Rock ore powder anti-splashing sampling device for acid dissolution test

Abstract

The invention discloses a rock and ore powder anti-splashing sampling device for acid dissolution test, which comprises a temporary storage cylinder for temporarily storing rock and ore powder needing to be added into an acid solvent, a piston at the top end of the temporary storage cylinder is connected with a piston rod, and a taper pipe for sucking and discharging the powder is arranged at the bottom end of the temporary storage cylinder in a penetrating manner; a sampling piece for sucking powder or a sample introduction piece for discharging the powder into an acid solvent in the digestion container is clamped on the outer side of the taper pipe, a protection piece for preventing acid liquor from splashing is arranged on the sample introduction piece, and a supporting piece is arranged on the protection piece; through the sealed sampling and sample introduction structural design of the temporary storage cylinder, the sampling piece and the sample introduction piece, the problem of flying of rock ore powder in the sampling and sample introduction stages is completely eradicated, meanwhile, the immersed feeding and flushing process ensures that no sample residue exists, the sample quantification precision is greatly improved, the detection data deviation caused by sample loss is avoided, and the detection accuracy is improved. And an accurate and reliable basis for the to-be-detected liquid is provided for rock and ore component analysis.

Description

Technical Field

[0001] This invention relates to the technical field of acid soluble testing equipment for rock and mineral powders, specifically to an anti-splashing sample feeding device for acid soluble testing of rock and mineral powders. Background Technology

[0002] Acid dissolution testing of rock and mineral powders is a core pretreatment technique for the chemical composition analysis of rocks and minerals. It refers to the process of using single or mixed acids such as hydrochloric acid, nitric acid, and hydrofluoric acid as solvents, based on the differences in the mineral composition of rocks and minerals, to dissolve the target components in the rock and mineral powder sample under specific temperature and pressure conditions. This process causes the elements to be measured to detach from the solid mineral lattice and transfer into the solution. This technique is applicable to most types of rocks and minerals, such as silicates, carbonates, and oxides, and can provide a basis for subsequent instrumental analysis such as atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry.

[0003] In existing acid dissolution tests for rock and mineral powders, the addition of rock and mineral powder and acid reagents to the digestion container, as well as the subsequent vigorous reaction stage of heating and digestion, can easily lead to sample powder flying and acid splashing. This not only causes sample loss and directly leads to deviations in the quantitative results of the elements to be measured, but also poses serious safety hazards to operators due to the splashing of highly corrosive acid. At the same time, the splashed acid reagents cause unnecessary losses, and the adhering powder and acid can contaminate the experimental equipment, increasing cleaning and maintenance costs, ultimately significantly reducing the efficiency of experimental operations and the reliability of test data. Summary of the Invention

[0004] The purpose of this invention is to address the problem that in existing acid dissolution tests of rock and mineral powders, sample powder tends to fly and acid splashes during the manual addition of rock and mineral powder and acid reagents to the digestion container, as well as during the subsequent vigorous reaction stage of heating and digestion. This not only causes sample loss and directly leads to deviations in the quantitative results of the analytes, but also poses serious safety hazards to operators due to the splashing of highly corrosive acid. At the same time, the splashed acid reagents cause unnecessary losses, and the adhering powder and acid can contaminate experimental equipment, increasing cleaning and maintenance costs. Ultimately, this significantly reduces the efficiency of experimental operations and the reliability of test data. The invention provides a rock and mineral powder anti-splash injection device for acid dissolution tests.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rock and mineral powder anti-splash injection device for acid dissolution testing, comprising: a temporary storage cylinder for temporarily storing rock and mineral powder that needs to be added to an acid solvent, a piston rod connected to the top of the temporary storage cylinder, a conical tube for sucking in and discharging the powder through the bottom of the temporary storage cylinder, a sampling component for sucking in the powder or an injection component for discharging the powder into the acid solvent in a digestion container being snapped onto the outside of the conical tube, a protective component for preventing acid splashing being provided on the injection component, and a support component being provided on the protective component;

[0006] The sample injection device includes a second connecting tube that engages with the tapered tube at the bottom of the temporary storage cylinder. The bottom end of the second connecting tube is connected to an injection tube. When it is necessary to discharge the powder in the temporary storage cylinder into the acid solvent in the digestion container, the end of the injection tube is first inserted into the acid solvent in the digestion container and brought close to the bottom of the digestion container to form a closed feeding channel. Then, the piston rod in the temporary storage cylinder is pushed down to allow the powder to slowly slide into the bottom of the digestion container along the injection tube.

