CN106944339B - Vibrating screen with floatable screen surface during working and screening method - Google Patents
Vibrating screen with floatable screen surface during working and screening method Download PDFInfo
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- CN106944339B CN106944339B CN201710318047.6A CN201710318047A CN106944339B CN 106944339 B CN106944339 B CN 106944339B CN 201710318047 A CN201710318047 A CN 201710318047A CN 106944339 B CN106944339 B CN 106944339B
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- screen
- vibrating
- bracket
- screen surface
- vibration
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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
- B07B1/288—Tumbling screens
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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
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
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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
- B07B1/46—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
Abstract
A vibrating screen with a suspendable screen surface and a screening method thereof belong to the technical field of material screening, the screen surface is placed on a vibrating bracket, the vibrating bracket vibrates under the action of a vibration source, and the movement of a screening section of the screen surface in the vibration direction of the vibrating bracket is not limited; the vibrating bracket can continuously throw up the screen surface by continuously vibrating the screen surface and adjusting the excitation intensity of the excitation source, a suspension space can be continuously formed between the vibrating bracket and the screen surface, and materials on the screen surface are continuously thrown up and screened by the screen surface.
Description
Technical Field
The invention relates to the technical field of material screening, in particular to a vibrating screen with a floatable screen surface during working and a screening method.
Background
The screening equipment is an important equipment necessary for industrial departments such as mines, ore dressing, coal dressing, building materials, thermal power plants, chemical industry and the like, and the performance of the screening equipment directly influences the production capacity and technical and economic indexes of the industries.
The screen surface of current shale shaker is generally fixed on the screen box of shale shaker, realizes the screening of material under the effect of excitation source, and current shale shaker has following problem: in the actual screening process, the screen surface vibrates along with the vibration of the screen box of the vibrating screen, relative acceleration hardly exists between the screen surface and the screen box of the vibrating screen, the screen box of the vibrating screen cannot shake the screen surface, and the screening effect of the screen surface on materials is poor; in addition, in the actual screening process, the material critical particles easily block the sieve holes of the sieve surface, so that the screening effect of the sieve surface is affected, and in order to solve the problem that the sieve holes are blocked by the material critical particles, a beating device for blocking the sieve surface is generally additionally arranged, so that the structure is complex; in addition, when the sieve sieves the great material of viscidity, the material is glued on the sieve face very easily, influences the screening of sieve face. This is a disadvantage of the prior art.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art, and provides the vibrating screen with the suspended screen surface and the screening method thereof, wherein the vibrating screen has good screening effect and high screening efficiency, and can effectively remove critical particles of materials clamped in screen holes, thereby avoiding the blockage of the screen holes.
The scheme is realized by the following technical measures: a screening method of a vibrating screen with a suspended screen surface in operation comprises the steps of placing the screen surface on a vibrating bracket, vibrating the vibrating bracket under the action of a vibration source, and enabling a screening section of the screen surface to move in the vibration direction of the vibrating bracket without limitation; the vibrating bracket continuously shakes the screen surface, the vibration intensity of the vibration source is adjusted, the vibrating bracket can continuously throw the screen surface, a suspension space can be continuously formed between the vibrating bracket and the screen surface, materials on the screen surface are continuously thrown by the screen surface, and the materials on the screen surface are continuously screened by the screen surface.
By adopting the technical scheme, the screening section of the screen surface is not limited in the vibration direction of the vibrating bracket, when the vibrating bracket throws the screen surface, different instantaneous acceleration exists between the vibrating bracket and the screen surface, the vibrating bracket can continuously impact and vibrate the screen surface, and the material critical particles clamped in the screen holes can be thrown out, so that the blockage of the screen holes by the material critical particles is effectively avoided; in the normal screening process, a suspension space can be continuously formed between the vibrating bracket and the screen surface, and meanwhile, materials roll and layer on the screen surface, so that the screening effect and the screening efficiency of the screen surface are effectively enhanced; in addition, when sieving the great material of viscidity, shake and shake the carrier and constantly strike the screen surface, can effectually avoid viscidity material to glue on the screen surface.
The screening section of the screening surface is not fixedly connected with the vibrating bracket;
one end of the screen surface is hinged with a foundation or a vibrating bracket or a screen box of the vibrating screen;
or the screen surface is connected with a foundation or a vibrating bracket or a screen box of the vibrating screen through a flexible connecting piece;
or a baffle plate for preventing the screen surface from sliding off is arranged on the screen box of the vibrating screen.
