Automatic sampling machine and sampling method

Abstract

The automatic sampling machine has a housing, a door provided in the housing, a sampling chamber provided in the housing, and a bottle holding mechanism. The sampling chamber is divided into a sampling chamber and a transition chamber, the door faces the transition chamber, and a gate and a passage unit located on the gate are provided between the sampling chamber and the transition chamber. The bottle holding mechanism includes a drive unit, a drive rod connected to the drive unit, and a bottle holding base on which a sampling bottle is placed. The bottle holding base is normally located in the transition chamber and is positioned in the sampling chamber or the transition chamber upon pulling of the drive rod. The gate is not opened simultaneously with the door and does not communicate between the sampling chamber and the transition chamber. When the bottle holding base is located in the transition chamber and the gate is closed, the passage unit allows the drive rod to be positioned therein.

Description

[Technical Field]

[0001] The present invention relates to an automatic sampler and a sampling method thereof, and more particularly to an automatic sampler and a sampling method thereof that can effectively reduce sampling contamination. [Background technology]

[0002] Patent proposals such as TW M635474, TW M657907, TW M634295, CN 114471775A, CN 114424067A, TW I616651, and TW I650555 disclose automatic sampling technology, which involves using an automatic sampling device to extract the required chemical solution and fill it into a sampling bottle, thereby reducing the risk of contact with the chemical solution when extracted manually and avoiding secondary contamination of the sampled solution due to operational errors.

[0003] However, front-opening automatic sampling devices cannot actually ensure the cleanliness of the internal space of the sampling chamber. Current automatic sampling devices are equipped with a suction mechanism within the sampling chamber to suck out gas within the sampling chamber and prevent contamination of the sampling chamber by impure gas. However, when the door of the automatic sampling device is opened and the sampling chamber is exposed, outside air still flows into the sampling chamber, increasing the risk of contamination of the sampling chamber. Summary of the Invention [Problem to be solved by the invention]

[0004] The main object of the present invention is to solve the problem that current automatic sampling devices still cannot reduce the contamination caused by outside air entering the sampling chamber. [Means for solving the problem]

[0005] To achieve the above object, the present invention provides an automatic sampling machine having a housing, a door provided in the housing, a sampling chamber provided within the housing, and a bottle holding mechanism. The sampling chamber is divided into a sampling chamber and a transition chamber, the door faces the transition chamber, and a gate and a passage unit located on the gate are provided between the sampling chamber and the transition chamber. The bottle holding mechanism includes a drive unit, a drive rod provided within the sampling chamber and connected to the drive unit, and a bottle holder provided within the sampling chamber and pulled by the drive rod, where a sampling bottle is placed on the bottle holder. The bottle holder is normally located within the transition chamber and can be moved to either the sampling chamber or the transition chamber upon being pulled by the drive rod. The gate is not opened simultaneously with the door and does not communicate between the sampling chamber and the transition chamber. When the bottle holder is located in the transition chamber and the gate is closed, the passage unit allows the drive rod to be located therein.

[0006] In one embodiment, the passage unit includes an aperture and a blocking member provided in the gate and capable of selectively blocking the aperture.

[0007] In one embodiment, the closure member includes a body capable of closing the aperture, and a pivot arm pivotally mounted to the gate to allow the body to rotate relative to the aperture.

[0008] In one embodiment, the gate has multiple door pieces and the aperture is formed by at least one of the door pieces.

[0009] In one embodiment, the automatic sampling machine has a cap removal mechanism provided in the sampling chamber and a liquid injection mechanism provided in the sampling chamber, the cap removal mechanism including a motor, at least one link driven by the motor and displaceable relative to the bottle holder, and an uncapping claw pulled by the link and capable of providing uncapping, and the liquid injection mechanism includes at least one chemical solution tube and a cleaning solution tube.

[0010] In one embodiment, the automatic sampling machine includes a suction mechanism mounted on the housing and adapted to evacuate at least the sampling chamber.

[0011] In one embodiment, the automatic sampling machine includes an inert gas supply mechanism mounted in the housing and configured to supply an inert gas to at least the sampling chamber.

