WO2020098698A1 - 一种空气干砂选煤系统上用排煤轮 - Google Patents

一种空气干砂选煤系统上用排煤轮 Download PDF

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Publication number
WO2020098698A1
WO2020098698A1 PCT/CN2019/117986 CN2019117986W WO2020098698A1 WO 2020098698 A1 WO2020098698 A1 WO 2020098698A1 CN 2019117986 W CN2019117986 W CN 2019117986W WO 2020098698 A1 WO2020098698 A1 WO 2020098698A1
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Prior art keywords
coal
rotating shaft
coal discharge
side plates
air dry
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PCT/CN2019/117986
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English (en)
French (fr)
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高田
姚庭威
陈晓辉
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王光领
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Publication of WO2020098698A1 publication Critical patent/WO2020098698A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/46—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using dry heavy media; Devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B11/00—Feed or discharge devices integral with washing or wet-separating equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/16—Apparatus having only parallel elements the elements being movable and in other than roller form

Definitions

  • the invention relates to the technical field of coal mine equipment, in particular to a coal discharge wheel used in an air dry sand coal preparation system.
  • the coal separation method in the sorting room of air dry sand coal preparation is mainly to install a scraper conveying device in the sorting room.
  • the scraper conveying device is driven by the drive wheel to rotate the chain, and the chain is fixed with a scraper.
  • the chain rotates, the chain
  • the scraper above will push the coal on the upper side of the sorting room from the side plates on both sides of the sorting room to achieve coal separation in the sorting room, but there are more problems in specific use:
  • the technical problem to be solved by the present invention is to overcome the above technical defects and provide a coal discharge wheel for an air dry sand coal preparation system with low failure rate, high coal preparation quality, and low medium loss.
  • a coal discharge wheel used in an air dry sand coal preparation system including a bottom plate, a driving device and a transmission device for transferring coal blocks, and the bottom plate is fixedly connected around There are side plates, and the combination of the bottom plate and the side plates forms a sorting chamber.
  • a rotating shaft is connected between the two opposite side plates on the bottom plate, and the rotating shaft is located on the upper side of the sorting chamber.
  • a number of coal discharge screens are evenly distributed along the circumference of the rotation axis on the rotation shaft.
  • the coal discharge screen includes a number of coal discharge rods.
  • the coal discharge rods are fixed on the rotation axis along the axis of the rotation axis, and the rotation of the rotation shaft drives the coal discharge rods.
  • the rotation range of the coal discharge rod is smaller than the width between the side plates on both sides of the rotation axis, and the side plates on both sides of the rotation axis communicate with the conveying device.
  • a coal discharge wheel used in an air dry sand coal preparation system includes a separation chamber, a rotating shaft, a coal discharge screen, a coal discharge rod, etc.
  • Coal and gangue and other mixed material containers after going through the air dry sand coal preparation process, the coal lump will float on the upper side of the sorting chamber, and the coal lump will be pulled out from the side plates on both sides through the coal discharge screen on the rotating shaft
  • the coal sifting screen pulls out the coal lump so that the amount of medium is taken out very little, the loss of the medium is greatly reduced, the subsequent disengagement workload is reduced, and the overall air dry sand coal preparation is improved
  • the working efficiency of the rotating shaft is located outside the mixed material, which can directly avoid the problem of chain jamming caused by the influence of the mixed material, ensure the stable operation of the overall coal preparation, save maintenance costs, and improve the efficiency of coal preparation.
  • the rotation shafts are set to two, and the rotation directions between the rotation shafts are reversed.
  • the two groups of rotation shafts work at the same time, and the coal pieces are respectively pulled out from the side plates on both sides, and the efficiency is greatly improved.
  • the end of the coal discharge rod is fixedly connected with an elastic rod. Because the elastic rod has a certain elasticity, the elastic rod can pull out the accumulated coal and ensure the smooth passage of the coal when the coal is accumulated at the edge of the side plate. To avoid the problem that the coal discharge rod is stuck at this place, causing damage to the coal preparation components or even the overall shutdown, and ensure that the coal discharge screen smoothly pulls out the coal.
