CN213239931U

CN213239931U - Positioning fixture for atomic emission spectroscopy test sample

Info

Publication number: CN213239931U
Application number: CN202022426609.9U
Authority: CN
Inventors: 范泽宇; 陆向东; 陈海峰; 邹美娟; 王海
Original assignee: Jiangsu Yonggang Group Co Ltd
Current assignee: Jiangsu Yonggang Group Co Ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-05-18
Anticipated expiration: 2030-10-28

Abstract

The utility model provides a positioning fixture for atomic emission spectroscopy test samples, which comprises an electrode shaft, an upper fixture body, a lower fixture body, a magnet or a magnetic body and a ferromagnetic absorption block, wherein the upper fixture body is arranged on the electrode shaft and can not rotate relative to the electrode shaft, and the lower fixture body is sleeved on the electrode shaft, positioned below the upper fixture body and can rotate relative to the electrode shaft; the magnet or the magnetic body and the ferromagnetic attraction blocks are respectively arranged on the upper clamp body and the lower clamp body in a uniformly distributed manner on the circumference; the upper clamp body is made of a non-ferromagnetic material; and a sample clamping device or an adsorption device is arranged below the lower clamp body. The sample is clamped or adsorbed on the lower clamp body, the rotation of the sample is realized through the relative rotation of the upper clamp body and the lower clamp body, and the accurate positioning of the sample excitation site is realized through the attraction between the magnet or the magnetic body and the ferromagnetic attraction block. The errors of manual operation are reduced, and the accuracy and timeliness of the detection result are improved.

Description

Positioning fixture for atomic emission spectroscopy test sample

Technical Field

The utility model relates to an experiment anchor clamps specifically are a sample anchor clamps for atomic emission spectrometer, an atomic emission spectrometer tests positioning fixture for sample promptly.

Background

The method for measuring the contents of carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel, tungsten, molybdenum, vanadium, aluminum, titanium, copper, niobium, cobalt, boron, zirconium, arsenic, tin, magnesium, lead, calcium, lanthanum, cerium, zinc and tellurium by using spark source atomic emission spectrometry (conventional method) specified in Chinese national standard GB/T4336-2016 [ determination of the contents of multiple elements in carbon steel and medium and low alloy steel ]. When the element contents of the carbon steel and the medium and low alloy steel are measured by the method specified in GB/T4336-2016, the steel smelting sample is generally reduced to be made into a racket-shaped sample, namely the shape of the sample is similar to the shape of a racket; at least 2 excitations per specimen are required during the measurement, the first effective excitation point is at 1/2 radius of the racket-shaped specimen, the second effective excitation point is at 1/2 radius opposite to the first effective excitation point of the specimen, and 4 excitations in diagonal lines are required. In the traditional measurement method, samples are placed manually, so that the positions of a plurality of excitation points are easy to deviate from the standard, and particularly in the rapid analysis in the front of a furnace, the samples detected on line are easy to misplace when the number of the samples is large, so that the positions of the excitation points are wrong or the point positions are overlapped, and the accuracy of the detection result is influenced.

SUMMERY OF THE UTILITY MODEL

Exist not enoughly among the prior art, the utility model provides an atomic emission spectroscopy test positioning fixture for sample for the survey of carbon steel and well low alloy steel multielement content realizes the accurate positioning of several excitation points of racket form sample through positioning fixture, has stopped because the sample excitation point position error that manual operation caused, prevents the artifical error of placing the sample and leading to, improves the accuracy of testing result and manual operation's convenience.

The utility model discloses a realize above-mentioned technical purpose through following technological means.

A positioning clamp for an atomic emission spectroscopy test sample is characterized by comprising an electrode shaft, an upper clamp body, a lower clamp body, a magnet or magnetic body and a ferromagnetic absorption block, wherein the upper clamp body is arranged on the electrode shaft and cannot rotate relative to the electrode shaft, and the lower clamp body is sleeved on the electrode shaft, is positioned below the upper clamp body and can rotate relative to the electrode shaft; the magnet or the magnetic body and the ferromagnetic attraction blocks are respectively and uniformly distributed on the circumference and are arranged on one of the upper clamp body and the lower clamp body; the number of the magnets or the magnetic bodies and the ferromagnetic attraction blocks is four; the upper clamp body is made of a non-ferromagnetic material; and a sample clamping device or an adsorption device is arranged below the lower clamp body.

Further, the magnet or the magnetic body or the ferromagnetic attraction block is arranged on the adjacent end face of the upper clamp body and the lower clamp body.

Further, the absorption device is a magnet or a magnetic body fixed below the lower clamp body.

Further, the lower end face of the lower clamp body is provided with a groove for accommodating a racket-shaped test sample.

Furthermore, the electrode holder also comprises a limiting device for limiting the upper clamp body and the lower clamp body from sliding off the electrode shaft.

Furthermore, the limiting device is a limiting tip cone fixed at the lower end of the electrode shaft through threaded connection, the inner hole of the lower clamp body is in a step shape, and the limiting tip cone is located in the step hole of the lower clamp body.

