Device and method for analyzing oxygen isotope in inclusion water

Abstract

The invention discloses a device and a method for analyzing oxygen isotopes in inclusion water. The device comprises a grinding and extracting device, a purifying and collecting unit, a vacuumizing device and an EA-IRMS for analyzing the oxygen isotopes, the purifying and collecting unit is communicated with the grinding and extracting device through a second connecting pipe; the grinding and extracting device comprises a base; a heating furnace is arranged at the top of the base; a plurality of heating cavities are formed in the heating furnace; a grinding tank is arranged in the heating cavity; a first connecting pipe communicated with the second connecting pipe is arranged on the grinding tank; a first valve is arranged on the first connecting pipe; a connecting channel is arranged in the grinding tank; two ends of the connecting channel are respectively communicated with the interior of the grinding tank and the first connecting pipe; and the vacuumizing device is communicated with the purifying and collecting unit. Through cooperation of the grinding and extracting device, the EA-IRMS, the first connecting pipe, the first valve, the vacuumizing device, the purification and collection unit and the like, grinding, heating, inclusion water purification and collection and oxygen isotope determination can be independently carried out on a plurality of grinding tanks.

Description

Technical Field

[0001] The present invention relates to the technical field of determination of mineral inclusions, and more particularly to an oxygen isotope analysis device and method for water in inclusions. Background Art

[0002] The determination of the oxygen isotope composition of water in mineral inclusions has a very important tracer role in revealing the sources, migration, evolution and mineralization processes of ore-forming fluids in deposits, and provides a theoretical basis for clarifying the ore-forming mechanism of deposits. Sufficient extraction of water from mineral inclusions, purification, complete conversion and full collection of it are the prerequisites for analyzing the oxygen isotope composition of water in oxygen-free mineral inclusions. For the oxygen isotope analysis of water in oxygen-free mineral inclusions, there are mainly methods such as offline analysis, online analysis, and offline + isotope ratio mass spectrometer (IRMS) analysis to determine the oxygen isotope.

[0003] Existing oxygen isotope analysis devices for water in inclusions can only extract water from inclusions of a single mineral sample, and cannot simultaneously extract and collect the oxygen isotopes of water in multiple groups of mineral samples, resulting in low working efficiency. Summary of the Invention

[0004] In view of this, the present invention provides an oxygen isotope analysis device and method for water in inclusions, and the purpose is to solve the problems in the prior art.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] An oxygen isotope analysis device for water in inclusions includes: a grinding and extraction device, a purification and collection unit for purifying and collecting the extracted water, a vacuum pumping device, and an EA-IRMS for analyzing the oxygen isotope of the extracted water;

[0007] The purification and collection unit is communicated with the grinding and extraction device through a second connecting pipe;

[0008] The grinding and extraction device includes a base; a heating furnace is provided on the top of the base; a plurality of heating chambers are evenly distributed inside the heating furnace; a grinding tank is provided in the heating chamber; the top of the grinding tank extends upward to the outside of the heating furnace and is provided with a top cover; a grinding disc is provided inside the grinding tank; a grinding rod is provided on the top of the grinding disc; the top of the grinding rod penetrates upward through the top cover; a driving device for controlling the grinding disc to grind the mineral sample is provided on the base; a first connecting pipe is provided on the outer side wall of the grinding tank; the other end of the first connecting pipe is communicated with the second connecting pipe; the first connecting pipe is located above the heating furnace; a first valve is provided on the first connecting pipe; a connecting channel is provided inside the tank body of the grinding tank; one end of the connecting channel is communicated with the inside of the grinding tank; the other end of the connecting channel is communicated with the first connecting pipe;

[0009] The vacuum pumping device is communicated with the purification and collection unit through a fourth connecting pipe.

[0010] Preferably, the driving device includes a first motor, a transmission assembly, and two translation mechanisms; the two translation mechanisms are symmetrically arranged on both sides of the heating furnace; the first motor is drivingly connected to the two translation mechanisms through the transmission assembly; an expansion mechanism is provided at the output end of each translation mechanism; a lifting plate is provided above the heating furnace; the lifting plate is connected to the output end of the expansion mechanism; a second motor is provided at the top of the lifting plate; a driving head is provided at the output end of the second motor; a driving groove adapted to the driving head is provided at the top of the grinding rod.

