CN111842126B - Spiral conical track screening machine and screening method - Google Patents

Spiral conical track screening machine and screening method Download PDF

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Publication number
CN111842126B
CN111842126B CN202010792058.XA CN202010792058A CN111842126B CN 111842126 B CN111842126 B CN 111842126B CN 202010792058 A CN202010792058 A CN 202010792058A CN 111842126 B CN111842126 B CN 111842126B
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China
Prior art keywords
screen
vibrator
screening
machine
vibration
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CN202010792058.XA
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Chinese (zh)
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CN111842126A (en
Inventor
徐文彬
黄涛
温家暖
王大明
李素妍
王琦玮
徐浩博
杨鑫
英培贺
刘明明
于运波
齐鑫
冯微微
张媛
王晓枫
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Anshan Anzhong Mining Machinery Co ltd
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Anshan Anzhong Mining Machinery Co ltd
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Publication of CN111842126A publication Critical patent/CN111842126A/en
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Classifications

    • 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
    • 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
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Abstract

A spiral conical track screening machine and a screening method belong to the field of vibration screening machinery and solve the problem of screening materials difficult to screen and materials easy to block holes. A vibrating motor is arranged above a screen frame between the feeding end of the screen and the vibration reference gravity center G of the screen and on a main beam arranged between two side plates; the vibrating motor is positioned in the middle of the main beam, and the axial lead of the vibrating motor is parallel to the side plate of the screen frame. A large vibrator is arranged at the feeding end of the screen machine, a small vibrator is arranged at the discharging end of the screen machine, and the rotation directions are opposite; the mass of the eccentric block on the large vibrator is larger than that of the eccentric block on the small vibrator. The large vibrator and the small vibrator are long shaft vibrators which transversely penetrate through the screen frame and are arranged on two side plates below the screen surface through bearings and bearing seats. The screening machine has the characteristics of compact structure, stable operation, high screening efficiency and the screening principle conforming to the distribution rule of the material layers on the screening surface. The method is suitable for classification of difficult-to-screen materials in various fields and screening of the clamping Kong Yanchong materials.

