Multifunctional reactant measuring and sampling device

Abstract

The utility model relates to a multifunctional reactant measuring and sampling device, and relates to the technical field of reactant sampling devices, in order to solve the problem that it is difficult for a detection instrument to monitor a reactant, the multifunctional reactant measuring and sampling device comprises a measuring barrel, the measuring barrel is provided with a reactant inlet and a discharge outlet, the reactant inlet is formed in the bottom of the measuring barrel, and the discharge outlet is formed in the bottom of the measuring barrel. An inlet electric valve is arranged at the reactant inlet, the discharge port is arranged on the side wall of the measuring barrel, a discharge valve is arranged at the discharge port, a PH meter interface, a densimeter interface and a pressure transmitter interface are arranged on the measuring barrel, the PH meter interface is arranged at the top of the measuring barrel, and the densimeter interface is arranged at the bottom of the measuring barrel. And the densimeter interface and the pressure transmitter interface are obliquely arranged on the side wall of the measuring barrel. The device has the advantages that key parameters of reactants can be monitored in real time, sampling operation of the reactants is facilitated, further analysis and detection are facilitated, and measurement accuracy and stability are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of reaction agent sampling devices, in particular to a multifunctional reaction agent measuring and sampling device. BACKGROUND

[0002] In the steel, non-ferrous metal, petrochemical, building material and power industries, various closed liquid-holding tower type reactors are widely used in the production process; these reactors play a crucial role in water treatment, waste gas treatment and other aspects. For example, in the field of water treatment, tower type reactors are used to remove impurities in water, adjust water quality and ensure water quality during the production process; in the field of waste gas treatment, tower type reactors are used to absorb, convert or remove harmful substances in waste gas to meet environmental emission standards. These tower type reactors usually have complex internal structures to provide sufficient reaction space and conditions to ensure that the reaction agent can fully react to achieve the expected treatment effect.

[0003] However, in actual application, due to the large number of tower type reactors in water treatment and waste gas treatment equipment in various production industries, the density, PH value and other parameters of the reaction agent are often monitored in real time during the reaction process to feedback the reaction condition; due to the complex working conditions in the reactor, directly placing the detection instrument on the reactor body for real-time monitoring often causes the measured value to be greatly disturbed, affecting the accuracy and reliability of the data, and the installation and maintenance of the detection instrument are difficult, so it needs to be improved. CONTENT OF THE INVENTION

[0004] In order to solve the problem of difficult detection of reaction agent by detection instrument, the application provides a multifunctional reaction agent measuring and sampling device.

[0005] The multifunctional reaction agent measuring and sampling device provided by the application adopts the following technical scheme:

[0006] A multifunctional reaction agent measuring and sampling device, comprising a measuring barrel, a reaction agent inlet and a discharge port are respectively formed in the measuring barrel, the reaction agent inlet is arranged at the bottom of the measuring barrel, an inlet electric valve is arranged at the reaction agent inlet, the discharge port is arranged on the side wall of the measuring barrel, a discharge valve is arranged at the discharge port, a PH meter interface, a density meter interface and a pressure transmitter interface are arranged on the measuring barrel, the PH meter interface is arranged at the top of the measuring barrel, and the density meter interface and the pressure transmitter interface are both arranged on the side wall of the measuring barrel in an inclined manner.

[0007] Due to the complex working conditions in the reactor, directly placing the detection instrument in the reactor body for real-time monitoring often causes the measured value to be greatly disturbed, affecting the accuracy and reliability of the data, and the installation and maintenance of the detection instrument are difficult; by adopting the above technical scheme, the reagent inlet is connected to the bottom of the measuring barrel, the discharge port is connected to the side wall of the measuring barrel, and the PH meter interface, the density meter interface and the pressure transmitter interface are connected to the side wall of the measuring barrel; when the reagent is monitored, the inlet electric valve is opened, the reagent enters the measuring barrel through the reagent inlet at the bottom, since the reagent inlet is arranged at the bottom of the measuring barrel, it can buffer the reagent transported from the reactor, then in the measuring barrel, the reagent can be measured through the PH meter interface at the top and the density meter interface and the pressure transmitter interface obliquely arranged on the side wall, wherein the PH meter interface is used to connect the PH meter to measure the acidity and alkalinity of the reagent, the density meter interface is used to connect the density meter to measure the density of the reagent, and the pressure transmitter interface is used to connect the pressure transmitter to monitor the pressure in the measuring barrel in real time, finally, when the reagent in the measuring barrel needs to be discharged, the discharge valve arranged at the discharge port can be opened to discharge the reagent from the measuring barrel;

