Novel double-alkali analyzer

Abstract

The invention relates to the technical field of double-alkali analyzers, and discloses a novel double-alkali analyzer which comprises a shell, a partition plate is fixedly mounted in the shell, supporting legs are fixedly mounted at the bottom of the shell, a box door is hinged to the front side of the inner wall of the shell, and a heat dissipation opening is formed in the right side of the inner wall of the shell. A touch display screen, a USB interface and a power switch located below the USB interface are fixedly installed on the front side of the shell, a network interface is fixedly installed on the left side of the shell, and a cable interface is fixedly installed on the left side of the shell. According to the novel double-alkali analyzer, by arranging the filtering mechanism, the purpose of filtering an extracted sample can be achieved, and by arranging the liquid inlet pipe, the buffer bottle mechanism, the conveying mechanism, the feeding mechanism, the discharging mechanism and the analysis mechanism, the purpose that the technical route is simple and convenient is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of double-alkali analyzers, and particularly to a novel double-alkali analyzer. Background Art

[0002] Double-alkali analysis usually refers to the double-indicator method, which is a method for analyzing the content of each component in a mixed alkali. By using two different indicators, two obvious color changes can be observed during a titration process, so as to determine two different stoichiometric points, and calculate the content of each component in the mixed alkali accordingly. The existing technical solutions have the following defects: The process is roughly divided into sampling, titration, calculation, discharge, and flushing, etc. First, a certain amount of sample is drawn into a titration flask, and stirring is continuously carried out while titrating hydrochloric acid. After reaching two titration endpoints successively, calculations are carried out. After the calculation is completed, discharge and flushing are carried out. This technical route is time-consuming, has a complex structure and is expensive. Moreover, when sampling, the sample cannot be effectively filtered, resulting in impurities in the sample and affecting the analysis results. Therefore, a novel double-alkali analyzer is proposed to solve the above-mentioned problems. Summary of the Invention

[0003] (1) Technical Problems to be Solved

[0004] Aiming at the deficiencies of the prior art, the present invention provides a novel double-alkali analyzer, which has the advantages of a simple and convenient technical route and can filter the sampled sample, and solves the problems mentioned in the above background art.

[0005] (2) Technical Solutions

[0006] To achieve the purpose of simple and convenient implementation of the above technical route and filtering of the extracted samples, the present invention provides the following technical solution: a new type of double-alkali analyzer, including a housing, a partition is fixedly installed inside the housing, support legs are fixedly installed at the bottom of the housing, a box door is hinged to the front side of the inner wall of the housing, a heat dissipation port is opened on the right side of the inner wall of the housing, a touch display screen is fixedly installed on the front side of the housing, a USB interface is fixedly installed on the front side of the housing, a power switch is fixedly installed on the front side of the housing and is located below the USB interface, a network interface is fixedly installed on the left side of the housing, a cable interface is fixedly installed on the left side of the housing, a filtering mechanism is arranged at the top of the partition, a liquid inlet pipe runs through the partition and extends to the left side of the housing on the left side of the filtering mechanism, a buffer bottle mechanism extending from the bottom of the partition to its top is arranged at the bottom of the partition, a conveying mechanism connected to the filtering mechanism and the buffer bottle mechanism is arranged at the top of the partition, a feeding mechanism with one end extending to the inside of the buffer bottle mechanism and the other end extending to the right side of the housing is arranged on the right side of the inner wall of the housing, a discharging mechanism running through the partition and extending to the inside of the buffer bottle mechanism is arranged on the inner bottom wall of the housing, the discharging mechanism extends to the right side of the housing, an analyzing mechanism connected to the discharging mechanism is arranged on the inner bottom wall of the housing, the analyzing mechanism is connected to the top of the partition and extends to the inside of the buffer bottle mechanism, and a stirrer extending to its inside is arranged at the bottom of the buffer bottle mechanism.

