Automatic Sampling Device

Abstract

The automatic sampling device includes a cabinet, a bottle gripping unit, a cap removal unit, a sampling target substance supply unit, a cleaning liquid supply unit, a gas supply unit, and an operation management unit. The operations performed by the operation management unit include controlling the cap removal unit to open a sampling bottle, controlling the bottle gripping unit to receive the sampling target substance from the bottle opening, and then controlling the cap removal unit to reattach the bottle cap, and then controlling the bottle gripping unit to invert the sampling bottle and leave it for a certain period of time before pouring the sampling target substance, controlling the bottle gripping unit to receive the sampling target substance from the bottle opening, and then controlling the cap removal unit to reattach the bottle cap, and controlling the cleaning liquid supply unit and the gas supply unit to provide the cleaning liquid and the inert gas, respectively, to clean the outer surface of the sampling bottle.

Description

[Technical Field]

[0001] The present invention relates to the technical field of sampling devices, and more particularly to automatic sampling devices. [Background technology]

[0002] According to research, many people in the technological manufacturing industry have implemented automatic sampling, as disclosed in, for example, TWM635474, TW M657907, CN114471775A, CN114424067A, TWI616651, and TWI650555. As can be seen from the above-mentioned patent publications, current automatic sampling technology involves extracting a portion of a chemical liquid using a sampling system, and then filling the extracted chemical liquid into a sampling bottle via a liquid supply pipe to complete the liquid collection operation. Automatic sampling technology can reduce the risk of human contact with the chemical liquid and avoid secondary contamination of the sampled liquid due to human operation error.

[0003] However, among the prior art patent publications, TWI616651 and TWI650555 only propose the technical concept of automatic sampling, and do not disclose a technique for cleaning the sampling bottle in the sampling system during sampling. Therefore, in the sampling systems disclosed in TWI616651 and TWI650555, the extracted chemical liquid may still be contaminated by the sampling bottle during sampling.

[0004] To address these issues, CN114471775A and CN114424067A incorporate a sampling bottle cleaning module in their sampling equipment, which sprays ultrapure water onto the sampling bottles to improve their cleanliness. However, the cleaning modules in CN114471775A and CN114424067A are complex in structure, and the volume of the sampling device is limited to accommodate the space available in the manufacturing site. As a result, the cleaning module takes up an excessive amount of space within the sampling device. Furthermore, the purpose of incorporating a vibrator in the cleaning module in CN114471775A is to clean the inside of the sampling bottle. However, since the vibrator can only shake the sampling bottle and cannot tilt it, the waste liquid within the sample bottle must be extracted separately using a liquid extraction tube.

[0005] TW M657907 and TW M635474 propose a technique for tilting sampling bottles using an automated sampling device. This technique solves the traditional problems of complex manufacturing processes caused by extracting waste liquids using a liquid extraction tube and sample contamination due to incomplete extraction of waste liquids. However, in practice, the most overlooked area when cleaning sampling bottles is the inside of the bottle lid. Because the bottle lid separates from the bottle body when opened, many people clean the inside of the bottle body and the outside of the sampling bottle with ultrapure water, the liquid to be sampled, and inert gas. However, they forget that the inside of the bottle lid may also be contaminated with non-target liquids. When the sampling bottle is completed and the lid is closed, the substances on the inside of the bottle lid mix with the target liquid, thereby contaminating and reducing the purity of the target liquid and affecting the yield of the subsequent manufacturing process. Summary of the Invention [Problem to be solved by the invention]

[0006] A primary object of the present invention is to overcome the deficiencies present in conventional sampling devices. [Means for solving the problem]

