Metal impurity detection equipment and detection method thereof

Abstract

The invention discloses metal impurity detection equipment and a detection method thereof, and relates to the technical field of ICP, the detection equipment comprises a spectrograph body, the front side of the spectrograph body is provided with a sampling groove, and the top of the sampling groove is provided with a plugging port for plugging a sampling tube; the other end of the sampling pipe is connected with the sampling end in an inserted mode, a peristaltic pump is fixedly arranged in the sampling groove, and the peristaltic pump is used for conveying a to-be-sampled sample into the spectrograph body through the sampling end, the sampling pipe and the insertion port in sequence; a sampler is further arranged on one side of the sampling groove, and a filtering module is arranged in the sampler and used for filtering solid impurities in a sample; compared with the prior art, the solid impurities in the sample can be effectively filtered before being input into the spectrograph body, so that the phenomena that the solid impurities enter the spectrograph body to cause equipment damage and influence the detection precision are avoided.

Description

Technical Field

[0001] The present invention relates to the field of ICP technology, and in particular to a metal impurity detection device and a detection method thereof. Background Art

[0002] ICP (inductively coupled plasma optical emission spectrometry) is a highly sensitive, multi-element detection technology based on atomic emission spectrometry. Its core is to use high-temperature plasma to excite atoms or ions in the sample, and to perform qualitative and quantitative analysis by measuring the specific wavelength light signals emitted by them. The metal elements that can be detected include: Na, K, Cu, Fe, Pb, Zn, Cd, Cr, Ni, Ca, Mg, As, Mn, Ba, AL, Hg, V, Sb, Sn, Li, B, Sr, Mo, Be, Bi, Ge, Au, Ag, Ti, etc. 29 kinds, and the measurement unit is to the ppb level.

[0003] In the production process of electronic-grade products, ICP technology can be used to monitor process parameters and environmental conditions to ensure product consistency and reliability, such as electronic-grade ethyl acetate, electronic-grade methyl acetate, ethyl methyl carbonate (EMC), diethyl carbonate (DEC), dimethyl carbonate (DMC), and electronic-grade ethanol; ICP technology can also be used in the quality control and R&D stages of electronic-grade products to help engineers optimize production processes and improve product performance;

[0004] In actual application, solid particles such as dust and insoluble salts that may exist in the sample may clog key components such as the injection system, nebulizer or torch tube if they enter the ICP instrument directly. These blockages will not only affect the normal operation of the instrument, but may also lead to deviations in the analysis results. The existing technology usually sets a filter at the injection tube to filter solid impurities, but after use, the filter is easily clogged and difficult to clean. Summary of the invention

[0005] The purpose of the present invention is to provide a metal impurity detection device and a detection method thereof to solve the following technical problems:

[0006] The prior art provides a filter at the sample inlet tube, which can filter out solid impurities. However, the filter is easily clogged and difficult to clean. A new filter needs to be replaced after each use, which is very costly.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A metal impurity detection device comprises a spectrometer body, a sampling slot is provided on the front side of the spectrometer body, and a plug-in interface for plugging in a sampling tube is provided on the top of the sampling slot;

[0009] The other end of the sampling tube is plugged into the sampling end head, and a peristaltic pump is fixedly arranged in the sampling slot, and the peristaltic pump is used to transport the sample to be sampled to the spectrometer body through the sampling end head, the sampling tube and the plug interface in sequence;

[0010] A sampler is also arranged on one side of the sampling trough, and a filtering module is arranged in the sampler to filter solid impurities in the sample.

[0011] Preferably, a filter cavity and a sampling cavity are respectively provided on both sides of the sampler, the filter cavity and the sampling cavity are separated by a partition plate fixedly arranged in the sampler, a filter tank connected to the filter cavity and the sampling cavity is provided at the bottom of the partition plate, and a filter assembly is provided in the filter tank;

[0012] Wherein, a first through hole for sampling is provided at the top of the filtering cavity, and a second through hole for sampling is provided at the top of the sampling cavity.

[0013] Preferably, the filter assembly comprises a filter plate slidably embedded in the filter tank, and a plurality of filter holes are evenly arranged on the filter plate; through grooves are respectively arranged on the tank walls at both ends of the filter tank;

[0014] Wherein, stoppers which are slidably engaged with the through grooves are fixedly arranged at both ends of the filter plate and on one side close to the filter cavity.

