A pH sensor probe automatic cleaning, calibration and maintenance device system

Abstract

The present invention discloses a pH sensor probe automatic cleaning, calibration and maintenance device system, including a pH sensor probe automatic cleaning, calibration and maintenance device, a medium conveying pipeline system and a PLC controller. The device includes a telescopic rod, a pH sensor probe, a cleaning container, a cyclone cleaner, a cut-off valve, a medium outlet, and a device integrated protective cover. The medium conveying pipeline system is connected to the cyclone cleaner pipeline and is used to provide the cyclone cleaner with a variety of media for cleaning, calibration and maintenance of the pH sensor probe. The pH sensor probe is arranged in a through-channel manner and has a working state of extending out of the medium outlet and a cleaning, calibration and maintenance state of retracting to the top of the cut-off valve. In this state, the closing of the cut-off valve can form the space required for the cleaning, calibration and maintenance state. The present invention realizes the automatic cleaning, automatic calibration and automatic maintenance of the pH sensor probe.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning, calibration and maintenance of an immersed continuous online monitoring sensor probe in sewage treatment, and in particular to an automatic cleaning, calibration and maintenance device system for a pH sensor probe. Background Art

[0002] The method for continuous and rapid measurement of the pH of the liquid to be measured is based on the dual-electrode method, where the two electrodes are the indicator electrode and the reference electrode. The online pH sensor probe currently used in sewage treatment plants has designed the two electrodes as one, which is convenient for on-site measurement and daily maintenance.

[0003] pH sensor probes generally use glass electrodes, where the indicator electrode is sensitive to hydrogen ions and is made of a sensitive glass membrane. With the change of hydrogen ions in the liquid to be measured, the potential of the gel layer inside and outside the sensitive glass membrane will change; the reference electrode has no response to hydrogen ions and is made of glass that is not sensitive to hydrogen ions, which can provide the same and stable potential point. The pH value of the solution to be measured can be determined by the potential difference between the two electrodes. Under ideal conditions and a solution temperature of 25°C, 59.16mV = 1pH.

[0004] In the use environment of sewage treatment plants, pH sensor probes are mostly immersed, that is, they are directly set in the liquid to be tested and continuously measure the pH with the water flow. The liquid to be tested includes raw sewage, activated sludge mixed liquor, sewage from other treatment units, and external sewage. The raw sewage varies greatly according to the type of sewage plant, and is usually divided into municipal sewage and industrial wastewater.

[0005] The water quality of industrial wastewater is complex and the measurement environment is changeable; the activated sludge mixed liquor is mostly relatively stable, but the measurement environment is poor; the measurement environment of other treatment unit wastewater is changeable depending on the treatment unit process; treated wastewater usually has fewer pollutants and meets the emission standards, so the measurement environment is the best, but for standard sewage, the measurement environment is still poor.

[0006] Due to the inherent disadvantages of glass electrodes being fragile and susceptible to environmental interference, pH sensor probe contamination is more frequent in raw sewage, activated sludge mixed liquor and other treatment unit sewage. Contamination that affects pH measurement results usually occurs at the interface between the sensitive glass bulb of the indicator electrode and the reference electrode liquid. For example, suspended matter pollutants such as activated sludge adhere to the surface, and calcium chloride, calcium carbonate and other substances in the water accumulate and scale over a long period of time, which affects the accuracy, sensitivity and response characteristics of the pH sensor.

[0007] At present, the cleaning, calibration and maintenance of pH sensor probes are basically carried out manually, which usually leads to untimely maintenance, inconsistent maintenance quality, and damage to glass electrodes during maintenance. Especially under poor measurement environments and variable working conditions, the maintenance of pH sensor probes is more frequent. It is difficult to complete the cleaning, calibration and maintenance in a timely, efficient and high-quality manner manually, which can easily lead to the accumulation of pollution, resulting in a gradual deterioration of the maintenance effect, affecting the accuracy of pH measurement data and shortening the service life of the sensor. Summary of the invention

[0008] The purpose of the present invention is to provide a pH sensor probe automatic cleaning, calibration and maintenance device system to achieve automatic cleaning, automatic calibration and automatic maintenance of the pH sensor probe, thereby solving the problems of insufficient maintenance timeliness, uneven maintenance quality, easy accumulation of pollution and sensor damage, and affecting the sensor detection effect and service life in manual operations.