[0007] To achieve the above-mentioned object, the present invention provides an automatic sampling device used for sampling acidic or alkaline liquid chemicals, which is implemented in combination with a sampling bottle including a bottle body and a bottle lid, and the automatic sampling device includes a cabinet, a bottle gripping unit, a cap opening unit, a sampling substance supply unit, a cleaning liquid supply unit, a gas supply unit and an operation management unit. the cabinet includes a sampling chamber, the bottle gripping unit is provided in the cabinet, and the bottle gripping unit can hold the sampling bottle and rotate it in the sampling chamber to adjust the position of the bottle mouth of the bottle body; the cap opening unit is provided in the cabinet, and the cap opening unit can open the sampling bottle placed on the bottle gripping unit in the sampling chamber; the sampling target substance supply unit provides the sampling target substance to the sampling chamber, the cleaning liquid supply unit provides the cleaning liquid to the sampling chamber, and the gas supply unit provides the inert gas to the sampling chamber; the work management unit is provided in the cabinet, and the work management unit controls the bottle gripping unit, the cap opening unit, the sampling target substance supply unit, the cleaning liquid supply unit, and the gas supply unit; an operation of controlling the uncorking unit to uncork the sampling bottle; an operation of controlling the bottle gripping unit to bring the bottle mouth of the sampling bottle toward the sampling target substance supply unit, and after the sampling bottle receives the sampling target substance, controlling the cap removal unit to reattach the bottle cap, controlling the bottle gripping unit to turn the sampling bottle upside down and leave it for a certain period of time, and then rotating the sampling bottle to re-open it, and pouring out the sampling target substance in the sampling bottle; an operation of controlling the bottle gripping unit to bring the bottle opening of the sampling bottle toward the sampling target substance supply unit, and after the sampling bottle receives the sampling target substance, controlling the cap opening unit to reattach the bottle cap; and controlling the cleaning liquid supply unit and the gas supply unit to respectively supply the cleaning liquid and the inert gas to the sampling bottle, thereby cleaning the outer surface of the sampling bottle.

[0008] In one embodiment, the automatic sampling device includes a waste liquid collection unit disposed within the cabinet and having a waste liquid receiving pipe whose inlet is located at the bottom edge of the sampling chamber, and a waste liquid collection tank connected to the waste liquid receiving pipe.

[0009] In one embodiment, the waste collection tank is fixed within the cabinet, the waste collection tank is not located in the sampling chamber, and the waste collection unit includes a waste discharge module connected to the waste collection tank.

[0010] In one embodiment, the automatic sampling device includes an exhaust unit capable of extracting gas from the sampling chamber and controlled by the work management unit.

[0011] In one embodiment, the automatic sampling device includes a waste liquid recovery unit disposed within the cabinet, and the exhaust unit is connected to the waste liquid recovery unit and exhausts gas extracted from the sampling chamber to the waste liquid recovery unit.

[0012] In one embodiment, the cabinet includes an isolation chamber corresponding to the sampling chamber, a first door between the isolation chamber and the sampling chamber, and a second door in the isolation chamber, the first door and the second door each having a see-through part, and a sensing switch provided on the second door. [Effects of the Invention]

