A detection system of a reverse osmosis membrane water purifier

Abstract

The utility model discloses a detection system of reverse osmosis membrane water purifier, including electric control module, first to thirteenth, air tightness detector, first pressure detector, gas flow detector, power detector, electronic pressure regulating valve and first to eighth solenoid valve, and electric control module is provided with control wiring and power connection, and power detector is set on power connection, the detection system of the utility model is connected with the water purifier of measuring and is connected and is passed into high pressure gas, and uses air tightness detector, rate detector, pressure detector, gas flow detector and other equipment detection can know the whole machine air tightness of water purifier, and whether each functional component in the inside is qualified.

Description

Technical Field

[0001] This utility model relates to the field of water purifier testing technology, and in particular to a testing system for reverse osmosis membrane water purifiers. Background Technology

[0002] A reverse osmosis water purifier typically consists of components such as a PP filter element, a carbon rod filter element, an inlet solenoid valve, a booster pump, a reverse osmosis protection box, a reverse osmosis membrane filter element, a flushing solenoid valve, a check valve, a high-pressure switch, a post-carbon filter element, and a control board. These components are connected using PE pipes and connecting cables, and then secured to the main body using various fasteners. After assembly, to ensure the water purifier functions properly, it needs to be tested. Once the test is passed, it is packaged and stored.

[0003] Currently, the testing of reverse osmosis membrane water purifiers after assembly often involves simulating normal customer usage by supplying water and electricity to the purifier and having employees observe whether it can produce water normally and whether there are any leaks in the joints and components. This method has the following problems: 1. Water testing may result in residual water inside the purifier, leading to market complaints such as odor, mold, and excessive microorganisms; 2. Manual observation may result in incomplete observation, false positives, and missed positives; 3. Test data requires manual recording, which is cumbersome and inconvenient for traceability and analysis. Utility Model Content

[0004] The present invention aims to overcome the defects in the prior art by providing a testing system for a reverse osmosis membrane water purifier. The testing system connects to the water purifier under test and introduces high-pressure gas. It uses equipment such as an air tightness tester, a rate tester, a pressure tester, and a gas flow tester to test and determine the overall air tightness of the water purifier and whether the internal functional components are qualified.

[0005] To achieve the above objectives, this utility model provides a testing system for a reverse osmosis membrane water purifier, including an electronic control module, first to thirteenth valves, and an air tightness tester, a first pressure tester, an air flow tester, a power tester, an electronic pressure regulating valve, and first to eighth solenoid valves connected to the electronic control module. The electronic control module is provided with control wiring and power wiring for connecting to the water purifier, and the power tester is installed on the power wiring. The first three-way valve, the second three-way valve, the electronic pressure regulating valve, the third three-way valve, the seventh solenoid valve, the fourth three-way valve, the fifth three-way valve, the sixth solenoid valve, the sixth three-way valve, the fifth solenoid valve, the seventh three-way valve, the third solenoid valve, the eighth three-way valve, the second solenoid valve, and the ninth three-way valve are connected in sequence by air pipes. The first three-way valve is connected to an air inlet pipe for connecting to an air source. The first three-way valve and the eighth three-way valve are connected by air pipes, and the first solenoid valve and the air tightness tester are sequentially installed on the air pipe between them. The second three-way valve and the ninth three-way valve are connected by air pipes, and the fourth solenoid valve and the thirteenth three-way valve are sequentially installed on the air pipe between them. The third three-way valve and the thirteenth three-way valve are connected by air pipes, and the eighth solenoid valve is installed on the air pipe between them. The first pressure tester is connected to the fourth three-way valve, and the air flow tester is connected to the sixth three-way valve. The ninth three-way valve is provided with a first interface for connecting to the water inlet of the water purifier. The seventh three-way valve is provided with a second interface for connecting to the concentrated water outlet of the water purifier. The fifth three-way valve is provided with a third interface for connecting to the pure water outlet of the water purifier.

[0006] A further feature is provided: an air filter is installed on the air intake pipe.

[0007] The system is further configured to include a barcode scanner connected to the electronic control module signal, which is used to identify the water purifier's unique code for inputting it into the system.

