CN111167701B - A modular rigid-flexible coupled variable elastic equal thickness screen - Google Patents
A modular rigid-flexible coupled variable elastic equal thickness screenInfo
- Publication number
- CN111167701B CN111167701B CN201911237603.2A CN201911237603A CN111167701B CN 111167701 B CN111167701 B CN 111167701B CN 201911237603 A CN201911237603 A CN 201911237603A CN 111167701 B CN111167701 B CN 111167701B
- Authority
- CN
- China
- Prior art keywords
- screen
- screen surface
- flexible polyurethane
- rigid
- flexible
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
-
- 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
- B07B1/4645—Screening surfaces built up of modular elements
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
一种模块式刚柔耦合变弹性等厚筛，包括筛箱本体、弹性支座和底座支架，筛箱本体包括两个相对设置的筛箱侧板和筛面，两个所述筛箱侧板之间的顶部、中部和底部分别安装有激振梁、加强梁和承重梁，筛面安装在承重梁上，为刚柔耦合变弹性筛面，包括呈矩形的刚性金属骨架、柔性聚氨酯筛面，柔性聚氨酯筛面包覆在金属骨架外部，柔性聚氨酯筛面的底面上还设置有柔性聚氨酯加强筋；刚性金属骨架、柔性聚氨酯筛面和柔性聚氨酯加强筋为一体成型结构；柔性聚氨酯筛面的弹性模量、硬度沿筛面长度方向呈一定变化规律分布。本发明可以有效解决粘湿料群筛分过程中入料端料群堆积问题，具有结构简单、可靠性高、筛面更换方便、处理量大、筛分效率高的优点。
A modular rigid-flexible coupled variable elastic equal-thickness screen includes a screen box body, an elastic support, and a base bracket. The screen box body includes two opposing screen box side plates and a screen surface. A vibration beam, a reinforcing beam, and a load-bearing beam are respectively installed at the top, middle, and bottom between the two screen box side plates. The screen surface is mounted on the load-bearing beam and is a rigid-flexible coupled variable elastic screen surface, comprising a rectangular rigid metal frame and a flexible polyurethane screen surface. The flexible polyurethane screen surface covers the outside of the metal frame, and flexible polyurethane reinforcing ribs are also provided on the bottom surface of the flexible polyurethane screen surface. The rigid metal frame, flexible polyurethane screen surface, and flexible polyurethane reinforcing ribs are integrally formed. The elastic modulus and hardness of the flexible polyurethane screen surface exhibit a certain variation distribution along the length of the screen surface. This invention can effectively solve the problem of material accumulation at the feed end during the screening of sticky and wet materials, and has the advantages of simple structure, high reliability, convenient screen surface replacement, large processing capacity, and high screening efficiency.
Description
Technical Field
The invention relates to an equal-thickness sieve, in particular to a modular rigid-flexible coupling variable-elasticity equal-thickness sieve, and belongs to the technical field of material sieving.
Background
Screening is a key link in coal and mineral separation processing engineering, and is widely applied to classification, pre-desliming, product dehydration and medium removal operations. The vibration screen with single dip angle and equal amplitude has the same vibration amplitude and vibration intensity from the feeding end to the discharging end, the materials at the feeding end are easy to accumulate, the thickness of the material layer on the screen is large, the layering of the materials is slow, the material layer at the discharging end is rapidly thinned, the screening time of the difficult-to-screen particles is short, the screening amount is small, the screening surface utilization rate is low, and the screening effect is poor.
Through changing the throwing strength of different areas of the screen surface, the material group is given a larger acceleration at the feeding end, so that the material group has a larger movement speed, material layering is accelerated, the material group is given a smaller acceleration at the discharging end, the movement speed is slowed down, the fine particle sieving rate is increased, the thickness of the material group is uniformly distributed along the length direction of the whole screen surface, and uniform thickness sieving of the material group is realized. The throwing strength can be changed by adjusting the inclination angles of different areas of the screen surface or the vibration amplitude perpendicular to the direction of the screen surface, and the current equal-thickness screening is mainly realized by a multi-section inclination-angle-changing screen surface structure and a multi-axis vibration excitation structure. The multi-section variable-dip-angle equal-thickness screen has good screening effect, but the screen body has a complex structure and large occupied space. The multi-axis excitation variable track equal-thickness screen has good screening effect, but the excitation structure is complex and is easy to fail.
Disclosure of Invention
The invention aims to provide a modular rigid-flexible coupling variable-elasticity equal-thickness sieve which is simple in structure, convenient to replace a sieve surface, high in utilization rate of the sieve surface, large in treatment capacity and good in sieving effect.