[0007] Preferably, the filtering mechanism includes a filtering box, the filtering box is fixedly installed at the top of the partition, the top end of the liquid inlet pipe extends to the inside of the filtering box, a fixed clamping seat is fixedly installed at the top of the filtering box, a placing frame is fixedly installed between the upper and lower sides of the inner wall of the filtering box, a filter net extending to the top of the filtering box is movably installed between the two placing frames, an installation frame fitting with the fixed clamping seat is fixedly installed at the top of the filter net, two fixing plates are slidably installed between the upper and lower sides of the inner wall of the installation frame, two clamping blocks respectively extending to the front and rear sides of the installation frame are slidably installed inside the installation frame, the two clamping blocks are respectively clamped with the two fixed clamping seats, a telescopic spring is fixedly installed between the fixing plate and the clamping block, a connecting rod running through the telescopic spring and the fixing plate is fixedly installed on one side of the clamping block, a moving plate extending to the top of the installation frame is fixedly installed at one end of the connecting rod, and a circular ring is fixedly installed at the top of the moving plate.

[0008] Preferably, the buffer bottle mechanism includes a buffer bottle main body, the buffer bottle main body extending from the bottom of the partition to its top is fixedly installed at the bottom of the partition, the buffer bottle main body is located on the right side of the filtering box, and a cover body is movably installed at the top of the buffer bottle main body.

[0009] Preferably, the conveying mechanism includes a filtrate bottle. A filtrate bottle is fixedly installed at the top of the partition plate on the left side of the buffer bottle body. A vacuum pump is fixedly installed at the top of the partition plate on the left side of the filtrate bottle. The liquid outlet end of the vacuum pump is fixedly installed with a first infusion tube extending to the inside of the filtrate bottle. The liquid inlet end of the vacuum pump is fixedly installed with a second infusion tube extending to the inside of the filter box. The top of the filtrate bottle is fixedly installed with a constant-speed conveying pump. The liquid inlet end of the constant-speed conveying pump is fixedly installed with a third infusion tube extending to the inside of the filtrate bottle. The liquid outlet end of the constant-speed conveying pump is fixedly installed with a fourth infusion tube passing through the cover body and extending to the inside of the buffer bottle body.

[0010] Preferably, the feeding mechanism includes a feeding pump. A feeding pump is fixedly installed on the right inner wall of the housing. The liquid inlet end of the feeding pump is fixedly installed with a feeding tube extending to the right side of the housing. The liquid outlet end of the feeding pump is fixedly installed with a feeding pipe passing through the cover body and extending to the inside of the buffer bottle body.

[0011] Preferably, the discharging mechanism includes a collection box. A collection box fixedly connected to the right inner wall of the housing is fixedly installed on the inner bottom wall of the housing. A discharging pump is fixedly installed on the top of the collection box. The input end of the discharging pump is fixedly installed with a liquid discharging connecting pipe passing through the cover body and extending to the inside of the buffer bottle body. The output end of the discharging pump is fixedly installed with a discharging pipe extending to the inside of the collection box. A liquid discharging pipe extending to the right side of the housing is fixedly installed on the right inner wall of the collection box.

[0012] Preferably, the analysis mechanism includes a mounting rack. A mounting rack is fixedly installed on the inner bottom wall of the housing on the left side of the collection box. A circulation box is fixedly installed on the top of the mounting rack. A pH meter extending to the inside thereof is movably installed on the top of the circulation box. A pump body is fixedly installed on the top of the partition plate on the front side of the buffer bottle body. The liquid inlet end of the pump body is fixedly installed with a communicating pipe passing through the cover body and extending to the inside of the buffer bottle body. The liquid outlet end of the pump body is fixedly installed with a liquid discharging pipe passing through the partition plate and extending to the inside of the circulation box. A connecting hose extending to the inside of the collection box is fixedly installed on the right inner wall of the circulation box.

[0013] Preferably, the stirrer is composed of a motor rack, a stirring motor and stirring blades. A motor rack is fixedly installed at the bottom of the buffer bottle body. A stirring motor is fixedly installed inside the motor rack. The output shaft of the stirring motor extends to the inside of the buffer bottle body and is fixedly installed with stirring blades.