[0008] The configuration is further defined as follows: the control wiring is used to connect to the control board of the water purifier, and the power wiring is used to connect to the power cord of the water purifier.

[0009] The power supply wiring is further configured to include a socket for plugging in the power cord of the water purifier.

[0010] The airtightness tester is further configured as follows: the airtightness tester includes a first air path with an air inlet and an air outlet. The first air path is provided with an eleventh three-way valve, an air inlet solenoid valve, a second pressure tester, and a twelfth three-way valve in sequence on the path between the air inlet and the air outlet. The eleventh three-way valve and the twelfth three-way valve are also connected to a second air path, and the second air path is provided with a first exhaust solenoid valve, a thirteenth three-way valve, and a second exhaust solenoid valve in sequence. The third interface of the thirteenth three-way valve is an exhaust port structure that communicates with the atmosphere.

[0011] A further feature is provided: a silencer is connected to the airflow detector.

[0012] Compared with the prior art, the present invention has the following advantages: 1. Using filtered clean gas for testing, there is no residual water inside the water purifier, thus reducing the risk of market complaints such as odor, mold, and excessive microorganisms in the whole machine; 2. The test content and test judgment are all completed automatically by the system, reducing the risk of human error in judgment and test. 3. Test data is recorded by the system and uploaded to the server, which can display the test status and test problems in real time, facilitating data traceability and analysis in the later stage. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the gas connection between the detection system and the water purifier; Figure 2 This is the electrical schematic diagram of the detection system; Figure 3 This is a schematic diagram of the air circuit connection of the air tightness tester.

[0014] The following reference numerals are marked on the accompanying drawings: 100. Detection system; 10. Electrical control module; 11. Control wiring; 12. Power wiring; 21. First tee; 211. Air filter; 22. Second tee; 23. Third tee; 24. Fourth tee; 25. Fifth tee; 251. Third interface; 26. Sixth tee; 27. Seventh tee; 271. Second interface; 28. Eighth tee; 29. ​​Ninth tee; 291. First interface; 2010. Thirteenth tee; 30. Air tightness tester; 31. Air inlet; 32. Air outlet; 33. Eleventh tee; 34. 35. Second pressure sensor; 36. Twelfth three-way valve; 37. First exhaust solenoid valve; 38. Thirteenth three-way valve; 381. Exhaust port; 39. Second exhaust solenoid valve; 40. First pressure sensor; 50. Air flow meter; 51. Silencer; 60. Power meter; 70. Electronic pressure regulating valve; 81. First solenoid valve; 82. Second solenoid valve; 83. Third solenoid valve; 84. Fourth solenoid valve; 85. Fifth solenoid valve; 86. Sixth solenoid valve; 87. Seventh solenoid valve; 88. Eighth solenoid valve; 90. Barcode scanner; 200. Water purifier; 210. Water inlet; 220. Concentrate outlet; 230. Pure water outlet; 240. Control panel; 250. Water inlet solenoid valve; 260. Flushing solenoid valve; 270. Booster pump; 280. Check valve; 290. High-pressure switch. Detailed Implementation

