A pH sampling and detection device and method for flushing deionized water in carbon steel storage tanks

Abstract

A pH sampling and detection device and method for flushing deionized water in a carbon steel storage tank, relating to the technical field of pH detection of deionized water. In order to solve the problem of inaccurate data caused by pH detection by one probe, a locking component is pushed upward by moving a buoyancy disc to expose the pH detection probe, and multiple pH detection probes are used to detect water. At the same time, after the initial detection of the pH detection probe, the sampling water continues to be injected. At this time, the buoyancy disc will push the locking component to drive the transmission column to move upward, and at this time, the center rod is driven to rotate under the restriction of the limiting bead and the lower ring groove. At this time, the pH detection probe rotates 90 degrees. Since the straight groove does not rotate, the secondary detection is suspended. As the transmission column continues to move upward, when the upper ring groove matches the limiting bead, the pH detection probe continues to rotate 90 degrees and performs three detections. Not only does it increase the detection sites and improve the detection accuracy, but also the data of different sites will change during the rotation process, and it is also easy to compare the pH detection probe data and determine whether it is damaged by the data difference.

Description

Technical Field

[0001] The invention relates to the technical field of deionized water pH detection, and in particular to a pH sampling and detection device and method for deionized water used for flushing carbon steel storage tanks. Background Art

[0002] The chemical property of hexamethylenediamine is that it is soluble in paint, but less corrosive to carbon steel. Therefore, it is feasible to use carbon steel tanks without internal corrosion protection to store hexamethylenediamine. The main problem is that carbon steel tanks have no internal corrosion protection, and a large amount of rust will be generated on the inner wall of the tank, which cannot meet the cleanliness requirements. In response to this problem, the operation team of Jiangsu Yangjing Chemical Storage Co., Ltd. has developed high-pressure water cleaning + nitrogen replacement + tank heating + deionized water cleaning + deionized water testing + deionized water removal technology. The core of the technology is to use deionized water instead of hexamethylenediamine to clean the inner wall of the carbon steel tank in a heated nitrogen environment, and test the appearance, pH value, transmittance, color number, and conductivity of the discharged deionized water to determine whether the cleanliness of the tank meets the requirements. The specific indicators are that the deionized water has a clear and transparent appearance without visible impurities, a pH value in the range of 4.5-8.5, a transmittance in the range of 95-100, a color number less than 5, and a conductivity less than 20us / cm to determine that the tank has the conditions for storing hexamethylenediamine. The high-pressure water cleaning stage requires that the high-pressure water pressure is not less than 100Mpa to ensure that the rust on the steel plate can be removed cleanly. The high-pressure water cleaning time is controlled within 72 hours to prevent the ring plate from generating a large amount of rust in the previous flushing. After the high-pressure water flushing is completed, the storage tank should be immediately replaced with nitrogen to reduce the oxygen content in the storage tank to below 2% within 24 hours. At the same time, the heater of the storage tank is put into use to increase the temperature in the storage tank to above 45°C. During the nitrogen replacement, a tank cleaning machine is installed on the top of the storage tank, and the storage tank is cleaned with deionized water. The deionized water is taken from the dehydration port for analysis. After the analysis is qualified, the deionized water is removed. The storage tank can meet the storage conditions of hexamethylenediamine after the small amount of residual deionized water in the tank is removed by nitrogen replacement and tank heating.

[0003] The prior art discloses a device for detecting the pH value of flowing wastewater, with the announcement number CN117741082A, comprising a circulation pool, an inlet pipe for introducing the wastewater to be tested into the circulation pool, a sewage pipe for discharging the sediment in the circulation pool, an overflow pipe for ensuring the circulation of the wastewater in the circulation pool, a pH sensor for detecting the pH value of the wastewater in the circulation pool, and a flushing mechanism for cleaning the probe of the pH sensor, wherein the flushing mechanism has a timed flushing function. The present invention divides a branch on the main pipeline for circulating acidic wastewater through the inlet pipe, and leads the wastewater to the circulation pool, so as to solve the problem of alleviating the adverse effect of excessively fast water flow on the main pipeline on the service life of the pH sensor probe, so that the measuring medium in the circulation pool can be kept circulating under a stable state, thereby ensuring the timeliness of the measurement and extending the service life of the probe.