[0014] Preferably, through holes adapted to the clamping blocks are formed on both the front and rear sides of the inner wall of the mounting frame. The number of the filter nets is two. The number of the placing frames is four, and two of them are distributed symmetrically left and right as a group.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present invention provides a novel double-alkali analyzer, which has the following beneficial effects:

[0017] 1. For this novel double-alkali analyzer, by setting a filtering mechanism, which consists of a filtering box, a double-layer detachable filter screen, a fixed card seat and a locking structure. When installing the filter screen, the filter screen is pushed down by the installation frame so that it extends to the inside of the placement frame. When the clamping block contacts the fixed card seat, it is squeezed and moves. The clamping block pushes the connecting rod to move and compress the telescopic spring. When the clamping block extends to the inside of the fixed card seat, the telescopic spring pushes the clamping block to reset and engage with the fixed card seat. The solution to be measured enters the filtering box through the liquid inlet pipe, and impurities are removed through the two-layer filter screen to ensure the accuracy of subsequent analysis. When the filter screen needs to be replaced, pull the ring, so that the moving plate drives the connecting rod and the clamping block to move and disengage from the fixed card seat, and it can be quickly disassembled, achieving the purpose of filtering the extracted sample.

[0018] 2. For this novel double-alkali analyzer, by setting a liquid inlet pipe, a buffer bottle mechanism, a conveying mechanism, a feeding mechanism, a discharging mechanism and an analysis mechanism. First, the discharging pump extracts the residual liquid in the buffer bottle main body through the liquid discharging connecting pipe, discharges it into the collecting box through the discharging pipe, and finally discharges it through the liquid discharging pipe for centralized treatment, and removes the bubbles attached to the pH meter in the circulation box. Subsequently, the vacuum pump extracts the filtered solution to the filtrate bottle through the second infusion pipe, and the constant-speed conveying pump conveys the filtrate to the buffer bottle main body at a constant speed to ensure stable subsequent reaction conditions. Before inputting the sample, start the feeding pump to inhale hydrochloric acid through the feeding pipe, inject it into the buffer bottle main body through the blanking pipe, and at the same time start the stirrer, and the motor drives the stirring blades to rotate to ensure that the filtrate and the alkali solution are fully mixed and accelerate the neutralization reaction to achieve the solution ratio. The sample after adding hydrochloric acid flows into the circulation box, and the pump body extracts the mixed liquid to the circulation box. The amount of hydrochloric acid added and the pH value form a control loop, and are calculated by PID. The set value of the control loop is the titration end point. The pH meter monitors the change of the pH value in real time, and the analyzed data is displayed on the touch display screen and supports export to external devices through the USB interface. There are two titration end points. After the first titration end point is completed, it automatically enters the second titration end point. After the two titration end points are completed, the results are calculated simultaneously. The remaining solution is discharged into the collecting box through the connecting hose to avoid cross contamination, achieving the purpose of a simple and convenient technical route. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structure diagram of the present invention;

[0020] Figure 2 is a right three-dimensional structure diagram of the present invention;

[0021] Figure 3 is a partial sectional three-dimensional structure diagram of the present invention;

[0022] Figure 4This is the right - view sectional three - dimensional drawing of the local structure of the present invention;

[0023] Figure 5 This is the sectional three - dimensional drawing of the local structure of the present invention;

[0024] Figure 6 This is the right - view sectional three - dimensional drawing of the local structure of the present invention;

[0025] Figure 7 This is the right - view sectional three - dimensional drawing of the local structure of the present invention;

[0026] Figure 8 This is the exploded view of the right - view section of the local structure of the present invention;

[0027] Figure 9 This is the exploded view of the right - view section of the local structure of the present invention.

