Sample introduction device for inductively coupled plasma emission spectrometer

Abstract

The utility model relates to the technical field of spectrometers, in particular to a sampling device for an inductively coupled plasma emission spectrometer, which comprises a machine body fixedly connected with a feeding pipe through a high-pressure suction pump, a guide groove is arranged in the machine body, and a driving motor and a ball screw driven by the driving motor to rotate are arranged in the guide groove. The machine body is provided with an adjusting mechanism used for driving the feeding pipe to move through a ball screw. According to the utility model, the ball screw driven by the driving motor to rotate is arranged in the machine body, and the guide block is utilized to pull the longitudinal sliding sleeve on the movable bracket; a deflection pull rod driven by a deflection motor is arranged on the lifting support, so that the moving block and the deflection support which are of an integrated structure move left and right, and the feeding pipe is supported to be subjected to position adjustment in the left-right direction; the sleeving frame of a frame structure is arranged on the deflection support, and the sleeving frame elastically supported by the limiting spring is arranged in the sleeving frame, so that the feeding pipe can be clamped and fixed conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of spectrometers, in particular to a sample injection device for an inductively coupled plasma emission spectrometer. Background Art

[0002] The high-frequency current generated by the high-frequency oscillator is connected to the copper tubular coil with water cooling inside at the upper end of the plasma generator tube through the coupling system. There are three coaxial argon gas flow channels in the quartz plasma generator tube. The cooling gas (Ar) passes through the external and middle channels, surrounding the plasma to stabilize the plasma torch and cool the quartz tube wall to prevent the tube wall from melting due to heat.

[0003] Existing inductively coupled plasma emission spectrometers achieve sampling and feeding by connecting hoses. Because there are many types of reagent samples involved and used, the position of the hose needs to be adjusted multiple times to draw reagent samples from different reagent containers, including front and back, left and right, and lifting and lowering movements. The hose structure is long and amorphous, so manual traction and support are required all the time, which is not only time-consuming and labor-intensive, but also easily leads to contamination of the feeding tube and reagent samples due to improper contact. Utility Model Content

[0004] The utility model aims to solve the problem of inconvenient material taking operation of the prior art spectrometer, and proposes a sample feeding device for an inductively coupled plasma emission spectrometer.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sampling device for an inductively coupled plasma emission spectrometer comprises a body fixedly connected to a feed pipe via a high-pressure suction pump, a guide groove is provided in the body, a drive motor and a ball screw driven to rotate by the drive motor are arranged in the guide groove, and an adjustment mechanism for driving the feed pipe to move its position is arranged on the body via the ball screw.

[0007] Preferably, the driving motor is fixedly installed in the guide groove, and the ball screw is rotatably installed in the guide groove.

[0008] Preferably, the adjustment mechanism comprises a moving nut matched with the ball screw and slidably sleeved in the guide groove, and a moving bracket is fixedly mounted on the moving nut, a driving cylinder and a guide block driven to move by the driving cylinder are arranged in the moving bracket, and a lifting bracket movably pulled by the guide block is slidably sleeved in the moving bracket;

[0009] A deflection motor is fixedly mounted on the lifting bracket, and an eccentrically arranged traction rod is fixedly connected to the output end of the deflection motor. A moving block slidably mounted on the traction rod is slidably mounted in the lifting bracket, a deflection bracket is welded on the moving block, and two clamps for fixing the feed pipe are fixedly mounted on the deflection bracket.

[0010] Preferably, a traction support rod is pin-connected between the guide block and the lifting bracket.

[0011] Preferably, the two clamps are symmetrically arranged on both ends of the lifting bracket.

[0012] Preferably, the clamp comprises a set frame welded on the deflection bracket, and a telescopic member and a limiting clamp plate of an integral structure are slidably mounted in the set frame, and a limiting spring mounted on the telescopic member is welded between the limiting clamp plate and the set frame.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The utility model sets a ball screw driven to rotate by a driving motor in the machine body, and utilizes the moving nut on the ball screw to drive the moving bracket to move forward and backward to support the position adjustment of the feed pipe in the front and rear direction.