[0009] To this end, the present invention provides a pH sensor probe automatic cleaning, calibration and maintenance device system, including a pH sensor probe automatic cleaning, calibration and maintenance device, a medium conveying pipeline system and a PLC controller, wherein the pH sensor probe automatic cleaning, calibration and maintenance device includes a telescopic rod, a pH sensor probe, a cleaning container, a cyclone cleaner, a cut-off valve, a medium discharge port, and a device integrated protective cover, wherein the bottom of the telescopic component of the telescopic rod is connected to the pH sensor probe, the cleaning container, the cyclone cleaner, the cut-off valve, and the medium discharge port are sequentially connected from top to bottom to form a channel, the fixed part of the telescopic rod is connected to the device integrated protective cover, the medium conveying pipeline system is connected to the cyclone cleaner pipeline, and is used to provide the cyclone cleaner with a variety of media for cleaning, calibration and maintenance of the pH sensor probe, the pH sensor probe is arranged in a through-channel manner, and has a working state of extending out of the medium discharge port and a cleaning, calibration and maintenance state of retracting to the top of the cut-off valve, and when the pH sensor probe is in the cleaning, calibration and maintenance state, the cut-off valve is closed to form a space required for the cleaning, calibration and maintenance state.

[0010] Compared with the prior art, the present invention has the following technical effects: 1. The device system is connected to the pH sensor probe through a telescopic rod to realize the switching of the pH sensor probe working state and the cleaning, maintenance and calibration state. The cleaning container, cyclone cleaner and cut-off valve are connected to form the space required for cleaning, maintenance and calibration. The organic combination of the two makes the device structure simple and stable in operation.

[0011] 2. In the automatic cleaning cycle, the device system uses compressed air input, which passes through the internal guide groove of the cyclone cleaner to form a directional cyclone with the cleaning agent. Through hydraulic impact, the cleaning effect of the pH sensor probe is enhanced. At the same time, since there is no direct contact (such as a brush) during cleaning, damage to the pH sensor probe during cleaning is avoided. The cleaning agent can be flexibly replaced according to the working environment of the pH sensor probe at different sites, which enhances the versatility and cleaning and maintenance effect of the device system.

[0012] 3. The device system includes automatic cleaning cycle, automatic calibration cycle, automatic maintenance cycle and automatic working cycle to ensure the automation, flexibility and high efficiency of the operation process of the device system.

[0013] This device systematically solves the problems of insufficient timeliness, inconsistent quality, easy pollution accumulation, electrode damage and reduced service life in the cleaning, calibration and maintenance of conventional pH sensor probes. It also solves the problems of insufficient versatility, limited effect and complex structure of existing solutions. Especially for poor or changeable pH sensor probe working environments such as raw sewage and activated sludge mixtures, it can complete the cleaning, calibration and maintenance of pH sensor probes in a timely, efficient and high-quality manner, ensuring the accuracy of pH measurement data while extending the service life of the sensor.

[0014] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 Schematic diagram of the automatic cleaning, calibration and maintenance device system for the pH sensor probe according to the present invention.

[0016] Description of Reference Numerals 1. Telescopic rod; 2. Connector; 3. pH sensor probe; 4. Cleaning container; 5. Cyclone cleaner; 5-1. Common delivery pipeline for cleaning agent (a), flushing agent (b) and protective agent (c); 5-2. Delivery pipeline for calibration agent 1 (d); 5-3. Delivery pipeline for calibration agent 2 (e); 5-4. Delivery pipeline for compressed air (f); V1. Cleaning agent (a) control valve; V2. Flushing agent (b) control valve; V3. Protective agent (c) control valve; V4. Compressed air control valve; P1. Common delivery and metering device for cleaning agent (a), flushing agent (b) and protective agent (c); P2. Delivery and metering device for calibration agent 1 (d); P3. Delivery and metering device for calibration agent 2 (e); 6. Cut-off valve; 7. Medium discharge port; 8. Telescopic rod connector; 9. Double device connector; 10. Device integrated protective cover; 11. PLC controller. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0018] like Figure 1 As shown, the automatic cleaning, calibration and maintenance device system of the pH sensor probe of the present invention includes: a telescopic rod 1, a connector 2, a cleaning container 4, a cyclone cleaner 5, a cut-off valve 6, a medium discharge port 7, a telescopic rod connector 8, a dual device connector 9, a device integrated protective cover 10, a pipeline system, and a PLC controller 11.