[0015] Preferably, a sealing plate is slidably arranged on the side of the filter tank close to the sampling cavity, and a plurality of groups of sealing rods corresponding to and plugged into the filter holes are fixedly arranged on the side of the sealing plate close to the filter plate;

[0016] Wherein, the sealing plate is connected to a driving part which drives it to slide in the filter tank.

[0017] Preferably, a T-shaped groove is provided on one side of the sealing plate away from the filter plate, and the pushing portion comprises a T-shaped plate slidably arranged in the T-shaped groove;

[0018] Wherein, a reserved groove for sliding of the sealing plate is also provided on one side of the through groove.

[0019] Preferably, a sealing seat is slidably arranged on one side of the reserved groove close to the sampling cavity, a first inclined guide surface is arranged at one end of the sealing seat away from the reserved groove, and second inclined guide surfaces are arranged at both ends of the sealing plate, and the first inclined guide surface is parallel to the second inclined guide surface;

[0020] Wherein, supports are fixedly arranged on the groove walls of the sampling cavity, guide rods fixed to the sealing seat are slidably arranged in the supports, and a first spring is arranged on the guide rods.

[0021] Preferably, a third inclined guide surface is provided on one side of each sealing seat close to the reserved groove.

[0022] Preferably, the pushing part comprises a limit plate fixedly arranged on both sides of the sampling cavity, a push rod fixed to the T-shaped plate is slidably arranged in the limit plate, a second spring is arranged on the push rod, one end of the push rods on both sides away from the T-shaped plate is fixed to the push plate, an L-shaped bracket is fixedly arranged on one side of the push plate close to the filter cavity, and an inclined guide plate is fixedly arranged on the L-shaped bracket;

[0023] Wherein, the sampling end is fixed to the driving end of the electric cylinder fixedly arranged on the spectrometer body.

[0024] Preferably, a second inclined surface is provided at the bottom of the sampling cavity, and the second inclined surface extends from the filter groove toward the sampling cavity, and its height gradually decreases.

[0025] A detection method for metal impurity detection equipment comprises the following steps:

[0026] Put the sample to be tested into the filter chamber for digestion;

[0027] After digestion is completed, the electric cylinder drives the sampling end head to descend, and the sampling end head passes through the second through hole and extends into the sampling cavity. The sampling end head abuts against the inclined guide plate, and the push plate is driven to slide away from the filter cavity through the L-shaped bracket. The push plate can drive the T-shaped plate and the sealing plate to move away from the filter cavity through the push rod, and the sealing plate is separated from the filter plate.

[0028] Liquid samples can enter the sampling cavity along the filter holes, and solid impurities are filtered between the two side blocks;

[0029] Filtering solid impurities in the sample through a filtering module provided in the sampler;

[0030] The peristaltic pump transports the sample in the sampling cavity to the spectrometer body through the sampling end, the sampling tube and the plug interface for detection.

[0031] Beneficial effects of the present invention:

[0032] (1) The present invention first puts the sample to be tested into the sampler, and filters the solid impurities in the sample through the filtering module provided in the sampler. After the filtering is completed, the peristaltic pump sequentially transports the sample to be sampled through the sampling end, the sampling tube and the plug interface to the spectrometer body for testing. Compared with the prior art, the present invention can effectively filter the solid impurities in the sample before inputting into the spectrometer body, so as to avoid the phenomenon that the solid impurities enter the spectrometer body and cause equipment damage and affect the detection accuracy;

[0033] (2) In the present invention, during the filtering process, the sample in the filter cavity flows through the filter hole to the sampling cavity, and the filtered solid impurities are temporarily stored between the two side blocks. When the sampling is completed, the filter plate can be pushed out along the through groove. During this process, the block can scrape the solid impurities out of the filter groove, thereby achieving the effect of cleaning the impurities;

[0034] (3) After sampling is completed, before the filter plate is taken out of the filter tank, the pushing part of the present invention pushes the sealing plate to fit the filter plate through the T-plate. When the experimenter pulls out the filter plate, the sealing plate can be pulled out simultaneously. The T-plate can slide along the T-slot. During this process, the sealing rod is always in a state of being embedded in the filter hole, so solid impurities will not enter the filter hole. After the filter plate is completely pulled out, the experimenter only needs to remove the impurities attached to the surface of the filter plate, and there is no need to replace a new filter plate. This not only improves the cleaning efficiency but also reduces the experimental cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below in conjunction with the accompanying drawings.

