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Coal slime spiral conveying screen dehydration continuous system

A technology of screw conveying and screw conveyor, which is applied in the field of continuous dehydration system of coal slime screw conveying screen, can solve the problems of long working cycle, high operation requirements and low work efficiency, and achieves improved efficiency, continuous operation, and lightening Effects of Work Intensity and Stress

Inactive Publication Date: 2016-03-02
天津中外建输送机械有限公司
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Problems solved by technology

The dehydration effect of the filter press is relatively good, and the coal slime can be finally recovered. However, due to its intermittent working mode, each filter press process must cycle through very complicated operations such as feeding, pressing, and unloading.
This not only has high operating requirements for the operator of the filter press, but also has a long working cycle and low working efficiency, so it is not suitable for continuous treatment of slime water

Method used

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  • Coal slime spiral conveying screen dehydration continuous system
  • Coal slime spiral conveying screen dehydration continuous system

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Embodiment

[0017] Such as figure 1 Shown is a coal slime screw conveying screen dehydration continuous system, including a screw conveyor 3; a lower hopper 1 is arranged above the feed end of the screw conveyor 3, and a discharge hopper is arranged below the discharge end of the screw conveyor 3. Port 4; screw rod 31 and screw blade 32 are installed inside the screw conveyor 3; an upper shell 2 and a lower shell 5 are arranged outside the screw conveyor 3; the lower shell 5 is a screen capable of filtering moisture .

[0018] The lower part of the screen is provided with a settling water collection box 6 for collecting and dehydrating the screen, and the small particles of coal slime in the coal slime will also fall into the settling water collection box 6 through the screen along with the moisture. Since the density of the coal slime is greater than that of water, there will be obvious stratification after standing for a period of time. In order to separate the coal slime from the wate...

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Abstract

The invention discloses a coal slime spiral conveying screen dehydration continuous system. The coal slime spiral conveying screen dehydration continuous system comprises a spiral conveyor; the outside of the spiral conveyor is provided with an upper housing, and a lower housing; the lower housing is a screen capable of filtering water; the lower part of the screen is provided with a precipitation water tank used for collecting matters obtained via screening of the screen; the upper part and the lower part of one side of the precipitation water tank are provided with a water outlet and a pump port respectively; and the pump port is connected with a feeding hopper via a pipeline. According to the coal slime spiral conveying screen dehydration continuous system, the screen is arranged on the lower part of the spiral conveyor, so that small particle coal slime will fall into the precipitation water tank together with removed water. When layer of coal slime and water is realized, the small particle coal slime is pumped into the feeding hopper via the pump port, so that the small particle coal slime is delivered into the spiral conveyor again, and continuous operation is realized.

Description

technical field [0001] The invention relates to the technical field of conveying machinery, in particular to a coal slime spiral conveying screen mesh dehydration continuous system. Background technique [0002] In coal preparation plants, the dehydration of fine particle materials is difficult. Especially in the case of increasingly refined coal processing, after various sorting equipment, the over-grinding of coal and the formation of secondary slime have greatly affected the properties of the slime water, which has brought great harm to the dehydration of the slime water. difficulty. In addition, flotation reagents, dense media used in dense media cyclones, etc. also make the composition of slime water more and more complicated. It is of great significance to the production of the entire coal preparation plant to solve the problem of dehydration of the slime water and realize the closed cycle of the entire washing water in the coal preparation plant. [0003] The dehyd...

Claims

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Application Information

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IPC IPC(8): C02F11/12
CPCC02F11/121C02F2301/026C02F2301/066C02F2303/06
Inventor 张鹏张大鹏张春和何健
Owner 天津中外建输送机械有限公司
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