CN108554772B - Ore sand screening method based on gravity induction - Google Patents
Ore sand screening method based on gravity induction Download PDFInfo
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- CN108554772B CN108554772B CN201810009525.XA CN201810009525A CN108554772B CN 108554772 B CN108554772 B CN 108554772B CN 201810009525 A CN201810009525 A CN 201810009525A CN 108554772 B CN108554772 B CN 108554772B
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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
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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
-
- 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
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Abstract
The invention discloses a gravity induction-based ore sand screening method, which comprises the following steps: in the material waiting idling stage, the motor is started, at the moment, the material is not conveyed to the trigger mechanism, the state switching mechanism is in an initial state, and the screening device is in a non-vibration state; in the screening stage, materials are conveyed to the trigger mechanism, the trigger mechanism is triggered to drive the state switching mechanism to switch from an initial state to a working state, and the vibration mechanism drives the screening device to vibrate to screen the materials; in the resetting stage, the trigger mechanism is recovered to the initial state, the state switching mechanism is switched from the working state to the initial state, the screening device stops vibrating, and the switching between the no-load idle state and the bearing vibrating state is realized by additionally arranging the state switching mechanism, so that the resources in the production process are greatly saved, and meanwhile, the trigger mechanism is installed in a matching manner, so that the automatic control system has higher automation performance, the labor intensity of operators is reduced, and the production efficiency is improved.
Description
Technical Field
The invention relates to a screening method, in particular to an intermittent vibration screening method.
Background
The vibrating screen is widely used in actual production and life, because the intermittent phenomenon of material supply often appears in the actual production process, if the equipment is not closed, the equipment is always in an idle-load vibrating state, so that not only are resources wasted, but also the service life of the equipment is shortened while the production cost is increased, but if the equipment is frequently opened or closed, not only is an additional operator needed to be added, but also the equipment can be damaged by frequent opening/closing.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide an intermittent vibration screening method.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.
A gravity-triggered indirect-vibration ore sand screen comprises a rack, a screening device and a power supply device, wherein the screening device is arranged on the rack and used for screening articles, the power supply device is used for providing driving force for the screening device, and a vibration mechanism is arranged between the screening device and the power supply device and used for receiving the driving force of the power supply device, transmitting the driving force to the screening device and driving the screening device to vibrate;
the invention also adds a state switching mechanism which can realize the switching between no-load idling and bearing vibration of the screening device, and the invention is also provided with a trigger mechanism which can be matched with the state switching mechanism;
the screening device is movably arranged between the top frame and the bearing plate, and the triggering mechanism is arranged on the bearing plate and is arranged along with the screening device;
the vibration mechanism including setting up the support shell on the base, the level is worn to be equipped with and can be around self axis pivoted drive pivot in the support shell, one side parallel arrangement of drive pivot wears to locate the support shell and can be around self axis pivoted vibrations main shaft, power supply device connects in the drive end of drive pivot through first drive mechanism, the output of drive pivot passes through second drive mechanism and connects in the drive end of vibrations main shaft, the output of vibrations main shaft connects in the sieving mechanism.
As a further improvement of the present solution.
The power supply device is a motor, the motor is coaxially fixed at one end side of the driving rotating shaft and is connected with the driving end of the driving rotating shaft through a coupler, the output end of the driving rotating shaft is connected with a first gear in a sliding mode, a third gear matched and meshed with the first gear is fixedly sleeved at the driving end of the vibration main shaft, a vibration guide wheel matched with the screening device is installed at the output end of the vibration main shaft, and the state switching mechanism can drive the first gear and the third gear to be switched between a meshing state and a disengaging state;
a limiting mechanism for guiding the gear I to move along the axis direction of the driving rotating shaft is arranged between the gear I and the driving rotating shaft, and the gear I can still receive the rotating force from the driving rotating shaft while axially displacing along the driving rotating shaft through the limitation of the limiting mechanism; the limiting mechanism is an external spline arranged at the position of the driving rotating shaft and an internal spline arranged at the position of the gear and matched with the external spline on the driving rotating shaft.
As a further improvement of the present solution.
