CN110639808B - Adjustable eccentric block capable of realizing double-track motion of vibrating screen - Google Patents
Adjustable eccentric block capable of realizing double-track motion of vibrating screen Download PDFInfo
- Publication number
- CN110639808B CN110639808B CN201910981774.XA CN201910981774A CN110639808B CN 110639808 B CN110639808 B CN 110639808B CN 201910981774 A CN201910981774 A CN 201910981774A CN 110639808 B CN110639808 B CN 110639808B
- Authority
- CN
- China
- Prior art keywords
- eccentric block
- vibrating screen
- spring
- shaft
- driven
- 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.)
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Links
- 230000033001 locomotion Effects 0.000 title claims abstract description 41
- 229930182556 Polyacetal Natural products 0.000 claims description 4
- 229920006324 polyoxymethylene Polymers 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims 1
- 239000002002 slurry Substances 0.000 abstract description 8
- 230000005284 excitation Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 238000005553 drilling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
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
- B07B1/36—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro in more than one direction
-
- 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
Landscapes
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention provides an adjusting eccentric block capable of realizing double-track motion of a vibrating screen, which comprises the following components: the driving eccentric block is fixed on the motor rotating shaft, a sliding groove is formed in the driving eccentric block and comprises a radial sliding groove and an arc sliding groove, and the radial sliding groove is communicated with the arc sliding groove; the driven eccentric block is provided with a guide cylindrical pin, one end of the guide cylindrical pin is inserted into the chute, the spring shaft is sleeved with a spring, one end of the spring props against the driven eccentric block, and the other end of the spring props against the bottom of the spring shaft; and one end of the limiting baffle is fixedly connected with the driving eccentric block, and the other end of the limiting baffle is positioned right above the driven eccentric block. The problems that the existing exciting motor is fixed in exciting force, single in function and incapable of adapting to slurry under various working conditions are solved.
Description
Technical Field
The invention relates to a vibrating screen excitation motor, in particular to an adjusting eccentric block capable of realizing double-track motion of a vibrating screen.
Background
In the petroleum drilling process, a drilling vibrating screen is required to process the slurry so that the slurry can be recycled, and an exciting motor is the most important component for realizing the process; the exciting motor is characterized in that two ends of a rotor shaft are respectively provided with a group of eccentric blocks, and the shaft and the eccentric blocks rotate at a high speed to generate centrifugal force to obtain exciting force. The existing exciting motors are provided with fixed sliding blocks, most of the exciting motors have single motion tracks, exciting forces of the exciting motors are fixed and cannot be adjusted, and the exciting motors are single in function and cannot adapt to mud under various working conditions.
Disclosure of Invention
The invention aims to overcome the technical defects, and provides the exciting force adjusting structure of the vibrating screen exciting motor, which has the advantages of simple structure, capability of quickly adjusting the exciting force, realization of different motion tracks to adapt to slurry under various working conditions, full combination of the advantages of large processing capacity of a linear vibrating screen, capability of preventing screen blockage and screen paste of an elliptical vibrating screen and the like.
In order to achieve the technical purpose, the technical scheme of the invention provides an adjusting eccentric block capable of realizing double-track motion of a vibrating screen, which comprises the following components:
the driving eccentric block is fixed on the motor rotating shaft and is provided with a chute, the chute comprises a radial chute and an arc chute, and the radial chute is communicated with the arc chute;
the driven eccentric block is positioned at the outer side of the driving eccentric block, a guide cylindrical pin is arranged on the driven eccentric block, one end of the guide cylindrical pin penetrates through the driven eccentric block and is inserted into the sliding groove, an open slot is formed in the end face of the driven eccentric block, and the width of the bottom of the open slot is larger than that of the top of the open slot;
the spring shaft is sleeved on the motor rotating shaft through a bearing, a spring is sleeved on the spring shaft, the other end of the spring shaft is inserted into the opening groove, a baffle is arranged at the bottom of the other end of the spring shaft, one end of the spring props against the driven eccentric block, and the other end of the spring props against the baffle;
and one end of the limiting baffle is fixed on the end face of the driving eccentric block, and the other end of the limiting baffle is positioned right above the driven eccentric block.
