An online chemical detection device and detection method for machine-made sand

Abstract

The present invention discloses an online chemical detection device for manufactured sand, comprising a frame, a chloride ion detection assembly, a methylene blue detection assembly, and a reclaiming mechanism. The methylene blue detection assembly and the chloride ion detection assembly are mounted on the frame in an upper and lower arrangement. The reclaiming mechanism is vertically mounted on the frame and passes through the chloride ion detection assembly and the methylene blue clamping assembly to automatically deliver the collected sand and gravel to the chloride ion detection assembly or the methylene blue detection assembly. The present invention enables online sampling and monitoring of manufactured sand at any time, and the automated detection process reduces labor input and achieves high detection efficiency.

Description

Technical Field

[0001] The present invention relates to the field of online detection of machine-made sand, and in particular to an online chemical detection device and method for machine-made sand. Background Art

[0002] In recent years, high-quality river sand resources have become increasingly scarce in my country. However, manufactured sand, with its abundant resources, controlled quality, and low cost, has been widely used in my country. As an important construction material, the quality of manufactured sand directly affects the quality of construction projects, so its technical indicators need to be tested one by one.

[0003] Particles in manufactured sand with a size less than 0.075mm are called stone dust. An appropriate amount of stone dust can improve the cohesiveness and water retention of the mix, enhance the interface properties of concrete, optimize the concrete particle size distribution, increase concrete density, and improve the overall performance of concrete. However, higher levels of stone dust can easily lead to adverse phenomena such as bleeding and honeycombing in concrete. Therefore, the stone dust content of manufactured sand is an important technical indicator for evaluating its performance, and is generally evaluated and measured by measuring the methylene blue (MB) value.

[0004] Studies have shown that the main reason for the premature loss of durability of reinforced concrete projects is corrosion caused by excessive chloride ion content in construction sand. Chloride ions exceeding the standard in sand and gravel will produce electrochemical reactions with steel bars, corroding the oxide film on the surface of the steel bars, thereby leading to rust and damage of the steel bars. At the same time, excessive chloride ion content will also cause the expansion and cracking of reinforced concrete, affecting the quality of the project. Therefore, chloride ion content is also another important technical indicator for evaluating the performance of machine-made sand.

[0005] Currently, the testing of machine-made sand is done manually in a specialized laboratory.

[0006] Currently, artificial sand testing is done by manually collecting samples and then manually testing them using testing equipment. The entire process relies heavily on manual experience, is complex and time-consuming, and is prone to poor accuracy. Summary of the Invention

[0007] Purpose of the invention: In order to address the deficiencies of the prior art, the present invention provides an online chemical detection device for machine-made sand, which enables online sampling and monitoring of machine-made sand at any time. The automated detection process reduces manual input and has high detection efficiency.

[0008] Technical solution: An online chemical detection device for machine-made sand, comprising a frame, a chloride ion detection component, a methylene blue detection component and a reclaiming mechanism, wherein the methylene blue detection component and the chloride ion detection component are installed on the frame in an upper and lower arrangement; the reclaiming mechanism is vertically installed on the frame, and passes through the chloride ion detection component and the methylene blue clamping component to automatically deliver the acquired sand and gravel to the chloride ion detection component or the methylene blue detection component.

[0009] Preferably, the chloride ion detection assembly includes a mounting plate, a conveying track fixed on the mounting plate, a loading mechanism located at one end of the conveying track, a feeding and stirring mechanism, a heating mechanism and a calibration and detection mechanism sequentially arranged on the side of the conveying track, and a waste hopper located at the other end of the conveying track. A transfer platform is provided on the conveying track, and the transfer platform loads the detection container and switches positions between the feeding mechanism, the feeding and stirring mechanism, the heating mechanism, the calibration and detection mechanism and the waste hopper.

[0010] Preferably, the methylene blue detection assembly includes a second mounting plate, a second conveying track fixed on the second mounting plate, a second loading mechanism and a drying mechanism located at one end of the second conveying track, a second feeding and stirring mechanism, a dripping mechanism and a filter paper conveying mechanism arranged on the side of the second conveying track, and a second waste hopper located at the other end of the second conveying track. A second transfer platform is provided on the second conveying track, and the second transfer platform loads the detection container and switches its position between the second feeding mechanism, the second feeding and stirring mechanism, the dripping mechanism and the second waste hopper.

[0011] Preferably, the feeding mechanism and the second feeding mechanism both include a support frame, a servo mounted on the support frame, a hopper fixed on the servo shaft and driven by the servo to flip at different angles, and a feed notch is provided at one end of the hopper and a discharge notch is provided at the other end.

[0012] Preferably, the feeding and stirring mechanism and the second feeding and stirring mechanism both include a fixed plate, a stirring cylinder, a movable plate and a stirring rod. The fixed plate is suspended by a support, and the stirring cylinder is located below the fixed plate. Its telescopic end passes through the fixed plate and is connected to the movable plate. One end of the stirring rod is fixed to the movable plate in conjunction with the motor, and the other end passes through the fixed plate. A plurality of through holes are provided on the fixed plate, and a feeding hose is inserted into the through hole. The end of the hose is connected to the liquid box through a peristaltic pump.

[0013] Preferably, the transfer platform and the second transfer platform both include a container bracket and a turning cylinder for controlling the turning of the container bracket, and a detection container is fixed at the center of the container bracket.

[0014] Preferably, the dropper includes a portal frame, a transverse module installed on the portal frame, a lifting module vertically fixed on the slider of the transverse module, and a dropper bracket installed on the telescopic end of the lifting module, the upper end of the dropper bracket is fixed with a clamping cylinder, the lower end is fixed with a dropper, and the silicone head of the dropper is located between the two clamping claws of the clamping cylinder.

[0015] Preferably, the filter paper conveying mechanism includes two side plates installed on the surface of the second mounting plate, a first guide roller and a second guide roller installed between the two side plates, and a paper roll holder installed on the second mounting plate at one end of the side plate, the paper roll holder is respectively installed with a loading roll and a receiving roll, and the receiving roll is controlled by a motor to rotate to realize the winding operation, the filter paper led out by the loading roll is led out from under the second guide roller and then bypasses the first guide roller, and is finally wound onto the receiving roll.

[0016] Preferably, the material-receiving mechanism includes a vertically installed lifting plate, a rack installed on the side wall of the lifting plate, a fixed seat and a material-receiving bucket. A motor is installed on the side wall of the fixed seat, and a gear that matches the rack is equipped on the rotating shaft of the motor. One end of the material-receiving bucket is connected to the telescopic end of the bucket cylinder fixed on the fixed seat, and the middle is equipped with a hinged seat installed at the bottom end of the fixed seat. The other end is a bucket structure. The bucket is controlled by the bucket cylinder to swing up and down with the hinged seat as the fulcrum to complete the shoveling and dumping operations.

[0017] An online chemical detection method for machine-made sand, the steps of which are as follows:

[0018] Chloride ion detection

[0019] The bucket cylinder takes sand and gravel from the machine-made sand conveyor belt, lifts it to the chloride ion detection layer, and pours the machine-made sand into the hopper;

[0020] The hopper tilts under the control of the steering gear and pours the machine-made sand into the testing container;

[0021] The conveyor track drives the detection container to move to the feeding and stirring mechanism, where chloride ion detection liquid is added and stirred evenly. The container is then moved to the heating mechanism to heat the stirred solution. After heating to a certain temperature, it is moved to the calibration detection mechanism, where the chloride ion content is automatically detected by the detection pen and fed back to the host computer.

[0022] After the test is completed, the conveyor track drives the test container to move to the waste hopper to discharge the waste liquid;

[0023] The detection container is moved to the feeding and stirring mechanism again to add distilled water and stir, so as to realize automatic cleaning of the detection container. The detection container after cleaning is easily moved to the feeding mechanism again to wait for the next detection;

[0024] Methylene blue value detection

[0025] The bucket cylinder takes sand and gravel from the machine-made sand conveyor belt and lifts it to the methylene blue detection layer, dries the machine-made sand, and then pours the machine-made sand into the hopper;

[0026] The hopper pours the machine-made sand into the test container and transfers it to the second feeding and stirring mechanism, where distilled water is first added for stirring, and then methylene blue solution is added for stirring;

[0027] After stirring, move to the dripping mechanism, draw a drop of liquid and drop it on the filter paper. The color sensor above the filter paper determines the color change to detect the methylene blue value.

[0028] After the test is completed, the conveyor track drives the test container to move to the waste hopper to discharge the waste liquid;

[0029] The detection container is moved to the feeding and stirring mechanism again to add distilled water and stir, so as to realize automatic cleaning of the detection container. The detection container after cleaning is easily moved to the feeding mechanism again to wait for the next detection.

[0030] Beneficial effects: The online chemical detection device for machine-made sand disclosed by the present invention has the following beneficial effects: it can realize online sampling and monitoring of machine-made sand at any time, the equipment operates automatically, has high stability, and has good consistency in the test process. The automated detection process reduces manual intervention, and the final test result is less subject to human subjective influence. Not only is the detection efficiency high, but the test results also have high statistical significance, which can help the processing plant to effectively count the chloride ion content and stone powder content of the machine-made sand, and ensure that the products produced on site can meet the owner's factory quality standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0032] Figure 1 is an overall external structure diagram of an embodiment of the present invention;

[0033] Figure 2 1 is a structural diagram of a chloride ion detection portion in an embodiment of the present invention;

[0034] Figure 3 yes Figure 2 Middle partial enlarged view;

[0035] Figure 4 1 is a structural diagram of a methylene blue detection portion in an embodiment of the present invention;

[0036] Figure 5 yes Figure 4 Middle partial enlarged view;

[0037] Figure 6 It is a structural diagram of the material taking mechanism in an embodiment of the present invention. Implementation Method

[0038] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0039] like Figure 1 As shown, the present invention discloses an online chemical detection device for machine-made sand, which is installed at the machine-made sand production conveyor belt, collects machine-made sand online and performs automatic detection of chloride ions and methylene blue. Its structure includes a frame 1, a chloride ion detection component 2, a methylene blue detection component 3 and a feeding mechanism 4, wherein the methylene blue detection component and the chloride ion detection component are installed on the frame in an upper and lower layout, and the feeding mechanism is vertically installed on the frame and passes through the chloride ion detection component and the methylene blue clamping component. The feeding mechanism can move up and down, and when it moves to the bottom, it takes material from the conveyor belt, and moves upward to the corresponding detection component to unload material.

[0040] Specifically, the chloride ion detection component is used to detect the chloride ion content in the machine-made sand. Its structure is as follows: Figures 2 and 3 As shown, it includes a mounting plate 201, a conveying track 202 fixed on the mounting plate, a feeding mechanism 203 located at one end of the conveying track, a feeding and stirring mechanism 204, a heating mechanism 205 and a calibration and detection mechanism 206 arranged on the side of the conveying track in sequence, and a waste hopper 207 located at the other end of the conveying track. A transfer platform 208 is provided on the conveying track for loading detection containers and switching their positions between the feeding mechanism, the feeding and stirring mechanism, the heating mechanism, the calibration and detection mechanism and the waste hopper. A plurality of liquid boxes 209 are also embedded on the mounting plate for loading different detection reagents and distilled water. The liquid box delivers the internal liquid to the feeding and stirring mechanism through a hose and a peristaltic pump 210.

[0041] The feeding mechanism includes a support frame 211, a steering gear 212 installed on the support frame, and a hopper 213 fixed on the steering gear shaft and driven by the steering gear to flip at different angles. One end of the hopper is provided with a feeding notch, which allows the sand and gravel in the feeding mechanism to roll into the hopper after being paired with the feeding mechanism. The other end of the hopper is provided with a discharging notch. When the detection container is moved to the feeding position, the steering gear drives the hopper to flip at a certain angle, so that the sand and gravel roll from the discharging notch into the detection container.

[0042] The feeding and stirring mechanism includes a fixed plate 214, a stirring cylinder 215, a movable plate 216 and a stirring rod 217. The fixed plate is suspended on the mounting plate by a support. The stirring cylinder is fixed on the mounting plate and is located below the fixed plate. Its telescopic end passes through the fixed plate and is connected to the movable plate. One end of the stirring rod is fixed to the movable plate in conjunction with the motor, and the other end passes through the fixed plate. When the detection container is moved to the bottom of the stirring rod, the stirring cylinder controls the stirring rod to descend and insert into the detection container. At the same time, the motor drives the stirring rod to rotate for stirring. A plurality of through holes 218 are provided on the fixed plate. The hose (not shown) led out from the bottom of the liquid box passes through the peristaltic pump and is inserted into the through hole. The corresponding liquid is added to the detection container below through the peristaltic pump. Different liquid boxes are controlled by different peristaltic pumps to achieve the addition of different liquids.

[0043] The heating mechanism controls the lifting of the heating rod 220 through the lifting cylinder 219. When the detection container is transferred to the heating mechanism, the heating rod is inserted into the container to heat the solution. The calibration detection mechanism controls the lifting of the detection pen 221 through the lifting cylinder to detect the chloride ion content of the transferred solution. The solution after the test is transferred to the waste hopper for waste liquid dumping.

[0044] The transfer platform is installed on the slider of the linear module. The transfer platform includes a container bracket 222 and a flip cylinder (not shown) for controlling the flipping of the container bracket. A detection container 223 is fixed at the center of the container bracket. At the loading position, the feeding and stirring position, the heating position and the detection position, the detection container faces upward. At the waste hopper position, the flip cylinder drives the detection container to flip and pours the detection object in the container into the waste hopper.

[0045] The methylene blue detection component is used to detect the methylene blue value of machine-made sand. Its structure is as follows: Figure 4 As shown, it includes a second mounting plate 301, a second conveying track 302 fixed on the second mounting plate, a second feeding mechanism 303 and a drying mechanism 304 located at one end of the second conveying track, a second feeding and stirring mechanism 305, a dripping mechanism 306 and a filter paper conveying mechanism 307 arranged on the side of the second conveying track, and a second waste hopper 308 located at the other end of the second conveying track. A second transfer platform 309 is provided on the second conveying track for loading the detection container and switching the position between the second feeding mechanism, the second feeding and stirring mechanism, the dripping mechanism and the second waste hopper. A plurality of solution boxes 310 are embedded on the second mounting plate for loading different detection reagents and distilled water. The solution box delivers the internal liquid to the second feeding and stirring mechanism through a hose and a peristaltic pump.

[0046] The structures of the second feeding mechanism, the second feeding and stirring mechanism, and the second transfer platform are consistent with those in the chloride ion detection component, so they will not be described in detail here.

[0047] The drying mechanism is located on one side of the second feeding mechanism, and dries the machine-made sand before it is poured into the hopper. It includes a hot dryer 312 fixed to the second mounting plate through a column 311. The air outlet of the hot dryer is connected to an L-shaped air duct 313, which dries the machine-made sand in the bucket of the reclaiming mechanism before pouring it into the hopper.

[0048] The dropper is placed above the second conveying mechanism, and the stirred test solution is sucked through a dropper and dripped onto filter paper for methylene blue value detection. Its structure is as follows: Figure 5 As shown, it includes a portal frame 314, a transverse module 315 installed on the portal frame, a lifting module 316 vertically fixed on the slider of the transverse module, and a dropper bracket 317 installed at the telescopic end of the lifting module. A clamping cylinder 318 is fixed to the upper end of the dropper bracket, and a dropper 319 is fixed to the lower end, and the silicone head of the dropper is located between the two clamping claws of the clamping cylinder. During detection, the transverse module drives the dropper to move horizontally above the detection container, and the lifting module descends to allow the dropper to be inserted into the detection container. The clamping cylinder imitates manual pinching of the dropper silicone head to absorb the solution. The dropper after absorbing the solution moves to the filter paper for drip detection with the cooperation of the transverse module and the lifting module.

[0049] The filter paper conveying mechanism conveys the filter paper to the detection position and recycles it after use. Its structure is as follows Figure 5 As shown, two side plates 320 are installed on the surface of the second mounting plate, a first guide roller 321 and a second guide roller 322 are installed between the two side plates, and a paper roll holder 323 is installed on the second mounting plate at one end of the side plate. A loading roll 324 and a receiving roll 325 are respectively installed on the paper roll holder, and the rotation of the receiving roll is controlled by a motor 326 to realize the winding operation. The filter paper led out by the loading roll is led out from under the second guide roller and then bypasses the first guide roller and is finally wound onto the receiving roll. The rotation of the receiving roll causes the filter paper to move synchronously to realize transportation, ensuring that the used filter paper can be automatically wound up.

[0050] The material taking mechanism realizes automatic material taking of machine-made sand and transports it to the chloride ion detection component or the methylene blue detection component. Its structure is as follows: Figure 6 As shown, it includes a vertically installed lifting plate 401, a rack 402 installed on the side wall of the lifting plate, a fixed seat 403 and a material receiving bucket 404. A motor 405 is installed on the side wall of the fixed seat. A gear that matches the rack is assembled on the rotating shaft of the motor. The rotation of the motor causes the gear and the rack to engage and move, thereby causing the fixed seat to rise and fall along the rack. One end of the material receiving bucket is connected to the telescopic end of the bucket cylinder 406 fixed on the fixed seat, and the middle is matched with the articulated seat 407 installed at the bottom of the fixed seat. The other end is a bucket structure. The bucket cylinder controls the bucket to swing up and down with the articulated seat as the fulcrum to complete the shoveling and dumping operations.

