Sample preparation device for detection of inductively coupled plasma mass spectrometer

Abstract

The utility model belongs to the technical field of sample plasma detection equipment, particularly relates to a sample preparation device for detection of an inductively coupled plasma mass spectrometer, and provides the following scheme aiming at the problems that the operation is complicated and a final prepared sample cannot be directly obtained due to the fact that the device is driven by a plurality of motors. Comprising a grinding roller, a grinding sample preparation base, a sample collecting screen shell and a collecting bottom box, and is provided with the grinding roller, the sample collecting screen shell and the sample collecting screen shell, so that sample blocks needing to be ground to be prepared into powder can be ground and crushed under the action of the grinding roller and fall into the sample collecting screen shell to be further screened; the prepared sample powder can fall into the collecting bottom box to be collected, so that a final sample preparation sample can be obtained; the grinding roller comprises a crushing roller section and a grinding ball seat, so that the sample block can be crushed and then ground, and the blocky sample does not need to be crushed by knocking or hammering.

Description

Technical Field

[0001] The utility model relates to a sample preparation device, in particular to a sample preparation device for inductively coupled plasma mass spectrometry detection, belonging to the technical field of sample plasma detection equipment. Background Technique

[0002] Inductively coupled plasma mass spectrometry is an instrument for determining ultra-trace elements and isotope ratios, and is widely used for determining trace amounts in rocks, ores, minerals, and groundwater. When in use, it is necessary to first prepare the bulk samples such as rocks, ores, or minerals to be detected into powdered samples, and then accurately weigh and dissolve the powdered samples before further determination. Therefore, when preparing samples, a special device is required to prepare powdered samples.

[0003] In the prior art, such as a mineral product grinding and sample preparation device disclosed in the publication number CN112161851A, which is also for grinding and preparing powdered samples for mineral products. This device can drive a hammer block to initially hammer and crush the mineral products on the partition plate simultaneously by providing a motor 1, a cam, a rotating plate, a sliding ball, a sleeve rod, a spring 1, a push rod, a sliding sleeve 2, a fixed rod, etc., and can drive the grinding block to reciprocate in the grinding disc, so as to grind and crush the mineral products in the grinding disc; by providing a motor 2, the grinding disc can be driven to rotate, and through the cooperation of the grinding block and the grinding disc, the mineral products in the grinding disc can be comprehensively ground, and the grinding and crushing efficiency is high and the energy consumption is low. However, in actual use, the prior art crushes large grinding materials by means of hammering, and then further grinds them through the grinding disc. This method requires two sets of motors to drive the hammer block and the grinding disc to move respectively. Therefore, in actual operation, different motors need to be started in different time periods, that is, the operation process is more cumbersome, and due to the setting of multiple motors, the production cost of the device will be greatly increased. In addition, although the prior art can realize the grinding of mineral products to prepare powdered samples, there will still be some granular samples in the prepared powdered samples, that is, the final sample preparation sample cannot be directly obtained. Summary of the Invention

[0004] The utility model provides a sample preparation device for inductively coupled plasma mass spectrometry detection to solve the technical problems that the above device uses multiple motors to drive, resulting in complicated operation and unable to directly obtain the final sample preparation sample.

[0005] The utility model realizes the above object through the following technical solutions: A sample preparation device for inductively coupled plasma mass spectrometry detection includes a grinding and sample preparation base and a grinding roller. The grinding roller is movably connected in the grinding and sample preparation base. A sample collection sieve shell is also arranged in the grinding and sample preparation base, and the bottom end of the grinding and sample preparation base is connected with a collection bottom box;

[0006] The grinding roller includes a crushing roller section and a grinding ball seat. A number of crushing bumps are connected to the outer surface of the crushing roller section. The crushing roller section is conical. A sieve mesh is fixedly connected inside the sample collecting sieve housing. The bottom plate of the sample collecting sieve housing and the sieve mesh are both inclined. And a sample discharge pipe and a sieve material discharge pipe are communicated with the lower inclined end of the sample collecting sieve housing.

