Ph sensor inspection apparatus

Abstract

The present invention relates to a pH sensor inspection apparatus. Support legs of a support frame are arranged vertically. A support transverse frame of the support frame is arranged transversely. The support transverse frame is fixedly connected to a sensor fastening plate by means of a locking bolt. The sensor fastening plate is provided with a plurality of pH sensors. Lower portions of the pH sensors extend into a solution cylinder. The solution cylinder is fixedly arranged, and peripheries of an upper portion thereof are evenly provided with a plurality of air blowing holes. Liquid inlets are provided below the air blowing holes. A bottom portion of the solution cylinder is provided with a liquid outlet. The air blowing holes are respectively connected to solenoid valves. The solenoid valves are connected to air compressors. The liquid inlets are connected to water pumps. The water pumps are connected to multi-way valves. The multi-way valves are connected to a plurality of standard liquid bottles. The liquid outlet is connected to a liquid outlet valve and a collection bottle successively. The air compressor, the solenoid valve, the water pump, the multi-way valve, and the liquid outlet valve are respectively connected to a controller. According to the present invention, manual participation can be reduced, thereby greatly reducing labor costs and time costs, effectively improving inspection efficiency, and reducing sensor head residues by means of wind blowing.

Description

A pH sensor testing device Technical Field

[0001] The present invention relates to the technical field of water quality monitoring equipment, and in particular to an automatic pH electrode detection device that reduces manual participation, greatly reduces labor costs and time costs, effectively improves inspection efficiency, and reduces sensor head residue by wind blowing. Background Art

[0002] A pH electrode, also known as a pH probe, pH sensor, or pH electrode in English, is the part of a pH meter that contacts the substance being measured and is used to measure the electrode potential. The electrode used in potentiometric analysis is called a galvanic cell. A galvanic cell is a system that converts chemical reaction energy into electrical energy. The voltage of this cell is called the electromotive force (EMF). This EMF is composed of two half-cells. One half-cell is called the measuring electrode, whose potential is related to the activity of a specific ion. The other half-cell is the reference half-cell, commonly called the reference electrode. It is generally connected to the measuring solution and the measuring instrument. The most familiar and commonly used pH indicating electrode is the glass electrode. An industrial online pH measurement system typically consists of four components: a pH sensor (i.e., a pH electrode), a pH transmitter, an electrode housing, and a cable.

[0003] The service life of a pH electrode is generally one year, and it needs to be replaced regularly, so the demand is high. After each pH electrode is manufactured, it must be tested before leaving the factory. The prepared electrode must be connected to the testing machine and placed in three solutions with different pH values ​​for testing. Each test takes more than one minute, and the electrode head needs to be cleaned after each test. Existing pH sensor inspection methods are mostly manual inspections, and testers are required to measure the test liquid for each sensor one by one. In addition, a single sensor requires multiple test liquids for inspection and measurement, which is inefficient and has high labor costs. Therefore, sensor testing methods need to be improved and optimized.

[0004] There is a need for an automatic pH electrode detection device that reduces manual participation, greatly reduces labor costs and time costs, effectively improves inspection efficiency, and reduces sensor head residue by wind blowing.

[0005] Summary of the Invention

[0006] The purpose of the present invention is to provide a pH electrode automatic detection device which reduces manual participation, greatly reduces labor costs and time costs, effectively improves inspection efficiency, and reduces sensor head residue by wind blowing.

[0007] A pH sensor testing device, comprising:

[0008] A support frame, wherein the support legs of the support frame are arranged vertically, the support cross frame of the support frame is arranged horizontally, the support cross frame is fixedly connected to the sensor fixing plate by locking bolts, a plurality of pH sensors are arranged on the sensor fixing plate, and the lower part of the pH sensor extends into the solution tank;

[0009] The solution cylinder is fixedly arranged, and a plurality of air blowing holes are evenly arranged around the upper part, a liquid inlet is arranged below the air blowing holes, and a liquid outlet is arranged at the bottom of the solution cylinder;

[0010] The air holes are respectively connected to the solenoid valves, the solenoid valves are connected to the air compressor, the liquid inlet is connected to the water pump, the water pump is connected to the multi-way valve, the multi-way valve is connected to multiple standard liquid bottles, the liquid outlet is connected to the liquid outlet valve and the collection bottle in sequence, and the air compressor, solenoid valve, water pump, multi-way valve, and liquid outlet valve are respectively connected to the controller.