[0012] In addition to the above, the present invention provides a sampling method for an automatic sampler, the method comprising: Step 1: starting an automatic sampling machine having a housing, a door provided in the housing, a sampling chamber provided in the housing, and a bottle holding mechanism provided in the sampling chamber, wherein the sampling chamber is divided into a sampling chamber and a transition chamber, the door faces the transition chamber, a gate and a passage unit located on the gate are provided between the sampling chamber and the transition chamber, and the bottle holding mechanism includes a drive unit, a drive rod connected to the drive unit, and a bottle holding base on which a sampling bottle is placed and which is pulled by the drive rod, wherein the drive rod is located in the passage unit and the bottle holding base is located in the transition chamber; Step 2: after the sampling bottle is placed on the bottle holder, opening the gate, displacing the driving rod, and moving the bottle holder from the transfer chamber to the sampling chamber; after the bottle holder is located in the sampling chamber, closing the gate, and allowing the sampling bottle to perform sampling; and step 3, after the sampling operation is completed, opening the gate, displacing the drive rod, returning the bottle holder from the sampling chamber to the transition chamber, closing the gate, positioning the drive rod within the passing unit, and removing the sampling bottle.

[0013] In one embodiment, step 1 includes the substep of activating a suction mechanism within the automatic sampling machine to evacuate air into at least the sampling chamber when activating the automatic sampling machine.

[0014] In one embodiment, step 1 includes the sub-step of activating an inert gas supply mechanism in the automatic sampling machine to supply inert gas into at least the sampling chamber when activating the automatic sampling machine, and activating the suction mechanism after the operation of the inert gas supply mechanism is completed.

[0015] In one embodiment, step 2 includes the substeps of driving an opening mechanism in the automatic sampling machine to open and hold the cap of the sampling bottle, injecting the liquid in the liquid tube of the liquid injection mechanism in the automatic sampling machine into the bottle body of the sampling bottle, screwing the cap with the opening mechanism, driving a link to rotate the bottle holder and the sampling bottle, and then opening the cap with the opening mechanism and driving the bottle holding mechanism to pour out the liquid in the sampling bottle and then sample it.

[0016] In one embodiment, step 2 includes a sub-step of driving the link to allow the bottle holder and the sampling bottle to stand in reverse orientation for a certain period of time. [Effects of the Invention]

[0017] Compared with conventional devices, the present invention has the following advantages: The automatic sampling device of the present invention divides the sampling chamber into the sampling chamber and the transition chamber, and installs a gate between the sampling chamber and the transition chamber, so that the gate cannot be opened simultaneously with the door, preventing communication between the sampling chamber and the transition chamber, preventing contamination from the outside of the door from entering the sampling chamber and preventing the sampled vapor from escaping and polluting the environment. Furthermore, due to the installation of the passing unit, when the bottle holder is located in the transition chamber, the driving rod does not affect the closing of the gate, preventing communication between the sampling chamber and the transition chamber. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a schematic diagram of an automatic sampling machine according to an embodiment of the present invention. [Figure 2] FIG. 1 is a schematic diagram (1) of a sampling chamber according to an embodiment of the present invention. [Figure 3] FIG. 2 is a schematic diagram (II) of a sampling chamber according to an embodiment of the present invention. [Figure 4] FIG. 3 is a schematic diagram (3) of a sampling chamber according to an embodiment of the present invention. [Figure 5] 1 is a schematic diagram showing a bottle holder positioned in a sampling chamber in one embodiment of the present invention. FIG. [Figure 6] FIG. 10 is a schematic diagram of gate opening in one embodiment of the present invention. [Figure 7] 1 is a schematic diagram of a bottle holder positioned in a transition chamber and a gate closed in accordance with an embodiment of the present invention; FIG. [Figure 8] FIG. 1 is a schematic diagram (1) of a sampling process according to an embodiment of the present invention. [Figure 9] FIG. 2 is a schematic diagram (II) of the sampling process according to an embodiment of the present invention. [Figure 10] 1 is a schematic diagram (III) of the sampling process according to an embodiment of the present invention; [Figure 11] 1 is a schematic diagram of a waste discharge system according to one embodiment of the present invention; [Figure 12] FIG. 1 is a first step diagram of an embodiment of the present invention. [Figure 13] FIG. 2 is a second step diagram of an embodiment of the present invention. [Figure 14] FIG. 3 is a flow chart (3) of an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] The detailed description and technical contents of the present invention will be explained below based on the drawings.

