Efficient cleaning equipment and method for sampling cone and interception cone for inductively coupled plasma mass spectrometer

Abstract

The invention discloses efficient cleaning equipment for a sampling cone and an intercepting cone for an inductively coupled plasma mass spectrometer, the efficient cleaning equipment comprises a servo motor, a mounting piece, a telescopic air cylinder, a pressing piece, a driving motor, a lead screw, a sliding table and a polishing cylinder body, and in addition, the invention further discloses an efficient cleaning method for the sampling cone and the intercepting cone for the inductively coupled plasma mass spectrometer. And respectively fixing the concave-convex surfaces of the sampling cone and the intercepting cone, and respectively carrying out rough cleaning and fine cleaning. According to the efficient cleaning device, the servo motor is arranged and matched with the mounting part to achieve fixed mounting and rotation of the sampling cone or the cutting cone, the telescopic air cylinder is arranged and matched with the pressing part to achieve pressing of the sampling cone or the cutting cone, and therefore efficient cleaning is achieved; the cleaning medium on the sampling cone or the intercepting cone is prevented from leaking out, the efficient cleaning effect is guaranteed, the device is simple and efficient, damage to the cone due to the cleaning mode is reduced, and the service life of the sampling cone or the intercepting cone is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of maintenance of instrument analysis devices, and in particular relates to a high-efficiency cleaning device and method for a sampling cone and a skimmer cone used in an inductively coupled plasma mass spectrometer. Background Art

[0002] Inductively coupled plasma mass spectrometer (ICP-MS) has the advantages of high sensitivity, small interference between elements, good precision, and easy instrument operation. In recent years, it has been widely used in environmental geology, non-ferrous metals and other industries at home and abroad for trace element detection.

[0003] In inductively coupled plasma mass spectrometry, the sampling cone and the skimmer cone are the core components of the device. The structure consists of two coaxial cones fixed on the base, and there is a 2mm cone hole in the front section. The structure is complex and the surface is close to the mirror surface. The material of the sampling cone and the skimmer cone is usually nickel-based alloy or platinum alloy, which is expensive. A set of nickel cones (generally 2-3 cones are used together) costs about 10,000 yuan, and a set of platinum cones costs as much as 30,000 to 40,000 yuan. During the operation of the instrument, the metal ions, metal oxides, carbides, etc. generated during the detection will be contained in the high-temperature inductively coupled plasma. When passing through the detection channel, that is, the cone hole (mouth), they will adhere to and accumulate on the surface of the sampling cone and the skimmer cone, especially near the cone hole. If not cleaned in time, it will seriously affect the detection effect of the equipment. Therefore, according to the degree of cone contamination, the sampling cone and the skimmer cone need to be cleaned from time to time to remove the contaminants adhering to the cone surface to ensure the accuracy and reliability of the test results.

[0004] At present, there are two methods for cleaning sampling cones and intercepting cones. One is to use a chemical method, that is, to use a solvent to dissolve the contaminants deposited on the surface of the metal cone. Usually, the cone is immersed in dilute nitric acid, and the entire cone is cleaned ultrasonically, or the edge of the cone is held by hand, and a cotton swab is dipped in a small amount of acid and detergent to wipe the tip of the cone hole. However, the material of the sampling cone and the intercepting cone is usually a nickel-based alloy or a platinum alloy. Corrosive liquids such as nitric acid will cause the surface of the cone to be corroded, especially the tip of the cone. Due to the tip effect, the cone hole is easily corroded, resulting in the enlargement and deformation of the cone hole, causing the cone to be scrapped. The second is to use physical methods to remove contaminants. That is, manual polishing with sandpaper and polishing paste. The intensity of polishing is difficult to control, which can easily cause the cone hole (mouth) to be damaged and deformed, greatly reducing the service life of the cone.