[0008] By arranging the measuring barrel, the PH meter interface, the density meter interface and the pressure transmitter interface, the device can monitor the key parameters of the reagent in real time, such as density and PH value, provide important feedback for the reaction condition in the production process, conveniently sample the reagent for further analysis and detection, isolate the measuring instrument (such as the PH meter and the density meter) from the reactor body, reduce the interference of the complex working conditions in the reactor on the instrument measurement, improve the accuracy and stability of the measurement, facilitate the maintenance and repair of the instrument, reduce the maintenance cost and work difficulty, transfer the reagent measurement interface to the external measuring barrel, without additional holes on the outer wall of the reactor, simplify the design and construction process, and finally the density meter interface and the pressure transmitter interface are obliquely arranged on the side wall of the measuring barrel, which can alleviate the blockage problem caused by the slurry reagent, and further ensure the accuracy and stability of the measurement.

[0009] Optionally, the number of PH meter interfaces is two, and a PH meter flushing pipe for flushing is arranged on the two PH meter interfaces.

[0010] Due to the complex working condition in the reactor, the reactant may contain various impurities or particulate matters, which are easy to adhere to the electrode of the PH meter, affecting the measurement accuracy; by adopting the above technical scheme, the number of PH meter interfaces is two, the PH meter flushing pipe is installed at the PH meter interface water washing hole, and the PH meter flushing electric valve is installed on the PH meter flushing pipe; through the setting of the PH meter flushing pipe and the PH meter flushing electric valve, the on-line timed flushing of the PH meter electrode is realized, which can effectively reduce the measurement inaccuracy or failure of the PH meter electrode caused by fouling or blockage during use, and can timely remove the impurities or particulate matters, ensuring that the PH meter can always accurately measure the PH value of the reactant. The instruments and electric valves of the device can be included in remote PLC or DCS control, improving the automation degree of the whole system, without manual intervention, improving the work efficiency and reducing the operation difficulty and human error.

[0011] Optionally, the number of density meter interfaces is two, and the two density meter interfaces are arranged on the same side of the measuring barrel, and a density meter flushing pipeline for flushing is commonly arranged on the two density meter interfaces, a density meter flushing electric valve for controlling on-off is arranged on the density meter flushing pipeline, and the density meter flushing pipeline is connected with the PH meter flushing pipe inlet.

[0012] By adopting the above technical scheme, the number of density meter interfaces is two, the density meter flushing pipeline is installed at the density meter interface water washing hole, and the density meter flushing electric valve is installed on the density meter flushing pipeline; through the setting of the density meter flushing pipeline and the density meter flushing electric valve, two independent measuring points can be provided by the two density meter interfaces, the redundancy and accuracy of measurement are increased, and online timed flushing of the density meter interface is allowed, so that the measurement error caused by particulate matter or impurities is effectively reduced, the density meter probe is always kept clean, and the stability and reliability of measurement are improved.

[0013] Optionally, the two density meter interfaces and the pressure transmitter interface are inclined by 45° on the side wall of the measuring barrel.

[0014] By adopting the above technical scheme, the density meter interface and the pressure transmitter interface are inclined by 45° on the side wall of the measuring barrel; through the setting of the installation angle, the risk of blockage is reduced, the particulate or impurities are more easily washed away, the density meter interface or the pressure transmitter interface is blocked, and the flow state of the fluid is optimized, the direct impact of the fluid on the interface is reduced, the turbulent flow and vortex phenomenon in the fluid are reduced, and the stability and accuracy of measurement are improved.

[0015] Optionally, the measuring barrel flushing pipeline is arranged on the reactant inlet, and a measuring barrel flushing electric valve for controlling on-off is arranged on the measuring barrel flushing pipeline.

[0016] By adopting the technical scheme, the measuring bucket flushing pipeline is installed at the washing hole of the reagent inlet, and the measuring bucket flushing electric valve is installed on the measuring bucket flushing pipeline; when the pressure transmitter detects that the pressure in the measuring bucket is too high or higher than the set value, the device automatically closes the reagent inlet electric valve and opens the flushing electric valve to flush the deposited scale in the measuring bucket until the pressure in the measuring bucket is stable within the set range, and then the flushing electric valve is closed and the reagent inlet electric valve is opened; through the setting of the measuring bucket flushing pipeline and the measuring bucket flushing electric valve, the measuring bucket can be periodically flushed, the residual reagent, particles or other impurities attached to the bucket wall and internal components can be effectively removed, the cleanliness of the measuring bucket is ensured, the accuracy of subsequent measurement is improved, and the corrosion and wear of the equipment caused by residual substances can be reduced, thereby prolonging the service life of the measuring bucket and related components and reducing the replacement frequency and maintenance cost of the equipment.

