CN215374763U

CN215374763U - Terahertz porous test sample preparation mold

Info

Publication number: CN215374763U
Application number: CN202022596554.6U
Authority: CN
Inventors: 张彤; 黄昊翀; 高华; 张自力; 郑志远
Original assignee: China University of Geosciences Beijing
Current assignee: China University of Geosciences Beijing
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-12-31
Anticipated expiration: 2030-11-11

Abstract

The utility model discloses a terahertz porous test sample preparation mold which comprises a square base with a square cylindrical plug, a square cylindrical mold with four cylindrical holes in the interior, a square upper pressure head with four cylindrical plugs and eight cylindrical gaskets with two parallel surfaces. This porous test system appearance mould of terahertz compares with current system appearance mould, can make a plurality of samples of the same thickness with different powder material to make by survey sample thickness unified, make the sample information that records more accurate and effective, so that be used for terahertz to test data processing, and make system appearance speed improve by a wide margin.

Description

Terahertz porous test sample preparation mold

Technical Field

The utility model relates to the technical field of terahertz test, in particular to a terahertz porous test sample preparation mold.

Background

Terahertz (THz) refers to the region of electromagnetic radiation from 0.1-l0THz, a frequency between millimeter waves and infrared light. The terahertz wave has a plurality of unique spectrum characteristics due to the special position of the terahertz wave on an electromagnetic spectrum, and is particularly characterized in that the terahertz wave has low photon energy, high safety and large bandwidth, has fingerprint absorption characteristics on a plurality of substances, and can be used for substance component testing and calibration.

At present, the sample that is used for terahertz technical test now, its preparation process is mostly the preforming operation, the sample that the preforming mould that traditional preforming operation used made is the cylindrical sample piece of a two sides parallel, however, when the sample of different materials, nature needs to be tested, even under certain circumstances of the sample quality that adds, under the same pressure, the sample thickness that still can not control at every turn extrusion is unanimous, can lead to the terahertz wave time domain waveform that detects through signal detector to appear the difference in the test, and can not confirm that the difference is from sample self or sample thickness, because the thickness that the difference of two kinds and more than two kinds of sample self nature leads to is not unified, can't solve through control quality and pressure invariant. Therefore, the difficulty is caused to the later data processing and analysis, and technical innovation is carried out on the basis of the existing test sample preparation mould aiming at the situation.

Disclosure of Invention

The utility model aims to provide a terahertz porous test sample preparation mold to solve the problem of preparation of a test sample for the terahertz technology in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: the square base with the square cylindrical plug is provided with a square cylindrical die with four cylindrical holes inside, two cylindrical gaskets with two parallel surfaces are respectively arranged in the four cylindrical holes inside the square cylindrical die with the four cylindrical holes inside, samples are filled in every two cylindrical gaskets with two parallel surfaces, and the square upper pressure head with the four cylindrical plug can penetrate through the inside of the square cylindrical die with the four cylindrical holes inside.

The utility model has the following advantages:

preferably, the square base with the square cylindrical plug is connected with the square cylindrical mold with the four cylindrical holes through the square cylindrical plug of the square base with the square cylindrical plug, the upper surface of the square base with the square cylindrical plug is tightly attached to the lower surface of the inner groove of the square cylindrical mold with the four cylindrical holes inside, and the central axis of the square base with the square cylindrical plug coincides with the central axis of the square cylindrical mold with the four cylindrical holes inside.

Preferably, the diameter of the cylindrical gasket with two parallel surfaces is matched with the diameter of the inner four cylindrical holes of the square cylindrical mold with the four cylindrical holes.

Preferably, the square cylindrical mold with the four cylindrical holes and the two parallel cylindrical spacers are parallel to each other, the upper surfaces and the lower surfaces of the eight two parallel cylindrical spacers are parallel, and a sample is filled between every two parallel cylindrical spacers.

Preferably, the four cylindrical plugs of the square upper pressure head with the four cylindrical plugs penetrate through the square cylindrical die with the four cylindrical holes from top to bottom.

Compared with the prior art, the utility model has the following beneficial effects:

1. through the square base that has the square column stopper, the inside square column form mould that has four cylinder holes and the setting of pressure head on the square that has four cylinder stoppers, can keep the absolute stability degree of whole device in the use to the square base that has the square column stopper and the inside fixed mode operation of being connected between the square column form mould that has four cylinder holes get up comparatively simple swiftly, convenient to use person's operation.