  • the elastic rod is set as a coil spring, and the coil spring is partially sleeved on the coal discharge rod.
  • the coil spring meets the coal block accumulation place, it can rely on its own elasticity to pull out the coal block and can bend it properly to ensure The smooth passing of the coal discharge rod.
  • the driving device includes a motor and a reducer drive-connected to the motor.
  • the reducer is drive-connected to the rotating shaft to ensure stable rotation of the rotating shaft.
  • Fig. 1 is a front view of a coal discharge wheel used in an air dry sand coal preparation system of the present invention.
  • FIG. 2 is a top view of a coal discharge wheel used in an air dry sand coal preparation system of the present invention.
  • a coal discharge wheel used in an air dry sand coal preparation system includes a bottom plate 1, a driving device (not shown in the drawings) and a transfer device (not shown in the drawings) for transferring coal blocks, and the transfer device is a belt conveyor
  • the bottom plate 1 is fixedly connected with side plates 2 around it.
  • the combination of the bottom plate 1 and the side plates 2 forms a sorting chamber 3, and the bottom plate 1 and the four side plates 2 around form a box structure with an open top ,
  • the sorting chamber 3 is used to separate the gangue and coal
  • the rotating shaft 4 is connected between the two opposite side plates 2 on the bottom plate 1
  • the rotating shaft 4 is located on the upper side of the sorting chamber 3, and the rotating shaft 4
  • the height in the sorting chamber 3 is determined by the surface height in the form of medium fluid.
  • the rotating shaft 4 is fixed in the sorting chamber 3 through bearings and the like and drives the coal discharge screen 5 to rotate.
  • the rotating shaft 4 penetrates the side plate 2 and is driven by the driving device Connected, a number of coal discharge screens 5 are evenly distributed along the rotation axis 4 on the rotation shaft 4.
  • the coal discharge screen 5 includes a number of coal discharge rods 6.
  • the coal discharge rods 6 are fixed on the rotation axis 4 along the axis of the rotation axis 4.
  • the coal discharge rod 6 can be fixed on the rotating shaft 4 by welding, threading, etc.
  • the gap between the coal discharge rod 6 can be set according to the size of the coal block to ensure that the coal block can be screened out, and the rotation of the rotating shaft 4 drives the discharge
  • the coal rod 6 rotates in the circumferential direction of the rotating shaft 4 and the rotation range of the coal discharge rod 6 is smaller than the width between the side plates 2 on both sides of the rotary shaft 4 to ensure that the coal discharge rod 6 can effectively rotate in the sorting chamber 3 and the rotating shaft 4 on both sides
  • the side plate communicates with the conveying device, and the coal discharge screen 5 draws out the coal lump out of the sorting chamber 3, and the dialed coal lump is directly transported out through the conveying device.
  • the rotation shafts 4 are set to two, and the rotation directions of the rotation shafts 4 are opposite, and the two groups of rotation shafts 4 work at the same time to separate the coal pieces from the side plates 2 on both sides of the separation chamber 3 If you dial it out, the efficiency is greatly improved.
  • the end of the coal discharge rod 6 is fixedly connected with an elastic rod 7, the elastic rod 7 has a certain elasticity, the coal lump is on the side plate 2 When piled at the edge, the elastic rod 7 can pull out the accumulated coal and ensure the smooth passage of the coal, to avoid the problem that the coal discharge rod 6 is stuck at this place, causing damage to the coal preparation components or even overall shutdown, and to ensure the coal discharge screen 5 Smoothly pull out the coal block.
  • the elastic rod 7 is set as a coil spring, the coil spring is partially sleeved on the coal discharge rod 6, the coil spring is partially sleeved on the coal discharge rod 6, the coil spring is encountered When it reaches the coal block accumulation place, it can rely on its own elasticity to pull out the coal block and can bend it properly to ensure the smooth passing of the coal discharge rod 6.
  • the driving device includes a motor and a reducer drive-connected to the motor.
  • the reducer is drive-connected to the rotating shaft 4 to ensure stable rotation of the rotating shaft 4.
  • the invention is mainly used for coal lump separation in air dry sand coal preparation.
  • the separation chamber is used as a container for mixtures of medium, coal, gangue, etc.
  • the driving device drives the rotating shaft to rotate, and the rotating shaft drives the coal discharge screen to pull out the coal blocks from the side plates on both sides of the sorting room.
  • the coil spring at the end of the coal discharge rod has a certain elasticity, which can pull out the accumulated coal lumps and ensure the smooth passage of the coal lumps. Stuck at the accumulation of coal.

