system according to claim 1, characterized in that: The fluid control valve is a solenoid valve.

6. The leakage detection and drainage system according to claim 1, characterized in that: The liquid discharge pipe is a stainless steel bellows.

7. The leakage detection and drainage system according to claim 3, characterized in that: The connecting pipe uses a corrosion-resistant Teflon hose.

8. The leakage detection and drainage system according to claim 3, characterized in that: Also includes: A liquid pipette is arranged in the sealed box, wherein one end of the liquid pipette is adjacent to the bottom of the sealed box, and the other end of the liquid pipette is connected to the connecting pipe.

9. The leakage detection and drainage system according to claim 1, characterized in that: Also includes: A confluent pipe is connected to the plurality of discharge pipes and the diaphragm pump, wherein the confluent pipe is used to transport the liquid in the plurality of discharge pipes to the diaphragm pump, the plurality of liquid level sensors are respectively arranged in the plurality of sealed boxes, the plurality of fluid control valves are respectively electrically connected to the plurality of liquid level sensors, and the plurality of discharge pipes are respectively connected to the plurality of sealed boxes through the plurality of fluid control valves.

10. The leakage detection and drainage system according to claim 9, characterized in that: Also includes: A processor is electrically connected to the plurality of liquid level sensors and the plurality of fluid control valves, wherein the processor is used to process the sensing signals transmitted by the plurality of liquid level sensors. When more than one of the sealed boxes leak at the same time, the diaphragm pump is given priority to pump the sealed box whose liquid level sensor lights up first, and then pumps the other sealed boxes after completion.

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