[0015] The following describes a specific embodiment of the present invention in detail with reference to the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0016] This utility model discloses a detection system for a reverse osmosis membrane water purifier, such as... Figure 1 and Figure 2As shown, the device includes an electronic control module 10, first to thirteenth valves 2010, and an airtightness detector 30, a first pressure detector 40, an air flow detector 50, a power detector 60, an electronic pressure regulating valve 70, and first to eighth solenoid valves 88, all connected to the electronic control module 10 via signals. The electronic control module 10 is equipped with a control wiring 11 for connecting to the control board 240 of the water purifier 200, and a power wiring 12 for connecting to the power cord of the water purifier 200. The power wiring 12 is preferably connected to a location that facilitates connection to the water purifier 200. The power cord of the socket is connected to the power supply terminal 12. The power detector 60 is installed on the power supply terminal 12. The first three-way valve 21, the second three-way valve 22, the electronic pressure regulating valve 70, the third three-way valve 23, the seventh solenoid valve 87, the fourth three-way valve 24, the fifth three-way valve 25, the sixth solenoid valve 86, the sixth three-way valve 26, the fifth solenoid valve 85, the seventh three-way valve 27, the third solenoid valve 83, the eighth three-way valve 28, the second solenoid valve 82, and the ninth three-way valve 29 are connected in sequence by air pipes. The first three-way valve 21 is connected to an air inlet pipe for connecting to the air source. The air intake pipe is equipped with an air filter 211 for filtering the flowing gas; the first three-way valve 21 and the eighth three-way valve 28 are connected by an air pipe, and the first solenoid valve 81 and the air tightness tester 30 are sequentially installed on the air pipe between them; the second three-way valve 22 and the ninth three-way valve 29 are connected by an air pipe, and the fourth solenoid valve 84 and the thirteenth three-way valve 2010 are sequentially installed on the air pipe between them; the third three-way valve 23 and the thirteenth three-way valve 2010 are connected by an air pipe, and the eighth solenoid valve 88 is installed between them. On the air pipe, the first pressure detector 40 is connected to the fourth three-way connector 24, the air flow detector 50 is connected to the sixth three-way connector 26 and the air flow detector 50 is connected to a silencer 51 for silencing, the ninth three-way connector 29 is provided with a first interface 291 for connecting to the water inlet 210 of the water purifier 200, the seventh three-way connector 27 is provided with a second interface 271 for connecting to the concentrated water outlet of the water purifier 200, and the fifth three-way connector 25 is provided with a third interface 251 for connecting to the pure water outlet of the water purifier 200.

[0017] In this embodiment, as Figure 3 As shown, the airtightness tester 30 includes a first air passage with an air inlet 31 and an air outlet 32. The air inlet 31 is connected to a first solenoid valve 81, and the air outlet 32 ​​is connected to an eighth three-way valve 28. The first air passage is provided with an eleventh three-way valve 33, an air inlet solenoid valve 34, a second pressure tester 35, and a twelfth three-way valve 36 in sequence on the path between the air inlet 31 and the air outlet 32. A second air passage is also connected between the eleventh three-way valve 33 and the twelfth three-way valve 36, and the second air passage is provided with a first exhaust solenoid valve 37, a thirteenth three-way valve 38, and a second exhaust solenoid valve 39 in sequence. The third interface 251 of the thirteenth three-way valve 38 is an exhaust port 381 structure that is connected to the atmosphere.

[0018] In this embodiment, the detection system 100 also includes a barcode scanner 90 that is connected to the electronic control module 10. The barcode scanner 90 is used to identify the special code of the water purifier 200 and record it into the system, thereby facilitating the traceability and analysis of data in the later stage.

[0019] Specific testing of detection system 100 Select the model of the water purifier to be tested 200: Select the model of the water purifier to be tested 200 on the touch screen of the testing system 100 (for the first-time production of water purifier 200, manually enter the model and corresponding test parameters).

[0020] Connecting the water purifier 200 to the detection system 100: Use a PE air hose to connect the first interface 291 of the detection system 100 to the water inlet 210 of the water purifier 200, the second interface 271 to the concentrated water outlet 220 of the water purifier 200, and the third interface 251 to the pure water outlet 230 of the water purifier 200. Plug the power cord of the water purifier 200 into the socket of the detection system 100, and connect the control wiring 11 of the detection system 100 to the control board 240 of the water purifier 200.

[0021] Enter the unique code for water purifier 200: Use the barcode scanner 90 of the detection system 100 to scan the unique code on the water purifier 200 (each water purifier 200 has a unique unique code). The indicator light on the barcode scanner 90 will flash once and the buzzer will sound once, indicating that the scan was successful and the unique code of the water purifier 200 has been entered into the detection system 100. The unique code of the water purifier 200 will be displayed on the display screen of the detection system 100, and the detection system 100 will automatically start detecting the water purifier 200.