Further, a spring end cover and a shaft retainer ring which are sleeved on the electrode shaft are arranged above the upper clamp body, the spring is located between the spring end cover and the upper clamp body, and the shaft retainer ring is located above the spring end cover and embedded into a groove in the outer circumference of the electrode shaft.

Furthermore, the cross section of the part of the lower end of the electrode shaft, which is provided with the upper clamp body and the lower clamp body, is oblate, the shape of the inner hole of the upper clamp body is consistent with that of the cross section of the electrode shaft, and the inner hole of the lower clamp body is circular.

The utility model discloses in, set up sample centre gripping or adsorption equipment in the anchor clamps body down, realize the sample and the fixed of anchor clamps body relative position down. The rotation of the sample arranged on the lower clamp body is realized through the relative rotation of the upper clamp body and the lower clamp body, and the accurate positioning of the excitation point is realized through the attraction force between four magnets or magnetic bodies and ferromagnetic attraction blocks which are uniformly distributed in the circumferential direction of the upper clamp body and the lower clamp body. The traditional manual positioning of the sample position is changed into automatic positioning, the excitation point of the sample can be accurately positioned at 1/2 of the radius of the sample, and at most 4 excitation points meet the specification of national standard GB/T4336-.

Drawings

Fig. 1 is a structural diagram of an embodiment of the positioning fixture for atomic emission spectroscopy test samples of the present invention.

Fig. 2 is an exploded view of the embodiment shown in fig. 1.

Fig. 3 is a state view of the positioning jig of the embodiment shown in fig. 1.

Description of reference numerals:

1-electrode shaft, 2-upper fixture body, 3-lower fixture body, 4-ferromagnetic attraction block, 5-first magnet, 6-second magnet, 7-limiting tip cone, 8-spring end cover, 9-shaft retainer ring, 10-spring, 11-upper electrode, 12-support frame, 13-aperture, 14-spark table and 15-sample.

Detailed Description

The invention will be further described with reference to the drawings and the following examples, but the scope of the invention is not limited thereto.

Fig. 1, fig. 2 show that atomic emission spectroscopy test positioning fixture's for sample concrete embodiment, atomic emission spectroscopy test positioning fixture for sample, inhale piece 4 including electrode shaft 1, the last anchor clamps body 2, the lower anchor clamps body 3, magnet or magnetic substance, ferromagnetism.

Two opposite planes are processed at the position of the lower end of the electrode shaft 1, which is assembled with the upper clamp body 2 and the lower clamp body 3, so that the section of the electrode shaft 1 is oblate, the shape of the inner hole of the upper clamp body 2 is consistent with that of the section of the electrode shaft 1, and the upper clamp body 2 sleeved on the electrode shaft 1 and the electrode shaft 1 cannot rotate relatively; and the inner hole of the lower clamp body 3 is circular, so that the lower clamp body 3 sleeved on the electrode shaft 1 can rotate relative to the electrode shaft 1.

The ferromagnetic attraction blocks 4 are arranged on the lower end face of the upper clamp body 2, the magnets or the magnetic bodies are arranged on the upper end face of the lower clamp body 3, the number of the ferromagnetic attraction blocks 4, the number of the magnets or the number of the magnetic bodies are four, and the ferromagnetic attraction blocks are respectively and uniformly distributed on the upper clamp body 2 and the lower clamp body 3 in the circumferential direction. In this embodiment, the magnet or magnetic body is the first magnet 5.

And a sample clamping device or an adsorption device is arranged below the lower clamp body 3 and is used for fixing a sample to be tested. The sample is not easy to fall off, and the position is centered and does not slide freely. In order to achieve coaxiality of the sample with the electrode shaft 1, a groove for accommodating the racket-shaped sample is provided on the lower end surface of the lower clamp body 3, and the absorbing device is a magnet or a magnetic second magnet 6 fixed below the lower clamp body 3. The second magnet 6 may be replaced by an electromagnet.

The lower clamp body 3 is positioned below the upper clamp body 2, and the upper clamp body 2 is made of non-ferromagnetic materials. When the lower chuck body 3 is rotated, the lower chuck body 3 rotates relative to the upper chuck body 2. When the magnet or the magnetic body on the end surface of the lower clamp body 3 is overlapped with the ferromagnetic attraction block 4 on the upper clamp body 2, the magnet or the magnetic body and the ferromagnetic attraction block generate magnetic attraction, namely, the preset rotation angle is reached, namely, the magnet or the magnetic body is rotated by 90 degrees from the first excitation point.

When the positioning clamp is applied, as shown in fig. 3, the positioning clamp is fixed on a support frame 12 through a cantilever, an electrode shaft 1 is connected with an upper electrode 11, the cantilever is rotated to an excitation position of an aperture 13 and a spark table 14, a limit V block of the spark table is preset, and the excitation hole is ensured to be aligned to 1/2 of the radius of a sample clamped by a clamp body. After the first excitation point is excited, the lower clamp body 3 is rotated to continue exciting the second excitation point, and the 4 points of excitation are ensured to be at the radius 1/2 of the sample. Convenient quick location effectively improves efficiency and degree of accuracy.

