Inductively coupled plasma emission spectrometer and feeding assembly thereof

Abstract

The utility model relates to an inductively coupled plasma emission spectrometer and a feeding assembly thereof, the feeding assembly is used for being connected with a sample introduction pipe of the inductively coupled plasma emission spectrometer, the feeding assembly comprises a liquid guide part, a liquid inlet pipe and a filter screen, one end of the liquid guide part is connected with the sample introduction pipe, and a liquid guide channel arranged in the vertical direction is formed in the liquid guide part; the top end of the liquid guide channel is communicated with the sample injection pipe; the liquid inlet pipe is arranged on the outer side of the liquid guide part, one end of the liquid inlet pipe is communicated with the bottom side of the liquid guide channel, and the filter screen is arranged in the liquid guide channel and located between the liquid inlet pipe and the sample inlet pipe; compared with the prior art, normal use of the inductively coupled plasma emission spectrometer can be prevented from being affected by blockage of the sample introduction pipe, and the filter screen can effectively keep a good filtering effect for a long time.

Description

Technical Field

[0001] This utility model relates to the field of spectrometer technology, specifically to an inductively coupled plasma emission spectrometer and its feeding assembly. Background Technology

[0002] Inductively coupled plasma atomic emission spectrometry (ICP-AES) is an instrument that uses inductively coupled plasma as an excitation source to analyze the analyte element based on the characteristic spectral lines emitted when the atoms of the analyte element in the excited state return to the ground state. It is widely used in fields such as geology, metallurgy, chemical engineering, environmental protection, biological samples, and agricultural research.

[0003] When inductively coupled plasma atomic emission spectrometry (ICP-AES) is used to detect wastewater, the presence of large particulate impurities in the wastewater, coupled with the fact that the sample inlet tube of ICP-AES is usually quite thin, can easily cause blockages, thus affecting the normal operation of the ICP-AES. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a feeding assembly for an inductively coupled plasma atomic emission spectrometer, so as to solve the problem that the presence of large particulate impurities in the wastewater being tested can easily cause blockage of the sample inlet tube of the inductively coupled plasma atomic emission spectrometer.

[0005] To achieve the above objectives, the first aspect of this utility model adopts the following technical solution: a feed assembly for an inductively coupled plasma atomic emission spectrometer, used to connect to the sample inlet tube of the inductively coupled plasma atomic emission spectrometer, comprising:

[0006] The liquid guiding part has one end connected to the sample injection tube and has a liquid guiding channel arranged in a vertical direction inside it. The top end of the liquid guiding channel is connected to the sample injection tube.

[0007] A liquid inlet pipe is provided on the outside of the liquid guiding part and one end of the liquid inlet pipe is connected to the bottom side of the liquid guiding channel;

[0008] A filter screen is disposed within the liquid guiding channel and located between the liquid inlet tube and the sample inlet tube.

[0009] The second aspect of this utility model adopts the following technical solution: an inductively coupled plasma emission spectrometer, including the feeding assembly of the inductively coupled plasma emission spectrometer described in the first aspect of this utility model.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. The feed assembly of this inductively coupled plasma atomic emission spectrometer introduces wastewater into the inlet pipe. The wastewater enters the liquid guiding channel and is filtered by a filter screen to intercept large particulate impurities. The wastewater then passes through the filter screen and enters the sample inlet tube, where it can be used for detection. This avoids the problem of the sample inlet tube being blocked, which would affect the normal operation of the inductively coupled plasma atomic emission spectrometer.

[0012] 2. Wastewater impacts the filter screen vertically within the liquid guiding channel for filtration. The combined effect of gravity on large particles and the impact of wastewater on the filter screen greatly reduces the adhesion of impurities to the filter screen, allowing the filter screen to maintain a good filtration effect for a long time. Attached Figure Description

[0013] Figure 1 This is a partial structural diagram of an embodiment of the present invention after installation;

[0014] Figure 2 for Figure 1 A partial sectional view.

