CN211062686U - Sampling device of leather inductively coupled plasma mass spectrometer - Google Patents

Abstract

The utility model discloses a leather inductive coupling plasma mass spectrograph's sampling device, which comprises a bod, the interior bottom of organism is fixed with motor one, the vertical upwards of drive end of motor one is fixed with the carousel, the last lateral wall middle part of carousel is fixed with motor two, evenly be fixed with three bull stick, every on the drive end outer wall of motor two the one end that motor two was kept away from to the bull stick all is fixed with arc piece one, the last lateral wall of carousel is fixed with three evenly distributed's fixed column, every all the cover is equipped with the slide on the outer wall of fixed column, every the spout has all been seted up with the junction of fixed column to the slide, every all be fixed with compression spring between the outer wall of fixed column and the inner wall of spout. The utility model discloses a rotation of carousel realizes the sample of syringe, washs and the reciprocating work of sample, has avoided traditional single solution to detect, needs the problem of frequent change sample for detection efficiency has reduced manual operation simultaneously.

Description

A Sampling Device for Leather Inductively Coupled Plasma Mass Spectrometer

technical field

The utility model relates to the technical field of elemental analysis, in particular to a sampling device of a leather inductively coupled plasma mass spectrometer.

Background technique

Leather inductively coupled plasma mass spectrometer is mainly used for trace and ultra-trace multi-element analysis and isotope ratio analysis.

It consists of a plasma generator, spray chamber, torch, quadrupole mass spectrometer and a fast channel electron multiplier. Its working principle is: the atomizer sends the solution sample into the plasma light source, vaporizes at high temperature, dissociates the ionized gas, and collects the ions through the copper or nickel sampling cone to form a molecular beam under a low vacuum of about 133.322 Pa pressure. , and then enter the quadrupole mass spectrometer through the intercepting plate with a diameter of 1-2 mm. After mass separation by the mass filter, it reaches the ion detector. According to the proportional relationship between the detector's count and concentration, the element content or isotope can be measured. Ratio, the solution sample is generally sucked into the body by a special injection needle and then atomized by the nebulizer. The traditional injection needle can only perform a single solution absorption work, and the secondary work can be performed after the solution is manually replaced. .

Utility model content

The purpose of the utility model is to solve the problems in the background technology, and proposes a sampling device for a leather inductively coupled plasma mass spectrometer.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

A sample feeding device for a leather inductively coupled plasma mass spectrometer comprises a body, a motor 1 is fixed at the inner bottom of the body, a turntable is fixed vertically upward at the driving end of the motor 1, and the middle part of the upper side wall of the turntable is The second motor is fixed, and three rotating rods are evenly fixed on the outer wall of the driving end of the second motor, and the first end of each rotating rod away from the second motor is fixed with an arc block one, and the upper side wall of the rotating plate is fixed with three rotating rods. Evenly distributed fixed columns, the outer wall of each fixed column is sleeved with a slide plate, and each connection between the slide plate and the fixed column is provided with a chute, and the outer wall of each of the fixed columns is connected to the slide slot. A compression spring is fixed between the inner walls, an arc block two is fixed at one end of each of the slide plates close to the motor two, and a test tube groove is opened at one end of each of the slide plates away from the arc block two. A linear guide rail is provided, and the sample injection needle located on the upper side of the test tube groove is fixed on the linear guide rail.

Preferably, the upper side wall of the turntable is fixed with two limit posts located outside each slide plate.

Preferably, the turntable is also provided with three evenly distributed collection ports, the collection ports are located between two adjacent sliding plates, and a cleaning box is also arranged in the body, and a liquid pump is arranged in the cleaning box , the liquid pump and the injection needle are connected through a conduit.

Preferably, a one-way valve is installed on the conduit.

Preferably, the inner bottom wall of the body is provided with an outlet, a water outlet pipe is slid inside the outlet, and the upper end of the water outlet pipe is connected with a connecting pipe through a spool, and one end of each connecting pipe away from the spool is respectively connected with the spool. One of the collection ports is connected.

Preferably, the second arc-shaped block is larger than the first arc-shaped block.

Compared with the prior art, the advantages of the sampling device of the leather inductively coupled plasma mass spectrometer are:

1. Start the motor 2 to drive the arc block 1 to rotate until it is in contact with the arc block 2. Squeeze the arc block and the slide plate to the outside to move the test tube tank to the outside of the body, and place the test tube with the solution in the test tube tank. Put multiple samples at a time to avoid frequent replacement;

2. As soon as the motor drives the turntable to rotate at a certain angle until the collection port is located directly under the injection needle, start the liquid pump to pump the clean water in the cleaning box into the injection needle for cleaning, then inject it into the collection port and then discharge through the water outlet pipe. Continue to drive the turntable to rotate until the next test tube groove is located directly under the injection needle, and perform the next sampling and testing work. One work can realize the testing of multiple samples without frequent replacement;

To sum up, the utility model realizes the reciprocating work of sampling, cleaning and sampling of the sampling needle through the rotation of the turntable, avoiding the problem of frequent sample replacement in the traditional single solution detection, speeding up the detection efficiency and reducing the manual operation.