[0020] 1 to 7, the present invention provides an automatic sampling machine 20, which includes a housing 21, a door 22, a sampling chamber 23, and a bottle holding mechanism 25. The door 22 is provided on the housing 21 and is pivotable relative to the housing 21 to open and close the housing 21. The pivoting of the door 22 is based on a user's operation but is not controlled by the automatic sampling machine 20, and communication between the interior space of the housing 21 and the outside is determined by whether the door 22 is open or closed.

[0021] The sampling chamber 23 is provided within the housing 21 and is divided into a sampling chamber 231 and a transition chamber 232. The sampling chamber 231 is for performing sampling operations, and the door 22 faces the transition chamber 232. The transition chamber 232 is located between the sampling chamber 231 and the external environment and serves as a transition region between the sampling chamber 231 and the external environment. A gate 233 and a passing unit 234 are provided between the sampling chamber 231 and the transition chamber 232. The opening and closing of the gate 233 is controlled by the automatic sampler 20. The passing unit 234 is provided on the gate 233, and the gate 233 and the passing unit 234 collectively determine the communication between the sampling chamber 231 and the transition chamber 232. In particular, the sampling chamber 231 does not normally communicate with the transition chamber 232; the sampling chamber 231 communicates with the transition chamber 232 only when the gate 233 is opened.

[0022] The bottle holding mechanism 25 includes a drive unit 251, a drive rod 252, and a bottle holder 253. The drive unit 251 is located within the housing 21 and is driven by electricity. In one embodiment, the drive unit 251 is installed in an independent space 210 adjacent to the sampling chamber 23. The drive rod 252 and the bottle holder 253 are provided within the sampling chamber 231. The drive rod 252 is connected to the drive unit 251. The bottle holder 253 is used to place the sampling bottle 80. The bottle holder 253 is connected to the drive rod 252 but can be pulled by the drive rod 252. The bottle holder 253 is normally located in the transition chamber 232. The normal state of the bottle holder 253 refers to a standby state in which the bottle holder 253 is not pulled by the driving rod 252 and the sampling bottle 80 is not placed thereon when the automatic sampling machine 20 is first started. After being pulled, the bottle holder 253 is displaceable, moving along the axial direction of the driving rod 252 to move between the sampling chamber 231 and the transition chamber 232, and rotating about the driving rod 252.

[0023] 1 to 7 and 12 to explain the sampling method 90 of the automatic sampler 20. It is assumed that the automatic sampler 20 is not activated at the beginning of the sampling method 90. In step 1 91, the automatic sampler 20 is activated. At this time, the drive rod 252 is located in the passing unit 234, but the bottle holder 253 is located in the transition chamber 232. In step 2 92, after the sampling bottle 80 is placed on the bottle holder 253, the gate 233 is opened, the drive rod 252 is displaced, and the bottle holder 253 is moved from the transition chamber 232 to the sampling chamber 231. After the bottle holder 253 is located in the sampling chamber 231, the gate 233 is closed, allowing the sampling bottle 80 to perform the sampling operation. Next, in step 3 93, after the sampling bottle 80 has completed sampling, the gate 233 is opened, the drive rod 252 is displaced, and the bottle holder 253 is returned from the sampling chamber 231 to the transition chamber 232. The gate 233 is then closed, and the drive rod 252 is positioned within the passing unit 234. At this time, although the drive rod 252 is positioned within the passing unit 234, the passing unit 234 is still engaged with the drive rod 252, so that the sampling chamber 231 and the transition chamber 232 are still not in communication with each other. Therefore, even if the door 22 is opened and the sampling bottle 80 is removed, there is still no communication between the outside of the automatic sampler 20 and the inside of the sampling chamber 231, which can prevent contamination.