The spring used for drawing the first gear to move away from the power supply device along the axis of the driving rotating shaft is sleeved outside the driving rotating shaft, the reset spring used for pushing the first gear to move towards the second gear is sleeved between the first gear and the power supply device and located outside the driving rotating shaft, and elastic resistance provided by the reset spring can limit the first gear to move towards the power supply device and is convenient for resetting of the mechanism.
As a further improvement of the present solution.
The state switching mechanism comprises a switching main shaft which is horizontally arranged in the supporting shell in a penetrating mode, is parallel to the driving rotating shaft and is located in the same horizontal plane with the driving rotating shaft at intervals, a gear four is fixedly sleeved at the driving end of the switching main shaft, a switching sleeve is coaxially sleeved at the output end of the switching main shaft, and a shifting fork which can receive the driving of the switching sleeve and push the gear one to move along the axis of the driving rotating shaft is arranged between the switching sleeve and the gear one.
As a further improvement of the present solution.
The state switching mechanism further comprises a switching component and a second gear, wherein the switching component is arranged among the switching main shaft, the driving main shaft and the shifting fork at intervals, the second gear is coaxially and fixedly sleeved at the suspension end part of the driving rotating shaft, the switching component comprises a touch push block connected with the trigger mechanism, and a fifth gear which is rotatably arranged on the touch push block and can be respectively matched and meshed with the second gear and the fourth gear, the switching component can receive the trigger of the trigger mechanism and can move up and down in the interval between the driving rotating shaft and the switching main shaft, so that the fifth gear and the second gear and the fourth gear are switched between a meshing state and a disengaging state, when the state switching mechanism is in an initial state, the second gear is in meshing transmission with the fifth gear, the fifth gear is in meshing transmission with the fourth gear, and when the state switching mechanism is.
As a further improvement of the present solution.
The switching sleeve be circular column barrel, switch and seted up on the telescopic outer disc and switch the guide slot, foretell shift fork one end constitutes the sliding guide cooperation with switching the guide slot, the switching guide slot include with the guiding groove of switching sleeve coaxial arrangement, be the drive groove of angle switch-on with the guiding groove, the guiding groove close on the gear four settings, the minimum contained angle scope is between guiding groove and the drive groove: 120-150 degrees, the switching guide grooves are arrayed along the circumference of the switching sleeve, two adjacent guide grooves are arranged at intervals, transition inclined planes are arranged at the bottoms of the guide grooves, and the transition inclined planes can guide the shifting fork to be smoothly transited from one guide groove to the other adjacent guide groove in a one-way mode.
As a further improvement of the present solution.
The shifting fork comprises a sliding rod, a bayonet and a supporting arm, wherein the sliding rod is matched with the switching guide groove in a sliding guide mode, the bayonet is used for pushing the gear to move along the axis of the driving rotating shaft, and the supporting arm is arranged between the sliding rod and the bayonet and is fixedly connected with the sliding rod and the bayonet respectively.
As a further improvement of the present solution.
The device comprises a trigger mechanism, a trigger push block, a driving bevel and a guide vertical plane, wherein the trigger push block is a rectangular block, one end of the trigger push block is connected with the trigger mechanism, the other end of the trigger push block is provided with a fifth gear capable of rotating around the axis of the trigger push block, the end face, close to a shifting fork, of the trigger push block is provided with the driving bevel and the guide vertical plane positioned above the driving bevel, the horizontal distance between the driving bevel and a support arm is gradually increased from top to bottom along the direction perpendicular to the support arm, and when the state switching mechanism is in an initial state.
As a further improvement of the present solution.
The trigger mechanism is arranged at the feeding end of the screening device and comprises a press-fit touch plate arranged above the bearing plate in parallel, a material guide groove for materials to pass through is formed above the press-fit touch plate, an elastic piece for drawing the press-fit touch plate to move away from the bearing plate along the vertical direction is arranged on the press-fit touch plate, the trigger mechanism further comprises a trigger rod arranged between the press-fit touch plate and the touch push block, one end of the trigger rod penetrates through a yielding hole formed in the bearing plate and is fixedly connected with the press-fit touch plate, and the other end of the trigger rod penetrates through a through hole formed in the top of the supporting shell and is fixedly connected with the touch push block.
