Target manufacturing pen

Abstract

The utility model provides a target making pen which comprises a pen point, the whole pen point is of a conical barrel structure, a sample outlet is formed in the tip of the pen point, an opening is formed in the bottom of the pen point, and a disc-shaped round hole filtering net piece is packaged at the position, close to the opening, of the pen point; the whole pen container is cylindrical, two ends of the pen container are opened, and one end of the pen container is connected with the opening of the pen point; the piston rod is mounted in the pen container from an opening in one end, far away from the pen point, of the pen container. When the target making pen is used, a test sample is placed in the pen container of the target making pen, the test sample with the appropriate size is placed on the double-faced adhesive tape through the pen point by pushing the piston rod, target making is neat and rapid, the sample is not prone to falling off, and the target making pen is suitable for target making of the test sample in LA-ICP-MS.

Description

Technical Field

[0001] The utility model relates to the technical field of target making of laser ablation plasma mass spectrometry, in particular to a target making pen. Background Art

[0002] Laser ablation plasma mass spectrometry (LA-ICP-MS) is used for micro-area element and isotope analysis, and plays a very important role in earth science research. Before testing, the test samples of LA-ICP-MS need to be made into targets or light sheets. Currently, the target is made by selecting a test sample with a fine needle under a binocular stereo microscope and placing it on the prepared double-sided tape. Then the second particle is selected and the above operation is repeated to reach the required number of targets. The whole process is manual selection and placement of each particle. The selection and placement process requires the continuous movement of the double-sided tape and sample particles. This process is easily interfered by human factors, resulting in the loss of samples, untidy and unsightly placement, and is extremely time-consuming and eye-consuming for the participants. Summary of the invention

[0003] In view of the deficiencies in the prior art, the utility model provides a target making pen. A test sample is placed in the pen barrel of the target making pen, and a test sample of a suitable size is placed on the double-sided tape through the pen tip by pushing a piston rod. Target making is neat and fast, and the sample is not easy to fall off. The utility model is suitable for target making of test samples in LA-ICP-MS.

[0004] The technical solution adopted to achieve the above-mentioned purpose of the utility model is:

[0005] A target making pen, comprising:

[0006] The pen tip is in a conical cylindrical structure as a whole, with a sample outlet at the tip, an opening at the bottom of the pen tip, and a circular filter mesh in the shape of a disc and close to the opening.

[0007] The pen holder is cylindrical in shape and has openings at both ends, one end of the pen holder is connected to the opening of the pen tip;

[0008] The piston rod is installed in the pen barrel from the opening of one end of the pen barrel away from the pen tip.

[0009] The diameter of the sample outlet is A, the hole diameter of the circular hole filter mesh is B, and A=B+0.050mm.

[0010] The hole diameter of the circular hole filter mesh is 0.075mm, 0.100mm, 0.150mm or 0.200mm.

[0011] The pen tip and the pen barrel are a detachable connection structure.

[0012] The pen tip is located outside the circular hole filter mesh and is provided with an internal thread on the inner wall of the pen barrel, and the pen barrel is provided with a matching external thread. The pen tip and the pen barrel are connected through the internal thread and the external thread.

[0013] The round hole filter mesh is made of metal material.

[0014] A pen holder is equipped with a plurality of pen tips, and different pen tips are equipped with circular hole filter mesh sheets with different hole diameters.

[0015] A limiting step is arranged on the inner wall of the pen tip near the opening, and the round hole filter mesh is glued and fixed on the limiting step.

[0016] Compared with the prior art, the target making pen provided by the utility model has the following advantages: (1) In the utility model, the test sample is placed in the pen barrel of the target making pen, and by pushing the piston rod, the test sample of appropriate size is placed on the double-sided tape through the pen tip, and the sample is made neatly and quickly, and the sample is not easy to fall off.

[0017] (2) The utility model provides a round-hole filter mesh at the tip of the pen, which can brake and select test samples of the required size without manual selection.

[0018] (3) In the present invention, the diameter of the sample outlet on the same pen tip is 0.050 mm larger than the hole diameter of the round hole filter mesh. The test samples filtered by the round hole filter mesh can be placed one by one from the sample outlet onto the double-sided tape, which is convenient for target making.

[0019] (4) In the utility model, a pen holder is equipped with multiple pen tips, and different pen tips are equipped with circular filter meshes with different hole diameters. Different pen tips can be selected according to the different sizes of sample particles, and the application range is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A structural diagram of the target making pen provided by the utility model;

[0021] Figure 2 It is a structural schematic diagram of the pen tip in the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the circular hole filter mesh in the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the pen holder in the utility model;

[0024] In the figure: 1-pen tip, 11-sample outlet, 12-limiting step, 2-pen barrel, 3-piston rod, 4-round hole filter mesh, 5-internal thread, 6-external thread. DETAILED DESCRIPTION

[0025] The utility model is described in detail below with reference to the accompanying drawings.