In order to achieve the aim, the invention adopts the following technical scheme that the modular rigid-flexible coupling variable elasticity equal-thickness screen comprises a screen box body, an elastic support and a base bracket, wherein the screen box body comprises two screen box side plates and a screen surface which are oppositely arranged, an excitation beam, a stiffening beam and a spandrel girder are respectively arranged at the top, the middle and the bottom between the two screen box side plates, the excitation beam is provided with an exciter, the screen surface is arranged on the spandrel girder which is arranged in parallel, one end of the screen surface is a feeding end, the other end of the screen surface is a discharging end, and the screen box body is fixed on the base bracket through the elastic support which is symmetrically arranged at the outer sides of the two screen box side plates;
The rigid-flexible coupling variable-elasticity screen surface comprises a rigid metal framework and a flexible polyurethane screen surface, wherein the rigid metal framework is rectangular, the flexible polyurethane screen surface is coated outside the rigid metal framework, flexible polyurethane reinforcing ribs are further arranged on the bottom surface of the flexible polyurethane screen surface, and the rigid metal framework, the flexible polyurethane screen surface and the flexible polyurethane reinforcing ribs are of an integrated structure;
the elastic modulus and the hardness of the flexible polyurethane screen surface are distributed in a certain change rule along the length direction of the screen surface, namely from a feeding end to a discharging end, the elastic modulus and the hardness of the front section screen surface of the whole flexible polyurethane screen surface are smaller than those of the middle section screen surface, and the elastic modulus and the hardness of the rear section screen surface are larger than those of the middle section screen surface.
Further, the elastic support comprises a screen box connecting piece, a damping spring and a support, wherein the screen box connecting piece is fixed on two screen box side plates, the damping spring is connected between the screen box connecting piece and the support, and the support is fixed on the base support.
The rigid-flexible coupling variable elastic screen surface has the beneficial effects that the rigid-flexible coupling variable elastic screen surface is integrally poured by the rigid metal framework structure and the flexible polyurethane material, the screen surface has high reliability, no hole blockage and convenient replacement, the uniform thickness screening of material groups can be realized by changing the elastic modulus and the hardness of the modular rigid-flexible coupling variable elastic screen surface and adapting to the material characteristics in the screening process, the screen machine has simple structure, high screen surface utilization rate, large treatment capacity and good screening effect, and the rigid-flexible coupling variable elastic screen surface is suitable for the efficient screening of wet materials such as coal, minerals, building material aggregates and the like.
Drawings
FIG. 1 is a schematic view of a three-dimensional structure of a modular rigid-flexible coupling variable-elasticity constant-thickness sieve according to the invention.
Fig. 2 is a top view of a rigid-flexible coupled variable elasticity screen surface of the present invention.
Fig. 3 is a schematic view of the internal structure of the rigid-flexible coupling variable elastic screening surface of the present invention.
Fig. 4 is a layout of a rigid-flexible coupling variable elastic screening surface of the present invention.
The vibration exciter comprises a vibration exciter 1, a screen box body 2, a vibration exciting beam 2-1, a reinforcing beam 2-2, a bearing beam 2-3, a screen box side plate 2-4, a screen surface 3, a rigid metal framework 3-1, a flexible polyurethane screen surface 3-2, a flexible polyurethane reinforcing rib 3-3, a spring support 4, a screen box connecting piece 4-1, a damping spring 4-2, a support 4-3 and a base support 5.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in figure 1, the modular rigid-flexible coupling variable-elasticity equal-thickness screen comprises a screen box body 2, an elastic support 4 and a base bracket 5, wherein the screen box body 2 comprises two screen box side plates 2-4 and a screen surface 3 which are oppositely arranged, an excitation beam 2-1, a reinforcement beam 2-2 and a spandrel girder 2-3 are respectively arranged at the top, the middle and the bottom between the two screen box side plates 2-4, an exciter 1 is arranged on the excitation beam 2-1,
The rigid-flexible coupling variable-elasticity screen surface 3 is arranged on a spandrel girder 2-3 which is arranged in parallel, one end of the screen surface 3 is a feeding end, the other end of the screen surface 3 is a discharging end, as shown in fig. 2-4, the screen surface 3 is a rigid-flexible coupling variable-elasticity screen surface, the rigid-flexible coupling variable-elasticity screen surface comprises a rigid metal framework 3-1 and a flexible polyurethane screen surface 3-2, the rigid metal framework 3-1 is rectangular, the flexible polyurethane screen surface 3-2 is coated outside the rigid metal framework 3-1, a flexible polyurethane reinforcing rib 3-3 is further arranged on the bottom surface of the flexible polyurethane screen surface 3-2, the rigid metal framework 3-1, the flexible polyurethane screen surface 3-2 and the flexible polyurethane reinforcing rib 3-3 are of an integrated structure, namely, the rigid metal framework 3-1 and the flexible polyurethane reinforcing rib 3-3 are integrally poured, the rigidity and the strength of the whole structure of the screen surface can be improved, and the problem of blocking a wet material group in the screening process can be effectively solved by the flexible polyurethane screen surface 3-2.
