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WO2017129038A1 - 联体三产品动筛跳汰机 - Google Patents

联体三产品动筛跳汰机 Download PDF

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Publication number
WO2017129038A1
WO2017129038A1 PCT/CN2017/071742 CN2017071742W WO2017129038A1 WO 2017129038 A1 WO2017129038 A1 WO 2017129038A1 CN 2017071742 W CN2017071742 W CN 2017071742W WO 2017129038 A1 WO2017129038 A1 WO 2017129038A1
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sieve
section
moving
movable
casing
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French (fr)
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张路征
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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
    • B03B5/02—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation
    • B03B5/10—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on jigs
    • B03B5/12—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on jigs using pulses generated mechanically in fluid
    • B03B5/18—Moving-sieve jigs
    • 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
    • B03B5/02—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation
    • B03B5/10—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on jigs
    • B03B5/24—Constructional details of jigs, e.g. pulse control devices

Definitions

  • the application relates to a coal preparation machine for coal mines, in particular to a joint moving sieve jig for washing three products.
  • Gravity coal preparation methods are divided into jigging coal preparation, heavy medium coal preparation, chute coal preparation, and wind coal preparation methods.
  • jigging coal preparation is a physical coal preparation method that utilizes the difference in sedimentation speed of particles of different density materials in water, and is one of the main coal preparation methods.
  • the sieve plate of the jig is moving, it can be divided into a moving sieve jig and a fixed sieve jig.
  • the fixed sieve jig is generally used for 0-80mm coal full-grain washing, and the moving sieve jig is used for 25- 300mm coal drainage.
  • the moving sieve jig is an efficient and simple equipment suitable for the drainage of coal blocks, and has been widely used in coal mines.
  • the moving sieve jig When the moving sieve jig is working, the water flow in the tank body is not pulsating, and the driving mechanism is driven directly by the driving mechanism to reciprocate in the upper and lower cycles in the water medium, so that the materials on the sieve plate are periodically raised, loose, and interfere with settlement. Layering, and then separating the coal gangue by discharging. Due to the limitation of the large-scale lifting wheel, the existing moving sieve jig can only achieve 5.5m2. When using large-scale mines with moving sieve jigs, only the number of moving sieve jigs can be increased to meet the processing capacity, which not only increases equipment investment, but also increases infrastructure and supporting investment.
  • the most direct expansion of the moving sieve jig is to increase the diameter of the lifting wheel and widen the moving sieve to increase the sorting area.
  • the problem caused by increasing the diameter of the lifting wheel is that the process difficulty and manufacturing cost of producing the lifting wheel will increase sharply, and the construction installation cost will also rise accordingly. This is a world-class issue only for the large-scale jig, which will open up a new space for the expansion of large-scale coal mines and thermal coal washing.
  • the purpose of the present application is to solve the technical problem of the above-mentioned large size of the moving sieve jig, and to provide a large-scale three-product moving sieve jig that can improve the efficiency of sorting.
  • the sieve jig includes a casing, a movable sieve disposed inside the casing, an hinge shaft fixed at the front end of the movable sieve, a driving device for powering the movable sieve around the hinge shaft, and a feeding port capable of feeding the movable sieve a plurality of parallel moving screens are arranged in the casing;
  • the moving screen is composed of one-stage and two-stage joints, and the bottoms of one and two sections are provided with inclined sieve plates, and the ends of the sieve plates are fixed with discharge materials a wheel, an overflow weir is arranged above the two discharge wheels, a second end and a weir are connected to a guiding partition, and a scraper conveyor is arranged below the two discharging wheels and the guiding partition;
  • the scraper conveyor is arranged in an arc shape, and the upper part protrudes from the casing, and the preparation hopper is hung between the scrap
  • a bottom of the casing is also provided with a slime scraper conveyor.
  • upper and lower sections of the discharge wheel are provided with upper and lower adjustments to control the discharge of the material.
  • the squeegee conveyor and the slime squeegee are both smoothly transitioned and protruded from the casing at an angle of 60 to 70° with the horizontal plane.
  • the hopper is deformable.
  • the beneficial effects of the application are as follows: 1.
  • the moving sieve jig of the present application integrates block material sorting, material lifting and dewatering, and coal slurry sedimentation separation, and at the same time, the large-scale moving sieve jig is realized, which is beneficial to reducing equipment. And the number of supporting units, reducing investment, providing simple and effective drainage equipment for large and extra large mines; 2.
  • This application uses a scraper conveyor to set up a hopper to replace the material lifting wheel, and opens the large-scale moving sieve jig.
  • Figure 1 is a schematic view of the structure of the present application.
  • FIG. 2 is a schematic structural view of a squeegee conveyor.
  • the three-product moving sieve jig includes a casing 1, a movable sieve 2 disposed inside the casing 1, an articulated shaft 3 fixed to the front end of the movable sieve 2, and a driving for driving the movable sieve 2 to vibrate around the hinge shaft 3.
  • a plurality of parallel moving screens 2 are provided in the casing 1 in a joint.
  • the moving screen 2 is composed of a section 201 and a second section 202.
  • the bottoms of the section 201 and the second section 202 are respectively provided with inclined sieve plates 6, and the ends of the sieve plates 6 are fixed with a discharge wheel 7 and two discharge wheels.
  • the top of the 7 is provided with an overflow weir 8 and a brace 12, and the brace 12 can be adjusted up and down to control the discharge of material.
  • the end of the second section 202 and the weir 8 are connected to a guiding partition 9 which guides the discharge of the washed clean coal while separating the clean coal and the medium coal.
  • a squeegee conveyor 10 is disposed below both of the discharge rollers 7 and the guide spacers 9.
  • the lower part of the scraper conveyor 10 is horizontally arranged, after smooth transition and water
  • the plane protrudes from the casing 1 at 60°, and the hopper 11 is hung between the squeegees of the squeegee conveyor 10.
  • the preparation hopper 11 is a deformable soft material, which can lift the material discharged from the movable sieve 2 out of the water surface and be initially dehydrated. Further, the bottom of the casing 1 is further provided with a slime scraper 13 for scraping the slime from the bottom of the tank during the washing process of the upper part of the casing 1.
  • the coal material can be fed from the inlet port 4 to the sieve plate 6 of a section 201, and the driving device 5 drives the moving sieve 2 to reciprocate in the upper and lower cycles in the aqueous medium around the hinge shaft 3.
  • the moving sieve 2 rises, the material is boosted together with the sieve plate, and the material is lifted relative to the water medium.
  • the moving sieve 2 is lowered, the material quickly separates from the sieve plate 6, and the water quickly enters the moving sieve frame due to the aqueous medium.
  • the effect of the resistance, the material in the water medium for interference and settlement, after repeated interference and settlement, the material is stratified by density.
  • the lower layer of vermiculite is discharged from the discharge wheel of section 201, and is transported to the outside of the casing 1 by the scraper conveyor 10; the coal in the upper layer of the material passes over the overflow of the section 201 and enters the sieve plate of the second section 202.
  • the material of the second section 202 sieve plate is simultaneously stratified, and the middle coal of the lower layer is discharged from the discharge wheel of the second section 202, and discharged into the scraper conveyor for transporting the coal; the upper coal of the material passes over the second section 202
  • the weir is discharged into the scraper conveyor for transporting clean coal under the guidance of the guide partitioning plate 9; the medium coal and the clean coal discharged from the second section 202 are both transported by the scraper conveyor 10 to be transported to the outside of the casing 1.
  • the materials can be divided into three products: vermiculite, medium coal and clean coal.
  • the meteorite is treated in situ, the medium coal is sold nearby, and the clean coal can be transported for a long distance. It not only reduces the inefficient transportation, but also increases the economic benefits, in line with the development direction of the country's clean coal.
  • the application can further further set the movable screen 2 as a multi-screen side by side arrangement to meet the needs of different scale coal mine drainage or further coal to improve the coal quality needs of the series of moving sieve jig.
  • a plurality of moving screens 2 provided for the joint are respectively fed.
  • the material is first sieved into three grades of less than 25mm, 25-80mm and 80-300mm, and 80-300mm of material is washed to a certain moving sieve, and the material of 25-80mm is given to another moving sieve. Washing, reducing the size range of each moving sieve washing material, selecting the appropriate washing frequency and amplitude, is conducive to improving the pertinence of each moving sieve washing, thereby improving the efficiency of washing quantity.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