[0024] From the above, the automatic sampler 20 of the present invention maintains a non-communication between the sampling chamber 231 and the transition chamber 232 by installing the gate 233. Furthermore, since the gate 233 and the door 22 cannot be opened simultaneously, it reduces the possibility of external contamination flowing directly into the sampling chamber 231 through the transition chamber 232, and also reduces the possibility of chemical vapors in the sampling chamber 231 leaking out through the transition chamber 232 and causing environmental pollution. In addition, the installation of the passing unit 234 means that when the driving rod 252 is located at the passing unit 234, the driving rod 252 does not affect the closing of the gate 233.

[0025] 2 to 8 , in one embodiment, the passage unit 234 includes an aperture 235 and a blocking member 236. The aperture 235 allows the drive rod 252 to be placed therein and does not affect the drive rod 252 from protruding from the sampling chamber 231 into the transition chamber 232 when the gate 233 is closed. The blocking member 236 is provided on the gate 233 and can selectively block the aperture 235. For example, the blocking member 236 is controlled by an external mechanism. When the drive rod 252 is not in the aperture 235, the blocking member 236 is controlled by the external mechanism to block the aperture 235.

[0026] In another example, the blocking member 236 can block the opening 235 by utilizing its own structure. In one embodiment, the blocking member 236 includes a main body 237 capable of closing the opening 235 and a pivot arm 238 pivoted on the gate 233, the main body 237 having a certain weight, and when the drive rod 252 is not in the opening 235, the pivot arm 238 causes the main body 237 to close the opening 235 by the weight of the main body 237. Similarly, when the drive rod 252 is positioned in the opening 235, the drive rod 252 interferes with the position of the main body 237, pushing the main body 237 against the drive rod 252, causing the main body 237 to rotate appropriately relative to the gate 233 around the pivot point between the pivot arm 238 and the gate 233 as an axis, and further causing the drive rod 252 to pass through the opening 235. Furthermore, the main body 237 has a certain weight so that the main body 237 can rotate relative to the gate 233 in a swinging manner, and the swing width of the main body 237 is sufficient to not interfere with the position of the driving rod 252 and to position the driving rod 252 in the opening 235.

[0027] In another embodiment, the passing unit 234 further includes at least one seal (not shown), which is disposed within the opening 235 and is used to close the gap between the opening 235 and the drive rod 252. In one embodiment, each of the at least one seal may be an elastic member or a rubber member, and there are many possible embodiments of the at least one seal, and any of them that are used to prevent communication between the sampling chamber 231 and the transition chamber 232 are within the scope of the present invention.

[0028] In a further embodiment, the gate 233 has multiple door pieces 240, which can contact each other when the gate 233 is closed, and the door pieces 240 and the passage unit 234 jointly restrict communication between the sampling chamber 231 and the transition chamber 232. The aperture 235 may be formed by at least one of the door pieces 240, and any of these may be within the scope of the present invention. In this embodiment, the number of door pieces 240 is two, and the aperture 235 is jointly formed by the two door pieces 240.

[0029] In one embodiment, the gate 233 of the present invention is driven by electricity, and a control mechanism 245 is provided on the gate 233. The control mechanism 245 includes at least one rail 246 provided on the door pieces 240 and at least one drive motor 247 provided on the rail 246, and the at least one drive motor 247 has an output shaft 248, and when the at least one drive motor 247 is activated, the output shaft 248 displaces the door pieces 240 along the at least one rail 246. In this way, the gate 233 can be controlled to be opened or closed.

[0030] 1, the automatic sampling machine 20 of the present invention has at least one door lock sensor 222, which is provided on at least the door 22 and is used to ensure that the door 22 is closed. When the at least one door lock sensor 222 detects that the door 22 is closed, the gate 233 is opened. In one embodiment, the door 22 and the gate 233 have visible areas 221 and 242, respectively, to allow a user to view the current operating status of the automatic sampling machine 20.

[0031] According to another aspect, in order to reliably reduce communication between the gas in the sampling chamber 231 and the outside, in one embodiment, the automatic sampling machine 20 of the present invention has a suction mechanism 26 that is provided in the housing 21 and bleeds air into at least the sampling chamber 231. In another embodiment, the automatic sampling machine 20 has an inert gas supply mechanism 27 that is provided in the housing 21 and supplies inert gas to at least the sampling chamber 231.

