Constant temperature water bath

Abstract

The invention discloses a constant temperature water bath which comprises a box body, a water tank and a control box, wherein a body wall of the box body is set as a tightly adhered three-layer structure and sequentially comprises an inner stainless steel layer of which the outer side is sawtooth-shaped, a polyurethane layer and an outer stainless steel layer of which the inner side is sawtooth-shaped from the interior to exterior; a water supplementing tank is arranged in the box body and positioned outside the water tank; a heating element is arranged at the bottom of the water supplementing tank; the water supplementing tank and the water tank are communicated through a water pipe on which a control valve is arranged; liquid level controllers are arranged in the water supplementing tank and the water tank; the heating element, the control valve and the liquid level controller are controlled by the control box; and a drainage pipe extending out of the box body is arranged at the bottom of the water tank. According to the constant temperature water bath disclosed by the invention, containers of different shapes in the water tank can be stabilized, the automatic water supplementing device is arranged, the box body has thermal-insulating and energy-saving effects, and the constant temperature water bath has the advantages of short heating time, uniform water temperature, high experimental result accuracy, wide application range, excellent anti-scale performance, high safety performance and the like and is excellent in usability and worthy of wide popularization.

Description

technical field [0001] The invention relates to the technical field of laboratory equipment, in particular to a constant temperature water bath. Background technique [0002] The water bath is mainly used for distillation, drying, concentration and warm soaking of chemicals or biological products in the laboratory. It can also be used for constant temperature heating and other temperature tests. It is an essential tool for laboratories in the fields of food, biology, aquatic products, environmental protection, and medicine. . A stainless steel tubular heater is placed horizontally in a thermostatic water bath, and a perforated aluminum shelf is placed inside the sink. The upper cover is equipped with combined ferrules of different calibers, which can adapt to flasks of different calibers. There is a drain pipe on the left side of the water bath, and an electrical box on the right side of the constant temperature water bath. The front panel of the electrical box is equipped...

AI Technical Summary

Problems solved by technology

The body wall structure of the box body effectively reduces the heat transfer efficiency, and the thermal insulation performance is greatly improved, but there are still the following defects: First, with the heating of the water bath, the water evaporates and the liquid level drops, and the water bath does not set the liquid level The automatic compensation device makes it impossible for the chemical reaction substances put into it to be immersed in the water bath environment all the time, which will affect the chemical reaction and then affect the experimental results. At the same time, it is also very easy to cause safety accidents in the water bath pot dry burning; second, the water bath pot is heated in a water bath When the water bath inside is buoyant, the reaction vessel is often floated and fixed unstable. Although the water bath is equipped with a pot cover composed of ferrules of different calibers, the fixing effect is not good, which causes troubles to the experimental process. Also influence experimental result; Its three, in actual operation process, in pot body, the water temperature at different positions is often different (such as bottom water temperature and liquid surface water temperature), especially under low temperature situation, the water temperature difference of water body everywhere is bigger, and The water bath is not equipped with a device to keep the water in the water tank in a flowing state, resulting in low accuracy of the experimental results

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