[0036] Figure 1 It is a structural schematic diagram of a metal impurity detection device of the present invention;

[0037] Figure 2 It is a side view structural schematic diagram of a metal impurity detection device of the present invention;

[0038] Figure 3 It is a structural schematic diagram of a sampler in a metal impurity detection device of the present invention;

[0039] Figure 4 This is a schematic diagram of the cross-sectional structure of a sampler in a metal impurity detection device of the present invention. Figure 1 ;

[0040] Figure 5 This is a schematic diagram of the cross-sectional structure of a sampler in a metal impurity detection device of the present invention. Figure 2 ;

[0041] Figure 6 It is a structural schematic diagram of a filter plate in a metal impurity detection device of the present invention;

[0042] Figure 7 It is a structural schematic diagram of a sealing plate in a metal impurity detection device of the present invention;

[0043] Figure 8 It is a structural schematic diagram of a metal impurity detection device of the present invention when a sealing plate and a filter plate are separated;

[0044] Fig. 9 It is a structural schematic diagram of a sealing plate and a filter plate in a metal impurity detection device of the present invention when they are attached;

[0045] Fig.10 It is a structural schematic diagram of a first inclined guide surface in a metal impurity detection device of the present invention.

[0046] In the figure: 1, spectrometer body; 2, electric cylinder; 3, sampler; 4, first inclined surface; 5, filter plate; 6, T-plate; 101, sampling slot; 102, peristaltic pump; 103, plug interface; 201, sampling end; 202, air pump; 203, sampling tube; 301, through slot; 302, handle; 303, second through hole; 304, first through hole; 305, sealing plug; 306, filter chamber; 307, sampling chamber; 308, partition plate; 309, filter chamber; 401, The second inclined surface; 501, sealing plate; 502, blocking seat; 503, first spring; 504, filter hole; 505, sealing rod; 506, T-slot; 507, reserved slot; 508, second inclined guide surface; 509, third inclined guide surface; 510, first inclined guide surface; 511, guide rod; 512, support; 513, sealing seat; 601, push rod; 602, limit plate; 603, push plate; 604, second spring; 605, inclined guide plate; 606, L-shaped bracket. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] Example 1

[0049] See also Figure 1-Figure 2 As shown, the present invention is a metal impurity detection device, including a spectrometer body 1, a sampling slot 101 is opened on the front side of the spectrometer body 1, and a plug interface 103 for plugging in a sampling tube 203 is provided on the top of the sampling slot 101; specifically, the sampling tube 203 of this embodiment is a retractable hose, and its sampling angle can be freely adjusted.

[0050] The other end of the sampling tube 203 is plugged into the sampling end 201, and a peristaltic pump 102 is fixedly arranged in the sampling slot 101. The peristaltic pump 102 is used to transport the sample to be sampled to the spectrometer body 1 through the sampling end 201, the sampling tube 203 and the plug-in port 103 in sequence;

[0051] In this embodiment, a sampler 3 is also arranged on one side of the sampling tank 101, wherein a filtering module is provided in the sampler 3 for filtering solid impurities in the sample;

[0052] It should be noted that, in this embodiment, the sample to be tested is first put into the sampler 3, and the solid impurities in the sample are filtered by the filtering module arranged in the sampler 3. After the filtering is completed, the peristaltic pump 102 transports the sample to be sampled to the spectrometer body 1 through the sampling end 201, the sampling tube 203 and the plug interface 103 in sequence for testing. Compared with the prior art, this embodiment can effectively filter the solid impurities in the sample before inputting the spectrometer body 1, so as to avoid the solid impurities entering the spectrometer body 1 and causing equipment damage and affecting the detection accuracy.

