Inductively coupled plasma emission spectrometer sampling device

Abstract

The invention discloses an inductively coupled plasma emission spectrometer sample introduction device and relates to the technical field of spectrometer sample introduction. The inductively coupled plasma emission spectrometer sample introduction device comprises a feeding pipe, the feeding end of the feeding pipe is inserted into a sampling pipe, the middle of the feeding pipe is provided with a rubber hose pump motor for providing power for liquid conveying of the feeding pipe, and the discharging end of the feeding pipe is communicated with the receiving end of an atomizing chamber; the atomizing chamber is communicated with one end of the argon conveying pipe, the conveying pump is communicated with the other end of the argon conveying pipe, limiting conditions are provided through the limiting block, the rotating sleeve is rotated to drive the sliding groove to move, the sliding groove drives the sliding rod to move in the sliding groove, and the argon conveying pipe is arranged in the atomizing chamber through the fact that the sliding rod is located at different positions of the sliding groove. The sliding rod drives the transmission block to slide in the ring block, the transmission block drives the arc block to clamp the wall of the sampling tube through movement of the transmission block in the ring block, the sampling tube is closed in cooperation with the cover plate, and the sampling tube is prevented from toppling over and a sample is prevented from being lost and damaged in the sampling process.

Description

Technical Field

[0001] The invention relates to the technical field of spectrometer sampling, in particular to a sampling device for an inductively coupled plasma emission spectrometer. Background Art

[0002] Inductively coupled plasma emission spectrometer is an analytical device used for element detection and quantitative analysis. Inductively coupled plasma emission spectrometer uses inductively coupled plasma as a light source, and produces characteristic emission spectra by exciting atoms and ions in the sample, thereby determining the type and content of elements in the sample. Inductively coupled plasma emission spectrometer has the ability to detect multiple elements simultaneously, and can quickly analyze a variety of elements from metals to non-metals. This device has important applications in environmental testing, food safety, pharmaceuticals, geological exploration and other fields, providing strong support for scientific research and industrial production.

[0003] The high-concentration sample ICP detection method and an ICP spectrometer sampling system recorded in the patent document with announcement number CN115963101A continuously keep the sampling system of the ICP spectrometer warm, so that the high-concentration solution entering the system is more easily atomized into small aerosols after being heated and enters the matrix tube to be plasmatized, which is beneficial to the sampling efficiency and atomization efficiency of low-concentration standard solutions and high-concentration standard solutions being close to each other, thereby inhibiting the decrease in the intensity of element spectral lines under high concentrations and reducing the self-absorption phenomenon, improving the linear correlation between concentration and spectral intensity in the working curve over a wide concentration range, and can improve the linear range of the standard solution and the content range of the elements to be measured in the sample, thereby improving the accuracy of ICP spectrometer analysis. The sampling tube of this ICP spectrometer sampling system is not convenient to close during sampling, and the sampling tube is easy to tip over during the sampling process, causing sample loss and damage. Solution and particles will remain on the inner wall of the feed tube and inside the atomization chamber, affecting the detection accuracy when performing multiple sampling detection.

[0004] Based on this, a sample introduction device for an inductively coupled plasma emission spectrometer is now provided, which can eliminate the disadvantages of the existing device. Summary of the invention

[0005] The object of the present invention is to provide a sample introduction device for an inductively coupled plasma emission spectrometer to solve the problems in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An inductively coupled plasma emission spectrometer sampling device comprises a feed pipe, wherein the feed end of the feed pipe is inserted into a sampling pipe, a hose pump motor for providing power for feeding the feed pipe is arranged in the middle of the feed pipe, the discharge end of the feed pipe is connected to a receiving end of an atomization chamber, the atomization chamber is connected to one end of an argon delivery pipe, the delivery pump is connected to the other end of the argon delivery pipe, an output socket for inputting plasma into an inductively coupled plasma emission spectrometer is arranged at the upper end of the atomization chamber, a sealing mechanism for maintaining the sealing of the sampling pipe and preventing the loss of samples is arranged at the contact position between the feed pipe and the sampling pipe, and the feed pipe is connected to a cleaning component for cleaning the feed pipe and the atomization chamber.

[0008] On the basis of the above technical solution, the present invention also provides the following optional technical solution:

[0009] In an optional solution: the sealing mechanism includes a piston sleeve, the piston sleeve is slidably connected to the feed pipe, the surface of the piston sleeve is fixedly connected to the cover plate, and the lower end of the cover plate is provided with a clamping element for clamping the wall of the sampling tube so that the cover plate closes the sampling tube.