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  • Combined Means For Separation Of Solids (AREA)

Abstract

一种空气干砂选煤系统上用排煤轮，包括底板（1）、驱动装置与用于传送煤块的传送装置。底板四周固定连接有侧板（2），底板与侧板组合形成分选室（3），底板上相对两个侧板间转动连接有转动轴（4），转动轴贯穿出侧板与驱动装置传动连接，转动轴上沿转动轴周向均匀分布有若干排煤筛（5），排煤筛包括若干排煤杆（6），转动轴转动带动排煤杆沿转动轴周向转动，排煤杆转动范围小于转动轴两侧侧板之间宽度，转动轴两侧侧板连通传送装置。该排煤轮具有故障率低，煤块分选效率高，介质损耗少的优点，从而节省了成本，提升了工作效率。

Description

一种空气干砂选煤系统上用排煤轮 技术领域
本发明涉及煤矿设备技术领域，具体是指一种空气干砂选煤系统上用排煤轮。
背景技术
在空气干砂选煤技术中，利用介质并根据煤与矸石比重的差别实现煤与矸石的分离，目前我国空气干砂选煤的工业应用研究和开发工作较早，但目前还没有实现工业化生产，还有一些工程技术问题没有解决，从分选室中进行选煤是影响整体空气干砂选煤设备能否正常工作的重要因素之一。
目前空气干砂选煤中分选室选煤方式主要是在分选室中安装刮板输送装置，刮板输送装置是由传动轮带动链条转动，链条上固定有刮板，链条转动时，链条上的刮板随之将分选室上侧的煤块从分选室两侧的侧板上推出，实现分选室内的选煤，但是在具体使用中有较多的问题：
1、由于链条位于介质、煤块、矸石等混合物料中，传动轮与链条之间容易卡入煤块与矸石，对链条损害较大，介质或较小的碎块容易进入到传动轮内部，影响传动轮的转动甚至卡死，导致选煤工作无法进行，工作效率低，整体的维修成本也较大。
2、由于链条刮板本身的选煤方式，在将煤块推出分选室时部分介质也被推出，加重了后续的脱介工作量，增加了介质损耗，拉低了空气干砂选煤设备的工作效率。
3、由于刮板是跟随链条不断转动的，在刮板移动到分选室下方时，会将小块的尤其是片状的矸石刮送到布风板内，对布风板造成很大的损坏，破坏布风 板的透气均匀性，维修成本较高，整体的工作效率被拉低。
发明内容
本发明要解决的技术问题是克服以上技术缺陷，提供一种故障率低、选煤质量高、介质损耗少的空气干砂选煤系统上用排煤轮。
为解决上述技术问题，本发明提供的技术方案为：一种空气干砂选煤系统上用排煤轮，包括底板、驱动装置与用于传送煤块的传送装置，所述的底板四周固定连接有侧板，底板与侧板的组合形成分选室，底板上相对的两个侧板之间转动连接有转动轴，转动轴位于分选室上侧，转动轴贯穿出侧板与驱动装置传动连接，转动轴上沿转动轴周向均匀分布有若干个排煤筛，排煤筛包括若干个排煤杆，排煤杆沿转动轴轴向固定在转动轴上，转动轴转动带动排煤杆沿转动轴周向转动，排煤杆转动范围小于转动轴两侧侧板之间宽度，转动轴两侧侧板连通传送装置。
本发明与现有技术相比的优点在于：一种空气干砂选煤系统上用排煤轮包括了分选室、转动轴、排煤筛、排煤杆等，其中分选室作为介质、煤、矸石等混合物料的容器，在经过空气干砂选煤工艺后，煤块会漂浮在分选室内的上侧，通过转动轴上的排煤筛将煤块从两侧侧板上拨出，从而实现分选室的选煤，排煤筛将煤块拨出方式使得介质被带出量极少，介质的损耗大大降低，使后续的脱介工作量变小，提高空气干砂选煤整体的工作效率，转动轴传动部分位于混合物料外部，可直接避免了因混合物料的影响导致链条卡死等故障问题，保证整体选煤的运行稳定，节省维修成本，提高选煤效率，此种方式还直接避免了分选室底部布风板被刮板刮入碎片导致损坏的问题，极大的降低了布风板处的故障率，提高整体的选煤效率，节省维修成本，一种空气干砂选煤系统上用排煤轮整体故障率低，煤块分选效率高，介质损耗极少，节省较大的成本，有效 提升了空气干砂选煤设备整体的工作效率。