[0053] Example 2

[0054] Based on Example 1, please refer to Figure 3-Figure 5 , a filter chamber 306 and a sampling chamber 307 are respectively provided on both sides of the sampler 3, and the filter chamber 306 and the sampling chamber 307 are separated by a partition plate 308 fixedly arranged in the sampler 3, and a filter slot 309 connected to the filter chamber 306 and the sampling chamber 307 is provided at the bottom of the partition plate 308, and a filter assembly is provided in the filter slot 309; wherein, a first through hole 304 for sampling is provided at the top of the filter chamber 306, and a second through hole 303 for sampling is provided at the top of the sampling chamber 307; it can be explained that, in this embodiment, before sampling, the sample is first added to the filter chamber 306 through the first through hole 304, and then the solid impurities in the sample are filtered by the filter assembly arranged in the filter slot 309, and the filtered pure liquid sample enters the sampling chamber 307, thereby effectively separating the liquid from the solid, so that during the sampling process, the solid impurities will not be input into the spectrometer body 1.

[0055] In this embodiment, please refer to Figure 4-Figure 6 as well as Fig.10 The filter assembly includes a filter plate 5 that is slidably embedded in the filter groove 309, and a plurality of groups of filter holes 504 are evenly arranged on the filter plate 5; specifically, the present embodiment filters the solid impurities in the sample through the filter holes 504, wherein the aperture of the filter holes 504 can be set accordingly based on the particle size of the solid impurity particles of the product, and this is not limited.

[0056] As a further solution of this embodiment, please refer to Figure 3 and Figure 6-Figure 7, through grooves 301 are respectively provided on the groove walls at both ends of the filter groove 309, wherein, at both ends of the filter plate 5 and on the side close to the filter chamber 306, baffles 502 which are slidably engaged with the through grooves 301 are respectively fixedly arranged; it can be explained that during the filtering process, the sample in the filter chamber 306 passes through the filter hole 504 and flows to the sampling chamber 307, and the filtered solid impurities are temporarily stored between the baffles 502 on both sides. When the sampling is completed, the filter plate 5 can be pushed out along the through groove 301. During this process, the baffle 502 can scrape out the solid impurities from the filter groove 309, thereby achieving the effect of cleaning the impurities.

[0057] Accordingly, during the filtering process, since the blocking seats 502 on both sides of the filter plate 5 are embedded in the through groove 301 , a sealing effect can be achieved to prevent the sample from leaking from the through groove 301 .

[0058] In addition, handles 302 are fixedly arranged on one end of the stoppers 502 on both sides away from the filter plate 5, so that the experimenter can pull the filter plate 5 out of the filter tank 309 after the sampling is completed.

[0059] Furthermore, before sampling, the sample is usually digested. The digestion process can release the elements in the sample in the form of ions or molecules, making it easier to be excited and ionized by plasma. This helps to improve the sensitivity and accuracy of the analysis. In order to ensure that the sample can be stably digested in the filter cavity 306, in this embodiment, please refer to Figure 4-Figure 5 as well as Figure 7 , a sealing plate 501 is also slidably arranged on one side of the filter tank 309 close to the sampling chamber 307, and a plurality of sealing rods 505 correspondingly plugged into the filter holes 504 are fixedly arranged on one side of the sealing plate 501 close to the filter plate 5, wherein the sealing plate 501 is connected to a driving portion that drives it to slide in the filter tank 309; it can be explained that before the sample to be digested is put into the filter tank 309, the driving portion pushes the sealing plate 501 to move in the direction close to the filter plate 5, so that each sealing rod 505 is respectively plugged into the filter hole 504, thereby achieving the effect of sealing the filter hole 504, so that after the sample to be digested is put into the filter chamber 306, the sample will not be discharged from the filter hole 504 to the sampling chamber 307 (see Fig. 9 ), when the digestion is completed, the sealing plate 501 is driven by the pusher to move away from the filter plate 5, so that the sealing rod 505 is separated from the filter hole 504 (see Figure 8 ), the digested sample can be discharged into the sampling chamber 307 through the filter hole 504.

[0060] In this embodiment, please refer to Figure 4-Figure 5In order to allow the digested sample to quickly flow into the sampling chamber 307, a first inclined surface 4 is provided at the bottom of the filter chamber 306, and the height of the first inclined surface 4 gradually decreases toward the filter tank 309; specifically, by providing the first inclined surface 4, the digested sample can quickly flow toward the filter tank 309, and the solid impurities contained in the sample can also be discharged to one side of the filter plate 5 under the action of gravity, so that the blocking seat 502 can scrape off the solid impurities uniformly.

