A measuring device and method for quickly measuring S value in phosphoric acid

Abstract

The invention relates to the technical field of environmental detection, in particular to a measuring device for quickly measuring the S value in phosphoric acid and a measuring method thereof, comprising a mounting plate, a measuring box fixedly mounted on the top of the mounting plate, a measuring cylinder fixedly mounted inside the measuring box, and further comprising: a titration component arranged inside the measuring box and used for titrating a phosphoric acid liquid of a certain concentration at a certain rate during flue gas sampling, a filter component arranged on the top of the measuring box and used for filtering large impurities in the flue gas; a negative pressure mechanism arranged on the outer wall of the measuring box, on the one hand, helps to ensure that a cotton plug originally soaked with its face downward is turned to face the filter component, thereby optimizing the contact effect between the wet absorption liquid and the flue gas, eliminating the hidden danger of uneven contact, thereby improving the accuracy and reliability of subsequent measurements, and being able to drop impurities under the influence of gravity, helping to avoid the situation where impurities affect the test results.

Description

Technical Field

[0001] The invention relates to the field of environmental detection, and in particular to a measuring device and a measuring method for quickly measuring the S value in phosphoric acid. Background Art

[0002] The application of phosphate in flue gas desulfurization is mainly as a chemical absorbent to remove sulfur dioxide from flue gas through a chemical reaction process.

[0003] In the flue gas CEMS system, the principle of phosphoric acid titration is to drip phosphoric acid of a certain concentration into the flue gas sampling pipeline at a certain rate, so that the phosphoric acid can absorb sufficient acidic substances in the water in the flue gas in advance. However, in the existing phosphoric acid titration system, the amount of phosphoric acid cannot be accurately controlled. There may be insufficient titration, resulting in a decrease in the concentration of SO2 dissolved in water in the flue gas, or excessive titration may cause phosphate crystallization and blockage inside the sampling device. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a measuring device and a measuring method for quickly measuring the S value in phosphoric acid.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a measuring device for quickly measuring the S value in phosphoric acid, comprising a mounting plate, a measuring box is fixedly mounted on the top of the mounting plate, a measuring cylinder is fixedly mounted inside the measuring box, and further comprising:

[0006] A titration component is arranged inside the measuring box and is used to titrate a phosphoric acid solution of a certain concentration at a certain rate during the flue gas sampling process;

[0007] A filter assembly is arranged on the top of the measuring box and is used to filter large impurities in the flue gas;

[0008] A negative pressure mechanism, disposed on the outer wall of the measuring box, for guiding the smoke toward the interior of the measuring box;

[0009] The time measurement module is responsible for accurately recording the duration;

[0010] An angle detection module, used to measure the change of rotation angle;

[0011] A clamping and flipping mechanism is arranged directly below the filter assembly and is used to stabilize and position the smoke absorption unit;

[0012] A controller, fixedly mounted on the inner wall of the measuring box, is used to control the clamping and flipping mechanism to drive the smoke absorbing element to realize a flipping operation after the angle detection module determines that the clamping and flipping mechanism rotates a specified angle;

[0013] The present invention arranges a clamping and flipping mechanism so that the clamping and flipping mechanism drives the cotton plug to flip 180 degrees. On the one hand, it helps to ensure that the cotton plug originally with the soaked side facing downward is turned to face the filter component, which can optimize the contact effect between the wet absorption liquid and the smoke, eliminate the hidden danger of uneven contact, thereby improving the accuracy and reliability of subsequent measurements, and can cause impurities to fall under the influence of gravity, which helps to avoid the situation where impurities affect the test results. On the other hand, in a smoke environment with different concentrations or components, turning the cotton plug over when used helps to maintain the stability of the internal pressure and airflow of the system, avoid fluctuations caused by local blockage or over-saturation, and reduce the occurrence of measurement errors caused by uneven absorption.

[0014] Preferably: the clamping and flipping mechanism comprises:

[0015] A mounting block, the mounting block being fixedly connected to the inner wall of the measuring box;

[0016] A motor, fixedly mounted on a side wall of the mounting block;

[0017] A first clamping block, fixedly connected to the output shaft end of the motor;

[0018] An electric push rod, the fixing portion of which is fixedly connected to the inner wall of the measuring box;

[0019] A round block, the round block is rotatably connected to the telescopic end of the electric push rod, and a torsion spring is fixedly installed between the round block and the fixed part of the electric push rod, and the torsion spring is sleeved on the telescopic end of the electric push rod;

[0020] A second clamping block is fixedly connected to a side of the round block away from the electric push rod.