作为改进，所述的转动轴设为两个，转动轴之间转向相反，两组转动轴同时工作，将煤块分别从两侧侧板处拨出，效率大大提升。
作为改进，所述的排煤杆端部固定连接有弹性杆，弹性杆因具有一定弹性，煤块在侧板边缘处堆积时弹性杆可将堆积的煤块拨出并保证煤块顺畅通过，避免出现排煤杆在该处卡死导致选煤部件损坏甚至整体停工的问题，保证排煤筛顺畅的将煤块拨出。
作为改进，所述的弹性杆设为螺旋弹簧，螺旋弹簧部分套接在排煤杆上，螺旋弹簧在遇到煤块堆积处时能够依靠本身的弹性将煤块拨出并能够适当弯曲以保证排煤杆的顺畅通过。
作为改进，所述的驱动装置包括电机以及与电机传动连接的减速机，减速机与转动轴传动连接，保证转动轴的稳定转动。
附图说明
图1是本发明一种空气干砂选煤系统上用排煤轮的正视图。
图2是本发明一种空气干砂选煤系统上用排煤轮的俯视图。
如图所示：1、底板，2、侧板，3、分选室，4、转动轴，5、排煤筛，6、排煤杆，7、弹性杆。
具体实施方式
下面结合附图对本发明做进一步的详细说明。
一种空气干砂选煤系统上用排煤轮，包括底板1、驱动装置(附图未画出)与用于传送煤块的传送装置(附图未画出)，传送装置是以皮带机为基础传送部件，所述的底板1四周固定连接有侧板2，底板1与侧板2的组合形成分选室3，底板1与四周的四个侧板2形成一个上方开口的箱体结构，分选室3用于将矸 石、煤块分离开的容器，底板1上相对的两个侧板2之间转动连接有转动轴4，转动轴4位于分选室3上侧，转动轴4在分选室3内的高度由介质流体形式时表面高度决定，转动轴4通过轴承等固定在分选室3内并带动排煤筛5转动，转动轴4贯穿出侧板2与驱动装置传动连接，转动轴4上沿转动轴4周向均匀分布有若干个排煤筛5，排煤筛5包括若干个排煤杆6，排煤杆6沿转动轴4轴向固定在转动轴4上，排煤杆6可通过焊接、螺纹等连接方式固定在转动轴4上，排煤杆6之间的间隙可根据煤块大小设定，保证能够将煤块筛出，转动轴4转动带动排煤杆6沿转动轴4周向转动，排煤杆6转动范围小于转动轴4两侧侧板2之间宽度，保证排煤杆6能够在分选室3内有效转动，转动轴4两侧侧板连通传送装置，排煤筛5将煤块拨出分选室3，拨出的煤块直接通过传送装置运出。
为了提高选煤效率，进一步的，所述的转动轴4设为两个，转动轴4之间转向相反，两组转动轴4同时工作，将煤块分别从分选室3两侧侧板2处拨出，效率大大提升。
为了使煤块在分选室3内更为顺畅的被拨出，进一步的，所述的排煤杆6端部固定连接有弹性杆7，弹性杆7因具有一定弹性，煤块在侧板2边缘处堆积时弹性杆7可将堆积的煤块拨出并保证煤块顺畅通过，避免出现排煤杆6在该处卡死导致选煤部件损坏甚至整体停工的问题，保证排煤筛5顺畅的将煤块拨出，进一步的，所述的弹性杆7设为螺旋弹簧，螺旋弹簧部分套接在排煤杆6上，螺旋弹簧部分套接在排煤杆6上，螺旋弹簧在遇到煤块堆积处时能够依靠本身的弹性将煤块拨出并能够适当弯曲以保证排煤杆6的顺畅通过。
为了使整体选煤的稳定运行，进一步的，所述的驱动装置包括电机以及与电机传动连接的减速机，减速机与转动轴4传动连接，保证转动轴4的稳定转 动。
本发明主要用于空气干砂选煤中的煤块分选，在具体使用时，分选室作为介质、煤、矸石等混合物料的容器，在经过空气干砂选煤工艺后，煤块会漂浮在分选室内的上侧，驱动装置带动转动轴转动，转动轴带动排煤筛将煤块从分选室的两侧侧板上拨出，被拨出的煤块直接通过传送装置运送到下一设备，在出现煤块在分选室的侧板处出现堆积时，排煤杆端部的螺旋弹簧因具有一定弹性，可将堆积的煤块拨出并保证煤块顺畅通过，不会卡死在煤块堆积处。
以上对本发明及其实施方式进行了描述，这种描述没有限制性，附图中所示的也只是本发明的实施方式之一，实际的结构并不局限于此。总而言之如果本领域的普通技术人员受其启示，在不脱离本发明创造宗旨的情况下，不经创造性的设计出与该技术方案相似的结构方式及实施例，均应属于本发明的保护范围。