[0015] The reference numerals in the accompanying drawings include: sample inlet tube 1, liquid guiding part 2, liquid guiding tube 21, collection cover 22, connecting sleeve 23, liquid inlet tube 3, filter screen 4, liquid guiding hole 5, annular liquid guiding cover 6, and annular positioning sleeve 7. Detailed Implementation

[0016] The present invention will be further described in detail below through specific embodiments:

[0017] like Figure 1 and Figure 2 As shown in the figure, this utility model embodiment proposes a feed assembly for an inductively coupled plasma atomic emission spectrometer (ICP-AES) for connection to the sample inlet tube 1 of the ICP-AES. The assembly includes a liquid guiding section 2, a liquid inlet tube 3, and a filter screen 4. One end of the liquid guiding section 2 is connected to the sample inlet tube 1 and a liquid guiding channel arranged vertically is formed therein. The top end of the liquid guiding channel is connected to the sample inlet tube 1. The liquid inlet tube 3 is located outside the liquid guiding section 2 and one end is connected to the bottom side of the liquid guiding channel. The filter screen 4 is located inside the liquid guiding channel and between the liquid inlet tube 3 and the sample inlet tube 1.

[0018] The feed assembly of this inductively coupled plasma atomic emission spectrometer (ICP-AES) involves introducing wastewater into the inlet pipe 3. The wastewater enters the liquid guiding channel and is filtered by the filter screen 4 to intercept large particulate impurities. The wastewater then passes through the filter screen 4 and enters the sample inlet pipe 1, where it can then be used for detection. This avoids the problem of the sample inlet pipe 1 becoming clogged and affecting the normal operation of the ICP-AES. The wastewater impacts the filter screen 4 vertically in the liquid guiding channel for filtration. Under the combined effect of the gravity of large particulate impurities and the impact force of the wastewater on the filter screen 4, the adhesion of impurities to the filter screen 4 can be greatly reduced, and the filter screen 4 can effectively maintain a good filtration effect for a long time.

[0019] like Figure 1 and Figure 2 As shown, according to another embodiment of the present invention, the feed assembly of the inductively coupled plasma atomic emission spectrometer includes a liquid guiding section 2 comprising a liquid guiding tube 21 and a collection cover 22. The liquid guiding tube 21 is arranged vertically and its top end is connected to the sample inlet tube 1 through a connecting sleeve 23. A filter screen 4 is disposed inside the liquid guiding tube 21 and the liquid inlet tube 3 is connected to the liquid guiding tube 21. The collection cover 22 is detachably connected to the bottom end of the liquid guiding tube 21.

[0020] In this embodiment, the connecting sleeve 23 is rotatably connected to the liquid guide tube 21 and threadedly connected to the sample inlet tube 1. The bottom end of the liquid guide tube 21 extends into the collection cover 22 and is threadedly connected. An annular positioning sleeve 7 is fitted on the liquid guide tube 21. When the liquid guide tube 21 is screwed into the collection cover 22 and abuts against the annular positioning sleeve 7, the collection cover 22 and the liquid guide tube 21 are stably connected together. The connection method between the connecting sleeve 23 and the sample inlet tube 1, and the connection method between the collection cover 22 and the liquid guide tube 21, facilitate their connection or disassembly. The collection cover 22 seals the bottom end of the liquid guide tube 21 on one hand, and collects large particulate impurities intercepted by the filter screen 4 on the other hand.

[0021] Furthermore, the outer wall of the liquid guiding tube 21 has several liquid guiding holes 5 along its circumferential direction, and the liquid inlet tube 3 is connected to the several liquid guiding holes 5. The sewage introduced by the liquid inlet tube 3 is evenly distributed into the liquid guiding tube 21 through the several liquid guiding holes 5, and then the sewage flows from bottom to top in the liquid guiding tube 21. After the sewage is filtered by the filter screen 4, it enters the sample inlet tube 1. After the liquid inlet tube 3 stops receiving sewage, the large particulate impurities intercepted by the filter screen 4 fall into the collection hood 22 for collection.

[0022] The outer wall of the liquid guiding tube 21 is formed with an annular liquid guiding cover 6 along its circumferential direction. One end of each of the liquid guiding holes 5 away from the central axis of the liquid guiding tube 21 is connected to the liquid guiding cavity inside the annular liquid guiding cover 6. One end of the liquid inlet tube 3 is set on the annular liquid guiding cover 6 to connect with the liquid guiding cavity.