[0061] See also Figure 7 as well as Figure 9-10 , when the filter plate 5 is pulled out from the filter tank 309, in order to facilitate the removal of impurities blocked in the filter hole 504, a T-slot 506 is provided on the side of the sealing plate 501 away from the filter plate 5, and the pushing part includes a T-plate 6 slidably arranged in the T-slot 506, wherein a reserved slot 507 for the sliding of the sealing plate 501 is also provided on one side of the through slot 301; specifically, after the sampling is completed, before the filter plate 5 is taken out from the filter tank 309, the pushing part pushes the sealing plate 501 to fit with the filter plate 5 through the T-plate 6, and the experimenter can pull out the sealing plate 501 at the same time as the filter plate 5 is pulled out, and the T-plate 6 can slide along the T-slot 506. During this process, the sealing rod 505 is always in a state of being embedded in the filter hole 504, so solid impurities will not enter the filter hole 504. After the filter plate 5 is completely pulled out, the experimenter only needs to remove the impurities attached to the surface of the filter plate 5, and there is no need to replace a new filter plate 5, which not only improves the cleaning efficiency but also reduces the experimental cost.

[0062] Further, in order to prevent the filtered sample from leaking from the reserved groove 507, it can be seen that Figure 6-Figure 10, a sealing seat 513 is slidably arranged on one side of the reserved groove 507 close to the sampling chamber 307, a first inclined guide surface 510 is arranged on the end of the sealing seat 513 away from the reserved groove 507, and second inclined guide surfaces 508 are respectively arranged at both ends of the sealing plate 501, and the first inclined guide surface 510 is parallel to the second inclined guide surface 508, wherein, a support 512 is fixedly arranged on the groove wall of the sampling chamber 307, a guide rod 511 fixed to the sealing seat 513 is slidably arranged in the support 512, and a first spring 503 is arranged on the guide rod 511, one end of the first spring 503 is fixed to the sealing seat 513, and the other end is fixed to the support 512; it can be explained that in the initial state, the sealing seats 513 on both sides are respectively The reserved groove 507 is in a blocked state. When the sealing plate 501 is separated from the filter plate 5, the sample will not leak along the reserved groove 507 during the filtration through the filter hole 504. After the sampling is completed, as the experimenter pulls out the filter plate 5 and the sealing plate 501, the second inclined guide surface 508 of the sealing plate 501 first abuts against the first inclined guide surface 510 during the movement. As the sealing plate 501 continues to move, the sealing seat 513 can be pushed to slide into the sampling chamber 307, thereby avoiding interference between the sealing seat 513 and the sealing plate 501. During the movement, the sealing seat 513 compresses the first spring 503 through the guide rod 511 to facilitate the subsequent driving of the sealing seat 513 to reset.

[0063] In addition, each sealing seat 513 is provided with a third inclined guide surface 509 on one side of the reserved groove 507; specifically, when the filter plate 5 and the sealing plate 501 are embedded in the filter groove 309 from the outside, the second inclined guide surface 508 can abut against the third inclined guide surface 509 to drive the sealing seat 513 to slide toward the sampling cavity 307 again.

[0064] See also Figure 1-Figure 3 and 5 and Fig.10The pushing part includes a limit plate 602 fixedly arranged on both sides of the sampling cavity 307, a push rod 601 fixed to the T-plate 6 is slidably arranged in the limit plate 602, and a second spring 604 is arranged on the push rod 601, one end of the second spring 604 is fixed to the T-plate 6, and the other end is fixed to the limit plate 602, and one end of the push rod 601 on both sides away from the T-plate 6 is fixed to the push plate 603, and an L-shaped bracket 606 is fixedly arranged on one side of the push plate 603 close to the filter cavity 306, and an inclined guide plate 605 is fixedly arranged on the L-shaped bracket 606, wherein the sampling end 201 is fixed to the driving end of the electric cylinder 2 fixedly arranged on the spectrometer body 1; it can be explained that, when sampling, the present embodiment can drive the sampling end 201 by the electric cylinder 2 01 descends, and the sampling terminal 201 passes through the second through hole 303 and extends into the sampling cavity 307. As the sampling terminal 201 descends, it first abuts against the inclined guide plate 605. Under the abutment, the push plate 603 can be driven to slide in the direction away from the filter cavity 306 through the L-shaped bracket 606. The push plate 603 can drive the T-shaped plate 6 and the sealing plate 501 to move in the direction away from the filter cavity 306 through the push rod 601, thereby realizing the separation of the sealing plate 501 and the filter plate 5. Correspondingly, when the sampling terminal 201 rises, the second spring 604 can drive the sealing plate 501 to reset. This embodiment does not need to set other servo drive equipment to adjust the positional relationship between the sealing plate 501 and the filter plate 5, and has higher stability and synchronization.