[0007] As a further solution of the present utility model: A grinding cavity and a sieve housing cavity are formed in the grinding and sample preparation base. The grinding cavity and the sieve housing cavity are connected in a vertically distributed manner. A rotating bearing is fixedly embedded at the center of the bottom end of the sieve housing cavity. The grinding roller is coaxially fixedly connected with a driving rotating rod. And the bottom end of the driving rotating rod is fixedly sleeved on the rotating bearing. The grinding roller is located in the grinding cavity. The sample collecting sieve housing is located in the sieve housing cavity. And the rod body of the driving rotating rod penetrates through the sample collecting sieve housing.

[0008] As a further solution of the present utility model: A driving motor is also fixedly connected in the sieve housing cavity. The driving motor is located on one side of the sample collecting sieve housing. A driving wheel is fixedly sleeved on the rotating shaft of the driving motor. A driven wheel is fixedly sleeved on the driving rotating rod. And the driven wheel and the driving wheel are connected by a transmission belt.

[0009] As a further solution of the present utility model: Two support rods are vertically connected to the bottom of the sample collecting sieve housing. And the two support rods are respectively located on both sides of the driving rotating rod. The upper surface of the driven wheel is integrally connected with a lifting track bottom ring. The upper end surface of the lifting track bottom ring is in a continuous concave arc shape and convex arc shape. And the bottom ends of the support rods are abutted against the symmetric positions of the upper end surface of the lifting track bottom ring.

[0010] As a further solution of the present utility model: A ball is arranged at the bottom end of the support rod. And the ball is movably embedded at the bottom end of the support rod.

[0011] As a further solution of the present utility model: Through holes are formed in the bottom plate of the sample collecting sieve housing and the sieve mesh installed in the sample collecting sieve housing. A sealing bearing is sleeved on the rod body part of the driving rotating rod penetrating through the sample collecting sieve housing. And a soft rubber sealing ring is connected at the gap between the sealing bearing and the through hole.

[0012] As a further solution of the present utility model: A docking edge is integrally connected to the upper end opening of the sample collecting sieve housing. A number of limiting connecting rods movably penetrate through the docking edge. And the upper ends of the limiting connecting rods are fixedly connected to the top wall of the sieve housing cavity. Springs are sleeved on the rod bodies of the limiting connecting rods.

[0013] As a further solution of the present utility model: A stabilizing connecting rod is fixedly connected to one side of the grinding and sample preparation base. A stabilizing base is arranged below the grinding and sample preparation base. And the bottom end of the stabilizing connecting rod is vertically connected to the stabilizing base.

[0014] As a further solution of the utility model: a side wall of the collecting bottom box connected to the bottom of the grinding sample preparation base is threadedly penetrated by a locking bolt, a partition is provided in the collecting bottom box, and a sieve material collecting box is movably placed in the cavity of the collecting bottom box on one side of the partition, and a sample collecting box is movably placed in the cavity of the collecting bottom box on the other side of the partition, and the sieve material collection box and the sample collection box correspond to be directly below the sieve material discharge pipe and the sample discharge pipe respectively.

[0015] As a further solution of the utility model: an upper cover is clamped at the upper end opening of the grinding sample preparation base, and a limiting sleeve is connected to the center of the inner side surface of the upper cover.

[0016] The beneficial effects of the utility model are:

[0017] 1. A grinding roller, a sample collecting sieve shell and a sample collecting sieve shell are provided. The grinding roller is movably connected in a grinding sample preparation base. A sample collecting sieve shell is also provided in the grinding sample preparation base. A collecting bottom box is connected to the bottom end of the grinding sample preparation base, so that a sample block to be ground and prepared in powder form can be ground and crushed under the action of the grinding roller, and fall into the sample collecting sieve shell for further screening, so that the prepared sample powder can fall into the collecting bottom box and be collected, so as to obtain the final sample preparation sample;

[0018] 2. The grinding roller consists of a crushing roller section and a grinding ball seat. The large-particle sample block is crushed by the crushing roller section, and then the sample block crushed into small particles can fall down and be further crushed until the sample block is crushed into the smallest particle and enters the grinding ball seat for further grinding, so that the sample block can be crushed first and then ground, without the need to knock or hammer the block sample for crushing;