[0032] 2, 9, and 10, the automatic sampling machine 20 includes a cap removal mechanism 28 and a liquid injection mechanism 29, both of which are provided in the sampling chamber 231 and perform operations on the sampling bottle 80. The cap removal mechanism 28 is for removing the cap from the sampling bottle 80, and includes a motor 281, at least one link 282 connected to the motor 281, and an uncapping claw 283 connected to the at least one link 282, the at least one link 282 being displaceable to the bottle holder 253 after being pulled by the motor 281, the uncapping claw 283 being able to hold the cap 81 of the sampling bottle 80, and being able to turn the cap 81 to unscrew it after being pulled by the at least one link 282, and the uncapping claw 283 being able to tighten the cap 81. The liquid injection mechanism 29 is used to perform the liquid injection operation for the sampling bottle 80, and includes at least one chemical liquid tube 291 and a cleaning liquid tube 292. Each of the at least one chemical liquid tube 291 supplies the chemical liquid to be sampled, and the cleaning liquid tube 292 is used to supply clean water, such as deionized water (DI WATER).

[0033] In another embodiment, referring to Figures 8 and 11, the automatic sampling machine 20 has a waste discharge mechanism 30, which is installed in the housing 21, located at the bottom of the housing 21, and connected to the sampling chamber 231. The waste discharge mechanism 30 includes at least one waste discharge pipe 301 connected to the sampling chamber 231, a waste liquid recovery tank 302 connected to the at least one waste discharge pipe 301, and an extraction motor 303 connected to the waste liquid recovery tank 302. The waste discharge pipe 301 is installed at the bottom of the sampling chamber 231, and waste liquid flows into the waste liquid recovery tank 302 through the waste discharge pipe 301 by gravity. After the extraction motor 303 is started, the waste liquid in the waste liquid recovery tank 302 can be sucked and discharged to the outside. In another implementation, the sampling chamber 23 has at least one inclined surface 243 provided at the bottom of the sampling chamber 231, and the inclination direction of the at least one inclined surface 243 faces the communication point between the at least one waste discharge pipe 301 and the sampling chamber 231. In this embodiment, the sampling chamber 23 has at least one waste discharge hole 244 that communicates between the waste discharge mechanism 30 and the sampling chamber 231, and the at least one waste discharge hole 244 is provided on the at least one inclined surface 243.

[0034] Next, the sampling method 90 of the present invention will be described. Referring to Figures 1 to 10 and 13, in one embodiment, the bottle holder 253 may be located in the sampling chamber 231 at the beginning of the sampling method 90. When the automatic sampler 20 is started, the bottle holder 253 is displaced from the sampling chamber 231 to the transition chamber 232 by driving the drive rod 252. In another embodiment, step 191 of the present invention includes a sub-step 911 in which, when the automatic sampler 20 is started, the suction mechanism 26 in the automatic sampler 20 is started to bleed air into at least the sampling chamber 231. In another embodiment, step 191 of the present invention includes a sub-step 912 in which, when the automatic sampler 20 is started, the inert gas supply mechanism 27 in the automatic sampler 20 is started to supply inert gas to at least the sampling chamber 231, and the suction mechanism 26 is started after the operation of the inert gas supply mechanism 27 is completed. In this embodiment, the inert gas supply mechanism 27 does not operate simultaneously with the suction mechanism 26, and the suction mechanism 26 is activated after the operation of the inert gas supply mechanism 27 is completed.

[0035] Also, in step 2 92, when sampling, the cap 81 of the sampling bottle 80 is turned and held by the cap opening mechanism 28, and then the bottle holding mechanism 25 is driven to rotate the sampling bottle 80 toward the chemical liquid tube 291 of the liquid injection mechanism 29, thereby filling the sampling bottle 80 with the chemical liquid waiting to be sampled.