By adopting the technical scheme, the screening section of the screening surface is not limited in the vibrating direction of the vibrating bracket when being thrown up by the vibrating bracket, and the screening surface cannot slide along with the vibration or the running of materials in other directions except the vibrating direction of the vibrating bracket. The flexible connecting piece can adopt a steel wire rope or an elastic rope and the like.
And a blanking channel for blanking of the screen is arranged on the vibrating bracket.
By adopting the technical scheme, the screen blanking can fall from the blanking channel of the vibrating bracket.
Preferably, the screening surface is a flexible screening surface.
By adopting the technical scheme, the screen surface adopts the flexible screen surface, when the vibration bracket impacts the screen surface, the screen holes of the screen surface are easy to deform, the material critical particles clamped on the screen holes are dislocated along with the deformation of the screen holes, and the material critical particles clamped on the screen holes are easier to remove, so that the blockage of the screen holes is effectively prevented.
Preferably, the rapping surface of the rapping bracket, which is in contact with the screen surface, and/or the lower surface of the screen surface, which is in contact with the rapping bracket, is provided with rapping protrusions.
By adopting the technical scheme, the vibrating and beating brackets are arranged at different positions at different moments, and especially when the flexible screen surface is adopted, the screen surface can generate local deformation, so that the material critical particles clamped in the screen holes can be removed more conveniently.
The utility model provides a but during operation screen surface suspension type shale shaker, includes screen surface, shakes bracket and excitation source, shake the bracket and shake under the effect of excitation source, the screen surface is placed on shaking the bracket, the screen surface screen section is unrestricted in the ascending motion of the vibration direction of shake the bracket.
By adopting the technical scheme, the screening section of the screen surface is not limited in the vibration direction of the vibrating bracket, when the vibrating bracket throws the screen surface, different instantaneous acceleration exists between the vibrating bracket and the screen surface, the vibrating bracket can continuously impact and vibrate the screen surface, and the material critical particles clamped in the screen holes can be thrown out, so that the blockage of the screen holes by the material critical particles is effectively avoided; in the normal screening process, a suspension space can be continuously formed between the vibrating bracket and the screen surface, and meanwhile, materials roll and layer on the screen surface, so that the screening effect and the screening efficiency of the screen surface are effectively enhanced; in addition, when sieving the great material of viscidity, shake and shake the carrier and constantly strike the screen surface, can effectually avoid viscidity material to glue on the screen surface.
The screening section of the screening surface is not fixedly connected with the vibrating bracket;
one end of the screen surface is hinged with a foundation or a vibrating bracket or a screen box of the vibrating screen;
or the screen surface is connected with a foundation or a vibrating bracket or a screen box of the vibrating screen through a flexible connecting piece;
or a baffle plate for preventing the screen surface from sliding off is arranged on the screen box of the vibrating screen.
By adopting the technical scheme, the screening section of the screening surface is not limited in the vibrating direction of the vibrating bracket when being thrown up by the vibrating bracket, and the screening surface cannot slide along with the vibration or the running of materials in other directions except the vibrating direction of the vibrating bracket. The flexible connecting piece can adopt a steel wire rope or an elastic rope and the like.
And a blanking channel for blanking of the screen is arranged on the vibrating bracket.
By adopting the technical scheme, the screen blanking can fall from the blanking channel of the vibrating bracket.
The vibration source and the vibration bracket are arranged on a screen box of the vibrating screen, and the screen box of the vibrating screen is connected with a foundation through a vibration reduction device to form a single-body vibrating screen;
or the vibrating bracket is connected with the screen box of the vibrating screen through the main vibrating spring, the excitation source is arranged on the screen box of the vibrating screen, the screen box of the vibrating screen is connected with the foundation through the vibration damper, and the limiter is connected between the vibrating bracket and the screen box of the vibrating screen to form the double-mass vibrating screen.
By adopting the technical scheme, the limit device can ensure that the vibrating bracket moves in the vibration direction of the excitation source.
Preferably, the screening surface is a flexible screening surface.
By adopting the technical scheme, the screen surface adopts the flexible screen surface, when the vibration bracket impacts the screen surface, the screen holes of the screen surface are easy to deform, the material critical particles clamped on the screen holes are dislocated along with the deformation of the screen holes, and the material critical particles clamped on the screen holes are easier to remove, so that the blockage of the screen holes is effectively prevented.
Preferably, the rapping surface of the rapping bracket, which is in contact with the screen surface, and/or the lower surface of the screen surface, which is in contact with the rapping bracket, is provided with rapping protrusions.
By adopting the technical scheme, the vibrating and beating brackets are arranged at different positions at different moments, and especially when the flexible screen surface is adopted, the screen surface can generate local deformation, so that the material critical particles clamped in the screen holes can be removed more conveniently.
It can be seen that the present invention has outstanding substantial features and significant advances over the prior art, as well as the benefits of its implementation.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a vibrating screen with a suspended screen surface (single-body vibrating screen) in operation;
FIG. 2 is a schematic view of the structure of the A-direction in FIG. 1;
FIG. 3 is an enlarged view of the portion B of FIG. 1;
FIG. 4 is a schematic diagram of a vibrating screen with a suspended screen surface (a double-mass vibrating screen) in operation;
FIG. 5 is a schematic view of the structure of the A-direction in FIG. 4;
fig. 6 is a rotation enlarged view of the portion B in fig. 4.
In the figure: the device comprises a screen surface 1, a vibrating bracket 2, a blanking channel 2.1, a 3-vibration source, a 4-vibration damper, a 5-foundation, a 6-flexible connecting piece, a screen box of a 7-vibrating screen, an 8-main vibrating spring and a 9-limiter.
Detailed Description
In order to make the objects, features and advantages of the present invention more comprehensible, embodiments accompanied with specific embodiments and figures are described in detail below, wherein the embodiments are described only in part but not in all embodiments. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the invention are intended to be within the scope of the patent protection.
Example 1
A screening method of a vibrating screen with a floatable screen surface during operation comprises the steps of placing a screen surface 1 on a vibrating bracket 2, vibrating the vibrating bracket 2 under the action of an excitation source 3, wherein the movement of a screening section of the screen surface 1 in the vibrating direction of the vibrating bracket 2 is not limited; the vibrating bracket 2 continuously shakes the screen surface 1, the exciting intensity of the exciting source 3 is regulated, when the exciting intensity of the exciting source 3 reaches a certain value, the vibrating bracket 2 can continuously throw the screen surface 1, a suspension space can be continuously formed between the vibrating bracket 2 and the screen surface 1, materials on the screen surface are continuously thrown by the screen surface, and the materials on the screen surface are continuously screened by the screen surface.
The screening section of the screen surface 1 is not limited in the vibration direction of the vibrating bracket 2, when the vibrating bracket 2 throws the screen surface, different instantaneous acceleration exists between the vibrating bracket 2 and the screen surface 1, the vibrating bracket 2 can continuously impact and vibrate the screen surface 1, and the material critical particles of the screen holes clamped on the screen surface can be thrown out, so that the blocking of the material critical particles on the screen holes is effectively avoided; in the normal screening process, a suspension space can be continuously formed between the vibrating bracket 2 and the screen surface 1, and meanwhile, materials roll and are layered on the screen surface 1; the screening effect and the screening efficiency of the screen surface 1 are effectively enhanced; in addition, when sieving the great material of viscidity, shake and shake the carrier 2 constantly to sieve face 1, can effectually avoid viscidity material to glue on the sieve face. The screening section of the screening surface 1 refers in this patent application to the part of the screening surface 1 that is used for screening material. In general, under the action of the excitation source 3, the instantaneous acceleration generated by the rapping carriage 2 is a, a being greater than g, g being the gravitational acceleration.
The screening section of the screen surface 1 is not fixedly connected with the rapping bracket 2;
one end of the screen surface 1 is hinged with a foundation 5 or a vibrating bracket 2 or a screen box 7 of the vibrating screen;
or the screen surface 1 is connected with the foundation 5 or the rapping bracket 2 or the screen box 7 of the vibrating screen through a flexible connecting piece 6;
or a baffle plate for preventing the screen surface 1 from sliding down is arranged on the screen box 7 of the vibrating screen.
In the technical scheme, the screen surface 1 is connected with a screen box 7 of the vibrating screen through a flexible connecting piece 6.
In the technical scheme, a blanking channel 2.1 for screening off the blanking is arranged on the vibrating bracket 2. The rapping bracket 2 is arranged in a grid-like structure.
Preferably, the screening surface 1 is a flexible screening surface.