[0010] In an optional solution: the driving device includes a sliding rod, the sliding rod is fixedly connected to one end of the transmission block, the surface of the rotating sleeve is provided with four sliding grooves, the sliding grooves are slidably connected to the sliding rod, and the surface of the sliding rod is provided with two limit blocks.

[0011] In an optional solution: the fixing member includes an arc block, and the arc block is fixedly connected to one end of the transmission block.

[0012] In an optional solution: the cleaning component includes a water pipe, which is connected to the side of the feed pipe. The water pipe flushes the particle residues on the inner wall of the feed pipe and the inside of the atomization chamber through a water supply module.

[0013] In an optional solution: the water delivery module includes a water delivery pump, one end of a water delivery pipe is connected to an output end of the water delivery pump, and a water reservoir for storing ultrapure water is provided at the water delivery end of the water delivery pump.

[0014] In an optional solution: a wastewater storage tank for collecting waste is provided on the side of the sampling tube.

[0015] In an optional solution: a limiter is provided on the hose pump motor to prevent the feed pipe from moving.

[0016] In an optional solution: a buffer pad is provided at the lower end of the cover plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention provides limiting conditions through a limiting block. By rotating the rotating sleeve, the rotating sleeve drives the sliding groove to move, and the sliding groove drives the sliding rod to move in the sliding groove. By the sliding rod being in different positions of the sliding groove, the sliding rod drives the transmission block to slide in the ring block. By the movement of the transmission block in the ring block, the transmission block drives the arc block to clamp the wall of the sampling tube, and cooperates with the cover plate to close the sampling tube, so as to prevent the sampling tube from tipping over during the sampling process and the loss and damage of the sample.

[0019] 2. The present invention will leave residual solution and particles on the inner wall of the feed pipe and the inside of the atomization chamber. Ultrapure water is delivered through the water pipe to flush the inner wall of the feed pipe and the inner wall of the atomization chamber, so that the test results of multiple random inspections are more accurate, and the flushed waste is stored in the wastewater storage tank to complete the centralized treatment of the waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 It is a schematic structural diagram of the piston sleeve of the present invention.

[0022] Figure 3 It is a cross-sectional view of the cover plate of the present invention.

[0023] Figure 4 It is a structural schematic diagram of the rotating sleeve of the present invention.

[0024] Figure 5 It is a schematic structural diagram of the ring block of the present invention.

[0025] Figure 6 It is a schematic structural diagram of the water storage device of the present invention.

[0026] Notes on figure numbers: 101. Feed pipe, 102. Hose pump motor, 103. Atomization chamber, 104. Argon pipe, 105. Delivery pump, 106. Sampling tube, 201. Piston sleeve, 202. Cover plate, 203. Rotating sleeve, 204. Sliding groove, 205. Sliding rod, 206. Limiting block, 207. Transmission block, 208. Ring block, 209. Arc block, 301. Water pipe, 302. Water pump, 303. Water reservoir, 304. Wastewater storage tank. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] In one embodiment, Figure 1-Figure 3As shown, an inductively coupled plasma emission spectrometer sampling device comprises a feed pipe 101, wherein the feed end of the feed pipe 101 is inserted into the interior of a sampling tube 106, a hose pump motor 102 is provided in the middle of the feed pipe 101 for providing power for the infusion of the feed pipe 101, the discharge end of the feed pipe 101 is connected to the receiving end of an atomization chamber 103, the atomization chamber 103 is connected to one end of an argon delivery tube 104, the delivery pump 105 is connected to the other end of the argon delivery tube 104, an output socket for inputting plasma into the inductively coupled plasma emission spectrometer is provided at the upper end of the atomization chamber 103, and a protective cover is provided at the contact position between the feed pipe 101 and the sampling tube 106. The sealing mechanism of the sampling tube 106 is used to maintain the sealing performance and prevent the loss of the sample. The feed tube 101 is connected to the cleaning assembly for cleaning the feed tube 101 and the atomization chamber 103. The feed tube 101 is inserted into the sampling tube 106 and powered by the hose pump motor 102. The feed tube 101 outputs the sampled specimen in the sampling tube 106 to the atomization chamber 103. The argon gas is injected into the atomization chamber 103 through the cooperation of the argon delivery tube 104 and the delivery pump 105. The argon gas is ionized into plasma by inductive coupling. The plasma can excite atoms or molecules in the sample to emit characteristic spectra, thereby performing elemental analysis.