Because in this embodiment, the cross-section of the lower part of the electrode shaft 1 is oblate, as shown in fig. 2, the upper clamp body 2 can reciprocate in the axial direction of the electrode shaft 1, in order to prevent the upper clamp body 2 and the lower clamp body 3 from slipping off the electrode shaft 1, the lower end of the electrode shaft 1 is provided with a limiting tip cone 7 as a limiting device, the limiting tip cone 7 is fixed at the lower end of the electrode shaft 1 through threaded connection, the ladder-shaped inner hole of the lower clamp body 3 is provided, the limiting tip cone 7 is located in the ladder-shaped hole of the lower clamp body 3, and the axial positioning is realized by the ladder that the limiting tip cone 7 and the ladder-shaped hole of the lower clamp body 3 go out. Meanwhile, a spring 10, a spring end cover 8 and a shaft retainer ring 9 which are sleeved on the electrode shaft 1 are arranged above the upper clamp body 2, the spring 10 is positioned between the spring end cover 8 and the upper clamp body 2, and the shaft retainer ring 9 is positioned above the spring end cover 8 and is embedded into a groove on the outer circumference of the electrode shaft 1. By utilizing the axial positioning of the shaft retainer ring 9 and based on the elastic contraction and expansion elastic action of the spring 10, the upper clamp body 2, the lower clamp body 3 and the sample 15 at the lower end of the lower clamp body 3 can be lifted upwards under the action of upward thrust, and after the upper clamp body and the lower clamp body are separated from the spark table 14 at the lower part of the sample 15, the lower clamp body 3 is rotated again, so that the sample 15 is prevented from wearing the spark table 14. When rotated to a suitable excitation potential, the sample 15 returns to the initial position under the spring force of the spring 10, and is attached to the spark stand again.

The assembling structure between the upper clamp body 2 and the electrode shaft 1, the lower clamp body 3 and the electrode shaft 1, and the upper clamp body 2 and the lower clamp body 3 can adopt other modes.

The ferromagnetic attraction block 4, the magnet or the magnetic body can be exchanged between the upper clamp body 2 and the lower clamp body 3, the installation position can be changed, and the two can be arranged at an interval of 90 degrees only by ensuring that the two correspond in position.

The embodiment is a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment, and any obvious improvement, replacement or modification which can be made by those skilled in the art without departing from the essence of the present invention belongs to the protection scope of the present invention.

Claims

1. The positioning clamp for the atomic emission spectroscopy test sample is characterized by comprising an electrode shaft (1), an upper clamp body (2), a lower clamp body (3), a magnet or magnetic body and a ferromagnetic absorption block (4), wherein the upper clamp body (2) is arranged on the electrode shaft (1) and cannot rotate relative to the electrode shaft (1), and the lower clamp body (3) is sleeved on the electrode shaft (1), is positioned below the upper clamp body (2) and can rotate relative to the electrode shaft (1); the magnet or the magnetic body and the ferromagnetic attraction blocks (4) are respectively and uniformly distributed on the circumference and are arranged on one of the upper clamp body (2) and the lower clamp body (3); the number of the magnets or magnetic bodies and the ferromagnetic attraction blocks (4) is four; the upper clamp body (2) is made of a non-ferromagnetic material; and a sample clamping device or an adsorption device is arranged below the lower clamp body (3).

2. The positioning jig for atomic emission spectroscopy test specimens according to claim 1, wherein the magnet or magnetic body, ferromagnetic attraction block (4) is on the adjacent end surfaces of the upper and lower jig bodies (2, 3).

3. The positioning jig for atomic emission spectroscopy test specimens according to claim 1, characterized in that the adsorption means is a magnet or a magnetic body fixed under the lower jig body (3).

4. The positioning jig for atomic emission spectroscopy test specimens as set forth in claim 3, wherein the lower end surface of the lower jig body (3) has a groove for receiving a racket-shaped specimen.

5. The positioning jig for the atomic emission spectroscopy test specimen according to claim 1, further comprising a limiting means for limiting the upper and lower jig bodies (2, 3) from sliding off the electrode shaft (1).

6. The positioning fixture for the atomic emission spectroscopy test sample according to claim 5, wherein a spring (10), a spring end cover (8) and a shaft retainer ring which are sleeved on the electrode shaft (1) are arranged above the upper fixture body (2), the spring (10) is positioned between the spring end cover (8) and the upper fixture body (2), and the shaft retainer ring is positioned above the spring end cover (8) and is embedded into a groove on the outer circumference of the electrode shaft (1).

7. The positioning fixture for the atomic emission spectroscopy test sample according to claim 6, wherein the cross section of the portion of the lower end of the electrode shaft (1) where the upper clamp body (2) and the lower clamp body (3) are assembled is oblate, the inner hole of the upper clamp body (2) is consistent with the cross section of the electrode shaft (1), and the inner hole of the lower clamp body (3) is circular.

8. The positioning fixture for the atomic emission spectroscopy test sample according to claim 5, wherein the limiting device is a limiting tip cone (7) fixed at the lower end of the electrode shaft (1) through threaded connection, the inner hole of the lower clamp body (3) is stepped, and the limiting tip cone (7) is located in the stepped hole of the lower clamp body (3).