Further, a magnet is arranged at a position on the driven eccentric block corresponding to the limit baffle.
Further, the guide cylindrical pin is in threaded connection with the driven eccentric block.
Further, the driving eccentric block is fixed on the motor rotating shaft through a flat key.
Further, one end of the guide cylindrical pin is provided with a buffer layer.
Further, the buffer layer is polyacetal plated at one end of the guide cylindrical pin.
Further, the bearing is a sliding bearing.
Further, a shaft diameter tightening nut is sleeved on the motor rotating shaft, the shaft diameter tightening nut is located on the outer side of the sliding bearing, and the shaft diameter tightening nut is fixed on the motor rotating shaft through a screw.
Compared with the prior art, the invention has the beneficial effects that: the adjusting eccentric block capable of realizing double-track motion of the vibrating screen can generate two different exciting forces when the motor rotates positively and reversely, so that the vibrating screen can realize two different motion tracks of variable linear track motion and translational elliptic track motion, thereby being suitable for the needs of slurry under various working conditions, and fully combining the advantages of large treatment capacity of the linear vibrating screen, capability of preventing screen blockage, screening paste and the like of the elliptic vibrating screen; meanwhile, the driven eccentric block is a sliding eccentric block, and the structure also obviously reduces the resonance amplitude of the vibrating screen during starting and stopping or reverse rotation.
Drawings
FIG. 1 is a schematic diagram of a structure of an adjusting eccentric block for realizing double-track motion of a vibrating screen;
FIG. 2 is a cross-sectional view of A-A of FIG. 1;
FIG. 3 is a schematic view of the structure of the driven eccentric mass;
FIG. 4 is a schematic view of the structure of the driving eccentric mass;
reference numerals illustrate:
1-magnet, 2-limit baffle, 3-hexagon bolt, 4-hexagon socket head cap bolt, 5-spring shaft, 6-hexagon socket head cap screw, 7-fastening nut, 8-driving eccentric block, 9-motor rotating shaft, 10-driven eccentric block, 11-spring, 12-nut, 13-guiding cylindrical pin, 14-bearing, 15-flat key, 16-circular arc chute, 17-radial chute, 18-open slot and 19-baffle.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 to 4, in order to solve the problems that fixed sliding blocks are set in the existing excitation motor, most of the fixed sliding blocks are single-motion tracks, the excitation force is fixed, the excitation force is not adjustable, the function is single, and the slurry under various working conditions cannot be adapted, the embodiment of the invention provides an adjusting eccentric block capable of realizing double-track motion of a vibrating screen, which comprises the following components: the driving eccentric block 8 is fixed on the motor rotating shaft 9, the driving eccentric block 8 is provided with a chute, the chute comprises a radial chute 17 and an arc chute 16, and the radial chute 17 is communicated with the arc chute 16; the driven eccentric block 10 is positioned at the outer side of the driving eccentric block 8, a guide cylindrical pin 13 is arranged on the driven eccentric block 10, one end of the guide cylindrical pin 13 penetrates through the driven eccentric block 10 and is inserted into the sliding groove, an open slot 18 is formed in the end face of the driven eccentric block 10, and the width of the bottom of the open slot 18 is larger than that of the top of the open slot 18; the spring shaft 5, one end of the spring shaft 5 is sleeved on the motor rotating shaft 9 through a bearing, the spring shaft 5 is sleeved with a spring 11, the other end of the spring shaft 5 is inserted into the open groove 18, the spring 11 is positioned in the open groove 18, the outer diameter of the spring 11 is larger than the width of the top of the open groove 18, a baffle 19 is arranged at the bottom of the other end of the spring shaft 5, one end of the spring 11 props against the driven eccentric block 10 at the top of the open groove 18, and the other end of the spring 11 props against the baffle 19; and one end of the limit baffle 2 is fixed on the end face of the driving eccentric block 8, and the other end of the limit baffle 2 is positioned right above the driven eccentric block 10.