[0013] The implementation of the technology in the present invention has the following advantages over the prior art: The automatic sampling device proposed in the present invention reduces the risk of human contact with chemical liquids and the possibility of secondary contamination of chemical liquids during sampling. During sampling, the automatic sampling device shakes the bottle gripping unit to fill the sampled substance and pour out the waste liquid, and the work management unit controls the bottle gripping unit to turn the sampling bottle upside down and leave it for a certain period of time, thereby cleaning the inside of the bottle cap, which is often forgotten during conventional sampling processes, and thereby improving the purity of the sample obtained using the sampling bottle. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a schematic three-dimensional view of an automatic sampling device according to an embodiment of the present invention. [Figure 2] FIG. 1 is a schematic diagram of a sampling chamber according to one embodiment of the present invention. [Figure 3] 1 is a schematic diagram of a sampling target material supply unit and an exhaust unit according to an embodiment of the present invention. FIG. [Figure 4] FIG. 2 is a cross-sectional schematic view of a sampling chamber according to an embodiment of the present invention. [Figure 5] 1 is a schematic diagram of a gas supply unit according to an embodiment of the present invention; [Figure 6] 1 is a schematic diagram 1 of a waste liquid recovery unit according to an embodiment of the present invention. [Figure 7] FIG. 2 is a schematic diagram 2 of a waste liquid recovery unit according to an embodiment of the present invention. [Figure 8] 1 is a schematic diagram illustrating a sampling operation according to an embodiment of the present invention. FIG. [Figure 9] FIG. 2 is a schematic diagram illustrating a sampling operation according to an embodiment of the present invention. [Figure 10] 3 is a schematic diagram showing a sampling operation according to an embodiment of the present invention; FIG. [Figure 11]4 is a schematic diagram illustrating a sampling operation according to an embodiment of the present invention. FIG. [Figure 12] 5 is a schematic diagram showing a sampling operation according to an embodiment of the present invention. FIG. [Figure 13] FIG. 2 is a schematic diagram illustrating the operation execution of a task management unit according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0015] 1 to 5, the present invention provides an automatic sampling device 20 for sampling acidic or alkaline liquid chemicals. This device does not support the sampling of liquid chemicals such as sulfuric acid and organic solvents, because sulfuric acid undergoes a highly exothermic reaction when it comes into contact with water, and organic solvents are flammable, making sampling using the automatic sampling device 20 highly dangerous. The automatic sampling device 20 is implemented in combination with a sampling bottle 80, which is used to contain the acidic or alkaline liquid chemical. Hereinafter, the liquid chemical to be contained in the sampling bottle 80 will be referred to as the sample target substance 70. The sampling bottle 80 includes a bottle body 81 that can be used to collect the sample target substance 70, and a bottle lid 82 that can be fitted onto the bottle body 81 to seal the interior space of the bottle body 81 and prevent the sample target substance 70 from leaking to the outside.

[0016] The automatic sampling device 20 includes a cabinet 21, a bottle gripping unit 22, a cap removal unit 23, a sampling target substance supply unit 24, a cleaning liquid supply unit 25, a gas supply unit 26, and an operation management unit 27. The cabinet 21 includes a sampling chamber 211 in which the sampling bottle 80 performs sampling. Specifically, the bottle gripping unit 22 is provided in the cabinet 21 and can grip and rotate the sampling bottle 80 in the sampling chamber 211 to adjust the position of the bottle mouth 83 of the bottle body 81 of the sampling bottle 80. Taking the bottle mouth 83 as an example, the bottle gripping unit 22 can rotate the bottle body 81 a certain angle or a certain number of times and move the bottle body 81 to the right or left so as to perform operations such as cleaning the sampling bottle 80 or filling the sampling target substance 70. For example, the bottle gripping unit 22 can rotate the bottle body 81 180 degrees to turn the bottle body 81 upside down with the bottle mouth 83 facing downwards in order to pour out the liquid in the bottle body 81.

[0017] The cap opening unit 23 is provided in the cabinet 21, and can move in a controlled manner. The range of movement of the cap opening unit 23 overlaps with that of the bottle gripping unit 22, so that the cap opening unit 23 can open the sampling bottle 80 placed in the bottle gripping unit 22 within the sampling chamber 211, and does not affect the bottle gripping unit 22's rotation of the sampling bottle 80, either before the cap opening unit 23 moves or after the cap opening by the cap opening unit 23 is completed.

[0018] The sampling target substance supply unit 24 is provided in the cabinet 21, and supplies the sampling target substance 70 to the sampling chamber 211. The sampling target substance 70 provided by the sampling target substance supply unit 24 may be a single type of liquid chemical or multiple types of liquid chemicals, and the sampling target substance supply unit 24 provides the single liquid chemical through at least one chemical supply line 241, and multiple liquid chemicals should be provided by different chemical supply lines 241 to avoid contamination problems.

[0019] The cleaning liquid supply unit 25 is provided in the cabinet 21 and provides a cleaning liquid to the sampling chamber 211. For example, the cleaning liquid may be deionized water (DI water). In one embodiment, the cleaning liquid supply unit 25 may include at least one cleaning liquid supply line 251 connected to a cleaning liquid storage tank and extracting the cleaning liquid from the cleaning liquid storage tank. The gas supply unit 26 is provided in the cabinet 21 and provides an inert gas to the sampling chamber 211. For example, the inert gas may be nitrogen. In one embodiment, the gas supply unit 26 includes at least one gas supply line 261 connected to a gas storage tank and extracting the inert gas from the gas storage tank. In addition, the cleaning liquid storage tank, the gas storage tank, and the automatic sampling device 20 are not limited to being installed in the same location, and if the cleaning liquid storage tank, the gas storage tank, and the automatic sampling device 20 are installed in different locations, the wiring of the at least one cleaning liquid supply pipe 251 and the at least one gas supply pipe 261 can be implemented according to actual needs, for example, can be wired on the ceiling of the work area.

[0020] The operation management unit 27 is provided in the cabinet 21, and is the core of the automatic sampling device 20 and the main control device that executes the sampling operation. The operation management unit 27 includes a programmable logic controller (abbreviated as PLC), and the programmable logic controller runs a plurality of programs based on a pre-programmed programming language, and based on these programs, it can control the bottle gripping unit 22, the cap removal unit 23, the sampling target substance supply unit 24, the cleaning liquid supply unit 25, and the gas supply unit 26 to execute the sampling operation. Referring to Figures 1 to 13, operations that the operation management unit 27 can control include the following operations 1 to 4.

[0021] In operation 1 (271), the cap opening unit 23 is controlled to move toward the sampling bottle 80, and when it grasps the bottle lid 82 of the sampling bottle 80, it turns the bottle lid 82 to open the sampling bottle 80, and after the opening is complete, the cap opening unit 23 continues to grasp the bottle lid 82 and moves out of the sampling bottle 80, moving away from the sampling bottle 80.

[0022] In operation 2 (272), the bottle gripping unit 22 is controlled to swing the sampling bottle 80 so that the bottle mouth 83 of the sampling bottle 80 faces the sampling target substance supply unit 24, the sampling target substance supply unit 24 is controlled to fill the sampling bottle 80 with the sampling target substance 70, and when the sampling bottle 80 receives a certain amount of the sampling target substance 70, the bottle opening unit 23 is controlled to reattach the bottle cap 82, and the bottle gripping unit 22 is controlled to The sampling bottle 80 is rotated, turned upside down, and left to stand for a certain period of time, for example 10 to 20 seconds, so that the sampling target substance 70 in the sampling bottle 80 comes into contact with the inside of the bottle lid 82.Then, while rotating the sampling bottle 80, the cap opening unit 23 is controlled to open the cap again.At this time, there is a possibility that the sampling target substance 70 in the sampling bottle 80 may become contaminated, so the bottle gripping unit 22 is controlled again to rotate the sampling bottle 80, and the sampling target substance 70 in the sampling bottle 80 is poured out.

[0023] In operation 3 (273), the bottle gripping unit 22 is controlled to swing the sampling bottle 80, so that the bottle mouth 83 of the sampling bottle 80 faces the sampling target substance supply unit 24, and the sampling target substance supply unit 24 is controlled to fill the required sampling amount of the sampling target substance 70 into the sampling bottle 80, and after the sampling bottle 80 receives the sampling target substance 70, the cap opening unit 23 is controlled to reattach the bottle lid 82.

[0024] In operation 4 (274), the cleaning liquid supply unit 25 is controlled to provide the cleaning liquid to the sampling bottle 80 to clean the outer surface of the sampling bottle 80, and then the gas supply unit 26 is controlled to provide an inert gas to the sampling bottle 80 to clean the surface of the sampling bottle 80 and keep the outer surface of the sampling bottle 80 dry.