一种联体三产品动筛跳汰机，包括有壳体（1）、动筛（2）、铰接轴（3）、驱动装置（5）和入料口（4），在壳体中联体设置多台并列的动筛。动筛由一段（201）和二段（202）连体构成，一段和二段的底部均设置有倾斜的筛板（6），筛板的末端固定有排料轮（7），两个排料轮的上方均设置溢流堰（8），二段末端和溢流堰连接一导向隔离板（9），两个排料轮和导向隔离板的下方均布置有刮板输送机（10）。刮板输送机呈弧形设置，上部从壳体中伸出，刮板输送机的刮板间挂有编制料斗（11）。编制料斗能够将动筛排出的物料提升出水面并初步脱水。该动筛跳汰机集块料分选、物料提升脱水、煤泥沉降分离为一体，做到了动筛跳汰机的大型化，有利于减少设备及配套台数、减少投资。

Description

联体三产品动筛跳汰机 技术领域
本申请涉及一种煤矿选煤设备，具体的说是一种洗选出三产品的联体动筛跳汰机。
背景技术
重力选煤方法分为跳汰选煤、重介质选煤、斜槽选煤、风力选煤方法等。其中跳汰选煤是利用不同密度物料颗粒在水中的沉降速度差，进行分层分选的物理选煤方法，是主要的选煤方法之一。根据跳汰机筛板是否运动可分为动筛跳汰机和定筛跳汰机，定筛跳汰机一般用于0-80mm煤炭全粒级洗选，动筛跳汰机用于25-300mm煤炭排矸。动筛跳汰机是适用于煤炭块料排矸的一种高效而简单的设备，在煤矿得到了广泛的应用。
动筛跳汰机工作时槽体中水流无脉动，直接靠驱动机构驱动动筛在水介质中作上、下周期往复运动，使筛板上的物料形成周期性地提升、松散、干扰沉降、分层，再通过排料进行煤矸分离。由于受提升轮大型化的限制，现有动筛跳汰机仅能做到5.5m2。在大型矿井采用动筛跳汰机排矸时，只能增加动筛跳汰机台数来达到处理量的需要，不仅增加了设备投资，也增加了基建和配套投资。动筛跳汰机大型化最直接的就是增大提升轮直径、增宽动筛筛板以增加分选面积。但增大提升轮直径产生的问题是，生产提升轮的工艺难度、制造成本会急剧增大，建筑安装成本也会相应上升。仅就跳汰机大型化而言这是一个具备世界级水平的课题，将会为特大型煤矿块料排矸和动力煤洗选打开新的巨大拓展空间。
发明内容
本申请的目的是为解决上述动筛跳汰机大型化的技术问题，提供一种大型化的、能够提高分选数量效率的联体三产品动筛跳汰机。
本申请为解决上述技术问题所采用的技术方案是：联体三产品动 筛跳汰机，包括有壳体、设置在壳体内部的动筛、固定动筛前端的铰接轴、为动筛绕铰接轴震动提供动力的驱动装置和可向动筛供料的入料口，在壳体中联体设置多台并列的动筛；所述动筛由一段和二段连体构成，一段和二段的底部均设置有倾斜的筛板，筛板的末端固定有排料轮，两个排料轮的上方均设置有溢流堰，二段末端和溢流堰连接一导向隔离板，两个排料轮和导向隔离板的下方均布置有刮板输送机；所述刮板输送机呈弧形设置，上部从壳体中伸出，刮板输送机的刮板间挂有编制料斗；所述编制料斗能够将动筛排出的物料提升出水面并初步脱水。
进一步地，壳体的底部还设置有煤泥刮板输送机。
进一步地，一段和二段的排料轮的上方均设置可上下调节来控制物料排出的挡皮。
更进一步地，刮板输送机和煤泥刮板机均是平滑过渡后与水平面成60～70°夹角伸出壳体。
优选地，编制料斗可变形。
本申请的有益效果是：1、本申请的动筛跳汰机集块料分选、物料提升脱水、煤泥沉降分离为一体，同时做到了动筛跳汰机的大型化，有利于减少设备及配套台数、减少投资，为大型、特大型矿井提供简单有效的排矸设备；2、本申请采用刮板输送机上设置编制料斗来代替物料提升轮，打开了动筛跳汰机的大型化的空间；再加上将原来动筛的单体式改为联体式，可达到用一台联体动筛跳汰机满足特大型煤矿块料排矸需要，可极大的简化工艺设备环节，节省设备投资、建筑安装费用、运转费用等，极大地拓宽动筛跳汰机的应用空间；3、连体动筛跳汰机大型化后可适当控制单位面积物料处理量，降低矸石带煤量，进一步提高动筛跳汰机分选数量效率；4、本申请将两段式动筛联体设置，可把80～300mm的物料给某台动筛洗选，25～80mm的物料给另外的动筛洗选，减小每台动筛洗选物料的粒级范围，选择适当的洗选频率、振幅，有利于提高每台动筛洗选的针对性，进而提高洗选数量效率。