[0023] The inlet pipe 3 is connected to several liquid guiding holes 5 by an annular liquid guiding cover 6, and its structural design is simple.

[0024] To further reduce the deposition of impurities on the filter screen 4, several of the liquid guiding holes 5 are arranged at an angle, and one end of several of the liquid guiding holes 5 near the central axis of the liquid guiding tube 21 is arranged towards the filter screen 4.

[0025] The wastewater introduced by the inlet pipe 3 enters the liquid guiding chamber and is then evenly sprayed into the liquid guiding pipe 21 through several liquid guiding holes 5. The wastewater impacts the filter screen 4, which filters the wastewater. The filtered wastewater then enters the sample inlet pipe 1.

[0026] After the sewage sprayed from several liquid guide holes 5 impacts the filter screen 4, a certain impact force is generated on the filter screen 4, which greatly reduces the deposition of impurities on the filter screen 4. When the sewage inlet pipe 3 stops flowing in, the large particles of impurities intercepted by the filter screen 4 fall into the collection hood 22 for collection under the action of gravity. Then the collection hood 22 can be removed to pour out the impurities collected in the collection hood 22, clean the inside of the collection hood 22, and then connect the collection hood 22 back to the liquid guide pipe 21.

[0027] It should be noted that the diameter of the liquid guiding hole 5 in the attached diagram is for illustrative purposes only. In actual use, it can be adjusted as needed. For example, the diameter of the liquid guiding hole 5 can be larger than the diameter of the sample inlet tube 1.

[0028] like Figure 1 As shown, according to another embodiment of the present invention, the inductively coupled plasma emission spectrometer includes the feed assembly of the inductively coupled plasma emission spectrometer described in any of the above embodiments.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A feed assembly for an inductively coupled plasma atomic emission spectrometer, used to connect to the sample inlet tube of the inductively coupled plasma atomic emission spectrometer, characterized in that, include: The liquid guiding part has one end connected to the sample injection tube and has a liquid guiding channel arranged in a vertical direction inside it. The top end of the liquid guiding channel is connected to the sample injection tube. A liquid inlet pipe is provided on the outside of the liquid guiding part and one end of the liquid inlet pipe is connected to the bottom side of the liquid guiding channel; A filter screen is disposed within the liquid guiding channel and located between the liquid inlet tube and the sample inlet tube.

2. The feeding assembly of an inductively coupled plasma atomic emission spectrometer according to claim 1, characterized in that, The liquid guiding part includes: A liquid guide tube is arranged vertically and its top end is connected to the sample inlet tube through a connecting sleeve. A filter screen is set inside the liquid guide tube and the sample inlet tube is connected to the liquid guide tube. A collection cover, which is detachably connected to the bottom end of the liquid guide tube.

3. The feeding assembly of an inductively coupled plasma atomic emission spectrometer according to claim 2, characterized in that, The outer wall of the liquid guide tube has several liquid guide holes along its circumferential direction, and the liquid inlet tube is connected to the several liquid guide holes.

4. The feeding assembly of an inductively coupled plasma atomic emission spectrometer according to claim 3, characterized in that, The outer wall of the liquid guiding tube is formed with an annular liquid guiding cover along its circumferential direction. The ends of several liquid guiding holes away from the central axis of the liquid guiding tube are all connected to the liquid guiding cavity inside the annular liquid guiding cover. One end of the liquid inlet tube is set on the annular liquid guiding cover to communicate with the liquid guiding cavity.

5. The feeding assembly of an inductively coupled plasma atomic emission spectrometer according to claim 3 or 4, characterized in that, The liquid guiding holes are all arranged at an angle, and the end of each liquid guiding hole closest to the central axis of the liquid guiding tube is arranged towards the filter screen.

6. The feeding assembly of an inductively coupled plasma atomic emission spectrometer according to claim 2, characterized in that, The connecting sleeve is rotatably connected to the liquid guide tube and is threadedly connected to the sample injection tube.

7. An inductively coupled plasma atomic emission spectrometer, characterized in that, The feed assembly of an inductively coupled plasma emission spectrometer according to any one of claims 1-6.

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