[0019] The pipeline system includes medium conveying pipelines 5-1, 5-2, 5-3, 5-4, control valves V1, V2, V3, V4, and conveying metering devices P1, P2, P3.

[0020] The lower end of the telescopic part of the telescopic rod 1 is connected to the pH sensor probe 3 through the connector 2.

[0021] The cleaning container 4 is connected to the cyclone cleaner 5 , the cyclone cleaner 5 is connected to the cut-off valve 6 , and the cut-off valve 6 is connected to the medium discharge port 7 .

[0022] The cleaning container 4, the cyclone cleaner 5, the cut-off valve 6 and the medium outlet 7 are connected together, and the outside is a device integrated protection cover 10, which is connected to the upper end of the cleaning container 4 and the lower end of the medium outlet 7 to form a stable whole.

[0023] The device integrates a protective cover 10, which is connected and fixed to the non-telescopic part of the telescopic rod 1 through a telescopic rod connector 8 to form a stable whole.

[0024] The device integrated protection cover 10 is connected by a double device connector 9 to form a stable whole. The double device connector has a middle vertical fixing rod, which is connected and fixed to the fixing device on the measuring point structure.

[0025] For the implementation of the automatic cleaning, calibration and maintenance device for a single pH sensor probe, the non-telescopic portion of the telescopic rod 1 can be fixed to the fixed connecting rod of the original pH sensor probe 3 without the need for an additional fixing device.

[0026] The connection between the telescopic part of the telescopic rod 1 and the pH sensor probe 3 passes through the hollow interior of the connection between the cleaning container 4, the cyclone cleaner 5, the cut-off valve 6 and the medium discharge port 7.

[0027] Cleaning agent a, flushing agent b, protective agent c, calibration agent 1 d, calibration agent 2 e, and compressed air f are connected to the filling hole of the cyclone cleaner 5 through pipelines and connectors. Among them, the pipelines of cleaning agent a, flushing agent b, and protective agent c are respectively connected to control valves V1, V2, and V3, and the control valve outlet pipeline to the inlet of the cleaning maintenance delivery metering device P1 is combined into a single pipeline, which is connected to the cleaning maintenance agent filling hole of the cyclone cleaner 5 through a connector.

[0028] The pipelines of the calibration agent 1d and the calibration agent 2e are respectively connected to their conveying and metering devices P2 and P3, and the outlet pipelines are respectively connected to the calibration agent filling holes of the cyclone cleaner 5 through the connectors.

[0029] The compressed air pipeline is connected to the control valve V4, and the outlet pipeline is connected to the compressed air hole of the cyclone cleaner 5 through a connector.

[0030] For the implementation of the automatic cleaning, calibration and maintenance device for dual pH sensor probes, two sets of the above-mentioned cleaning agent a, flushing agent b, protective agent c, calibrating agent 1 d, calibrating agent 2 e, compressed air pipeline, control valves V1, V2, V3, V4, and conveying metering devices P1, P2, and P3 need to be configured. The corresponding pipeline connections and pipeline merging are exactly the same as the above-mentioned methods. The pipeline systems are respectively connected to two sets of automatic cleaning, calibration and maintenance devices for pH sensor probes, and the cleaning agent a, flushing agent b, protective agent c, calibrating agent 1 d, calibrating agent 2 e, and compressed air share the same source.

[0031] The PLC controller 11 simultaneously controls the cycle process of two sets of pH sensor probe automatic cleaning, calibration and maintenance devices.

[0032] The automatic cleaning, calibration and maintenance method of the present invention is described below by taking an automatic cleaning, calibration and maintenance device for dual pH sensor probes as an example.

[0033] like Figure 1 As shown, probe B is set to be in working state, and probe A is in a state of waiting for a continuous cycle or waiting for work after the maintenance cycle is completed.

[0034] Cleaning cycle The working cycle of probes A and B is set by the PLC control platform. Generally, the setting time of the two is the same, but they can also be set separately according to the needs of the site. The working cycle is not less than the total execution time of the set cleaning cycle, maintenance cycle and calibration cycle. In this embodiment, it is set to 12h.

[0035] When the actual working time of probe B reaches 12 hours, the system enters a cleaning cycle. The cleaning cycle of the present invention includes the following steps: Step 1: After the pH sensor probe 3 reaches the set working cycle, the cleaning cycle starts.

[0036] Step 2: The PLC controller 11 transmits a pH sensor stop signal, the pH sensor probe is marked as non-working, and the detection value stops uploading.

