An integrated automatic floating and sinking machine with circular symmetrical structure

Abstract

The invention discloses an integrated type automatic floating-sinking machine with an annular symmetrical structure. The floating-sinking machine is of the annular symmetrical type mechanical structure and comprises a coal sample pretreatment tank, a gangue collecting tank, air cylinder sets and a plurality of density grade devices, wherein the coal sample pretreatment tank is arranged at the left end of the annular mechanical structure composed of a rotating ring disc guide rail and a complete machine rotating ring disc, and the gangue collecting tank is arranged at the right end of the annular mechanical structure; the air cylinder sets are arranged on the left side of the coal sample pretreatment tank, and the right side of the gangue collecting tank and each composed of a horizontal movement air cylinder and a vertical movement air cylinder; and the density grade devices are arranged between the right side of the coal sample pretreatment tank and the left side of the gangue collecting tank along the inner side of the annular mechanism structure in sequence from low density grade to high density grade, each density grade device is composed of a water bath heating tank, a float collecting tank and a floating-sinking barrel, and the float collecting tanks in the density grade devices are arranged on the same sides of the corresponding water bath heating tanks. The automatic floating-sinking machine can be used for a coal floating-sinking test and is further suitable for the technical field such as gravity separation of solid waste treatment and gravity separation of nonferrous metals.

Description

technical field [0001] The patent of the present invention relates to a floating-sinking experimental device for separating materials according to density to produce products of corresponding densities during coal gravity separation. This floating-sinking device is not only mainly used for coal washing, but also widely used in solid waste treatment, non-ferrous metal gravity separation and other fields. Background technique [0002] At present, the dense medium coal preparation process has become the main process of coal preparation plants due to its outstanding advantages such as high separation accuracy, wide adjustable range of separation density, strong adaptability to feeding materials, and low infrastructure and operating costs. Floating and sinking experiments are required for the selectability evaluation and the evaluation of the separation effect of dense medium coal preparation. At present, in the analysis laboratories of coal preparation plants, laboratories of un...

AI Technical Summary

Problems solved by technology

There are many problems in the process of artificial floating and sinking experiments: (1) Nowadays, the floating and sinking experiments of both production enterprises and scientific research institutes are completed manually in the floating and sinking laboratory, with complicated procedures, low efficiency and high labor intensity. When the amount of coal sample is large, the disadvantages of artificial floating and sinking are more prominent, and experimental errors are prone to occur

(2) The heavy liquid used in the floating and sinking experiment is generally volatile and corrosive. If it is in contact with the operator for a long time during use, it will easily cause harm to the operator.

(3) Although the national standard requires that the room temperature should not be lower than 20°C for "small floats and sinks" and not lower than 16°C for "large floats and sinks", there is still the phenomenon that the heavy liquid crystallizes out, which causes the density of the heavy liquid to fluctuate, especially This is especially true for high-density heavy liquid, which is difficult to prepare even in the cold winter

(4) The national standard buoyancy and sinking laboratory is carried out, and the indoor area is not less than 36 m 2 , for the process of manual floating and sinking experiments, it is easy to occupy too much space, and it is easy to get dirty and messy

For this reason, inventing a kind of float-sink experimental device that separates materials according to density to produce products of corresponding density during coal gravity separation, avoids or solves the above-mentioned problems, and has a strong application value for material float-sink experiments. There are relatively few reports on

Images