[0036] In addition, the sampling method 90 of the present invention first cleans the sampling bottle 80 before performing the sampling operation. In one embodiment, step 2 92 includes a sub-step 921 of driving the cap removal mechanism 28 in the automatic sampling machine 20 to open and hold the cap 81 of the sampling bottle 80, injecting the chemical solution in the chemical solution tube 291 of the liquid injection mechanism 29 into the bottle body 82 of the sampling bottle 80, driving the cap removal mechanism 28 to screw on the cap 81, driving the drive rod 252 to rotate the bottle holder 253 and the sampling bottle 80, opening the cap 81 with the cap removal mechanism 28, and driving the bottle holder mechanism 25 to dispense the liquid from the sampling bottle 80, and then performing sampling. In this embodiment, the drive rod 252 can rotate the bottle holder 253 and the sampling bottle 80 counterclockwise and clockwise, respectively. Furthermore, step 2 92 includes a sub-step 922 in which the drive rod 252 is driven to rotate the bottle holder 253 and the sampling bottle 80 in an inverted position and leave them stationary for a certain period of time, thereby ensuring that the inside of the cap 81 of the sampling bottle 80 is cleaned using the chemical solution.

[0037] In a further embodiment, step two 92 includes a sub-step 923 of washing the outside of the sampling bottle 80 with the cleaning solution in the cleaning solution tube 292 of the liquid injection mechanism 29 before the cap 81 is opened, and then drying the sampling bottle 80 with the inert gas supply mechanism 27.

[0038] In addition, the sampling method 90 of the present invention cleans the sampling bottle 80 after sampling is completed. In one embodiment, the sampling method 90 includes step 3 93, which includes sub-step 931 of tightening the cap 81 with the cap removal mechanism 28, driving the cleaning liquid tube 292 of the liquid injection mechanism 29 to clean the outside of the sampling bottle 80, and then drying the sampling bottle 80 with the inert gas supply mechanism 27.

[0039] 14, the sampling method 90 includes step four 94 in which the door 22 is opened after the gate 233 is closed. In this embodiment, the door 22 is controlled by the door lock sensor 222. In step two 92, when the gate 233 is opened, the door lock sensor 222 prevents the door 22 from being opened, and in step four 94, the door lock sensor 222 allows the door 22 to be opened. [Explanation of symbols]

[0040] 20: Automatic sampling machine 21: Cabinet 210: Independent space 22: Door 221:Visible area 222: Door lock sensor 23: Sampling room 231: Sampling chamber 232: Transition chamber 233: Gate 234: Passing unit 235: Open hole 236: Closure member 237:Main body 238: Pivot arm 240: Door piece 242:Visible area 243: Inclined surface 244: Waste discharge hole 245: Control mechanism 246: Rail 247: Drive motor 248: Output shaft 25: Bottle holding mechanism 251: Drive unit 252: Drive rod 253: Bottle holder 26: Suction mechanism 27: Inert gas supply mechanism 28: Opening mechanism 281: Motor 282: Link 283: Opening claw 29: Liquid injection mechanism 291: Chemical tube 292: Cleaning solution tube 30: Waste discharge mechanism 301: Waste discharge pipe 302: Waste liquid collection tank 303: Extraction motor 80: Sampling bottle 81: Cap 82: Bottle body 90: Sampling method 91: Step 1 911: Substep 912: Substep 92: Step 2 921: Substep 922: Substep 923: Substep 93: Step Three 931: Substep 94: Step Four

Claims

1. An automatic sampling machine having a housing and a door provided in the housing, a sampling chamber provided in the housing, the sampling chamber being divided into a sampling chamber and a transition chamber, the door facing the transition chamber, and a gate and a passing unit positioned on the gate being provided between the sampling chamber and the transition chamber; a bottle holding mechanism including a drive unit, a drive rod provided in the sampling chamber and connected to the drive unit, and a bottle holding table provided in the sampling chamber and pulled by the drive rod, the bottle holding table including a bottle holding mechanism on which a sampling bottle is placed; wherein the bottle holder is normally positioned within the transition chamber and is positioned in the sampling chamber or the transition chamber based on the pulling of the drive rod, the gate is not opened simultaneously with the door and does not connect the sampling chamber and the transition chamber, and when the bottle holder is positioned in the transition chamber and the gate is closed, the passing unit allows the drive rod to be positioned therein.