[0015] 2. The utility model provides a guide block driven by a driving cylinder in the mobile bracket, and utilizes the guide block to pull the longitudinal sliding sleeve on the mobile bracket to support the feed pipe to adjust its position in the up and down directions.

[0016] 3. The utility model provides a deflection pull rod driven by a deflection motor on the lifting bracket, so that the moving block of the integrated structure and the deflection bracket move left and right to support the position adjustment of the feed pipe in the left and right direction.

[0017] 4. The utility model provides a set frame of a frame structure on the deflection bracket, and provides a set frame elastically supported by a limit spring in the set frame, so as to clamp and fix the feed pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a sample injection device for an inductively coupled plasma emission spectrometer proposed by the utility model;

[0019] Figure 2 This is a bottom view of a sample injection device for an inductively coupled plasma emission spectrometer proposed by the utility model;

[0020] Figure 3 The utility model provides a schematic diagram of the structure of a holder for a sample introduction device for an inductively coupled plasma emission spectrometer.

[0021] In the figure: 1. body; 2. guide groove; 3. drive motor; 4. ball screw; 5. moving nut; 6. moving bracket; 7. drive cylinder; 8. guide block; 9. lifting bracket; 10. traction support rod; 11. deflection motor; 12. traction rod; 13. moving block; 14. deflection bracket; 15. set frame; 16. telescopic part; 17. limit splint; 18. limit spring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-Figure 3 A sampling device for an inductively coupled plasma emission spectrometer includes a body 1 fixedly connected to a feeding pipe through a high-pressure suction pump. It should be noted that the body 1 absorbs different reagents from different reagent containers through the feeding pipe, and multiple frequency adjustments are required to facilitate uniform absorption.

[0024] A guide groove 2 is provided in the body 1 , and a driving motor 3 and a ball screw 4 driven to rotate by the driving motor 3 are arranged in the guide groove 2 . The guide groove 2 is horizontally provided along the front-back direction to provide a guide limit for the moving nut 5 .

[0025] The machine body 1 is provided with an adjustment mechanism for driving the feed pipe to move its position through the ball screw 4. Figure 2 With attached Figure 3 :

[0026] First, the adjustment mechanism includes a moving nut 5 which is matched with the ball screw 4 and slidably sleeved in the guide groove 2, and a moving bracket 6 is fixedly installed on the moving nut 5. The moving bracket 6 is an L-shaped structure. The moving bracket 6 moves back and forth in a straight line along the front and back direction under the support of the moving nut 5 to drive the feeding pipe to move forward and backward. A driving cylinder 7 and a guide block 8 driven by the driving cylinder 7 are provided in the moving bracket 6, and a lifting bracket 9 movably pulled by the guide block 8 is slidably sleeved in the moving bracket 6. The lifting bracket 9 consists of a T-shaped frame and a cross bar, and moves up and down in the vertical direction under the support of the guide block 8 to adjust the height position of the feeding pipe.

[0027] The adjustment mechanism also includes a deflection motor 11 fixedly mounted on the lifting bracket 9, and an eccentrically arranged traction rod 12 is fixedly connected to the output end of the deflection motor 11. A moving block 13 slidably mounted on the traction rod 12 is slidably mounted in the lifting bracket 9, and a deflection bracket 14 is welded on the moving block 13. Under the traction action of the traction rod 12, the moving block 13 moves back and forth in a straight line along the left and right directions on the lifting bracket 9 to drive the feed pipe to move left and right, and two clamps for fixing the feed pipe are fixedly mounted on the deflection bracket 14.

[0028] Please refer to the instruction manual for details Figure 3 The clamp includes a set frame 15 welded on the deflection bracket 14, and a telescopic part 16 and a limiting clamp 17 of an integrated structure are slidably mounted in the set frame 15. A limiting spring 18 mounted on the telescopic part 16 is welded between the limiting clamp 17 and the set frame 15. The telescopic part 16 is a T-shaped structure, and a silicone pad is attached to the limiting clamp 17 to make gentle contact with the feed pipe, so as not to completely flatten and close the feed pipe when clamped and fixed.

[0029] It should be noted that the specific models and specifications of the motor and cylinder need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be repeated.

[0030] The driving motor 3 is fixedly installed in the guide groove 2, and the ball screw 4 is rotatably installed in the guide groove 2, while guiding and limiting the moving nut 5.

[0031] A traction support rod 10 is pin-connected between the guide block 8 and the lifting bracket 9 .

[0032] The two clamps are symmetrically arranged at both ends of the lifting bracket 9. A corresponding number of clamps can be set according to the number of feeding pipes, so as to fix the positions of any number of feeding pipes.

[0033] The functional principle of the utility model can be explained through the following operation modes:

[0034] The free end of the feed pipe is sleeved in the sleeve frame 15, and the limit clamp 17 clamps the fixed clamp to clamp the feed pipe under the tension of the limit spring 18. Because a soft silicone pad is provided on the limit clamp 17, the feed pipe will not be completely closed;

[0035] The driving motor 3 is controlled to be turned on, and the output end of the driving motor 3 drives the ball screw 4 to rotate, and under the limiting effect of the guide groove 2, the moving nut 5 moves linearly, driving the moving bracket 6 and the feeding tube to move forward and backward;

[0036] The driving cylinder 7 on the movable bracket 6 is controlled to open, so that the guide block 8 that moves up and down drives the lifting bracket 9 to move up and down through the traction support rod 10 to support the lifting and lowering adjustment of the feed pipe;

[0037] The deflection motor 11 is controlled to start on the lifting bracket 9, and the traction rod 12 that deflects left and right is used to drive the moving block 13 to move left and right, and the moving block 13 drives the deflection bracket 14 to deflect synchronously, thereby supporting the feeding pipe to move left and right;

[0038] The feed tube that moves forward and backward, up and down, left and right can sample reagent containers at any position.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sample feeding device for an inductively coupled plasma emission spectrometer, comprising a body (1) fixedly connected to a feed pipe via a high-pressure suction pump, characterized in that: The machine body (1) is provided with a guide groove (2), and a drive motor (3) and a ball screw (4) driven to rotate by the drive motor (3) are arranged in the guide groove (2); the machine body (1) is provided with an adjustment mechanism for driving the feed pipe to move its position via the ball screw (4).

2. The sample injection device for inductively coupled plasma emission spectrometer according to claim 1, characterized in that: The driving motor (3) is fixedly installed in the guide groove (2), and the ball screw (4) is rotatably installed in the guide groove (2).

3. The sample injection device for inductively coupled plasma emission spectrometer according to claim 1, characterized in that: The adjustment mechanism comprises a movable nut (5) which is matched with the ball screw (4) and slidably mounted in the guide groove (2), and a movable bracket (6) is fixedly mounted on the movable nut (5), a driving cylinder (7) and a guide block (8) driven to move by the driving cylinder (7) are arranged in the movable bracket (6), and a lifting bracket (9) movably pulled by the guide block (8) is slidably mounted in the movable bracket (6); A deflection motor (11) is fixedly mounted on the lifting bracket (9), and an eccentrically arranged traction rod (12) is fixedly connected to the output end of the deflection motor (11). A moving block (13) slidably mounted on the traction rod (12) is slidably mounted in the lifting bracket (9), a deflection bracket (14) is welded to the moving block (13), and two clamps for fixing the feed pipe are fixedly mounted on the deflection bracket (14).

4. The sample injection device for inductively coupled plasma emission spectrometer according to claim 3, characterized in that: A traction support rod (10) is pin-connected between the guide block (8) and the lifting bracket (9).

5. The sample injection device for inductively coupled plasma emission spectrometer according to claim 3, characterized in that: The two clamps are symmetrically arranged on both ends of the lifting bracket (9).

6. The sample injection device for inductively coupled plasma emission spectrometer according to claim 3, characterized in that: The clamp comprises a set frame (15) welded to a deflection bracket (14), and a telescopic member (16) and a limiting clamp plate (17) of an integral structure are slidably mounted in the set frame (15), and a limiting spring (18) mounted on the telescopic member (16) is welded between the limiting clamp plate (17) and the set frame (15).

Images