The invention can realize two motion modes of the vibrating screen with two excitation motors, one is a linear motion track changing mode and the other is a translational elliptic motion track mode.
The linear motion trajectory changing mode refers to: when the vibrating screen is operated on site, the two exciting motors rotate anticlockwise to generate exciting forces with the same size and in the symmetrical direction by taking the perpendicular bisector of the connecting line of the two rotating shafts as the symmetrical axis, and the resultant force of the generated exciting forces is not larger than the mass center of the moving part of the vibrating screen, so that the vibrating screen realizes a linear motion track; the mode is that when the driving eccentric block 8 rotates anticlockwise, the driven eccentric block 10 is driven through the limiting baffle 2 and the groove end of the circular arc chute 16, so that the driving eccentric block 8 and the driven eccentric block 10 are integrated to move in the same direction along the same movement track, and meanwhile, the two exciting motors generate exciting force, the force is not larger than the mass center of the movement part of the vibrating screen, so that the mode of changing the linear movement track is achieved.
The translational elliptical motion track mode refers to: when the vibration screen is operated on site, two excitation motors can generate two different excitation forces when rotating clockwise, so that the force center of resultant force of the generated excitation forces is overlapped with the mass center of the moving part of the vibration screen, and the translational elliptic motion track is realized. When the motor rotating shaft 9 rotates clockwise, the driving eccentric block 8 is used as a driving block to rotate clockwise firstly, the driven eccentric block 10 is not driven by the motor rotating shaft 9 because the motor rotating shaft 9 is connected through the bearing 14, meanwhile, the guide cylindrical pin 13 on the driven eccentric block 10 slides relatively in the circular arc chute 16 without being restrained, when the guide cylindrical pin 13 slides to the tail end of the circular arc chute 16 and enters the radial chute 17, the driving eccentric block 8 and the driven eccentric block 10 synchronously rotate at the same angular frequency, the eccentric force is gradually increased, the driven eccentric block 10 moves radially and centrifugally to the circumference of a certain radius along the radial chute 17 because the eccentric force is larger than the elastic force of the spring 11, at the moment, the driving eccentric block 8 and the driven eccentric block 10 do circular motions of different radiuses respectively, and the generated exciting force is combined with the exciting force generated by the other structurally fixed exciter to generate the exciting force under the state, so that an elliptical track motion mode is realized.
Therefore, the eccentric block can realize two different motion tracks of the vibrating screen, namely linear motion and translational elliptical motion, so as to adapt to the slurry requirements of various working conditions, and the advantages of large treatment capacity of the linear vibrating screen, screen blockage prevention, screen paste prevention of the elliptical vibrating screen and the like are fully combined.
As shown in fig. 1, a magnet 1 is disposed on the driven eccentric block 10 at a position corresponding to the limit stop 2. After the motor stops rotating clockwise, in order to fix and position the driven eccentric block 10, a magnet 1 is arranged at a position on the driven eccentric block 10 corresponding to the limit baffle 2, and the driven eccentric block 10 is fixed and positioned by the attraction force of the magnet 1 to the limit baffle 2, so that the two are mutually collided and the noise generated by the two is reduced.
As shown in fig. 2, the guide cylindrical pin 13 is screwed with the driven eccentric block 10.
Wherein the driving eccentric block 8 is fixed on the motor rotating shaft 9 through a flat key 15.
Further, one end of the guide cylindrical pin 13 is provided with a buffer layer (not shown in the figure). In order to reduce the collision between the guide cylindrical pin 13 and the sliding groove, thereby reducing the generated noise, a buffer layer is further arranged at one end of the guide cylindrical pin 13, and the buffer layer is arranged to prevent the guide cylindrical pin 13 from being deformed due to the collision.
Preferably, the buffer layer is polyacetal plated on one end of the guide cylindrical pin 13. In order to improve the reliability of the buffer layer, prevent the buffer layer from falling off easily in the use process, and reduce the cost, the buffer layer is made of polyacetal plated at one end of the guide cylindrical pin 13.