[0011] The support legs and the support cross frame are rotatably connected, and a locking wrench is provided at the connection between the support legs and the support cross frame.

[0012] The supporting cross frame is symmetrically provided with locking bolts on both sides thereof.

[0013] The sensor fixing plate is plate-shaped and has multiple rows of sensor fixing holes. A sensor protection ring is provided around the sensor fixing holes, and a pH sensor is placed on the sensor protection ring. A sensor fixing plate fixing groove is provided at the end of the sensor fixing plate, and the sensor fixing plate fixing groove passes through the column of the locking bolt.

[0014] The upper portion of the locking bolt is a nut, the middle portion is smooth, and the lower portion is provided with threads. The lower portion of the locking bolt is matched with the internal threaded hole of the supporting cross frame.

[0015] There are four blowing holes, and the angles between them are 90 degrees.

[0016] The solution cylinder has an opening at the top and a smooth arc surface at the bottom.

[0017] The controller controls the start and stop of the air compressor and the switch of the solenoid valve, the controller controls the start and stop of the water pump, the controller controls the opening channel of the multi-way valve, and the controller controls the switch of the liquid outlet valve.

[0018] The support legs of the support frame of the present invention are arranged vertically, and the support cross frame of the support frame is arranged horizontally. The support cross frame is fixedly connected to a sensor fixing plate by locking bolts. A plurality of pH sensors are arranged on the sensor fixing plate, and the lower portion of the pH sensor extends into the solution cylinder. The solution cylinder is fixedly arranged, and a plurality of air holes are evenly arranged around the upper portion. A liquid inlet is arranged below the air holes, and a liquid outlet is arranged at the bottom of the solution cylinder. The air holes are respectively connected to a solenoid valve, which is connected to an air compressor. The liquid inlet is connected to a water pump, which is connected to a multi-way valve, which is connected to multiple standard liquid bottles. The liquid outlet is sequentially connected to the liquid outlet valve and a collection bottle. The air compressor, solenoid valve, water pump, multi-way valve, and liquid outlet valve are respectively connected to a controller. The present invention reduces manual participation, greatly reduces labor costs and time costs, effectively improves inspection efficiency, and wind purge reduces sensor head residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic structural diagram of the present invention;

[0020] FIG2 is a side view of the support frame of the present invention;

[0021] FIG3 is a top view of the sensor fixing plate of the present invention;

[0022] FIG4 is a front view of the solution tank of the present invention;

[0023] FIG5 is a top view of the solution cylinder of the present invention;

[0024] FIG6 is a control relationship diagram of the present invention;

[0025] FIG7 is a flow chart of the present invention;

[0026] FIG8 is a second flow chart of the present invention;

[0027] In the figure: 1. Support frame, 2. Sensor fixing plate, 3. Solution cylinder, 4. pH sensor, 5. Air compressor, 6. Solenoid valve, 7. Water pump, 8. Multi-way valve, 9. Standard liquid bottle, 10. Liquid outlet valve, 11. Support leg, 12. Support cross frame, 13. Locking bolt, 14. Collection bottle, 15. Controller, 21. Sensor fixing hole, 22. Sensor protection ring, 23. Sensor fixing plate fixing groove, 31. Air hole, 32. Liquid inlet, 33. Liquid outlet. DETAILED DESCRIPTION

[0028] The present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0029] A pH sensor testing device comprises: a support frame 1, a support leg 11 of the support frame 1 is arranged vertically, a support cross frame 12 of the support frame 1 is arranged horizontally, the support cross frame 12 is fixedly connected to a sensor fixing plate 2 by a locking bolt 13, a plurality of pH sensors 4 are arranged on the sensor fixing plate 2, and the lower part of the pH sensor 4 extends into a solution cylinder 3; the solution cylinder 3 is fixedly arranged, a plurality of blowing holes 31 are evenly arranged around the upper part, a liquid inlet 32 ​​is arranged below the blowing holes 31, and a liquid outlet 33 is arranged at the bottom of the solution cylinder 3; the blowing holes 31 are respectively connected to the solenoid valve 6, the solenoid valve 6 is connected to the air compressor 5, the liquid inlet 32 ​​is connected to the water pump 7, the water pump 7 is connected to the multi-way valve 8, the multi-way valve 8 is connected to multiple standard liquid bottles 9, the liquid outlet 33 is sequentially connected to the liquid outlet valve 10 and the collection bottle 14, the air compressor 5, the solenoid valve 6, the water pump 7, the multi-way valve 8, and the liquid outlet valve 10 are respectively connected to the controller 15.