The elastic modulus and the hardness of the flexible polyurethane screen surface 3-2 are distributed in a certain change rule along the length direction of the screen surface, namely from a feeding end to a discharging end, the elastic modulus and the hardness of the front section screen surface of the whole flexible polyurethane screen surface 3-2 are smaller than those of the middle section screen surface, the elastic modulus and the hardness of the rear section screen surface are larger than those of the middle section screen surface, and the material characteristics are adapted to the screening process, so that the uniform thickness screening of a material group is realized.
The screen box body 2 is fixed on the base support 5 through the elastic support 4 symmetrically arranged on the outer sides of the two screen box side plates 2-4, in this embodiment, the elastic support 4 comprises a screen box connecting piece 4-1, vibration reduction springs 4-2 and a support 4-3, the screen box connecting piece 4-1 is fixed on the two screen box side plates 2-4, the vibration reduction springs 4-2 are connected between the screen box connecting piece 4-1 and the support 4-3, the vibration reduction springs 4-2 adopt one of metal springs, rubber springs and compound springs, and the support 4-3 is fixed on the base support 5.
Under the simple harmonic excitation effect of the vibration exciter 1, the elastic modulus and the hardness of the rigid-flexible coupling variable elastic screen surface in different areas of the material flow direction are different, the elastic modulus of the front screen surface is smaller than that of the middle screen surface, the elastic modulus of the rear screen surface is larger than that of the middle screen surface, the hardness of the rear screen surface is larger, and the deformation, the vibration intensity and the vibration amplitude of the front screen surface of the feeding end are larger than those of the rear screen surface of the discharging end. The material can obtain higher throwing strength at the feeding end, has higher movement speed, and is fast loose, layered and moved, the vibration strength of the screening surface of the discharging end is small, the throwing strength of the material is small, the moving speed is reduced, the screening time of the material is prolonged, the fine particle sieving rate is increased, the material layers are approximately equal in thickness along the length direction of the whole screening surface, and the equal-thickness screening of a material group is realized.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (2)
1. The utility model provides a rigid-flexible coupling variable elasticity equal-thickness screen, includes screen box body (2), elastic support (4) and base support (5), screen box body (2) are including two relative screen box curb plates (2-4) and screen surface (3) that set up, and vibration excitation beam (2-1), stiffening beam (2-2) and spandrel girder (2-3) are installed respectively to top, middle part and bottom between two screen box curb plates (2-4), install vibration exciter (1) on vibration excitation beam (2-1), screen surface (3) are installed on spandrel girder (2-3) of setting side by side, and screen surface (3) one end is the pan feeding end, and its other end is the discharge end, screen box body (2) are fixed on base support (5) through symmetrical arrangement in elastic support (4) of two screen box curb plates (2-4) outside,
The rigid-flexible coupling variable-elasticity screen surface comprises a rigid metal framework (3-1) and a flexible polyurethane screen surface (3-2), wherein the rigid metal framework (3-1) is rectangular, the flexible polyurethane screen surface (3-2) is coated outside the rigid metal framework (3-1), a flexible polyurethane reinforcing rib (3-3) is further arranged on the bottom surface of the flexible polyurethane screen surface (3-2), the rigid metal framework (3-1), the flexible polyurethane screen surface (3-2) and the flexible polyurethane reinforcing rib (3-3) are of an integrally formed structure, and are integrally cast, and the elastic modulus and the hardness of the flexible polyurethane screen surface (3-2) are distributed in a certain change rule along the length direction of the screen surface, namely, the elastic modulus and the hardness of the front section screen surface of the whole flexible polyurethane screen surface (3-2) are smaller than those of the middle section screen surface, and the elastic modulus and the hardness of the rear section screen surface are larger than those of the middle section screen surface.
