Automatic pre-treatment device, automatic detection apparatus, and automatic detection method

Abstract

The application discloses an automatic pretreatment device, an automatic detection equipment and an automatic detection method. The automatic pretreatment device comprises a reaction container, a conveying module, a heat exchange module, a filtering module and a driving module. The reaction container is provided with a feeding port and a discharging port in communication, and is further provided with a feeding port and a temperature detector in a liquid level area. The conveying module is used for inputting reaction reagents and gas into the reaction container, the gas is used for stirring the reaction material, and the conveying module is used for discharging waste liquid. The heat exchange module is used for heating and cooling the reaction material. The filtering module is arranged at the bottom of the reaction container. The driving module is used for rotating the reaction container, so that the discharging port has a first state with a position higher than a low liquid level area or a second state with a position lower than the low liquid level area. In the second state, the reaction material in the reaction container can be poured into the filtering module. The technical scheme of the application reduces the experimental difficulty of detecting the free silicon dioxide content in dust by using the pyrophosphoric acid method, and improves the controllability and detection precision in the experimental process.

Description

Technical Field

[0001] This invention relates to the field of air detection technology, and in particular to an automatic pretreatment device, an automatic detection equipment, and an automatic detection method. Background Technology

[0002] Silicosis, a type of pneumoconiosis, is caused by long-term exposure to high concentrations of silica dust. Free silica has the strongest pathogenicity. Accurately monitoring changes in the concentration of free silica in workplace dust is extremely helpful in preventing pneumoconiosis.

[0003] Currently, the mainstream method for detecting free silica content in dust in laboratories is the pyrophosphate method. This method has relatively low requirements for testing conditions and instruments, and is highly reliable and practical. However, the temperature for dissolving dust samples in the pyrophosphate method must be strictly controlled between 245℃ and 250℃. If the temperature is too high, gelation may occur; if the temperature is too low, there is a risk of incomplete reaction. Therefore, continuous stirring is required during the dissolution process to ensure that the dust is evenly dispersed in the uniformly heated pyrophosphate acid. During the dissolution process, the operator must control the heating temperature of the electric furnace according to the thermometer reading, while simultaneously performing stirring. The entire operation is complex and carries the risk of reaction delay, easily leading to problems such as temperature exceeding the limit and untimely stirring, which seriously affect the test results. Manual operation is complex, involves numerous instruments and equipment, has a limited sample volume per person per test, and suffers significant losses due to multiple transfers of the reaction solution. Filtration is carried out at room temperature, where the reaction solution cools easily, resulting in slow filtration. Summary of the Invention

[0004] The main objective of this invention is to provide an automatic filtration device, an automatic detection equipment, and an automatic detection method, which aims to reduce the experimental difficulty of detecting the free silica content in dust using the pyrophosphate method and improve the controllability and detection accuracy of the experimental process.

[0005] To achieve the above objectives, the present invention provides an automatic filtration device comprising:

[0006] The reaction vessel is provided with a connected inlet and outlet, and a low liquid level zone is formed between the inlet and the outlet. The low liquid level zone is also provided with a feed inlet and a temperature sensor.

[0007] A delivery module is provided for inputting reaction reagents and gas into the reaction vessel, wherein the gas is used to stir the reactants contained in the reaction vessel.

[0008] A heat exchange module is used to heat the reactants contained in the reaction vessel;

[0009] A filter module is located at the bottom of the reaction vessel;

[0010] A drive module is connected to the reaction vessel and drives the reaction vessel to rotate so that the discharge port has a first state where its position is higher than the low liquid level zone, or a second state where its position is lower than the low liquid level zone.

[0011] In the second state, the reactants contained in the reaction vessel are poured into the filtration module so that the filtration module can filter and obtain the remaining particulate matter.

[0012] In one embodiment of the present invention, the conveying module includes:

[0013] A multi-position valve, comprising a first inlet, a second inlet, and a first outlet, wherein the first inlet and the second inlet are respectively connected to a pyrophosphate tube and a feed tube, and the first outlet is connected to the reaction vessel via a feed tube.

[0014] The pump body is connected to the multi-position valve to draw reagents from the pyrophosphate tube and the feed tube respectively, and deliver them to the reaction vessel via the feed tube.

[0015] In one embodiment of the present invention, a buffer container is provided between the pump body and the multi-position valve. The pump body buffers the extracted reagent into the buffer container and then delivers the reagent buffered in the buffer container to the reaction vessel.

[0016] In one embodiment of the present invention, the conveying module further includes a spray pipe and a switching valve. The switching valve is connected to the first outlet, and both the spray pipe and the feed pipe are connected to the switching valve. The feed pipe is connected to the replenishment port, and the spray pipe is connected to the feed port.

[0017] In one embodiment of the present invention, the conveying module further includes a preheating module, which is disposed between the first outlet and the switching valve.