[0019] 3. By providing a driving motor, and the upper surface of the driven wheel driven by the driving motor is connected to the bottom ring of the lifting track, the operations of crushing, grinding and screening the sample can be realized by a motor, so when the device is actually used, it is simpler and easier to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the grinding sample preparation base of the utility model;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the collection bottom box of the utility model;

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the upper cover of the utility model;

[0024] Figure 5Schematic cross-sectional structure diagram of the grinding and sample preparation base of the present utility model;

[0025] Figure 6 For the present utility model Figure 5 Schematic diagram of the structure at position A in

[0026] Figure 7 Schematic cross-sectional structure diagram of the sample collecting sieve shell of the present utility model;

[0027] Figure 8 Schematic cross-sectional structure diagram of the bottom end of the support rod of the present utility model;

[0028] Figure 9 Schematic connection structure diagram of the grinding roller, sample collecting sieve shell and drive motor of the present utility model;

[0029] Figure 10 Schematic diagram of the structure of the driving runner wheel of the present utility model.

[0030] In the figure: 1. Grinding and sample preparation base; 11. Grinding chamber; 12. Sieve shell chamber; 13. Rotating bearing; 2. Stabilizing connecting rod; 3. Collection bottom box; 31. Locking bolt; 32. Partition board; 33. Sieve material collection box; 34. Sample collection box; 4. Upper cover; 41. Limit sleeve; 5. Stable base; 6. Grinding roller; 61. Crushing roller section; 62. Grinding ball seat; 63. Crushing convex block; 64. Driving rotating rod; 7. Sample collecting sieve shell; 71. Limit connecting rod; 72. Spring; 73. Sample discharge pipe; 74. Sieve material discharge pipe; 75. Sieve mesh; 76. Docking edge; 77. Support rod; 78. Ball; 79. Sealing bearing; 710. Soft rubber sealing ring; 8. Drive motor; 81. Driving runner wheel; 82. Transmission belt; 83. Driven runner wheel; 84. Lifting track bottom ring. Specific implementation manners

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0032] Embodiment 1

[0033] As Figure 1 、 Figure 5 and Figure 7As shown in the figure, a sample preparation device for inductively coupled plasma mass spectrometry detection includes a grinding sample preparation base 1 and a grinding roller 6. The grinding roller 6 is movably connected inside the grinding sample preparation base 1. A sample collection sieve housing 7 is also arranged inside the grinding sample preparation base 1. The bottom end of the grinding sample preparation base 1 is connected with a collection bottom box 3, so that the sample block that needs to be ground into powder can be ground and crushed under the action of the grinding roller 6 and fall into the sample collection sieve housing 7 for further screening, so that the prepared sample powder can fall into the collection bottom box 3 and be collected;

[0034] The grinding roller 6 includes a crushing roller section 61 and a grinding ball seat 62. A number of crushing protrusions 63 are connected to the outer surface of the crushing roller section 61. The crushing roller section 61 is in a conical shape. A sieve mesh 75 is fixedly connected inside the sample collection sieve housing 7. The bottom plate of the sample collection sieve housing 7 and the sieve mesh 75 are both arranged in an inclined shape, and the inclined lower end of the sample collection sieve housing 7 is communicated with a sample discharge pipe 73 and a sieve material discharge pipe 74. The large-particle sample block can be crushed by the crushing roller section 61, and then the crushed small-particle sample block can fall downward for further crushing until the sample block is crushed into the smallest particle state and enters the grinding ball seat 62 for further grinding treatment, so as to realize the prior crushing and then grinding treatment of the sample block. Then the ground sample will fall into the sample collection sieve housing 7, and the sample that has not reached the powder state will be screened out through the sieve mesh 75, and the sample and the sieve material will be output through the sample discharge pipe 73 and the sieve material discharge pipe 74 respectively to complete the complete sample preparation process for the sample to be measured.