As a further improvement of the present solution.
The screening device comprises a screen, a swing arm is arranged between the screen and an upper frame, one end of the swing arm is hinged with the upper frame, the other end of the swing arm is hinged with the screen, the hinged shaft core wires are parallel to each other and are parallel to the axial direction of a driving rotating shaft, a discharge opening is arranged at the position, close to the discharge end of the screen, on a bearing plate, a guide chute for guiding materials to be smoothly discharged is arranged at the discharge opening, the screening device also comprises a vibration frame arranged between a vibration guide wheel and the screen, one end of the vibration frame is hinged at the bottom of the screen, the core wire of the hinged shaft is parallel to the axial direction of a driving main shaft, the other end of the vibration frame is in matched transmission with the vibration guide wheel, the vibration frame is a strip-shaped plate body, a driving guide groove extending along the length direction of the vibration frame is arranged at the end part matched with the vibration guide wheel, the vibration guide wheel is a, the end face of the circular guide wheel close to the vibration frame is eccentrically provided with a driving rod matched with the driving guide groove in a sliding mode, and the driving rod can slide in the driving guide groove along the guiding direction of the driving guide groove in the process that the circular guide wheel rotates around the axis of the driving rod, so that the vibration frame can reciprocate in the direction perpendicular to the axis of the driving guide groove.
The ore sand screening method based on gravity induction comprises the following steps:
a material waiting idling stage;
the power supply device is started, at the moment, the material is not conveyed to the trigger mechanism, the state switching mechanism is in an initial state, at the moment, the second gear is in meshed transmission with the fifth gear, the fifth gear is in meshed transmission with the fourth gear, the power supply device drives the second gear to rotate through the driving rotating shaft, the fifth gear is in meshed transmission with the second gear, the fourth gear is in meshed transmission with the fifth gear, the fourth gear drives the switching sleeve to synchronously rotate through the switching main shaft, at the moment, the sliding rod slides in the guide groove and moves around the circumference of the switching sleeve in the adjacent guide groove through the transition inclined surface;
(II) screening;
the material is transported to the trigger mechanism, the trigger mechanism is triggered and drives the state switching mechanism to switch from the initial state to the working state, in the process, the trigger push block moves downwards under the drive of the trigger mechanism, the gear five is gradually disengaged from the gear two and the gear four, the drive inclined plane on the trigger push block is contacted with the support arm and pushes the shifting fork to overcome the elastic force of the reset spring to move along the central axis of the drive rotating shaft towards the direction close to the power supply device, the bayonet pushes the gear one to move synchronously, at the moment, the slide bar enters the drive groove from the guide groove and slides in the drive groove, when the trigger push block moves to lead the plumb plane to be contacted with the support arm, the trigger mechanism is completely triggered, at the moment, the gear five is completely disengaged from the gear two and the gear four, the gear one is in meshing transmission with the gear three, the power supply device drives the gear one to rotate through the drive, the third gear drives the vibration guide wheel to rotate through the vibration main shaft and finally drives the screening device to vibrate;
(III) a resetting stage;
when the material supply is intermittent, the trigger force disappears at the moment, the trigger mechanism returns to the initial state, the state switching mechanism is switched from the working state to the initial state, in the process, the trigger push block moves upwards under the traction of the trigger mechanism, the gear five is gradually returned to be meshed with the gear two and the gear four, the contact surface of the trigger push block and the supporting arm is transited from the guide vertical surface to the drive inclined surface, the switching sleeve rotates, the slide rod enters the guide groove from the drive groove along with the rotation of the switching sleeve, the supporting arm moves along the central axis of the drive rotating shaft in the direction far away from the power supply device, meanwhile, the return spring pushes the gear to synchronously move, the gear one is gradually disengaged with the gear three, when the trigger push block is disengaged from the supporting arm, the gear five is completely returned to be meshed with the gear two and the gear four, the gear one is completely disengaged with the gear three, and at, the transition inclined planes move around the circumference of the switching sleeve in the adjacent guide grooves repeatedly.