[0065] In addition, a second inclined surface 401 is provided at the bottom of the sampling chamber 307, and the second inclined surface 401 extends from the filter groove 309 toward the sampling chamber 307, and its height gradually decreases; specifically, this embodiment provides a second inclined surface 401 at the bottom of the sampling chamber 307, which can, on the one hand, accelerate the flow rate of the sample from the filter groove 309 to the sampling chamber 307, and on the other hand, when the sealing plate 501 is separated from the filter plate 5, there can be a gap between the bottom of the sealing plate 501 and the second inclined surface 401, so that the sample can flow into the sampling chamber 307 along the gap.

[0066] Please note that, see Figure 1 and Figure 3 When the sample is placed in the filter chamber 306 for digestion, a chemical reaction will occur and waste gas will be generated. In order to collect the waste gas, in this embodiment, an air pump 202 is arranged on one side of the sampler 3, and the air pump 202 is connected to the filter chamber 306, wherein a sealing plug 305 is embedded in the first through hole 304; specifically, during the digestion of the sample in the filter chamber 306, the first through hole 304 can be sealed by the sealing plug 305 to avoid leakage of the generated waste gas. During the digestion process, the waste gas can be extracted by the air pump 202 to prevent the waste gas from entering the sampling chamber 307 and being sucked into the spectrometer body 1.

[0067] A detection method for metal impurity detection equipment comprises the following steps:

[0068] See also Figure 3-Figure 5 , S1, putting the sample to be tested into the filter chamber 306 for digestion;

[0069] See also Figure 1-Figure 4 After digestion is completed, the electric cylinder 2 drives the sampling end 201 to descend, and the sampling end 201 passes through the second through hole 303 and extends into the sampling cavity 307. The sampling end 201 abuts against the inclined guide plate 605, and the push plate 603 is driven to slide away from the filter cavity 306 through the L-shaped bracket 606. The push plate 603 can drive the T-shaped plate 6 and the sealing plate 501 to move away from the filter cavity 306 through the push rod 601, and the sealing plate 501 is separated from the filter plate 5 (see Figure 8 );

[0070] S3, the liquid sample can enter the sampling cavity 307 along the filter hole 504, and the solid impurities are filtered between the two side blocks 502;

[0071] S4, filtering solid impurities in the sample through the filtering module provided in the sampler 3;

[0072] S5. The peristaltic pump 102 transports the sample in the sampling chamber 307 to the spectrometer body 1 through the sampling end 201, the sampling tube 203 and the plug interface 103 for detection.

[0073] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0074] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A metal impurity detection device, comprising a spectrometer body (1), characterized in that: The spectrometer body (1) is provided with a sampling groove (101) on the front side, and a plug-in interface (103) for plugging in a sampling tube (203) is provided on the top of the sampling groove (101); The other end of the sampling tube (203) is plugged into the sampling end head (201), and a peristaltic pump (102) is fixedly arranged in the sampling slot (101). The peristaltic pump (102) is used to sequentially transport the sample to be sampled through the sampling end head (201), the sampling tube (203) and the plug interface (103) to the spectrometer body (1); A sampler (3) is also arranged on one side of the sampling tank (101), and a filtering module is arranged in the sampler (3) for filtering solid impurities in the sample.

2. A metal impurity detection device according to claim 1, characterized in that: A filter chamber (306) and a sampling chamber (307) are respectively provided on both sides of the sampler (3); the filter chamber (306) and the sampling chamber (307) are separated by a partition plate (308) fixedly arranged in the sampler (3); a filter groove (309) communicating with the filter chamber (306) and the sampling chamber (307) is provided at the bottom of the partition plate (308); a filter assembly is provided in the filter groove (309); The top of the filtering cavity (306) is provided with a first through hole (304) for sampling, and the top of the sampling cavity (307) is provided with a second through hole (303) for sampling.