[0005] Therefore, there is a need for an efficient cleaning device and method for a sampling cone and a skimmer cone for an inductively coupled plasma mass spectrometer. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide an efficient cleaning device for a sampling cone and a skimmer cone for an inductively coupled plasma mass spectrometer in view of the above-mentioned deficiencies of the prior art. The device realizes the fixed installation and rotation of the sampling cone or the skimmer cone by setting a servo motor and cooperating with a mounting piece, realizes the compression of the sampling cone or the skimmer cone by setting a telescopic cylinder and cooperating with a clamping piece, thereby realizing efficient cleaning, and prevents the cleaning medium on the sampling cone or the skimmer cone from leaking out by setting a driving motor and cooperating with the installation of a polishing cylinder body, thereby ensuring the effect of efficient cleaning, being simple and efficient, reducing the damage to the cone by the cleaning method, and extending the service life of the sampling cone or the skimmer cone.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a high-efficiency cleaning device for sampling cones and skimmer cones for inductively coupled plasma mass spectrometers, characterized in that the cleaning device includes a body, a servo motor is arranged on the body, a mounting piece for mounting the sampling cone or the skimmer cone is fixed on the output shaft of the servo motor, a telescopic cylinder is also arranged on the body, a clamping piece for clamping the sampling cone or the skimmer cone in cooperation with the mounting piece is fixed on the output shaft of the telescopic cylinder, a mounting groove is opened between the servo motor and the telescopic cylinder on the body, a drive motor is built-in on one side of the mounting groove, the drive motor is connected to a lead screw pointing to the servo motor and the telescopic cylinder respectively through a coupling, a slide is arranged on the lead screw, and a polished cylinder body whose inner diameter cooperates with the mounting piece and the clamping piece is arranged on the slide.

[0008] The above-mentioned high-efficiency cleaning device for sampling cone and skimmer cone for inductively coupled plasma mass spectrometer is characterized in that the mounting piece is connected to the sampling cone or skimmer cone by a pin.

[0009] The above-mentioned high-efficiency cleaning equipment for sampling cones and skimmer cones for inductively coupled plasma mass spectrometer is characterized in that the mounting part includes a convex mounting part and a concave mounting part, the convex mounting part includes a first flange fixed to the output shaft of the servo motor, a rubber cone body matching the concave surface of the sampling cone or the skimmer cone is installed on the first flange by bolts, and the concave mounting part includes a second flange fixed to the output shaft of the servo motor, a groove matching the convex surface of the sampling cone or the skimmer cone is formed on the second flange, and a rubber ring is installed on the outer side of the groove by bolts.

[0010] The above-mentioned high-efficiency cleaning equipment for sampling cones and intercepting cones for inductively coupled plasma mass spectrometer is characterized in that the clamping piece includes a concave clamping piece and a convex clamping piece, the concave clamping piece includes a third flange fixed to the output shaft of the telescopic cylinder, and a concave clamping body that cooperates with the convex surface of the sampling cone or the intercepting cone is installed on the third flange by bolts, and the convex clamping piece includes a fourth flange fixed to the output shaft of the telescopic cylinder, and a convex clamping body that cooperates with the concave surface of the sampling cone or the intercepting cone is installed on the fourth flange by bolts.

[0011] The above-mentioned high-efficiency cleaning equipment for sampling cone and skimmer cone for inductively coupled plasma mass spectrometer is characterized in that both the convex pressing body and the concave pressing body are provided with sealing rings that cooperate with the polishing cylinder body.

[0012] The above-mentioned high-efficiency cleaning device for sampling cone and skimmer cone for inductively coupled plasma mass spectrometer is characterized in that sliding rods cooperating with the sliding table are arranged on both sides of the lead screw.

[0013] The above-mentioned high-efficiency cleaning device for sampling cone and skimmer cone for inductively coupled plasma mass spectrometer is characterized in that limit switches are provided at both ends of the lead screw.

[0014] In addition, the present invention also provides a method for efficiently cleaning a sampling cone and a skimmer cone for an inductively coupled plasma mass spectrometer, characterized in that the method comprises the following steps:

[0015] Step 1: Contract the telescopic cylinder and move the polishing cylinder body to the right, then fix the first flange on the output shaft of the servo motor, and install the rubber cone and the sampling cone on the first flange, then fix the third flange on the output shaft of the telescopic cylinder, and install the concave pressing body on the third flange to obtain the convex assembly equipment;

[0016] Step 2: Apply a coarse cleaning medium to the concave pressing body of the convex surface assembly device obtained in step 1, then move the polishing cylinder to the left and stretch the telescopic cylinder so that the polishing cylinder is sleeved on the first flange and the concave pressing body presses the sampling cone to obtain the convex surface device to be cleaned;

[0017] Step 3, starting the servo motor of the convex surface device to be cleaned obtained in step 2, so that the first flange drives the sampling cone to rotate, thereby roughly cleaning the convex surface of the sampling cone, and obtaining the sampling cone with roughly cleaned convex surface and the device after the roughly cleaned convex surface;