[0007] The protective component includes a baffle covering the top opening of the digestion container, a rotating plate being provided on the baffle, and the injection tube passing through the rotating plate.

[0008] As a further embodiment of the present invention: the inner side of the baffle is provided with an installation groove, the installation groove is circular, the inner side of the installation groove is provided with a connecting groove, the connecting groove is annular, and each of the outer circular surfaces of the baffle is fixedly connected with a fixing ear, the fixing ears are provided in four sets, symmetrically distributed on the outer circular surface of the baffle, and each set of fixing ears is provided with a U-shaped fixing groove.

[0009] As a further embodiment of the present invention: the rotating plate is disposed in the mounting groove and has the same size as the mounting groove; a rotating ring is fixedly connected to the outer circular surface of the rotating plate; the rotating ring is rotatably inserted into the connecting groove; a rotating bead is embedded in the rotating plate and is rotatably connected to the rotating plate; the diameter of the rotating bead is greater than the thickness of the rotating plate, so that the upper and lower ends of the rotating bead penetrate the rotating plate.

[0010] As a further embodiment of the present invention: the outer circular surface of the injection tube is provided with a threaded groove, the bottom end of the injection tube is hemispherical, and a through hole is provided on the rotating bead.

[0011] As a further embodiment of the present invention: the injection tube passes through the through hole, and the injection tube is threadedly connected to the rotating bead through a threaded groove. The length of the threaded groove is the same as the length of the through hole. When the powder is discharged into the digestion container, it can push the temporary storage cylinder. Its axial thrust is transmitted to the rotating plate through the connecting tube and the injection tube, causing the rotating plate to rotate around the center of the mounting groove. During this process, the rotating ring on the outer surface of the rotating plate and the connecting groove maintain a rotating insertion fit to ensure rotational stability. At the same time, because the injection tube is threadedly connected to the rotating bead through the threaded groove, and the rotating bead is rotatably connected to the rotating plate, the injection tube can rotate synchronously around the center of the rotating bead, forming a double stirring motion of revolution and rotation.

[0012] As a further embodiment of the present invention: the support member includes an I-shaped connecting column that is inserted into the fixing slot, and the connecting column is tightly fitted with the fixing ear. A stud is fixedly connected to the bottom end of the connecting column, and an adjusting cylinder is threadedly connected to the outer circular surface of the stud. A counterweight is fixedly connected to the bottom end of the adjusting cylinder. The support member is provided in four sets, and each set of fixing ears is provided with a set of support members.

[0013] As a further embodiment of the present invention: the sampling component includes a connecting pipe that engages with the tapered tube at the bottom of the temporary storage cylinder, and a sampling cover is connected through the bottom of the connecting pipe. The sampling cover has an inverted U-shaped cross section and a rounded transition surface at the top.

[0014] As a further embodiment of the present invention: a sealing ring is fixedly connected to the outside of the sampling cover, and the bottom end of the sealing ring is flush with the bottom end of the sampling cover.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The present invention uses a sealed sampling and injection structure design with a temporary storage cylinder, sampling component and injection component to eliminate the problem of rock and mineral powder flying during the sampling and injection stages. At the same time, the immersion feeding and rinsing process ensures that there is no sample residue, which greatly improves the quantitative accuracy of the sample and avoids the deviation of the detection data caused by sample loss, providing an accurate and reliable test liquid basis for rock and mineral composition analysis.

[0017] 2. In this invention, the full-coverage design of the protective baffle and the stable support structure of the support effectively block acid splashing and acid mist dispersion during the acid dissolution process, reducing the safety hazards of highly corrosive acid reagents to operators, while avoiding acid corrosion and pollution of experimental equipment, reducing equipment maintenance costs, and improving the safety and environmental friendliness of experimental operations.