3. A metal impurity detection device according to claim 2, characterized in that: The filter assembly comprises a filter plate (5) slidably embedded in the filter groove (309), and a plurality of groups of filter holes (504) are evenly provided on the filter plate (5); through grooves (301) are respectively provided on the groove walls at both ends of the filter groove (309); Wherein, stoppers (502) which are slidably engaged with the through groove (301) are fixedly arranged at both ends of the filter plate (5) and on one side close to the filter cavity (306).

4. A metal impurity detection device according to claim 3, characterized in that: A sealing plate (501) is also slidably arranged on the side of the filter tank (309) close to the sampling cavity (307), and a plurality of groups of sealing rods (505) are fixedly arranged on the side of the sealing plate (501) close to the filter plate (5) and are plugged in one-to-one with the filter holes (504); The sealing plate (501) is connected to a driving portion that drives it to slide in the filter tank (309).

5. A metal impurity detection device according to claim 4, characterized in that: A T-shaped groove (506) is provided on one side of the sealing plate (501) away from the filter plate (5), and the pushing portion comprises a T-shaped plate (6) slidably arranged in the T-shaped groove (506); Wherein, a reserved groove (507) for the sealing plate (501) to slide is also provided on one side of the through groove (301).

6. A metal impurity detection device according to claim 5, characterized in that: A sealing seat (513) is slidably arranged on one side of the reserved groove (507) close to the sampling cavity (307), a first inclined guide surface (510) is arranged at one end of the sealing seat (513) away from the reserved groove (507), and second inclined guide surfaces (508) are respectively arranged at both ends of the sealing plate (501), and the first inclined guide surface (510) is parallel to the second inclined guide surface (508); Wherein, supports (512) are fixedly arranged on the groove walls of the sampling cavity (307), a guide rod (511) fixed to a sealing seat (513) is slidably arranged in the support (512), and a first spring (503) is arranged on the guide rod (511).

7. A metal impurity detection device according to claim 6, characterized in that: A third inclined guide surface (509) is provided on one side of each sealing seat (513) close to the reserved groove (507).

8. The metal impurity detection device according to claim 5, characterized in that: The pushing part comprises a limit plate (602) fixedly arranged on both sides of the sampling cavity (307), a push rod (601) fixed to the T-shaped plate (6) is slidably arranged in the limit plate (602), a second spring (604) is arranged on the push rod (601), one end of the push rods (601) on both sides away from the T-shaped plate (6) is fixed to the push plate (603), an L-shaped bracket (606) is fixedly arranged on one side of the push plate (603) close to the filter cavity (306), and an inclined guide plate (605) is fixedly arranged on the L-shaped bracket (606); The sampling end (201) is fixed to the driving end of an electric cylinder (2) fixedly arranged on the spectrometer body (1).

9. The metal impurity detection device according to claim 4, characterized in that: A second inclined surface (401) is provided at the bottom of the sampling cavity (307). The second inclined surface (401) extends from the filtering groove (309) toward the sampling cavity (307), and its height gradually decreases.

10. A detection method for a metal impurity detection device as claimed in claim 8, characterized in that: The steps include: Putting the sample to be tested into the filter chamber (306) for digestion; After digestion is completed, the electric cylinder (2) drives the sampling end (201) to descend, and the sampling end (201) passes through the second through hole (303) and extends into the sampling cavity (307). The sampling end (201) abuts against the inclined guide plate (605), and the push plate (603) is driven to slide in a direction away from the filter cavity (306) through the L-shaped bracket (606). The push plate (603) can drive the T-shaped plate (6) and the sealing plate (501) to move in a direction away from the filter cavity (306) through the push rod (601), and the sealing plate (501) and the filter plate (5) are separated; The liquid sample can enter the sampling cavity (307) along the filter hole (504), and the solid impurities are filtered between the two side blocks (502); Filtering solid impurities in the sample through a filtering module provided in the sampler (3); The peristaltic pump (102) transports the sample in the sampling chamber (307) to the spectrometer body (1) for detection through the sampling end (201), the sampling tube (203) and the plug interface (103) in sequence.

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