2. Through the setting of the square column form mould that inside has four cylinder holes, the cylindrical gasket of eight two sides parallels, four sample pieces that thickness is the same can be made with the sample under the same pressure condition to the system appearance mould, can eliminate the problem that the thickness is unified and brings in the experiment to make the sample thickness of being surveyed unified, make the sample information that records more accurate and effective, so that be used for terahertz test data to handle.

3. Through the arrangement of the upper pressure head with the four cylindrical plugs, the square cylindrical mold with the four cylindrical holes in the interior and the eight cylindrical gaskets with two parallel surfaces, compared with a terahertz wave time domain signal obtained after a sample sheet is pressed by a traditional mold for testing, the difference of the terahertz wave time domain signal during testing caused by the thickness difference of the sample prepared by the sample preparation mold provided by the utility model is obviously eliminated.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the main, side and top structures of the present invention;

in the figure: (1) a square upper ram having a four cylindrical plug; (2) a square column shaped die with four column shaped holes inside; (3) a square base having a square cylindrical plug; (4) two cylindrical gaskets with two parallel surfaces; (5) and (3) sampling.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

Referring to fig. 1-2, the present invention provides a technical solution: the terahertz test sample preparation mold comprises a square base (3) with a square cylindrical plug and a square upper pressure head (1) with a square cylindrical plug inside, wherein the square base (3) with the square cylindrical plug is provided with the square cylindrical mold (2) with the square cylindrical hole inside, two cylindrical gaskets (4) with two parallel surfaces are arranged below the inner part of each cylindrical hole of the square cylindrical mold (2) with the square cylindrical hole inside, the square base (3) with the square cylindrical plug and the square cylindrical mold (2) with the square cylindrical hole inside are connected through a square plunger, the upper surface of the square base (3) with the square cylindrical plug and the lower surface of a groove in the square cylindrical mold (2) with the square cylindrical hole inside are tightly attached, and the central axis of the square base (3) with the square cylindrical plug and the central axis of the square cylindrical mold (2) with the square cylindrical hole inside are overlapped, the diameter size of the two cylindrical gaskets (4) with two parallel surfaces is matched with the diameter size of the internal cylindrical hole of the square cylindrical mould (2) with four cylindrical holes inside, and a square column shaped mould (2) with four column holes inside and a column shaped gasket (4) with two parallel surfaces are parallel to each other, the absolute stability degree of the whole device in the using process can be kept through the arrangement of a square base (3) with a square cylindrical plug, a square cylindrical die (2) with a square cylindrical hole inside and a square upper pressure head (1) with a square cylindrical plug, and the connection and fixation mode between the square base (3) with the square cylindrical plug and the square cylindrical mould (2) with the four cylindrical holes inside is simple and rapid to operate, is convenient for the operation of a user, meanwhile, a square upper pressure head (1) with four cylindrical plugs can be used for performing directional movement on a cylindrical gasket (4) with two parallel surfaces in the pressing process;

inside square column form mould (2) that has four cylinder holes inside runs through the four cylinder stopper that has pressure head (1) on the square of four cylinder stoppers, and inside two liang of cylindrical gasket (4) that have eight two sides parallels are located the four cylinder holes inside of the square column form mould (2) that have four cylinder holes inside, inside square column form mould (2) that have four cylinder holes, the setting of eight two sides parallels cylindrical gasket (4), compare with current system appearance mould, porous system appearance mould can make a plurality of samples of the same kind of thickness with different sample (5), thereby make by survey sample thickness unified, the sample information that makes the survey is more accurate and effective, so that be used for terahertz test data to handle, and make system appearance speed improve by a wide margin.

The square upper pressure head (1) with the four cylindrical plugs sequentially penetrates through the inside of a square cylindrical mold (2) with four cylindrical holes from top to bottom, and the square upper pressure head (1) with the four cylindrical plugs is perpendicular to the surfaces of two parallel cylindrical gaskets (4), wherein the operation flow is as follows:

a) a square base (3) with a square cylindrical plug is arranged in a square cylindrical mould (2) with a quadrangular cylindrical hole inside;

b) putting four cylindrical gaskets (4) with two parallel surfaces into four cylindrical holes of a square cylindrical mold (2) with four cylindrical holes inside;

c) putting four samples (5) to be pressed on four cylindrical gaskets (4) with two parallel surfaces;

d) then four cylindrical gaskets (4) with two parallel surfaces are vertically placed into four cylindrical holes of a square cylindrical mold (2) with four cylindrical holes inside;

e) the square upper pressure head (1) with the four-cylinder plug is inserted and then placed in a tablet press for tabletting.