[0021] Preferably: also include:

[0022] A connecting frame, fixedly connected to the side wall of the first clamping block;

[0023] An electric push rod, fixedly connected to the connecting frame;

[0024] A first indicator plate, fixedly connected to the telescopic end of the electric push rod;

[0025] The first receiving plate is fixedly connected to the side wall of the first indicating plate.

[0026] Preferably: also include:

[0027] A distance detection module is arranged inside the measuring box;

[0028] A plurality of holes and slots are formed in a linear array on the top of the first indicator plate;

[0029] A plurality of pressing rods are respectively slidably connected to the inside of the hole grooves at corresponding positions;

[0030] A plurality of lower pressing plates, respectively fixedly connected to the top of the lower pressing rod at corresponding positions, and the lower pressing plates are located inside the hole groove in an initial state;

[0031] A plurality of limit plates, respectively fixedly connected to the bottom ends of the pressing rods at corresponding positions;

[0032] A plurality of first springs are respectively fixedly connected between the limiting plate and the first indicating plate at corresponding positions, and all the first springs are respectively sleeved on the outer wall of the pressing rod at corresponding positions.

[0033] Preferably: also include:

[0034] a second indicator plate, fixedly connected to the side wall of the second clamping block;

[0035] A second receiving plate, slidably connected to the side wall of the second indicating plate;

[0036] A vertical plate fixedly connected to the side wall of the second receiving plate;

[0037] A limiting rod, fixedly connected to the side wall of the vertical plate;

[0038] A limiting seat, fixedly connected to the end of the limiting rod;

[0039] A second spring is fixedly connected between the limiting seat and the vertical plate, and the second spring is sleeved on the outer wall of the limiting rod;

[0040] The two pins are symmetrically fixedly connected to the second receiving plate.

[0041] Preferably: the filter assembly comprises:

[0042] A shielding cover fixedly connected to the top of the measuring box

[0043] A filter cartridge, fixedly connected to the shielding cover;

[0044] The filter screen is fixedly installed inside the filter cartridge.

[0045] Preferably: also include:

[0046] An electric cylinder is fixedly mounted on the inner wall of the measuring box;

[0047] The receiving plate is fixedly connected to the telescopic end of the electric cylinder through a supporting plate, and a receiving groove is provided on the top of the receiving plate.

[0048] In a second aspect, the present invention provides a method for measuring a measuring device for rapidly measuring an S value in phosphoric acid, the method comprising the following steps:

[0049] The controller receives timing completion information from the time measurement module;

[0050] The controller generates first control information according to the timing completion information;

[0051] The controller sends the first control information to the motor to control the motor to start working;

[0052] Among them, a timing time is preset, and the timing is performed through the metering module. After the timing is completed, the timing completion information is generated, and the timing completion information is fed back to the controller;

[0053] After the controller controls the motor to start through the first control information, the motor drives the first clamping block to rotate to complete the flipping of 180 degrees.

[0054] Preferably, it also includes:

[0055] The controller receives the rotation angle information measured by the angle detection module;

[0056] The controller generates second control information according to the rotation angle information;

[0057] The controller sends the second control information to the electric push rod to control the electric push rod to start contraction.

[0058] Preferably: also include:

[0059] The controller receives the distance information obtained by the distance detection module;

[0060] The controller generates third control information according to the distance information;

[0061] The controller sends the third control information to the electric push rod to control the electric push rod to start pushing out.

[0062] When the distance detection module detects that the distance between the cotton plugs remains constant within a preset time period, that is, does not change, the information is fed back to the controller;

[0063] After the controller controls the electric push rod to start pushing out through the third control information, the electric push rod pushes the first indicating plate to start pushing out.

[0064] Compared with the prior art, the present invention has the following beneficial effects:

[0065] 1. The present invention arranges a clamping and flipping mechanism so that the clamping and flipping mechanism drives the cotton plug to flip 180 degrees. On the one hand, it helps to ensure that the cotton plug originally with the soaked side facing downward is turned to face the filter component, which can optimize the contact effect between the wet absorption liquid and the smoke, eliminate the hidden danger of uneven contact, thereby improving the accuracy and reliability of subsequent measurements, and can cause impurities to fall under the influence of gravity, which helps to avoid the situation where impurities affect the test results. On the other hand, in a smoke environment with different concentrations or components, turning the cotton plug over when used helps to maintain the stability of the internal pressure and airflow of the system, avoid fluctuations caused by local blockage or over-saturation, and reduce the occurrence of measurement errors caused by uneven absorption.