[0030] The support legs 11 and the support cross frame 12 are rotatably connected, and a locking wrench is provided at the connection between the support legs 11 and the support cross frame 12. The support cross frame 12 is symmetrically provided with locking bolts 13 on both sides of the horizontal direction. The sensor fixing plate 2 is plate-shaped, and is provided with multiple rows of sensor fixing holes 21. A sensor protection ring 22 is provided around the sensor fixing holes 21, and the pH sensor 4 is placed on the sensor protection ring 22. A sensor fixing plate fixing groove 23 is provided at the end of the sensor fixing plate 2, and the sensor fixing plate fixing groove 23 passes through the column of the locking bolt 13. The upper part of the locking bolt 13 is a nut, the middle part is smooth, and the lower part is provided with a thread. The lower part of the locking bolt 13 cooperates with the internal threaded hole of the support cross frame 12. There are four air holes 31, and the angle between them is 90 degrees. The solution cylinder 3 is open at the top and has a smooth arc surface at the bottom.

[0031] The controller 15 controls the start and stop of the air compressor 5 and the switch of the solenoid valve 6 , the controller 15 controls the start and stop of the water pump 7 , the controller 15 controls the opening of the channel of the multi-way valve 8 , and the controller 15 controls the switch of the liquid outlet valve 10 .

[0032] Support legs 11 are vertically arranged to support support frame 1. Support frame 1's support crossbar 12 is horizontally arranged to secure sensor mounting plate 2. Sensor mounting plate 2 is secured via locking bolts 13. Sensor mounting plate 2 extends through sensor mounting plate securing slots 23 into the middle of locking bolts 13. The lower portion of locking bolts 13 and support crossbar 12 are secured via a threaded connection. Multiple pH sensors 4 are placed in sensor mounting holes 21 of sensor mounting plate 2. Sensor protection rings 22, located around the outer ring of sensor mounting holes 21, protect pH sensors 4. The bottoms of pH sensors 4 extend into solution tank 3. pH sensors 4 are connected to a pH meter to display test results.

[0033] During use, controller 15 controls air compressor 5 to start, which in turn controls solenoid valve 6 corresponding to a single air hole 31 to pump air into solution cylinder 3, thereby drying pH sensor 4 within solution cylinder 3. Controller 15 controls water pump 7 to start, which also controls one channel of multi-way valve 8 to open. Water pump 7 draws standard solution from standard solution bottle 9 into solution cylinder 3. Multiple standard solution bottles 9 contain different standard solutions, which are selected by multi-way valve 8.

[0034] When a detection step in the solution cylinder 3 is completed and the standard solution in the solution cylinder 3 needs to be discharged, the controller 15 controls the liquid outlet valve 10 to open, and the standard solution in the solution cylinder 3 flows along the liquid outlet 33 into the collection bottle 14 for collection.

[0035] The solution cylinder 3 is fixedly arranged, and a plurality of blowing holes 31 are evenly arranged around the upper part. There are four blowing holes 31, and the angle between them is 90 degrees. When the gas enters the solution cylinder 3, the detection head on the pH sensor 4 is effectively dried, and the wind blowing reduces the residue on the sensor head, thereby improving the detection accuracy.

[0036] The first part of the test process is as follows: After the preparations are completed, the test process begins. The first step is to inject clean water for washing, then drain the washed liquid, then use air to blow dry, and then inject standard solution 1 (pH = 6.86). The pH detector reads and determines the original signal reading. If the test is qualified, the standard solution 1 is drained and the test data is recorded. If the test is unqualified, the pH sensor 4 is marked as having failed the test and the data is recorded. The pH detector notifies the controller 15 through an electrical signal to proceed to the next step of the test.

[0037] The second part of the test process is as follows: a second injection of clean water for washing, followed by draining the washed liquid, followed by air drying, and then the injection of standard solution 2 (pH = 4.01). The pH detector reads and determines the original signal reading. If the test is qualified, standard solution 2 is drained and the test data is recorded. If the test is unqualified, the pH sensor 4 is marked as having failed the test and the data is recorded. The pH detector notifies the controller 15 via an electrical signal to proceed to the next step of the test.

