Sample processing device for inductively coupled plasma mass spectrometer

Abstract

The utility model discloses a sample processing device for an inductively coupled plasma mass spectrometer, and belongs to the technical field of plasma mass spectrometers. Comprising a supporting frame, a grinding box is fixedly arranged on the supporting frame, a sliding cavity is formed in the grinding box, a grinding groove is formed in the sliding cavity, a plurality of filtering holes are formed in the grinding groove, an electric push rod is fixedly arranged on the supporting frame, and the output end of the electric push rod is in power connection with a push rod; a first motor is fixedly arranged on the mounting plate, a first rotating shaft is arranged at the output end of the first motor in a power mode, a sealing plate is fixedly arranged at one end of the first rotating shaft, a grinding rod is fixedly arranged on the sealing plate, a grinding head is rotationally arranged on the grinding rod, and the grinding head can abut against the grinding groove. In the grinding process, the sliding cavity is sealed through the sealing plate, fine sample particles generated during grinding can be effectively prevented from being blown away into air, the integrity of samples is ensured, and the utilization rate of the samples is increased.

Description

Technical Field

[0001] This utility model relates to a sample processing device for an inductively coupled plasma mass spectrometer, belonging to the technical field of plasma mass spectrometry. Background Technology

[0002] Inductively coupled plasma mass spectrometry (ICP-MS) is an instrument for determining trace elements and isotope ratios. It is widely used to determine trace amounts in rocks, ores, minerals, and groundwater. Pre-treatment of the sample is necessary, requiring a sample pretreatment device to decompose the sample into a solution suitable for analysis. Existing ICP-MS sample pretreatment devices require grinding the sample before liquid decomposition. However, because the sample is exposed to air during grinding, some fine sample particles may be blown into the air, resulting in sample loss. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a sample processing device for an inductively coupled plasma mass spectrometer. It solves the problem that in the prior art, when using the sample pretreatment device for an ion mass spectrometer, the sample needs to be ground first and then liquid decomposed. However, since the sample is exposed to air during the grinding process, some fine sample particles may be blown into the air, causing sample loss.

[0004] The technical problem to be solved by this utility model is achieved by the following technical solution: A sample processing device for an inductively coupled plasma mass spectrometer includes a support frame, a grinding box fixedly mounted on the support frame, a sliding cavity with a grinding groove inside the sliding cavity, a plurality of filter holes on the grinding groove, an electric push rod fixedly mounted on the support frame, a push rod connected to the output end of the electric push rod, a mounting plate fixedly mounted on one end of the push rod, a first motor fixedly mounted on the mounting plate, a first rotating shaft with a power source at the output end of the first motor, a sealing plate fixedly mounted on one end of the first rotating shaft, the sealing plate being used to seal the sliding cavity, a grinding rod fixedly mounted on the sealing plate, a grinding head rotatably mounted on the grinding rod, the grinding head being able to abut against the grinding groove, and a drive structure for driving the grinding head to move on the sealing plate.

[0005] By adopting the above technical solution, the material to be ground is first placed in the grinding tank. The electric push rod is activated to move the push rod, which then moves the mounting plate. The mounting plate then moves the first motor, which in turn moves the first rotating shaft. The first rotating shaft moves the sealing plate towards the sliding cavity, which in turn moves the grinding rod. The grinding rod then moves the grinding head into the grinding tank. The first motor is activated to rotate the first rotating shaft, which in turn rotates the sealing plate. The sealing plate then rotates the grinding rod, which in turn moves the grinding head to slide within the grinding tank. Finally, the drive mechanism is activated to rotate the grinding head, thus grinding the material. The ground material is then discharged from the grinding chamber through a filter. During the grinding process, the sliding cavity is sealed by the sealing plate, effectively preventing fine sample particles generated during grinding from being blown into the air, ensuring sample integrity, and improving sample utilization.

[0006] The present invention is further configured such that: a mounting box is fixedly mounted on the mounting plate, a drive shaft is provided inside the mounting box, the drive shaft and the first rotating shaft are connected by a bevel gear set, a connecting rod is fixedly mounted on the end of the drive shaft away from the bevel gear set, and a vibrator is fixedly mounted on the connecting rod, the vibrator being able to abut against the sealing plate.

[0007] By adopting the above technical solution, when the first motor drives the first rotating shaft to rotate, the first rotating shaft drives the transmission shaft to rotate through the bevel gear set, and then the transmission shaft drives the connecting rod to rotate. Then the connecting rod drives the vibrator to strike the sealing plate. By the vibrator striking and vibrating the sealing plate, the material adhering to the sealing plate is loosened and falls back into the grinding tank, ensuring that the material can be fully ground and improving the uniformity and integrity of the sample processing.