[0066] 2. The present invention drives the lower pressure plate to move through the lower pressure rod, so that the lower pressure plate moves to the top of the cotton plug, and after losing the limit, the first spring will release the spring force to drive the limit plate to push downward, and the limit plate pushes the lower pressure plate toward the top of the cotton plug through the lower pressure rod, thereby facilitating the use of the thrust of the lower pressure plate to push the cotton plug, so as to assist in detaching the cotton plug from the first clamping block or the second clamping block, thereby facilitating smooth entry into the measuring tube and preparing for the subsequent measurement process.

[0067] 3. The present invention provides an insertion pin so that the insertion pin can be directly inserted into the interior of the cotton plug, and under the action of the second spring, the second receiving plate is pulled toward the second indicator plate through the vertical plate, and the second indicator plate drives the insertion pin toward the second indicator plate, thereby ensuring that the cotton plug is tightly attached to the side of the second clamping block by the insertion pin. Even if the cotton plug completes a 180-degree flip, the positioning effect of the insertion pin can prevent it from accidentally sliding down due to gravity. It is worth noting that the insertion pin does not generate downward pressure while maintaining lateral positioning. Therefore, during the downward pushing of the lower pressure plate, the cotton plug can smoothly follow the insertion pin guide and steadily descend into the interior of the measuring tube, thus preparing for subsequent detection steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 is a flow chart of the control method of the present invention;

[0069] Figure 2 The overall structure of the detection device of the present invention is shown in FIG. Figure 1 ;

[0070] Figure 3 The structure of the present invention is schematically shown along the cross section of the measuring box. Figure 1 ;

[0071] Figure 4 The structure of the present invention is schematically shown along the cross section of the measuring box. Figure 2 ;

[0072] Figure 5 The structure diagram of the connection between the first clamping block and the second clamping block of the present invention is shown in FIG. Figure 1 ;

[0073] Figure 6 For the present invention Figure 5 An enlarged schematic diagram of the structure of section A is shown;

[0074] Figure 7 For the present invention Figure 5 An enlarged schematic diagram of the structure of part B is shown;

[0075] Figure 8 The structure diagram of the connection between the first clamping block and the second clamping block of the present invention is shown in FIG. Figure 2 ;

[0076] Fig. 9 For the present invention Figure 8 An enlarged schematic diagram of the C-section structure is shown;

[0077] Fig.10 For the present invention Figure 8 An enlarged schematic diagram of the D-section structure is shown;

[0078] Fig.11 It is a structural schematic diagram of the first indicator plate of the present invention.

[0079] In the figure: 1. mounting plate; 2. measuring box; 3. measuring cylinder; 4. controller; 5. timer; 6. mounting block; 7. motor; 8. first clamping block; 9. electric push rod; 10. round block; 11. torsion spring; 12. second clamping block; 13. connecting frame; 14. electric push rod; 15. first indicator plate; 16. first receiving plate; 17. distance detection module; 18. hole groove; 19. lower pressure rod; 20. lower pressure plate; 21. limit plate; 22. first spring; 23. second indicator plate; 24. second receiving plate; 25. vertical plate; 26. limit rod; 27. limit seat; 28. second spring; 29. ​​pin; 30. shielding cover; 31. filter cartridge; 32. filter screen; 33. electric cylinder; 34. receiving plate; 35. storage box; 36. automatic quantitative spray head. DETAILED DESCRIPTION

[0080] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0081] like Figures 2 to 11 A measuring device for quickly measuring the S value in phosphoric acid is shown, comprising a mounting plate 1, a measuring box 2 is fixedly mounted on the top of the mounting plate 1, a measuring cylinder 3 is fixedly mounted inside the measuring box 2, and further comprising:

[0082] The titration component is arranged inside the measuring box 2 and is used to titrate a phosphoric acid solution of a certain concentration at a certain rate during the flue gas sampling process;

[0083] A filter assembly is arranged on the top of the measuring box 2 and is used to filter large impurities in the flue gas;

[0084] A negative pressure mechanism is provided on the outer wall of the measuring box 2 and is used to guide the smoke to the inside of the measuring box 2;

[0085] The time measurement module is responsible for accurately recording the duration;

[0086] An angle detection module, used to measure the change of rotation angle;

[0087] The clamping and flipping mechanism is arranged directly below the filter assembly and is used to stabilize and position the smoke absorption unit;

[0088] The controller 4 is fixedly mounted on the inner wall of the measuring box 2, and is used to control the clamping and flipping mechanism to drive the smoke absorbing element to realize the flipping operation after the angle detection module determines that the clamping and flipping mechanism rotates to a specified angle;