[0028] In the figure: 1 housing, 2 partition board, 3 filtering mechanism, 301 filtering box, 302 fixed clamping seat, 303 placing frame, 304 filter screen, 305 mounting frame, 306 fixing plate, 307 clamping block, 308 telescopic spring, 309 connecting rod, 310 moving plate, 311 ring, 4 inlet pipe, 5 buffer bottle mechanism, 51 buffer bottle body, 52 cover body, 6 conveying mechanism, 61 filtrate bottle, 62 vacuum pump, 63 first infusion pipe, 64 second infusion pipe, 65 constant - speed conveying pump, 66 second infusion pipe, 67 fourth infusion pipe, 7 feeding mechanism, 71 feeding pump, 72 feed pipe, 73 blanking pipe, 8 discharging mechanism, 81 collection box, 82 discharging pump, 83 liquid - discharging connecting pipe, 84 discharging pipe, 85 liquid - discharging pipe, 9 analysis mechanism, 91 mounting rack, 92 circulation box, 93 pH meter, 94 pump body, 95 connecting pipe, 96 lower liquid pipe, 97 connecting hose, 10 stirrer, 11 support leg, 12 box door, 13 heat dissipation port, 14 touch display screen, 15 USB interface, 16 power switch, 17 network interface, 18 cable interface. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1-9, the present invention provides a technical solution: a new type of double-alkali analyzer, which includes a housing 1. Inside the housing 1, a partition 2 is fixedly installed. At the bottom of the housing 1, support legs 11 are fixedly installed. On the front side of the inner wall of the housing 1, a box door 12 is hinged. On the right side of the inner wall of the housing 1, a heat dissipation port 13 is opened. On the front side of the housing 1, a touch display screen 14 is fixedly installed. The analysis results are automatically saved to the built-in memory of the touch display screen 14. On the front side of the housing 1, a USB interface 15 is fixedly installed. On the front side of the housing 1, a power switch 16 is fixedly installed below the USB interface 15. On the left side of the housing 1, a network interface 17 is fixedly installed, and it is uploaded to the laboratory management system through the network interface 17, supporting multi-device data synchronization. On the left side of the housing 1, a cable interface 18 is fixedly installed. At the top of the partition 2, a filtering mechanism 3 is provided. On the left side of the filtering mechanism 3, a liquid inlet pipe 4 is provided which penetrates through the partition 2 and extends to the left side of the housing 1. At the bottom of the partition 2, a buffer bottle mechanism 5 is provided which extends to its top. At the top of the partition 2, a conveying mechanism 6 is provided which is connected to the filtering mechanism 3 and the buffer bottle mechanism 5. On the right side of the inner wall of the housing 1, a feeding mechanism 7 is provided with one end extending to the inside of the buffer bottle mechanism 5 and the other end extending to the right side of the housing 1. On the inner bottom wall of the housing 1, a discharging mechanism 8 is provided which penetrates through the partition 2 and extends to the inside of the buffer bottle mechanism 5. The discharging mechanism 8 extends to the right side of the housing 1. On the inner bottom wall of the housing 1, an analysis mechanism 9 is provided which is connected to the discharging mechanism 8. The analysis mechanism 9 is connected to the top of the partition 2 and extends to the inside of the buffer bottle mechanism 5. At the bottom of the buffer bottle mechanism 5, a stirrer 10 is provided which extends to its inside.

[0031] The stirrer 10 is composed of a motor frame, a stirring motor and stirring blades. At the bottom of the buffer bottle main body 51, a motor frame is fixedly installed. Inside the motor frame, a stirring motor is fixedly installed. The output shaft of the stirring motor extends to the inside of the buffer bottle main body 51 and is fixedly installed with stirring blades.

[0032] The filtering mechanism 3 includes a filtering box 301. The top of the partition plate 2 is fixedly installed with the filtering box 301. One end of the top of the liquid inlet pipe 4 extends to the inside of the filtering box 301. The top of the filtering box 301 is fixedly installed with a fixed clamping seat 302. Between the upper and lower sides of the inner wall of the filtering box 301, a placement frame 303 is fixedly installed. A filter net 304 extending to the top of the filtering box 301 is movably installed between the two placement frames 303. An installation hole adapted to the filter net 304 is opened on the inner top wall of the filtering box 301. The top of the filter net 304 is fixedly installed with an installation frame 305 that fits with the fixed clamping seat 302. Between the upper and lower sides of the inner wall of the installation frame 305, two fixing plates 306 are slidably installed. Inside the installation frame 305, two clamping blocks 307 are slidably installed and respectively extend to the front and rear sides thereof. The bottom of the clamping block 307 is designed to be inclined, facilitating the automatic retraction when the clamping block 307 is squeezed. A clamping groove adapted to the clamping block 307 is opened on the inner side of the fixed clamping seat 302. The two clamping blocks 307 are respectively clamped with the two fixed clamping seats 302. A telescopic spring 308 is fixedly installed between the fixing plate 306 and the clamping block 307. The elastic coefficient of the telescopic spring 308 can be set according to requirements. One side of the clamping block 307 is fixedly installed with a connecting rod 309 passing through the telescopic spring 308 and the fixing plate 306. One end of the connecting rod 309 is fixedly installed with a moving plate 310 extending to the top of the installation frame 305. The top of the moving plate 310 is fixedly installed with a circular ring 311. The outer side of the circular ring 311 is wrapped with a sponge sleeve.