[0026] The structure of the target making pen provided by the utility model is as follows Figure 1 As shown, the target pen comprises a pen tip 1, a pen barrel 2 and a piston rod 3.

[0027] The pen tip is a conical cylindrical structure as a whole, and a sample outlet 11 is opened at the tip of the pen tip. The diameter of the sample outlet is A, and the bottom of the pen tip (the end away from the sample outlet) is an opening. Figure 2 As shown, the pen tip in the present application is similar to the pen tip of a writing pen.

[0028] In this embodiment, a circular hole filter mesh 4 is encapsulated near the opening of the pen tip. The structure of the circular hole filter mesh is as follows: Figure 3 As shown, the diameter of the circular filter mesh matches the diameter of the inner wall of the pen tip near the opening, so that the four sides of the circular filter mesh are close to the inner wall of the pen tip. Preferably, the circular filter mesh is made of metal, such as iron, copper, stainless steel, etc. Preferably, a limit step 12 is set on the inner wall of the pen tip near the opening, and the circular filter mesh is glued and fixed on the limit step. Figure 2 , ensuring the installation stability of the round hole filter mesh.

[0029] In this embodiment, the hole diameter of the circular hole filter mesh is B. Specifically, according to the different sizes of sample particles, the hole diameter of the circular hole filter mesh can be selected to be 0.075mm, 0.100mm, 0.150mm or 0.200mm. At this time, the diameter A of the sample outlet always maintains A=B+0.050mm. That is, the diameters of the sample outlets of the pen tips equipped with circular hole filter meshes with different hole diameters are also different.

[0030] The pen holder is cylindrical in shape and has openings at both ends. Figure 4 As shown, the pen barrel is similar to a writing pen, except that the writing pen barrel has only one end that is open. One end of the pen barrel is connected to the opening of the pen tip, and specifically, the pen tip and the pen barrel are a detachable connection structure. Preferably, the pen tip is located outside the circular hole filter mesh and is provided with an internal thread 5 on the inner wall of the pen barrel, and the pen barrel is provided with a matching external thread 6, and the pen tip and the pen barrel are connected through the internal thread and the external thread.

[0031] In this embodiment, a pen holder is equipped with multiple pen tips, and different pen tips are equipped with round hole filter meshes with different hole diameters. Different pen tips can be selected according to different sample particle sizes.

[0032] The piston rod is installed in the pen barrel from an opening at one end of the pen barrel away from the pen tip, and moves in the pen barrel, thereby changing the pressure in the pen barrel.

[0033] The method for using the target making pen provided by the utility model is as follows: estimate the particle size of the sample, select a round hole filter mesh of a suitable size and a pen tip of a sample outlet, and connect the pen tip and the pen barrel. Pull out the piston rod and pour the sample to be made into the pen barrel, then push the piston rod and slowly push the sample from top to bottom, the sample will pass through the round hole filter mesh at the pen tip to filter the sample of suitable size into the pen tip, and then the sample in the pen tip will appear one by one through the sample outlet and fall on the double-sided tape. After the target making is completed, pull out the piston rod and recycle the excess sample into the sample bag.

Claims

1. A target pen, characterized in that: The target making pen comprises: The pen tip is in a conical cylindrical structure as a whole, with a sample outlet at the tip, an opening at the bottom of the pen tip, and a circular filter mesh in the shape of a disc and close to the opening. The pen holder is cylindrical in shape and has openings at both ends, one end of the pen holder is connected to the opening of the pen tip; The piston rod is installed in the pen barrel from the opening of one end of the pen barrel away from the pen tip.

2. The target pen according to claim 1, characterized in that: The diameter of the sample outlet is A, the hole diameter of the circular hole filter mesh is B, and A=B+0.050mm.

3. The target pen according to claim 1, characterized in that: The hole diameter of the circular hole filter mesh is 0.075mm, 0.100mm, 0.150mm or 0.200mm.

4. The target pen according to claim 1, characterized in that: The pen tip and the pen barrel are a detachable connection structure.

5. The target pen according to claim 4, characterized in that: The pen tip is located outside the circular hole filter mesh and is provided with an internal thread on the inner wall of the pen barrel, and the pen barrel is provided with a matching external thread. The pen tip and the pen barrel are connected through the internal thread and the external thread.

6. The target pen according to claim 1, characterized in that: The round hole filter mesh is made of metal material.

7. The target pen according to claim 1, characterized in that: A pen holder is equipped with a plurality of pen tips, and different pen tips are equipped with circular hole filter mesh sheets with different hole diameters.

8. The target pen according to claim 1, characterized in that: A limiting step is arranged on the inner wall of the pen tip near the opening, and the round hole filter mesh is glued and fixed on the limiting step.

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