[0022] Overall airtightness test: The testing system 100 opens the first, second, and third solenoid valves 83, activating the airtightness tester 30. The airtightness tester 30 opens its internal air intake solenoid valve 34 to inject compressed air (0.7MPa) into the water purifier 200. After inflating for 15 seconds (different inflating times are set for different water purifiers 200), the air intake solenoid valve 34 is closed, and the pressure is stabilized for 25 seconds (different stabilization times are set for different water purifiers 200). During pressure stabilization, the pressure detector of the airtightness tester 30 detects that the pressure inside the water purifier 200 is greater than 0.6MPa, which is acceptable; less than 0.6MPa is unacceptable. After pressure stabilization, the second pressure detector 35 of the airtightness tester 30 tests the pressure inside the water purifier 200. The air pressure drop value within 0.05 seconds (different detection times are set for different water purifiers 200) is considered qualified if the air pressure drop value is less than the judgment value (different judgment values ​​correspond to different water purifiers 200), and unqualified if it is greater than the judgment value. After the test is completed, the test data is uploaded, the first solenoid valve 81 of the test system 100 is closed, the fifth and sixth solenoid valves 86 of the test system 100 are opened, and the first exhaust solenoid valve 37 and the second exhaust solenoid valve 39 of the airtightness tester 30 are opened to discharge the compressed air in the water purifier 200. After the exhaust is completed, the second, third, fifth and sixth solenoid valves 86 of the test system 100 are closed, and the first exhaust solenoid valve 37 and the second exhaust solenoid valve 39 of the airtightness tester 30 are closed.

[0023] Inlet solenoid valve 250 detection: 1. Inlet solenoid valve 250 closed state detection: The detection system 100 powers on the water purifier 200 and sends a closing command to the control board 240 of the water purifier 200 to close the inlet solenoid valve 250 of the water purifier 200. The detection system 100 opens the fourth solenoid valve 84 to flush compressed air (0.7MPa) into the water purifier 200. The first pressure detector 40 of the detection system 100 detects the pressure rise value within 10 seconds. If the pressure rise value is less than the judgment value (different judgment values ​​correspond to different water purifiers 200), it is qualified; if it is greater than the judgment value, it is unqualified. 2. Inlet solenoid valve 250 Opening status detection: A command to open the inlet solenoid valve 250 is sent to the control board 240 of the water purifier 200 to open the inlet solenoid valve 250 of the water purifier 200. If the pressure value detected by the first pressure detector 40 of the detection system 100 is greater than the judgment value (different judgment values ​​correspond to different water purifiers 200), it is qualified; if it is less than the judgment value, it is unqualified. The power detector 60 of the detection system 100 simultaneously detects the power value of the inlet solenoid valve 250 in the open state. If it is within the set range (different set ranges correspond to different water purifiers 200), it is qualified; if not, it is unqualified. After the detection is completed, the detection data is uploaded, the fourth solenoid valve 84 of the detection system 100 is closed, the fifth and sixth solenoid valves 86 of the detection system 100 are opened to discharge the compressed air in the water purifier 200, and after the venting is completed, the fifth and sixth solenoid valves 86 of the detection system 100 are closed, and the power to the water purifier 200 is turned off.

[0024] Flushing solenoid valve 260 detection: 1. Flushing solenoid valve 260 de-energized detection: The detection system 100 energizes the water purifier 200 and sends an opening command to the inlet solenoid valve 250 to the control board 240 of the water purifier 200 to open the inlet solenoid valve 250 of the water purifier 200. The detection system 100 opens the fourth and fifth solenoid valves 85. The air flow detector 50 of the detection system 100 detects the air flow value. If it is within the set range (different set ranges correspond to different water purifiers 200), it is qualified; otherwise, it is unqualified. 2. Flushing solenoid valve 260 energized detection: The control board 240 of the water purifier 200 sends an opening command to the flushing solenoid valve 260 to open the inlet solenoid valve 250. If the airflow value detected by the airflow detector 50 of the detection system 100 is greater than the judgment value (different judgment values ​​correspond to different water purifiers 200), it is qualified; otherwise, it is unqualified. A command to close the inlet solenoid valve 250 is sent to the control board 240 of the water purifier 200 to close the inlet solenoid valve 250 of the water purifier 200. If the power value of the flushing solenoid valve 260 in the open state of the detection system 100 is within the set range (different set ranges correspond to different water purifiers 200), it is qualified; otherwise, it is unqualified. After the test is completed, the test data is uploaded, the fourth solenoid valve 84 of the detection system 100 is closed, the sixth solenoid valve 86 of the detection system 100 is opened to discharge the compressed air in the water purifier 200, and after the venting is completed, the fifth and sixth solenoid valves 86 of the detection system 100 are closed, and the power to the water purifier 200 is turned off.