[0089] In the specific implementation, the operator first places the cotton plug soaked with the absorption liquid on the clamping and flipping mechanism and fixes it, so that the cotton plug soaked with the absorption liquid is facing the smoke inlet of the filter component. After the preparation is completed, the operator installs the measuring box 2 to a suitable position through the mounting plate 1, and then controls the negative pressure mechanism to start working through the controller 4, and discharges the air inside the measuring box 2 to the outside through the negative pressure mechanism, thereby forming a negative pressure space inside the collection box, and then the external flue gas is driven by the pressure difference and is sucked into the collection box after passing through the filter component. In this process, the filter component will filter the larger impurities in the flue gas to prevent them from entering the interior of the measuring box 2. Subsequently, the passing flue gas is quantitatively sprayed with phosphoric acid liquid through the titration component, so that the phosphoric acid makes the water in the flue gas absorb a sufficient amount of acidic substances in advance, which helps to avoid the water solubility of SO2 in the flue gas, resulting in the measurement result being inconsistent with the actual emission concentration. In addition, the titration component can stably and accurately control the amount of phosphoric acid sprayed, which helps to prevent the insufficient titration amount from causing the concentration of SO2 in the flue gas to be reduced due to dissolution in water, or excessive titration from causing phosphate crystallization and blockage inside the device.

[0090] Subsequently, the flue gas after titration will flow onto the soaked cotton plug. Since there is an absorbent on the cotton plug, the target pollutants in the flue gas will react chemically or dissolve acid after contacting the absorbent. While controlling the start of the negative pressure mechanism, the controller 4 will also control the time metering module to start timing for the first time. The timing time is preset. After the time metering module completes the first timing, the controller 4 will control the clamping flipping mechanism to drive the cotton plug to flip 180 degrees. On the one hand, it helps to ensure that the cotton plug originally with the soaked side facing downward is turned to face the filter component, which can optimize the contact effect between the wet absorbent and the flue gas, eliminate the hidden danger of uneven contact, and thus improve the accuracy and reliability of subsequent measurements. In addition, impurities can fall under the influence of gravity, which helps to avoid the situation where impurities affect the test results. On the other hand, in flue gas environments with different concentrations or components, turning the cotton plug over when used helps to maintain the stability of the internal pressure and airflow of the system, avoid fluctuations caused by local blockage or oversaturation, and reduce the occurrence of measurement errors caused by uneven absorption.

[0091] After the flipping is completed, the controller 4 controls the time measurement module to start timing for the second time, and the timing time is still pre-set. After the second timing is completed, the controller 4 controls the clamping flipping mechanism to release the limit clamping of the cotton plug, and then the cotton plug will fall into the measuring tube 3 for storage under the action of gravity, which is conducive to the subsequent rapid detection of sulfur content.

[0092] It should be noted that the titration assembly includes a storage box 35, which is fixedly mounted on the inner wall of the measuring box 2. The storage box 35 is fixedly connected to an automatic quantitative spray head 36, which is used to quantitatively spray the phosphoric acid solution inside the storage box 35 into the flue gas.

[0093] It should be noted again that the S value is the concentration of sulfur dioxide.

[0094] It should be further explained that the choice of absorption liquid is based on the properties of the target pollutants. Common ones include water, alkaline solutions such as sodium hydroxide solution for absorbing acidic gases, or specific chemical solvents.

[0095] It should be noted that the time measurement module is a timer 5 , and the timer 5 is fixedly installed on the side wall of the measuring box 2 .

[0096] It should be noted that the negative pressure assembly includes existing components such as a negative pressure fan and an exhaust pipe. It is an existing mature technology and will not be elaborated on here.

[0097] As a technical optimization solution of the present invention: the clamping and flipping mechanism includes:

[0098] A mounting block 6, the mounting block 6 is fixedly connected to the inner wall of the measuring box 2;

[0099] The motor 7 is fixedly mounted on the side wall of the mounting block 6;

[0100] A first clamping block 8 is fixedly connected to the output shaft end of the motor 7;

[0101] An electric push rod 9, the fixing portion of which is fixedly connected to the inner wall of the measuring box 2;

[0102] The round block 10 is rotatably connected to the telescopic end of the electric push rod 9, and a torsion spring 11 is fixedly installed between the round block 10 and the fixed part of the electric push rod 9, and the torsion spring 11 is sleeved on the telescopic end of the electric push rod 9;

[0103] A second clamping block 12, the second clamping block 12 is fixedly connected to a side of the round block 10 away from the electric push rod 9;