[0029] In one embodiment, Figure 2 and Figure 3 As shown, the sealing mechanism includes a piston sleeve 201, the piston sleeve 201 is slidably connected to the feed pipe 101, the surface of the piston sleeve 201 is fixedly connected to the cover plate 202, and the lower end of the cover plate 202 is provided with a clamping element for clamping the tube wall of the sampling tube 106 so that the cover plate 202 seals the sampling tube 106. The upper end of the sampling tube 106 is sealed by the mutual cooperation of the piston sleeve 201 and the cover plate 202, providing conditions for preventing the sampling tube 106 from tipping over and losing the sample;

[0030] In one embodiment, Figure 3 and Figure 4 As shown, the clamping element includes a ring block 208, the ring block 208 is fixedly connected to the lower end of the cover plate 202, the ring block 208 is slidably connected to four transmission blocks 207, the transmission block 207 slides in the ring block 208 through a driving device, the clamping end of the transmission block 207 is fixedly connected to a fixing member for fixing the sampling tube 106, the ring block 208 provides sliding conditions for the transmission block 207, and the mutual cooperation between the ring block 208 and the transmission block 207 provides conditions for clamping sampling tubes 106 of different sizes;

[0031] In one embodiment, Figure 4 and Figure 5As shown, the driving device includes a sliding rod 205, the sliding rod 205 is fixedly connected to one end of a transmission block 207, four sliding grooves 204 are provided on the surface of the rotating sleeve 203, the sliding groove 204 is slidably connected to the sliding rod 205, and two limit blocks 206 are provided on the surface of the sliding rod 205, and the limit blocks 206 provide limit conditions, and the rotating sleeve 203 is rotated to drive the sliding groove 204 to move, and the sliding groove 204 drives the sliding rod 205 to generate displacement in the sliding groove 204, and the sliding rod 205 is in different positions of the sliding groove 204, The sliding rod 205 drives the transmission block 207 to slide in the ring block 208, providing a power condition for the transmission block 207 to clamp the tube wall of the sampling tube 106;

[0032] In one embodiment, Figure 4 and Figure 5 As shown, the fixing member includes an arc block 209, and the arc block 209 is fixedly connected to one end of the transmission block 207. Through the movement of the transmission block 207 in the ring block 208, the transmission block 207 drives the arc block 209 to clamp the wall of the sampling tube 106;

[0033] In one embodiment, Figure 6 As shown, the cleaning component includes a water pipe 301, which is connected to the side position of the feed pipe 101. The water pipe 301 flushes the inner wall of the feed pipe 101 and the particle residue inside the atomization chamber 103 through the water delivery module. After a specimen sampling test is completed, the inner wall of the feed pipe 101 and the inner wall of the atomization chamber 103 will have residual solution and particles. Ultrapure water is delivered through the water pipe 301 to flush the inner wall of the feed pipe 101 and the inner wall of the atomization chamber 103, so that the test results of multiple random inspections are more accurate, and the flushed waste is stored in the wastewater storage tank 304 to complete the centralized treatment of the waste;

[0034] In one embodiment, Figure 2 and Figure 3 As shown, the water delivery module includes a water delivery pump 302, one end of a water delivery pipe 301 is connected to an output end of the water delivery pump 302, and a water reservoir 303 for storing ultrapure water is provided at the water delivery end of the water delivery pump 302. The water reservoir 303 provides a water source for the water delivery pump 302, and the water delivery pump 302 provides ultrapure water to be transported inside the power box water delivery pipe 301, thereby providing conditions for cleaning the inner wall of the feed pipe 101 and the inside of the atomization chamber 103.

[0035] The above embodiment discloses a sampling device for an inductively coupled plasma emission spectrometer, wherein the upper end of the sampling tube 106 is sealed by the mutual cooperation of the piston sleeve 201 and the cover plate 202, and the limiting condition is provided by the limiting block 206. By rotating the rotating sleeve 203, the rotating sleeve 203 drives the sliding groove 204 to move, and the sliding groove 204 drives the sliding rod 205 to generate displacement in the sliding groove 204. By the sliding rod 205 being in different positions of the sliding groove 204, the sliding rod 205 drives the transmission block 207 to slide in the ring block 208. By the movement of the transmission block 207 in the ring block 208, the transmission block 207 drives the arc block 209 to clamp the tube wall of the sampling tube 106. The upper end of the sampling tube 106 is sealed by the mutual cooperation of the piston sleeve 201 and the cover plate 202, so as to provide conditions for preventing the sampling tube 106 from tipping over and losing the sample. After the clamping is completed, the hose pump motor 102 provides power, and the feeding tube 101 The sample specimen in the sampling tube 106 is output to the inside of the atomization chamber 103, and argon gas is injected into the atomization chamber 103 through the cooperation of the argon delivery tube 104 and the delivery pump 105. The argon gas is ionized into plasma through inductive coupling. The plasma can excite the atoms or molecules in the sample to emit a characteristic spectrum, thereby performing element analysis. After the detection is completed, the feed tube 101 is removed from the sampling tube 106 by rotating the rotating sleeve 203, and the feed port of the feed tube 101 is placed in the wastewater storage tank 304. The water reservoir 303 provides a water source for the water delivery pump 302, and the water delivery pump 302 provides power to deliver ultrapure water to the inside of the water delivery tube 301. The ultrapure water is delivered through the water delivery tube 301 to flush the inner wall of the feed tube 101 and the inner wall of the atomization chamber 103, so that the detection results of multiple random inspections are more accurate, and the flushed waste is stored in the wastewater storage tank 304 to complete the centralized treatment of the waste.