[0017] Optionally, an overflow port for overflow protection is arranged on the side wall of the measuring bucket, and the overflow port is located above the discharge port and arranged at a high liquid level of the measuring bucket.

[0018] By adopting the technical scheme, the overflow port is communicated on the side wall of the measuring bucket; through the setting of the overflow port, the overflow protection is realized: the overflow port provides additional safety protection to prevent the measuring bucket from overflowing under abnormal conditions (such as excessive reagent flow, control system failure, etc.), ensures that the liquid level in the measuring bucket is always within a safe range, and improves the stability of the entire measurement and sampling system.

[0019] Optionally, an overflow discharge pipe is arranged on the overflow port, the inlet of the overflow discharge pipe is communicated with the outlet of the overflow port, and the outlet of the overflow discharge pipe is communicated with the outlet of the discharge port.

[0020] By adopting the technical scheme, the overflow discharge pipe is installed at the outlet of the overflow port; through the setting of the overflow discharge pipe, the overflow discharge pipe can quickly and effectively guide the excess reagent in the measuring bucket out of the preset liquid level, so that the reagent cannot overflow the measuring bucket, and the potential damage to the equipment and the surrounding environment is reduced.

[0021] Optionally, the inner diameter of the measuring bucket is greater than the inner diameter of the reagent inlet, and the arrangement height of the reagent inlet is lower than the arrangement height of the discharge port.

[0022] By adopting the technical scheme, the inner diameter of the measuring barrel is greater than the inner diameter of the reactant inlet, and the arrangement height of the reactant inlet is lower than the arrangement height of the discharge port; through the arrangement of the measuring barrel and the reactant inlet, the design that the inner diameter of the measuring barrel is greater than the inner diameter of the reactant inlet enables the reactant conveyed from the reactor to be effectively buffered when entering the measuring barrel, the buffering effect can reduce pressure fluctuation and flow rate change of the reactant when flowing, and helps to stabilize the pressure and liquid level in the measuring barrel; meanwhile, the arrangement mode of entering from the lower part and discharging from the upper part enables the reactant to form a certain liquid column height in the measuring barrel, further enhances the buffering and pressure equalizing effect, helps to reduce the measurement error caused by pressure fluctuation and flow rate change, and improves the accuracy and stability of instrument measurement.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] Through the arrangement of the measuring barrel, the PH meter interface, the density meter interface and the pressure transmitter interface, the device can monitor the key parameters of the reactant in real time, such as density and PH value, provide important feedback for the reaction condition in the production process, conveniently carry out sampling operation of the reactant, and further analyze and detect; the measuring instrument (such as the PH meter and the density meter) is isolated from the reactor body, the interference of the complex working condition in the reactor on the instrument measurement is reduced, the accuracy and stability of the measurement are improved, the maintenance and repair of the instrument are facilitated, the maintenance cost and work difficulty are reduced, the measurement interface of the reactant is transferred to the external measuring barrel, no additional hole needs to be opened on the outer wall of the reactor, the design and construction process are simplified, and finally the density meter interface and the pressure transmitter interface are arranged on the side wall of the measuring barrel, which can relieve the blockage problem caused by the slurry reactant, and further ensure the accuracy and stability of the measurement;

[0025] Through the arrangement of the density meter flushing pipeline and the density meter flushing electric valve, two independent measurement points can be provided by the two density meter interfaces, the redundancy and accuracy of measurement are increased, online timing flushing of the density meter interface is allowed, the measurement error caused by blockage of particles or impurities is effectively reduced, the density meter probe is kept clean at all times, and the stability and reliability of the measurement are improved;

[0026] Through the arrangement of the measuring barrel and the reactant inlet, the design that the inner diameter of the measuring barrel is greater than the inner diameter of the reactant inlet enables the reactant conveyed from the reactor to be effectively buffered when entering the measuring barrel, the buffering effect can reduce pressure fluctuation and flow rate change of the reactant when flowing, and helps to stabilize the pressure and liquid level in the measuring barrel; meanwhile, the arrangement mode of entering from the lower part and discharging from the upper part enables the reactant to form a certain liquid column height in the measuring barrel, further enhances the buffering and pressure equalizing effect, helps to reduce the measurement error caused by pressure fluctuation and flow rate change, and improves the accuracy and stability of instrument measurement. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic diagram of a multifunctional reagent measuring and sampling device in the embodiment of the present application.