[0104] In a specific implementation, a clamping opening is reserved after the first clamping block 8 and the second clamping block 12 are combined, and the cotton plug is fixedly installed on the clamping opening. After the first timing is completed, the controller 4 controls the motor 7 to start working, and the motor 7 drives the first clamping block 8 to rotate. Since the first clamping block 8 and the second clamping block 12 are closely attached and there is interaction of friction, this rotation action will be immediately transmitted to the second clamping block 12, prompting the two to rotate together in a coordinated manner, so that the first clamping block 8 and the second clamping block 12 will drive the cotton plug to change the surface through the cooperation between the first clamping block 8 and the second clamping block 12, and then the cotton plug originally with the soaked surface facing downward will be turned to face the filter assembly, which helps both sides of the cotton plug to fully react with the smoke, so as to facilitate subsequent detection;

[0105] After the second timing is completed, the controller 4 controls the electric push rod 9 to start working. The contraction of the electric push rod 9 will drive the round block 10 away from the first clamping block 8. The movement of the round block 10 will drive the second clamping block 12 away from the first clamping block 8, thereby releasing the fixation of the cotton plug. The cotton plug that loses its limit will automatically fall into the inside of the measuring tube 3 under the action of gravity, which is conducive to the subsequent rapid measurement of the results.

[0106] It should be noted that the angle detection module is an angle sensor, which is fixedly mounted on the round block 10 .

[0107] As a technical optimization solution of the present invention: it also includes:

[0108] A connecting frame 13, fixedly connected to the side wall of the first clamping block 8;

[0109] The electric push rod 14 is fixedly connected to the connecting frame 13;

[0110] A first indicator plate 15 is fixedly connected to the telescopic end of the electric push rod 14;

[0111] The first receiving plate 16 is fixedly connected to the side wall of the first indicating plate 15;

[0112] In the specific implementation, the above example illustrates that the cotton plug soaked with the absorption liquid is clamped and positioned by the first clamping block 8 and the second clamping block 12. However, since the friction between the cotton plug and the first clamping block 8 and the second clamping block 12 is reduced after the cotton plug is wet, it may fall under the action of gravity before the absorption reaction is completed, thereby affecting the measurement result.

[0113] Therefore, in the initial state, a first receiving plate 16 is provided at the bottom of the cotton plug to receive the cotton plug, so as to prevent the cotton plug from falling directly into the measuring tube 3 under the action of gravity.

[0114] It needs to be explained again that the above problem can also be solved by opening grooves or adding protrusions on the inner walls of the first clamping block 8 and the second clamping block 12 to increase the friction between the cotton plug and the cotton plug, thereby helping to prevent the cotton plug from falling back under the action of gravity.

[0115] As a technical optimization solution of the present invention: it also includes:

[0116] The distance detection module 17 is arranged inside the measuring box 2;

[0117] A plurality of holes 18 are provided in a linear array on the top of the first indicator plate 15;

[0118] A plurality of pressing rods 19 are slidably connected to the inside of the holes 18 at corresponding positions;

[0119] A plurality of lower pressing plates 20 are respectively fixedly connected to the top of the lower pressing rods 19 at corresponding positions, and the lower pressing plates 20 are initially located inside the hole slots 18;

[0120] A plurality of limit plates 21, respectively fixedly connected to the bottom ends of the pressing rods 19 at corresponding positions;

[0121] A plurality of first springs 22 are respectively fixedly connected between the limit plates 21 and the first indicator plate 15 at corresponding positions, and all the first springs 22 are respectively sleeved on the outer wall of the pressing rod 19 at corresponding positions;

[0122] In the specific implementation, it is proposed in the above example that the first receiving plate 16 is added to receive the bottom of the cotton plug to prevent the cotton plug from falling back into the measuring tube 3 under the action of gravity. However, during the long-term extrusion and fixation process, the cotton plug may adhere to the side walls of the first clamping block 8 and the second clamping block 12, so that in the subsequent process of the electric push rod 9 driving the second clamping block 12 away from the first clamping block 8, the following three situations may occur. The first situation is that the cotton plug adheres to the inner wall of the first clamping block 8, the second situation is that it adheres to the inner wall of the second clamping block 12, and the third situation is that the cotton plug directly falls into the inside of the measuring tube 3 after the first clamping block 8 and the second clamping block 12 are separated. The third situation is not processed;