[0025] Next, the sampling operation of the automatic sampling device 20 will be described. First, the sampling bottle 80 is placed directly on the bottle gripping unit 22 without being opened. When the automatic sampling device 20 starts to perform the sampling operation, the operation management unit 27 executes operation 1 (271) to control the uncorking unit 23 to move toward the sampling bottle 80 to unscrew the bottle lid 82 of the sampling bottle 80, thereby performing uncorking. After unscrewing the bottle lid 82, the uncorking unit 23 continues to hold the bottle lid 82 until the bottle lid 82 is reattached to the bottle body 81. Next, the operation management unit 27 executes operation 2 (272) to control the bottle gripping unit 22 to rotate the bottle body 81 of the sampling bottle 80 so that the bottle opening 83 faces the sampling target material supply unit 24 and receives the sampling target material 70. Thereafter, the cap opening unit 23 is controlled again to reattach the bottle lid 82, and the bottle gripping unit 22 is controlled to turn the sampling bottle 80 upside down and leave it for a certain period of time, thereby bringing the sampling target substance 70 in the sampling bottle 80 into contact with the bottle lid 82. The bottle gripping unit 22 is then controlled to return the sampling bottle 80 to its original position, causing the cap opening unit 23 to open the bottle again, and after the bottle lid 82 is separated, the bottle gripping unit 22 turns the bottle body 81 of the sampling bottle 80 upside down and pours out the sampling target substance 70. Next, the work management unit 27 executes operation 3 (273), controls the bottle gripping unit 22 to reposition the bottle mouth 83 of the sampling bottle 80 facing the sampling target substance supply unit 24, and controls the sampling target substance supply unit 24 to fill the bottle body 81 of the sampling bottle 80 with the sampling target substance 70, and after the sampling bottle 80 receives the sampling target substance 70, controls the uncorking unit 23 to reattach the bottle lid 82.Thereafter, the work management unit 27 executes operation 4 (274) to control the cleaning liquid supply unit 25 to supply the cleaning liquid to the sampling bottle 80 in order to clean the outer surface of the sampling bottle 80, and controls the gas supply unit 26 to supply the inert gas to the sampling bottle 80 in order to dry the outer surface of the sampling bottle 80. At this point, the sampling operation of the automatic sampling device 20 is completed, and the user can remove the sampling bottle 80 from the sampling chamber 211 after sampling.

[0026] As can be seen from the above, the automatic sampling device 20 of the present invention can substantially avoid secondary contamination during sampling and reduce work safety issues caused by sampling errors. Furthermore, under the control of the work management unit 27, the automatic sampling device 20 of the present invention allows the sampling bottle 80 to stand upside down during sampling, rather than temporarily turning the sampling bottle 80 upside down to clean the bottle lid 82, thereby ensuring that the sample target material 70 comes into contact with the inside of the bottle lid 82 and achieving the purpose of cleaning.

[0027] In the above, the work management unit 27 sequentially executes operation 1 (271) to operation 4 (274), but it should be understood that this is just one of the work modes of the work management unit 27, and the work management unit 27 can execute at least one of operation 1 (271) to operation 4 (274) based on the state in which the automatic sampling device 20 is operated. In particular, in one embodiment, the work management unit 27 of the present invention further includes a control interface 275 that is provided on the cabinet 21 and operable, and can provide multiple operation execution items to the control interface 275 so that a user can select at least one of these operation execution items according to their needs, and then drive the work management unit 27 to execute at least one of operation 1 (271) to operation 4 (274) based on the selected item. In other words, the above-mentioned operations 1 (271) to 4 (274) are named merely to facilitate the explanation of the operations that can be performed by the work management unit 27, and are not intended to limit the order in which the operations of the work management unit 27 are performed.

[0028] Furthermore, in another embodiment, the operation management unit 27 performs the aforementioned operations based on a plurality of operating parameters pre-stored in its internal memory, and these operating parameters may be for describing / setting the amount of the sample target material 70 to be supplied when performing operation 2 (272) and operation 3 (273), the amount of the cleaning liquid and the inert gas to be supplied (supply duration), the duration for which the sampling bottle 80 is left upside down, etc., and these operating parameters can be displayed on the control interface 275, and in one embodiment, these operating parameters can also be adjusted by the user according to their needs.