[0018] In one embodiment of the invention, the feed tube is used to provide hydrochloric acid and distilled water.

[0019] In one embodiment of the present invention, the multi-position valve further includes a third inlet and a second outlet, the third inlet being connected to the filter module and the second outlet being used to connect to the drainage system.

[0020] In one embodiment of the present invention, the filtering module includes:

[0021] A funnel, rotatably disposed at the bottom of the reaction vessel, is used to hold filter paper.

[0022] A wastewater pool is connected to the funnel, and a pH detector is also installed in the wastewater pool.

[0023] A cache pool is located at the bottom of the funnel;

[0024] A water pump, the two ends of which are respectively connected to the buffer pool and the wastewater pool.

[0025] In one embodiment of the present invention, the filtration module further includes a vacuum filtration system, the vacuum filtration system comprising:

[0026] The present invention also provides an automatic detection device, which includes a main unit, a weighing machine, and at least one detection machine. The weighing machine and the detection machine are both connected to the main unit, and the detection machine is equipped with multiple automatic filtering devices.

[0027] This invention also provides an automatic detection method for free silica, comprising the following steps:

[0028] The control drive module keeps the reaction vessel in a first state where the outlet position is above the low liquid level zone.

[0029] Add 0.1g to 0.2g of sample into the reaction vessel through the feed inlet;

[0030] The control delivery module adds 15 ml of pyrophosphate into the reaction vessel to obtain a mixture;

[0031] The heat exchange module is controlled to maintain the mixture in the reaction vessel at an environment of 245℃~250℃ for 15 minutes, while air is blown into the reaction vessel to stir and ensure that the sample and pyrophosphate are fully mixed.

[0032] Cool the mixture to 40℃~50℃;

[0033] The control delivery module adds distilled water at 50℃~80℃ to the reaction vessel to make the volume of the mixture 40ml~50ml, while blowing air to stir.

[0034] The control delivery module adds distilled water at 50℃~80℃ to the reaction vessel again, so that the volume of the mixture is 150ml~200ml, while blowing air to stir.

[0035] The heat exchange module is controlled to heat the mixture to boiling.

[0036] The control drive module drives the reaction vessel to rotate so that the outlet position is higher than the low liquid level zone in the second state, causing the mixture in the reaction vessel to pour into the filter module;

[0037] The control and conveying module draws hydrochloric acid water through the inlet to rinse the reaction vessel, so that the remaining particulate matter is transferred to the filtration module.

[0038] Remove the remaining particles.

[0039] In one embodiment of the present invention, before the step of adding distilled water at 50°C to 80°C to the reaction vessel by the control delivery module, the method further includes:

[0040] The preheating module is controlled to preheat the distilled water.

[0041] In one embodiment of the present invention, the step of the control and conveying module drawing cleaning fluid through the inlet to rinse the reaction vessel, so that all remaining particulate matter is transferred to the filtration module, further includes:

[0042] The control and conveying module draws hydrochloric acid solution and rinses the reaction vessel through the inlet;

[0043] The control and conveying module draws distilled water through the inlet to rinse the reaction vessel;

[0044] Observe the pH detector installed in the wastewater tank;

[0045] When the pH detector indicates an acidic reaction, the conveying module continues to draw distilled water through the inlet to rinse the reaction vessel.

[0046] When the pH detector indicates no acidic reaction, the control delivery module stops pumping distilled water.

[0047] This invention proposes an automatic filtration device comprising a reaction vessel, a conveying module, a heat exchange module, a filtration module, and a drive module. The reaction vessel is equipped with a feed inlet and a thermometer in the liquid level zone. In use, the sample is added to the reaction vessel through the feed inlet, followed by 15 ml of pyrophosphate, resulting in a mixture. Because the reaction vessel has a feed inlet and a thermometer in the low liquid level zone, temperature detection can be achieved even with only a small amount of mixture in the reaction vessel, ensuring the controllability of the experimental process. Furthermore, the conveying module can also input reaction reagents and gases into the reaction vessel without requiring container changes, simplifying the experimental operation and avoiding losses caused by multiple transfers. Simultaneously, the conveying module can also inject several streams of gas into the reaction vessel to stir the reactants, ensuring uniform mixing of the sample and pyrophosphate. The heat exchange module heats the reactants in the reaction vessel to the required reaction conditions. The drive module controls the switching of the reaction vessel between a first state and a second state, allowing the reactants in the reaction vessel to be poured into the filtration module after the reaction is complete, thus filtering out any remaining particulate matter. The automatic filtration device of this invention enables automated sample pretreatment, eliminating the need for manual operation during the entire experiment and reducing its complexity. Furthermore, this invention allows for precise control of temperature, reagent dosage, and mixture transfer during the reaction process, minimizing operational errors and improving controllability and detection accuracy. Additionally, the automatic filtration device also enhances work efficiency. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0049] Figure 1 This is a schematic diagram of the structure of an embodiment of the automatic detection device of the present invention;

[0050] Figure 2 for Figure 1 A schematic diagram of the automatic filtration device in its first state;

[0051] Figure 3 for Figure 1 A schematic diagram of the automatic filtration device in the second state;

[0052] Figure 4 This is a schematic diagram of the reaction vessel of the automatic filtration device of the present invention;

[0053] Figure 5 This is a flowchart of an embodiment of the automatic detection method of the present invention;

[0054] Figure 6 This is a flowchart of another embodiment of the automatic detection method of the present invention.