Description of drawings

Fig. 1 is the structural representation of a kind of sampling device of leather inductively coupled plasma mass spectrometer proposed by the utility model;

FIG. 2 is a top view of a turntable in a sample feeding device of a leather inductively coupled plasma mass spectrometer proposed by the utility model.

In the picture: 1 body, 2 motor 1, 3 turntable, 4 collection port, 5 connecting pipe, 6 water outlet pipe, 7 linear guide rail, 8 sampling needle, 9 cleaning box, 10 conduit, 11 motor 2, 12 arc block 1 , 13 slide plate, 14 arc block two, 15 chute, 16 fixed column, 17 compression spring, 18 limit column, 19 test tube slot.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example.

1-2, a sample feeding device for a leather inductively coupled plasma mass spectrometer includes a body 1, a motor-2 is fixed at the inner bottom of the body 1, and a turntable 3 is fixed vertically upward at the driving end of the motor-1. The turntable The middle of the upper side wall of 3 is fixed with the second motor 11, the outer wall of the driving end of the second motor 11 is evenly fixed with three rotating rods, and the end of each rotating rod away from the second motor 11 is fixed with an arc block one 12, the upper part of the turntable 3 is fixed. The side walls are fixed with three evenly distributed fixing columns 16 , the outer wall of each fixing column 16 is sleeved with a sliding plate 13 , and the connection between each sliding plate 13 and the fixing column 16 is provided with a chute 15 , and each fixing column 16 A compression spring 17 is fixed between the outer wall and the inner wall of the chute 15. Further, when the compression spring 17 is fully expanded, the sample injection needle 8 is just located on the upper side of one of the test tube grooves 19 or the collection port 4, and the motor 1 2 Both the stepper motor and the motor two and 11 use stepper motors. When the stepper driver of the stepper motor receives a pulse signal, it drives the stepper motor to rotate a fixed angle in the set direction, which is called "step angle". The rotation is performed step by step at a fixed angle. The angular displacement can be controlled by controlling the number of pulses, so as to achieve the purpose of accurate positioning. Further, the motor one 2 rotates 60° each time to switch between the test tube groove 19 and the collection port 4 located directly under the sampling needle 8, and the motor The second 11 rotates 60° each time, intermittently realizes the contact between the first arc block 12 and the second arc block 14, and realizes the ejection and retraction of the sliding plate 13.

A second arc block 14 is fixed at one end of each sliding plate 13 close to the second motor 11 , the second arc block 14 is larger than the first arc block 12 , and one end of each sliding plate 13 away from the second arc block 14 is provided with a test tube groove 19. Start the motor two 11 to drive the arc block one 12 to rotate to contact with the arc block two 14, squeeze the arc block two 14 and the slide plate 13 to the outside to move the test tube tank 19 to the outside of the body 1, and store the solution. The test tube is placed in the test tube slot 19, the motor 2 11 continues to rotate until the arc block one 12 is not in contact with the arc block two 14, under the reverse elastic force of the compression spring 17, the slide plate 13 moves back to the test tube slot 19, where the sample injection is located. Just below the needle 8, further, an opening matching the size of the sliding plate 13 is formed on the outer wall of the body 1, so as to facilitate the extension of the sliding plate 13.

The interior of the body 1 is provided with a linear guide 7, on which the sample injection needle 8 located on the upper side of the test tube groove 19 is fixed. The linear guide 7 is an existing device for realizing linear reciprocating motion. The injection needle 8 is fixed on the outer wall of the slider, and the linear guide 7 drives the injection needle 8 to move down to absorb the solution and then move back to the body 1 for detection.

Further, the upper side wall of the turntable 3 is fixed with two limit posts 18 located on the outer side of each slide plate 13, and the slide plate 13 is limited by the limit posts 18 to ensure its smooth sliding, and will not cause positional changes due to rotation. offset.