[0029] 2 to 9 and 13, the present invention is directed to more reliably cleaning the sampling bottle 80. In one embodiment, in operation 2 (272), after the sampling bottle 80 receives the sampling target substance 70 and the bottle lid 82 is returned to the bottle body 81, the work management unit 27 controls the bottle gripping unit 22 to rotate the sampling bottle 80 clockwise and counterclockwise, respectively. In another embodiment, the number of times the sampling bottle 80 is rotated clockwise is equal to the number of times it is rotated counterclockwise; for example, the sampling bottle 80 is rotated five times clockwise and then five times counterclockwise. In another embodiment, the operation management unit 27 can also repeat operation 2 (272) at least once based on the setting, and the operation management unit 27 controls the bottle gripping unit 22 and the cap opening unit 23 to continuously clean the sampling bottle 80 until the set number of times is reached, and then performs operation 3 (273).

[0030] In another embodiment, assuming that the sampling bottle 80 is filled with liquid when the automatic sampling device 20 starts the sampling operation, in operation 1 (271), the work management unit 27 controls the cap opening unit 23 to open the bottle, then controls the bottle gripping unit 22 to pour out the liquid inside the sampling bottle 80, and then controls the bottle gripping unit 22 to rotate the bottle body 81, and the cleaning liquid supply unit 25 fills the bottle body 81 with the cleaning liquid, and then controls the bottle gripping unit 22 to rotate the bottle body 81 to pour out the cleaning liquid inside the bottle body 81, and then controls the gas supply unit 26 to dry the sampling bottle 80.

[0031] 1 to 4, the present invention is directed to improving safety during sampling. In one embodiment, the automatic sampling device 20 includes an exhaust unit 28 controlled by the operation management unit 27. The exhaust unit 28 exhausts air during sampling in the sampling chamber 211 so as to maintain a slightly negative pressure inside the sampling chamber 211. Note that this slightly negative pressure state is merely for preventing gas generated by volatilization of the sampling target substance 70 in the sampling chamber 211 from leaking to the outside, and does not affect the supply of gas to the sampling target substance supply unit 24, the cleaning liquid supply unit 25, and the gas supply unit 26. In one embodiment, the exhaust unit 28 is an extraction box provided in the cabinet 21. In another embodiment, the extraction box has a plurality of through-holes 281, and upon startup, the extraction box extracts gas from the sampling chamber 211 through these through-holes 281 to maintain a slightly negative pressure inside the sampling chamber 211. In another embodiment, after performing operation 4 (274), the operation management unit 27 controls the gas supply unit 26 to supply the inert gas to the sampling chamber 211 to dry the sampling chamber 211, thereby achieving the purpose of ventilation.

[0032] 1, 2, 6 to 8, the automatic sampling device 20 of the present invention further integrates a waste liquid recovery function. In one embodiment, the automatic sampling device 20 includes a waste liquid recovery unit 29 installed in the cabinet 21. The waste liquid recovery unit 29 has a waste liquid receiving pipe 291 and a waste liquid recovery tank 292 connected to the waste liquid receiving pipe 291, and the inlet (e.g., reference numeral 293) of the waste liquid receiving pipe 291 is located at the bottom edge of the sampling chamber 211. In order to prevent the waste liquid recovery tank 292 from affecting the sampling of the sampling bottle 80, in another embodiment, the waste liquid recovery tank 292 is fixed within the cabinet 21 and is not located within the sampling chamber 211. The waste liquid recovery unit 29 includes a waste liquid discharge module 294 connected to the waste liquid recovery tank 292.

[0033] More specifically, the waste liquid discharge module 294 includes at least one liquid extraction pipe 295 connected to the waste liquid collection tank 292 and a pump 296 connected to the liquid extraction pipe 295. In another embodiment, the present invention is for detecting the liquid level of the waste liquid collection tank 292, and in one embodiment, the waste liquid collection unit 29 further includes at least one liquid level detection unit 297 connected to the waste liquid collection unit 29, and the liquid level detection unit 297 may include at least one bypass pipe 298 bypassing the waste liquid collection tank 292 and at least one detector 299 provided in the bypass pipe 298, and for example, the at least one detector 299 may be an infrared blocking member or the like. In a further embodiment, the waste liquid collection unit 29 of the present invention is connected to the exhaust unit 28, and the exhaust unit 28 exhausts the gas extracted from the sampling chamber 211 to the waste liquid collection unit 29.