[0011] Preferably, a first magnet is provided at the bottom of the driving head; a second magnet adapted to the first magnet is provided at the inner bottom of the driving groove.

[0012] Preferably, each translation mechanism includes two vertical plates, a lead screw, a moving slide, and two guide rods; the two vertical plates are oppositely arranged on the top of the base; the two ends of the lead screw are respectively rotatably connected to the two vertical plates; the moving slide is arranged on the lead screw; the two guide rods are symmetrically arranged on both sides of the lead screw; the two ends of the guide rod are respectively fixedly connected to the two vertical plates; the guide rod penetrates through the moving slide; the expansion mechanism is arranged on the top of the moving slide.

[0013] Preferably, the transmission assembly includes a synchronous belt and two synchronous belt pulleys; a synchronous belt pulley is provided on each lead screw; the two synchronous belt pulleys are connected by the synchronous belt; the output end of the first motor is connected to one of the lead screws.

[0014] Preferably, an electric heating tube is provided inside the heating cavity; the electric heating tube is of a spiral structure and sleeved outside the grinding tank.

[0015] Preferably, the purification and collection unit includes a main pipeline, a first cold trap, a cold finger condenser, and a plurality of sample collection tubes; the first cold trap is connected in series to the main pipeline; the number of sample collection tubes is the same as that of the grinding jars; all the sample collection tubes are communicated with the main pipeline through a third connecting pipe; the cold finger condenser is connected in parallel to the main pipeline between the vacuum pumping device and the sample collection tubes through a branch pipeline; the fourth connecting pipe is communicated with the main pipeline; the main pipeline is provided with a second valve, a third valve, a fourth valve, a fifth valve, and a sixth valve; the second valve is located between the first cold trap and the second connecting pipe; the third valve is located between the first cold trap and the sample collection tubes; the fourth valve is located between the sample collection tubes and the vacuum pumping device; the fourth valve is a three-way valve; two ports of the fourth valve are respectively communicated with the main pipeline, and the remaining one port is communicated with one end of the branch pipeline; the fifth valve is located between the cold finger condenser and the vacuum pumping device; the sixth valve is located between the vacuum pumping device and the second connecting pipe; a seventh valve is provided on each of the third connecting pipes.

[0016] Preferably, a pressure gauge and an eighth valve are provided on the branch pipeline.

[0017] Preferably, a second cold trap and a ninth valve are provided on the fourth connecting pipe.

[0018] A method for analyzing oxygen isotopes in fluid inclusions in water, using the above-mentioned device for analyzing oxygen isotopes in fluid inclusions in water, includes the following steps:

[0019] S1: Put the mineral samples into the grinding jars in sequence;

[0020] S2: Open all the first valves, use the vacuum pumping device to evacuate the grinding and extraction device and the purification and collection unit, and after the evacuation is completed, close all the first valves;

[0021] S3: The driving device controls the grinding disc inside one of the grinding jars to grind the mineral samples, releasing the gas-phase and liquid-phase products in the fluid inclusions. During this process, the first valve corresponding to this grinding jar is opened, and the remaining first valves are closed;

[0022] S4: After the grinding is completed, use the heating furnace to heat this grinding jar to make the products in the fluid inclusions enter the purification and collection unit, and use the purification and collection unit to purify and collect the water in the fluid inclusions;

[0023] S5: Repeat the steps in S3-S4 to sequentially complete the sample collection of the water in the fluid inclusions in the remaining grinding jars;

[0024] S6: Perform oxygen isotope determination on the collected samples by EA-IRMS.

