WO2017166413A1 - 一种模块式变跨距变振幅大型振动筛 - Google Patents

一种模块式变跨距变振幅大型振动筛 Download PDF

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Publication number
WO2017166413A1
WO2017166413A1 PCT/CN2016/083577 CN2016083577W WO2017166413A1 WO 2017166413 A1 WO2017166413 A1 WO 2017166413A1 CN 2016083577 W CN2016083577 W CN 2016083577W WO 2017166413 A1 WO2017166413 A1 WO 2017166413A1
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WIPO (PCT)
Prior art keywords
screen
bracket
box
screen box
vibration
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PCT/CN2016/083577
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English (en)
French (fr)
Inventor
段晨龙
赵跃民
江海深
乔金鹏
刁海瑞
武继达
樊旭晨
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中国矿业大学
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Application filed by 中国矿业大学 filed Critical 中国矿业大学
Priority to RU2017130210A priority Critical patent/RU2675274C1/ru
Priority to AU2016358298A priority patent/AU2016358298B2/en
Priority to CA2977286A priority patent/CA2977286C/en
Priority to ZA2017/01395A priority patent/ZA201701395B/en
Publication of WO2017166413A1 publication Critical patent/WO2017166413A1/zh

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    • 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
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • 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
    • B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • 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
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens

Definitions

  • the invention relates to a screening machine, in particular to a modular variable span variable amplitude large-sized vibrating screen.
  • material grading equipment In the engineering field, material grading equipment is often used.
  • Common material grading equipment mainly includes: gravity-classified power equipment, and its representative equipments are spiral classifiers, mechanical agitating water classifiers, cloud-tin hydraulic classifiers, etc. Although these devices are simple in structure, they occupy a large area and are not easy to disassemble and repair.
  • the centrifugal power is a class of power equipment.
  • the representative equipment has a hydrocyclone, which is characterized by large processing capacity, but high granularity and easy It is wearable and easy to block; the vibrating screen which uses the mesh vibrating belt to beat the animal material and realize the layering and grading of the material drilling gap is widely used in the material grading operation of each coal preparation plant.
  • the representative equipment has a linear vibrating screen.
  • the existing vibrating screen structure is strong in integrity, difficult to disassemble, and it is not easy to replace parts, which is not convenient for maintenance; when the actual production requires unbalanced exciting force or needs different amplitudes at different positions on the screen surface, the existing vibrating screen is excited.
  • the motor is fixed on the side plate of the screen box by the excitation beam, and the span or the relative position of the centroid of the screen box cannot be adjusted, so that the unbalanced excitation force cannot be satisfied; the existing vibrating screen is fixed by the mechanism, and the vibration damping component is welded. The way is fixed and it is not convenient to adjust the screen inclination.
  • the object of the present invention is to provide a modular variable-span variable-amplitude large-scale vibrating screen with the advantages of the technical problems existing in the prior linear vibrating screen machine, which has a compact structure and is structurally stable while satisfying the requirements of different working conditions.
  • the screen inclination angle, the excitation motor span, the exciting force and the relative position of the exciting force and the centroid of the screen box can be conveniently adjusted to improve the screening accuracy.
  • the modular installation method is convenient for disassembly and convenient maintenance, and the power consumption of the device is low.
  • a modular variable span variable amplitude large-sized vibrating screen including a sieve box, the sieve box is provided with an excitation beam, and an excitation motor is mounted on the excitation beam, and the sieve
  • the lower part of the box is provided with a bracket
  • the screen box comprises two screen box side plates which are oppositely arranged, the screen surface is fixed at the lower end of the box side plate, the horizontal side card slot is arranged on the side plate of the box, and two side plates are arranged between the two side walls of the screen box.
  • the root excitation beam has vertical card slots at both ends of the excitation beam, and the adjusting bolt is inserted into the horizontal card slot and the vertical card slot to fix the excitation beam and the box side plate, and the bracket is longitudinally spaced along the screen box. At least two groups are arranged, the bracket is provided with a bracket height adjusting structure, and a bracket span adjusting mechanism is arranged between the adjacent two brackets.
  • one of the two excitation beams is adjacent to the feed end of the screen box, and the other is adjacent to the discharge end of the screen box.
  • the feeding end and the discharging end of the screen box are respectively provided with reinforcing beams, and both ends of the reinforcing beam are fixed to the side plates of the box by the locking bolts.
  • brackets are two groups, one of which is located at the feeding end of the screen box, and the other group is located at the screen. The discharge end of the box.
  • the bracket height adjusting structure comprises an upper adjusting block and a lower adjusting block, and a top threaded hole is arranged on the top surface of the lower adjusting block and the bottom surface of the adjusting block on the bracket, and the bracket is matched with the vertical threaded hole.
  • the outer span of the bracket includes an adjusting screw, and a side of the lower adjusting block of the bracket is provided with a transverse threaded hole matching the adjusting screw.
  • a damping spring is disposed between the screen box and the bracket.
  • Each component adopts a modular structure, adjacent modules are clamped and fixed by bolts; (2) the span of the excitation beam is adjusted by changing the spacing of the two excitation beams; (3) Adjust the angle of the eccentric block in the excitation motor to adjust the magnitude of the excitation force, and then realize the amplitude change of the feeding end and the discharge end; (4) realize the excitation motor and the sieve by adjusting the position and height of the two excitation beams (5) Adjusting the different inclination angles of the screen surface by adjusting the bracket height adjustment structure of the feeding end and the discharge end bracket and the bracket span adjusting mechanism respectively.
  • Figure 1 is a front elevational view of the vibrating screen of the present invention
  • Figure 2 is a left side view of the vibrating screen of the present invention.
  • Figure 3 is a plan view of the vibrating screen of the present invention.
  • Figure 4 is a perspective view of the vibrating screen of the present invention.
  • a modular variable span variable amplitude large-sized vibrating screen comprises a screen box 1 , and the screen box 1 comprises two screen box side plates 1-1 opposite to each other.
  • the lower end of the side plate 1-1 is fixed with a screen surface 7, and the screen box side plate 1-1 and the screen surface 7 constitute the main structure of the screen box 1.
  • One end of the screen box 1 is a feeding end 6, and the other end of the screen box 1 is Discharge end 8.
  • a horizontal card slot 11 is disposed on the side plate 1-1 of the box, and two excitation beams 3 are disposed between the two side plates 1-1 of the screen box, and one of the two excitation beams 3 is adjacent to the screen box 1
  • the material end 6 and the other end are adjacent to the discharge end 8 of the screen box 1.
  • a vertical card slot 12 is disposed at both ends of the excitation beam 3, and the adjusting bolt 9 is inserted into the horizontal card slot 11 and the vertical card slot 12 to fix the excitation beam 3 and the box side plate 1-1 in the excitation beam.
  • the feeding end 6 and the discharging end 8 of the screen box 1 are provided with reinforcing beams 4, and both ends of the reinforcing beam 4 are fixed to the box side plates 1-1 by locking bolts.
  • Brackets 5 Two sets of brackets 5 are arranged in the lower part of the screen box 1, one set of brackets 5 are located at the feeding end 6 of the screen box 1, and the other set of brackets 5 are located at the discharge end 8 of the screen box 1.
  • the bracket 5 is provided with a bracket height adjusting structure, and a bracket is arranged between the adjacent two brackets 5 Span adjustment mechanism.
  • the bracket height adjusting structure comprises an upper bracket adjusting block 14 and a lower bracket adjusting block 13.
  • the top surface of the lower bracket adjusting block 13 and the bottom surface of the adjusting block 14 on the bracket are respectively provided with vertical threaded holes, and the bracket 5 is provided with a vertical threaded hole. Matching external threads, the upper and lower ends of the bracket 5 are screwed into the vertical threaded holes.
  • the bracket span adjusting mechanism includes an adjusting screw 10, and a lateral threaded hole matching the adjusting screw 10 is disposed on a side of the lower adjusting block 13 of the bracket, and both ends of the adjusting screw 10 are screwed into the horizontal threaded hole.
  • a damping spring 15 is arranged between the screen box 1 and the bracket 5.
  • the screen box 1 vibrates under the driving of the excitation motor 2, and the material is fed into the screen surface 7 by the feeding end 6 to be sieved and classified, and the coarse material is discharged through the discharging end 8, and the fine material is sieved through the sieve. Face 7 enters the screen and becomes a fine grain product.
  • the excitation motor 2 fixed on the excitation beam 3 is the key to the delamination of the material drilling gap, and the angle of the eccentric block in the excitation motor 2 near the feeding end 6 and the discharge end 8 can be adjusted as needed to achieve the excitation. The magnitude of the vibration changes.
  • the excitation beam 3 is fastened and fixed to the screen box side plate 1-1 by an adjusting bolt 9.
  • the adjusting bolt 9 is slid in the horizontal card slot 11 so that the span between the two excitation motors 2 is varied within a certain range.
  • the bolts are slid and tightened in the vertical slot 12 to change the height of the two excitation motors in the vertical direction, thereby changing the exciting force and the relative position of the center of the screen box 1 to meet the requirements of the unbalanced exciting force.
  • the screen surface 7 usually requires a certain angle with the horizontal plane, and the heights of the two groups of brackets 5 are respectively adjusted by the height adjustment structure of the brackets on the bracket 5 at the feeding end and the discharging end to achieve different inclination angles. When adjusting the inclination angle of the screen surface 7, it is necessary to adjust the bracket span adjusting mechanism at the same time, so that the two sets of brackets 5 reach a static balance.