Through the arrangement of the square cylindrical mold (2) with the four cylindrical holes inside, the square upper pressure head (1) with the four cylindrical plugs and the cylindrical gasket (4) with the two parallel surfaces, compared with a terahertz wave time domain signal obtained after a parallel sample piece is pressed by a traditional mold for testing, the difference of the terahertz wave time domain signal for testing caused by the thickness difference of the sample prepared by the sample preparation mold provided by the utility model is obviously eliminated, and the change of the absorption coefficient of the sample on a frequency domain spectrum is more stable and regular.

The working principle is as follows: when the terahertz test sample preparation mold is used, firstly, a sample powder material to be tested is placed in an agate mortar and ground to a specified particle size, and then powder with a corresponding mass is weighed and placed in weighing paper for preparation and tabletting operation;

taking out all die parts cleaned by wiping, firstly correctly installing a square base (3) with a square cylindrical plug into a square cylindrical die (2) with a quadrangular cylindrical hole inside, then respectively placing four cylindrical gaskets (4) with two parallel surfaces into the quadrangular cylindrical hole inside the square cylindrical die (2) with the quadrangular cylindrical hole by using tweezers, paying attention to enable a panel polishing surface to be upward, then carefully pouring a prepared sample into the die to prevent the sample from spilling outside, shaking up the sample, then respectively placing the other four cylindrical gaskets (4) with two parallel surfaces into the quadrangular cylindrical hole inside the square cylindrical die (2) with the quadrangular cylindrical hole, paying attention to enable the polishing surface to be downward, finally inserting a square upper pressure head (1) with the quadrangular cylindrical plug, and moving the square upper pressure head to a tablet press for tabletting;

the thickness of each sample piece obtained is equal to the thickness of the sample piece.

Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.

Claims

1. The utility model provides a terahertz is porous tests system appearance mould now, is including pressure head (1) on the square that has four cylinder stopper, inside square column shape mould (2) that have four cylinder holes, square base (3) that have square column shape stopper and eight two parallel cylindrical gasket (4), its characterized in that: the square base (3) with the square cylindrical plug is provided with a square cylindrical mold (2) with four cylindrical holes inside, the square cylindrical mold (2) with the four cylindrical holes inside is provided with four parallel cylindrical holes inside, two cylindrical gaskets (4) with two parallel surfaces can be arranged inside each cylindrical hole, and a sample (5) is placed in the hollow part of each two cylindrical gaskets (4) with two parallel surfaces.

2. The terahertz porous test sample preparation mold according to claim 1, characterized in that: the square base (3) with the square cylindrical plug is matched with the square cylindrical mold (2) with the square cylindrical hole inside through the square plunger on the upper portion of the square base (3) with the square cylindrical plug, the upper surface of the square base (3) with the square cylindrical plug is tightly attached to the lower surface of the inner groove of the square cylindrical mold (2) with the square cylindrical hole inside, and the central axis of the square base (3) with the square cylindrical plug is coincided with the central axis of the square cylindrical mold (2) with the square cylindrical hole inside.

3. The terahertz porous test sample preparation mold according to claim 1, characterized in that: the diameter size of the eight cylindrical gaskets (4) with two parallel surfaces is the same as that of the four cylindrical holes in the square cylindrical mold (2) with the four cylindrical holes in the square cylindrical mold, and the square cylindrical mold (2) with the four cylindrical holes in the square cylindrical mold is parallel to the cylindrical gaskets (4) with two parallel surfaces.

4. The terahertz porous test sample preparation mold according to claim 1, characterized in that: the upper and lower surfaces of the eight cylindrical gaskets (4) with two parallel surfaces are parallel, and samples (5) are placed in the hollow parts of every two cylindrical gaskets (4) with two parallel surfaces.

5. The terahertz porous test sample preparation mold according to claim 1, characterized in that: the square upper pressure head (1) with the four cylindrical plugs penetrates through the square cylindrical die (2) with the four cylindrical holes from top to bottom, and the four cylindrical plugs of the square upper pressure head (1) with the four cylindrical plugs are perpendicular to the surfaces of the cylindrical gaskets (4) with two parallel surfaces.