[0038] The third part of the test process is as follows: the pH sensor 4 is rinsed with clean water for a third time, then drained, dried with air, and then injected with standard solution 3 (pH = 9.18). The pH detector reads and determines the original signal reading. If the test is qualified, the standard solution 3 is drained and the test data is recorded. If the test is unqualified, the pH sensor 4 is marked as having failed the test and the data is recorded. The pH detector notifies the controller 15 via an electrical signal to proceed to the next step of the test.

[0039] The fourth part of the testing process is as follows: A fourth rinse with clean water is performed, followed by draining the rinse liquid and then air drying. The pH meter completes the test, and a label is manually printed for each pH sensor 4 that passes the test. After the test is complete, the operator proceeds with the remaining steps.

[0040] Automation reduces manual intervention in the inspection process, significantly reducing labor and time costs. Because solutions are formulated with reagents specified in national standards, no hazardous solutions are present, and test solutions are reusable within their expiration date. This effectively ensures the safety of the inspection process. This can effectively improve inspection efficiency and increase the number of sensor inspections completed per unit time. Manual processes are simplified, with manual intervention limited to sensor connection and fixation before inspection, and disassembly, labeling, and categorization after inspection. This also frees up manpower, allowing for multi-line production. Operation is simple: simply complete the preparation process and click "Start" on the main console. Maintenance is convenient: test solutions can be replaced using the logic of the inspection process. Scalability allows for simultaneous inspection of more sensors and multiple devices. Extensibility allows for the inspection of more sensor types beyond pH sensors.

[0041] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A pH sensor testing device, characterized in that: include: A support frame (1), wherein the support legs (11) of the support frame (1) are arranged vertically, and the support cross frame (12) of the support frame (1) is arranged horizontally, and the support cross frame (12) is fixedly connected to a sensor fixing plate (2) via locking bolts (13), and a plurality of pH sensors (4) are arranged on the sensor fixing plate (2), and the lower part of the pH sensor (4) extends into the solution cylinder (3); The solution cylinder (3) is fixedly arranged, and a plurality of air blowing holes (31) are evenly arranged around the upper part, a liquid inlet (32) is arranged below the air blowing holes (31), and a liquid outlet (33) is arranged at the bottom of the solution cylinder (3); The air blowing holes (31) are respectively connected to the electromagnetic valves (6), the electromagnetic valves (6) are connected to the air compressor (5), the liquid inlet (32) is connected to the water pump (7), the water pump (7) is connected to the multi-way valve (8), the multi-way valve (8) is connected to a plurality of standard liquid bottles (9), the liquid outlet (33) is sequentially connected to the liquid outlet valve (10) and the collection bottle (14), and the air compressor (5), the electromagnetic valve (6), the water pump (7), the multi-way valve (8), and the liquid outlet valve (10) are respectively connected to the controller (15); The support leg (11) and the support cross frame (12) are rotatably connected, and a locking wrench is provided at the connection between the support leg (11) and the support cross frame (12); The supporting cross frame (12) is symmetrically provided with locking bolts (13) on both sides in the transverse direction; The sensor fixing plate (2) is plate-shaped and is provided with a plurality of rows of sensor fixing holes (21). A sensor protection ring (22) is provided around the sensor fixing hole (21). A pH sensor (4) is placed on the sensor protection ring (22). A sensor fixing plate fixing groove (23) is provided at the end of the sensor fixing plate (2). The sensor fixing plate fixing groove (23) passes through the column of the locking bolt (13). The locking bolt (13) has a nut on the upper part, a smooth middle part, and a thread on the lower part. The lower part of the locking bolt (13) matches the internal thread hole of the supporting cross frame (12). The number of the blowing holes (31) is four, and the angle between them is 90 degrees; The solution cylinder (3) has an opening at the top and a smooth curved surface at the bottom; The controller (15) controls the start and stop of the air compressor (5) and the switch of the solenoid valve (6), the controller (15) controls the start and stop of the water pump (7), the controller (15) controls the opening channel of the multi-way valve (8), and the controller (15) controls the switch of the liquid outlet valve (10).

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