[0055] Explanation of icon numbers:

[0056]

[0057] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0058] 100. Automatic filtration device; 10. Reaction vessel; 11. Feed inlet; 13. Discharge outlet; 15. Feed replenishment port; 17. Low liquid level zone; 20. Conveying module; 21. Multi-position valve; 211. First inlet; 212. Second inlet; 213. Third inlet; 214. First outlet; 215. Second outlet; 23. Pump body; 24. Buffer container; 25. Feeding pipe; 26. Switching valve; 27. Spray pipe; 28. Preheating module; 30. Heat exchange module; 40. Filtration module; 41. Funnel; 42. Wastewater tank; 43. Vacuum filtration tank; 44. Water pump; 50. Support frame; 200. Detector; 300. Main unit; 400. Weighing machine; 1000. Automatic detection equipment. Detailed Implementation

[0059] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0061] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0062] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0063] This invention proposes an automatic pretreatment device, an automatic detection equipment, and an automatic detection method. The automatic filtration device provided by this invention is used to detect the concentration of free silica in a sample, so as to accurately grasp the changes in the concentration of free silica in workplace dust.

[0064] Currently, the mainstream method for detecting free silica content in dust in laboratories is the pyrophosphate method. This method dissolves impurities in the sample while retaining silica particles. Existing pyrophosphate methods primarily involve manual experiments by laboratory personnel. This is based on the operational guidelines outlined in the Ministry of Health's 2007 standard, "Determination of Dust in Workplace Air Part 4: Free Silica Content" (GBZ / T 192.4-2007). Because the temperature for dissolving dust samples in the pyrophosphate method must be strictly controlled between 245℃ and 250℃—too high a temperature can lead to gelation, while too low a temperature risks incomplete reaction—constant stirring is required during the dissolution process to ensure uniform dispersion of the dust in the uniformly heated pyrophosphate acid. During dissolution, operators must control the heating temperature of the electric furnace based on thermometer readings, while simultaneously performing stirring, and repeatedly changing and cleaning containers of different volumes. The entire process is complex and carries the risk of reaction delay, easily leading to problems such as excessive temperature and untimely stirring, which can severely affect the test results. Furthermore, due to the complexity of manual operation, the variety of instruments and equipment involved, the limited sample volume per person per test, the significant loss of reaction solution after multiple transfers, and the slow filtration process when filtration is carried out at room temperature as the reaction solution is easily cooled.

[0065] Reference Figure 1 and Figure 4 In one embodiment of the present invention, the automatic filtration device 100 includes:

[0066] The reaction vessel 10 is provided with a feed inlet 11 and a discharge outlet 13 that are connected to each other. A low liquid level zone 17 is also formed between the feed inlet 11 and the discharge outlet 13. The low liquid level zone 17 is also provided with a feed inlet 15 and a thermometer (not shown in the figure).

[0067] The delivery module 20 is used to input reaction reagents and gas into the reaction vessel 10, and the gas is used to stir the reactants contained in the reaction vessel 10.

[0068] The heat exchange module 30 is used to heat the reactants contained in the reaction vessel 10;

[0069] The filter module 40 is located at the bottom of the reaction vessel 10;

[0070] A drive module (not shown in the figure) is connected to the reaction vessel 10 and drives the reaction vessel 10 to rotate so that the discharge port 13 has a first state where its position is higher than the low liquid level zone 17, or a second state where its position is lower than the low liquid level zone 17.

[0071] In the second state, the reactants contained in the reaction container 10 are poured into the filtration module 40 so that the filtration module 40 filters and obtains the remaining particulate matter.

[0072] The present invention proposes an automatic filtration device 100, comprising a reaction vessel 10, a conveying module 20, a heat exchange module 30, a filtration module 40, and a drive module. The reaction vessel 10 is also equipped with a feed inlet 15 and a thermometer in the liquid level zone. In use, the sample is added into the reaction vessel 10 through the feed inlet 11, followed by the addition of 15 ml of pyrophosphate to obtain a mixture. Because the reaction vessel 10 has a feed inlet 15 and a thermometer in the low liquid level zone 17, temperature detection can be achieved even with only a small amount of mixture in the reaction vessel 10, ensuring the controllability of the experimental process. Furthermore, the conveying module 20 can also input reagents and gases into the reaction vessel 10 without requiring container replacement, simplifying the experimental operation. Simultaneously, the conveying module 20 can also inject several streams of gas into the reaction vessel 10 to stir the reactants, ensuring uniform mixing of the sample and pyrophosphate. The heat exchange module 30 can heat the reactants in the reaction vessel 10 to the required reaction conditions. The drive module controls the switching of the reaction vessel 10 between a first state and a second state, allowing the reactants in the reaction vessel 10 to be poured into the filtration module 40 after the reaction is complete, thus filtering out the remaining particulate matter. The automatic filtration device 100 of this invention can automatically digest and filter samples, eliminating the need for manual operation by the experimenter and reducing the difficulty of the experiment. Furthermore, this invention enables precise control of the temperature and the amount of reagents added during the reaction process, reducing operational errors and improving the controllability and detection accuracy of the experiment. Using the automatic filtration device 100 of this invention also improves work efficiency.

[0073] In one embodiment, the drive module can also control the feed inlet 11 of the reaction vessel to be set horizontally to avoid powder scattering and loss during the feeding process.

[0074] Understandably, in this embodiment of the invention, the inlet 11 and outlet 13 of the reaction vessel 10 are not at the same height as the low liquid level zone 17, which can be understood as the bottom of the reaction vessel 10. In the first state, the low liquid level zone 17 can meet the requirement of accurate temperature measurement of approximately 15 ml of the mixture.

[0075] In one embodiment, the reaction vessel 10 includes a first section (not shown) and a second section (not shown) that are connected to each other. The first section and the second section are arranged at an angle, making the reaction vessel 10 generally a V-shaped connected container. A low liquid level zone 17 is formed at the junction of the first section and the second section. The outer wall of the reaction vessel 10 is also recessed inward to form a mounting cavity (not shown), which is used to fix a thermometer located in the low liquid level zone 17. The first section has an inlet 11 and the second section has an outlet 13. The reactants flow into the reaction vessel 10 through the inlet 11 and out through the outlet 13. The first section and the second section form an obtuse angle, which allows cleaning liquid to be sprayed from the first inlet 111 while the reaction solution is being poured to clean the entire reaction vessel 100.

[0076] The reaction vessel 10 can be made of glass, which is transparent and allows researchers to easily observe the reaction. Furthermore, glass is heat-resistant, facilitating direct heating.

[0077] The outer wall of the reaction vessel 10 is also provided with a fixing seat (not shown in the figure). The fixing seat is located near the low liquid level zone 17. The drive module is connected to the reaction vessel 10 through the fixing seat to enable the reaction vessel 10 to switch between the first state and the second state.

[0078] In one embodiment of this application, the first segment is also configured as a variable diameter structure. For example, the diameter near the feed inlet 11 is larger than the diameter of the low liquid level zone 17, which can make the capacity of the reaction vessel 10 larger to meet the requirement of adding a large amount of distilled water during the reaction. At the same time, it is also beneficial to increase the size of the feed inlet 11 to facilitate the insertion of solid or powdered samples.

[0079] In one embodiment of this application, a flow guiding structure is formed at the outlet 13. The flow guiding structure (not shown in the figure) may be a gradually decreasing inner diameter of the reaction vessel 10 near the outlet 13, or it may be an arc-shaped flow guiding wall or other structure at the outlet 13 to avoid wall hanging during the pouring process.

[0080] In this application, after the sample is placed into the reaction vessel 10 through the inlet 11, in the first state, the sample and pyrophosphate are contained in the low liquid level zone 17. Steps such as adding distilled water, heating, and stirring during the experiment are all completed within this reaction vessel 10. There is no need to change the reaction vessel 10 midway, nor is it necessary to clean multiple reaction vessels 10. Experimenters can focus more intently on the reaction. Furthermore, a thermometer is installed in the low liquid level zone 17 to test the temperature of a small volume of reaction liquid, improving the operability and controllability of the experimental process. After the reaction is complete, the reactants are poured out through the outlet 13, and the reaction vessel 10 is cleaned. The remaining particulate matter can then be collected on the filter module 40.

[0081] In one embodiment, the heat exchange module 30 is used to heat the mixture in the reaction vessel 10 and maintain the mixture at a constant temperature between 245°C and 250°C. Specifically, the heat exchange module 30 includes a microwave heating element, or it may be an electromagnetic heating element, or an electric heating wire, etc., and the specific type of the heat exchange module 30 is not limited here. In addition to the heating element, the heat exchange module 30 also includes components for accelerating cooling, such as a fan. When the heating element stops heating, the fan is activated to accelerate airflow, so that the reaction solution in the reaction vessel 10 can be cooled rapidly.