[0028] Figure 2 is a top view of a multifunctional reagent measuring and sampling device in the embodiment of the present application.

[0029] Legend: 1, measuring barrel; 2, discharge port; 3, discharge valve; 4, overflow port; 5, overflow discharge pipe; 6, PH meter interface; 7, PH meter flushing pipe; 8, PH meter flushing electric valve; 9, density meter flushing electric valve; 10, density meter flushing pipeline; 11, density meter interface; 12, pressure transmitter interface; 13, reagent inlet; 14, inlet electric valve; 15, measuring barrel flushing pipeline; 16, measuring barrel flushing electric valve. DETAILED DESCRIPTION

[0030] The following will be described in detail with reference to the accompanying drawings Figures 1-2 The present application will be further described in detail.

[0031] The embodiment of the present application discloses a multifunctional reagent measuring and sampling device. Referring to Figure 1 , the multifunctional reagent measuring and sampling device, the device is a cylindrical pipeline structure and is provided with various interfaces with different functions, including a measuring barrel 1, which is cylindrical in the embodiment. A reagent inlet 13 is formed at the bottom of the measuring barrel 1, and the reagent inlet 13 is connected to the inside of the measuring barrel 1. In the embodiment, the reagent measuring interface is transferred to the external measuring barrel 1, and the number of reagent inlets 13 can be increased or decreased as needed, without the need to additionally open holes on the outer wall of the reactor, thereby simplifying the construction.

[0032] Referring to Figure 1 , an inlet electric valve 14 is installed at the reagent inlet 13, and the inlet electric valve 14 is used to control the on-off; a measuring barrel flushing pipeline 15 is installed between the reagent inlet 13 and the inlet electric valve 14, and in the embodiment, a washing hole can be formed on the pipeline between the reagent inlet 13 and the inlet electric valve 14 to connect the measuring barrel flushing pipeline 15. Meanwhile, a measuring barrel flushing electric valve 16 is installed on the measuring barrel flushing pipeline 15, and the on-off of the measuring barrel flushing pipeline 15 is controlled by the measuring barrel flushing electric valve 16; the measuring barrel 1 can be periodically flushed, effectively removing the residual reagent, particulate matter or other impurities attached to the barrel wall and internal components, ensuring the cleanliness of the inside of the measuring barrel 1, improving the accuracy of subsequent measurement, and also reducing the corrosion and wear of the equipment caused by residual substances, thereby prolonging the service life of the measuring barrel 1 and related components, and reducing the replacement frequency and maintenance cost of the equipment.

[0033] Referring to Figure 1The pressure transmitter interface 12 is communicated on the side wall of the measuring barrel 1, and in the embodiment, the pressure transmitter interface 12 is provided with a remote pressure transmitter. The pressure transmitter interface 12 is obliquely arranged on the measuring barrel 1, and in the embodiment, the pressure transmitter interface 12 is arranged at an angle of 45° with the side wall of the measuring barrel 1. When the pressure transmitter detects that the pressure in the measuring barrel 1 is too high or higher than the set value, the device automatically closes the reactant inlet electric valve 14, and simultaneously opens the measuring barrel flushing electric valve 16 to flush the deposited scale in the measuring barrel 1 until the pressure in the measuring barrel 1 is stabilized within the set range.

[0034] With reference to Figure 1 and Figure 2 The PH meter interface 6 and the density meter interface 11 are communicated on the measuring barrel 1, and the PH meter interface 6 is arranged on the top of the measuring barrel 1. In the embodiment, the number of the PH meter interface 6 is two, and the two PH meter interfaces 6 are commonly communicated with the PH meter flushing pipe 7. The two PH meter interfaces 6 are provided with washing water holes at the pipe joints, and the PH meter flushing pipe 7 is connected through the washing water holes. The PH meter flushing pipe 7 is provided with the PH meter flushing electric valve 8, and the on-off of the flushing water is controlled by the PH meter flushing electric valve 8. The on-line and timed flushing of the PH meter electrode is realized, the inaccuracy or failure of the PH meter electrode caused by the scale or blockage in the use process is effectively reduced, the impurities or particulate matters can be timely removed, and the PH meter can always accurately measure the PH value of the reactant. The instruments and electric valves of the device can be brought into the remote PLC or DCS control, the automation degree of the whole system is improved, manual intervention is not needed, the work efficiency is improved, and the operation difficulty and human error are reduced.