[0037] Step 3, the telescopic rod 1 is controlled to start, the telescopic part of the telescopic rod 1 retracts upward, and the pH sensor probe 3 is lifted upward until the bottom of the probe is located inside the cyclone cleaner 5, and the telescopic rod 1 is controlled to stop.

[0038] Step 4, the cut-off valve 6 is controlled to start, the cut-off valve 6 is closed, and after it is fully closed, a closed space is formed, and the cut-off valve 6 is controlled to stop.

[0039] Step 5, cleaning agent a control starts, cleaning agent a pipeline valve V1 is opened, and after it is fully opened, the cleaning maintenance delivery metering device P1 is opened to pump cleaning agent a into the cyclone cleaner 5. After reaching the set metering value, the cleaning maintenance delivery metering device P1 stops, the cleaning agent a pipeline valve V1 is closed, and the cleaning agent a control stops. The pH sensor probe 3 is in a static soaking state of the cleaning agent a.

[0040] Step 6: During the set static soaking time, the compressed air control is periodically started, the compressed air pipeline valve V4 is opened, and the compressed air is pressed into the cyclone cleaner 5, and contacts with the cleaning agent a through the guide groove to form a directional cyclone to clean the pH sensor probe 3. After the set cleaning time is reached, the compressed air pipeline valve V4 is closed. After the set number of cleaning times is reached, the compressed air control stops.

[0041] Step 7, the cut-off valve 6 is controlled to start, the cut-off valve 6 is opened, and after it is fully opened, the set delay interval is reached, the cut-off valve 6 is closed, and after it is fully closed, the cut-off valve 6 is controlled to stop.

[0042] Step 8: The flushing agent control is started, the flushing agent b pipeline valve V2 is opened, and after it is fully opened, the cleaning maintenance delivery metering device P1 is opened to pump the flushing agent b into the cyclone cleaner 5. After reaching the set metering value, the cleaning maintenance delivery metering device P1 is stopped, the flushing agent b pipeline valve V2 is closed, and the flushing agent b control is stopped.

[0043] Step 9, compressed air control is started, compressed air pipeline valve V4 is opened, compressed air is pressed into the cyclone cleaner 5, and contacts with the cleaning agent a through the guide groove to form a directional cyclone to rinse the pH sensor probe 3. After the set rinsing time is reached, the compressed air pipeline valve V4 is closed and the compressed air control is stopped.

[0044] Step 10, the cut-off valve 6 is controlled to start, the cut-off valve 6 is opened, and after it is fully opened, the set delay interval is reached, the cut-off valve 6 is closed, and after it is fully closed, the cut-off valve 6 is controlled to stop.

[0045] Maintenance cycle After the cleaning cycle or calibration cycle is completed, the maintenance cycle is continued. After the cleaning cycle is completed, the system determines to enter the maintenance cycle; or after the calibration cycle is completed, the difference between the remaining time of the A probe working cycle and the time required for the maintenance cycle of the B probe is greater than the set value, and the system enters the maintenance cycle. The maintenance cycle of the present invention includes the following steps 1 to 2.

[0046] Step 1: The protective agent C control is started, the protective agent C pipeline valve V3 is opened, and after it is fully opened, the cleaning and maintenance delivery metering device P1 is opened to pump the protective agent C into the cyclone cleaner 5. After reaching the set metering value, the cleaning and maintenance delivery metering device P1 is stopped, the protective agent C pipeline valve V3 is closed, and the protective agent C control is stopped.

[0047] Step 2: The pH sensor probe 3 is placed in the protective agent c for static protection, and the static protection setting time is synchronized with the remaining time of the A probe working cycle.

[0048] Calibration cycle When the cleaning cycle of probe B is completed, the execution program is suspended and the system enters the calibration cycle determination. The calibration cycle of probes A and B is set by the PLC control platform. Generally, the setting time of the two is the same, and they can also be set separately according to the needs of the site. The calibration cycle is not less than the set working cycle. In this example, it is set to 120h.

[0049] When the system determines that the calibration cycle timing of probe B is greater than or equal to the set cycle time, the calibration cycle continues; when the system determines that the calibration cycle timing of probe B is less than the set cycle time, the maintenance cycle continues.

[0050] The early calibration judgment mode can be set through the PLC control platform. In this mode, when the system determines that the remaining time of the set calibration cycle is less than the set working cycle, the system will perform the calibration cycle in advance.