[0051] The present invention discloses an online chemical detection method for machine-made sand, and the detection process is as follows:

[0052] Chloride ion detection

[0053] The bucket cylinder takes sand and gravel from the machine-made sand conveyor belt, lifts it to the chloride ion detection layer, and pours the machine-made sand into the hopper;

[0054] The hopper tilts under the control of the steering gear and pours the machine-made sand into the testing container;

[0055] The conveyor track drives the detection container to move to the feeding and stirring mechanism, where chloride ion detection liquid is added and stirred evenly. The container is then moved to the heating mechanism to heat the stirred solution. After heating to a certain temperature, it is moved to the calibration detection mechanism, where the chloride ion content is automatically detected by the detection pen and fed back to the host computer.

[0056] After the test is completed, the conveyor track drives the test container to move to the waste hopper to discharge the waste liquid;

[0057] The detection container is moved to the feeding and stirring mechanism again to add distilled water and stir, so as to realize automatic cleaning of the detection container. The detection container after cleaning is easily moved to the feeding mechanism again to wait for the next detection.

[0058] Methylene blue value detection

[0059] The bucket cylinder takes sand and gravel from the machine-made sand conveyor belt and lifts it to the methylene blue detection layer, dries the machine-made sand, and then pours the machine-made sand into the hopper;

[0060] The hopper pours the machine-made sand into the test container and transfers it to the second feeding and stirring mechanism, where distilled water is first added for stirring, and then methylene blue solution is added for stirring;

[0061] After stirring, move to the dripping mechanism, draw a drop of liquid and drop it on the filter paper. The color sensor above the filter paper determines the color change to detect the methylene blue value.

[0062] After the test is completed, the conveyor track drives the test container to move to the waste hopper to discharge the waste liquid;

[0063] The detection container is moved to the feeding and stirring mechanism again to add distilled water and stir, so as to realize automatic cleaning of the detection container. The detection container after cleaning is easily moved to the feeding mechanism again to wait for the next detection.

[0064] The online chemical detection device for machine-made sand of the present invention is installed above the machine-made sand conveyor belt to realize online detection of chloride ions and methylene blue values of machine-made sand. The device combines the two detections into one, and the automated detection eliminates the tedious manual material collection and detection.

[0065] The above content clearly and completely describes the technical solutions in the embodiments of the present invention so that those skilled in the art can better understand the advantages and features of the present invention and thus more clearly define the scope of protection of the present invention. The embodiments described in the present invention are only some of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts are within the scope of protection of the present invention.

Claims

1. An online chemical detection device for machine-made sand, characterized by: The machine comprises a frame, a chloride ion detection component, a methylene blue detection component and a retrieving mechanism, wherein the methylene blue detection component and the chloride ion detection component are installed on the frame in an upper and lower arrangement; the retrieving mechanism is vertically installed on the frame and passes through the chloride ion detection component and the methylene blue clamping component to automatically deliver the acquired sand and gravel to the chloride ion detection component or the methylene blue detection component; The chloride ion detection assembly includes a mounting plate, a conveying track fixed on the mounting plate, a feeding mechanism located at one end of the conveying track, a feeding and stirring mechanism, a heating mechanism and a calibration and detection mechanism sequentially arranged on the side of the conveying track, and a waste hopper located at the other end of the conveying track. A transfer platform is provided on the conveying track, and the transfer platform is loaded with a detection container and switches positions between the feeding mechanism, the feeding and stirring mechanism, the heating mechanism, the calibration and detection mechanism and the waste hopper. The methylene blue detection assembly includes a second mounting plate, a second conveying track fixed to the second mounting plate, a second feeding mechanism and a drying mechanism located at one end of the second conveying track, a second feeding and stirring mechanism, a dripping mechanism and a filter paper conveying mechanism located on the side of the second conveying track, and a second waste hopper located at the other end of the second conveying track, a second transfer platform is provided on the second conveying track, and the second transfer platform loads the detection container and switches the position between the second feeding mechanism, the second feeding and stirring mechanism, the dripping mechanism and the second waste hopper; The filter paper conveying mechanism includes two side plates installed on the surface of the second mounting plate, a first guide roller and a second guide roller installed between the two side plates, and a paper roll holder installed on the second mounting plate at one end of the side plate. A loading roll and a receiving roll are respectively installed on the paper roll holder, and the receiving roll is controlled by a motor to rotate to realize the winding operation. The filter paper led out by the loading roll is led out from under the second guide roller, then bypasses the first guide roller, and is finally wound onto the receiving roll.

2. The machine-made sand online chemical detection device according to claim 1, characterized in that: The feeding mechanism and the second feeding mechanism both include a support frame, a servo mounted on the support frame, and a hopper fixed on a servo shaft and driven by the servo to flip at different angles. One end of the hopper is provided with a feed notch, and the other end is provided with a discharge notch.

3. The machine-made sand online chemical detection device according to claim 1, characterized in that: The feeding and stirring mechanism and the second feeding and stirring mechanism both include a fixed plate, a stirring cylinder, a movable plate and a stirring rod. The fixed plate is suspended by a support. The stirring cylinder is located below the fixed plate. Its telescopic end passes through the fixed plate and is connected to the movable plate. One end of the stirring rod is fixed to the movable plate in conjunction with the motor, and the other end passes through the fixed plate. A plurality of through holes are provided on the fixed plate, and a feeding hose is inserted into the through hole. The end of the hose is connected to the liquid box through a peristaltic pump.

4. The machine-made sand online chemical detection device according to claim 1, characterized in that: The transfer platform and the second transfer platform both include a container bracket and a turning cylinder for controlling the turning of the container bracket. A detection container is fixed at the center of the container bracket.

5. The machine-made sand online chemical detection device according to claim 1, characterized in that: The dropper includes a portal frame, a transverse module installed on the portal frame, a lifting module vertically fixed on the slider of the transverse module, and a dropper bracket installed on the telescopic end of the lifting module. A clamping cylinder is fixed at the upper end of the dropper bracket, and a dropper is fixed at the lower end, and the silicone head of the dropper is located between the two clamping claws of the clamping cylinder.

6. The machine-made sand online chemical detection device according to claim 1, characterized in that: The material-retrieving mechanism includes a vertically installed lifting plate, a rack installed on the side wall of the lifting plate, a fixed seat and a material-receiving bucket. A motor is installed on the side wall of the fixed seat, and a gear that matches the rack is assembled on the rotating shaft of the motor. One end of the material-receiving bucket is connected to the telescopic end of the bucket cylinder fixed on the fixed seat, and the middle is equipped with a hinged seat installed at the bottom end of the fixed seat. The other end is a bucket structure. The bucket is controlled by the bucket cylinder to swing up and down with the hinged seat as the fulcrum to complete the shoveling and dumping operations.

7. A detection method based on the machine-made sand online chemical detection device according to claim 1, characterized in that The steps include: Chloride ion detection The bucket cylinder takes sand and gravel from the machine-made sand conveyor belt, lifts it to the chloride ion detection layer, and pours the machine-made sand into the hopper; The hopper tilts under the control of the steering gear and pours the machine-made sand into the testing container; The conveyor track drives the detection container to move to the feeding and stirring mechanism, where chloride ion detection liquid is added and stirred evenly. The container is then moved to the heating mechanism to heat the stirred solution. After heating to a certain temperature, it is moved to the calibration detection mechanism, where the chloride ion content is automatically detected by the detection pen and fed back to the host computer. After the test is completed, the conveyor track drives the test container to move to the waste hopper to discharge the waste liquid; The detection container is moved to the feeding and stirring mechanism again to add distilled water and stir, so as to realize automatic cleaning of the detection container. The detection container after cleaning is easily moved to the feeding mechanism again to wait for the next detection; Methylene blue value detection The bucket cylinder takes sand and gravel from the machine-made sand conveyor belt and lifts it to the methylene blue detection layer. The machine-made sand is dried in the dryer and then poured into the hopper. The hopper pours the machine-made sand into the test container and transfers it to the second feeding and stirring mechanism, where distilled water is first added for stirring, and then methylene blue solution is added for stirring; After stirring, move to the dripping mechanism, draw a drop of liquid and drop it on the filter paper. The color sensor above the filter paper determines the color change to detect the methylene blue value. After the test is completed, the conveyor track drives the test container to move to the waste hopper to discharge the waste liquid; The detection container is moved to the feeding and stirring mechanism again to add distilled water and stir, so as to realize automatic cleaning of the detection container. The cleaning detection container is moved to the feeding mechanism again to wait for the next detection.

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