Further, the bearing 14 is a sliding bearing. The specific limitation of the bearing to a sliding bearing may reduce the cost, but is not limited to a sliding bearing, and may be a rolling bearing.
As shown in fig. 4, one end of the radial chute 17 communicates with one end of the circular arc chute 16.
As shown in fig. 1, the motor rotating shaft 9 is further sleeved with a shaft diameter fastening nut 7, the shaft diameter fastening nut 7 is located on the outer side of the sliding bearing, and the shaft diameter fastening nut 7 is fixed on the motor rotating shaft 9 through a screw. Preferably, the shaft diameter tightening nut 7 is fixed on the motor shaft through a hexagon socket cap screw 6. The shaft diameter tightening nut 7 is used for limiting the axial direction of the eccentric block and preventing the eccentric block from moving along the axial direction of the motor rotating shaft 9.
According to the adjusting eccentric block capable of realizing double-track motion of the vibrating screen, the driven eccentric block can slide in the circular arc chute 16 and the radial chute 17 through the guide cylindrical pin 13 to realize structural change, when two exciting motors are operated on site, when the two exciting motors are reversed along the direction, the driving eccentric block 8 and the driven eccentric block 10 are integrated to move in the same direction, and the resultant force of exciting forces generated by the two exciting motors is not larger than the mass center of a moving part of the vibrating screen, so that the vibrating screen can realize a linear motion track; when two exciting motors rotate positively, the driven eccentric blocks can slide to the radial sliding grooves along the arc sliding grooves to do centrifugal motion and centripetal motion along with the expansion and contraction of the springs, so that when the rotating speed is fixed, the driving eccentric blocks 8 and the driven eccentric blocks 10 do circular motion with different radiuses respectively, the generated exciting force is synthesized with the exciting force generated by the exciting device fixed by the other structure to generate exciting force in the state, and a translational elliptic track motion mode is realized, so that when the motors rotate positively and reversely, two different exciting forces can be generated, two different motion tracks can be realized by the vibrating screen, so that the requirements of slurry under various working conditions are met, the advantages of large processing capacity of the linear vibrating screen, screen blocking prevention, screen paste prevention and the like of the elliptic vibrating screen are fully combined, and meanwhile, the driven eccentric blocks are sliding eccentric blocks, and the structure also obviously reduces the resonance amplitude of the vibrating screen during starting and stopping or rotating reversely.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any other corresponding changes and modifications made in accordance with the technical idea of the present invention shall be included in the scope of the claims of the present invention.
Claims (6)
1. An adjustable eccentric block capable of realizing double-track motion of a vibrating screen, comprising:
the driving eccentric block is fixed on the motor rotating shaft and is provided with a chute, the chute comprises a radial chute and an arc chute, and the radial chute is communicated with the arc chute;
the driven eccentric block is positioned at the outer side of the driving eccentric block, a guide cylindrical pin is arranged on the driven eccentric block, one end of the guide cylindrical pin penetrates through the driven eccentric block and is inserted into the sliding groove, an open slot is formed in the end face of the driven eccentric block, and the width of the bottom of the open slot is larger than that of the top of the open slot;
the spring shaft is sleeved on the motor rotating shaft through a bearing, a spring is sleeved on the spring shaft, the other end of the spring shaft is inserted into the opening groove, a baffle is arranged at the bottom of the other end of the spring shaft, one end of the spring props against the driven eccentric block, and the other end of the spring props against the baffle;
one end of the limit baffle is fixed on the end face of the driving eccentric block, and the other end of the limit baffle is positioned right above the driven eccentric block;
a magnet is arranged at a position corresponding to the limit baffle on the driven eccentric block;
the guide cylindrical pin is in threaded connection with the driven eccentric block.
2. The adjustable eccentric mass for realizing double track motion of a vibrating screen according to claim 1, wherein the driving eccentric mass is fixed on the motor shaft by a flat key.
3. The adjustable eccentric block capable of realizing double-track motion of a vibrating screen according to claim 1, wherein one end of the guide cylindrical pin is provided with a buffer layer.