Description

Spiral conical track screening machine and screening method
Technical Field
The invention belongs to the field of vibration screening machinery, and mainly relates to a spiral conical track screening machine capable of comprehensively screening materials and a screening method.
Background
In the existing screening machines, there are three conventional vibration trajectories of the screening machine: straight lines, circles and ellipses. All three tracks occur in the longitudinal plane of the vibrating screen, so that the material particles only have a movement throwing force in the longitudinal plane, and the material particles are not stressed in the transverse direction of the vibrating screen. Therefore, once the particles difficult to screen or the irregular critical particles are clamped in the holes of the screen, the suitable stress angle is difficult to find to pop up or fall off, so that the blocking holes are formed, and the screening efficiency is affected. In addition, the material is from the feeding end to the discharging end of the screen machine, the material layer is from thick to thin, the material layer is difficult to uniformly loosen, the effective utilization area of the screen surface is low, and the screening efficiency is also influenced.
The Chinese patent number 200910208010.3 is a spiral track vibrating screen, the action lines of the combination force of the linear vibration source and the transverse vibration source pass through the mass center of the screen box, the formed movement track is a cylindrical spiral track, the movement track from the feeding end to the discharging end is equal in size, and the screening effect is poor under the condition of thicker material layer at the feeding end, so that the screening efficiency is not improved. The Chinese patent No. 201610198022.2, conical trace vibrating screen, provides a vibrating screen with transverse force, and the vibrating screen has no longitudinal acting force, so that the movement of materials is limited by the inclination angle of the screen surface, and the screening efficiency is limited. In addition, the elastic rod connected with the spherical support is arranged at the discharge end of the screen, so that the vibration amplitude of the discharge end of the screen is limited while a conical track is formed, and the screening efficiency is very low. The existing vibration sieve with decreasing amplitude is suitable for sieving the thickness of a material layer, and cannot realize omnibearing sieving due to no transverse acting force, so that the problem of sieving irregular materials cannot be solved.
Disclosure of Invention
The invention aims to provide a spiral conical trajectory screening machine and a screening method.
The invention is realized by the following technical scheme, comprising a screen frame, a screen surface, a vibrator, a vibration reduction supporting device and a motor transmission device, and is characterized in that:
a vibrating motor is arranged above a screen frame between the feeding end of the screen and the vibration reference gravity center G of the screen and on a main beam arranged between two side plates; the vibrating motor is positioned in the middle of the main beam, and the axial lead of the vibrating motor is parallel to the side plate of the screen frame;
a large vibrator is arranged at the feeding end of the screen machine, a small vibrator is arranged at the discharging end of the screen machine, and the two vibrators are respectively positioned at two sides of the reference vibration gravity center G of the screen machine and have opposite rotation directions; the mass of the eccentric block on the large vibrator is larger than that of the eccentric block on the small vibrator; the large vibrator and the small vibrator are long shaft vibrators which transversely penetrate through the screen frame and are arranged on two side plates below the screen surface through bearings and bearing seats; each vibrator is provided with two eccentric blocks which are positioned at two ends of a vibrating shaft, and the vibrating shaft is connected with a motor transmission device.
The distance between the large vibrator and the small vibrator is more than or equal to one half of the length of the screen frame.
A device for longitudinally adjusting the position of the vibrating motor is arranged between the vibrator mounting main beam and the vibrating motor.
The inclination angle of the screen surface and the horizontal plane is 15-30 degrees; in order to enhance the lateral stability of the operation of the screening machine, lateral dampers are provided on the support of the vibration damping support means.
The screening method of the invention comprises the following steps: the vibrating force generated by the vibrating motor causes the screen frame and the screen surface to do circular track motion in the transverse section of the screen machine, and the size of the circular track value changes from the feeding end to the discharging end of the screen machine in a descending way; the screen frame and the screen surface do linear track motion in the longitudinal section of the screen machine due to the vibration resultant force generated by the large vibrator and the small vibrator, and the size of the linear track value is changed in a descending way from the feeding end to the discharging end of the screen machine; the screen machine moves in spiral conical track by the resultant vibration force generated by the vibration motor, the large vibrator and the small vibrator, and the track value is distributed in a conical decreasing way from the feeding end to the discharging end of the screen machine; the material particles on the screen surface have movement throwing force in the vertical direction, the longitudinal direction and the transverse direction of the screen surface, and the throwing force in all directions transits from large to small from a feeding end to a discharging end; along with the gradual thinning of the material layer from the feeding end to the discharging end, the amplitude and the vibration force of the screen surface are gradually reduced, so that the comprehensive fine screening which accords with the distribution rule of the material layer is realized.
The invention has the beneficial effects that in order to adapt to the screening state of the materials on the screening surface from more to less and the material layers from thick to thin, the screening method and the equipment for the spiral conical omnibearing vibration track of the screening machine with the amplitude from large to small and the vibration intensity from large to small are selected. The blocking phenomenon of the materials is greatly reduced, the screening effect and the screening efficiency are extremely high, and the effective screening efficiency in the length direction of the screen surface is improved. The vibration motor is arranged between the feeding end of the screen machine and the vibration center of gravity of the screen machine, and the position of the vibration motor can be adjusted along the longitudinal direction of the screen machine at any time according to the thickness of the material layer on the screen surface of the feeding end and the feeding working condition. Under the condition of not replacing the vibration motor, conical vibration tracks with different sizes can be obtained. The spiral conical track motion of the material particles on the screen surface can be realized, the problems of size classification of materials difficult to screen, critical particle clamping holes and easy accumulation of materials at the feeding end of the screen machine are solved, and the screening probability is improved. The omnibearing material screening of the three-dimensional projectile motion can be realized. The screening machine has the characteristics of compact structure, stable operation, high screening efficiency and the screening principle conforming to the distribution rule of the material layers on the screening surface. The method is suitable for classification of difficult-to-screen materials in various fields and screening of the clamping Kong Yanchong materials.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a view in the direction C of FIG. 1;
in the figure, a side plate 1, a large vibrator 2, a mounting girder 3, a vibrating motor 4, a screen surface 5, a small vibrator 6, a vibration reduction supporting device 7 and a motor transmission device 8 are arranged; g is the gravity center of the screen, A is the feeding end of the screen, and B is the discharging end of the screen.
Detailed Description
The following describes specific embodiments of the present invention with reference to the drawings:
comprises a screen frame, a screen surface 5, a vibrator, a vibration reduction supporting device 7 and a motor transmission device 8. A vibrating motor 4 is arranged above a screen frame between the feeding end of the screen and the vibration reference gravity center G of the screen and on a main beam 3 arranged between two side plates 1; the vibrating motor 4 is positioned in the middle of the main beam 3, and the axial lead of the vibrating motor 4 is parallel to the side plate 1 of the screen frame. A large vibrator 2 is arranged at the feeding end of the screen machine, a small vibrator 6 is arranged at the discharging end of the screen machine, and the two vibrators are respectively positioned at two sides of the reference vibration gravity center G of the screen machine and have opposite rotation directions; the action line of the vibration resultant force of the two vibrators passes through the screen machine reference vibration center of gravity G. The mass of the eccentric mass on the large vibrator 2 is greater than the mass of the eccentric mass on the small vibrator 6. The large vibrator 2 and the small vibrator 6 are long shaft vibrators which transversely penetrate through the screen frame and are arranged on two side plates 1 below the screen surface 5 through bearings and bearing seats. Each vibrator is provided with two eccentric blocks which are positioned at two ends of a vibrating shaft, and the vibrating shaft is connected with a motor transmission device 8.
The distance between the large vibrator 2 and the small vibrator 6 is equal to one half of the length of the screen frame. A device for longitudinally adjusting the position of the vibrating motor is arranged between the vibrator mounting main beam 3 and the vibrating motor 4. The inclination angle of the screening surface 5 to the horizontal is 25 deg.. A transverse damper is provided on the support of the vibration damping support 7.

