Novel melting point determination device
A new type of technology for melting point determination, applied in the investigation stage/state change, etc., can solve problems such as inaccurate melting point determination, temperature fluctuations in the heating vessel tube, flow, etc.
Pending Publication Date: 2017-05-24
RIZHAO ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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Problems solved by technology
[0004] However, its electric heating element heats the heating container, but the external air of the heating container will flow, especially the external cold air will enter the heating container, which will cause fluctuations in the temperature in the heating container tube, resulting in inaccurate determination of the melting point
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[0023] Embodiments of the present invention are described in detail below, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0024] A novel melting point measuring device according to an embodiment of the present invention will be described below with reference to the accompanying drawings. figure 1 It is a structural schematic diagram of a novel melting point measuring device according to an embodiment of the present invention. It comprises an outer sleeve, an inner sleeve, a container plug 5, a sealing piston 6 and a heating element.
[0025] The outer casing includes an upper outer casing 1 at an upper end and a lower outer casing 2 at a lower end, and the diameter of the upper outer casing 1 is larger ...
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The invention discloses a novel melting point determination device which comprises an outer sleeve, wherein the upper and lower ends of the outer sleeve are both provided with an opening; the outer sleeve comprises an upper outer sleeve and a lower outer sleeve; the lower end of an inner sleeve is closed, and an opening is formed in the upper end; the inner sleeve comprises an upper inner sleeve and a lower inner sleeve; the upper inner sleeve is contained in the upper outer sleeve; a gap is reserved between the upper inner sleeve and the upper outer sleeve; the lower inner sleeve is sleeved in the lower outer sleeve, and the outer diameter of the lower inner sleeve is consistent with the inner diameter of the lower outer sleeve; a container plug is arranged at the opening of the inner sleeve; a sealing piston is sleeved on the outer side of the upper end of the upper inner sleeve and is in slip connection with the upper outer sleeve; and the device also comprises a heating element for heating. In the embodiment, a sample melting point is determined by an air bath-hot bath way. Air in the outer sleeve is kept relatively sealed and can flow out only from the lower end of the outer sleeve, so that the temperature fluctuation of air in the inner sleeve can be avoided, and the determination accuracy is improved.
Description
technical field [0001] The invention relates to the technical field of melting point determination, in particular to a novel melting point determination device. Background technique [0002] The capillary method is commonly used for melting point determination. The procedure is to fill the crushed sample into the capillary, install the capillary at the precise position of the thermometer, and then fix it at the center of the b-shaped tube. Determination of the initial melting to full melting of the sample by heating and rising the temperature. [0003] Patent application number 01252620.7 discloses an electric heating melting point measuring instrument, which includes a supporting container and a heating container arranged inside, an electric heating element is installed in the space between the two containers, and a container plug is arranged at the opening of the heating container. The plug is fitted with a thermometer. The supporting container and the heating container ...
Claims
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Login to View More IPC IPC(8): G01N25/04
CPCG01N25/04Y02E30/30
Inventor 杨立明
Owner RIZHAO ENTRY EXIT INSPECTION & QUARANTINE BUREAU