[0035] With reference to Figure 1 The density meter interface 11 is obliquely arranged on the side wall of the measuring barrel 1, and in the embodiment, the density meter interface 11 is arranged at an angle of 45° with the side wall of the measuring barrel 1. In the embodiment, the number of the density meter interface 11 is two, and the two density meter interfaces 11 are arranged on the same side of the measuring barrel 1. The two density meter interfaces 11 are commonly provided with the density meter flushing pipe 10. The two density meter interfaces 11 are provided with washing water holes at the pipe joints, and the density meter flushing pipe 10 is connected through the washing water holes. The density meter flushing pipe 10 is provided with the density meter flushing electric valve 9, and the on-off of the flushing water is controlled by the density meter flushing electric valve 9. The density meter flushing pipe 10 is communicated with the inlet of the PH meter flushing pipe 7. The two density meter interfaces 11 can provide two independent measuring points, increase the redundancy and accuracy of the measurement, allow the on-line and timed flushing of the density meter interface 11, effectively reduce the measurement error caused by the particulate matters or impurities, ensure that the density meter probe is always clean, and improve the stability and reliability of the measurement.

[0036] With reference to Figure 1The measuring barrel 1 is communicated with a discharge port 2, the discharge port 2 is located on the side of the measuring barrel 1 away from the densimeter interface 11, a discharge valve 3 is installed at the discharge port 2, the discharge valve 3 is in a closed state in normal operation of the discharge port 2, the discharge valve 3 is opened to empty only when the system is shut down for cleaning, and the reaction agent inlet 13 is arranged at a height lower than that of the discharge port 2, the reaction agent flows from low to high, and the inner diameter of the measuring barrel 1 is greater than that of the reaction agent inlet 13.

[0037] With reference to Figure 1 In the embodiment, all the valves in the device are electrically operated on-off valves, and all the remote instruments and electrically operated valves can be controlled by remote PLC or DCS, so that the pipeline can be controlled remotely without local operation.

[0038] With reference to Figure 1 The measuring barrel 1 is communicated with an overflow port 4, the overflow port 4 is arranged above the discharge port 2, and the overflow port 4 is arranged at a high liquid level of the measuring barrel 1. The overflow port 4 provides additional safety protection to prevent overflow of the measuring barrel 1 under abnormal conditions (such as excessive reaction agent flow, control system failure, etc.), ensures that the liquid level in the measuring barrel 1 always remains within a safe range, and improves the stability of the entire measuring and sampling system.

[0039] With reference to Figure 1 The overflow port 4 is communicated with an overflow discharge pipe 5, the inlet end of the overflow discharge pipe 5 is communicated with the outlet of the overflow port 4, and the outlet end of the overflow discharge pipe 5 is communicated with the outlet of the discharge port 2. In the embodiment, the discharge port 2 and the overflow port 4 converge into a mother pipe for external discharge or sampling. The overflow discharge pipe 5 can quickly and effectively guide the excess reaction agent in the measuring barrel 1 beyond the preset liquid level out of the measuring barrel 1, ensuring that the reaction agent does not overflow the measuring barrel 1 and reducing potential damage to the equipment and the surrounding environment.

[0040] The implementation principle of the multifunctional reaction agent measuring and sampling device is as follows: when the reaction agent is monitored, the inlet electric valve 14 is opened, the reaction agent enters the measuring barrel 1 through the reaction agent inlet 13 at the bottom, since the reaction agent inlet 13 is arranged at the bottom of the measuring barrel 1, the reaction agent conveyed from the reactor can be buffered, then in the measuring barrel 1, the reaction agent can be measured for various parameters through the PH meter interface 6 at the top and the density meter interface 11 and the pressure transmitter interface 12 arranged obliquely on the side wall, wherein the PH meter interface 6 is used for connecting a PH meter to measure the acidity and alkalinity of the reaction agent, the density meter interface 11 is used for connecting a density meter to measure the density of the reaction agent, and the pressure transmitter interface 12 is used for connecting a pressure transmitter to monitor the pressure in the measuring barrel 1 in real time, finally, when the reaction agent in the measuring barrel 1 needs to be discharged, the discharge valve 3 arranged at the discharge port 2 is opened to discharge the reaction agent from the measuring barrel 1;