[0035] Example Two

[0036] Improved on the basis of Example One:

[0037] As Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 As shown in the figure, a grinding cavity 11 and a sieve housing cavity 12 are opened inside the grinding sample preparation base 1. The grinding cavity 11 and the sieve housing cavity 12 are connected in a vertically distributed manner. A rotating bearing 13 is fixedly embedded at the center of the bottom end of the sieve housing cavity 12. A driving rotating rod 64 is fixedly connected to the grinding roller 6 coaxially, and the bottom end of the driving rotating rod 64 is fixedly sleeved on the rotating bearing 13. The grinding roller 6 is located inside the grinding cavity 11, and the sample collection sieve housing 7 is located inside the sieve housing cavity 12, and the rod body of the driving rotating rod 64 penetrates through the sample collection sieve housing 7, so that the grinding roller 6 can rotate inside the grinding cavity 11, thereby realizing the crushing and grinding operations of the sample block, and the ground sample can directly fall into the sample collection sieve housing 7 to realize screening.

[0038] Further, a driving motor 8 is fixedly connected inside the sieve housing cavity 12. The driving motor 8 is located on one side of the sample collecting sieve housing 7. A driving runner 81 is fixedly sleeved on the rotating shaft of the driving motor 8. A driven runner 83 is fixedly sleeved on the driving rotating rod 64. The driven runner 83 is connected to the driving runner 81 through a transmission belt 82. By the rotation of the driving motor 8, the driven runner 83 is driven to rotate, so as to drive the driving rotating rod 64 and the grinding roller 6 to rotate, and then the crushing and grinding actions on the sample block can be realized.

[0039] Further, two support rods 77 are vertically connected to the bottom of the sample collecting sieve housing 7. The two support rods 77 are respectively located on both sides of the driving rotating rod 64. An elevating track bottom ring 84 is integrally connected to the upper surface of the driven runner 83. The upper end surface of the elevating track bottom ring 84 is in a continuous concave arc shape and convex arc shape. The bottom ends of the support rods 77 are abutted against the symmetric positions on the upper end surface of the elevating track bottom ring 84. When the driven runner 83 rotates, the outer convex arc-shaped upper end surface of the elevating track bottom ring 84 can synchronously lift the two support rods 77 upward, and then the sample collecting sieve housing 7 can be pushed upward. When the inner concave arc-shaped upper end surface of the elevating track bottom ring 84 rotates to the bottom end part of the support rod 77, the sample collecting sieve housing 7 can be moved downward by the action of the spring 72. Therefore, with the continuous rotation of the driven runner 83, the sample collecting sieve housing 7 can be regularly jolted up and down to complete the screening action on the ground sample.

[0040] Further, a ball 78 is arranged at the bottom end of the support rod 77. The ball 78 is movably embedded in the bottom end of the support rod 77. The ball 78 can roll on the upper end surface of the elevating track bottom ring 84, so that the sample collecting sieve housing 7 can jolt up and down more smoothly.

[0041] Further, through holes are formed in the bottom plate of the sample collecting sieve housing 7 and the sieve mesh 75 installed inside the sample collecting sieve housing 7. A sealing bearing 79 is sleeved on the part of the rod body of the driving rotating rod 64 passing through the sample collecting sieve housing 7. A soft rubber sealing ring 710 is connected to the gap between the sealing bearing 79 and the through hole. Under the joint action of the sealing bearing 79 and the soft rubber sealing ring 710, the rotation of the driving rotating rod 64 will not affect the up and down jolting of the sample collecting sieve housing 7, and it can prevent some powdered samples from falling from the through holes during the screening of the ground samples inside the sample collecting sieve housing 7.

[0042] Further, a docking edge 76 is integrally connected to the upper opening of the sample collecting sieve housing 7. A number of limiting connecting rods 71 penetrate through the docking edge 76 movably. The upper ends of the limiting connecting rods 71 are fixedly connected to the top wall of the sieve housing cavity 12. A spring 72 is sleeved on the rod bodies of the limiting connecting rods 71. The sample collecting sieve housing 7 can be connected to the sieve housing cavity 12 in a suspended state, and the sample collecting sieve housing 7 can move up and down to jolt and screen the sample powder falling on the sieve mesh 75.