Claims (6)

1. The utility model provides a spiral conical orbit screening machine, includes reel, screening surface (5), vibrator, damping strutting arrangement (7) and motor drive (8), characterized by:
a vibrating motor (4) is arranged above a screen frame between the feeding end of the screen and the vibration reference center G of the screen and on a main beam (3) arranged between two side plates (1); the vibrating motor (4) is positioned in the middle of the main beam (3), and the axial lead of the vibrating motor (4) is parallel to the side plate (1) of the screen frame;
a large vibrator (2) is arranged at the feeding end of the screen machine, a small vibrator (6) is arranged at the discharging end of the screen machine, and the two vibrators are respectively positioned at two sides of the vibration reference gravity center G of the screen machine and have opposite rotation directions; the mass of the eccentric block on the large vibrator (2) is larger than that of the eccentric block on the small vibrator (6); the large vibrator (2) and the small vibrator (6) are long-shaft vibrators which transversely penetrate through the screen frame and are arranged on side plates (1) on two sides below the screen surface (5) through bearings and bearing seats; each vibrator is provided with two eccentric blocks which are positioned at two ends of a vibrating shaft, and the vibrating shaft is connected with a motor transmission device (8).
2. The screening method of the spiral cone trajectory screening machine according to claim 1, wherein: the vibration force generated by the vibration motor (4) causes the screen frame and the screen surface (5) to do circular track motion in the transverse section of the screen machine, and the size of the circular track value is changed in a descending way from the feeding end to the discharging end of the screen machine; the combined vibration force generated by the large vibrator (2) and the small vibrator (6) causes the screen frame and the screen surface (5) to do linear track motion in the longitudinal section of the screen machine, and the magnitude of the linear track value changes from the feeding end to the discharging end of the screen machine in a descending manner; the screen machine moves in a spiral conical track by the resultant vibration force generated by the vibration motor (4), the large vibrator (2) and the small vibrator (6), and the track value is distributed in a conical decreasing manner from the feeding end to the discharging end of the screen machine; the material particles on the screen surface (5) have movement throwing force in the vertical direction, the longitudinal direction and the transverse direction of the screen surface (5), and the throwing force in all directions transits from large to small from a feeding end to a discharging end; along with the gradual thinning of the material layer from the feeding end to the discharging end, the amplitude and the vibration force of the screen surface (5) are also gradually reduced, so that the comprehensive fine screening which accords with the distribution rule of the material layer is realized.
3. A spiral cone trajectory screen as claimed in claim 1 wherein: the distance between the large vibrator (2) and the small vibrator (6) is more than or equal to one half of the length of the screen frame.
4. A spiral cone trajectory screen as claimed in claim 1 wherein: a device for longitudinally adjusting the position of the vibrating motor is arranged between the vibrator mounting main beam (3) and the vibrating motor (4).
5. A spiral cone trajectory screen as claimed in claim 1 wherein: the inclination angle of the screen surface (5) and the horizontal plane is 15-30 degrees.
6. A spiral cone trajectory screen as claimed in claim 1 wherein: a transverse damper is arranged on the support of the vibration reduction supporting device (7).
CN202010792058.XA 2020-08-08 2020-08-08 Spiral conical track screening machine and screening method Active CN111842126B (en)

