CN112536220A - Space body distribution excitation track-changing vibrating screen - Google Patents
Space body distribution excitation track-changing vibrating screen Download PDFInfo
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- CN112536220A CN112536220A CN202011458512.4A CN202011458512A CN112536220A CN 112536220 A CN112536220 A CN 112536220A CN 202011458512 A CN202011458512 A CN 202011458512A CN 112536220 A CN112536220 A CN 112536220A
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- 230000005284 excitation Effects 0.000 title claims abstract description 56
- 238000002955 isolation Methods 0.000 claims abstract description 22
- 230000000712 assembly Effects 0.000 claims description 25
- 238000000429 assembly Methods 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000012216 screening Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract 2
- 239000003245 coal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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Classifications
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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
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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
-
- 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
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- Combined Means For Separation Of Solids (AREA)
Abstract
本发明公开了一种空间体分布激振变轨迹振动筛，包括筛箱和设置在筛箱上的多组激振组件；筛箱安装在隔振组件上，包括水平铺设的筛面和前后对称设置在筛面两侧的一对筛箱侧板；多组激振组件左右分布在一对筛箱侧板之间，每组激振组件包括多个连接板、连接管和激振器；多个连接板前后间隔设置，并通过多个同一圆周布置的连接管穿过连接，每个连接板的前后两侧并列设有一对偏心式激振器，相邻连接板之间靠近的激振器通过万向联轴器串联连接。本空间体分布激振变轨迹振动筛，采用空间结构的激振方式，将激振力均匀分散到激振组件内部，不仅使得结构紧凑、稳定，而且降低传统集中型激振方式易造成的局部应力集中现象，适合不同筛分工况。
The invention discloses a space body distributed exciting vibration variable trajectory vibrating screen, comprising a screen box and a plurality of groups of vibration excitation components arranged on the screen box; the screen box is installed on the vibration isolation component, and includes a horizontally laid screen surface and a front-to-rear symmetrical A pair of screen box side plates arranged on both sides of the screen surface; multiple groups of excitation components are distributed between the pair of screen box side plates on the left and right, and each group of excitation components includes a plurality of connecting plates, connecting pipes and vibration exciters; A pair of eccentric vibration exciters are arranged side by side on the front and rear sides of each connecting plate, and the vibration exciters that are close to each other between adjacent connecting plates Connected in series via universal joints. The spatial distribution excitation variable trajectory vibrating screen adopts the excitation method of spatial structure to evenly disperse the excitation force into the excitation components, which not only makes the structure compact and stable, but also reduces the local vibration easily caused by the traditional centralized excitation method. Stress concentration phenomenon, suitable for different screening conditions.
Description
Technical Field
The invention relates to the field of screening, in particular to a space body distribution excitation track-changing vibrating screen.
Background
The vibrating screen is a vibrating screening mechanical device which utilizes the relative motion of bulk materials and a screen surface to enable partial particles to penetrate through screen holes and divide materials such as sand, gravel, broken stone and the like into different grades according to the particle size, and the vibrating screen is widely applied to coal preparation plants as key equipment for coal screening, such as classification, separation, powder removal, medium removal, dehydration and the like of raw coal. The quality of the performance of the vibrating screen is directly related to the production efficiency. With the development trend of large-scale and intensive coal preparation plants, higher requirements are put forward on the screening area and the reliability of the vibrating screen.
Because the structural feature of shale shaker, current shale shaker realizes improving screening efficiency through increase screening area often, but screening area increases the back, and its curb plate horizontal span increases, needs the multiunit to connect the crossbeam to increase its intensity on the one hand, and on the other hand is for being suitable for different screening operating modes, and its excitation mode often adjusts inconveniently, and expansibility is poor, can bring local stress concentration problem moreover.
Disclosure of Invention
The invention provides a space body distribution excitation track-changing vibrating screen, which adopts an excitation mode of a space structure to uniformly disperse excitation force into an excitation component, so that the structure is compact and stable, the phenomenon of local stress concentration easily caused by the traditional centralized excitation mode is reduced, the size and distribution of the whole excitation force can be flexibly adjusted, and the space body distribution excitation track-changing vibrating screen is suitable for different screening working conditions.
In order to achieve the purpose, the space body distribution vibration excitation track-variable vibrating screen comprises a screen box and a plurality of groups of vibration excitation components arranged on the screen box;
the screen box is arranged on the vibration isolation assembly and comprises a screen surface which is horizontally laid and a pair of screen box side plates which are symmetrically arranged at the front and the back of the two sides of the screen surface;
the multiple groups of excitation assemblies are distributed between the pair of screen box side plates in the left-right direction, and each group of excitation assemblies comprises multiple connecting plates, connecting pipes and an excitation exciter;
the connecting plates are arranged at intervals front and back, the connecting pipes arranged through the same circumferences penetrate through the connecting plates, a pair of eccentric vibration exciters are arranged on the front side and the back side of each connecting plate in parallel, and the vibration exciters close to the adjacent connecting plates are connected in series through universal couplings.
Furthermore, the vibration isolation assemblies are in multiple groups, and the multiple groups of vibration isolation assemblies are correspondingly arranged right below the multiple groups of vibration excitation assemblies;
the screen box is installed on the vibration isolation assembly through a plurality of supporting seats arranged on the side plate of the screen box.
Furthermore, the mass diameter products of a pair of eccentric vibration exciters arranged in parallel on each connecting plate in each group of vibration exciting assemblies are different.
Further, the number of connecting plates or connecting pipes in adjacent excitation assemblies is different.
Furthermore, the spatial position of the total exciting force action point generated by the multiple groups of exciting assemblies is not coincident with the mass center of the sieve box.
Furthermore, the connecting pipes are uniformly arranged on the circumference with the vibration exciter as the center of a circle.
Furthermore, the vibration isolation assembly is a vibration isolation spring, the connecting plate is a circular thin plate, and the screen surface is made of a polyurethane flexible material.
Compared with the prior art, this space body distribution excitation becomes orbit shale shaker has following advantage:
(1) because each connecting plate in the excitation assembly is provided with a pair of vibration exciters in parallel, the adjacent vibration exciters are connected in series through a universal coupling, the excitation force is uniformly dispersed into the excitation assembly by adopting an excitation mode of a space structure and stretches across a pair of side plates of the screen box, the phenomenon of local stress concentration easily caused by the traditional centralized excitation mode is reduced, and the vibration exciters are combined in series, so that the size and the distribution of the whole excitation force can be flexibly adjusted, and the screen box is suitable for different screening working conditions;
(2) according to the invention, the connecting plates are connected through the connecting pipes distributed on the periphery, so that a single round pipe which is large in overall rigidity and smaller in mass than the same contact area is used as a connecting beam for connecting a pair of side plates of the screen box and transmits exciting force to the side plates of the screen box, the number of connecting cross beams of the side plates of the screen box is reduced, and the overall structure is compact and stable;
(3) the eccentric vibration exciters on each connecting plate can have different mass-diameter products, so that correspondingly generated total exciting forces are different, the adjustment of the change of the size of the whole exciting force can be realized according to different screening working conditions, the distribution change of the exciting force on space can be realized, the requirement of the unbalance of the exciting force under the condition of variable-amplitude screening can be met, in addition, the number of the connecting plates or connecting pipes in adjacent exciting assemblies can be different, the adjustment of the number and the distribution of the vibration exciters can be realized, part of the vibration exciters can work in a targeted manner, and the working energy consumption of the vibrating screen can be reduced.
Drawings
FIG. 1 is an overall schematic view of the present invention;
FIG. 2 is an overall front view of the present invention;
in the figure: 11. sieve case curb plate, 12, supporting seat, 2, sifting surface, 31, connecting plate, 32, connecting pipe, 33, universal joint, 34, vibration exciter, 4, isolation spring.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 and 2, the vibration exciting track-variable vibrating screen with spatial volume distribution comprises a screen box and a plurality of groups of vibration exciting assemblies arranged on the screen box; the screen box is arranged on the vibration isolation assembly and comprises a screen surface 2 which is horizontally laid and a pair of screen box side plates 11 which are symmetrically arranged at the front and the back of two sides of the screen surface 2;
a plurality of groups of vibration excitation assemblies are distributed between the pair of screen box side plates 11 from left to right, and each group of vibration excitation assemblies comprises a plurality of connecting plates 31, connecting pipes 32 and vibration exciters 34;
the connecting plates 31 are arranged at intervals in the front and back and are connected in a penetrating manner through a plurality of connecting pipes 32 arranged on the same circumference, a pair of eccentric vibration exciters 34 are arranged on the front side and the back side of each connecting plate 31 in parallel, and the vibration exciters 34 close to each other between the adjacent connecting plates 31 are connected in series through universal couplings 33;
furthermore, the vibration isolation components are in a plurality of groups, the vibration isolation components are correspondingly arranged under the vibration excitation components,
the screen box is arranged on the vibration isolation assembly through a plurality of supporting seats 12 arranged on a side plate 11 of the screen box;
because the vibration exciting assembly is positioned right above the vibration isolating assembly, the action line of the exciting force of the vibration exciting assembly is superposed with the action line of the spring force, the longitudinal bending moment to the side plate is eliminated, and the integral stress distribution is improved.
Furthermore, the mass diameter products of a pair of eccentric vibration exciters 34 arranged in parallel on each connecting plate 31 in each group of excitation assemblies are different;
further, the number of the connecting plates 31 or the connecting pipes 32 in adjacent excitation assemblies is different;
furthermore, the spatial position of the total exciting force action point generated by the multiple groups of exciting assemblies is not coincident with the mass center of the sieve box;
further, a plurality of connecting pipes 32 are uniformly arranged on the circumference of which the center is the vibration exciter 34; preferably, the number of connecting tubes 32 is six;
further, the vibration isolation component is a vibration isolation spring 4, the connecting plate 31 is a circular thin plate, and the screen surface 2 is made of a polyurethane flexible material;
this space body distributes excitation and becomes track shale shaker during use, can start external drive motor, be connected through drive disk assembly and excitation subassembly well one end, eccentric formula vibration exciter 34 action on the connecting plate 31 promptly to produce the rotatory inertial force of space vector, inertial force passes through on connecting plate 31 and connecting pipe 32 transmit a pair of sieve case curb plate 11 and sifter 2, act on vibration isolation spring 4 through supporting seat 12, make the whole reciprocal vibration that produces of sieve case, and then drive sifter 2 vibration.
Because the excitation assembly comprises a plurality of connecting plates 31 arranged in front and back, each connecting plate 31 is provided with a pair of vibration exciters 34 in parallel, the adjacent vibration exciters 34 are connected in series through a universal coupling 33, the excitation mode adopting a space structure uniformly disperses the excitation force into the excitation assembly and stretches across between a pair of screen box side plates 11, the phenomenon of local stress concentration easily caused by the traditional centralized excitation mode is reduced, and the vibration exciters 34 are combined in series, so that the size and the distribution of the whole excitation force can be flexibly adjusted, and the excitation assembly is suitable for different screening working conditions;
because the connecting plates 31 are connected through the connecting pipes 32 distributed on the periphery, a single round pipe which has high integral rigidity and is smaller than the same contact area in mass not only serves as a connecting beam for connecting a pair of screen box side plates 11, but also transfers exciting force for the screen box side plates 11, and the number of connecting beams of the screen box side plates 11 is reduced;
because the mass-diameter products of the eccentric vibration exciters 34 on each connecting plate 31 can be different, the correspondingly generated total exciting forces are different, so that the adjustment of the change of the size of the whole exciting force can be realized according to different screening working conditions, the distribution change of the exciting force in space can be realized, the requirement of the variable-amplitude screening condition on the unbalance of the exciting force can be met, in addition, the number of the connecting plates 31 or the connecting pipes 32 in the adjacent exciting assemblies can be different, the adjustment of the number and the distribution of the vibration exciters 34 can be realized, part of the vibration exciters 34 can work in a targeted manner, and the working energy consumption of the vibrating screen can be reduced.
In addition, the spatial position of the action point of the total exciting force is not coincident with the mass center of the screen box, so that the additional torsion effect brought to the mass center of the screen body by the large span can be fully utilized, the amplitude variation of the material flow direction is realized, and the screening effect is improved.
Claims (7)
1. A vibration exciting track-variable vibrating screen with a spatial body distribution comprises a screen box and a plurality of groups of vibration exciting assemblies arranged on the screen box;
the screen box is arranged on the vibration isolation component and comprises a screen surface (2) which is horizontally laid and a pair of screen box side plates (11) which are symmetrically arranged at the front and the back of the two sides of the screen surface (2),
a plurality of groups of excitation assemblies are distributed between a pair of screen box side plates (11) in a left-right mode, and each group of excitation assemblies comprises a plurality of connecting plates (31), connecting pipes (32) and vibration exciters (34);
the connecting plates (31) are arranged at intervals in the front and back and are connected in a penetrating manner through a plurality of connecting pipes (32) arranged on the same circumference, a pair of eccentric vibration exciters (34) is arranged on the front side and the back side of each connecting plate (31) in parallel, and the vibration exciters (34) close to each other between the adjacent connecting plates (31) are connected in series through universal couplings (33).
2. The spatial volume distribution excitation variable-track vibrating screen according to claim 1, wherein the vibration isolation assemblies are a plurality of groups, and the plurality of groups of vibration isolation assemblies are correspondingly arranged right below the plurality of groups of vibration isolation assemblies;
the screen box is arranged on the vibration isolation assembly through a plurality of supporting seats (12) arranged on a side plate (11) of the screen box.
3. The vibrating screen with variable tracks by spatial distribution excitation as claimed in claim 2, characterized in that the mass-diameter products of the pair of eccentric exciters (34) arranged in parallel on each connecting plate (31) in each group of excitation assemblies are different.
4. A space volume distributed excitation variable track vibrating screen as claimed in claim 2, wherein the number of connecting plates (31) or connecting pipes (32) in adjacent excitation assemblies is different.
5. The vibrating screen with variable vibration tracks and spatial distribution as claimed in claim 3 or 4, wherein the spatial position of the acting point of the total vibration force generated by the multiple groups of vibration exciting assemblies is not coincident with the mass center of the screen box.
6. The vibrating screen of variable track with spatial distribution excitation as claimed in claim 5, wherein the plurality of connecting pipes (32) are uniformly arranged around the circumference of the vibration exciter (34).
7. The spatial volume distribution excitation track-changing vibrating screen according to claim 6, wherein the vibration isolation assembly is a vibration isolation spring (4), the connecting plate (31) is a circular thin plate, and the screen surface (2) is made of a polyurethane flexible material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011458512.4A CN112536220A (en) | 2020-12-11 | 2020-12-11 | Space body distribution excitation track-changing vibrating screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011458512.4A CN112536220A (en) | 2020-12-11 | 2020-12-11 | Space body distribution excitation track-changing vibrating screen |
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| Publication Number | Publication Date |
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| CN112536220A true CN112536220A (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011458512.4A Pending CN112536220A (en) | 2020-12-11 | 2020-12-11 | Space body distribution excitation track-changing vibrating screen |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101011695A (en) * | 2007-01-15 | 2007-08-08 | 中国矿业大学 | Y-shaped static-indeterminant combination reinforced beam oversize vibration screen |
| CN201431961Y (en) * | 2009-05-20 | 2010-03-31 | 中国矿业大学 | A vibrating screen with variable ellipse trajectory and equal thickness |
| CN103240222A (en) * | 2013-04-28 | 2013-08-14 | 中国矿业大学 | Synchronous hyperstatic net beam excitation large-scale vibrating screen |
| CN107470136A (en) * | 2017-09-27 | 2017-12-15 | 中国矿业大学 | One kind becomes amplitude equal thick screen |
-
2020
- 2020-12-11 CN CN202011458512.4A patent/CN112536220A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101011695A (en) * | 2007-01-15 | 2007-08-08 | 中国矿业大学 | Y-shaped static-indeterminant combination reinforced beam oversize vibration screen |
| CN201431961Y (en) * | 2009-05-20 | 2010-03-31 | 中国矿业大学 | A vibrating screen with variable ellipse trajectory and equal thickness |
| CN103240222A (en) * | 2013-04-28 | 2013-08-14 | 中国矿业大学 | Synchronous hyperstatic net beam excitation large-scale vibrating screen |
| CN107470136A (en) * | 2017-09-27 | 2017-12-15 | 中国矿业大学 | One kind becomes amplitude equal thick screen |
Non-Patent Citations (1)
| Title |
|---|
| 王振乾: "超静定网梁体振动筛动态结构响应研究", 《超静定网梁体特大型振动筛动力学及筛分特征研究》 * |
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Application publication date: 20210323 |