Abstract

公开了一种模块式变跨距变振幅大型振动筛，包括筛箱(1)，筛箱(1)设有激振梁(3)，在激振梁(3)上安装激振电机(2)，筛箱(1)下部设置支架(5)，筛箱(1)包括相对设置的两块筛箱侧板(1-1)，在箱侧板(1-1)下端固定筛面(7)，箱侧板(1-1)上设有水平卡槽(11)，两块筛箱侧板(1-1)之间设有两根激振梁(3)，激振梁(3)两端设有竖直卡槽(12)，将调节螺栓(9)穿入水平卡槽(11)和竖直卡槽(12)内，使激振梁(3)与箱侧板(1-1)固定，支架(5)沿筛箱(1)纵向间隔设置至少两组，支架(5)设有支架高度调节结构，相邻两组支架(5)之间设有支架跨距调节机构。该振动筛采用模块化安装方式，便于拆卸，方便维护，可以方便地调节筛面倾角、激振电机跨距、激振力大小以及激振力与筛箱质心的相对位置，提高筛分精度。

Description

一种模块式变跨距变振幅大型振动筛 技术领域
本发明涉及一种筛分机械，特别是一种模块式变跨距变振幅大型振动筛。
背景技术
在工程领域中常会用到物料分级设备，常见的物料分级设备主要有：以重力为分级动力的设备，其代表设备为螺旋分级机、机械搅拌式水利分级机、云锡式水力分级箱等，这些设备虽然结构简单，但是占地面积大，不便于拆装维修；以离心力为分级动力的设备，其代表性设备有水力旋流器，其特点是处理量大，但是粒度要求高，而且易磨损和易堵塞；利用筛网振动带动物料跳动进而实现物料钻隙分层分级的振动筛广泛应用于各选煤厂的物料分级作业中，代表性设备有直线振动筛。
在实际生产中，不同的应用状态下，直线振动筛机存在一些不足之处，并且会产生一些问题，严重的时候会影响生产的正常进行。现有振动筛结构整体性强，不易拆装，不易更换零部件，不便于维修；当实际生产需要不平衡激振力或者需要在筛面不同位置不同振幅的时候，现有振动筛的激振电机通过激振梁固定在筛箱侧板上，无法调节跨距或者与筛箱质心的相对位置，因而不能满足不平衡激振力的要求；现有振动筛由于机构固定，减振部件采用焊接的方式固定，不便于调节筛面倾角。
发明内容
发明目的：本发明的目的是针对现有直线振动筛机存在的技术问题，提供一种模块式变跨距变振幅大型振动筛，其结构紧凑，在满足不同工况条件要求的同时结构稳定，可以方便地调节筛面倾角、激振电机跨距、激振力大小以及激振力与筛箱质心的相对位置，提高筛分精度。同时，采用模块化安装方式，便于拆卸，方便维护，设备的功耗低。
为了实现上述目的，本发明采用了如下的技术方案：一种模块式变跨距变振幅大型振动筛，包括筛箱，筛箱设有激振梁，在激振梁上安装激振电机，筛箱下部设置支架，所述筛箱包括相对设置的两块筛箱侧板，在箱侧板下端固定筛面，箱侧板上设有水平卡槽，两块筛箱侧板之间设有两根激振梁，激振梁两端设有竖直卡槽，将调节螺栓穿入水平卡槽和竖直卡槽内，使激振梁与箱侧板固定，所述支架沿筛箱纵向间隔设置至少两组，支架设有支架高度调节结构，相邻两组支架之间设有支架跨距调节机构。
进一步的，所述两根激振梁的其中一根靠近筛箱的入料端，另一根靠近筛箱的排料端。
进一步的，所述筛箱的入料端和排料端均设有加强梁，加强梁两端通过锁紧螺栓与箱侧板固定。
进一步的，所述支架为两组，其中一组支架位于筛箱的入料端，另一组支架位于筛 箱的排料端。
进一步的，所述支架高度调节结构包括支架上调节块和支架下调节块，支架下调节块顶面和支架上调节块底面均设有竖向螺纹孔，支架设有与竖向螺纹孔相匹配的外螺纹；所述支架跨距调节机构包括调节螺杆，支架下调节块侧面设有与调节螺杆相匹配的横向螺纹孔。