[0025] Booster pump 270 test: The detection system 100 powers on the water purifier 200 and sends a command to the control board 240 of the water purifier 200 to start the booster pump 270. The detection system 100 opens the fifth and sixth solenoid valves 86. The power detector 60 of the detection system 100 detects the power value of the booster pump 270 during operation. If the power value is within the set range (different water purifiers 200 have different set ranges), it is qualified; otherwise, it is unqualified. After the test is completed, the test data is uploaded, the water purifier 200 is powered off, and the fifth and sixth solenoid valves 86 of the detection system 100 are closed.

[0026] Check valve 280 detection: The detection system 100 powers on the water purifier 200 and sends an inlet solenoid valve 250 opening command to the control board 240 of the water purifier 200 to open the inlet solenoid valve 250 of the water purifier 200. The detection system 100 adjusts the output pressure of the electronic pressure regulating valve 70 to the test pressure value (different pressure values ​​correspond to different water purifiers 200), and opens the eighth solenoid valve 88 to purge air into the water purifier 200. After the pressure value detected by the first pressure detector 40 of the detection system 100 is consistent with the test pressure, the detection system 100 gradually reduces the output pressure of the electronic pressure regulating valve 70 to 0 over 5 seconds. Pa, the pressure drop value of the first pressure detector 40 during this period is detected. If the pressure drop value is less than the judgment value (different judgment values ​​correspond to different water purifiers 200), it is qualified; if it is greater than the judgment value, it is unqualified. After the test is completed, the test data is uploaded, the fifth and sixth solenoid valves 86 of the test system 100 are opened to discharge the compressed air in the water purifier 200. After the venting is completed, the fifth, sixth and eighth solenoid valves 88 of the test system 100 are closed, the electronic pressure regulating valve 70 is reset, and the power to the water purifier 200 is turned off.

[0027] High-pressure switch 290 detection: 1. High-pressure switch 290 open state detection: The detection system 100 powers on the water purifier 200 and sends an inlet solenoid valve 250 opening command to the control board 240 of the water purifier 200 to open the inlet solenoid valve 250 of the water purifier 200. The detection system 100 adjusts the output pressure of the electronic pressure regulating valve 70 to the test pressure at which the high-pressure switch 290 is open (different pressure values ​​correspond to different water purifiers 200). The eighth solenoid valve 88 is opened to purge air into the water purifier 200. After the first pressure detector 40 of the detection system 100 detects that the pressure value is consistent with the test pressure, the detection control board 240 checks whether there is a high-pressure switch 290 open signal feedback. If there is, it is qualified; otherwise, it is unqualified. 2. High-pressure switch 290 closed state detection Open the seventh solenoid valve 87. The detection system 100 adjusts the output pressure of the electronic pressure regulating valve 70 to the test pressure when the high-pressure switch 290 is closed (different pressure values ​​correspond to different water purifiers 200). After the pressure value detected by the first pressure detector 40 of the detection system 100 is consistent with the test pressure, check whether the control board 240 has a feedback signal indicating that the high-pressure switch 290 is closed. If it does, the test is qualified; otherwise, it is unqualified. After the test is completed, upload the test data, close the seventh and eighth solenoid valves 88 of the detection system 100, open the fifth and sixth solenoid valves 86 of the detection system 100 to discharge the compressed air in the water purifier 200, close the fifth and sixth solenoid valves 86 of the detection system 100 after the air is discharged, reset the electronic pressure regulating valve 70, and disconnect the power to the water purifier 200.

[0028] Control board 240 program test: The detection system 100 powers on the water purifier 200, queries the program burned into the control board 240 and compares it with the corresponding program of the water purifier 200 in the system. If the programs match, it is qualified; if they do not match, it is unqualified. After the test is completed, the test data is uploaded and the water purifier 200 is powered off.