2. 2. The automatic sampling machine according to claim 1, wherein the passage unit includes an aperture and a blocking member provided in the gate and capable of selectively blocking the aperture.

3. 3. The automatic sampling machine according to claim 2, wherein the closing member includes a main body capable of closing the opening, and a pivot arm pivotally attached to the gate and capable of rotating the main body relative to the opening.

4. 4. An automatic sampling machine according to claim 2, wherein the gate has a plurality of door pieces, and the aperture is formed by at least one of the door pieces.

5. The automatic sampling machine of claim 1, characterized in that it has a cap removal mechanism provided in the sampling chamber and a liquid injection mechanism provided in the sampling chamber, the cap removal mechanism including a motor, at least one link driven by the motor and displaceable relative to the bottle holding base, and an uncapping claw pulled by the link and capable of providing cap removal, and the liquid injection mechanism includes at least one chemical solution tube and a cleaning solution tube.

6. 2. The automatic sampling machine according to claim 1, further comprising a suction mechanism provided in the housing for extracting air from at least the sampling chamber.

7. 7. The automatic sampling machine according to claim 6, further comprising an inert gas supply mechanism provided in the housing for supplying an inert gas to at least the sampling chamber.

8. A sampling method for an automatic sampler, comprising: Step 1: starting an automatic sampling machine having a housing, a door provided in the housing, a sampling chamber provided in the housing, and a bottle holding mechanism provided in the sampling chamber, the sampling chamber being divided into a sampling chamber and a transition chamber, the door facing the transition chamber, a gate and a passing unit located on the gate between the sampling chamber and the transition chamber, the bottle holding mechanism including a drive unit, a drive rod connected to the drive unit, and a bottle holding base on which a sampling bottle is placed and which is pulled by the drive rod, the drive rod being located in the passing unit, and the bottle holding base being located in the sampling chamber; Step 2: after the sampling bottle is placed on the bottle holder, opening the gate, displacing the driving rod, and moving the bottle holder from the transfer chamber to the sampling chamber; after the bottle holder is located in the sampling chamber, closing the gate, and allowing the sampling bottle to perform sampling; and step 3, after the sampling operation is completed, opening the gate, driving the drive rod, returning the bottle holder from the sampling chamber to the transfer chamber, closing the gate, and positioning the drive rod within the passing unit to remove the sampling bottle.

9. 9. The sampling method for an automatic sampler according to claim 8, wherein the passage unit includes an aperture and a blocking member provided in the gate and capable of selectively blocking the aperture.

10. 10. The sampling method for an automatic sampler according to claim 9, wherein the closing member includes a main body capable of closing the opening, and a pivotable arm pivotally attached to the gate and capable of rotating the main body relative to the opening.

11. 11. The sampling method for an automatic sampler according to claim 9, wherein the gate has a plurality of door pieces, and the opening is formed by at least one of the door pieces.

12. 9. The sampling method for an automatic sampler according to claim 8, wherein step 1 includes a sub-step of activating a suction mechanism within the automatic sampler to bleed air from at least the sampling chamber when the automatic sampler is activated.

13. 13. The sampling method for an automatic sampler according to claim 12, wherein step 1 includes the sub-step of activating an inert gas supply mechanism in the automatic sampler to supply inert gas to at least the sampling chamber when activating the automatic sampler, and activating the suction mechanism after operation of the inert gas supply mechanism is completed.

14. 9. The sampling method for an automatic sampler according to claim 8, wherein step 2 includes the sub-steps of driving an opening mechanism in the automatic sampler to open and hold the cap of the sampling bottle, injecting liquid from a liquid tube of a liquid injection mechanism in the automatic sampler into the bottle body of the sampling bottle, screwing the cap with the opening mechanism, driving a link to rotate the bottle holder and the sampling bottle, and then opening the cap with the opening mechanism and driving the bottle holding mechanism to pour out the liquid from the sampling bottle and then sample it.

15. 15. The sampling method for an automatic sampler according to claim 14, wherein step 2 includes a sub-step of driving the link so as to place the bottle holder and the sampling bottle in an inverted position for a predetermined period of time.

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