The turntable 3 is also provided with three evenly distributed collection ports 4. The collection ports 4 are located between the two adjacent sliding plates 13. The body 1 is also provided with a cleaning box 9. The cleaning box 9 is provided with a liquid pump. The sampling needles 8 are connected by a conduit 10. A one-way valve is installed on the conduit 10 to prevent the solution from entering the cleaning box 9. The inner bottom wall of the body 1 is provided with an outlet, and a water outlet pipe is slid inside the outlet. 6. The upper end of the water outlet pipe 6 is connected with a connecting pipe 5 through a cross, and the end of each connecting pipe 5 away from the cross is respectively connected with one of the collection ports 4. When the sample injection needle 8 draws the solution in one of the test tubes for detection , the motor 1 2 drives the turntable 3 to rotate at a certain angle until the collection port 4 is located directly below the sample injection needle 8, starts the liquid pump to pump the clean water in the cleaning box 9 into the sample injection needle 8 for cleaning, and then injects it into the collection port 4. The water is discharged through the water outlet pipe 6, and the motor 1 2 continues to drive the turntable 3 to rotate until the next test tube groove 19 is located directly under the sampling needle 8, and the next sampling and detection work is performed.

It is further stated that the above-mentioned fixed connection should be understood in a broad sense unless otherwise specified and limited. For example, it may be welding, gluing, or a conventional means known to those skilled in the art, such as integral molding.

The operating principle of the present utility model is now described as follows:

Start the motor two 11 to drive the arc block one 12 to rotate to contact with the arc block two 14, squeeze the arc block two 14 and the slide plate 13 to move to the outside to the outside of the test tube tank 19, which is located on the outside of the body 1, and store the test tube of the solution. Put it in the test tube slot 19, the motor 2 11 continues to rotate until the arc block one 12 is not in contact with the arc block two 14. Under the reverse elastic force of the compression spring 17, the slide plate 13 moves back to the test tube slot 19 and is located at the sample injection needle 8. The linear guide 7 drives the sampling needle 8 to move down to absorb the solution and then move back to the body 1 for detection. The motor 1 2 drives the turntable 3 to rotate a certain angle until the collection port 4 is located directly under the sampling needle 8, and the liquid is started. The pump pumps the clean water in the cleaning box 9 into the injection needle 8 for cleaning, and then injects it into the collection port 4 and then discharges it through the water outlet pipe 6. The motor 1 2 continues to drive the turntable 3 to rotate to the next test tube slot 19 is located in the injection needle 8. Just below the next sampling test.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (6)

1. A sample introduction device of a leather inductively coupled plasma mass spectrometer comprises a machine body (1) and is characterized in that a first motor (2) is fixed at the inner bottom of the machine body (1), a rotary table (3) is vertically and upwards fixed at the driving end of the first motor (2), a second motor (11) is fixed in the middle of the upper side wall of the rotary table (3), three rotary rods are uniformly fixed on the outer wall of the driving end of the second motor (11), an arc-shaped block I (12) is fixed at one end, far away from the second motor (11), of each rotary rod, three uniformly distributed fixing columns (16) are fixed on the upper side wall of the rotary table (3), a sliding plate (13) is sleeved on the outer wall of each fixing column (16), a sliding groove (15) is formed in the joint of each sliding plate (13) and each fixing column (16), a compression spring (17) is fixed between the outer wall of each fixing column (16) and the inner wall of each sliding groove (15), every slide (13) are close to the one end of motor two (11) and all are fixed with arc piece two (14), every test tube groove (19) have all been seted up to slide (13) one end of keeping away from arc piece two (14), the inside of organism (1) is equipped with linear guide (7), fixed injection needle (8) that are located test tube groove (19) upside on linear guide (7).

2. The sample injection device of the leather inductively coupled plasma mass spectrometer as recited in claim 1, wherein two limiting columns (18) located at the outer side of each sliding plate (13) are fixed on the upper side wall of the rotating disc (3).

3. The sampling device of the leather inductively coupled plasma mass spectrometer according to claim 1, wherein three uniformly distributed collection ports (4) are further formed in the rotary table (3), the collection ports (4) are located between two adjacent sliding plates (13), a cleaning box (9) is further arranged in the machine body (1), a liquid pump is arranged in the cleaning box (9), and the liquid pump is connected with the sampling needle (8) through a conduit (10).

4. A sample introduction device for a leather inductively coupled plasma mass spectrometer according to claim 3, wherein the conduit (10) is provided with a one-way valve.

5. The sample introduction device of the leather inductively coupled plasma mass spectrometer according to claim 3, wherein an outlet is formed in the inner bottom wall of the machine body (1), a water outlet pipe (6) is slid in the outlet, the upper end of the water outlet pipe (6) is connected with the connecting pipes (5) through a four-way joint, and one end, far away from the four-way joint, of each connecting pipe (5) is respectively communicated with one of the collecting ports (4).

6. The sample injection device of the leather inductively coupled plasma mass spectrometer as recited in claim 1, wherein the second arc block (14) is larger than the first arc block (12).

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