[0004] However, the above-mentioned prior art has a probe for pH detection, and the pH value data varies at different water level positions, which may easily lead to inaccurate data. Moreover, if the probe is slightly damaged, the detection data may be erroneous. Due to the lack of comparison, it may easily lead to data judgment errors and cause losses.

[0005] Therefore, a pH sampling and detection device and method for flushing deionized water in a carbon steel storage tank is needed. Summary of the invention

[0006] In order to solve all or part of the above problems, the purpose of the present invention is to provide a pH sampling and detection device and method for deionized water flushing in carbon steel storage tanks, so as to solve the problem that one probe is used for pH detection, resulting in inaccurate data, and if the probe is slightly damaged, resulting in errors in the detection data. Due to the lack of comparison, it is easy to cause data judgment errors and cause losses.

[0007] To achieve the above object, the present invention provides the following technical solutions: A pH sampling and detection device for flushing deionized water in a carbon steel storage tank, comprising a sampling component and a cleaning component arranged in the middle of the sampling component, a detection component is arranged in the middle of the inner side of the sampling component, and an automatic dust prevention component is arranged on the outer side of the detection component, wherein the cleaning component comprises a buoyancy disk and a telescopic rod installed at the upper end of the buoyancy disk;

[0008] The detection assembly includes a center rod and a PH detection probe fixedly arranged on the outside of the center rod. At least two PH detection probes are arranged. A guide column is arranged between the center rod and the transmission column. The guide column is provided with a lower ring groove, a straight groove and an upper ring groove from bottom to top. A limiting bead is arranged on the inner side of the lower end of the transmission column.

[0009] Furthermore, the sampling assembly includes a shell and a cover plate connected to the upper end of the shell by screws, a water inlet pipe is provided through the lower end of the outer side of the shell, and a drain pipe is provided at the lower end of the shell.

[0010] Furthermore, a water inlet pipe is provided at the upper end of the telescopic rod, and the water inlet pipe passes through the cover plate. A water storage tank is opened in the middle of the buoyancy disk, and the water storage tank is connected to the telescopic rod. A plurality of internal water spray holes are opened in the middle of the buoyancy disk, and the internal water spray holes are connected to the water storage tank.

[0011] Furthermore, the buoyancy disk is provided with a plurality of external water spray holes, which are connected to the water storage tank.

[0012] Furthermore, the automatic dustproof assembly includes a linkage rod and a dustproof block installed on one side of the linkage rod, the dustproof block matches the PH detection probe, at least two dustproof blocks are provided, and an upper stopper is fixedly provided on one side of the upper end of the linkage rod.

[0013] Furthermore, an upper slot is provided on the upper side of the buoyancy disk, a lower slot is provided on the lower side of the buoyancy disk, an upper stopper matches the upper slot, a locking assembly is provided on the other side of the upper end of the linkage rod, a lower stopper is provided on one side of the lower end of the linkage rod, and the lower stopper matches the lower slot.

[0014] Furthermore, the locking assembly includes a connecting column and a return spring fixedly arranged on one side of the connecting column, one end of the return spring is fixedly connected to the linkage rod, and one end of the connecting column away from the return spring is movably embedded with a ball.

[0015] Furthermore, a swivel is provided at the lower end of the central rod, and the swivel is movably connected to the bottom of the shell.

[0016] Furthermore, a transmission column is arranged at the upper end of the central rod, a lower groove and an upper groove are opened on the inner side of the transmission column, and the ball matches the lower groove or the upper groove.