[0036] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A sampling device for an inductively coupled plasma emission spectrometer, comprising a feed pipe (101), wherein the feed end of the feed pipe (101) is inserted into a sampling tube (106), a hose pump motor (102) is provided in the middle of the feed pipe (101) for providing power for the feed pipe (101) to deliver liquid, the discharge end of the feed pipe (101) is connected to a receiving end of an atomization chamber (103), the atomization chamber (103) is connected to one end of an argon delivery pipe (104), the delivery pump (105) is connected to the other end of the argon delivery pipe (104), and an output socket for inputting plasma into the inductively coupled plasma emission spectrometer is provided at the upper end of the atomization chamber (103), characterized in that: A sealing mechanism is provided at the contact position between the feed pipe (101) and the sampling pipe (106) to maintain the sealing of the sampling pipe (106) and prevent the sample from being lost or damaged. The feed pipe (101) is connected to a cleaning component for cleaning the feed pipe (101) and the atomization chamber (103).

2. The sampling device for inductively coupled plasma emission spectrometer according to claim 1, characterized in that: The sealing mechanism comprises a piston sleeve (201), the piston sleeve (201) is slidably connected to the feed pipe (101), the surface of the piston sleeve (201) is fixedly connected to the cover plate (202), and the lower end of the cover plate (202) is provided with a clamping element for clamping the wall of the sampling tube (106) so that the cover plate (202) seals the sampling tube (106).

3. The sampling device for inductively coupled plasma emission spectrometer according to claim 2, characterized in that: The clamping element comprises a ring block (208), the ring block (208) is fixedly connected to the lower end of the cover plate (202), the ring block (208) is slidably connected to four transmission blocks (207), the transmission block (207) slides in the ring block (208) through a driving device, and the clamping end of the transmission block (207) is fixedly connected to a fixing piece for fixing the sampling tube (106).

4. The sampling device for inductively coupled plasma emission spectrometer according to claim 3, characterized in that: The driving device comprises a sliding rod (205), wherein the sliding rod (205) is fixedly connected to one end of a transmission block (207), the surface of the rotating sleeve (203) is provided with four sliding grooves (204), the sliding grooves (204) are slidably connected to the sliding rod (205), and the surface of the sliding rod (205) is provided with two limit blocks (206).

5. The sampling device for inductively coupled plasma optical emission spectrometer according to claim 3, characterized in that: The fixing member comprises an arc block (209), and the arc block (209) is fixedly connected to one end of the transmission block (207).

6. The sampling device for inductively coupled plasma optical emission spectrometer according to claim 1, characterized in that: The cleaning component comprises a water pipe (301), the water pipe (301) being connected to a side position of the feed pipe (101), and the water pipe (301) flushes the particle residues on the inner wall of the feed pipe (101) and inside the atomization chamber (103) through a water supply module.

7. The sampling device for inductively coupled plasma emission spectrometer according to claim 6, characterized in that: The water delivery module comprises a water delivery pump (302), one end of a water delivery pipe (301) is connected to an output end of the water delivery pump (302), and a water reservoir (303) for storing ultrapure water is provided at the water delivery end of the water delivery pump (302).

8. The sample introduction device for inductively coupled plasma optical emission spectrometer according to claim 5, characterized in that: A sealing strip is provided on the surface of the arc block (209).

9. The sample introduction device for inductively coupled plasma optical emission spectrometer according to claim 1, characterized in that: A wastewater storage tank (304) for collecting waste is provided on the side of the sampling tube (106).

10. The sample introduction device for inductively coupled plasma optical emission spectrometer according to claim 2, characterized in that: The hose pump motor (102) is provided with a limiter to prevent the feed pipe (101) from being displaced, and a buffer pad is provided at the lower end of the cover plate (202).

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