[0033] In another aspect, referring to Figures 1 to 7, the automatic sampling device 20 of the present invention is intended to prevent a user from accidentally putting their hands into the sampling chamber 211 during work, and in one embodiment, the cabinet 21 includes an isolation chamber 212 corresponding to the sampling chamber 211, a first door 213 provided between the isolation chamber 212 and the sampling chamber 211, and a second door 214 provided in the isolation chamber 212, the first door 213 and the second door 214 being arranged at a distance from each other, and the first door 213 and the second door 214 each having a see-through part 215, which allows the user to observe the work status inside the sampling chamber 211 but does not affect the isolation of the user from the sampling chamber 211 and the isolation chamber 212. Furthermore, the second door 214 is provided with a sensing switch 216 for detecting whether the second door 214 is properly closed, and if the sensing switch 216 determines that the second door 214 is not closed, the work management unit 27 cannot perform the sampling work. In another embodiment, the work management unit 27 is provided with an emergency stop switch 276 located in the cabinet 21, and the emergency stop switch 276 is exposed on the surface of the cabinet 21, for example, located in the control interface 275, and when the emergency stop switch 276 is operated, the work in the sampling chamber 211 is forcibly stopped.

[0034] Furthermore, the automatic sampling device 20 of the present invention has the sampling target substance supply unit 24, the gas supply unit 26 and the waste liquid recovery unit 29 integrated into the cabinet 21, and in one embodiment, the cabinet 21 is divided into a plurality of compartments 218, and each of these compartments 218 is provided with the sampling target substance supply unit 24, the gas supply unit 26, the waste liquid recovery unit 29 and the exhaust unit 28. More specifically, the sample target substance supply unit 24 and the gas supply unit 26 are provided with at least one valve 242, 262 connected to one of the chemical supply line 241 and the gas supply line 261, respectively, and the at least one valve 242, 262 can control the supply amount of the sample target substance supply unit 24 and the gas supply unit 26, and the at least one valve 242, 262 is located within one of the compartments 218 in which the sample target substance supply unit 24 and the gas supply unit 26 are provided, and the compartments 218 in which the sample target substance supply unit 24 and the gas supply unit 26 are provided means that the supply ends of the sample target substance supply unit 24 and the gas supply unit 26 are located within the sampling chamber 211. Furthermore, the cabinet 21 of the present invention has a plurality of compartment doors 219 provided in these compartments 218, and in one embodiment, the compartment 218 in which the waste liquid recovery unit 29 is provided has a plurality of compartment doors 219 in order to facilitate maintenance of the waste liquid recovery unit 29. In another embodiment, the automatic sampling device 20 of the present invention places at least the compartment 218 in which the sampling target substance supply unit 24 and the waste liquid recovery unit 29 are provided in a slightly negative pressure state.

[0035] 2 to 4, the bottle gripping unit 22 of the present invention includes a mounting base 221 provided in the sampling chamber 211 and a bottle fastener 222 provided on the mounting base 221, where the mounting base is for mounting the sampling bottle 80, and the bottle fastener 222 is for fixing the sampling bottle 80 to the mounting base 221 to prevent the sampling bottle 80 from falling off when the bottle gripping unit 22 rotates the sampling bottle 80. In another embodiment, the bottle gripping unit 22 further includes an operating rod 223 connected to the mounting base 221 and extending outside the sampling chamber 211, whereby a user can manually control the mounting base 221 and thereby rotate the sampling bottle 80. In another embodiment, the cap opening unit 23 of the present invention includes a cap opener 231, an axial rod 232 connected to the cap opener 231, and a motor (not shown) that drives the axial rod 232, and when the cap opening unit 23 is in operation, the motor is activated to move the axial rod 232, thereby moving or rotating the cap opener 231. [Explanation of symbols]