Preferably, the rapping protrusions are provided on the rapping surface of said rapping bracket 2 in contact with the screen surface 1 and/or on the lower surface of the screen surface 1 in contact with the rapping bracket 2.
Example 2
As shown in fig. 1-3, a vibrating screen with a floatable screen surface in operation comprises a screen surface 1, a vibrating bracket 2 and a vibration excitation source 3, wherein the vibrating bracket 2 vibrates under the action of the vibration excitation source 3, the screen surface 1 is placed on the vibrating bracket 2, and the movement of a screening section of the screen surface 1 in the vibrating direction of the vibrating bracket 2 is not limited.
The screening section of the screen surface 1 is not limited in the vibration direction of the vibrating bracket 2, when the vibrating bracket 2 throws the screen surface, different instantaneous acceleration exists between the vibrating bracket 2 and the screen surface 1, the vibrating bracket 2 can continuously impact and vibrate the screen surface 1, and the material critical particles of the screen holes clamped on the screen surface can be thrown out, so that the blocking of the material critical particles on the screen holes is effectively avoided; in the normal screening process, a suspension space can be continuously formed between the vibrating bracket 2 and the screen surface 1, and meanwhile, materials roll and are layered on the screen surface 1; the screening effect and the screening efficiency of the screen surface 1 are effectively enhanced; in addition, when sieving the great material of viscidity, shake and shake the carrier 2 constantly to sieve face 1, can effectually avoid viscidity material to glue on the sieve face. The screening section of the screening surface 1 refers in this patent application to the part of the screening surface 1 that is used for screening material. In general, under the action of the excitation source 3, the instantaneous acceleration generated by the rapping carriage 2 is a, a being greater than g, g being the gravitational acceleration.
The screening section of the screen surface 1 is not fixedly connected with the rapping bracket 2;
one end of the screen surface 1 is hinged with a foundation 5 or a vibrating bracket 2 or a screen box 7 of the vibrating screen;
or the screen surface 1 is connected with the foundation 5 or the rapping bracket 2 or the screen box 7 of the vibrating screen through a flexible connecting piece 6;
or a baffle plate for preventing the screen surface 1 from sliding down is arranged on the screen box 7 of the vibrating screen.
In the technical scheme, the screen surface 1 is connected with a screen box 7 of the vibrating screen through a flexible connecting piece 6.
In the technical scheme, a blanking channel 2.1 for screening off the blanking is arranged on the vibrating bracket 2. The rapping bracket is arranged into a grid hole-shaped structure.
In the technical scheme, the excitation source 3 and the vibrating bracket 2 are arranged on a screen box 7 of the vibrating screen, and the screen box 7 of the vibrating screen is connected with the foundation 5 through the vibration damper 4 to form a single-mass vibrating screen.
Preferably, the screening surface 1 is a flexible screening surface.
Preferably, the rapping protrusions are provided on the rapping surface of said rapping bracket 2 in contact with the screen surface 1 and/or on the lower surface of the screen surface 1 in contact with the rapping bracket 2.
Example 3
As shown in fig. 4 to 6, the difference from embodiment 2 is that: in this technical scheme, shake and beat bracket 2 and be connected with the sieve case 7 of shale shaker through main vibrating spring 8, excitation source 3 sets up on the sieve case 7 of shale shaker, the sieve case 7 of shale shaker is connected with basis 5 through vibration damper 4, shake and beat and be connected with stopper 9 between bracket 2 and the sieve case 7 of shale shaker, form two plastid shale shakers.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are mutually referred.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. A kind of screen surface can suspend the vibrating screen while working, characterized by: the vibrating and beating device comprises a screen surface, a vibrating and beating bracket and a vibration excitation source, wherein the vibrating and beating bracket vibrates under the action of the vibration excitation source, the screen surface is placed on the vibrating and beating bracket, and the movement of a screening section of the screen surface in the vibrating direction of the vibrating and beating bracket is not limited;
the screening section of the screening surface is not fixedly connected with the vibrating bracket;
one end of the screen surface is hinged with a foundation or a vibrating bracket or a screen box or a vibration exciter of the vibrating screen;
or the screen surface is connected with a foundation or a vibrating bracket or a screen box or a vibration exciter of the vibrating screen through a flexible connecting piece;
or a baffle plate for preventing the screen surface from sliding off is arranged on the screen box of the vibrating screen;
the screen surface is a flexible screen surface; a rapping protrusion is arranged on the rapping surface of the rapping bracket contacted with the screen surface and/or the lower surface of the screen surface contacted with the rapping bracket;
the screening method of the vibrating screen with the suspended screen surface during working comprises the following steps: placing a screen surface on a rapping bracket, wherein the rapping bracket vibrates under the action of a vibration source, and the movement of a screening section of the screen surface in the vibration direction of the rapping bracket is not limited; the vibrating bracket can continuously throw up the screen surface by continuously vibrating the screen surface and adjusting the excitation intensity of the excitation source, a suspension space can be continuously formed between the vibrating bracket and the screen surface, and materials on the screen surface are continuously thrown up and screened by the screen surface.