[0018] Step 4, repeating steps 2 and 3 and using a fine cleaning medium for fine cleaning, to obtain a convex surface finely cleaned sampling cone and a device after convex surface fine cleaning;

[0019] Step 5, shrink the telescopic cylinder in the device after the convex surface is finely cleaned in step 4 and move the polishing cylinder body to the right, then remove the first flange and the third flange, and then fix the second flange on the output shaft of the servo motor, fix the fourth flange on the output shaft of the telescopic cylinder, and install the convex pressing body on the fourth flange to obtain the concave surface assembly device;

[0020] Step 6: Apply a coarse cleaning medium to the convex pressing body of the concave surface assembly device obtained in step 5, then move the polishing cylinder to the left and stretch the telescopic cylinder so that the polishing cylinder is sleeved on the third flange and the convex pressing body presses the sampling cone to obtain the concave surface device to be cleaned;

[0021] Step 7, starting the servo motor of the concave surface device to be cleaned obtained in step 6, so that the third flange drives the sampling cone to rotate, thereby roughly cleaning the concave surface of the sampling cone, and obtaining the sampling cone with roughly cleaned concave surface and the device after the roughly cleaned concave surface;

[0022] Step 8, repeating steps 6 and 7 and using fine cleaning media for fine cleaning to obtain a highly efficient cleaning sampling cone;

[0023] Step 9: Repeat steps 1 to 8 for the skimmer cone to obtain a highly efficient and clean skimmer cone.

[0024] The present invention performs coarse cleaning and fine cleaning on the convex surface and concave surface of the sampling cone and the skimmer cone in sequence, thereby achieving efficient cleaning, reducing damage to the cone by the cleaning method, and extending the service life of the sampling cone or the skimmer cone.

[0025] The above method is characterized in that the coarse cleaning medium in step 2 and step 6 is a sponge sheet and 800-mesh white corundum abrasive paste; and the fine cleaning medium in step 4 and step 8 is chopped cotton and 1000-mesh white corundum abrasive paste. The present invention ensures the coarse cleaning effect by using the sponge sheet fitted with the sampling cone (3) or the intercepting cone (4) and the 800-mesh white corundum abrasive paste as the coarse cleaning medium, and ensures the fine cleaning effect by using the chopped cotton and the 1000-mesh white corundum abrasive paste as the fine cleaning medium.

[0026] The method is characterized in that the output shaft speed of the servo motor in the rough cleaning in step 3 and step 7 is 80 r / min to 100 r / min, and the same direction is continued for 1 minute, and then the reverse direction is 1 minute and the alternating rotation is 10 minutes to 20 minutes, and the output shaft speed of the servo motor in the fine cleaning in step 4 and step 8 is 80 r / min to 100 r / min, and the same direction is continued for 1 minute, and then the reverse direction is 1 minute and the alternating rotation is 10 minutes to 20 minutes. The present invention ensures the best efficient cleaning effect by controlling the parameters of rough cleaning and fine cleaning.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] 1. The present invention realizes the fixed installation and rotation of the sampling cone or the skimmer cone by setting a servo motor and cooperating with the mounting parts, realizes the compression of the sampling cone or the skimmer cone by setting a telescopic cylinder and cooperating with the clamping part, thereby realizing efficient cleaning, and prevents the cleaning medium on the sampling cone or the skimmer cone from leaking out by setting a driving motor and cooperating with the installation of a polishing cylinder body, thereby ensuring the effect of efficient cleaning, being simple and efficient, reducing the damage to the cone by the cleaning method, and extending the service life of the sampling cone or the skimmer cone.

[0029] 2. The present invention cleans the convex surface of the sampling cone or the intercepting cone by using a convex mounting part and a concave pressing part in combination, and cleans the concave surface of the sampling cone or the intercepting cone by using a concave mounting part and a convex pressing part in combination, thereby achieving efficient cleaning of both sides of the sampling cone or the intercepting cone.

[0030] 3. The coarse cleaning medium of the present invention adopts sponge sheets and 800-mesh white corundum grinding paste, and the fine cleaning medium adopts chopped cotton and 1000-mesh white corundum grinding paste. On the basis of realizing efficient removal of pollutants, it effectively ensures the protection of the surface of the sampling cone or the intercepting cone, and has the function of repairing the deformed and damaged parts of the cone, which greatly improves the service life of the existing cone and the detection accuracy of the equipment.

[0031] 4. The present invention designs a convex mounting part and a concave pressing part with the same contour shape as the sampling cone or the skimmer cone, and optimizes the optimal working conditions to achieve efficient removal of sediments from the sampling cone or the skimmer cone, especially the cone hole.

