Modified type static inhalation toxicant exposure cabinet

Abstract

The invention discloses a modified static inhaled toxicant exposure cabinet, comprising cabinet body (1), heater (10)and fan (9)set in the cabinet body (1), which is characterized in that the cabinet body (1)is a cylinder container; sample volatilizing box (6)is set under the cover plate (5); the volatilizing box (6)is a tetrahedron; evaporating dish (8)is set at the bottom and the heater (10)is set at the bottom of evaporating dish (8); the fan (9)is set at one end of volatilizing box (6)and oblique flow guide plate (11)is set at the other end; air outlet port (7)is set near the lower end of flow guide plate (11). The invention not only can improve concentration uniformity of test chemical in cabinet but also shorten testing time. It also saves electric energy and protects circumstance.

Description

Technical field: [0001] The invention relates to a diagnostic instrument, in particular to a poisoning cabinet, in particular a static inhalation poisoning cabinet, which is suitable for establishing inhaled poisoning animal models or studying the toxicology of inhaled poisoning by exogenous chemicals test. Background technique: [0002] There are two main ways to establish animal models of inhalation exposure, one is static inhalation exposure, and the other is dynamic inhalation exposure. Static inhalation poisoning is to place an experimental animal in a closed container with a certain volume, add a certain amount of volatile liquid test chemical or a certain volume of gaseous test chemical, and form the required content in this closed container. The air environment with the concentration of the test chemical poisons the animals. Dynamic inhalation of poison is to place the experimental animal in an air-flowing poison cabinet. The poison cabinet is equipped with a power system...

AI Technical Summary

Problems solved by technology

Although this patented technology speeds up the volatilization speed of the test chemical and improves the concentration uniformity of the test chemical in the cabinet to a certain extent, it still has the following deficiencies: First, the cabinet is a cuboid, and the air circulation in the cabinet is easy There is a dead angle, which affects the concentration uniformity of the test chemical in the cabinet. The designer tried to make up for it by setting two diagonal fans, but the effect is still not very satisfactory, and material resources are wasted; the second is to place the test chemical The distance between the heating device and the fan is too far, and there is no organic connection between the two. The gas generated when the test chemical is heated and volatilized cannot be dispersed in the entire cabinet in a timely and effective manner, which is not conducive to the immediate and rapid volatilization of the test chemical; 3. It is necessary to add the test chemical substances before closing the cabinet door, which will cause a small amount of toxic test chemical substances to leak out, which will not only affect the accuracy of the test results, but also pollute the laboratory environment and surrounding environment, and endanger the health of operators. The fourth is that the heating power of the heating device is fixed, and the heating power cannot be adjusted according to the difficulty of volatilization of the tested chemical substance so that it can be completely volatilized within the predetermined time.

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