[0033] Through holes adapted to the clamping blocks 307 are opened on both the front and rear sides of the inner wall of the installation frame 305. The number of the filter nets 304 is two. The design of the double-layer filter net 304 intercepts impurities and protects the analysis samples. The number of the placement frames 303 is four, and two of them are in a left-right symmetric distribution as a group.

[0034] The buffer bottle mechanism 5 includes a buffer bottle main body 51. The bottom of the partition plate 2 is fixedly installed with the buffer bottle main body 51 extending to its top. The top of the buffer bottle main body 51 is designed to be flared. The buffer bottle main body 51 is located on the right side of the filtering box 301. A cover body 52 is movably installed on the top of the buffer bottle main body 51.

[0035] The conveying mechanism 6 includes a filtrate bottle 61. The top of the partition plate 2 is fixedly installed with a filtrate bottle 61 located on the left side of the buffer bottle body 51. The top of the partition plate 2 is fixedly installed with a vacuum pump 62 located on the left side of the filtrate bottle 61. When the vacuum pump 62 is started, a negative pressure (≤ -0.08 MPa) is formed in the filtration box 301 through the second infusion tube 64. The filtrate enters the filtrate bottle 61 at a rate of 300 - 500 mL / min. The liquid outlet end of the vacuum pump 62 is fixedly installed with a first infusion tube 63 extending to the inside of the filtrate bottle 61. The liquid inlet end of the vacuum pump 62 is fixedly installed with a second infusion tube 64 extending to the inside of the filtration box 301. The top of the filtrate bottle 61 is fixedly installed with a constant-speed delivery pump 65. The constant-speed delivery pump 65 injects the filtrate into the buffer bottle body 51 through the fourth infusion tube 67 at a preset flow rate (such as 50 mL / min) to ensure accurate mixing ratio. The constant-speed delivery pump 65 is internally driven by a stepper motor with a flow error ≤ ±1%. The liquid inlet end of the constant-speed delivery pump 65 is fixedly installed with a third infusion tube 66 extending to the inside of the filtrate bottle 61. The liquid outlet end of the constant-speed delivery pump 65 is fixedly installed with a fourth infusion tube 67 that penetrates the cover body 52 and extends to the inside of the buffer bottle body 51.

[0036] The feeding mechanism 7 includes a feeding pump 71. The feeding pump 71 is fixedly installed on the right inner wall of the housing 1. The liquid inlet end of the feeding pump 71 is fixedly installed with a feeding tube 72 extending to the right side of the housing 1. The liquid outlet end of the feeding pump 71 is fixedly installed with a feeding pipe 73 that penetrates the cover body 52 and extends to the inside of the buffer bottle body 51. The feeding pipe 73 and the cover body 52 adopt a silicone rubber sealing ring, which effectively plays a role in preventing leakage.

[0037] The discharging mechanism 8 includes a collection box 81. The collection box 81 is fixedly installed on the inner bottom wall of the housing 1 and is fixedly connected to the right inner wall of the housing 1. The top of the collection box 81 is fixedly installed with a discharging pump 82. The input end of the discharging pump 82 is fixedly installed with a liquid discharge connecting pipe 83 that penetrates the cover body 52 and extends to the inside of the buffer bottle body 51. The output end of the discharging pump 82 is fixedly installed with a discharge pipe 84 extending to the inside of the collection box 81. The right inner wall of the collection box 81 is fixedly installed with a liquid discharge pipe 85 extending to the right side of the housing 1. The liquid discharge pipe 85 is equipped with a one-way valve to prevent the waste liquid from flowing back.