[0051] The calibration cycle of the present invention includes the following steps 1 to 6.

[0052] Step 1: The calibration agent 1d control is started, the calibration agent 1d delivery metering device P2 is turned on, and the calibration agent 1d is pumped into the cyclone cleaning device 5. After reaching the set metering value, the calibration agent 1d delivery metering device P2 is stopped, and the calibration agent 1d control is stopped.

[0053] Step 2: The pH sensor probe 3 is placed in the calibration agent for 1 day to stabilize. After the set stabilization time is reached, the PLC automatically reads the measurement data and performs calibration operations on the probe.

[0054] Step 3. Perform steps 7 to 10 in the cleaning cycle.

[0055] Step 4: The calibration agent 2e control is started, and the calibration agent 2e delivery metering device P3 is turned on to pump the calibration agent 2e into the cyclone cleaning device 5. After reaching the set metering value, the calibration agent 2e delivery metering device P3 is stopped, and the calibration agent 2e control is stopped.

[0056] Step 5: The pH sensor probe 3 is placed in the calibration agent 2e to stabilize. After the set stabilization time is reached, the PLC automatically reads the measurement data and performs calibration operations on the probe.

[0057] Step 6. Perform steps 7 to 10 in the cleaning cycle.

[0058] Working cycle After the cleaning cycle, maintenance cycle or calibration cycle is completed, the working cycle continues. The working cycle of the present invention includes the following steps 1 to 3.

[0059] Step 1, the cut-off valve 6 is controlled to start, the cut-off valve 6 is opened, and after it is fully opened, the cut-off valve 6 is controlled to stop.

[0060] Step 2, the telescopic rod 1 is controlled to start, the telescopic part of the telescopic rod 1 extends downward, and pushes the pH sensor probe 3 downward. After the probe is immersed in the liquid to be tested to a set depth, the telescopic rod 1 is controlled to stop.

[0061] Step 3: The PLC controller 11 transmits a pH sensor start signal, the pH sensor probe is marked as working, and the pH detection value starts to be uploaded.

[0062] In the present invention, the cleaning cycle, maintenance cycle, calibration cycle, and working cycle can be used in a custom combination on the control end platform according to on-site requirements, and the set value parameters in each cycle can also be custom adjusted.

[0063] In the present invention, a dual pH sensor monitoring and automatic cleaning, calibration and maintenance device system is adopted. By installing 2 sets of pH sensors and 2 sets of pH sensor probe automatic cleaning, calibration and maintenance devices at a single pH monitoring point, and adapting a PLC control system, automatic cleaning, calibration and maintenance of the pH sensor probe under continuous pH monitoring at the monitoring point can be achieved.

[0064] The two pH sensor probes enter the working cycle alternately. According to the set working cycle of the pH sensor probes, when one of the pH sensor probes (referred to as probe A) enters the working state through the working cycle, the other pH sensor probe (referred to as probe B) will successively perform the cleaning cycle and the maintenance cycle, and perform the calibration cycle according to the set time judgment. The specific method is explained in the following example: Probe B is set to be in working state, and probe A is in a state of waiting for continuous circulation or working after the maintenance cycle is completed.

[0065] Step 1: After probe B reaches the set working cycle, probe A starts the working cycle and probe B enters the cleaning cycle waiting state. Step 2, when step 2 of the working cycle of probe A is completed, that is, the telescopic rod 1 is controlled to stop, probe B starts the cleaning cycle, and synchronously executes step 2 of the cleaning cycle (PLC controller 11 transmits a pH sensor stop signal, the pH sensor probe is marked as non-working state, and the measured value stops uploading), synchronously, probe A executes step 3 of the working cycle to complete the alternation of the working states of the dual pH sensor probes.

[0066] Step 3: Probe B performs a subsequent cleaning cycle. After the cleaning cycle is completed, a maintenance cycle is started or a calibration cycle is inserted according to the set cycle timing.

[0067] Step 4: According to the set working cycle, the above steps are repeated to achieve online cleaning, calibration and maintenance of the pH sensor probe under the pH continuous monitoring state.