进一步的，所述筛箱与支架之间设有减振弹簧。
有益效果：(1)各零部件均采用模块化结构，相邻模块采用螺栓夹紧固定；(2)通过改变两根激振梁的间距，实现激振梁跨距调节；(3)可通过调节激振电机内偏心块夹角角度来调节激振力大小，进而实现入料端和排料端振幅变化；(4)通过调节两根激振梁的位置和高度，实现激振电机与筛箱质心相对位置的变化；(5)通过分别调节入料端和排料端支架的支架高度调节结构以及支架跨距调节机构，实现筛面的不同倾角的调节。
附图说明
图1是本发明振动筛的主视图；
图2是本发明振动筛的左视图；
图3是本发明振动筛的俯视图；
图4是本发明振动筛的轴侧图。
图中：1-筛箱；1-1-筛箱侧板；2-激振电机；3-激振梁；4-加强梁；5-支架；6-入料端；7-筛面；8-排料端；9-调节螺栓；10-调节螺杆；11-水平卡槽；12-竖直卡槽；13-支架下调节块；14-支架上调节块；15-减振弹簧。
具体实施方式：
下面结合附图对本发明做更进一步的解释。
如图1至4所示，本发明的一种模块式变跨距变振幅大型振动筛，包括筛箱1，所述筛箱1包括相对设置的两块筛箱侧板1-1，在箱侧板1-1下端固定筛面7，由筛箱侧板1-1和筛面7构成了筛箱1的主体结构，筛箱1的一端为入料端6，筛箱1的另一端为排料端8。
箱侧板1-1上设有水平卡槽11，两块筛箱侧板1-1之间设有两根激振梁3，两根激振梁3的其中一根靠近筛箱1的入料端6，另一根靠近筛箱1的排料端8。激振梁3两端设有竖直卡槽12，将调节螺栓9穿入水平卡槽11和竖直卡槽12内，使激振梁3与箱侧板1-1固定，在激振梁3上安装激振电机2。为了保证筛箱1整体强度，所述筛箱1的入料端6和排料端8均设有加强梁4，加强梁4两端通过锁紧螺栓与箱侧板1-1固定。
筛箱1下部设置两组支架5，其中一组支架5位于筛箱1的入料端6，另一组支架5位于筛箱1的排料端8。支架5设有支架高度调节结构，相邻两组支架5之间设有支架 跨距调节机构。所述支架高度调节结构包括支架上调节块14和支架下调节块13，支架下调节块13顶面和支架上调节块14底面均设有竖向螺纹孔，支架5设有与竖向螺纹孔相匹配的外螺纹，支架5上下两端旋入竖向螺纹孔内。所述支架跨距调节机构包括调节螺杆10，支架下调节块13侧面设有与调节螺杆10相匹配的横向螺纹孔，调节螺杆10两端旋入横向螺纹孔内。通过转动支架5，可以支架5自身高度，通过转动调节螺杆10，可以调节两组支架5的间距。为了提高筛箱1的自身稳定性，所述筛箱1与支架5之间设有减振弹簧15。
振动筛工作时，筛箱1在激振电机2的带动下振动，物料由入料端6给入经筛面7筛分分级后粗粒物料经排料端8排出，细粒物料透过筛面7进入筛下，成为细粒产品。固定在激振梁3上的激振电机2是物料钻隙分层的关键，可以根据需要来调节靠近入料端6和排料端8的激振电机2里面的偏心块夹角来实现激振力的大小变化。激振梁3通过调节螺栓9加紧固定在筛箱侧板1-1上。在水平卡槽11内滑动调节螺栓9，使两个激振电机2之间的跨距在一定范围内实现变化。在竖直卡槽12内滑动加紧螺栓，实现两个激振电机在垂直方向上的高度变化，进而使激振力与筛箱1质心相对位置变化，满足不平衡激振力的要求。筛面7通常要求与水平面之间有一定的夹角，通过入料端和出料端的支架5上的支架高度调节结构分别调节两组支架5的高度，实现不同的倾角。调节筛面7倾角时，需要同时调支架跨距调节机构，使两组支架5达到静态平衡。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (6)