[0038] The analysis mechanism 9 includes a mounting frame 91. The inner bottom wall of the outer shell 1 is fixedly installed with the mounting frame 91 located on the left side of the collection box 81. The top of the mounting frame 91 is fixedly installed with a circulation box 92. The top of the circulation box 92 is movably installed with a pH meter 93 extending into its inner side. The pH meter 93 (accuracy ±0.01pH) monitors in real time, and the data is updated every 0.5 seconds. The top of the partition 2 is fixedly installed with a pump body 94 located on the front side of the buffer bottle body 51. The constant-speed delivery pump 65 cooperates with the pump body 91 to achieve precise regulation of the flow rate and pH value. The liquid inlet end of the pump body 94 is fixedly installed with a connecting pipe 95 passing through the cover body 52 and extending into the inner side of the buffer bottle body 51. The liquid outlet end of the pump body 94 is fixedly installed with a liquid-down pipe 96 passing through the partition 2 and extending into the inner side of the circulation box 92. The right side inner wall of the circulation box 92 is fixedly installed with a connecting hose 97 extending into the inner side of the collection box 81. The analyzed solution is discharged into the collection box 81 through the connecting hose 97 to avoid cross-contamination.

[0039] The stirrer 10, the vacuum pump 62, the constant-speed delivery pump 65, the delivery pump 71, the discharge pump 82, the pump body 94, and the touch display screen 14 are all electrically connected to an external power source and are controlled by a power switch 16.

[0040] During use, connect the power supply, turn on the power switch 16, the instrument performs self-check, set the analysis parameters through the touch display screen 14, connect the solution to be tested to the liquid inlet pipe 4, close the box door 12, start the vacuum pump 62, the solution enters the filtrate bottle 61 after being purified by two layers of filter screens 304, the constant-speed delivery pump 65 is started, the filtrate is transported to the buffer bottle body 51, the delivery pump 71 injects hydrochloric acid, the stirrer 10 is started to ensure uniform mixing, the pump body 94 extracts the mixed liquid to the circulation box 92, the pH meter 93 continuously monitors and displays the data, the analysis results can be exported through the USB interface 15 or uploaded to the laboratory management system through the network interface 17. After the analysis is completed, the discharge pump 82 automatically empties the buffer bottle body 51, open the box door 12, pull the ring 311 to replace the filter screen 304 to ensure the analysis accuracy next time.

[0041] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0042] In summary, for the new type of double-alkali analyzer, by setting up the filtering mechanism 3, which consists of a filtering box 301, a double-layer detachable filter screen 304, a fixed card seat 302 and a locking structure. When installing the filter screen 304, the filter screen 304 is pushed down by the installation frame 305 to extend it inside the placement frame 303. When the clamping block 307 contacts the fixed card seat 302, it is squeezed and moves. The clamping block 307 pushes the connecting rod 309 to move and compress the telescopic spring 308. When the clamping block 307 extends inside the fixed card seat 302, the telescopic spring 308 pushes the clamping block 307 to reset and engage with the fixed card seat 302. The solution to be measured enters the filtering box 301 through the liquid inlet pipe 4, and impurities are removed through the two-layer filter screen 304 to ensure the accuracy of subsequent analysis. When the filter screen 304 needs to be replaced, the ring 311 is pulled, so that the moving plate 310 drives the connecting rod 309 and the clamping block 307 to move and disengage from the fixed card seat 302, and it can be quickly disassembled, achieving the purpose of filtering the extracted sample. By setting up the liquid inlet pipe 4, the buffer bottle mechanism 5, the conveying mechanism 6, the feeding mechanism 7, the discharging mechanism 8 and the analysis mechanism 9, first, the discharging pump 82 pumps out the residual liquid in the buffer bottle body 51 through the liquid discharging connecting pipe 83, discharges it into the collection box 81 through the discharging pipe 84, and finally discharges it through the liquid discharging pipe 85 for centralized treatment, and the bubbles attached to the pH meter in the circulation box 92 are cleaned. Subsequently, the vacuum pump 62 extracts the filtered solution to the filtrate bottle 61 through the second infusion pipe 64, and the constant-speed conveying pump 65 conveys the filtrate to the buffer bottle body 51 at a constant speed to ensure stable subsequent reaction conditions. Before inputting the sample, the feeding pump 71 is started to inhale hydrochloric acid through the feeding pipe 72 and inject it into the buffer bottle body 51 through the blanking pipe 73, and at the same time, the stirrer 10 is started, and the motor drives the stirring blades to rotate to ensure full mixing of the filtrate and the alkali solution, accelerating the neutralization reaction and realizing the solution ratio. The sample after adding hydrochloric acid flows into the circulation box 92, and the pump body 94 extracts the mixed liquid to the circulation box 92. The amount of hydrochloric acid added and the pH value form a control loop and are calculated by PID. The set value of the control loop is the titration end point. The pH meter 93 monitors the change of the pH value in real time. The analyzed data is displayed on the touch display screen 14 and supports export to external devices through the USB interface 15. There are two titration end points. After the first titration end point is completed, it automatically enters the second titration end point. After the two titration end points are completed, the results are calculated at the same time. The remaining solution is discharged into the collection box 81 through the connecting hose 97 to avoid cross-contamination, achieving the purpose of a simple and convenient technical route, and solving the problem that its process is roughly divided into sampling, titration, calculation, discharge and flushing, etc. First, a certain amount of sample is extracted into the titration flask, and continuous stirring is carried out while titrating hydrochloric acid. After reaching the two titration end points successively, calculation is carried out. After the calculation is completed, discharge and flushing are carried out. This technical route is time-consuming, has a complex structure and is expensive, and when extracting the sample, it cannot be effectively filtered, resulting in impurities in the sample and affecting the analysis result.