[0123] After the cotton plug is changed, the position of the cotton plug is detected by the distance detection module 17. When the electric push rod 9 drives the second clamping block 12 away from the first clamping block 8, if the distance detection module 17 obtains the distance information from the cotton plug that exceeds the preset range, no feedback is given. When the distance detection module 17 monitors that the distance between the cotton plugs remains constant within the preset time period, that is, there is no change, the information is fed back to the controller 4. The controller 4 controls the electric push rod 14 to start working, and the electric push rod 14 pushes the first indicator plate 15 to move. The first indicator plate 15 drives All the lower pressure rods 19 move, and all the lower pressure rods 19 drive the lower pressure plate 20 to move, so that the lower pressure plate 20 moves to the top of the cotton plug, and after losing the limit, the first spring 22 will release the spring force to drive the limit plate 21 to push downward, and the limit plate 21 pushes the lower pressure plate 20 toward the top of the cotton plug through the lower pressure rods 19, so as to facilitate the use of the thrust of the lower pressure plate 20 to push the cotton plug, so as to assist the cotton plug to detach from the first clamping block 8 or the second clamping block 12, thereby facilitating smooth entry into the measuring tube 3 and preparing for the next measurement process.

[0124] It should be noted that if the method in the above example is used to increase the friction by adding protrusions on the side walls of the first clamping block 8 and the second clamping block 12, the difficulty of the cotton plug to separate from the first clamping block 8 and the second clamping block 12 may increase during the process of the lower pressure plate 20 pushing the cotton plug to move, so the first receiving plate 16 is used to block it.

[0125] As a technical optimization solution of the present invention: it also includes:

[0126] A second indicator plate 23, fixedly connected to the side wall of the second clamping block 12;

[0127] The second receiving plate 24 is slidably connected to the side wall of the second indicating plate 23;

[0128] The vertical plate 25 is fixedly connected to the side wall of the second receiving plate 24;

[0129] The limiting rod 26 is fixedly connected to the side wall of the vertical plate 25;

[0130] The limiting seat 27 is fixedly connected to the end of the limiting rod 26;

[0131] The second spring 28 is fixedly connected between the limiting seat 27 and the vertical plate 25, and the second spring 28 is sleeved on the outer wall of the limiting rod 26;

[0132] Two pins 29 are symmetrically fixedly connected to the second receiving plate 24;

[0133] In the specific implementation, in the above embodiment, after the first timing is completed, the first clamping block 8 and the second clamping block 12 need to be turned over. After turning over 180 degrees, the first receiving plate 16 will turn over to the top, thereby losing the obstruction to the cotton plug, so the cotton plug may fall off directly after turning over;

[0134] Therefore, by providing the insertion pin 29, the insertion pin 29 is directly inserted into the interior of the cotton plug, and under the action of the second spring 28, the second receiving plate 24 is pulled toward the second indicator plate 23 through the vertical plate 25, and the second indicator plate 23 drives the insertion pin 29 toward the second indicator plate 23, and then the insertion of the insertion pin 29 ensures that the cotton plug is closely attached to the side of the second clamping block 12, and even if the cotton plug completes a 180-degree flip, it can be prevented from accidentally sliding down due to the influence of gravity by the positioning effect of the insertion pin 29. It is worth noting that the insertion pin 29 does not generate a downward pressure while maintaining the lateral positioning, so when the lower pressure plate 20 is pushed downward, the cotton plug can be smoothly guided along the insertion pin 29 and steadily descend into the interior of the measuring tube 3, so as to prepare for the subsequent detection steps;

[0135] And through the setting of the pin 29, when the electric push rod 9 pulls the second clamping block 12 to move, the pin 29 will simultaneously assist the cotton plug to separate smoothly from the first clamping block 8. In this way, even if the cotton plug adheres to the side wall of the first clamping block 8, the pulling action of the pin 29 can effectively cause the cotton plug to detach, thereby facilitating the normal falling of the cotton plug, and then the electric push rod 14 will only start working when the cotton plug adheres to the second clamping block 12, thereby helping to further improve the reliability and automation efficiency of the system.

[0136] As a technical optimization solution of the present invention: the filtering component includes:

[0137] The shielding cover 30 is fixedly connected to the top of the measuring box 2

[0138] The filter cartridge 31 is fixedly connected to the shielding cover 30;

[0139] The filter screen 32 is fixedly installed inside the filter cartridge 31;

[0140] In a specific implementation, when the exhaust smoke passes through the filter 32, the filter 32 will intercept large particles of impurities in the smoke, so as to help prevent the large particles of impurities from contaminating the cotton plug and causing inaccurate measurement results.

[0141] It should be noted again that the distance detection module 17 is specifically a distance tester, and the distance tester is fixedly connected to the bottom of the shielding cover 30 .