[0017] Another technical solution proposed by the present invention is to provide an implementation method of a pH sampling and detection device for flushing deionized water in a carbon steel storage tank, comprising the following steps:

[0018] S1: The input end of the water pump is inserted into the dehydration port to discharge the sampled water. The water collected by the water pump is transported to the water inlet pipe, so that the water inside the shell continues to rise;

[0019] S2: After the initial inspection of the PH detection probe, continue to inject sampling water. At this time, the buoyancy disc will push the locking assembly to drive the transmission column to move upward. At this time, the center rod is driven to rotate under the restriction of the limiting bead and the lower ring groove, so that the PH detection probe rotates until it rotates to the straight groove. There is no need to stop the water. At this time, the PH detection probe rotates 90°. Since the straight groove is no longer rotating, the secondary detection is suspended. As the transmission column continues to move upward, when the upper ring groove matches the limiting bead, the PH detection probe continues to rotate 90° and performs the third detection;

[0020] S3: When the test is completed, the test water is discharged and the buoyancy plate moves downward. At the same time, the clean water delivery pump delivers clean water to the inside of the buoyancy plate and enters the water storage tank. The water inside the water storage tank is sprayed out from the inner spray hole to clean the test component and the automatic dustproof component, that is, to clean the PH test probe. At the same time, the water sprayed from the outer spray hole cleans the inside of the shell.

[0021] S4: The lower stopper matches the lower slot, driving the linkage rod to move downward, so that the dust block covers the pH detection probe.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention proposes a pH sampling and detection device and method for flushing deionized water in a carbon steel storage tank. The buoyancy disk moves upward to push the locking component to expose the pH detection probe. At this time, the sampled water stops being transported, and multiple pH detection probes detect the water. The data is diversified and the accuracy is stable. Moreover, after a single pH detection probe is damaged, there will be abnormal comparison, which will not cause data judgment errors and avoid losses. At the same time, after the pH detection probe is initially inspected, the sampling water continues to be injected. At this time, the buoyancy disk will push the locking component to drive the transmission column to move upward. At this time, the center rod is driven to rotate under the restriction of the limiting bead and the lower ring groove, so that the pH detection probe rotates until it rotates to the straight groove without stopping the water. At this time, the pH detection probe rotates 90°. Since the straight groove is no longer rotating, the secondary detection is suspended. As the transmission column continues to move upward, when the upper ring groove matches the limiting bead, the pH detection probe continues to rotate 90° and performs three detections. Not only does it increase the detection sites and improve the detection accuracy, but also the data at different sites will change during the rotation process, and it is also easy to compare the pH detection probe data and determine whether it is damaged by data differences. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The overall three-dimensional structure of the pH sampling and detection device for flushing deionized water in a carbon steel storage tank according to the present invention is shown in FIG. Figure 1 ;

[0025] Figure 2 The overall three-dimensional structure of the pH sampling and detection device for flushing deionized water in a carbon steel storage tank according to the present invention is shown in FIG. Figure 2 ;

[0026] Figure 3 It is a schematic diagram of the internal planar structure of the pH sampling and detection device for flushing deionized water in a carbon steel storage tank according to the present invention;

[0027] Figure 4 The cleaning component of the pH sampling and detection device for flushing deionized water in a carbon steel storage tank according to the present invention

[0028] Schematic diagram of the three-dimensional structure of the automatic dust-proof component;

[0029] Figure 5 This is a schematic diagram of the top plan structure of a cleaning component of a pH sampling and detection device for flushing deionized water in a carbon steel storage tank according to the present invention;

[0030] Figure 6 Schematic diagram of the three-dimensional structure of the detection component of the pH sampling and detection device for flushing deionized water in carbon steel storage tanks according to the present invention Figure 1 ;

[0031] Figure 7 Schematic diagram of the three-dimensional structure of the detection component of the pH sampling and detection device for flushing deionized water in carbon steel storage tanks according to the present invention Figure 2 ;

[0032] Figure 8 It is a schematic diagram of the three-dimensional structure of the automatic dust-proof component of the pH sampling and detection device for flushing deionized water in a carbon steel storage tank according to the present invention;

[0033] Fig. 9 The present invention is a PH sampling and detection device for flushing deionized water in a carbon steel storage tank Figure 3 A is an enlarged structural diagram of FIG.