[0043] As Figure 1 , Figure 3 and Figure 4 shown, one side of the grinding and sample preparation base 1 is fixedly connected with a stable connecting rod 2, a stable base 5 is arranged below the grinding and sample preparation base 1, and the bottom end of the stable connecting rod 2 is vertically connected to the stable base 5, so as to form a stable support for the grinding and sample preparation base 1, and the grinding and sample preparation base 1 can be arranged in a suspended state, so as to facilitate the installation of the collection bottom box 3 at the bottom of the grinding and sample preparation base 1.

[0044] Furthermore, a locking bolt 31 is threadedly penetrated through one side wall of the collection bottom box 3 connected to the bottom of the grinding and sample preparation base 1. A partition 32 is arranged in the collection bottom box 3, and a screening material collection box 33 is movably placed in the cavity on one side of the partition 32 in the collection bottom box 3, and a sample collection box 34 is movably placed in the cavity on the other side of the partition 32 in the collection bottom box 3. The screening material collection box 33 and the sample collection box 34 are respectively located directly below the screening material discharge pipe 74 and the sample discharge pipe 73, so as to realize the fixed installation of the collection bottom box 3 through the locking bolt 31, and enable the screening material and the sample to fall into the screening material collection box 33 and the sample collection box 34 respectively, realizing the classified collection of the screening material and the sample, and the screening material collection box 33 and the sample collection box 34 are also convenient to take and place from the collection bottom box 3.

[0045] Furthermore, an upper cover 4 is clamped at the upper end opening of the grinding and sample preparation base 1. A limiting sleeve 41 is connected to the center of the inner side surface of the upper cover 4. When the upper cover 4 is covered on the upper end opening of the grinding and sample preparation base 1, it can prevent the sample block from splashing when the sample block is crushed and ground. And when the upper cover 4 is covered on the upper end of the grinding and sample preparation base 1, the limiting sleeve 41 can be inserted into the upper end of the driving rotating rod 64 to cooperate with the rotating bearing 13 to form the upper and lower limits of the driving rotating rod 64, ensuring that the driving rotating rod 64 can only rotate along the axis.

[0046] Working principle: Through the rotation of the driving motor 8, the driven runner 83 is driven to rotate, so as to drive the driving rotating rod 64 and the grinding roller 6 to rotate, and then the crushing and grinding actions of the sample block can be realized. When the driving runner 81 rotates, the upper end surfaces of the convex arc shapes of the lifting track bottom ring 84 can synchronously lift the two support rods 77 upwards, and then the sample collection sieve shell 7 can be pushed to move upwards. When the upper end surface of the concave arc shape of the lifting track bottom ring 84 rotates to the bottom end part of the support rod 77, the sample collection sieve shell 7 can be moved downwards by the action of the spring 72. Therefore, with the continuous rotation of the driving runner 81, the sample collection sieve shell 7 can be made to shake up and down regularly to complete the screening action of the ground sample.

[0047] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0048] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sample preparation device for inductively coupled plasma mass spectrometer detection, comprising a grinding sample preparation base (1) and a grinding roller (6), characterized in that: The grinding roller (6) is movably connected in the grinding sample preparation base (1), a sample collecting sieve shell (7) is also provided in the grinding sample preparation base (1), and the bottom end of the grinding sample preparation base (1) is connected to a collecting bottom box (3); The grinding roller (6) comprises a grinding roller segment (61) and a grinding ball seat (62); the outer surface of the grinding roller segment (61) is connected to a plurality of grinding protrusions (63); the grinding roller segment (61) is in the shape of a cone; a screen (75) is fixedly connected to the inside of the sample collecting sieve shell (7); the bottom plate of the sample collecting sieve shell (7) and the screen (75) are both arranged in an inclined shape; and the inclined lower end of the sample collecting sieve shell (7) is connected to a sample discharge pipe (73) and a sieve material discharge pipe (74).