[0142] As a technical optimization solution of the present invention: it also includes:

[0143] The electric cylinder 33 is fixedly mounted on the inner wall of the measuring box 2;

[0144] The receiving plate 34 is fixedly connected to the telescopic end of the electric cylinder 33 through a support plate, and a receiving groove is formed on the top of the receiving plate 34;

[0145] In a specific implementation, in the initial state, the receiving plate 34 is located at the top of the measuring tube 3 to block the opening of the measuring tube 3. After the cotton plug is replaced, the fine impurities adhering to the cotton are blocked by the receiving groove on the receiving plate 34 when they fall under the action of gravity, thereby preventing the impurities from entering the interior of the measuring tube 3 and affecting the measurement results.

[0146] like Figure 1 A measuring method of a measuring device for quickly measuring the S value in phosphoric acid is shown, and the measuring method comprises the following steps:

[0147] The controller 4 receives the timing completion information from the time measurement module;

[0148] The controller 4 generates first control information according to the timing completion information;

[0149] The controller 4 sends the first control information to the motor 7 to control the motor 7 to start working.

[0150] As a technical optimization solution of the present invention: it also includes:

[0151] The controller 4 receives the rotation angle information measured by the angle detection module;

[0152] The controller 4 generates second control information according to the rotation angle information;

[0153] The controller 4 sends the second control information to the electric push rod 9 to control the electric push rod 9 to start contraction.

[0154] As a technical optimization solution of the present invention: it also includes:

[0155] The controller 4 receives the distance information acquired by the distance detection module 17;

[0156] The controller 4 generates third control information according to the distance information;

[0157] The controller 4 sends the third control information to the electric push rod 14 to control the electric push rod 14 to start pushing out.

[0158] Working principle of the present invention:

[0159] The operator first places the cotton plug soaked with the absorbent on the clamping and flipping mechanism and fixes it so that the cotton plug soaked with the absorbent is facing the smoke inlet of the filter component. After the preparation is completed, the operator installs the measuring box 2 to a suitable position through the mounting plate 1, and then controls the negative pressure mechanism to start working through the controller 4. The air inside the measuring box 2 is discharged to the outside through the negative pressure mechanism, thereby forming a negative pressure space inside the collection box, and then the external smoke is driven by the pressure difference and is sucked into the collection box after passing through the filter component. In this process, the filter component will filter larger impurities in the smoke to prevent them from entering the interior of the measuring box 2, and the smoke passing through the filter component will flow to the soaked cotton plug. Because there is absorbent on the cotton plug, the target pollutants in the smoke will react chemically or dissolve in acid after contacting with the absorbent, and the negative pressure mechanism is controlled to start. At the same time, the controller 4 will also control the time metering module to start timing for the first time. The timing time is preset. After the time metering module completes the first timing, the controller 4 will control the clamping flipping mechanism to drive the cotton plug to flip 180 degrees. On the one hand, it helps to ensure that the cotton plug originally with the soaked side facing downward is turned to face the filter component, which can optimize the contact effect between the wet absorption liquid and the smoke, eliminate the hidden danger of uneven contact, thereby improving the accuracy and reliability of subsequent measurements, and under the influence of gravity, impurities will fall, which helps to avoid the situation where impurities affect the test results. On the other hand, in smoke environments with different concentrations or components, turning the cotton plug over when used helps to maintain the stability of the internal pressure and airflow of the system, avoid fluctuations caused by local blockage or oversaturation, and reduce the occurrence of measurement errors caused by uneven absorption;

[0160] After the flipping is completed, the controller 4 controls the time measurement module to start timing for the second time, and the timing time is still pre-set. After the second timing is completed, the controller 4 controls the clamping flipping mechanism to release the limit clamping of the cotton plug, and then the cotton plug will fall into the measuring tube 3 for storage under the action of gravity, which is conducive to the subsequent rapid detection of sulfur content.