[0025] The present invention has achieved the following technical effects compared with the prior art: By providing multiple grinding jars, the present invention can hold multiple groups of mineral samples simultaneously. Meanwhile, through the cooperation of a grinding disc, a grinding rod, a driving device, a first connecting pipe, a first valve, a communication channel, a heating furnace, a vacuum pumping device, and a purification and collection unit, the multiple grinding jars can be independently ground, heated, and the inclusion water can be purified and collected. Then, the oxygen isotopes of the collected samples are measured by EA-IRMS, so as to realize the collection and analysis of the oxygen isotopes in the water of multiple groups of mineral samples and improve the analysis efficiency. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of an apparatus for analyzing oxygen isotopes in inclusion water according to the present invention;

[0027] Figure 2 It is a perspective view of the grinding and extraction device;

[0028] Figure 3 It is a top view of the grinding and extraction device;

[0029] Figure 4 It is a side view of the grinding and extraction device;

[0030] Figure 5 It is a main cross-sectional view of the heating chamber;

[0031] Figure 6 It is a side cross-sectional view of the heating chamber;

[0032] In the figure: 1. Vacuum pumping device; 2. Top cover; 3. Second connecting pipe; 4. Base; 5. Heating furnace; 6. Heating chamber; 7. Grinding jar; 8. Grinding disc; 9. Grinding rod; 10. First connecting pipe; 11. First valve; 12. Connection channel; 13. Fourth connecting pipe; 14. Ninth valve; 15. First motor; 16. Lifting plate; 17. Second motor; 18. Driving head; 19. Driving groove; 20. First magnet; 21. Second magnet; 22. Vertical plate; 23. Lead screw; 24. Moving slide; 25. Guide rod; 26. Synchronous belt; 27. Synchronous belt pulley; 28. Electric heating tube; 29. Main pipeline; 30. First cold trap; 31. Cold finger condenser; 32. Sample collection tube; 33. Third connecting pipe; 34. Branch pipeline; 35. Second valve; 36. Third valve; 37. Fourth valve; 38. Fifth valve; 39. Sixth valve; 40. Seventh valve; 41. Pressure gauge; 42. Eighth valve; 43. Second cold trap; 44. Telescopic mechanism; 45. Connection seat; 46. Vacuum gauge. Detailed Embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Referring to Figures 1-6 As shown, the present invention provides an oxygen isotope analysis device for inclusions in water, including: a grinding and extraction device, a purification and collection unit for purifying and collecting the extracted water, a vacuum pumping device 1, and an EA-IRMS for analyzing the oxygen isotope of the extracted water; the purification and collection unit is communicated with the grinding and extraction device through a second connecting pipe 3; the grinding and extraction device includes a base 4; a heating furnace 5 is provided on the top of the base 4; a plurality of heating chambers 6 are evenly distributed inside the heating furnace 5; the plurality of heating chambers 6 are arranged side by side; a grinding tank 7 is provided in each heating chamber 6; the top of the grinding tank 7 extends upward to the outside of the heating furnace 5 and is provided with a top cover 2; a grinding disc 8 is provided inside the grinding tank 7; a grinding rod 9 is provided on the top of the grinding disc 8; the top of the grinding rod 9 penetrates upward through the top cover 2; a driving device for controlling the grinding disc 8 to grind the mineral sample is provided on the base 4; a first connecting pipe 10 is provided on the outer side wall of the grinding tank 7; the other end of the first connecting pipe 10 is communicated with the second connecting pipe 3; the first connecting pipe 10 is located above the heating furnace 5; a first valve 11 is provided on the first connecting pipe 10; a connecting channel 12 is provided inside the tank body of the grinding tank 7; one end of the connecting channel 12 is communicated with the inside of the grinding tank 7; the other end of the connecting channel 12 is communicated with the first connecting pipe 10; the vacuum pumping device 1 is communicated with the purification and collection unit through a fourth connecting pipe 13, which is convenient for vacuum pumping the purification and collection unit and the grinding and extraction device.

[0035] By setting a plurality of grinding tanks in the above technical solution, multiple groups of mineral samples can be placed at the same time. At the same time, through the cooperation of the grinding disc, grinding rod, driving device, first connecting pipe, first valve, communication channel, heating furnace, vacuum pumping device and purification and collection unit, multiple grinding tanks can be independently ground, heated, and the inclusion water can be purified and collected, and the oxygen isotope of the collected samples can be measured by EA-IRMS, so as to realize the collection and analysis of the oxygen isotope in the water of multiple groups of mineral samples and improve the analysis efficiency.

[0036] In this embodiment, the driving device includes a first motor 15, a transmission assembly, and two translation mechanisms; the first motor 15 is arranged on the top of the base 4; the two translation mechanisms are symmetrically arranged on both sides of the heating furnace 5; the first motor 15 is drivingly connected to the two translation mechanisms through the transmission assembly; the output end of each translation mechanism is provided with a telescopic mechanism 44; a lifting plate 16 is arranged above the heating furnace 5; the lifting plate 16 is connected to the output end of the telescopic mechanism 44; a second motor 17 is arranged on the top of the lifting plate 16; the output end of the second motor 17 is provided with a driving head 18; the driving head 18 is located below the lifting plate 16; a driving groove 19 adapted to the driving head 18 is arranged at the top of the grinding rod 9; during use, the first motor 15 is started, the first motor 15 drives the two translation mechanisms to act simultaneously through the transmission assembly, the two translation mechanisms drive the telescopic mechanism to move horizontally, the telescopic mechanism drives the lifting plate 16 to move horizontally, the lifting plate drives the second motor 17 and the driving head 18 to move horizontally until the driving head 18 moves above the corresponding grinding tank 7, then the telescopic mechanism drives the lifting plate 16 to move downward so that the driving head 18 is inserted into the driving groove 19 at the top of the grinding rod 9, and then the second motor 17 drives the driving head 18 to rotate, the driving head 18 drives the grinding rod 9 to rotate, and the grinding rod 9 drives the grinding disc 8 to rotate, so as to grind the mineral sample in the grinding tube 7. After grinding is completed, the second motor 17 is turned off, the telescopic mechanism controls the driving head 18 to rise so that the driving head 18 disengages from the driving groove 19, and then the driving head 18 is controlled by the first motor to move above the next grinding tank 7, and the grinding of the mineral sample in the next grinding tank can be started.

[0037] In this embodiment, a connecting seat 45 is threadedly connected to the output end of the second motor; the top of the driving head 18 is threadedly connected to the bottom of the connecting seat 45.

[0038] In this embodiment, the cross section of the driving head 18 is square, which is convenient for driving the grinding rod 9 to rotate.

[0039] In this embodiment, a first magnet 20 is arranged at the bottom of the driving head 18; a second magnet 21 matched with the first magnet 20 is arranged at the inner bottom of the driving groove 19; when the driving head 18 is inserted into the driving groove 19, the first magnet 20 and the second magnet 21 are adsorbed together, which is convenient for the quick disassembly and assembly of the driving head 18 and the grinding rod 9.

[0040] In this embodiment, the translation mechanism includes two vertical plates 22, a lead screw 23, a moving slide 24, and two guide rods 25; the two vertical plates 22 are oppositely arranged on the top of the base 4; both ends of the lead screw 23 are rotatably connected to the two vertical plates 22; the moving slide 24 is threadedly connected to the lead screw 23 through a lead screw nut; the two guide rods 25 are symmetrically arranged on both sides of the lead screw 23; both ends of the guide rod 25 are fixedly connected to the two vertical plates 22; the guide rod 25 penetrates through the moving slide 24; the telescopic mechanism 44 is arranged on the top of the moving slide 24; the output end of the first motor 15 is connected to one lead screw 23, and the two lead screws 23 are connected through a transmission assembly; during use, the first motor 15 drives the two lead screws 23 to rotate simultaneously through the transmission assembly, the lead screw 23 drives the moving slide 24 to move horizontally, and the moving slide 25 drives the telescopic mechanism 44 to move horizontally.

[0041] In this embodiment, the transmission assembly includes a synchronous belt 26 and two synchronous belt pulleys 27; one synchronous belt pulley 27 is provided on each lead screw 23; the two synchronous belt pulleys 27 are connected through the synchronous belt 26.

[0042] In this embodiment, an electric heating tube 28 is arranged inside the heating chamber 6; the electric heating tube 28 is of a spiral structure and is sleeved outside the grinding tank 7, which is convenient for fully heating the grinding tank.

[0043] In this embodiment, the purification and collection unit includes a main pipeline 29, a first cold trap 30, a cold finger condenser 31, and a plurality of sample collection tubes 32; the first cold trap 30 is connected in series to the main pipeline 29; the number of sample collection tubes 32 is the same as that of the grinding tanks 7; the sample collection tubes 32 are communicated with the main pipeline 29 through third connecting pipes 33; the cold finger condenser 31 is connected in parallel to the main pipeline 29 between the vacuum pumping device 1 and the sample collection tubes 32 through a branch pipeline 34; the fourth connecting pipe 13 is communicated with the main pipeline 29; second valves 35, third valves 36, fourth valves 37, fifth valves 38, and sixth valves 39 are arranged on the main pipeline 29; the second valve 35 is located between the first cold trap 30 and the second connecting pipe 3; the third valve 36 is located between the first cold trap 30 and the sample collection tube 32; the fourth valve 37 is located between the sample collection tube 32 and the vacuum pumping device 1; the fourth valve 37 is a three-way valve; the two ports of the fourth valve 37 are respectively communicated with the main pipeline 29, and the remaining one port is communicated with one end of the branch pipeline 34; the fifth valve 38 is located between the cold finger condenser 31 and the vacuum pumping device 1; the sixth valve 39 is located between the vacuum pumping device 1 and the second connecting pipe 3; a seventh valve 40 is arranged on each third connecting pipe 33.

[0044] In this embodiment, a pressure gauge 41 and an eighth valve 42 are arranged on the branch pipeline 34; the pressure is detected through the pressure gauge 41, which is used to estimate the amount of gas-phase inclusions and monitor whether there is air leakage in the pipeline.

[0045] In this embodiment, a second cold trap 43 and a ninth valve 14 are provided on the fourth connecting pipe 13.

[0046] In this embodiment, vacuum gauges 46 are provided on both the main pipeline 29 and the fourth connecting pipe 13.

[0047] In this embodiment, the telescopic mechanism 44 is an electric telescopic rod.

[0048] The present invention also provides a method for analyzing oxygen isotopes in fluid inclusions in water. Using the above-mentioned device for analyzing oxygen isotopes in fluid inclusions in water, it includes the following steps:

[0049] S1: Open the top cover 2, sequentially place multiple groups of mineral samples into the corresponding grinding jars 7, and cover the top cover 2 to seal the grinding jars 7.

[0050] S2: Open all the first valves 11, use the vacuum pumping device 1 to evacuate the grinding and extraction device and the purification and collection unit, and after the evacuation is completed, close all the first valves 11.

[0051] S3: Put the first cold trap 30 on the liquid nitrogen pump, close the sixth valve 39 and the third valve 36, and the driving device controls the grinding disc 8 inside one of the grinding jars 7 to grind the mineral sample, releasing the gas-phase and liquid-phase products in the fluid inclusions. During this process, the first valve 11 corresponding to this grinding jar 7 is opened, and the remaining first valves 11 are closed.

[0052] S4: After the grinding is completed, use the heating furnace 5 to heat this grinding jar 7 to make the products in the fluid inclusions enter the purification and collection unit, and use the purification and collection unit to purify and collect the water in the fluid inclusions.

[0053] S5: Repeat the steps in S3 - S4 to sequentially complete the sample collection of the water in the fluid inclusions in the remaining grinding jars 7.

[0054] S6: Perform oxygen isotope determination on the collected samples through EA-IRMS.

[0055] In this embodiment, S4 specifically includes the following steps: 1) After grinding is completed, the grinding tank 7 is heated by the heating furnace 5, and the products released from the inclusions are frozen by liquid nitrogen and collected at the first cold trap 30; 2) Stop heating the grinding tank 7, close the second valve 35 and the first valve 11 corresponding to the grinding tank 7, open the third valve 36, use the vacuum pumping device to extract the impurity gases that are not condensed at the first cold trap 30 in the pipeline, close the through hole where the fourth valve 37 communicates with one end of the branch pipeline 34 and the fifth valve 38, remove the liquid nitrogen cup from the first cold trap 30 and put on the liquid nitrogen-alcohol coolant cup, put the liquid nitrogen cup on the cold finger condenser 31, the temperature of the liquid nitrogen-alcohol coolant during purification is -70 to -80 °C, the gases with boiling points greater than -70 °C are condensed at the first cold trap 30, the gases with boiling points between -70 °C and 198 °C are condensed in the cold finger condenser 31, CO 2 , CH 4 and other low-boiling-point gases cannot be frozen by the liquid nitrogen-alcohol coolant, are separated and then transferred and frozen at the cold finger condenser 31, and the inclusion water is frozen by the liquid nitrogen-alcohol coolant and continues to stay at the first cold trap 30, so as to realize the purification of the components frozen by liquid nitrogen at the first cold trap 30; 3) Then close the port where the fourth valve 37 communicates with the third valve 36, open the seventh valve 40 corresponding to one of the sample collection tubes 32, put the liquid nitrogen cup on the sample collection tube, remove the liquid nitrogen-alcohol coolant cup from the first cold trap 30 and use a heating device to heat the first cold trap 30, the inclusion water is transferred to the sample collection tube 32 after heating up, and after the collection is completed, close the corresponding seventh valve 40.

[0056] In this embodiment, a vacuum valve can be provided in the middle of the sample collection tube for sealing the collected water; the lower part of the sample collection tube can be a capillary tube, so that the inclusion water can be maximally presented, the sample injection volume can be reduced, and it is convenient for a micro-injection needle to take samples.

[0057] In this embodiment, the specific steps of S6 are as follows: Open the vacuum valve, let air into the sample collection tube 32, cut the lower capillary tube of the sample collection tube 32 with a grinding wheel, slowly insert the micro-injection needle into the inclusion water in the capillary tube, extract 0.1 microliter and immediately inject it into the EA high-temperature cracking tube, and measure the oxygen isotope composition through EA-IRMS online connection.

[0058] The above is only a preferred embodiment of the present invention, and does not impose any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A device for analyzing oxygen isotopes in inclusion water, characterized in that: include: A grinding extraction device, a purification and collection unit for purifying and collecting the extracted water, a vacuum device (1) and an EA-IRMS for oxygen isotope analysis of the extracted water; The purification collection unit is connected to the grinding and extraction device via a second connecting pipe (3); The grinding and extraction device comprises a base (4); a heating furnace (5) is provided on the top of the base (4); a plurality of heating chambers (6) are evenly distributed inside the heating furnace (5); a grinding pot (7) is provided inside the heating chamber (6); the top of the grinding pot (7) extends upward to the outside of the heating furnace (5) and is provided with a top cover (2); a grinding disc (8) is provided inside the grinding pot (7); a grinding rod (9) is provided on the top of the grinding disc (8); the top of the grinding rod (9) passes through the top cover (2) upward; a control device for controlling the grinding disc (8) to move the mineral sample to the grinding pot (7) is provided on the base (4); a driving device for grinding products; a first connecting pipe (10) is provided on the outer wall of the grinding tank (7); the other end of the first connecting pipe (10) is connected to the second connecting pipe (3); the first connecting pipe (10) is located above the heating furnace (5); a first valve (11) is provided on the first connecting pipe (10); a connecting channel (12) is provided inside the tank body of the grinding tank (7); one end of the connecting channel (12) is connected to the inside of the grinding tank (7); the other end of the connecting channel (12) is connected to the first connecting pipe (10); The vacuum extraction device (1) is connected to the purification collection unit via a fourth connecting pipe (13).

2. The oxygen isotope analysis device for inclusion water according to claim 1, characterized in that: The driving device comprises a first motor (15), a transmission assembly and two translation mechanisms; the two translation mechanisms are symmetrically arranged on both sides of the heating furnace (5); the first motor (15) is connected to the two translation mechanisms through the transmission assembly; the output end of each translation mechanism is provided with a telescopic mechanism (44); a lifting plate (16) is provided above the heating furnace (5); the lifting plate (16) is connected to the output end of the telescopic mechanism (44); a second motor (17) is provided on the top of the lifting plate (16); a driving head (18) is provided at the output end of the second motor (17); and a driving groove (19) adapted to the driving head (18) is provided on the top of the grinding rod (9).

3. The oxygen isotope analysis device for inclusion water according to claim 2, characterized in that: A first magnet (20) is provided at the bottom of the driving head (18); and a second magnet (21) matching with the first magnet (20) is provided at the inner bottom of the driving groove (19).

4. The oxygen isotope analysis device for inclusion water according to claim 2, characterized in that: The translation mechanism comprises two vertical plates (22), a screw rod (23), a movable slide (24) and two guide rods (25); the two vertical plates (22) are arranged oppositely on the top of the base (4); the two ends of the screw rod (23) are respectively rotatably connected to the two vertical plates (22); the movable slide (24) is arranged on the screw rod (23); the two guide rods (25) are symmetrically arranged on both sides of the screw rod (23); the two ends of the guide rod (25) are respectively fixedly connected to the two vertical plates (22); the guide rod (25) passes through the movable slide (24); the telescopic mechanism (44) is arranged on the top of the movable slide (24).

5. The oxygen isotope analysis device for inclusion water according to claim 4, characterized in that: The transmission assembly comprises a synchronous belt (26) and two synchronous pulleys (27); each of the screw rods (23) is provided with a synchronous pulley (27); the two synchronous pulleys (27) are connected via the synchronous belt (26); and the output end of the first motor (15) is connected to one of the screw rods (23).

6. The oxygen isotope analysis device for inclusion water according to claim 1, characterized in that: An electric heating tube (28) is arranged inside the heating chamber (6); the electric heating tube (28) is a spiral structure and is sleeved on the outside of the grinding tank (7).

7. The oxygen isotope analysis device for inclusion water according to claim 1, characterized in that: The purification collection unit comprises a main line (29), a first cold trap (30), a cold finger condenser (31) and a plurality of sample collecting tubes (32); the first cold trap (30) is connected in series to the main line (29); the number of the sample collecting tubes (32) is the same as that of the grinding jar (7); the sample collecting tubes (32) are all connected to the main line (29) through a third connecting pipe (33); the cold finger condenser (31) is connected in parallel to the main line (29) between the vacuum pumping device (1) and the sample collecting tubes (32) through a branch line (34); the fourth connecting pipe (13) is connected to the main line (29); a second valve (35), a third valve (36), a fourth valve (37), a fifth valve (38) and a sixth valve (39) are provided on the main line (29); the third connecting pipe (34) is connected to the fourth connecting pipe (13) and the fifth connecting pipe (38) is connected to the sixth connecting pipe (39); the third connecting pipe (34) is connected to the fifth connecting pipe (38) and the sixth connecting pipe (39) are connected to the fifth ... The second valve (35) is located between the first cold trap (30) and the second connecting pipe (3); the third valve (36) is located between the first cold trap (30) and the sample collecting pipe (32); the fourth valve (37) is located between the sample collecting pipe (32) and the vacuum pumping device (1); the fourth valve (37) is a three-way valve; the two ports of the fourth valve (37) are respectively connected to the main pipe (29), and the remaining port is connected to one end of the branch pipe (34); the fifth valve (38) is located between the cold finger condensing pipe (31) and the vacuum pumping device (1); the sixth valve (39) is located between the vacuum pumping device (1) and the second connecting pipe (3); and each of the third connecting pipes (33) is provided with a seventh valve (40).

8. The device for analyzing oxygen isotopes in inclusion water according to claim 7, characterized in that: The branch pipeline (34) is provided with a pressure gauge (41) and an eighth valve (42).

9. The device for analyzing oxygen isotopes in inclusion water according to claim 8, characterized in that: The fourth connecting pipe (13) is provided with a second cold trap (43) and a ninth valve (14).

10. A method for analyzing oxygen isotopes in inclusion water, characterized in that: The device for analyzing oxygen isotopes in inclusion water as claimed in any one of claims 1 to 9 comprises the following steps: S1: Place the mineral samples into the grinding jar (7) in sequence; S2: opening all first valves (11), using the vacuum pumping device (1) to vacuum the grinding and extraction device and the purification and collection unit, and after the vacuum pumping is completed, closing all first valves (11); S3: The driving device controls the grinding disc (8) inside one of the grinding jars (7) to grind the mineral sample to release gaseous and liquid products in the inclusions. During this process, the first valve (11) corresponding to the grinding jar (7) is opened, and the other first valves (11) are closed; S4: After the grinding is completed, the grinding tank (7) is heated by the heating furnace (5), so that the product in the inclusions enters the purification collection unit, and the water in the inclusions is purified and collected by the purification collection unit; S5: repeat the steps in S3-S4 to collect samples of water in the inclusions in the remaining grinding jars (7) in sequence; S6: Oxygen isotope determination of the collected samples by EA-IRMS.

Images