[0043] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0044] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel double-alkali analyzer, comprising a housing (1), wherein a partition (2) is fixedly installed inside the housing (1), support legs (11) are fixedly installed at the bottom of the housing (1), a box door (12) is hinged to the front side of the inner wall of the housing (1), a heat dissipation port (13) is formed in the right side of the inner wall of the housing (1), a touch display screen (14) is fixedly installed on the front side of the housing (1), a USB interface (15) is fixedly installed on the front side of the housing (1), a power switch (16) is fixedly installed on the front side of the housing (1) and is located below the USB interface (15), a network interface (17) is fixedly installed on the left side of the housing (1), and a cable interface (18) is fixedly installed on the left side of the housing (1), characterized in that: A filtering mechanism (3) is provided at the top of the partition plate (2). An inlet liquid pipe (4) passing through the partition plate (2) and extending to the left side of the outer shell (1) is provided on the left side of the filtering mechanism (3). A buffer bottle mechanism (5) extending from the bottom of the partition plate (2) to its top is provided at the bottom of the partition plate (2). A conveying mechanism (6) connected to the filtering mechanism (3) and the buffer bottle mechanism (5) is provided at the top of the partition plate (2). A feeding mechanism (7) with one end extending to the inside of the buffer bottle mechanism (5) and the other end extending to the right side of the outer shell (1) is provided on the right inner wall of the outer shell (1). A discharging mechanism (8) passing through the partition plate (2) and extending to the inside of the buffer bottle mechanism (5) is provided on the inner bottom wall of the outer shell (1). The discharging mechanism (8) extends to the right side of the outer shell (1). An analyzing mechanism (9) connected to the discharging mechanism (8) is provided on the inner bottom wall of the outer shell (1). The analyzing mechanism (9) is connected to the top of the partition plate (2) and extends to the inside of the buffer bottle mechanism (5). A stirrer (10) extending to its inside is provided at the bottom of the buffer bottle mechanism (5).

2. The novel double-alkali analyzer according to claim 1, wherein: The filtering mechanism (3) includes a filtering box (301). The filtering box (301) is fixedly installed at the top of the partition plate (2). The top end of the inlet liquid pipe (4) extends to the inside of the filtering box (301). A fixed clamping seat (302) is fixedly installed at the top of the filtering box (301). A placing frame (303) is fixedly installed between the upper and lower sides of the inner wall of the filtering box (301). A filter net (304) extending to the top of the filtering box (301) is movably installed between the two placing frames (303). An installation frame (305) fitting with the fixed clamping seat (302) is fixedly installed at the top of the filter net (304). Two fixing plates (306) are slidably installed between the upper and lower sides of the inner wall of the installation frame (305). Two clamping blocks (307) respectively extending to the front and rear sides of the installation frame (305) are slidably installed inside the installation frame (305). The two clamping blocks (307) are respectively clamped with the two fixed clamping seats (302). A telescopic spring (308) is fixedly installed between the fixing plate (306) and the clamping block (307). A connecting rod (309) passing through the telescopic spring (308) and the fixing plate (306) is fixedly installed on one side of the clamping block (307). A moving plate (310) extending to the top of the installation frame (305) is fixedly installed at one end of the connecting rod (309). A circular ring (311) is fixedly installed at the top of the moving plate (310).