[0032] 5. After cleaning, the surface of the sampling cone or the skimmer cone is bright and clean, the edge of the cone hole is smooth and free of burrs, and no metal ion contaminants are found to remain after instrument detection. The roughness of the inner and outer surfaces of the sampling cone or the skimmer cone are Ra0.02 and Ra0.01 mm respectively, thereby achieving automatic and efficient removal of residual oxides and carbides in the sampling cone or the skimmer cone, especially in the cone hole.

[0033] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The invention is a schematic structural diagram of a highly efficient cleaning device for a sampling cone and a skimmer cone for an inductively coupled plasma mass spectrometer.

[0035] Figure 2 It is a schematic diagram of the positional relationship between the machine body, the drive motor and the lead screw of the present invention.

[0036] Figure 3 It is a schematic diagram of the connection relationship between the first flange, the sampling cone and the third flange when the convex surface of the sampling cone is efficiently cleaned in the present invention.

[0037] Figure 4 It is a schematic diagram of the connection relationship between the second flange, the sampling cone and the fourth flange when the concave surface of the sampling cone is efficiently cleaned in the present invention.

[0038] Figure 5 It is a schematic diagram of the connection relationship between the skimmer cone and the first flange when the skimmer cone convex surface is efficiently cleaned according to the present invention.

[0039] Figure 6 This is a physical picture of the sampling cone and the skimmer cone to be cleaned in Example 1 of the present invention.

[0040] Figure 7 This is a physical picture of the sampling cone and the intercepting cone after efficient cleaning in Example 1 of the present invention.

[0041] Description of reference numerals:

[0042] 1—machine body; 2—servo motor; 3—sampling cone;

[0043] 4—intercepting cone; 5—telescopic cylinder 6—mounting slot;

[0044] 7—driving motor; 8—coupling; 9—lead screw;

[0045] 10—slide table; 11—polished cylinder body; 12—pin;

[0046] 13—first flange; 14—rubber cone; 15—second flange;

[0047] 16—groove; 17—rubber ring; 18—third flange;

[0048] 19—concave pressing body; 20—fourth flange; 21—convex pressing body;

[0049] 22—sealing ring; 23—sliding rod; 24—limit switch. DETAILED DESCRIPTION

[0050] The highly efficient cleaning device for a sampling cone and a skimmer cone for an inductively coupled plasma mass spectrometer of the present invention is described in detail through Example 1.

[0051] Example 1

[0052] like Figure 1 and Figure 2 As shown, the high-efficiency cleaning device for the sampling cone 3 and the intercepting cone 4 for the inductively coupled plasma mass spectrometer in this embodiment includes a body 1, a servo motor 2 is arranged on the body 1, a mounting piece for mounting the sampling cone 3 or the intercepting cone 4 is fixed on the output shaft of the servo motor 2, a telescopic cylinder 5 is further arranged on the body 1, a pressing piece for pressing the sampling cone 3 or the intercepting cone 4 in cooperation with the mounting piece is fixed on the output shaft of the telescopic cylinder 5, a mounting groove 6 is opened between the servo motor 2 and the telescopic cylinder 5 on the body 1, a driving motor 7 is built-in on one side of the mounting groove 6, the driving motor 7 is connected to a lead screw 9 pointing to the servo motor 2 and the telescopic cylinder 5 respectively through a coupling 8, a slide 10 is arranged on the lead screw 9, and a polished cylinder body 11 whose inner diameter cooperates with the mounting piece and the pressing piece is arranged on the slide 10.

[0053] It should be noted that, by providing the machine body 1, it is convenient to install the servo motor 2, the telescopic cylinder 5 and the drive motor 7; by providing the servo motor 2 and cooperating with the mounting parts, the fixed installation and rotation of the sampling cone 3 or the intercepting cone 4 are realized; by providing the telescopic cylinder 5 and cooperating with the clamping part, the sampling cone 3 or the intercepting cone 4 is clamped, thereby achieving efficient cleaning; by providing the drive motor 7 and cooperating with the installation of the polishing cylinder body 11, the cleaning medium on the sampling cone 3 or the intercepting cone 4 is prevented from leaking, thereby ensuring the effect of efficient cleaning.