[0018] 3. The invention employs a dual agitation design involving the revolution and rotation of the injection tube to rapidly and uniformly mix the rock powder and acid solvent, preventing localized clumping and improving the efficiency and completeness of acid dissolution. Simultaneously, the hemispherical bottom design protects the inner wall of the digestion container from scratches, extending its lifespan and reducing experimental consumable costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the sampling state in this invention;

[0020] Figure 2 This is a schematic diagram of the sample introduction state in this invention;

[0021] Figure 3 This is a schematic diagram of the sampling component in this invention;

[0022] Figure 4 This is a schematic diagram of the sample inlet in this invention;

[0023] Figure 5 In this invention Figure 4 A schematic diagram of the structure at point A;

[0024] Figure 6 This is a schematic diagram of the baffle structure in this invention;

[0025] Figure 7 This is a schematic diagram of the rotating plate in this invention;

[0026] Figure 8 In this invention Figure 7 A schematic diagram of the structure at point B;

[0027] Figure 9 This is a schematic diagram of the support structure in this invention.

[0028] In the diagram: 1. Temporary storage cylinder; 2. Piston rod; 3. Sampling component; 31. Connecting pipe one; 32. Sampling cover; 33. Sealing ring; 4. Injection component; 41. Connecting pipe two; 42. Injection pipe; 43. Threaded groove; 5. Protective component; 51. Baffle; 511. Mounting groove; 512. Connecting groove; 513. Fixing lug; 514. Fixing groove; 52. Rotating plate; 521. Rotating ring; 522. Rotating ball; 6. Support component; 61. Connecting column; 62. Stud; 63. Adjusting cylinder; 64. Counterweight seat. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0031] Reference Figures 1 to 2In this embodiment of the invention, a rock and mineral powder anti-splashing injection device for acid dissolution testing includes: a temporary storage cylinder 1 for temporarily storing rock and mineral powder that needs to be added to an acid solvent; a piston rod 2 is connected to the top of the temporary storage cylinder 1; a conical tube is provided through the bottom of the temporary storage cylinder 1 for sucking in and discharging the powder; a sampling component 3 for sucking in the powder or an injection component 4 for discharging the powder into the acid solvent in the digestion container is snapped onto the outside of the conical tube; a protective component 5 is provided on the injection component 4 to prevent acid splashing; and a support component 6 is provided on the protective component 5.

[0032] Reference Figure 3 The sampling component 3 includes a connecting pipe 31 that engages with the tapered tube at the bottom of the temporary storage cylinder 1. A sampling hood 32 is connected through the bottom of the connecting pipe 31. The sampling hood 32 has an inverted U-shaped cross-section and a rounded transition surface at the top. A sealing ring 33 is fixedly connected to the outside of the sampling hood 32, and the bottom end of the sealing ring 33 is flush with the bottom end of the sampling hood 32. In use, the powder to be added to the acid solvent is placed on a flat container, and the sampling hood 32 is placed over the powder so that the powder is inside the sampling hood 32. The bottom end of the sealing ring 33 is flush with the flat container. The powder placement surface of the container is brought into contact with the sampler. Then, the bottom conical tube of the temporary storage cylinder 1 is inserted from the top of the connecting pipe 31, and the piston rod 2 inside the temporary storage cylinder 1 is pulled upward to generate a stable negative pressure field. This negative pressure field is quickly transmitted to the inside of the sampling hood 32 through the connecting pipe 31, so that the rock and mineral powder inside the hood is smoothly sucked into the inner cavity of the temporary storage cylinder 1 along the channel guided by the arc transition surface under the action of atmospheric pressure difference. The tight fit between the sealing ring 33 and the container placement surface can effectively prevent external air from entering and disrupting the negative pressure environment, and prevent the powder from flying away and being lost during the sampling process.

[0033] The above scheme is adopted: through the coordinated operation of temporary storage cylinder 1, piston rod 2, connecting pipe 31, sampling cover 32 and sealing ring 33, a sealed negative pressure sampling environment is constructed to achieve quantitative and accurate extraction of rock and mineral powder, completely eliminate the problem of powder flying during the sampling stage, ensure no sample loss, and lay the foundation for the accuracy of subsequent test data.