2. The sample preparation device for inductively coupled plasma mass spectrometer detection according to claim 1, characterized in that: The grinding sample preparation base (1) is provided with a grinding chamber (11) and a sieve shell chamber (12), the grinding chamber (11) and the sieve shell chamber (12) are connected in an up-and-down distribution shape, a rotating bearing (13) is fixedly embedded in the center of the bottom end of the sieve shell chamber (12), the grinding roller (6) is coaxially fixedly connected with a driving rotating rod (64), and the bottom end of the driving rotating rod (64) is fixedly sleeved on the rotating bearing (13), the grinding roller (6) is located in the grinding chamber (11), the sample collecting sieve shell (7) is located in the sieve shell chamber (12), and the rod body of the driving rotating rod (64) passes through the sample collecting sieve shell (7).

3. The sample preparation device for inductively coupled plasma mass spectrometer detection according to claim 2, characterized in that: A driving motor (8) is also fixedly connected to the sieve shell cavity (12), and the driving motor (8) is located on one side of the sample collecting sieve shell (7). A driving rotating wheel (81) is fixedly sleeved on the rotating shaft of the driving motor (8), and a driven rotating wheel (83) is fixedly sleeved on the driving rotating rod (64), and the driven rotating wheel (83) is connected to the driving rotating wheel (81) via a transmission belt (82).

4. The sample preparation device for inductively coupled plasma mass spectrometer detection according to claim 3, characterized in that: The bottom of the sample collecting sieve shell (7) is vertically connected to two support rods (77), and the two support rods (77) are respectively located on both sides of the driving rotating rod (64), and the upper surface of the driven rotating wheel (83) is integrally connected to a lifting track bottom ring (84), the upper end surface of the lifting track bottom ring (84) is in the shape of a continuous inward concave arc and an outward convex arc, and the bottom end of the support rod (77) is against the symmetrical position of the upper end surface of the lifting track bottom ring (84).

5. The sample preparation device for inductively coupled plasma mass spectrometer detection according to claim 4, characterized in that: A ball (78) is provided at the bottom end of the support rod (77), and the ball (78) is movably embedded in the bottom end of the support rod (77).

6. The sample preparation device for inductively coupled plasma mass spectrometer detection according to claim 2, characterized in that: The bottom plate of the sample collecting sieve shell (7) and the sieve (75) installed in the sample collecting sieve shell (7) are provided with through holes, the driving rotating rod (64) passes through the rod body of the sample collecting sieve shell (7) and is sleeved with a sealing bearing (79), and a soft rubber sealing rubber ring (710) is connected to the gap between the sealing bearing (79) and the through hole.

7. The sample preparation device for inductively coupled plasma mass spectrometer detection according to claim 6, characterized in that: The upper opening of the sample collecting sieve shell (7) is integrally connected with a docking edge (76), a plurality of limit connecting rods (71) are movably passed through the docking edge (76), and the upper ends of the limit connecting rods (71) are fixedly connected to the top wall of the sieve shell cavity (12), and a spring (72) is sleeved on the rod body of the limit connecting rod (71).

8. The sample preparation device for inductively coupled plasma mass spectrometer detection according to claim 2, characterized in that: A stabilizing connecting rod (2) is fixedly connected to one side of the grinding sample preparation base (1), a stabilizing base (5) is arranged below the grinding sample preparation base (1), and the bottom end of the stabilizing connecting rod (2) is vertically connected to the stabilizing base (5).

9. The sample preparation device for inductively coupled plasma mass spectrometer detection according to claim 1, characterized in that: A locking bolt (31) is threadedly penetrated through one side wall of a collecting bottom box (3) connected to the bottom of the grinding sample preparation base (1); a partition (32) is arranged inside the collecting bottom box (3); a screening material collecting box (33) is movably placed in a cavity on one side of the partition (32) of the collecting bottom box (3); a sample collecting box (34) is movably placed in a cavity on the other side of the partition (32) of the collecting bottom box (3); the screening material collecting box (33) and the sample collecting box (34) are respectively located directly below the screening material discharge pipe (74) and the sample discharge pipe (73).

10. The sample preparation device for inductively coupled plasma mass spectrometer detection according to claim 1, characterized in that: An upper cover (4) is clamped at the upper opening of the grinding sample preparation base (1), and a limiting sleeve (41) is connected to the center of the inner side surface of the upper cover (4).

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