[0054] It should be noted that by opening the installation groove 6 and installing the drive motor 7 inside, the drive motor 7 and the servo motor 2 are prevented from affecting each other, and a position is provided for the installation of the coupling 8, the screw 9 and the slide 10. By setting the servo motor 2, the coupling 8, the screw 9 and the slide 10, the polishing cylinder 11 can be moved left and right. Before cleaning, the polishing cylinder 11 is moved to the right to facilitate the installation of other components, and moved to the left during cleaning to prevent the cleaning medium from leaking.

[0055] like Figure 3 to Figure 5 As shown, in this embodiment, the mounting member is connected to the sampling cone 3 or the skimmer cone 4 by a pin 12 .

[0056] It should be noted that the sampling cone 3 or the intercepting cone 4 itself has a pin hole. The sampling cone 3 or the intercepting cone 4 is fixed by using the pin 12 and the existing pin hole. The operation is convenient, no damage is caused to the sampling cone 3 or the intercepting cone 4, and the surface of the sampling cone 3 or the intercepting cone 4 is ensured to be completely and efficiently cleaned, thereby ensuring the effect of efficient cleaning.

[0057] like Figure 3 to Figure 5 As shown, in this embodiment, the mounting member includes a convex mounting member and a concave mounting member, the convex mounting member includes a first flange 13 fixed to the output shaft of the servo motor 2, a rubber cone 14 matched with the concave surface of the sampling cone 3 or the intercepting cone 4 is installed on the first flange 13 by bolts, and the concave mounting member includes a second flange 15 fixed to the output shaft of the servo motor 2, the second flange 15 is provided with a groove 16 matched with the convex surface of the sampling cone 3 or the intercepting cone 4, and a rubber ring 17 is installed on the outer side of the groove 16 by bolts. By setting a convex mounting part and a concave mounting part, the sampling cone 3 or the intercepting cone 4 can be fixed respectively, and the concave surface and convex surface of the sampling cone 3 or the intercepting cone 4 can be faced outward for cleaning respectively; by setting a first flange 13, it is convenient to fix with the output shaft of the servo motor 2, and it is convenient to install the rubber cone 14. By setting the rubber cone 14, the concave surface of the sampling cone 3 or the intercepting cone 4 is supported and plays a buffering role to prevent it from being crushed. By setting a second flange 15, it is convenient to fix with the output shaft of the servo motor 2. By providing a groove 16, it is convenient to accommodate the convex surface of the sampling cone 3 or the intercepting cone 4. By setting a rubber ring 17, it plays a buffering role to prevent it from being crushed.

[0058] like Figure 3 and Figure 4 As shown, in this embodiment, the clamping member includes a concave clamping member and a convex clamping member, the concave clamping member includes a third flange 18 fixed to the output shaft of the telescopic cylinder 5, and a concave clamping body 19 that cooperates with the convex surface of the sampling cone 3 or the intercepting cone 4 is installed on the third flange 18 by bolts, and the convex clamping member includes a fourth flange 20 fixed to the output shaft of the telescopic cylinder 5, and a convex clamping body 21 that cooperates with the concave surface of the sampling cone 3 or the intercepting cone 4 is installed on the fourth flange 20 by bolts. By setting a concave pressing piece and a convex pressing piece, the sampling cone 3 or the intercepting cone 4 is respectively pressed, and facing the concave surface and convex surface of the sampling cone 3 or the intercepting cone 4 respectively, cleaning is achieved after applying the cleaning medium; by setting the third flange 18, it is convenient to fix with the output shaft of the telescopic cylinder 5, and by setting the concave pressing body 19, it is matched and fitted with the convex surface of the sampling cone 3 or the intercepting cone 4 to achieve efficient cleaning, and by setting the fourth flange 20, it is convenient to fix with the output shaft of the telescopic cylinder 5, and by setting the convex pressing body 21, it is matched and fitted with the concave surface of the sampling cone 3 or the intercepting cone 4, cleaning is achieved after applying the cleaning medium.

[0059] It should be noted that the convex mounting part and the concave pressing part are used together to clean the convex surface of the sampling cone 3 or the intercepting cone 4, and the concave mounting part and the convex pressing part are used together to clean the concave surface of the sampling cone 3 or the intercepting cone 4, thereby achieving efficient cleaning of both sides of the sampling cone 3 or the intercepting cone 4.

[0060] It should be noted that, except for the different cone angles of the rubber cone 14, the concave pressing body 19, the second flange 15 and the convex pressing body 21, the mounting parts and the pressing parts of the sampling cone 3 and the intercepting cone 4 are all common.