Compared with the prior art, the invention has the advantages that the switching between the no-load idle running state and the bearing vibration state is realized by additionally arranging the state switching mechanism, the resources in the production process are greatly saved, and meanwhile, the invention has higher automation performance by matching and installing the trigger mechanism, the labor intensity of operators is reduced, and the production efficiency is improved.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the overall structure of the present invention.
Fig. 3 is a schematic diagram of the power supply device, the state switching mechanism and the vibration mechanism according to the present invention.
Fig. 4 is a schematic diagram of the state switching mechanism of the present invention in an initial state in cooperation with the vibration mechanism.
Fig. 5 is a schematic view of the state switching mechanism of the present invention in cooperation with the vibration mechanism when the state switching mechanism is in an operating state.
Fig. 6 is a schematic view of the matching between the trigger pushing block and the shifting fork when the state switching mechanism of the present invention is in the working state.
Fig. 7 is a schematic diagram of the cooperation among the fifth gear, the second gear and the fourth gear when the state switching mechanism of the present invention is in the operating state.
Fig. 8 is a schematic view illustrating the engagement between the shift sleeve and the shift fork when the state switching mechanism of the present invention is in the initial state.
Fig. 9 is a schematic view of the engagement between the switching sleeve and the shift fork when the state switching mechanism of the present invention is in the operating state.
FIG. 10 is a schematic view of the engagement between the shift fork, the first gear and the driving shaft according to the present invention.
Fig. 11 is a schematic structural view of a touch push block of the present invention.
FIG. 12 is a schematic view of the cooperation between the vibration guide wheel and the vibration frame according to the present invention.
Fig. 13 is a schematic view of the engagement between the trigger mechanism and the trigger pushing block of the present invention.
FIG. 14 is a schematic view of the sieving device, the vibration frame, and the vibration guide wheel according to the present invention.
Figure 15 is a schematic view of a screen according to the present invention.
Labeled as:
100. a frame; 110. a base; 120. a support; 130. a top frame; 140. a support plate;
200. a screening device; 210. screening; 211. a raised block; 220. swinging arms; 230. a vibration frame;
300. a power supply device;
400. a vibration mechanism; 410. driving the rotating shaft; 411. a first gear; 412. a second gear; 413. a return spring; 420. vibrating the main shaft; 421. a third gear; 422. vibrating the guide wheel;
500. a trigger mechanism; 510. pressing the touch plate; 520. a trigger lever;
600. a state switching mechanism; 610. switching the main shaft; 611. a fourth gear; 612. a switching sleeve; 612a, a driving groove; 621b, a guide groove; 620. a switching component; 621. touching the push block; 621a, a guide vertical plane; 621b, a driving ramp; 621c, a connecting frame; 622. a fifth gear; 630. a shifting fork; 631. a slide bar; 632. a guide hole; 633. a support arm; 634. and (4) a bayonet.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 7, the gravity-triggered indirect vibration ore sand screen includes a frame 100, a screening device 200 disposed on the frame 100 for screening articles, and a power supply device 300 for providing a driving force for the screening device 200, wherein a vibration mechanism 400 for receiving the driving force of the power supply device 300, transmitting the driving force to the screening device 200, and driving the screening device 200 to vibrate is further disposed between the screening device 200 and the power supply device 300.
Because the intermittent phenomenon of material supply often occurs in the actual production process, at this time, if the equipment is not closed, the equipment is always in an idle load vibration state, not only is resources wasted and the production cost increased, but also the service life of the equipment is reduced, but if the equipment is frequently opened/closed, not only an additional operator is required to be added, but also the equipment is damaged by frequent opening/closing, in order to solve the problems, the invention is also additionally provided with a state switching mechanism 600 capable of realizing the switching between idle load idling and load vibration of the screening device 200, and simultaneously, in order to improve the automation degree of the invention, the invention automatically completes the switching of the two working modes when no one operates, the invention is also provided with a trigger mechanism 500 capable of being matched with the state switching mechanism 600, and when in work, the power supply device 300 is opened, at this time, the material is not transported to the screening device 200, the triggering mechanism 500 is not triggered, the state switching mechanism 600 is in an initial state, the vibration mechanism 400 and the screening device 200 are in a non-transmission state, the power supply device 300 drives the vibration mechanism 400 to idle, when the material is transported to the screening device 200, the triggering mechanism 500 is triggered, the state switching mechanism 600 is switched from the initial state to a working state, the vibration mechanism 400 and the screening device 200 are in a transmission state, the power supply device 300 drives the screening device 200 to vibrate through the vibration mechanism 400, screening of the material is realized, when the material supply is interrupted, the triggering force disappears, the triggering mechanism 500 returns to the initial state, the state switching mechanism 600 is switched from the working state to the initial state, the vibration mechanism 400 and the screening device 200 are in a non-transmission state, the power supply device 300 drives the vibration mechanism 400 to idle, this is repeated alternately.