3. The novel double-alkali analyzer according to claim 2, characterized in that: The buffer bottle mechanism (5) includes a buffer bottle main body (51). The buffer bottle main body (51) extending from the bottom of the partition plate (2) to its top is fixedly installed at the bottom of the partition plate (2). The buffer bottle main body (51) is located on the right side of the filtering box (301). A cover body (52) is movably installed at the top of the buffer bottle main body (51).

4. The novel double-alkali analyzer according to claim 3, wherein: The conveying mechanism (6) includes a filtrate bottle (61). The filtrate bottle (61) located on the left side of the buffer bottle body (51) is fixedly installed at the top of the partition plate (2). The vacuum pump (62) located on the left side of the filtrate bottle (61) is fixedly installed at the top of the partition plate (2). The liquid outlet end of the vacuum pump (62) is fixedly installed with a first infusion tube (63) extending to the inside of the filtrate bottle (61). The liquid inlet end of the vacuum pump (62) is fixedly installed with a second infusion tube (64) extending to the inside of the filtration box (301). The constant-speed conveying pump (65) is fixedly installed at the top of the filtrate bottle (61). The liquid inlet end of the constant-speed conveying pump (65) is fixedly installed with a third infusion tube (66) extending to the inside of the filtrate bottle (61). The liquid outlet end of the constant-speed conveying pump (65) is fixedly installed with a fourth infusion tube (67) passing through the cover body (52) and extending to the inside of the buffer bottle body (51).

5. A novel double-alkali analyzer according to claim 3, characterized in that: The feeding mechanism (7) includes a feeding pump (71). The feeding pump (71) is fixedly installed on the right inner wall of the housing (1). The liquid inlet end of the feeding pump (71) is fixedly installed with a feeding tube (72) extending to the right side of the housing (1). The liquid outlet end of the feeding pump (71) is fixedly installed with a feeding pipe (73) passing through the cover body (52) and extending to the inside of the buffer bottle body (51).

6. A novel double-alkali analyzer according to claim 3, characterized in that: The discharging mechanism (8) includes a collection box (81). The collection box (81) fixedly connected to the right inner wall of the housing (1) is fixedly installed on the inner bottom wall of the housing (1). The discharging pump (82) is fixedly installed at the top of the collection box (81). The input end of the discharging pump (82) is fixedly installed with a liquid discharge connecting pipe (83) passing through the cover body (52) and extending to the inside of the buffer bottle body (51). The output end of the discharging pump (82) is fixedly installed with a discharge pipe (84) extending to the inside of the collection box (81). The liquid discharge pipe (85) extending to the right side of the housing (1) is fixedly installed on the right inner wall of the collection box (81).

7. A novel double-alkali analyzer according to claim 6, characterized in that: The analysis mechanism (9) includes a mounting rack (91). The mounting rack (91) located on the left side of the collection box (81) is fixedly installed on the inner bottom wall of the housing (1). The circulation box (92) is fixedly installed at the top of the mounting rack (91). The pH meter (93) extending to the inside thereof is movably installed at the top of the circulation box (92). The pump body (94) located in front of the buffer bottle body (51) is fixedly installed at the top of the partition plate (2). The liquid inlet end of the pump body (94) is fixedly installed with a communicating pipe (95) passing through the cover body (52) and extending to the inside of the buffer bottle body (51). The liquid outlet end of the pump body (94) is fixedly installed with a liquid downcomer (96) passing through the partition plate (2) and extending to the inside of the circulation box (92). The connecting hose (97) extending to the inside of the collection box (81) is fixedly installed on the right inner wall of the circulation box (92).

8. The novel double-alkali analyzer according to claim 3, wherein: The mixer (10) is composed of a motor frame, a stirring motor, and stirring blades. A motor frame is fixedly installed at the bottom of the buffer bottle body (51). A stirring motor is fixedly installed inside the motor frame. The output shaft of the stirring motor extends to the inside of the buffer bottle body (51) and is fixedly installed with stirring blades.

9. A novel double-alkali analyzer according to claim 2, characterized in that: Through holes adapted to the clamping blocks (307) are respectively opened on the front and rear sides of the inner wall of the installation frame (305). The number of the filter nets (304) is two. The number of the placement frames (303) is four, and two of them are in a group and are symmetrically distributed left and right.

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