[0061] like Figure 3 and Figure 4 As shown, in this embodiment, both the convex pressing body 21 and the concave pressing body 19 are provided with a sealing ring 22 that cooperates with the polishing cylinder body 11. The sealing ring 22 is provided to prevent the cleaning medium from leaking out, thereby improving the cleaning effect.

[0062] like Figure 2 As shown, in this embodiment, slide bars 23 cooperating with the slide table 10 are arranged on both sides of the lead screw 9. By arranging the slide bars 23, the stability of the movement of the slide table 10 is improved.

[0063] like Figure 2 As shown, in this embodiment, both ends of the lead screw 9 are provided with limit switches 24. The limit switches 24 are provided to prevent the slide 10 from moving beyond the limit.

[0064] The method for using the high-efficiency cleaning device for the sampling cone and the skimmer cone of the inductively coupled plasma mass spectrometer of the present invention is described in detail through Examples 2 to 4.

[0065] Example 2

[0066] This embodiment includes the following steps:

[0067] Step 1, shrink the telescopic cylinder 5 and move the polishing cylinder body 11 to the right, then fix the first flange 13 on the output shaft of the servo motor 2, and install the rubber cone 14 and the sampling cone 3 on the first flange 13, then fix the third flange 18 on the output shaft of the telescopic cylinder 5, and install the concave pressing body 19 on the third flange 18 to obtain the convex assembly equipment;

[0068] Step 2: Apply a coarse cleaning medium to the concave pressing body 19 of the convex surface assembly device obtained in step 1, then move the polishing cylinder 11 to the left and stretch the telescopic cylinder 5, so that the polishing cylinder 11 is sleeved on the first flange 13 and the concave pressing body 19 presses the sampling cone 3 to obtain the convex surface device to be cleaned; the coarse cleaning medium is a sponge sheet and 800 mesh white corundum grinding paste;

[0069] Step 3, start the servo motor 2 of the convex surface equipment to be cleaned obtained in step 2, so that the first flange 13 drives the sampling cone 3 to rotate, thereby roughly cleaning the convex surface of the sampling cone 3, and obtaining the sampling cone with roughly cleaned convex surface and the equipment after the roughly cleaned convex surface; the output shaft of the servo motor 2 in the rough cleaning is rotated at 80r / min to 100r / min, and the same direction is continued for 1min, then the reverse direction is rotated for 1min and alternately rotated for 15min;

[0070] Step 4, repeating steps 2 and 3 and using a fine cleaning medium for fine cleaning, to obtain a convex surface finely cleaned sampling cone 3 and a device after convex surface fine cleaning; the fine cleaning medium is made of chopped cotton and 1000 mesh white corundum grinding paste; the output shaft of the servo motor 2 in the rough cleaning has a rotation speed of 80r / min to 100r / min, and the same direction lasts for 1min, then reverses for 1min and rotates alternately for 15min;

[0071] Step 5, shrink the telescopic cylinder 5 in the device after the convex surface is finely cleaned in step 4 and move the polishing cylinder body 11 to the right, then remove the first flange 13 and the third flange 18, and then fix the second flange 15 on the output shaft of the servo motor 2, fix the fourth flange 20 on the output shaft of the telescopic cylinder 5, and install the convex pressing body 21 on the fourth flange 20 to obtain the concave surface assembly device;

[0072] Step 6: Apply a coarse cleaning medium to the convex pressing body 21 of the concave surface assembly device obtained in step 5, then move the polishing cylinder 11 to the left and stretch the telescopic cylinder 5, so that the polishing cylinder 11 is sleeved on the third flange 18 and the convex pressing body 21 presses the sampling cone 3 to obtain the concave surface device to be cleaned; the coarse cleaning medium is a sponge sheet and 800-mesh white corundum grinding paste;

[0073] Step 7, start the servo motor 2 of the concave surface equipment to be cleaned obtained in step 6, so that the third flange 18 drives the sampling cone 3 to rotate, thereby roughly cleaning the concave surface of the sampling cone 3, and obtaining the sampling cone with roughly cleaned concave surface and the equipment after the roughly cleaned concave surface; the output shaft of the servo motor 2 in the rough cleaning is rotated at 80r / min to 100r / min, and the same direction is continued for 1min, and then the reverse direction is rotated for 1min and alternately rotated for 15min;

[0074] Step 8, repeating steps 6 and 7 and using a fine cleaning medium for fine cleaning to obtain a highly efficient and clean sampling cone; the fine cleaning medium is made of chopped cotton and 1000 mesh white corundum abrasive paste; the output shaft of the servo motor 2 rotates at a speed of 80 r / min to 100 r / min during the rough cleaning, and then rotates in the same direction for 1 min, then in the reverse direction for 1 min and alternately rotates for 15 min;

[0075] Step 9: Repeat steps 1 to 8 on the skimmer cone 4 to obtain a highly efficient and clean skimmer cone.