2. A modular rigid-flexible coupling variable-elasticity isothickness screen as claimed in claim 1, wherein said elastic support (4) comprises a screen box connecting member (4-1), a damping spring (4-2) and a support (4-3), said screen box connecting member (4-1) being fixed to two of said screen box side plates (2-4), said damping spring (4-2) being connected between said screen box connecting member (4-1) and said support (4-3), said support (4-3) being fixed to said base frame (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911237603.2A CN111167701B (en) | 2019-12-05 | 2019-12-05 | A modular rigid-flexible coupled variable elastic equal thickness screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911237603.2A CN111167701B (en) | 2019-12-05 | 2019-12-05 | A modular rigid-flexible coupled variable elastic equal thickness screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111167701A CN111167701A (en) | 2020-05-19 |
| CN111167701B true CN111167701B (en) | 2025-11-18 |
Family
ID=70648769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911237603.2A Active CN111167701B (en) | 2019-12-05 | 2019-12-05 | A modular rigid-flexible coupled variable elastic equal thickness screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111167701B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3117838A1 (en) * | 1981-05-06 | 1982-11-25 | Hein, Lehmann AG, 4000 Düsseldorf | Screening device |
| CN2149981Y (en) * | 1993-01-16 | 1993-12-22 | 杨德平 | High-strength wearproof screen plate |
| CN107470136A (en) * | 2017-09-27 | 2017-12-15 | 中国矿业大学 | One kind becomes amplitude equal thick screen |
| CN208407635U (en) * | 2018-04-26 | 2019-01-22 | 河南森隆动物保健品有限公司 | A kind of oscillation screening plant |
| CN110468496A (en) * | 2019-09-23 | 2019-11-19 | 福建福联精编有限公司 | Pressure-proof elasticity modulus slitting warp-knitted spacer fabric and preparation method thereof |
| CN211964936U (en) * | 2019-12-05 | 2020-11-20 | 中国矿业大学 | Modular rigid-flexible coupling variable-elasticity equal-thickness screen |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106423834B (en) * | 2016-09-12 | 2018-08-03 | 中国矿业大学 | A kind of indeterminate modularization girder adjustable amplitude low-frequency vibration flip flop screen |
-
2019
- 2019-12-05 CN CN201911237603.2A patent/CN111167701B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3117838A1 (en) * | 1981-05-06 | 1982-11-25 | Hein, Lehmann AG, 4000 Düsseldorf | Screening device |
| CN2149981Y (en) * | 1993-01-16 | 1993-12-22 | 杨德平 | High-strength wearproof screen plate |
| CN107470136A (en) * | 2017-09-27 | 2017-12-15 | 中国矿业大学 | One kind becomes amplitude equal thick screen |
| CN208407635U (en) * | 2018-04-26 | 2019-01-22 | 河南森隆动物保健品有限公司 | A kind of oscillation screening plant |
| CN110468496A (en) * | 2019-09-23 | 2019-11-19 | 福建福联精编有限公司 | Pressure-proof elasticity modulus slitting warp-knitted spacer fabric and preparation method thereof |
| CN211964936U (en) * | 2019-12-05 | 2020-11-20 | 中国矿业大学 | Modular rigid-flexible coupling variable-elasticity equal-thickness screen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111167701A (en) | 2020-05-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111195595B (en) | A frequency stackable vibrating screen | |
| CN107537764B (en) | Rigid-flexible coupling elastic rod vibrating screen | |
| CN106964537B (en) | Distributing device, vibrating screen and asphalt mixing station | |
| CN107127149A (en) | A kind of totally-enclosed circular vibration flip flop screen of modularization | |
| CN107470136A (en) | One kind becomes amplitude equal thick screen | |
| CN104624485B (en) | It is quick to remove bulk materials oscillatory type flip flop screen | |
| CN104353608A (en) | Rotary vibrating screening machine | |
| CN101462111A (en) | One-graininess multi-stage oscillating screen | |
| CN201711281U (en) | High-frequency oval fine vibrating screen | |
| CN111167701B (en) | A modular rigid-flexible coupled variable elastic equal thickness screen | |
| CN201711282U (en) | High-frequency three-shaft elliptical vibrating fine screen | |
| CN1962088A (en) | Multi-unit combined vibration screen | |
| CN211964936U (en) | Modular rigid-flexible coupling variable-elasticity equal-thickness screen | |
| CN101966517A (en) | Variable motion trail screening method and vibrating mesh screen | |
| CN211964937U (en) | A modular variable diameter variable distance variable elastic equal thickness screen | |
| CN100348340C (en) | Reinforced sieve | |
| CN2395811Y (en) | Wobbling screen | |
| CN100594991C (en) | Vibrating screenless screening machine and its working method | |
| WO1998029202A1 (en) | A screenless vibrator separator | |
| CN113477512B (en) | Shaker | |
| CN111495572A (en) | Vibration spiral chute device | |
| CN207401729U (en) | A kind of change amplitude equal thick screen | |
| CN111842126A (en) | Spiral conical track screening machine and screening method | |
| KR101805969B1 (en) | Method and device for fractionating bulk material | |
| CN201871481U (en) | Multilayer high-frequency vibrating fine screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |