Passivation solution blending, detecting and sampling device based on seamless steel pipe passivation treatment

Abstract

The invention relates to the technical field of passivation solution detection sampling, and discloses a seamless steel tube passivation treatment-based passivation solution blending detection sampler, which comprises a sampling bottle, a sampling unit arranged at the top of the sampling bottle, and an indicating unit arranged on the sampling unit, the sampling unit comprises a sealing assembly arranged in the top of the sampling bottle and a pushing assembly arranged at the top of the sealing assembly; the indicating unit comprises an indicating assembly arranged on the side wall of the pushing assembly and a locking assembly arranged between the indicating assembly and the pushing assembly. The to-be-detected passivation solution can be automatically taken out through the arranged sampling unit, the operation is simple and convenient, the passivation solution with the specified depth can be intuitively and accurately sampled through the arranged indicating unit, and the situation that a sampling bottle floats up and down due to man-made reasons in the sampling process, and consequently the accuracy of sampling and detection results is affected is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of passivation liquid detection sampling, in particular to a passivation liquid mixing detection sampler based on seamless steel pipe passivation treatment. Background Art

[0002] After the seamless steel pipe is passivated, a dense protective film is usually formed on the surface. This protective film has good corrosion resistance and oxidation resistance, and can effectively prevent the steel pipe from rusting again.

[0003] Passivation solution refers to the chemical solution used in the passivation treatment of seamless steel pipes. Commonly used passivation solutions mainly include chromic acid solution, sulfuric acid solution and nitric acid solution. These solutions contain metal elements such as chromium, nickel and zinc, which can form a uniform protective film on the surface of the steel pipe. When choosing a passivation solution, it is necessary to select a suitable solution according to the specific application environment and the material of the steel pipe. For example, if the application environment is relatively harsh, you may need to choose a more durable passivation solution, such as a solution containing a higher concentration of chromium ions. If the material of the steel pipe is relatively special, you may need to use a specific passivation solution for treatment.

[0004] When passivating some large seamless steel pipes, a large volume of passivation liquid needs to be prepared first. After the passivation liquid is prepared, it is often necessary to sample and test the prepared passivation liquid. Since the formula of the passivation liquid usually contains different chemical substances, these chemical substances interact with each other and produce chemical reactions, thus affecting the passivation effect. By testing the passivation liquid, we can understand whether the content and proportion of each component meet the expectations, so as to ensure that the passivation treatment effect meets the requirements, and can ensure product safety, control costs and avoid side reactions.

[0005] When sampling, in order to ensure the accuracy of the test results, sampling is generally performed at multiple points and depths. The existing technology is often unable to accurately and intuitively determine the sampling depth when sampling at multiple depths. Usually, random sampling is performed within the range of different depths by the sampling personnel themselves. The sampling is very random, making the test results inaccurate and inrepresentative. If the passivation liquid is opaque, sampling and testing at a specified depth cannot be achieved. In addition, when sampling, the sampler is prone to floating, causing samples of different depths to be mixed together, thereby affecting the test results. Summary of the invention

[0006] In view of the problem that the existing technology cannot achieve visual, accurate and stable sampling of the specified depth of the passivation liquid, a passivation liquid mixing and detection sampler based on the passivation treatment of seamless steel pipes is proposed.

[0007] Its purpose is to improve the stability during sampling, facilitate intuitive viewing of the sampling depth during sampling, and improve the accuracy of sampling test results.

[0008] The technical solution of the present invention is a sampler for preparing and testing a passivation solution based on the passivation treatment of a seamless steel pipe, comprising a sampling bottle, a sampling unit arranged on the top of the sampling bottle, and an indicating unit arranged on the sampling unit;

[0009] The sampling unit includes a sealing component arranged in the top of the sampling bottle, and a pushing component arranged on the top of the sealing component;

[0010] The indicating unit includes an indicating component arranged on the side wall of the pushing component, and a locking component arranged between the indicating component and the pushing component;

[0011] The sampling unit is used to detect and sample the passivation liquid, and the indicating unit is used to indicate the sampling depth;

[0012] The pushing assembly includes a sampling tube arranged at the top of the sampling bottle, a handle seat arranged at the top of the sampling tube, a grip arranged at the bottom of the handle seat, a pressing rod arranged in one end of the grip, a pressing plate arranged at the bottom of the pressing rod, a pushing rod arranged at the bottom of the pressing plate, a pressing spring arranged between the pressing plate and the sampling tube, the bottom of the pushing rod passes through the middle of the sampling tube, a discharge cavity is opened at the bottom of the sampling tube, and a pushing member is arranged at the bottom of the pushing rod.

[0013] Furthermore, the pushing member includes a pressing portion 1 arranged on one side of the bottom of the pushing rod, and a pressing portion 2 arranged on one side of the pressing portion 1.

[0014] Furthermore, the bottom of the first pressing part is lower than the bottom of the second pressing part, and the bottom of the second pressing part is inclined upward.

[0015] Furthermore, the sealing assembly includes a sealing hole opened at the middle position of the top of the sampling bottle and connected to the discharge chamber, a sealing groove opened at the top of the sampling bottle, a rotating rod arranged in the sealing groove, a sealing plate arranged on the rotating rod, a torsion spring arranged between the rotating rod and the sealing plate, and an extrusion inclined surface opened on one side of the sealing plate, and the downward pressing portion abuts against the extrusion inclined surface.

[0016] Furthermore, the indicating assembly includes a floating plate sleeved on the sampling tube, limiting holes symmetrically opened on the side wall of the sampling tube, two limiting blocks slidably connected in the limiting holes and fixedly connected to the floating plate, a depth line arranged on the side wall of the sampling tube, an indicating plate arranged on one side of the top of the floating plate and fitted with the side wall of the sampling tube, and an arc-shaped groove opened at the bottom of the floating plate.

[0017] Furthermore, the locking assembly includes a rotating groove opened in the sampling tube, a rotating ring arranged in the rotating groove, abutment blocks arranged in a linear array on the rotating ring, a moving rod arranged at the bottom of the rotating ring, and a movable groove opened at the top of the sealing plate, and the bottom of the moving rod passes through the top of the sampling bottle and is slidably connected to the movable groove.

[0018] Furthermore, the middle part of the rotating ring is penetrated so that the middle part of the rotating ring forms two half sectors.

[0019] Furthermore, the top annular array of the discharge chamber is provided with exhaust holes connected with the limiting holes.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The sampling unit can be used to automatically take out the passivation liquid to be tested, which is simple and convenient to operate. The indicating unit can be used to intuitively and accurately sample the passivation liquid at a specified depth, avoiding the sampling bottle from floating up and down due to human factors during sampling, thereby affecting the accuracy of sampling and test results.

[0022] 2. The rotation of the rotating ring allows the rotating groove to engage with the two limit blocks in the floating plate, so that the floating plate is abutted and locked, and the floating plate cannot move up any further, which correspondingly limits the downward movement of the sampler in the passivation liquid, that is, when sampling at a specified depth, the floating plate is automatically limited and locked. Since the sampling bottle needs to exhaust all the air in the sampling bottle to complete the complete sampling, it takes a period of time. During this process, the floating plate is limited by the sampling tube to maintain the stability of sampling at the specified depth.

[0023] 3. The setting of the indication component can realize the more intuitive sampling of the specified depth. The sampling depth is directly pointed out through the indication board, which is convenient for multiple samplings at different depths. It is different from the existing random sampling of multiple depths and has higher sampling accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall structure of the interior after sectioning of the present invention;

[0026] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0027] Figure 4 It is a schematic diagram of the overall structure of the pushing assembly of the present invention;

[0028] Figure 5 It is a schematic diagram of the overall structure of the pusher of the present invention;

[0029] Figure 6 It is a schematic diagram of the overall structure of the sealing assembly of the present invention;

[0030] Figure 7 It is a schematic diagram of the three-dimensional structure of the indicator assembly of the present invention;

[0031] Figure 8 It is a schematic diagram of the connection structure between the sealing plate, the moving rod and the rotating ring of the present invention;

[0032] Fig. 9 It is a schematic diagram of the three-dimensional structure of the rotating ring of the present invention;

[0033] Fig.10 It is a schematic diagram of the overall structure of the exhaust hole of the present invention;

[0034] Fig.11 It is a schematic diagram of the motion trajectory of the rotating ring driven by the sealing plate during the rotation of the present invention.

[0035] In the figure:

[0036] 1. Sampling bottle; 2. Pushing assembly; 21. Sampling tube; 22. Handle; 23. Pressing rod; 24. Pressing plate; 25. Pushing rod; 26. Pressing spring; 27. Exhaust chamber; 28. Pushing member; 281. Pressing part 1; 282. Pressing part 2; 3. Sealing assembly; 31. Sealing hole; 32. Sealing groove; 33. Rotating rod; 34. Sealing plate; 35. Extrusion slope; 4. Indicating assembly; 41. Floating plate; 42. Limiting hole; 43. Limiting block; 44. Depth line; 45. Indicating plate; 46. Arc groove; 5. Locking assembly; 51. Rotating groove; 52. Rotating ring; 53. Abutment block; 54. Moving rod; 55. Movable groove; 6. Exhaust hole. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0038] Example 1, reference Figure 1-Figure 4, which is the first embodiment of the present invention, provides a passivation liquid preparation and detection sampler based on seamless steel pipe passivation treatment, including a sampling bottle 1, a sampling unit installed on the top of the sampling bottle 1, and an indication unit installed on the sampling unit; the sampling unit includes a sealing component 3 installed in the top of the sampling bottle 1, and a pushing component 2 installed on the top of the sealing component 3; the indicating unit includes an indicating component 4 installed on the side wall of the pushing component 2, and a locking component 5 installed between the indicating component 4 and the pushing component 2; the sampling unit is used to detect and sample the passivation liquid, and the indicating unit is used to indicate the sampling. Sampling depth; the pushing assembly 2 includes a sampling tube 21 fixedly connected to the top of the sampling bottle 1, a handle seat fixedly connected to the top of the sampling tube 21, a grip 22 hinged at the bottom of the handle seat, a pressing rod 23 fixedly connected to one end of the grip 22, a pressing plate 24 abutting against the bottom of the pressing rod 23, a pushing rod 25 fixedly connected to the bottom of the pressing plate 24, a pressing spring 26 abutting between the pressing plate 24 and the sampling tube 21, and the bottom of the pushing rod 25 passes through the middle of the sampling tube 21, a discharge cavity 27 is provided at the bottom of the sampling tube 21, and a pushing member 28 fixedly connected to the bottom of the pushing rod 25.

[0039] Specifically, when sampling, the entire sampler is placed into the preparation container by holding the handle seat by hand. When the specified depth is reached, the handle 22 is pressed so that the handle 22 squeezes the lower pressure plate 24 through the lower pressure rod 23 when rotating. The lower pressure plate 24 drives the push rod 25 to press down and compress the lower pressure spring 26. The push rod 25 drives the push member 28 to squeeze the sealing component 3, thereby opening the sealing component 3, so that the air in the sampling bottle 1 can be connected to the outside world. At this time, the passivation liquid enters the sampling bottle 1 from the bottom of the sampling bottle 1 and discharges the air inside the sampling bottle 1. When the sampling is completed, the pressure on the handle 22 is released so that the push member 28 no longer squeezes the sealing component 3, thereby causing the sealing component 3 to automatically seal, so that the passivation liquid in the sampling bottle 1 will not flow out from the bottom. The negative pressure state inside it can make the passivation liquid to be tested be smoothly taken out, thereby realizing the sampling of the passivation liquid at the specified depth.

[0040] Reference Figure 4-Figure 5 The pushing member 28 includes a pressing portion 1 281 fixedly connected to one side of the bottom of the pushing rod 25 , and a pressing portion 282 fixedly connected to one side of the pressing portion 1 281 .

[0041] Specifically, the pushing member 28 is used to unlock the seal of the sealing assembly 3 on the sampling bottle 1. When the pushing rod 25 moves downward, the pressing portion 281 first squeezes the sealing plate 34 so that the sealing plate 34 can be rotated open. When the pressing portion 281 moves to the end of the sealing plate 34, the pressing portion 282 continues to squeeze the sealing plate 34 so that the sealing plate 34 can continue to be pushed and rotated open, thereby achieving the discharge of air inside the sampling bottle 1.

[0042] Reference Figure 5 The bottom of the first pressing part 281 is lower than the bottom of the second pressing part 282, and the bottom of the second pressing part 282 is inclined upward.

[0043] Specifically, such an arrangement allows the sealing plate 34 to be unidirectionally rotated and opened under the pressure of the lower pressure part 1 281, and the bottom of the lower pressure part 282 is inclined upward, so that after the pressure of the lower pressure part 1 281 is completed, the lower pressure part 282 can continue to push the sealing plate 34 to rotate and open.

[0044] Reference Figure 6 The sealing assembly 3 includes a sealing hole 31 opened at the middle position of the top of the sampling bottle 1 and connected to the discharge chamber 27, a sealing groove 32 opened at the top of the sampling bottle 1, a rotating rod 33 fixedly connected to the sealing groove 32, a sealing plate 34 rotatably connected to the rotating rod 33, a torsion spring abutting between the rotating rod 33 and the sealing plate 34, and an extrusion inclined surface 35 opened on one side of the sealing plate 34, and the lower pressing portion 281 abuts against the extrusion inclined surface 35.

[0045] Specifically, the sealing component 3 is used to seal the sampling bottle 1 in the initial state, so that the sampling bottle 1 is first filled with air. When the sampling bottle 1 reaches the specified depth, the sealing component 3 is opened to discharge the air in the sampling bottle 1 from the sealing hole 31, and the passivation liquid can enter from the bottom of the sampling bottle 1 to fill the sampling bottle 1 and complete the sampling at the specified depth. When the push rod 25 drives the push member 28 to move downward, the lower pressing part 281 presses against the extrusion slope 35, so that the entire sealing plate 34 rotates by twisting the torsion spring (the torsion spring in the figure is the prior art and is not drawn). When the torsion spring is in the initial state, the sealing plate 34 can block the sealing hole 31. The rest of the structure is the same as that of Example 1.

[0046] Example 2, reference Figure 1-Figure 7 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the indicating assembly 4 includes a floating plate 41 sleeved on the sampling tube 21, limiting holes 42 symmetrically opened on the side wall of the sampling tube 21, two limiting blocks 43 slidably connected in the limiting holes 42 and fixedly connected to the floating plate 41, a depth line 44 set on the side wall of the sampling tube 21, an indicating plate 45 installed on one side of the top of the floating plate 41 and in contact with the side wall of the sampling tube 21, and an arc-shaped groove 46 opened at the bottom of the floating plate 41.

[0047] Specifically, the indicating assembly 4 is used to indicate the depth of the sampler's descent when the sampler is sampling, and the depth of the mouth of the sampling bottle 1 can be directly read, which is convenient for accurate sampling at different depths. The floating plate 41 is in close contact with the top of the sampling bottle 1 in the initial state. When the sampling bottle 1 is completely immersed in the passivation solution, at this time, the initial scale indicated by the indicating plate 45 is the height of the sampling bottle 1 (that is, the height of the mouth of the bottom of the sampling bottle 1 from the horizontal plane of the passivation solution after the sampling bottle 1 is immersed in the passivation solution). When the sampler continues to be pushed into the passivation solution, the two limit blocks 43 move upward in the limit hole 42. As the sampling bottle 1 slowly moves downward, the floating plate 41 is located on the horizontal plane, so that the indicating plate 45 slowly rises, and the corresponding depth line 44 is the depth of the sampling bottle 1 sampling. In this way, the sampling depth of the sampling bottle 1 can be accurately judged, making the multiple test results more accurate.

[0048] Reference Figure 1-Figure 11 The locking assembly 5 includes a rotating groove 51 opened in the sampling tube 21, a rotating ring 52 rotatably connected to the rotating groove 51, an abutment block 53 fixedly connected to the rotating ring 52 in a linear array, a moving rod 54 fixedly connected to the bottom of the rotating ring 52, and a movable groove 55 opened at the top of the sealing plate 34, and the bottom of the moving rod 54 passes through the top of the sampling bottle 1 and is slidably connected to the movable groove 55.

[0049] Specifically, when the sealing plate 34 is driven to rotate, the movable groove 55 on the sealing plate 34 drives the moving rod 54 to rotate, and the moving rod 54 drives the rotating ring 52 to rotate, and the rotating ring 52 rotates in the rotating groove 51. When the moving rod 54 moves to the end of the movable groove 55, the rotating ring 52 rotates 120 degrees, that is, the sealing plate 34 is not fully opened, and air can be discharged from the formed opening. The rotation of the rotating ring 52 allows the rotating groove 51 to be engaged with the two limit blocks 43 in the floating plate 41, so that the floating plate 41 is abutted and locked, so that the floating plate 41 cannot move up any further, which correspondingly limits the downward movement of the sampler in the passivation solution, that is, the sampler is located in the passivation solution. When sampling at a specified depth, the float plate 41 is automatically limited and locked. Since the sampling bottle 1 needs to exhaust all the air in the sampling bottle 1 to complete the complete sampling, it takes a period of time. During this process, the float plate 41 is limited by the sampling tube 21, which can maintain the stability of sampling at a specified depth and avoid the sampler from floating up and down during sampling due to human factors. Since the float plate 41 and the surface of the passivation liquid are located, the arc-shaped groove 46 contains air, which creates a negative pressure adsorption effect between the float plate 41 and the surface of the passivation liquid. Since the float plate 41 is limited by the rotating ring 52, the sampler will not float up and down significantly, thereby affecting the sampling results.

[0050] Reference Fig. 9 , the middle part of the rotating ring 52 is penetrated, so that the middle part of the rotating ring 52 forms two half sectors.

[0051] Specifically, the middle part of the rotating ring 52 is penetrated to prevent the rotating ring 52 from affecting the floating plate 41 and driving the two limit blocks 43 to move normally upward in the limit hole 42. When the sampling reaches the specified depth, pressing the handle 22 can drive the rotating ring 52 to rotate and abut the limit block 43 to the limit, so that the sampler will not float up and down easily.

[0052] Reference Fig.10 The top annular array of the discharge chamber 27 is provided with exhaust holes 6 connected to the limiting holes 42 .

[0053] Specifically, when the sealing plate 34 is opened, the air in the sampling bottle 1 is squeezed from the sampling bottle 1 into the discharge chamber 27, and then enters the exhaust hole 6 from the discharge chamber 27, and the air is discharged through the limit hole 42. When the sampling is completed, the pressure on the handle 22 is released, so that the push rod 25 moves up and resets, and the sealing plate 34 automatically blocks the sealing hole 31 under the reset force of the torsion spring. At this time, the sampler can be taken out to complete the sampling of the passivation liquid to be tested. When discharging, the handle 22 can be pressed again to realize the removal and detection of the passivation liquid to be tested. The rest of the structure is the same as that of Example 2.

[0054] In summary, the working principle of the present invention is as follows: when sampling, the entire sampler is placed into the preparation container by holding the handle seat by hand (if sampling is performed in a larger and deeper passivation liquid pool, the sampler can be adapted for use if the size is enlarged accordingly). When the specified depth is reached, the handle 22 is pressed so that the handle 22 squeezes the lower pressure plate 24 through the lower pressure rod 23 when rotating. The lower pressure plate 24 drives the push rod 25 to press down and compress the lower pressure spring 26. The push rod 25 drives the push member 28 to squeeze the sealing component 3, thereby opening the sealing component 3, so that the air in the sampling bottle 1 can be connected to the outside world. At this time, the passivation liquid enters the sampling bottle 1 from the bottom of the sampling bottle 1 and passes through the lower pressure plate 24. The air inside the sampling bottle 1 is discharged. When the sampling is completed, the pressure on the handle 22 is released so that the pusher 28 no longer squeezes the sealing component 3, thereby causing the sealing component 3 to automatically seal, so that the passivation liquid in the sampling bottle 1 will not flow out from the bottom. The negative pressure inside it can make the passivation liquid to be tested be taken out smoothly, so as to achieve the sampling of the passivation liquid at a specified depth. When the sealing component 3 is opened for sampling, the two limit blocks 43 of the floating plate 41 can be abutted and limited by the rotating groove 51 on the rotating ring 52, so that the floating plate 41 is limited, thereby limiting the position of the sampler, avoiding the change of the sampling depth of the sampler, and improving the sampling depth and the accuracy of the detection result.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A passivation liquid preparation and detection sampler based on seamless steel pipe passivation treatment, comprising a sampling bottle (1), characterized in that: It also includes a sampling unit arranged on the top of the sampling bottle (1), and an indication unit arranged on the sampling unit; The sampling unit comprises a sealing component (3) arranged in the top of the sampling bottle (1), and a pushing component (2) arranged on the top of the sealing component (3); The indicating unit comprises an indicating component (4) arranged on a side wall of the pushing component (2), and a locking component (5) arranged between the indicating component (4) and the pushing component (2); The sampling unit is used to detect and sample the passivation liquid, and the indicating unit is used to indicate the sampling depth; The pushing assembly (2) comprises a sampling tube (21) arranged at the top of the sampling bottle (1), a handle seat arranged at the top of the sampling tube (21), a grip (22) arranged at the bottom of the handle seat, a pressing rod (23) arranged at one end of the grip (22), a pressing plate (24) arranged at the bottom of the pressing rod (23), a pushing rod (25) arranged at the bottom of the pressing plate (24), a pressing spring (26) arranged between the pressing plate (24) and the sampling tube (21), wherein the bottom of the pushing rod (25) passes through the middle of the sampling tube (21), a discharge cavity (27) is provided at the bottom of the sampling tube (21), and a pushing member (28) is arranged at the bottom of the pushing rod (25).