[0034] Reference Figures 4 to 5The injection unit 4 includes a connecting tube 41 that engages with the tapered tube at the bottom of the temporary storage cylinder 1. An injection tube 42 is connected to the bottom of the connecting tube 41. When it is necessary to discharge the powder from the temporary storage cylinder 1 into the acid solvent in the digestion container, the end of the injection tube 42 is first inserted into the acid solvent in the digestion container, and the end of the injection tube 42 is brought close to the bottom of the digestion container to form a closed feeding channel. Then, the piston rod 2 inside the temporary storage cylinder 1 is pushed downwards, causing the powder to slowly slide into the bottom of the digestion container along the injection tube 42. The submersion feeding of the injection tube 42 allows the powder to directly enter the acid solvent, preventing... To address the dust issue caused by powder contact with air, after the process is complete, the piston rod 2 can be pulled out of the temporary storage cylinder 1, and a small amount of deionized water can be injected into the temporary storage cylinder 1. Then, the piston rod 2 can be inserted into the temporary storage cylinder 1 and pushed to thoroughly rinse the powder remaining on the inner wall of the connecting tube 41 and the injection tube 42 into the digestion container. This ensures that the sample is free of residue and the quantification is accurate, avoiding deviations in detection data due to sample loss. During this process, the injection tube 42 is kept immersed in the acid solvent at its end. The outer surface of the injection tube 42 is provided with a threaded groove 43, and the bottom of the injection tube 42 is hemispherical.

[0035] The above scheme is adopted: by using the submerged feeding structure design of temporary storage cylinder 1, piston rod 2, connecting tube 2 41 and injection tube 42, the powder is conveyed in a closed and uniform manner, eliminating dust during the sample injection stage. At the same time, the deionized water rinsing process ensures that there is no sample residue on the inner wall of connecting tube 2 41 and injection tube 42, further improving the sample quantification accuracy.

[0036] Reference Figures 6 to 8The protective component 5 includes a baffle 51 covering the top opening of the digestion container. A rotating plate 52 is provided on the baffle 51, and the injection pipe 42 passes through the rotating plate 52. An installation groove 511 is provided through the inner side of the baffle 51. The installation groove 511 is circular, and a connecting groove 512 is provided inside the installation groove 511. The connecting groove 512 is annular. A fixing ear 513 is fixedly connected to each of the outer circular surfaces of the baffle 51. There are four sets of fixing ears 513, symmetrically distributed on the outer circular surface of the baffle 51. A set of U-shaped fixing grooves 51 is provided through the fixing ear 513. 4. A rotating plate 52 is disposed within a mounting groove 511 and has the same dimensions as the mounting groove 511. A rotating ring 521 is fixedly connected to the outer surface of the rotating plate 52. The rotating ring 521 is rotatably inserted into the connecting groove 512. A rotating bead 522 is embedded in the rotating plate 52 and is rotatably connected to the rotating plate 52. The diameter of the rotating bead 522 is larger than the thickness of the rotating plate 52, so that the upper and lower ends of the rotating bead 522 penetrate the rotating plate 52. A through hole is formed in the rotating bead 522, and the injection tube 42 passes through the through hole and is threaded through a groove. 43 is threadedly connected to the rotating bead 522. The length of the threaded groove 43 is the same as the length of the through hole. When the powder is discharged into the digestion container, it can push the temporary storage cylinder 1. Its axial thrust is transmitted to the rotating plate 52 through the connecting pipe 41 and the injection pipe 42, causing the rotating plate 52 to rotate around the center of the mounting groove 511. During this process, the rotating ring 521 on the outer surface of the rotating plate 52 maintains a rotating insertion fit with the connecting groove 512 to ensure rotational stability. At the same time, because the injection pipe 42 is threadedly connected to the rotating bead 522 through the threaded groove 43, and the rotating bead 522... 22 is rotatably connected to the rotating plate 52, and the injection tube 42 can rotate synchronously around the center of the rotating bead 522, forming a double stirring motion of revolution and rotation. This compound rotation method can greatly expand the stirring range, drive the acid solvent in the digestion container to form a vortex, so that the rock and mineral powder and the acid solvent are quickly and evenly mixed, avoiding local powder agglomeration. In addition, the bottom of the injection tube 42 is designed as a hemispherical shape, which can effectively prevent scraping the inner wall of the digestion container during stirring, protect the container from damage, and further ensure the sufficiency of subsequent acid dissolution and the accuracy of test data.

[0037] The above solution is adopted: through the linkage design of baffle 51, rotating plate 52, rotating ring 521, rotating bead 522 and threaded groove 43 of injection tube 42, the injection tube 42 can achieve dual stirring motion of revolution and rotation. The powder and acid solvent can be uniformly mixed without additional stirring equipment. At the same time, the hemispherical bottom design avoids scraping the digestion container and extends the service life of the container.