[0029] Remove the detection system 100 from the water purifier 200: disconnect the power cord of the water purifier 200 from the socket of the detection system 100, disconnect the control wiring 11 of the detection system 100 from the control board 240 of the water purifier 200, and disconnect the PE pipe connecting the detection system 100 to the water purifier 200.

[0030] Water purifier 200 test data query: Operators can view the test data of the water purifier 200 on the touch screen of the testing system 100, and carry out targeted repairs for those that fail to meet the standards. Technicians can register the test data of the water purifier 200 in the system backend and retrieve it for traceability.

[0031] Compared with the prior art, the present invention has the following advantages: 1. Using filtered clean gas for testing, there is no residual water inside the water purifier, thus reducing the risk of market complaints such as odor, mold, and excessive microorganisms in the whole machine; 2. The test content and test judgment are all completed automatically by the system, reducing the risk of human error in judgment and test. 3. Test data is recorded by the system and uploaded to the server, which can display the test status and test problems in real time, facilitating data traceability and analysis in the later stage.

[0032] The above-disclosed embodiments are merely examples of the present utility model. However, the present utility model is not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A detection system for a reverse osmosis membrane water purifier, characterized in that, It includes an electronic control module, first to thirteenth valves, and an air tightness tester, a first pressure tester, an air flow tester, a power tester, an electronic pressure regulating valve, and first to eighth solenoid valves connected to the electronic control module. The electronic control module is provided with control wiring and power wiring for connecting to the water purifier, and the power tester is provided on the power wiring. The first three-way valve, the second three-way valve, the electronic pressure regulating valve, the third three-way valve, the seventh solenoid valve, the fourth three-way valve, the fifth three-way valve, the sixth solenoid valve, the sixth three-way valve, the fifth solenoid valve, the seventh three-way valve, the third solenoid valve, the eighth three-way valve, the second solenoid valve, and the ninth three-way valve are connected in sequence by air pipes. The first three-way valve is connected to an air inlet pipe for connecting to an air source. The first three-way valve and the eighth three-way valve are connected by air pipes, and the first solenoid valve and the air tightness tester are sequentially installed on the air pipe between them. The second three-way valve and the ninth three-way valve are connected by air pipes, and the fourth solenoid valve and the thirteenth three-way valve are sequentially installed on the air pipe between them. The third three-way valve and the thirteenth three-way valve are connected by air pipes, and the eighth solenoid valve is installed on the air pipe between them. The first pressure tester is connected to the fourth three-way valve, and the air flow tester is connected to the sixth three-way valve. The ninth three-way valve is provided with a first interface for connecting to the water inlet of the water purifier. The seventh three-way valve is provided with a second interface for connecting to the concentrated water outlet of the water purifier. The fifth three-way valve is provided with a third interface for connecting to the pure water outlet of the water purifier.

2. The detection system for a reverse osmosis membrane water purifier according to claim 1, characterized in that, An air filter is installed on the air intake pipe.

3. The detection system for a reverse osmosis membrane water purifier according to claim 1, characterized in that, It also includes a barcode scanner connected to the electronic control module signal, which is used to identify the water purifier's unique code to enter it into the system.

4. The detection system for a reverse osmosis membrane water purifier according to claim 1, characterized in that, The control wiring is used to connect to the control board of the water purifier, and the power wiring is used to connect to the power cord of the water purifier.

5. The detection system for a reverse osmosis membrane water purifier according to claim 4, characterized in that, The power supply wiring is connected to a socket for plugging in the power cord of the water purifier.

6. The detection system for a reverse osmosis membrane water purifier according to claim 1, characterized in that, The airtightness tester includes a first air path with an air inlet and an air outlet. The first air path is provided with an eleventh three-way valve, an air inlet solenoid valve, a second pressure tester, and a twelfth three-way valve in sequence on the path between the air inlet and the air outlet. The eleventh three-way valve and the twelfth three-way valve are connected to a second air path, and the second air path is provided with a first exhaust solenoid valve, a thirteenth three-way valve, and a second exhaust solenoid valve in sequence. The third interface of the thirteenth three-way valve is an exhaust port structure that communicates with the atmosphere.

7. The detection system for a reverse osmosis membrane water purifier according to claim 1, characterized in that, The air flow meter is connected to a silencer.

Images