[0008] The present invention is further provided with a protective cover fixedly installed on the mounting box, the protective cover being used to protect the vibrator head.

[0009] By adopting the above technical solution, the protective cover protects the vibrator head, preventing collisions between workers and the vibrator head during the grinding process and improving the safety of the device.

[0010] The present invention is further configured such that: the driving structure includes a second motor fixedly mounted on the sealing plate on the side away from the grinding rod, the output end of the second motor is poweredly connected to a second rotating shaft, a guide channel is provided through the grinding rod, the guide channel also passes through the sealing plate, the grinding head is located at the end of the guide channel away from the sealing plate, and the second rotating shaft extends into the guide channel and is fixedly connected to the grinding head.

[0011] By adopting the above technical solution, the second motor is started to drive the second rotating shaft to rotate, and then the second rotating shaft drives the grinding head to rotate.

[0012] The present invention is further configured such that: a scraper is fixedly provided on the sealing plate, and the scraper and the inner wall of the sliding cavity are in sliding contact.

[0013] By adopting the above technical solution, when the sealing plate rotates, the scraper also rotates synchronously with the sealing plate, thereby scraping off the material on the inner wall of the sliding cavity. This prevents material residue on the inner wall of the sliding cavity from affecting the next sample processing, and improves the ease of use and maintenance efficiency of the equipment.

[0014] The present invention is further configured such that: a guide cylinder communicating with the filter hole is fixedly installed on the support frame, a collection box communicating with the guide cylinder is fixedly installed on the support frame, and a collection box is slidably installed inside the collection box.

[0015] By adopting the above technical solution, the ground material is conveyed through the filter holes to the feed cylinder, and then the ground material is conveyed through the feed cylinder to the collection box for centralized collection and processing.

[0016] The beneficial effects of this invention are as follows: When the device is working, the material to be ground is first placed in the grinding tank. Then, the electric push rod is activated to move the push rod, which in turn moves the mounting plate. The mounting plate then moves the first motor, which in turn moves the first rotating shaft. The first rotating shaft then moves the sealing plate towards the sliding cavity, which in turn moves the grinding rod. The grinding rod then moves the grinding head into the grinding tank. At this point, the first motor is activated to rotate the first rotating shaft, which in turn rotates the sealing plate. The sealing plate then rotates the grinding rod, which in turn moves the grinding head. The grinding rod then moves the grinding head into the grinding tank. The friction between the grinding tank and the grinding head causes the grinding head to rotate during the sliding process, thus grinding the material. The ground material is then discharged from the outside of the grinding chamber through the filter holes. During the grinding process, the sliding cavity is sealed by the sealing plate, which effectively prevents small sample particles generated during grinding from being blown into the air, ensuring the integrity of the sample and improving sample utilization. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional schematic diagram of the grinding head in this utility model;

[0019] Figure 3 This is a three-dimensional schematic diagram of the support frame in this utility model.

[0020] In the diagram: 1. Support frame; 2. Grinding box; 3. Grinding groove; 4. Filter hole; 5. Electric push rod; 6. Mounting plate; 7. First motor; 8. Sealing plate; 9. Grinding rod; 10. Grinding head; 201. Sliding cavity; 501. Push rod; 701. First rotating shaft; 1011. Mounting box; 1012. Drive shaft; 1013. Connecting rod; 1014. Vibrator head; 1021. Protective cover; 1031. Scraper; 1041. Guide cylinder; 1042. Concentrating box; 1043. Collection box; 1051. Second motor; 1052. Second rotating shaft; 1053. Guide channel. Detailed Implementation

[0021] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this utility model, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0022] like Figures 1 to 3 As shown, a sample processing device for an inductively coupled plasma mass spectrometer includes a support frame 1, on which a grinding box 2 is fixedly mounted. The grinding box 2 has a sliding cavity 201 with a one-way opening. A grinding groove 3 is provided inside the sliding cavity 201, and several filter holes 4 are provided on the grinding groove 3. The filter holes 4 are used to filter the ground material sample, and the material that cannot be ground remains above the filter holes 4. Two electric push rods 5 are fixedly mounted on the support frame 1. The grinding box 2 is located between the two electric push rods 5. The output end of the electric push rod 5 is poweredly connected to a push rod 501. A mounting plate 6 is fixedly mounted on one end of the push rod 501. A first motor 7 is fixedly mounted on the side of the mounting plate 6 away from the grinding box 2. The first motor 7 and the electric push rod 5 are connected to an external power source, which provides power to the first motor 7 and the electric push rod 5. The output end of the first motor 7 is equipped with a first rotating shaft 701. One end of the first rotating shaft 701 extends toward the support frame 1. A sealing plate 8 is fixedly installed at one end of the first rotating shaft 701. The sealing plate 8 is used to seal the opening of the sliding cavity 201. At least two grinding rods 9 are fixedly installed on the sealing plate 8. A grinding head 10 is rotatably installed on the grinding rod 9. The grinding head 10 can abut against the grinding groove 3. The grinding head 10 reciprocates along the inner wall of the grinding groove 3 to grind the material. The outer surface of the grinding rod 9 and the sliding cavity 201 are slidably connected. The sealing plate 8 is provided with a drive structure to drive the grinding head 10 to move.

[0023] like Figure 1As shown, a mounting box 1011 is fixedly mounted on the mounting plate 6. Inside the mounting box 1011, a transmission shaft 1012 is arranged along the radial side of the first rotating shaft 701. The transmission shaft 1012 and the first rotating shaft 701 are connected by a bevel gear set. A first gear is fixedly mounted on the first rotating shaft 701, and a second gear is fixedly mounted on one end of the transmission shaft 1012. The first gear and the second gear mesh to form a bevel gear set. A connecting rod 1013 is fixedly mounted on the end of the transmission shaft 1012 away from the bevel gear set. Three connecting rods 1013 are provided to ensure the connectivity of the device during operation. There is a gap between the end of the connecting rod 1013 and the sealing plate 8 throughout the entire movement. A vibrator head 1014 is fixedly mounted on the connecting rod 1013. The vibrator head 1014 is elastic and can abut against the sealing plate 8.

[0024] When the connecting rod 1013 rotates, the vibrator head 1014 rotates synchronously. When the vibrator head 1014 moves towards the sealing plate 8 and comes into contact with the sealing plate 8, it strikes the sealing plate 8 and generates vibration. As the connecting rod 1013 rotates, the vibrator head 1014 gradually deforms to fill the gap between the connecting rod 1013 and the sealing plate 8. Then, the vibrator head 1014 follows the connecting rod 1013 and moves away from the sealing plate 8, thus completing the entire striking process.

[0025] like Figure 1 As shown, a protective cover 1021 is fixedly installed on the mounting box 1011. An opening is provided on the side of the protective cover 1021 facing the grinding box 2. The protective cover 1021 is used to protect the vibrator head 1014.

[0026] like Figure 2 As shown, the drive structure includes a second motor 1051 fixedly mounted on the sealing plate 8 on the side away from the grinding rod 9. The output end of the second motor 1051 is poweredly connected to a second rotating shaft 1052. A guide channel 1053 is provided through the grinding rod 9. The guide channel 1053 also passes through the sealing plate 8. The grinding head 10 is located at the end of the guide channel 1053 away from the sealing plate 8. The second rotating shaft 1052 extends into the guide channel 1053 and is fixedly connected to the grinding head 10.

[0027] like Figure 2 As shown, a scraper 1031 is fixedly installed on the side of the sealing plate 8 away from the second motor 1051. There are two scrapers 1031. The scrapers 1031 are attached to the inner wall of the sliding cavity 201 and slide.

[0028] like Figure 3As shown, a guide cylinder 1041 communicating with the filter hole 4 is fixedly installed on the support frame 1, and a collection box 1042 communicating with the guide cylinder 1041 is fixedly installed on the support frame 1. A collection box 1043 is slidably installed inside the collection box 1042, and the ground material sample is collected and processed through the collection box 1043.

[0029] First, the material to be ground is placed in the grinding tank 3. The electric push rod 5 is activated to move the push rod 501. The push rod 501 then moves the mounting plate 6, which in turn moves the first motor 7. The first motor 7 then moves the first rotating shaft 701, which in turn moves the sealing plate 8 towards the sliding cavity 201. The sealing plate 8 then moves the grinding rod 9, which in turn moves the grinding head 10 into the grinding tank 3. At this point, the first motor 7 is activated to rotate the first rotating shaft 701, which in turn rotates the sealing plate 8. The sealing plate 8 then rotates the grinding rod 9, which in turn moves the grinding head 10 to slide within the grinding tank 3. Finally, the drive mechanism is activated to rotate the grinding head 10, thus grinding the material. The ground material is discharged from the outside of the grinding chamber 2 through the filter hole 4. During the grinding process, the sealing plate 8 seals the sliding cavity 201, effectively preventing fine sample particles generated during grinding from being blown into the air, ensuring sample integrity and improving sample utilization.

