A heating filter funnel
A filter funnel and funnel technology, which is applied in filtration separation, gravity filter, separation method, etc., can solve the problems of inconvenient manual adjustment of copper grab rings, large heat loss of copper hopper walls, and slow heating of the convex column heating end. To achieve the effect of reducing heat loss, easy adjustment, and ensuring the effect
Active Publication Date: 2021-03-16
信阳学院
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Problems solved by technology
[0005] The invention solves some defects existing in the actual experiment process of the existing hollow double-layer thermal insulation funnel, mainly including the upper through hole being closer to the center position, the heating end of the convex post heating slowly and inefficiently, and the copper gripping ring being heated is inconvenient Manual adjustment, large heat loss of copper bucket wall and easy to be corroded
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[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0015] Such as figure 1 As shown, a heating filter funnel includes a hollow lower bucket wall 1 and a hollow upper bucket wall 2, and a fan-shaped through hole 3 is arranged on one side of the connecting part to communicate the hollow lower bucket wall 1 and the hollow upper bucket wall 2. There is a triangular closed hollow tube 4 on the opposite side of the through hole 3, which connects the hollow lower bucket wall 1 and the hollow upper bucket wall 2 from the outside of the bucket wall, and there is an inclined S-shaped opening on the side of the fan-shaped through hole 3 on the hollow upper bucket wall 2. Type hollow tube 5, which is on the same plane as the triangular closed hollow tube 4, the upper edge of the upper nozzle is longer than the lower edge, and the lower edge is higher than the top of the hollow upper bucket wall 2, and a pull ring i...
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The invention relates to a novel heating filter funnel, and can effectively solve the problems that an upper through hole is nearer to a central position, a heating end is slow to heat with low efficiency, a grasping ring is inconvenient to manually adjust after being heated, the heat loss of a funnel wall is large and the funnel wall is easy to corrode in existing technique and products. The novel heating filter funnel is characterized in that the funnel wall is of a hollow double-layer structure which is divided into upper and lower layers and the upper and lower layers are communicated viafan-shaped holes, the periphery of the funnel wall is wrapped with a fireproof and heat-insulating material, the top end of the funnel wall is provided with a threaded through-hole column and a nut cap, one side face of the funnel wall is provided with a triangular closed hollow tube for communicating the divided funnel wall, the other side face of the funnel wall is provided with a slanted S-shaped open hollow tube for gas outlet, in addition, the two sides of the top end of the funnel wall are provided with connected heat-insulating pull rings which are divided into stainless steel inner linings and anti-scald, high-temperature-resistant and corrosion-resistant outer linings. The novel heating filter funnel has high heating efficiency and low heat loss, is uneasy to corrode, and effectively prevents scald, being an improvement and innovation of thermal filtration experimental instruments on the basis of practice.
Description
technical field [0001] The invention relates to the field of filter funnel supplies commonly used in chemical experiments, in particular to a heat-retaining and heating filter funnel. Background technique [0002] At present, when many universities and research institutes conduct chemical experiments or teaching, thermal filtration is a basic operation, especially in experiments that require recrystallization. For example, in the recrystallization and purification experiment of crude acetanilide, it is necessary to dissolve the crude acetanilide in water first, then add activated carbon to the solution for decolorization, and then remove impurities and activated carbon through a filter funnel and filter paper after decolorization. But it should be noted that the solubility of acetanilide is only 0.56g / 100g water in 25°C water, but can reach 5.5g / 100g water in 100°C water, so it is not only necessary to heat during the dissolution process to prevent The temperature drops to ...
Claims
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IPC IPC(8): B01D29/085B01D35/18
Inventor 杨潇剑毛丽惠王倩倩吴艳玲李晓红刘漫漫薛中港
Owner 信阳学院