附图说明
图1是本申请的结构示意图。
图2是刮板输送机的结构示意图。
图中标记：
1、壳体
2、动筛
201、一段
202、二段
3、铰接轴
4、入料口
5、驱动装置
6、筛板
7、排料轮
8、溢流堰
9、导向隔离板
10、刮板输送机
11、编制料斗
12、挡皮
13、煤泥刮板机
具体实施方式
实施例1
联体三产品动筛跳汰机，包括有壳体1、设置在壳体1内部的动筛2、固定动筛2前端的铰接轴3、为动筛2绕铰接轴3震动提供动力的驱动装置5和可向动筛2供料的入料口4。在壳体1中联体设置多台并列的动筛2。所述动筛2由一段201和二段202连体构成，一段201和二段202的底部均设置有倾斜的筛板6，筛板6的末端固定有排料轮7，两个排料轮7的上方均设置有溢流堰8和挡皮12，挡皮12可上下调节来控制物料排出。二段202末端和溢流堰8连接一导向隔离板9，导向隔离板9为洗选出的精煤的排出提供引导，同时将精煤和中煤隔离开排出。两个排料轮7和导向隔离板9的下方均布置有刮板输送机10。所述刮板输送机10下部呈水平设置，平滑过渡后与水 平面成60°从壳体1中伸出，刮板输送机10的刮板间挂有编制料斗11。所述编制料斗11为可变形的软质材料，能够将动筛2排出的物料提升出水面并初步脱水。进一步地，壳体1的底部还设置有煤泥刮板机13，用于将壳体1上部洗选煤过程中沉降底部的煤泥从水里刮出。
对本申请进行操作时，可将煤炭物料从入料口4给料到一段201的筛板6上，驱动装置5驱动动筛2围绕铰接轴3在水介质中做上下周期往复运动。动筛2上升时，物料随着筛板一起上升压实，物料相对于水介质做提升运动，动筛2下降时，物料迅速脱离筛板6，水迅速进入动筛筛框中，由于水介质阻力的作用，物料在水介质中作干扰沉降，经过多次干扰沉降，实现物料按密度分层。下层的矸石从一段201的排料轮排出，通过刮板输送机10提升脱水运输到壳体1外；在物料上层的煤料越过一段201的溢流堰进入到二段202的筛板上。二段202筛板上的物料同时在进行分层，下层的中煤从二段202的排料轮处排出，排入运输中煤的刮板输送机；物料上层的精煤越过二段202的溢流堰，在导向隔离板9的引导下排入运输精煤的刮板输送机；从二段202排出的中煤和精煤均通过刮板输送机10提升脱水运输到壳体1外。物料经过本发明结构的动筛跳汰机洗选后，能够将物料分为矸石、中煤和精煤三个产品，矸石就地处理，中煤就近销售，精煤可运输较远的距离销售，既减少了无效运输，又增加了经济效益，符合国家洁净煤发展方向。
本申请还可以进一步地将动筛2设置为多筛并列布置，以满足不同规模煤矿排矸或进一步煤炭提高煤质需要的系列动筛跳汰机。
实施例2
在实施例1的基础上，在供料时，给联体设置的多台动筛2分别给料。物料先经过分级筛将其筛分为小于25mm、25～80mm和80～300mm三个级别的物料，把80～300mm的物料给某台动筛洗选，25～80mm的物料给另外的动筛洗选，减小每台动筛洗选物料的粒级范围，选择适当的洗选频率、振幅，有利于提高每台动筛洗选的针对性，进而提高洗选数量效率。
以上所述仅是本申请的优选实施方式，对于本技术领域的普通技 术人员来说，在不脱离本申请技术原理的前提下，还可以做出若干改进和变型以达到更好的洗选煤效果，这些也应视为本申请的保护范围。