  1. 一种模块式变跨距变振幅大型振动筛，包括筛箱(1)，筛箱(1)设有激振梁(3)，在激振梁(3)上安装激振电机(2)，筛箱(1)下部设置支架(5)，其特征在于：所述筛箱(1)包括相对设置的两块筛箱侧板(1-1)，在箱侧板(1-1)下端固定筛面(7)，箱侧板(1-1)上设有水平卡槽(11)，两块筛箱侧板(1-1)之间设有两根激振梁(3)，激振梁(3)两端设有竖直卡槽(12)，将调节螺栓(9)穿入水平卡槽(11)和竖直卡槽(12)内，使激振梁(3)与箱侧板(1-1)固定，所述支架(5)沿筛箱(1)纵向间隔设置至少两组，支架(5)设有支架高度调节结构，相邻两组支架(5)之间设有支架跨距调节机构。
  2. 根据权利要求1所述的一种模块式变跨距变振幅大型振动筛，其特征在于：所述两根激振梁(3)的其中一根靠近筛箱(1)的入料端(6)，另一根靠近筛箱(1)的排料端(8)。
  3. 根据权利要求1所述的一种模块式变跨距变振幅大型振动筛，其特征在于：所述筛箱(1)的入料端(6)和排料端(8)均设有加强梁(4)，加强梁(4)两端通过锁紧螺栓与箱侧板(1-1)固定。
  4. 根据权利要求1所述的一种模块式变跨距变振幅大型振动筛，其特征在于：所述支架(5)为两组，其中一组支架(5)位于筛箱(1)的入料端(6)，另一组支架(5)位于筛箱(1)的排料端(8)。
  5. 根据权利要求1所述的一种模块式变跨距变振幅大型振动筛，其特征在于：所述支架高度调节结构包括支架上调节块(14)和支架下调节块(13)，支架下调节块(13)顶面和支架上调节块(14)底面均设有竖向螺纹孔，支架(5)设有与竖向螺纹孔相匹配的外螺纹；所述支架跨距调节机构包括调节螺杆(10)，支架下调节块(13)侧面设有与调节螺杆(10)相匹配的横向螺纹孔。
  6. 根据权利要求1所述的一种模块式变跨距变振幅大型振动筛，其特征在于：所述筛箱(1)与支架(5)之间设有减振弹簧(15)。
PCT/CN2016/083577 2016-03-30 2016-05-27 一种模块式变跨距变振幅大型振动筛 WO2017166413A1 (zh)

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