Claims (5)

  1. 一种空气干砂选煤系统上用排煤轮，包括底板(1)、驱动装置与用于传送煤块的传送装置，其特征在于：所述的底板(1)四周固定连接有侧板(2)，底板(1)与侧板(2)的组合形成分选室(3)，底板(1)上相对的两个侧板(2)之间转动连接有转动轴(4)，转动轴(4)位于分选室(3)上侧，转动轴(4)贯穿出侧板(2)与驱动装置传动连接，转动轴(4)上沿转动轴(4)周向均匀分布有若干个排煤筛(5)，排煤筛(5)包括若干个排煤杆(6)，排煤杆(6)沿转动轴(4)轴向固定在转动轴(4)上，转动轴(4)转动带动排煤杆(6)沿转动轴(4)周向转动，排煤杆(6)转动范围小于转动轴(4)两侧侧板(2)之间宽度，转动轴(4)两侧侧板连通传送装置。
  2. 根据权利要求1所述的一种空气干砂选煤系统上用排煤轮，其特征在于：所述的转动轴(4)设为两个，转动轴(4)之间转向相反。
  3. 根据权利要求1所述的一种空气干砂选煤系统上用排煤轮，其特征在于：所述的排煤杆(6)端部固定连接有弹性杆(7)。
  4. 根据权利要求3所述的一种空气干砂选煤系统上用排煤轮，其特征在于：所述的弹性杆(7)设为螺旋弹簧，螺旋弹簧部分套接在排煤杆(6)上。
  5. 根据权利要求1所述的一种空气干砂选煤系统上用排煤轮，其特征在于：所述的驱动装置包括电机以及与电机传动连接的减速机，减速机与转动轴(4)传动连接。
PCT/CN2019/117986 2018-11-14 2019-11-13 一种空气干砂选煤系统上用排煤轮 WO2020098698A1 (zh)

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CN109317297A (zh) * 2018-11-14 2019-02-12 王光领 一种空气干砂选煤系统上用排煤轮
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