[0076] After testing, the metal ions, oxides and carbides in the sampling cone 3 or the intercepting cone 4 before cleaning in this embodiment will adhere to and accumulate on the cone, especially on the cone orifice, with a roughness of Ra0.05mm. Figure 6 The sampling cone 3 or intercepting cone 4 is efficiently cleaned, the surface of the cone is bright and clean, the edge of the cone hole is smooth and burr-free, and no metal ion pollutants are found to be residual after instrument detection. The roughness of the inner and outer surfaces of the cone are Ra0.02 and Ra0.01mm respectively, thereby realizing automatic and efficient removal of residual oxides and carbides on the cone, especially in the cone hole.

[0077] Example 3

[0078] The difference between this embodiment and embodiment 2 is that in step 3, the rotation is alternately performed for 10 minutes, in step 4, the rotation is alternately performed for 20 minutes, in step 7, the rotation is alternately performed for 20 minutes, and in step 8, the rotation is alternately performed for 10 minutes.

[0079] Example 4

[0080] The difference between this embodiment and embodiment 2 is that in step 3, the rotation is alternately performed for 20 minutes, in step 4, the rotation is alternately performed for 10 minutes, in step 7, the rotation is alternately performed for 10 minutes, and in step 8, the rotation is alternately performed for 20 minutes.

[0081] The above is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent change made to the above embodiment according to the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An efficient cleaning device for a sampling cone and a skimmer cone for an inductively coupled plasma mass spectrometer, characterized in that: The cleaning device comprises a machine body (1), wherein a servo motor (2) is arranged on the machine body (1), a mounting piece for mounting a sampling cone (3) or a cutting cone (4) is fixed on the output shaft of the servo motor (2), a telescopic cylinder (5) is also arranged on the machine body (1), a pressing piece for cooperating with the mounting piece to press the sampling cone (3) or the cutting cone (4) is fixed on the output shaft of the telescopic cylinder (5), a mounting groove (6) is provided between the servo motor (2) and the telescopic cylinder (5) on the machine body (1), a driving motor (7) is built into one side of the mounting groove (6), the driving motor (7) is connected to a lead screw (9) pointing to the servo motor (2) and the telescopic cylinder (5) respectively through a coupling (8), a slide table (10) is arranged on the lead screw (9), and a polishing cylinder body (11) whose inner diameter cooperates with the mounting piece and the pressing piece is arranged on the slide table (10).

2. The high-efficiency cleaning device for a sampling cone and a skimmer cone for an inductively coupled plasma mass spectrometer according to claim 1, characterized in that: The mounting piece is connected to the sampling cone (3) or the intercepting cone (4) by means of a pin (12).

3. The high-efficiency cleaning device for a sampling cone and a skimmer cone for an inductively coupled plasma mass spectrometer according to claim 1, characterized in that: The mounting member comprises a convex mounting member and a concave mounting member, the convex mounting member comprises a first flange (13) fixed to the output shaft of the servo motor (2), a rubber cone (14) matched with the concave surface of the sampling cone (3) or the intercepting cone (4) being mounted on the first flange (13) by bolts, the concave mounting member comprises a second flange (15) fixed to the output shaft of the servo motor (2), a groove (16) matched with the convex surface of the sampling cone (3) or the intercepting cone (4) being formed on the second flange (15), a rubber ring (17) being mounted on the outer side of the groove (16) by bolts.

4. The high-efficiency cleaning device for a sampling cone and a skimmer cone for an inductively coupled plasma mass spectrometer according to claim 1, characterized in that: The pressing member comprises a concave pressing member and a convex pressing member, the concave pressing member comprises a third flange (18) fixed to the output shaft of the telescopic cylinder (5), a concave pressing body (19) matching with the convex surface of the sampling cone (3) or the intercepting cone (4) is installed on the third flange (18) by bolts, and the convex pressing member comprises a fourth flange (20) fixed to the output shaft of the telescopic cylinder (5), a convex pressing body (21) matching with the concave surface of the sampling cone (3) or the intercepting cone (4) is installed on the fourth flange (20) by bolts.