[0082] In another embodiment, the automatic filtration device 100 includes a bracket 50, a drive device fixed on the bracket 50, and a drive module that can be a motor. The motor shaft is connected to the reaction vessel 10. When the reaction vessel 10 switches between a first state and a second state, the motor shaft serves as the rotation center.

[0083] Please refer to Figures 1 to 4 In one embodiment of the present invention, the conveying module 20 includes:

[0084] The multi-position valve 21 and the pump body 23 are provided. The multi-position valve 21 includes a first inlet 211, a second inlet 212 and a first outlet 214. The first inlet 211 and the second inlet 212 are respectively connected to a pyrophosphate tube and a feed tube 25. The first outlet 214 is connected to the reaction vessel 10 through a feed tube. The pump body 23 is connected to the multi-position valve 21 and is used to draw reagents from the pyrophosphate tube and the feed tube 25 respectively, and deliver them to the reaction vessel 10 through the feed tube 25.

[0085] In one embodiment of this application, the conveying module 20 can convey pyrophosphate, distilled water, hydrochloric acid solution, and gas inside the reaction container 10. The pump body 23 can be a peristaltic pump or other device capable of conveying liquids or gases. The multi-position valve 21 has a first inlet 211, a second inlet 212, a third inlet 213, a first outlet 214, and a second outlet 215. The first inlet 211 and the second inlet 212 are respectively connected to a pyrophosphate tube and a feed pipe 25. Understandably, the end of the pyrophosphate tube furthest from the multi-position valve 21 is used to connect to the container holding the pyrophosphate. The feed pipe 25 is connected to the containers storing hydrochloric acid and distilled water. It should be noted that the feed pipe 25 is used to convey pyrophosphate, distilled water, and gas to the replenishment port 15, and the spray pipe 27 is used to convey hydrochloric acid solution and distilled water to the inlet 11.

[0086] Understandably, in one embodiment, the feed pipe 25 includes a main pipe and two branch pipes, which are connected by a switching valve 26.

[0087] In another embodiment, the number of second inlets 212 may also be two at intervals. In this case, the feed pipe 25 includes two independently arranged pipes, one of which is connected to the container storing hydrochloric acid and the other is connected to the container storing distilled water.

[0088] Understandably, the concentration of hydrochloric acid can be configured according to actual needs. For example, in one embodiment, the concentration of hydrochloric acid is 0.1 mol / L.

[0089] In one embodiment of the present invention, since pyrophosphate, hydrochloric acid, etc., are corrosive, a buffer container 24 is provided between the pump body 23 and the multi-position valve 21 to prevent the pump body 23 from being corroded. When the pump body 23 draws pyrophosphate or hydrochloric acid, the reagents such as pyrophosphate or hydrochloric acid only need to be buffered in the buffer container 24 first. Then, the pump body 23 reverses its operation and delivers the reagents such as pyrophosphate or hydrochloric acid buffered in the buffer container 24 to the reaction vessel 10. In this way, the reagents such as pyrophosphate or hydrochloric acid can be prevented from directly contacting the pump body 23, thus preventing the pump body 23 from being corroded and extending the service life of the pump body 23.

[0090] Please refer to Figures 1 to 4In one embodiment of the present invention, the conveying module 20 further includes a spray pipe 27 and a switching valve 26. The switching valve 26 is connected to the first outlet 214. Both the spray pipe 27 and the feed pipe are connected to the switching valve 26. The feed pipe is connected to the replenishment port 15, and the spray pipe 27 is connected to the feed port 11. In one embodiment of the present invention, the switching valve 26 is a three-way valve. The three ports of the three-way valve are respectively connected to the spray pipe 27 and the feed pipe, and the switching valve 26 is connected to the first outlet 214. In this way, the flow path of the distilled water or hydrochloric acid conveyed by the pump body 23 can be easily controlled. It can be understood that in one embodiment, distilled water and gas can share a single feed pipe to simplify the pipeline and save costs. In another embodiment, distilled water and gas can also be two independently provided feed pipes.

[0091] Please refer to Figures 1 to 4 In one embodiment of the present invention, the conveying module 20 further includes a preheating module 28, which is disposed between the first outlet 214 and the switching valve 26. In this embodiment, the preheating module 28 may be a heating wire, a heating plate, or a microwave or electromagnetic heating element, etc. The preheating module 28 is used to preheat the distilled water inside the input reaction vessel 10 to a preset temperature to meet the experimental requirements for the temperature of the distilled water.

[0092] Please refer to 1 and Figure 2 In one embodiment of the present invention, the filtering module 40 includes:

[0093] A funnel 41 is rotatably disposed at the bottom of the reaction vessel 10, and filter paper is placed inside the funnel 41. A wastewater tank 42 is connected to the funnel 41, and a pH detector is also provided inside the wastewater tank 42. In one embodiment of this application, the funnel 41 is fixed by a rotating frame (not shown in the figure), and the funnel 41 has a leakage hole covered with filter paper. The filter paper is used to separate the reaction residue from the reaction liquid to facilitate further processing of the remaining particulate matter. Understandably, in order to avoid residual particulate matter adhering to the reaction vessel 10 after the reaction solution is poured out, in the second state, the conveying module 20 sprays hydrochloric acid into the feed inlet 11 of the reaction vessel 10 through the spray pipe 27 to transfer all the residual particulate matter remaining on the inner wall of the reaction vessel 10 to the filter paper. To further ensure that the reactants are uniformly collected by the filter paper, the rotating frame can be controlled to ensure that the reaction solution and cleaning solution can rinse the filter paper in funnel 41 360° during the pouring of the reaction solution and cleaning solution. Understandably, rinsing the filter paper of reaction vessel 10 3-5 times is usually sufficient for thorough cleaning. The cleaning includes acid washing and water washing. First, hydrochloric acid solution is used for acid washing to remove residual reaction mixture from the reaction vessel, followed by rinsing with distilled water to remove the reaction mixture and hydrochloric acid, continuing water rinsing until the pH meter indicates neutrality. Therefore, a pH detector can also be installed in wastewater tank 42 to determine the endpoint of the cleaning process.

[0094] In one embodiment of the present invention, the filtration module 40 further includes a vacuum filtration system, which includes a vacuum filtration tank 43 and a water pump 44. The vacuum filtration tank 43 is located at the bottom of the funnel 41; the two ends of the water pump 44 are respectively connected to the vacuum filtration tank 43 and the wastewater tank 42. By providing the vacuum filtration tank 43 and the water pump 44, the water pump 44 can accelerate the extraction of the reaction waste liquid at the bottom of the funnel 41 from the vacuum filtration tank 43 into the wastewater tank 42, thereby shortening the filtration cycle. In one embodiment of the present invention, the drain outlet of the wastewater tank 42 is connected to the third inlet 213 of the multi-position valve 21 through a pipeline, and the second outlet 215 of the multi-position valve 21 is used to connect to the drainage system. Thus, the wastewater inside the wastewater tank 42 can also be quickly discharged into the drainage system by the pump body 23 to ensure the cleanliness of the experimental environment.

[0095] Please refer to Figure 1The present invention also provides an automatic detection device, which includes a main unit 300, a weighing machine 400, and at least one detection machine 200. The weighing machine 400 and the detection machine 200 are both connected to the main unit 300. The detection machine 200 contains a plurality of automatic filtering devices 100. The specific structure of the automatic filtering device 100 is as described in the above embodiments. Since this automatic detection device adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0096] In this embodiment, the host 300 is equipped with a control system, a display screen, and corresponding operation buttons. The detection machine 200 also has operation buttons and a display screen, and includes multiple sample inlets and multiple detection modules, with one sample inlet corresponding to one detection module. Each detection module is equipped with an automatic filtering device 100, which can individually dissolve and filter samples, and perform individual detection. This allows for the simultaneous detection of multiple samples, improving detection efficiency.

[0097] In one embodiment, the automated testing equipment can be configured with one testing machine 200 and multiple expansion machines 500 according to actual needs, wherein the expansion machines 500 can be customized as needed. For example, in order to further increase the number of samples or the types of samples tested in a single test, in another embodiment, the expansion machines 500 can also be configured to have the same structure and function as the testing machine 200.

[0098] In one embodiment, there are multiple testing machines 200, each of which is electrically connected to the host 300. With multiple testing machines 200, each machine can independently complete the testing of its corresponding sample, further improving testing efficiency.

[0099] When injecting samples into the testing machine 200, automatic injection can be achieved through the injection mechanism. Of course, sample injection can also be achieved through manual injection, etc., without limitation.

[0100] Please refer to Figure 5 The present invention also provides an automatic detection method for free silica, comprising the following steps:

[0101] S1: The control drive module keeps the reaction vessel 10 in a first state where the position of the discharge port 13 is higher than the low liquid level zone 17;

[0102] S2: Add 0.1g~0.2g of sample into reaction vessel 10 through inlet 11;

[0103] S3: Control delivery module 20 adds 15ml of pyrophosphate to reaction vessel 10 to obtain a mixture;

[0104] S4: Control the heat exchange module 30 to keep the mixture in the reaction vessel 10 at an environment of 245℃~250℃ for 15 minutes, and at the same time blow air into the reaction vessel 10 to stir and make the sample and pyrophosphate fully mixed.

[0105] S5: Cool the mixture to 40℃~50℃;

[0106] S6: Control the delivery module 20 to add distilled water at 50℃~80℃ to the reaction vessel 10, so that the volume of the mixture is 40ml~50ml, and at the same time blow air to stir.

[0107] S7: Control the delivery module 20 to add distilled water at 50℃~80℃ to the reaction vessel 10 again, so that the volume of the mixture is 150ml~200ml, while blowing air to stir.

[0108] S8: Control the heat exchange module 30 to heat the mixture to boiling;

[0109] S9: The control drive module drives the reaction vessel 10 to rotate so that the position of the discharge port 13 is lower than the low liquid level zone 17, thus causing the mixture in the reaction vessel 10 to be poured into the filter module 40.

[0110] S10: Control the conveying module 20 to draw cleaning fluid and rinse the reaction vessel 10 through the feed inlet 11, so that the remaining particulate matter is transferred to the filter module 40.

[0111] S11: Remove the filter paper.

[0112] In this embodiment, the main control unit of the detection method is the host 300, which is internally configured with a controller to control various modules. For example, it controls the weighing and result uploading, and controls the operation and parameter settings of the detection machine 200. The detection machine 200 also has an independent control system that can independently control the operation of its internal modules, such as the drive module. This allows the drive module to maintain the reaction vessel 10 in a first state where the outlet 13 is above the low liquid level zone 17, ensuring that the substances are contained within the reaction vessel 10 when samples, pyrophosphate, distilled water, or other reactants are added. Before step S2, the sample can be weighed using a weighing machine 400 to determine the amount of sample added, facilitating subsequent calculation of the free silica content.

[0113] In steps S6 and S7, when adding distilled water to the reaction vessel 10, the distilled water is also preheated. In this embodiment, the preheating module 28 can preheat the distilled water input into the reaction vessel 10 to a preset temperature to meet the test requirements for the distilled water temperature. The preheating temperature and preheating power can be controlled based on the temperature value detected by the temperature sensor; the preheating temperature, preheating time, and preheating power are not limited here.

[0114] Please refer to Figure 6 In step S10, the control and conveying module 20 draws cleaning fluid through the inlet 11 to rinse the reaction vessel 10, so that all remaining particulate matter is transferred to the filtration module 40, and the process further includes:

[0115] S101: Control the conveying module 20 to draw hydrochloric acid solution and rinse the reaction vessel 10 through the inlet 11;

[0116] S102: Control delivery module 20 draws distilled water through inlet 11 to rinse reaction vessel 10;

[0117] S103: Observe the pH detector installed in wastewater tank 42;

[0118] S104: When the pH detector reports an acidic pH reaction, continue to control the delivery module 20 to draw distilled water through the inlet 11 to rinse the reaction vessel 10.

[0119] S105: When the pH detector reports no acidic reaction, control the delivery module 20 to stop drawing distilled water.

[0120] In this embodiment, the cleaning solution includes hydrochloric acid solution and distilled water. Cleaning includes acid washing and water washing. First, hydrochloric acid solution is used for acid washing to remove residual reaction mixture in the reaction vessel. Then, distilled water is used to wash away the reaction mixture and hydrochloric acid, continuing water washing until the pH meter reports neutral. The pH detector can be a pH electrode or other components capable of pH detection. In this embodiment, the endpoint of cleaning is determined by observing the detection signal of the pH detector, ensuring that the filter paper is thoroughly cleaned and avoiding residue that could affect the accuracy of the detection. Simultaneously, by using a pH detector, over-cleaning can be avoided, preventing waste.

[0121] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An automatic pretreatment device, characterized in that, include: The reaction vessel (10) includes a first section and a second section that are connected and set at an angle, so that the reaction vessel (10) is formed as a V-shaped connected container. The first section is provided with a feed inlet (11), and the second section is provided with a discharge outlet (13). The position where the first section and the second section are connected forms a low liquid level zone (17). The feed inlet (11), the discharge outlet (13) and the low liquid level zone (17) are not at the same height position. The low liquid level zone (17) is also provided with a feed inlet (15) and a thermometer. The thermometer is located on the outer wall of the reaction vessel (10). The discharge outlet (13) has a flow guiding structure at its end. A delivery module (20) is used to input reaction reagents and gas into the reaction vessel (10). The gas is used to stir the reactants contained in the reaction vessel (10). The delivery module (20) includes a multi-position valve (21) and a pump body (23). The multi-position valve (21) includes a first inlet (211), a second inlet (212), and a first outlet (214). The first inlet (211) and the second inlet (212) are respectively connected to a pyrophosphate tube and a feed pipe. The first outlet (214) is connected to the reaction vessel (10) through a feed pipe (25). The pump body (23) is connected to the multi-position valve (21) to extract reagents from the pyrophosphate tube and the feed pipe respectively, and deliver them to the reaction vessel (10) through the feed pipe (25). The feed pipe (25) is used to provide pyrophosphate, hydrochloric acid, or distilled water. A heat exchange module (30) is used to heat and cool the reactants contained in the reaction vessel (10); A filter module (40) is located at the bottom of the reaction vessel (10); A drive module is connected to the reaction vessel (10) and drives the reaction vessel (10) to rotate so that the discharge port (13) has a first state in which the position is higher than the low liquid level zone (17) and the discharge port (13) also has a second state in which the position is lower than the low liquid level zone (17). In the second state, the reactants contained in the reaction container (10) are poured into the filter module (40) so that the filter module (40) filters out the remaining particulate matter.