Claims (5)

  1. 联体三产品动筛跳汰机，包括有壳体(1)、设置在壳体(1)内部的动筛(2)、固定动筛(2)前端的铰接轴(3)、为动筛(2)绕铰接轴(3)震动提供动力的驱动装置(5)和可向动筛(2)供料的入料口(4)，其特征在于：在壳体(1)中联体设置多台并列的动筛(2)；所述动筛(2)由一段(201)和二段(202)连体构成，一段(201)和二段(202)的底部均设置有倾斜的筛板(6)，筛板(6)的末端固定有排料轮(7)，两个排料轮(7)的上方均设置有溢流堰(8)，二段(202)末端和溢流堰(8)连接一导向隔离板(9)，两个排料轮(7)和导向隔离板(9)的下方均布置有刮板输送机(10)；所述刮板输送机(10)呈弧形设置，上部从壳体(1)中伸出，刮板输送机(10)的刮板间挂有编制料斗(11)；所述编制料斗(11)能够将动筛(2)排出的物料提升出水面并脱水。
  2. 如权利要求1所述的联体三产品动筛跳汰机，其特征在于：所述壳体(1)的底部还设置有煤泥刮板机(13)。
  3. 如权利要求1所述的联体三产品动筛跳汰机，其特征在于：所述一段(201)和二段(202)的排料轮(7)的上方均设置可上下调节来控制物料排出的挡皮(12)。
  4. 如权利要求1所述的联体三产品动筛跳汰机，其特征在于：所述刮板输送机(10)和煤泥刮板机(13)均是平滑过渡后与水平面成60～70°夹角伸出壳体(1)。
  5. 如权利要求1所述的联体三产品动筛跳汰机，其特征在于：所述编制料斗(11)可变形。
PCT/CN2017/071742 2016-01-26 2017-01-19 联体三产品动筛跳汰机 Ceased WO2017129038A1 (zh)

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