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    ABSORPTION-INDUCTION CONVECTIONAL DUST-CONTROLLING/REMOVING AIR/FOG CURTAIN DEVICE OF FULLY-MECHANIZED WORKING FACE AND METHOD THEREOF
    2.
    发明申请
    ABSORPTION-INDUCTION CONVECTIONAL DUST-CONTROLLING/REMOVING AIR/FOG CURTAIN DEVICE OF FULLY-MECHANIZED WORKING FACE AND METHOD THEREOF 有权

    公开(公告)号：US20210047927A1

    公开(公告)日：2021-02-18

    申请号：US16966295

    申请日：2019-06-26

    Applicant: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

    Inventor： Wen NIE ,  Zihao XIU ,  Dawei CHEN ,  Peng CAI ,  Huitian PENG ,  Jiayi YAN ,  Qiang LIU ,  Bo YANG ,  Tao DU ,  Shibo YANG ,  Haihan ZHANG ,  Huajun LIU

    IPC: E21F5/20 ,  E21C27/02 ,  E21F5/04

    Abstract: Disclosed are an absorption-induction convectional dust-controlling/removing air/fog curtain device of a fully-mechanized working face and a method thereof, belonging to the technical field of dust removal of coal mine. The device includes an extraction type dust-purifying blower, a sector deflector, a shearer external spraying device and an inter-hydraulic-support spraying device, wherein the shearer external spraying devices are mounted at both sides of a body of a shearer close to rocking arms of the shearer and the inter-hydraulic-support spraying devices are mounted at two un-advanced hydraulic supports and two hydraulic supports at a leeward side of a front drum of the shearer respectively, so that spraying is performed at a certain angle to form corresponding fog curtains so as to perform spraying precipitation for a large amount of dusts produced by support advancing and coal cutting. Two extraction type dust-purifying blowers symmetrically mounted at the body of the shearer close to the rocking arms are started simultaneously, air inlets of two blowers directly face front and rear drums of the shearer respectively, and air outlets of two blowers are connected with the sector deflector. The device and the method of the present disclosure are of great practical significance for improving a working environment of workers working at the fully-mechanized working face and ensuring safe production of coal mine.

    PULSATION-FREE WET SPRAYING MACHINE
    3.
    发明申请
    PULSATION-FREE WET SPRAYING MACHINE 有权

    公开(公告)号：US20210010372A1

    公开(公告)日：2021-01-14

    申请号：US16964511

    申请日：2018-12-10

    Applicant: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

    Inventor： Lianjun CHEN ,  Guanguo MA ,  Guoming LIU ,  Gang PAN ,  Zhaoxia LIU ,  Gang WANG ,  Wen NIE ,  Wenhui BIAN

    IPC: E21D11/10 ,  F04B15/02 ,  F04B7/04 ,  F04B53/10

    Abstract: A pulsation-free wet spraying machine resolves the issue of pulsing during pumping of a concrete spraying machine. The wet spraying machine includes a frame, a pumping mechanism, a swing mechanism and a hydraulic system, wherein the pumping mechanism includes a hopper, a material chamber, a concrete feeding mechanism, an auxiliary feeding mechanism and a distribution valve, the hopper is disposed above the material chamber, the concrete feeding mechanism and the auxiliary feeding mechanism each include a hydraulic cylinder, a concrete piston and a concrete cylinder, the concrete cylinder of the concrete feeding mechanism and an auxiliary concrete cylinder of the auxiliary feeding mechanism are both connected with the material chamber, a discharge port is disposed on the material chamber, sealing between the distribution valve and the discharge port is provided by a sealing ring, the distribution valve is disposed inside the material chamber, a front friction plate and a rear friction plate are further disposed inside the material chamber, the swing mechanism includes a swing hydraulic cylinder, a mandrel, a swing arm and a swing hydraulic cylinder base, and the mandrel drives the distribution valve to swing. In addition, The pulsation-free wet spraying machine stably feeds a material, has a compact structure, and is wear-resistant.

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