5. The high-efficiency cleaning device for a sampling cone and a skimmer cone for an inductively coupled plasma mass spectrometer according to claim 4, characterized in that: The convex pressing body (21) and the concave pressing body (19) are both provided with sealing rings (22) that match the polishing cylinder body (11).

6. The high-efficiency cleaning device for a sampling cone and a skimmer cone for an inductively coupled plasma mass spectrometer according to claim 1, characterized in that: Sliding rods (23) cooperating with the sliding platform (10) are arranged on both sides of the lead screw (9).

7. The high-efficiency cleaning device for a sampling cone and a skimmer cone for an inductively coupled plasma mass spectrometer according to claim 1, characterized in that: Limit switches (24) are provided at both ends of the lead screw (9).

8. A method for efficiently cleaning a sampling cone and a skimmer cone for an inductively coupled plasma mass spectrometer using the apparatus as claimed in any one of claims 1 to 7, characterized in that: The method comprises the following steps: Step 1, contract the telescopic cylinder (5) and move the polishing cylinder body (11) to the right, then fix the first flange (13) on the output shaft of the servo motor (2), and install the rubber cone (14) and the sampling cone (3) on the first flange (13), then fix the third flange (18) on the output shaft of the telescopic cylinder (5), and install the concave pressing body (19) on the third flange (18), so as to obtain the convex assembly equipment; Step 2: Apply a coarse cleaning medium to the concave pressing body (19) of the convex surface assembly device obtained in step 1, then move the polishing cylinder body (11) to the left and stretch the telescopic cylinder (5), so that the polishing cylinder body (11) is sleeved on the first flange (13) and the concave pressing body (19) presses the sampling cone (3), thereby obtaining the convex surface device to be cleaned; Step 3, starting the servo motor (2) of the convex surface device to be cleaned obtained in step 2, so that the first flange (13) drives the sampling cone (3) to rotate, thereby roughly cleaning the convex surface of the sampling cone (3), and obtaining the sampling cone with the roughly cleaned convex surface and the device after the roughly cleaned convex surface; Step 4, repeating steps 2 and 3 and using a fine cleaning medium to perform fine cleaning, thereby obtaining a convex surface finely cleaned sampling cone (3) and a device after convex surface fine cleaning; Step 5: Contract the telescopic cylinder (5) in the device after the convex surface is finely cleaned obtained in step 4 and move the polishing cylinder body (11) to the right, then remove the first flange (13) and the third flange (18), and then fix the second flange (15) on the output shaft of the servo motor (2), fix the fourth flange (20) on the output shaft of the telescopic cylinder (5), and install the convex pressing body (21) on the fourth flange (20) to obtain the concave surface assembly device; Step 6: Apply a coarse cleaning medium to the convex pressing body (21) of the concave surface assembly device obtained in step 5, then move the polishing cylinder body (11) to the left and stretch the telescopic cylinder (5), so that the polishing cylinder body (11) is sleeved on the third flange (18) and the convex pressing body (21) presses the sampling cone (3), thereby obtaining the concave surface device to be cleaned; Step 7, starting the servo motor (2) of the concave surface device to be cleaned obtained in step 6, so that the third flange (18) drives the sampling cone (3) to rotate, thereby roughly cleaning the concave surface of the sampling cone (3), and obtaining the sampling cone with roughly cleaned concave surface and the device after the roughly cleaned concave surface; Step 8, repeating steps 6 and 7 and using fine cleaning media for fine cleaning to obtain a highly efficient cleaning sampling cone; Step 9: Repeat steps 1 to 8 on the skimmer cone (4) to obtain a highly efficient and clean skimmer cone.

9. The method according to claim 8, characterized in that: The coarse cleaning medium in step 2 and step 6 is a sponge sheet and 800-mesh white corundum abrasive paste; the fine cleaning medium in step 4 and step 8 is chopped cotton and 1000-mesh white corundum abrasive paste.

10. The method according to claim 8, characterized in that: The speed of the output shaft of the servo motor (2) during the rough cleaning described in step 3 and step 7 is 80r / min~100r / min, which is continuously rotated in the same direction for 1 minute, then reversed for 1 minute and rotated alternately for 10min~20min. The speed of the output shaft of the servo motor (2) during the fine cleaning described in step 4 and step 8 is 80r / min~100r / min, which is continuously rotated in the same direction for 1 minute, then reversed for 1 minute and rotated alternately for 10min~20min.

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