[0034] In the figure:

[0035] 1. Sampling assembly; 11. Shell; 12. Cover; 13. Water inlet pipe; 14. Drain pipe; 2. Cleaning assembly; 21. Buoyancy disc; 211. Upper card slot; 212. Lower card slot; 213. Water storage tank; 214. Inner water spray hole; 215. Outer water spray hole; 22. Telescopic rod; 23. Water inlet pipe; 3. Automatic dustproof assembly; 31. Linkage rod; 32. Dustproof block; 33. Upper block; 34. Lock Dead component; 341, connecting column; 342, reset spring; 343, ball; 35, lower stopper; 4, detection component; 41, center rod; 411, swivel; 42, PH detection probe; 43, conductivity detection probe; 44, transmission column; 441, lower groove; 442, upper groove; 443, limiting bead; 45, guide column; 451, lower ring groove; 452, straight groove; 453, upper ring groove. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] like Figure 1-Figure 3 As shown, a pH sampling and detection device for flushing deionized water in a carbon steel storage tank includes a sampling component 1 and a cleaning component 2 arranged in the middle of the sampling component 1, a detection component 4 is arranged in the middle of the inner side of the sampling component 1, and an automatic dust prevention component 3 is arranged on the outer side of the detection component 4.

[0038] like Figure 2 As shown, the sampling assembly 1 includes a shell 11 and a cover plate 12 connected to the upper end of the shell 11 by screws. A water inlet pipe 13 is provided through the lower end of the outer side of the shell 11. The water inlet pipe 13 is externally connected to a water pump. The input end of the water pump is inserted into a dehydration port for discharging the sampled water. The water is collected by the water pump and transported to the water inlet pipe 13, so that the water inside the shell 11 continues to rise. A drain pipe 14 is provided at the lower end of the shell 11. When the detection is completed, the detected water is discharged through the drain pipe 14.

[0039] like Figure 4-Figure 5 As shown, the cleaning assembly 2 includes a buoyancy disk 21 and a telescopic rod 22 installed at the upper end of the buoyancy disk 21. As the water inside the shell 11 continues to rise, the buoyancy disk 21 continues to move upward due to the buoyancy of the water. A water inlet pipe 23 is provided at the upper end of the telescopic rod 22. The water inlet pipe 23 passes through the cover plate 12. The input end of the water inlet pipe 23 is externally connected to a clean water delivery pump. The clean water is delivered to the telescopic rod 22 through the water inlet pipe 23 and enters the interior of the buoyancy disk 21.

[0040] like Figure 4-Figure 5 As shown, a water storage tank 213 is provided in the middle of the buoyancy disk 21, and the water storage tank 213 is connected to the telescopic rod 22. A plurality of inner water spray holes 214 are provided in the middle of the buoyancy disk 21, and the inner water spray holes 214 are connected to the water storage tank 213. A plurality of outer water spray holes 215 are also provided on the buoyancy disk 21, and the outer water spray holes 215 are connected to the water storage tank 213.

[0041] When the detection is completed, the detection water is discharged and the buoyancy disk 21 moves downward. At the same time, the clean water delivery pump delivers clean water to the inside of the buoyancy disk 21 and enters the water storage tank 213. The water in the water storage tank 213 is sprayed out from the inner water spray hole 214 to clean the detection component 4 and the automatic dustproof component 3, that is, to clean the PH detection probe 42 and the conductivity detection probe 43. At the same time, the water sprayed from the outer water spray hole 215 cleans the inside of the shell 11, which not only makes the surface of the PH detection probe 42 and the conductivity detection probe 43 clean, so that the data detection is still accurate after long-term use, but also cleans the inside of the shell 11, reducing the trouble of manual cleaning and ensuring the cleanliness of the inside of the shell 11.