[0041] During the measurement process, in order to prevent the PH meter electrode and the density meter probe from being blocked due to fouling, the PH meter flushing electric valve 8 and the density meter flushing electric valve 9 on the PH meter flushing water pipe and the density meter flushing water pipe can be opened to control the flow of flushing water respectively, so as to realize online timing flushing and ensure the cleanliness of the instrument and the accuracy of the measurement;

[0042] In addition, when the pressure transmitter detects that the pressure in the measuring barrel 1 is too high or higher than the set value, the device automatically closes the reaction agent inlet electric valve 14, and simultaneously opens the measuring barrel flushing electric valve 16 to flush the deposition and fouling in the measuring barrel 1, until the pressure in the measuring barrel 1 is stabilized within the set range, then the measuring barrel flushing electric valve 16 is closed, and the reaction agent inlet electric valve 14 is opened again to continue the measurement and sampling of the reaction agent;

[0043] Through the arrangement of the measuring barrel 1, the PH meter interface 6, the density meter interface 11 and the pressure transmitter interface 12, the device can monitor the key parameters of the reaction agent in real time, such as the density and the PH value, provide important feedback for the reaction condition in the production process, conveniently perform the sampling operation of the reaction agent, so as to further analyze and detect, the measuring instrument (such as the PH meter and the density meter) is isolated from the reactor body, the interference of the complex working condition in the reactor on the measurement of the instrument is reduced, the accuracy and stability of the measurement are improved, the maintenance and repair of the instrument are facilitated, the maintenance cost and the working difficulty are reduced, meanwhile, the device shifts the measurement interface of the reaction agent to the external measuring barrel 1, without the need of additional holes on the outer wall of the reactor, the design and construction process are simplified, finally, the density meter interface 11 and the pressure transmitter interface 12 are arranged obliquely on the side wall of the measuring barrel 1, which can relieve the blockage problem caused by the slurry reaction agent, and further ensure the accuracy and stability of the measurement.

[0044] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A multi-functional reactive agent measurement sampling device characterized by: The utility model relates to a kind of reaction agent measuring device, including measuring barrel (1), reaction agent inlet (13) and discharge port (2) are respectively opened on the measuring barrel (1), the reaction agent inlet (13) is set to measuring barrel (1) bottom, inlet motor valve (14) is arranged at the reaction agent inlet (13), the discharge port (2) is set to measuring barrel (1) side wall, discharge valve (3) is arranged at the discharge port (2), PH meter interface (6), densimeter interface (11) and pressure transmitter interface (12) are arranged on the measuring barrel (1), the PH meter interface (6) is set to measuring barrel (1) top, the densimeter interface (11) and pressure transmitter interface (12) are both inclinedly arranged on measuring barrel (1) side wall.

2. The multi-functional reactive agent measuring and sampling device according to claim 1, characterized by: The number of the PH meter interface (6) is two, and the two PH meter interfaces (6) are commonly provided with a PH meter flushing pipe (7) for flushing.

3. The multi-functional reactive agent measuring and sampling device according to claim 2, wherein: The number of the densimeter interface (11) is two, and the two densimeter interfaces (11) are arranged on the same side of the measuring barrel (1), and the two densimeter interfaces (11) are commonly provided with a densimeter flushing pipeline (10) for flushing.

4. The multi-functional reactive agent measuring and sampling device according to claim 3, wherein: The two densimeter interfaces (11) and the pressure transmitter interface (12) are both inclined by 45° on the side wall of the measuring barrel (1).

5. The multi-functional reactive agent measuring and sampling device according to claim 1, wherein: The reaction agent inlet (13) is provided with a measuring barrel flushing pipeline (15), and the measuring barrel flushing pipeline (15) is provided with a measuring barrel flushing motor valve (16) for controlling on-off.

6. The multi-functional reactive agent measuring and sampling device according to claim 1, wherein: The side wall of the measuring barrel (1) is provided with an overflow port (4) for anti-overflow protection, and the overflow port (4) is located above the discharge port (2).

7. The multi-functional reactive agent measuring and sampling device according to claim 6, wherein: The overflow port (4) is provided with an overflow discharge pipe (5), and the inlet of the overflow discharge pipe (5) is communicated with the outlet of the overflow port (4).

8. The multi-functional reactive agent measuring and sampling device according to claim 1, wherein: The inner diameter of the measuring barrel (1) is greater than the inner diameter of the reaction agent inlet (13), and the arrangement height of the reaction agent inlet (13) is lower than the arrangement height of the discharge port (2).

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