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CN202010792058.XA CN111842126B (en) 2020-08-08 2020-08-08 Spiral conical track screening machine and screening method

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Application Number Priority Date Filing Date Title
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CN111842126B true CN111842126B (en) 2023-09-01

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Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1034085A (en) * 1996-07-30 1998-02-10 Osaka Gas Co Ltd Screen
CN1820860A (en) * 2006-03-30 2006-08-23 曾兴民 Synchronous screw sieving method and its device
CN2832330Y (en) * 2005-09-29 2006-11-01 李卫东 Device for slurry clarification and particle reclamation
CN201404915Y (en) * 2009-05-06 2010-02-17 徐州市赫尔斯采制样设备有限公司 Slip sieve
CN101690930A (en) * 2009-10-15 2010-04-07 鞍山重型矿山机器股份有限公司 Vibrating screen with spiral track
CN202212341U (en) * 2011-07-11 2012-05-09 刘方旭 Spirally-vibrating conical vibrating screen
CN103878118A (en) * 2014-04-15 2014-06-25 安徽理工大学 Novel elliptical equal-thickness vibrating screen
CN104070010A (en) * 2014-07-23 2014-10-01 姬玉安 Multi-vibration type hydraulic vibrating screen
CN104492617A (en) * 2014-12-12 2015-04-08 佛山市绿建环保科技有限公司 Slurry sediment diversion machine for treating waste materials
CN104624492A (en) * 2015-02-28 2015-05-20 陕西三沅重工发展股份有限公司 Compound vibrating screen and compound vibration providing method
CN204503546U (en) * 2015-01-20 2015-07-29 杭州费勒韦尔机械有限公司 A kind of double-shaft circular vibrating screen
CN106179959A (en) * 2016-08-25 2016-12-07 西南石油大学 Three short shock electric machine elliptically vibrating screens of torsionspring coupling
CN110877010A (en) * 2019-12-05 2020-03-13 新乡市三圆堂机械有限公司 High-precision square swing screen
CN212468813U (en) * 2020-08-08 2021-02-05 鞍山重型矿山机器股份有限公司 Spiral conical track sieving machine

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1034085A (en) * 1996-07-30 1998-02-10 Osaka Gas Co Ltd Screen
CN2832330Y (en) * 2005-09-29 2006-11-01 李卫东 Device for slurry clarification and particle reclamation
CN1820860A (en) * 2006-03-30 2006-08-23 曾兴民 Synchronous screw sieving method and its device
CN201404915Y (en) * 2009-05-06 2010-02-17 徐州市赫尔斯采制样设备有限公司 Slip sieve
CN101690930A (en) * 2009-10-15 2010-04-07 鞍山重型矿山机器股份有限公司 Vibrating screen with spiral track
CN202212341U (en) * 2011-07-11 2012-05-09 刘方旭 Spirally-vibrating conical vibrating screen
CN103878118A (en) * 2014-04-15 2014-06-25 安徽理工大学 Novel elliptical equal-thickness vibrating screen
CN104070010A (en) * 2014-07-23 2014-10-01 姬玉安 Multi-vibration type hydraulic vibrating screen
CN104492617A (en) * 2014-12-12 2015-04-08 佛山市绿建环保科技有限公司 Slurry sediment diversion machine for treating waste materials
CN204503546U (en) * 2015-01-20 2015-07-29 杭州费勒韦尔机械有限公司 A kind of double-shaft circular vibrating screen
CN104624492A (en) * 2015-02-28 2015-05-20 陕西三沅重工发展股份有限公司 Compound vibrating screen and compound vibration providing method
CN106179959A (en) * 2016-08-25 2016-12-07 西南石油大学 Three short shock electric machine elliptically vibrating screens of torsionspring coupling
CN110877010A (en) * 2019-12-05 2020-03-13 新乡市三圆堂机械有限公司 High-precision square swing screen
CN212468813U (en) * 2020-08-08 2021-02-05 鞍山重型矿山机器股份有限公司 Spiral conical track sieving machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
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并联运动振动筛的筛分运动规律及其轨迹的研究;沈惠平等;机械设计;第25卷(第12期);20-23 *

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