[0042] like Figure 4-Figure 8 As shown, the automatic dustproof component 3 includes a linkage rod 31 and a dustproof block 32 installed on one side of the linkage rod 31, the dustproof block 32 matches the PH detection probe 42 and the conductivity detection probe 43, at least two dustproof blocks 32 are provided, an upper stopper 33 is fixedly provided on one side of the upper end of the linkage rod 31, an upper card slot 211 is provided on the upper side of the buoyancy disk 21, a lower card slot 212 is provided on the lower side of the buoyancy disk 21, the upper stopper 33 matches the upper card slot 211, a locking component 34 is provided on the other side of the upper end of the linkage rod 31, a lower stopper 35 is provided on one side of the lower end of the linkage rod 31, and the lower stopper 35 matches the lower card slot 212;

[0043] As the buoyancy disk 21 moves upward, the upper stopper 33 matches with the upper slot 211, thereby driving the linkage rod 31 to move upward, so that the dust block 32 moves upward to expose the pH detection probe 42 and the conductivity detection probe 43 to detect the water. When the buoyancy disk 21 moves downward, the lower stopper 35 matches with the lower slot 212, driving the linkage rod 31 to move downward, so that the dust block 32 covers the pH detection probe 42 and the conductivity detection probe 43 to prevent the pH detection probe 42 and the conductivity detection probe 43 from being contaminated by the outside world, thereby ensuring the long-term use of the pH detection probe 42 and the conductivity detection probe 43. Moreover, the whole process is automated, and there is no need for manual opening and closing operations. The structure is simple, practical and convenient.

[0044] like Figure 8-Figure 9 As shown, the locking assembly 34 includes a connecting column 341 and a return spring 342 fixedly arranged on one side of the connecting column 341, one end of the return spring 342 is fixedly connected to the linkage rod 31, and the end of the connecting column 341 away from the return spring 342 is movably embedded with a ball 343, and the ball 343 facilitates the sliding of the entire locking assembly 34, and the return spring 342 makes the locking assembly 34 have a certain locking force, thereby ensuring that the automatic dustproof assembly 3 will not move in the locked state, thereby ensuring the use effect.

[0045] like Figure 4-Figure 9 As shown, the detection assembly 4 includes a central rod 41 and a PH detection probe 42 and a conductivity detection probe 43 fixedly arranged on the outside of the central rod 41. The wires of the PH detection probe 42 and the conductivity detection probe 43 pass through the central rod 41 and are connected to the external controller point. At least two PH detection probes 42 and conductivity detection probes 43 are provided. A swivel 411 is provided at the lower end of the central rod 41. The swivel 411 is movably connected to the bottom of the housing 11. A transmission column 44 is provided at the upper end of the central rod 41. A lower groove 441 is provided on the inner side of the transmission column 44. And the upper groove 442, the ball 343 matches the lower groove 441 or the upper groove 442, the reset force of the reset spring 342 is less than the gravity of the transmission column 44, and when the buoyancy disk 21 moves upward, it will preferentially drive the locking assembly 34 from the lower groove 441 into the upper groove 442, and then drive the transmission column 44 to move upward. A guide column 45 is arranged between the center rod 41 and the transmission column 44, and the guide column 45 is successively provided with a lower annular groove 451, a straight groove 452 and an upper annular groove 453 from bottom to top, and a limiting bead 443 is arranged on the inner side of the lower end of the transmission column 44.