2. The in-service screen surface floatable vibrating screen as claimed in claim 1, characterized by: and a blanking channel for blanking of the screen is arranged on the vibrating bracket.
3. The in-service screen surface floatable vibrating screen as claimed in claim 1, characterized by: the vibration source and the vibration bracket are arranged on a screen box of the vibrating screen, and the screen box of the vibrating screen is connected with a foundation through a vibration reduction device to form a single-body vibrating screen;
or the vibrating bracket is connected with the screen box of the vibrating screen through the main vibrating spring, the excitation source is arranged on the screen box of the vibrating screen, the screen box of the vibrating screen is connected with the foundation through the vibration damper, and the limiter is connected between the vibrating bracket and the screen box of the vibrating screen to form the double-mass vibrating screen.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710318047.6A CN106944339B (en) | 2017-05-08 | 2017-05-08 | Vibrating screen with floatable screen surface during working and screening method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710318047.6A CN106944339B (en) | 2017-05-08 | 2017-05-08 | Vibrating screen with floatable screen surface during working and screening method |
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| CN106944339A CN106944339A (en) | 2017-07-14 |
| CN106944339B true CN106944339B (en) | 2023-06-02 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107442401B (en) * | 2017-09-01 | 2023-05-26 | 济南大学 | Double-mass anti-resonance vibrating screen |
| CN108015001B (en) * | 2018-01-06 | 2024-01-23 | 济南中燃科技发展有限公司 | Vibrating screen with suspended screen surface |
| CN108296163A (en) * | 2018-02-01 | 2018-07-20 | 江苏亿亿和华筛分设备有限公司 | A kind of compound sieve plate |
| CN109622364A (en) * | 2019-01-06 | 2019-04-16 | 江苏亿亿和华筛分设备有限公司 | A kind of sieve plate preventing material sticks and the vibrating screen using the sieve plate |
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| CA1246012A (en) * | 1983-05-16 | 1988-12-06 | Cecil T. Humphrey | Vertically spaced eccentric weight agitators in a multi-deck classifier |
| CN101402087A (en) * | 2008-11-24 | 2009-04-08 | 济南中燃科技发展有限公司 | Counter play sifting method and screen employing drop energy of screening material |
| CN101632988A (en) * | 2009-05-27 | 2010-01-27 | 北京嘉博文生物科技有限公司 | Vibration type grid sorting machine |
| AU2014202488A1 (en) * | 2013-05-14 | 2014-12-04 | Colin Morrow | Separation systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ES1040148Y (en) * | 1998-05-08 | 1999-07-01 | Atmos Espanola S A | CAMS SCREEN |
| CN203678668U (en) * | 2013-11-15 | 2014-07-02 | 长安大学 | Aggregate screening device for laboratory |
| CN105772395B (en) * | 2016-05-11 | 2019-06-28 | 济南中燃科技发展有限公司 | A kind of double mass vertical vibration antiresonance sieve |
| CN207013260U (en) * | 2017-05-08 | 2018-02-16 | 济南中燃科技发展有限公司 | Compass screen surface can floated vibratory sieve during one kind work |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1246012A (en) * | 1983-05-16 | 1988-12-06 | Cecil T. Humphrey | Vertically spaced eccentric weight agitators in a multi-deck classifier |
| CN101402087A (en) * | 2008-11-24 | 2009-04-08 | 济南中燃科技发展有限公司 | Counter play sifting method and screen employing drop energy of screening material |
| CN101632988A (en) * | 2009-05-27 | 2010-01-27 | 北京嘉博文生物科技有限公司 | Vibration type grid sorting machine |
| AU2014202488A1 (en) * | 2013-05-14 | 2014-12-04 | Colin Morrow | Separation systems |
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