[0030] When the first motor 7 drives the first rotating shaft 701 to rotate, the first rotating shaft 701 drives the transmission shaft 1012 to rotate through the bevel gear set. Then, the transmission shaft 1012 drives the connecting rod 1013 to rotate. Then, the connecting rod 1013 drives the vibrator head 1014 to strike the sealing plate 8. The vibrator head 1014 strikes and vibrates the sealing plate 8, causing the material adhering to the sealing plate 8 to loosen and fall back into the grinding tank 3, ensuring that the material can be fully ground and improving the uniformity and integrity of the sample processing.

[0031] The protective cover 1021 protects the vibrator head 1014 to prevent collisions between workers and the vibrator head 1014 during the grinding process, thereby improving the safety of the device.

[0032] The second motor 1051 is started to drive the second rotating shaft 1052 to rotate, and then the second rotating shaft 1052 drives the grinding head 10 to rotate.

[0033] When the sealing plate 8 rotates, the scraper 1031 also rotates synchronously with the sealing plate 8, thereby scraping off the material on the inner wall of the sliding cavity 201. This prevents material residue on the inner wall of the sliding cavity 201 from affecting the next sample processing, thus improving the ease of use and maintenance efficiency of the equipment.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sample processing device for an inductively coupled plasma mass spectrometer, characterized in that: The system includes a support frame (1), on which a grinding box (2) is fixedly mounted. The grinding box (2) has a sliding cavity (201), and a grinding groove (3) is provided inside the sliding cavity (201). The grinding groove (3) has several filter holes (4). An electric push rod (5) is fixedly mounted on the support frame (1). The output end of the electric push rod (5) is powered and connected to a push rod (501). One end of the push rod (501) is fixedly mounted with a mounting plate (6). The mounting plate (6) is fixedly equipped with... There is a first motor (7), and the output end of the first motor (7) is equipped with a first rotating shaft (701). A sealing plate (8) is fixedly installed at one end of the first rotating shaft (701). The sealing plate (8) is used to seal the sliding cavity (201). A grinding rod (9) is fixedly installed on the sealing plate (8). A grinding head (10) is rotatably installed on the grinding rod (9). The grinding head (10) can abut against the grinding groove (3). A driving structure for driving the grinding head (10) to move is provided on the sealing plate (8).

2. The sample processing device for an inductively coupled plasma mass spectrometer according to claim 1, characterized in that: An installation box (1011) is fixedly installed on the installation plate (6). A drive shaft (1012) is installed inside the installation box (1011). The drive shaft (1012) and the first rotating shaft (701) are connected by a bevel gear set. A connecting rod (1013) is fixedly installed at one end of the drive shaft (1012) away from the bevel gear set. A vibrator head (1014) is fixedly installed on the connecting rod (1013). The vibrator head (1014) can abut against the sealing plate (8).

3. The sample processing device for an inductively coupled plasma mass spectrometer according to claim 2, characterized in that: A protective cover (1021) is fixedly installed on the mounting box (1011), and the protective cover (1021) is used to protect the vibrator head (1014).

4. The sample processing device for an inductively coupled plasma mass spectrometer according to claim 1, characterized in that: The drive structure includes a second motor (1051) fixedly mounted on the sealing plate (8) on the side away from the grinding rod (9). The output end of the second motor (1051) is poweredly connected to a second rotating shaft (1052). A guide channel (1053) is provided through the grinding rod (9). The guide channel (1053) also passes through the sealing plate (8). The grinding head (10) is located at the end of the guide channel (1053) away from the sealing plate (8). The second rotating shaft (1052) extends into the guide channel (1053) and is fixedly connected to the grinding head (10).

5. The sample processing device for an inductively coupled plasma mass spectrometer according to claim 1, characterized in that: A scraper (1031) is fixedly provided on the sealing plate (8), and the scraper (1031) and the inner wall of the sliding cavity (201) slide against each other.

6. The sample processing device for an inductively coupled plasma mass spectrometer according to claim 1, characterized in that: A guide cylinder (1041) communicating with the filter hole (4) is fixedly installed on the support frame (1), and a collection box (1042) communicating with the guide cylinder (1041) is fixedly installed on the support frame (1), and a collection box (1043) is slidably installed inside the collection box (1042).

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