[0068] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pH sensor probe automatic cleaning, calibration and maintenance device system, characterized in that: Including pH sensor probe automatic cleaning, calibration and maintenance device, medium delivery pipeline system and PLC controller, The pH sensor probe automatic cleaning, calibration and maintenance device comprises a telescopic rod (1), a pH sensor probe (3), a cleaning container (4), a cyclone cleaner (5), a cut-off valve (6), a medium discharge port (7), and a device integrated protective cover (10). The bottom of the telescopic part of the telescopic rod (1) is connected to the pH sensor probe (3), the cleaning container (4), the cyclone cleaner (5), the cut-off valve (6), and the medium outlet (7) are connected in sequence from top to bottom to form a channel, and the fixed part of the telescopic rod (1) is connected to the device integrated protective cover (10). The medium delivery pipeline system is connected to the pipeline of the cyclone cleaner (5) and is used to provide the cyclone cleaner (5) with a variety of media for cleaning, calibrating and maintaining the pH sensor probe. The pH sensor probe is arranged in a through-channel manner, and has a working state in which it extends out of the medium discharge port (7) and a cleaning, calibration and maintenance state in which it is retracted above the cut-off valve (6). When the pH sensor probe is in the cleaning, calibration and maintenance state, the cut-off valve (6) is closed to form a space required for the cleaning, calibration and maintenance state.

2. The pH sensor probe automatic cleaning, calibration and maintenance device system according to claim 1, characterized in that: The medium delivery pipeline system includes a common delivery pipeline for cleaning agent, flushing agent and protective agent, a delivery pipeline for calibrating agent 1, a delivery pipeline for calibrating agent 2, and a delivery pipeline for compressed air, wherein all delivery pipelines are equipped with control valves, and the common delivery pipeline, the delivery pipeline for calibrating agent 1, and the delivery pipeline for calibrating agent 2 are each equipped with a delivery metering device.

3. The pH sensor probe automatic cleaning, calibration and maintenance device system according to claim 1, characterized in that: The cleaning container (4) is cylindrical and has an open top.

4. The pH sensor probe automatic cleaning, calibration and maintenance device system according to claim 1, characterized in that: Includes automatic cleaning, calibration and maintenance of a single pH sensor probe.

5. The pH sensor probe automatic cleaning, calibration and maintenance device system according to claim 1, characterized in that: The invention comprises a dual pH sensor probe automatic cleaning, calibration and maintenance device and a dual device connector (9) arranged at a single monitoring point, wherein one of the dual pH sensor probe automatic cleaning, calibration and maintenance device is in a working position and the other is in a maintenance position, and the two work alternately.

6. The pH sensor probe automatic cleaning, calibration and maintenance device system according to claim 1, characterized in that: The cyclone cleaner (5) has four holes opened at set positions, which are respectively connected to the common delivery pipeline, the calibration agent 1 delivery pipeline, the calibration agent 2 delivery pipeline, and the compressed air delivery pipeline.

7. The pH sensor probe automatic cleaning, calibration and maintenance device system according to claim 1, characterized in that: The PLC controller (11) is used to control the automatic cleaning cycle, automatic calibration cycle, automatic maintenance cycle and automatic working cycle of the pH sensor probe.

8. The pH sensor probe automatic cleaning, calibration and maintenance device system according to claim 1, characterized in that: The telescopic part of the telescopic rod (1) is connected to the pH sensor probe via a connector (2), and the fixed part of the telescopic rod (1) is connected to a device integrated protective cover (10) via a telescopic rod connector (8).

9. The pH sensor probe automatic cleaning, calibration and maintenance device system according to claim 7, characterized in that: The method for cleaning the pH sensor probe in the automatic cleaning cycle includes: S1, pumping cleaning agent a into the cyclone cleaning device (5), and after reaching the set metering value, placing the pH sensor probe (3) in a static soaking state of the cleaning agent a; S2. During the set static soaking time, the compressed air control is periodically started, so that the compressed air is pressed into the cyclone cleaner (5), and contacts the cleaning agent a through the guide groove to form a directional cyclone, thereby cleaning the pH sensor probe (3).

10. The pH sensor probe automatic cleaning, calibration and maintenance device system according to claim 9, characterized in that: The method for cleaning the pH sensor probe in the automatic cleaning cycle also includes: S3. After the cleaning with cleaning agent a is completed, the flushing agent is replaced and flushing agent b is pumped into the cyclone cleaning device (5) until the set metering value is reached. S4, the compressed air control is started, and the compressed air is pressed into the cyclone cleaning device (5), and contacts with the cleaning agent a through the guide groove to form a directional cyclone, so as to clean the pH sensor probe (3).

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