[0161] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A measuring device for quickly measuring the S value in phosphoric acid, comprising a mounting plate (1), a measuring box (2) fixedly mounted on the top of the mounting plate (1), a measuring cylinder (3) fixedly mounted inside the measuring box (2), characterized in that: Also includes: A titration component, arranged inside the measuring box (2), used to titrate a phosphoric acid solution of a certain concentration at a certain rate during the flue gas sampling process; A filter assembly, arranged on the top of the measuring box (2), and used for filtering large impurities in the flue gas; A negative pressure mechanism, arranged on the outer wall of the measuring box (2), and used for guiding the smoke toward the interior of the measuring box (2); The time measurement module is responsible for accurately recording the duration; An angle detection module, used to measure the change of rotation angle; A clamping and flipping mechanism is arranged directly below the filter assembly and is used to stabilize and position the smoke absorption unit; A controller (4) is fixedly mounted on the inner wall of the measuring box (2), and is used to control the clamping and flipping mechanism to drive the smoke absorbing element to perform a flipping operation after the angle detection module determines that the clamping and flipping mechanism has rotated a specified angle; The clamping and flipping mechanism comprises: A mounting block (6), the mounting block (6) being fixedly connected to the inner wall of the measuring box (2); A motor (7) fixedly mounted on a side wall of the mounting block (6); A first clamping block (8) fixedly connected to the output shaft end of the motor (7); An electric push rod (9), wherein a fixed portion of the electric push rod (9) is fixedly connected to an inner wall of the measuring box (2); A round block (10), the round block (10) being rotatably connected to the telescopic end of the electric push rod (9), and a torsion spring (11) being fixedly installed between the round block (10) and the fixed portion of the electric push rod (9), the torsion spring (11) being sleeved on the telescopic end of the electric push rod (9); A second clamping block (12), the second clamping block (12) being fixedly connected to a side of the round block (10) away from the electric push rod (9) Also includes: A connecting frame (13) fixedly connected to a side wall of the first clamping block (8); An electric push rod (14) fixedly connected to the connecting frame (13); A first indicator plate (15) fixedly connected to the telescopic end of the electric push rod (14); A first receiving plate (16) fixedly connected to the side wall of the first indicating plate (15) Also includes: A distance detection module (17) is arranged inside the measuring box (2); A plurality of holes (18) are formed in a linear array and are disposed on the top of the first indicator plate (15); A plurality of pressing rods (19) are respectively slidably connected to the inside of the hole grooves (18) at corresponding positions; A plurality of lower pressure plates (20) are respectively fixedly connected to the top of the lower pressure rod (19) at corresponding positions, and the lower pressure plates (20) are initially located inside the hole groove (18); A plurality of limit plates (21) respectively fixedly connected to the bottom ends of the pressing rods (19) at corresponding positions; A plurality of first springs (22) are respectively fixedly connected between the limiting plate (21) and the first indicating plate (15) at corresponding positions, and all of the first springs (22) are respectively sleeved on the outer wall of the pressing rod (19) at corresponding positions. Also includes: A second indicator plate (23) fixedly connected to a side wall of the second clamping block (12); A second receiving plate (24) slidably connected to a side wall of the second indicating plate (23); A vertical plate (25) fixedly connected to a side wall of the second receiving plate (24); A limiting rod (26) fixedly connected to the side wall of the vertical plate (25); A limiting seat (27) fixedly connected to the end of the limiting rod (26); A second spring (28) is fixedly connected between the limiting seat (27) and the vertical plate (25), and the second spring (28) is sleeved on the outer wall of the limiting rod (26); Two pins (29) are symmetrically fixedly connected to the second receiving plate (24).

2. A measuring device for rapidly measuring the S value in phosphoric acid according to claim 1, characterized in that: The filter assembly comprises: A shielding cover (30) fixedly connected to the top of the measuring box (2) A filter cartridge (31) fixedly connected to the shielding cover (30); The filter screen (32) is fixedly mounted inside the filter cartridge (31).

3. A measuring device for rapidly measuring the S value in phosphoric acid according to claim 1, characterized in that: Also includes: An electric cylinder (33) fixedly mounted on the inner wall of the measuring box (2); The receiving plate (34) is fixedly connected to the telescopic end of the electric cylinder (33) via a support plate, and a receiving groove is provided on the top of the receiving plate (34).

4. A measuring method for a measuring device for rapidly measuring the S value in phosphoric acid, applicable to a measuring device for rapidly measuring the S value in phosphoric acid as claimed in any one of claims 1 to 3, characterized in that: The measurement method includes the following steps: The controller (4) receives timing completion information from the time measurement module; The controller (4) generates first control information according to the timing completion information; The controller (4) sends the first control information to the motor (7) to control the motor (7) to start working.

5. The measuring method of the measuring device for rapidly measuring the S value in phosphoric acid according to claim 4, characterized in that: Also includes: The controller (4) receives the rotation angle information measured by the angle detection module; The controller (4) generates second control information according to the rotation angle information; The controller (4) sends the second control information to the electric push rod (9) to control the electric push rod (9) to start contraction.

6. The measuring method of the measuring device for rapidly measuring the S value in phosphoric acid according to claim 5, characterized in that: Also includes: The controller (4) receives the distance information acquired by the distance detection module (17); The controller (4) generates third control information according to the distance information; The controller (4) sends the third control information to the electric push rod (14) to control the electric push rod (14) to start pushing out.

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