[0038] Reference Figure 9The support member 6 includes an I-shaped connecting post 61 that is inserted into the fixing groove 514, and the connecting post 61 is tightly fitted with the fixing ear 513. A stud 62 is fixedly connected to the bottom end of the connecting post 61, and an adjusting cylinder 63 is threadedly connected to the outer surface of the stud 62. A counterweight seat 64 is fixedly connected to the bottom end of the adjusting cylinder 63. The support member 6 is provided in four sets, and each set of fixing ears 513 is provided with a set of support members 6.

[0039] The above solution is adopted: through the combination structure of fixed ear 513, fixed groove 514, connecting column 61, stud 62, adjusting cylinder 63 and counterweight 64, the protective component 5 can be stably supported and its height can be adjusted, adapting to different specifications of digestion containers. At the same time, the design of counterweight 64 enhances the overall stability of the device and avoids tilting or shifting during the stirring process.

[0040] The working principle of this invention is as follows: First, a rock and mineral powder sampling operation is performed. The connecting pipe 31 of the sampling component 3 is engaged with the tapered tube at the bottom of the temporary storage cylinder 1. The ground rock and mineral powder is spread evenly on a flat container. The sampling cover 32 is placed over the powder, so that the sealing ring 33 is in close contact with the surface of the container. The piston rod 2 is pulled upward, and a negative pressure is formed inside the temporary storage cylinder 1. Under the action of atmospheric pressure difference, the powder enters the inner cavity of the temporary storage cylinder 1 along the arc transition surface of the sampling cover 32. After sampling is completed, the sampling component 3 is disassembled. Then, the operation is switched to the injection operation. The connecting pipe 41 of the injection component 4 is engaged with the tapered tube at the bottom of the temporary storage cylinder 1. Then, the baffle 51 of the protective component 5 is placed over the top opening of the digestion container. The connecting posts 61 of the four sets of support components 6 are inserted into the fixing grooves 514 of the fixing ears 513. The adjustment is then rotated. Adjust the height of the section cylinder 63 to keep the baffle 51 horizontal and stable. Then, pass the end of the injection tube 42 through the through hole of the rotating bead 522 and thread it in, so that the end of the injection tube 42 is inserted into the acid solvent in the digestion container, close to the bottom of the container. Then push the piston rod 2, and the powder in the storage cylinder 1 slowly slides into the acid solvent along the injection tube 42. After pushing is completed, pull out the piston rod 2, inject a small amount of deionized water into the storage cylinder 1, reinsert the piston rod 2 and push it to flush the residual powder on the inner wall of the connecting tube 2 41 and the injection tube 42 into the digestion container. During this process, keep the end of the injection tube 42 immersed in the acid solvent. Then, perform a stirring and mixing operation, and continue to push the storage cylinder 1. The axial thrust is transmitted to the rotating plate 52 through the connecting tube 2 41 and the injection tube 42, driving the rotating plate 52. 2. Rotating around the center of the mounting groove 511, while the injection pipe 42 rotates around the center of the rotating bead 522 through the engagement of the threaded groove 43 and the rotating bead 522, forming a double stirring motion. This drives the acid solvent to form a vortex, ensuring thorough mixing of the powder and the acid solvent. After completing the operation, the adjusting cylinder 63 is rotated in the opposite direction to lower the height. The support component 6 and the protective component 5 are then disassembled. The temporary storage cylinder 1, sampling component 3, and injection component 4 are rinsed with deionized water, soaked in dilute nitric acid, and dried for later use, awaiting subsequent acid dissolution and instrument testing. The sealed sampling and injection structure design of the temporary storage cylinder 1, sampling component 3, and injection component 4 eliminates the problem of rock and mineral powder flying during the sampling and injection stages. At the same time, the immersion feeding and rinsing process ensures no sample residue, significantly improving the quantitative accuracy of the sample and avoiding... To prevent deviations in test data due to sample loss and provide a precise and reliable basis for the test solution in rock and mineral composition analysis, the full-coverage design of the baffle 51 of the protective component 5 and the stable support structure of the support component 6 effectively block acid splashing and acid mist dispersion during acid dissolution and digestion, reducing the safety hazards of highly corrosive acid reagents to operators. At the same time, it avoids the corrosive pollution of experimental equipment by acid, reduces equipment maintenance costs, and improves the safety and environmental friendliness of experimental operations. The dual stirring motion design of the injection tube 42, which combines revolution and rotation, enables the rock and mineral powder and acid solvent to mix quickly and evenly, avoiding local agglomeration and improving the efficiency and thoroughness of acid dissolution and digestion. Meanwhile, the hemispherical bottom design protects the inner wall of the digestion container from scratch damage, extends the service life of the container, and reduces the cost of experimental consumables.