[0046] The buoyancy disc 21 moves upward to push the locking assembly 34 so that the PH detection probe 42 and the conductivity detection probe 43 are exposed. At this time, the sampled water stops being transported. Multiple PH detection probes 42 and conductivity detection probes 43 detect the water, and the data is diversified and the accuracy is stable. Moreover, when a single PH detection probe 42 and conductivity detection probe 43 is damaged, there will be abnormal comparison, which will not cause data judgment errors and avoid losses. At the same time, after the initial inspection of the PH detection probe 42 and the conductivity detection probe 43, the sampled water continues to be injected. At this time, the buoyancy disc 21 will push the locking assembly 34 to drive the transmission column 44 to move upward. At this time, the center rod 41 is driven to rotate under the restriction of the limiting bead 443 and the lower ring groove 451. The PH detection probe 42 and the conductivity detection probe 43 rotate by 90° until they rotate to the straight groove 452 without stopping the water supply. At this time, the PH detection probe 42 and the conductivity detection probe 43 rotate by 90°. Since the straight groove 452 is no longer rotating, the secondary detection is suspended. As the transmission column 44 continues to move upward, when the upper ring groove 453 matches the limiting bead 443, the PH detection probe 42 and the conductivity detection probe 43 continue to rotate by 90° and perform three detections. This not only increases the detection sites and improves the detection accuracy, but also the data at different sites will change during the rotation process, and it is also easy to compare the data of the PH detection probe 42 and the conductivity detection probe 43 to determine whether they are damaged based on the data difference.

[0047] Another technical solution proposed by the present invention is to provide an implementation method of a pH sampling and detection device for flushing deionized water in a carbon steel storage tank, comprising the following steps:

[0048] Step 1: The input end of the water pump is inserted into the dehydration port to discharge the sampled water, and the water is collected by the water pump and transported to the water inlet pipe 13, so that the water inside the housing 11 continues to rise;

[0049] Step 2: After the initial inspection of the PH detection probe 42 and the conductivity detection probe 43, continue to inject sampling water. At this time, the buoyancy disk 21 will push the locking assembly 34 to drive the transmission column 44 to move upward. At this time, the center rod 41 is driven to rotate under the restriction of the limiting bead 443 and the lower ring groove 451, so that the PH detection probe 42 and the conductivity detection probe 43 rotate until they rotate to the straight groove 452. There is no need to stop the water supply. At this time, the PH detection probe 42 and the conductivity detection probe 43 rotate 90°. Since the straight groove 452 is no longer rotating, the secondary detection is suspended. As the transmission column 44 continues to move upward, when the upper ring groove 453 matches the limiting bead 443, the PH detection probe 42 and the conductivity detection probe 43 continue to rotate 90° to perform a third detection;

[0050] Step 3: After the detection is completed, the detection water is discharged. At this time, the buoyancy disk 21 moves downward, and at the same time, the clean water delivery pump delivers clean water to the inside of the buoyancy disk 21 and enters the inside of the water storage tank 213. The water inside the water storage tank 213 is sprayed out from the inner spray hole 214 to clean the detection component 4 and the automatic dustproof component 3, that is, to clean the pH detection probe 42 and the conductivity detection probe 43. At the same time, the water sprayed from the outer spray hole 215 cleans the inside of the housing 11;

[0051] Step 4: The lower stopper 35 matches the lower slot 212 , driving the linkage rod 31 to move downward, so that the dustproof block 32 covers the pH detection probe 42 and the conductivity detection probe 43 .

[0052] It should be noted that, in the description of the present application, it should be understood that the terms "length", "thickness", "inside", "outside", "axial", "radial", etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0053] In addition, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises", or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pH sampling and detection device for flushing deionized water in a carbon steel storage tank, comprising a sampling component (1) and a cleaning component (2) arranged in the middle of the sampling component (1), a detection component (4) arranged in the middle of the inner side of the sampling component (1), and an automatic dust prevention component (3) arranged on the outer side of the detection component (4), characterized in that: The cleaning assembly (2) comprises a buoyancy disc (21) and a telescopic rod (22) mounted on the upper end of the buoyancy disc (21); The detection assembly (4) comprises a central rod (41) and a PH detection probe (42) fixedly arranged on the outside of the central rod (41), at least two PH detection probes (42) are arranged, a guide column (45) is arranged between the central rod (41) and the transmission column (44), the guide column (45) is provided with a lower annular groove (451), a straight groove (452) and an upper annular groove (453) in sequence from bottom to top, and a limiting bead (443) is arranged on the inner side of the lower end of the transmission column (44); The automatic dustproof component (3) comprises a linkage rod (31) and a dustproof block (32) mounted on one side of the linkage rod (31); the dustproof block (32) matches the PH detection probe (42); at least two dustproof blocks (32) are provided; an upper stopper (33) is fixedly provided on one side of the upper end of the linkage rod (31); An upper groove (211) is provided on the upper side of the buoyancy disc (21), a lower groove (212) is provided on the lower side of the buoyancy disc (21), an upper stopper (33) matches the upper groove (211), a locking assembly (34) is provided on the other side of the upper end of the linkage rod (31), a lower stopper (35) is provided on one side of the lower end of the linkage rod (31), and the lower stopper (35) matches the lower groove (212); The locking assembly (34) comprises a connecting column (341) and a return spring (342) fixedly arranged on one side of the connecting column (341), one end of the return spring (342) is fixedly connected to the linkage rod (31), and one end of the connecting column (341) away from the return spring (342) is movably embedded with a ball (343); A swivel (411) is provided at the lower end of the central rod (41), and the swivel (411) is movably connected to the bottom of the housing (11); A transmission column (44) is provided at the upper end of the center rod (41), a lower groove (441) and an upper groove (442) are provided on the inner side of the transmission column (44), and the ball (343) matches the lower groove (441) or the upper groove (442).