4. The adjustable eccentric block capable of realizing double-track motion of a vibrating screen according to claim 3, wherein the buffer layer is polyacetal plated at one end of the guide cylindrical pin.
5. The adjustable eccentric mass for dual track movement of a vibrating screen of claim 1, wherein said bearing is a sliding bearing.
6. The adjustable eccentric block capable of realizing double-track motion of a vibrating screen according to claim 5, wherein a shaft diameter tightening nut is sleeved on the motor rotating shaft, the shaft diameter tightening nut is positioned outside the sliding bearing, and the shaft diameter tightening nut is fixed on the motor rotating shaft through a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910981774.XA CN110639808B (en) | 2019-10-18 | 2019-10-18 | Adjustable eccentric block capable of realizing double-track motion of vibrating screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910981774.XA CN110639808B (en) | 2019-10-18 | 2019-10-18 | Adjustable eccentric block capable of realizing double-track motion of vibrating screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110639808A CN110639808A (en) | 2020-01-03 |
| CN110639808B true CN110639808B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910981774.XA Active CN110639808B (en) | 2019-10-18 | 2019-10-18 | Adjustable eccentric block capable of realizing double-track motion of vibrating screen |
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| CN (1) | CN110639808B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108554802B (en) * | 2018-05-22 | 2023-08-01 | 西南石油大学 | Tension spring coupled homodromous rotary multi-excitation motor device |
| CN114700245B (en) * | 2022-04-18 | 2023-05-09 | 东北大学秦皇岛分校 | Vibration device with excitation force self-adjusting function and parameter determining method thereof |
| CN115318626A (en) * | 2022-08-22 | 2022-11-11 | 内江师范学院 | Grit processing apparatus for construction engineering |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201862561U (en) * | 2010-11-26 | 2011-06-15 | 中国石油集团渤海石油装备制造有限公司 | Double-track vibrating screen |
| CN201966734U (en) * | 2010-10-15 | 2011-09-07 | 卧龙电气集团股份有限公司 | Sector eccentric block adjustment mechanism for vibration motor |
| CN203695369U (en) * | 2014-01-10 | 2014-07-09 | 赵广洋 | Sliding type eccentric block |
| CN105618374A (en) * | 2016-02-04 | 2016-06-01 | 濮阳市中原锐实达石油设备有限公司 | Exciting force adjusting structure of exciting motor of vibrating screen |
| CN209476646U (en) * | 2018-12-25 | 2019-10-11 | 中国石油集团渤海石油装备制造有限公司 | Adjustable eccentric away from eccentric block component, vibration excitor and vibrating screen |
| CN210906922U (en) * | 2019-10-18 | 2020-07-03 | 长江大学 | Adjusting eccentric block capable of realizing double-track motion of vibrating screen |
-
2019
- 2019-10-18 CN CN201910981774.XA patent/CN110639808B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201966734U (en) * | 2010-10-15 | 2011-09-07 | 卧龙电气集团股份有限公司 | Sector eccentric block adjustment mechanism for vibration motor |
| CN201862561U (en) * | 2010-11-26 | 2011-06-15 | 中国石油集团渤海石油装备制造有限公司 | Double-track vibrating screen |
| CN203695369U (en) * | 2014-01-10 | 2014-07-09 | 赵广洋 | Sliding type eccentric block |
| CN105618374A (en) * | 2016-02-04 | 2016-06-01 | 濮阳市中原锐实达石油设备有限公司 | Exciting force adjusting structure of exciting motor of vibrating screen |
| CN209476646U (en) * | 2018-12-25 | 2019-10-11 | 中国石油集团渤海石油装备制造有限公司 | Adjustable eccentric away from eccentric block component, vibration excitor and vibrating screen |
| CN210906922U (en) * | 2019-10-18 | 2020-07-03 | 长江大学 | Adjusting eccentric block capable of realizing double-track motion of vibrating screen |
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| Publication number | Publication date |
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| CN110639808A (en) | 2020-01-03 |
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