2. The automatic pretreatment apparatus as described in claim 1, characterized in that, A buffer container (24) is provided between the pump body (23) and the multi-position valve (21). The pump body (23) buffers the extracted reagent into the buffer container (24) and then transports the reagent buffered in the buffer container (24) into the reaction vessel (10).

3. The automatic pretreatment apparatus as described in claim 1, characterized in that, The conveying module (20) further includes a spray pipe (27) and a switching valve (26). The switching valve (26) is connected to the first outlet (214). The spray pipe (27) and the feed pipe (25) are both connected to the switching valve (26). The feed pipe (25) is connected to the replenishment port (15). The spray pipe (27) is connected to the feed inlet (11). The conveying module (20) further includes a preheating module (28), which is located between the first outlet (214) and the switching valve (26).

4. The automatic pretreatment apparatus as described in claim 1, characterized in that, The multi-position valve (21) also includes a third inlet (213) and a second outlet (215). The third inlet (213) is connected to the filter module (40), and the second outlet (215) is used to connect to the drainage system.

5. The automatic pretreatment apparatus as described in claim 1, characterized in that, The filtering module (40) includes: A funnel (41) is rotatably disposed at the bottom of the reaction vessel (10), and the funnel (41) is used to hold filter paper; Wastewater pool (42), which is connected to the funnel (41), and a pH detector is also provided in the wastewater pool (42); The filtration module (40) further includes a vacuum filtration system, which includes: A filtration tank (43) is located at the bottom of the funnel (41); A water pump (44) is connected at both ends to the filtration tank (43) and the wastewater tank (42).

6. An automatic detection device, characterized in that, The automatic testing equipment includes a host (300), a weighing machine (400), and at least one testing machine (200). The weighing machine (400) and the testing machine (200) are both connected to the host (300). The testing machine (200) is equipped with a plurality of automatic pre-processing devices as described in any one of claims 1 to 5.

7. An automatic detection method for detecting free silica using the automatic detection equipment as described in claim 6, characterized in that, Includes the following steps: The control drive module keeps the reaction vessel (10) in a first state where the position of the outlet (13) is higher than the low liquid level zone (17); Add 0.1g to 0.2g of sample into the reaction vessel (10) through the feed inlet (11); The control delivery module (20) adds 15 ml of pyrophosphate into the reaction vessel (10) to obtain a mixture; The heat exchange module (30) is controlled to keep the mixture in the reaction vessel (10) at an environment of 245℃~250℃ for 15 minutes, while blowing air into the reaction vessel (10) to stir and mix the sample with pyrophosphate. Cool the mixture to 40℃~50℃; The control delivery module (20) adds distilled water at 50℃~80℃ to the reaction vessel (10) to make the volume of the mixture 40ml~50ml, while blowing air to stir; The control delivery module (20) adds distilled water at 50℃~80℃ to the reaction vessel (10) again, so that the volume of the mixture is 150ml~200ml, while blowing air to stir. The heat exchange module (30) controls the heating of the mixture to boiling; The control drive module drives the reaction vessel (10) to rotate to the second state where the position of the discharge port (13) is higher than the low liquid level zone (17), so that the mixture in the reaction vessel (10) is poured into the filter module (40); The control delivery module (20) draws cleaning fluid through the inlet (11) to rinse the reaction vessel (10), so that the reaction mixture is transferred to the filter module (40); Remove the filter paper.

8. The automatic detection method as described in claim 7, characterized in that, The step of adding distilled water at 50°C to 80°C to the reaction vessel (10) via the control delivery module (20) also includes: The preheating module (28) is used to preheat the distilled water.

9. The automatic detection method as described in claim 8, characterized in that, The step of the control and delivery module (20) drawing cleaning fluid through the inlet (11) to rinse the reaction vessel (10) so that the reaction mixture is transferred to the filtration module (40) further includes: The control delivery module (20) draws hydrochloric acid solution through the inlet (11) to flush the reaction vessel; The control delivery module (20) draws distilled water through the feed inlet (11) to rinse the reaction vessel; Observe the pH detector installed in the wastewater tank (42); When the pH detector reports an acidic reaction, the delivery module (20) continues to draw distilled water through the inlet (11) to rinse the reaction vessel (10); When the pH detector reports no acidic reaction, the control delivery module (20) stops drawing distilled water.

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