2. The passivation solution preparation and detection sampler based on the passivation treatment of seamless steel pipe according to claim 1, characterized in that: The pushing member (28) comprises a first pressing portion (281) arranged on one side of the bottom of the pushing rod (25), and a second pressing portion (282) arranged on one side of the first pressing portion (281).

3. The passivation solution preparation and detection sampler based on the passivation treatment of seamless steel pipe according to claim 2, characterized in that: The bottom of the first pressing part (281) is lower than the bottom of the second pressing part (282), and the bottom of the second pressing part (282) is inclined upward.

4. The passivation solution preparation and detection sampler based on the passivation treatment of seamless steel pipe according to claim 1, characterized in that: The sealing assembly (3) comprises a sealing hole (31) opened at the middle position of the top of the sampling bottle (1) and connected to the discharge chamber (27), a sealing groove (32) opened at the top of the sampling bottle (1), a rotating rod (33) arranged in the sealing groove (32), a sealing plate (34) arranged on the rotating rod (33), a torsion spring arranged between the rotating rod (33) and the sealing plate (34), and an extrusion inclined surface (35) opened on one side of the sealing plate (34), and a lower pressing portion (281) abuts against the extrusion inclined surface (35).

5. The passivation solution preparation and detection sampler based on the passivation treatment of seamless steel pipe according to claim 4, characterized in that: The indicating assembly (4) comprises a floating plate (41) sleeved on the sampling tube (21), a limiting hole (42) symmetrically opened on the side wall of the sampling tube (21), two limiting blocks (43) slidably connected in the limiting hole (42) and fixedly connected to the floating plate (41), a depth line (44) arranged on the side wall of the sampling tube (21), an indicating plate (45) arranged on one side of the top of the floating plate (41) and in contact with the side wall of the sampling tube (21), and an arc-shaped groove (46) opened on the bottom of the floating plate (41).

6. The passivation solution preparation and detection sampler based on the passivation treatment of seamless steel pipe according to claim 5, characterized in that: The locking assembly (5) comprises a rotating groove (51) provided in the sampling tube (21), a rotating ring (52) arranged in the rotating groove (51), abutment blocks (53) arranged in a linear array on the rotating ring (52), a moving rod (54) arranged at the bottom of the rotating ring (52), and a movable groove (55) provided at the top of the sealing plate (34), wherein the bottom of the moving rod (54) passes through the top of the sampling bottle (1) and is slidably connected to the movable groove (55).

7. The passivation solution preparation and detection sampler based on the passivation treatment of seamless steel pipe according to claim 6, characterized in that: The middle part of the rotating ring (52) is penetrated so that the middle part of the rotating ring (52) forms two half-sector shapes.

8. The passivation solution preparation and detection sampler based on the passivation treatment of seamless steel pipe according to claim 5, characterized in that: The top of the discharge chamber (27) is provided with an annular array of exhaust holes (6) which are connected to the limiting holes (42).

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