[0036] 20: Automatic sampling device 21: Cabinet 211: Sampling room 212: Isolation room 213: First Door 214: Second Door 215: Transparent parts 216: Sensor switch 218: Compartment 219: Compartment door 22: Bottle gripping unit 221: Mounting table 222: Bottle fastener 223: Operation stick 23: Opening unit 231: Bottle opener 24: Sampling target material supply unit 241: Chemical supply pipeline 242: Valve 25: Cleaning liquid supply unit 251: Cleaning liquid supply line 26: Gas supply unit 261: Gas supply pipeline 262: Valve 27: Work Management Unit 271: Action 1 272: Action 2 273: Action 3 274: Action 4 275: Control interface 276: Emergency stop switch 28: Exhaust unit 281:Through hole 29: Waste liquid recovery unit 291: Waste liquid receiving pipe 292: Waste liquid collection tank 293:Entrance 294: Waste liquid discharge module 295:Liquid extraction tube 296: Pump 297: Liquid level detection unit 298: Bypass pipe 299: Detector 70: Substances to be sampled 80: Sampling bottle 81: Bottle body 82: Bottle cap 83: Bottle mouth

Claims

1. An automatic sampling device used for sampling acidic or alkaline liquid chemicals, which is implemented in combination with a sampling bottle including a bottle body and a bottle lid, a cabinet containing a sampling chamber; a bottle gripping unit provided in the cabinet, which holds the sampling bottle and rotates it within the sampling chamber to adjust the position of the bottle opening of the bottle body; an uncorking unit provided in the cabinet and capable of uncorking the sampling bottle placed on the bottle gripping unit in the sampling chamber; a sampling target material supply unit for supplying a sampling target material to the sampling chamber; a cleaning fluid supply unit for supplying a cleaning fluid to the sampling chamber; a gas supply unit for providing an inert gas to the sampling chamber; an operation management unit provided in the cabinet, which controls the bottle gripping unit, the cap removal unit, the sampling target substance supply unit, the cleaning liquid supply unit, and the gas supply unit; an operation of controlling the uncapping unit to uncap the sampling bottle; an operation of controlling the bottle gripping unit to bring the bottle mouth of the sampling bottle toward the sampling target substance supply unit, and after the sampling bottle receives the sampling target substance, controlling the cap removal unit to reattach the bottle cap, controlling the bottle gripping unit to turn the sampling bottle upside down and leave it for a certain period of time, and then rotating the sampling bottle to re-open it, and pouring out the sampling target substance in the sampling bottle; an operation of controlling the bottle gripping unit to position the bottle opening of the sampling bottle facing the sampling target substance supply unit, and after the sampling bottle receives the sampling target substance, controlling the cap opening unit to reattach the bottle cap; controlling the cleaning liquid supply unit and the gas supply unit to supply the cleaning liquid and the inert gas to the sampling bottle, respectively, to clean the outer surface of the sampling bottle; a work management unit that executes the Including, An automatic sampling device characterized by:

2. a waste liquid recovery unit provided in the cabinet, the waste liquid receiving pipe having an inlet located at the bottom edge of the sampling chamber, and a waste liquid recovery tank connected to the waste liquid receiving pipe; 2. The automatic sampling device according to claim 1.

3. the waste liquid collection tank is fixed within the cabinet, the waste liquid collection tank is not located in the sampling chamber, and the waste liquid collection unit includes a waste liquid discharge module connected to the waste liquid collection tank.

3. The automatic sampling device according to claim 2.

4. an exhaust unit capable of extracting gas from the sampling chamber and controlled by the operation management unit; 2. The automatic sampling device according to claim 1.

5. a waste liquid recovery unit provided in the cabinet, the exhaust unit being connected to the waste liquid recovery unit and discharging the gas extracted from the sampling chamber to the waste liquid recovery unit; 5. The automatic sampling device according to claim 4.

6. The cabinet includes an isolation chamber provided corresponding to the sampling chamber, a first door provided between the isolation chamber and the sampling chamber, and a second door provided in the isolation chamber, the first door and the second door each having a see-through part, and the second door having a sensing switch.

2. The automatic sampling device according to claim 1.

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