2. A pH sampling and detection device for flushing deionized water in a carbon steel storage tank as claimed in claim 1, characterized in that: The sampling assembly (1) comprises a housing (11) and a cover plate (12) connected to the upper end of the housing (11) by means of screws; a water inlet pipe (13) is provided through the lower end of the outer side of the housing (11); and a drainage pipe (14) is provided at the lower end of the housing (11).

3. A pH sampling and detection device for flushing deionized water in a carbon steel storage tank as claimed in claim 2, characterized in that: A water inlet pipe (23) is provided at the upper end of the telescopic rod (22), and the water inlet pipe (23) passes through the cover plate (12). A water storage tank (213) is provided in the middle of the buoyancy disk (21), and the water storage tank (213) is connected to the telescopic rod (22). A plurality of inner water spray holes (214) are provided in the middle of the buoyancy disk (21), and the inner water spray holes (214) are connected to the water storage tank (213).

4. A pH sampling and detection device for flushing deionized water in a carbon steel storage tank as claimed in claim 3, characterized in that: The buoyancy disk (21) is also provided with a plurality of external water spray holes (215), and the external water spray holes (215) are connected to the water storage tank (213).

5. The implementation method of the pH sampling and detection device for flushing deionized water in a carbon steel storage tank as claimed in claim 4 is characterized in that: The steps include: S1: The input end of the water pump is inserted into the dehydration port to discharge the sampled water, and the water collected by the water pump is transported to the water inlet pipe (13), so that the water inside the housing (11) continues to rise; S2: After the initial inspection of the pH detection probe (42), the sampling water is continuously injected. At this time, the buoyancy disc (21) pushes the locking assembly (34) to drive the transmission column (44) to move upward. At this time, the center rod (41) is driven to rotate under the restriction of the limiting bead (443) and the lower ring groove (451), so that the pH detection probe (42) rotates until it rotates to the straight groove (452). There is no need to stop the water supply. At this time, the pH detection probe (42) rotates 90°. Since the straight groove (452) is no longer rotating, the secondary inspection is suspended. As the transmission column (44) continues to move upward, when the upper ring groove (453) matches the limiting bead (443), the pH detection probe (42) continues to rotate 90° and performs a third inspection; S3: When the detection is completed, the detection water is discharged and the buoyancy plate (21) moves downward. At the same time, the clean water delivery pump delivers clean water to the inside of the buoyancy plate (21) and enters the inside of the water storage tank (213). The water inside the water storage tank (213) is sprayed out from the inner water spray hole (214) to clean the detection component (4) and the automatic dustproof component (3), that is, to clean the pH detection probe (42). At the same time, the water sprayed out from the outer water spray hole (215) cleans the inside of the housing (11); S4: The lower stopper (35) matches the lower slot (212), driving the linkage rod (31) to move downward, so that the dust block (32) covers the pH detection probe (42).

Images