[0041] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A splash-proof sample introduction device for rock and mineral powder used in acid leaching testing, comprising: A temporary storage cylinder (1) for temporarily storing rock and mineral powder that needs to be added to an acid solvent is characterized in that a piston rod (2) is connected to the top of the temporary storage cylinder (1), and a conical tube for sucking in and discharging the powder is provided through the bottom of the temporary storage cylinder (1). A sampling device (3) for sucking in the powder or a sample injection device (4) for discharging the powder into the acid solvent in the digestion container is snapped onto the outside of the conical tube. A protective device (5) for preventing acid splashing is provided on the sample injection device (4), and a support device (6) is provided on the protective device (5). The injection device (4) includes a second connecting tube (41) that engages with the tapered tube at the bottom of the temporary storage cylinder (1), and an injection tube (42) is connected through the bottom of the second connecting tube (41). The protective component (5) includes a baffle (51) covering the top opening of the digestion container, a rotating plate (52) is provided on the baffle (51), and the injection tube (42) passes through the rotating plate (52).

2. The anti-splashing sample introduction device for rock and mineral powder used in acid dissolution testing according to claim 1, characterized in that, The inner side of the baffle (51) is provided with an installation groove (511), which is circular. The inner side of the installation groove (511) is provided with a connecting groove (512), which is annular. Each outer circular surface of the baffle (51) is fixedly connected with a fixing ear (513). There are four sets of fixing ears (513), which are symmetrically distributed on the outer circular surface of the baffle (51). Each set of fixing ears (513) is provided with a U-shaped fixing groove (514).

3. The anti-splashing sample introduction device for rock and mineral powder used in acid dissolution testing according to claim 2, characterized in that, The rotating plate (52) is disposed in the mounting groove (511) and has the same size as the mounting groove (511). A rotating ring (521) is fixedly connected to the outer circular surface of the rotating plate (52). The rotating ring (521) is rotatably inserted into the connecting groove (512). A rotating bead (522) is embedded on the rotating plate (52) and is rotatably connected to the rotating plate (52). The diameter of the rotating bead (522) is greater than the thickness of the rotating plate (52), so that the upper and lower ends of the rotating bead (522) penetrate the rotating plate (52).

4. The anti-splashing sample introduction device for rock and mineral powder used in acid dissolution testing according to claim 3, characterized in that, The injection tube (42) has a threaded groove (43) on its outer circular surface, the bottom end of the injection tube (42) is hemispherical, and the rotating bead (522) has a through hole.

5. A rock and mineral powder anti-splash injection device for acid dissolution testing according to claim 4, characterized in that, The injection tube (42) passes through the through hole, and the injection tube (42) is threadedly connected to the rotating ball (522) through the threaded groove (43). The length of the threaded groove (43) is the same as the length of the through hole.

6. A rock and mineral powder anti-splash injection device for acid dissolution testing according to claim 5, characterized in that, The support member (6) includes an I-shaped connecting column (61) that is inserted into the fixing groove (514), and the connecting column (61) is tightly fitted with the fixing ear (513). A stud (62) is fixedly connected to the bottom end of the connecting column (61), and an adjusting cylinder (63) is threadedly connected to the outer surface of the stud (62). A counterweight (64) is fixedly connected to the bottom end of the adjusting cylinder (63). The support member (6) is provided in four sets, and a set of support members (6) is provided on each set of fixing ears (513).

7. A rock and mineral powder anti-splash injection device for acid dissolution testing according to claim 6, characterized in that, The sampling component (3) includes a connecting pipe (31) that engages with the tapered tube at the bottom of the temporary storage cylinder (1). The bottom end of the connecting pipe (31) is connected to a sampling cover (32). The sampling cover (32) has an inverted U-shaped cross section and a rounded transition surface at the top.

8. A rock and mineral powder anti-splash injection device for acid dissolution testing according to claim 7, characterized in that, A sealing ring (33) is fixedly connected to the outside of the sampling cover (32), and the bottom end of the sealing ring (33) is flush with the bottom end of the sampling cover (32).

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