As shown in fig. 2, the frame 100 includes a base 110 disposed on the ground for mounting the power supply device 300, the vibration mechanism 400, and the state switching mechanism 600, a bracket 120 extending vertically and upwardly is fixedly mounted on the base 110, a top frame 130 is mounted on the top of the bracket 120, a supporting plate 140 located between the top frame 130 and the base 110 is mounted on the bracket 120, the screening device 200 is movably mounted between the top frame 130 and the supporting plate 140, and the trigger mechanism 500 is mounted on the supporting plate 140 and is disposed along with the screening device 200.
As shown in fig. 3-7, the vibration mechanism 400 includes a supporting housing disposed on the base 110, a driving shaft 410 horizontally penetrates through the supporting housing and can rotate around its own axis, a vibration spindle 420 penetrating through the supporting housing and can rotate around its own axis is disposed in parallel on one side of the driving shaft 410, the power supply device 300 is connected to a driving end of the driving shaft 410 through a first transmission mechanism, an output end of the driving shaft 410 is connected to a driving end of the vibration spindle 420 through a second transmission mechanism, and an output end of the vibration spindle 420 is connected to the screening device 200.
More specifically, the power supply device 300 is a motor, the motor is coaxially fixed at one end side of the driving rotating shaft 410 and is connected with the driving end of the driving rotating shaft 410 through a coupler, the output end of the driving rotating shaft 410 is slidably connected with a first gear 411, a third gear 421 matched and meshed with the first gear 411 is fixedly sleeved at the driving end of the vibration main shaft 420, a vibration guide wheel 422 matched with the screening device 200 is installed at the output end of the vibration main shaft 420, and the state switching mechanism 600 can drive the first gear 411 and the third gear 421 to be switched between a meshing state and a disengaging state, so that the screening device 200 is switched between a no-load idling state and a bearing vibration state.
A limiting mechanism for guiding the first gear 411 to move along the axial direction of the driving rotating shaft 410 is arranged between the first gear 411 and the driving rotating shaft 410, and the first gear 411 can still receive the rotating force from the driving rotating shaft 410 while axially displacing along the driving rotating shaft 410 through the limitation of the limiting mechanism; preferably, the limiting mechanism is an external spline disposed at the driving rotating shaft 410, and an internal spline disposed at the first gear 411 and matched with the external spline on the driving rotating shaft 410.
A spring for drawing the gear one 411 to move away from the power supply device 300 along the axis of the driving rotating shaft 410 is sleeved outside the driving rotating shaft 410, preferably, a return spring 413 for pushing the gear one 411 to move towards the gear two 412 is sleeved outside the driving rotating shaft 410 and between the gear one 411 and the power supply device 300, and elastic resistance provided by the return spring 413 can limit the gear one 411 to move towards the power supply device 300 and facilitate the return of the mechanism.
As shown in fig. 3, 4, and 7, the state switching mechanism 600 includes a switching main shaft 610 horizontally penetrating through the supporting housing, parallel to the driving rotating shaft 410, and spaced apart from the driving rotating shaft 410 in the same horizontal plane, a gear four 611 fixedly secured to a driving end of the switching main shaft 610, a switching sleeve 612 coaxially disposed on an output end of the switching main shaft 610, and a shifting fork 630 disposed between the switching sleeve 612 and the gear one 411 and capable of receiving the driving of the switching sleeve 612 and pushing the gear one 411 to move along the axis of the driving rotating shaft 410.
The state switching mechanism 600 further includes a switching component 620 disposed at an interval between the switching main shaft 610, the driving main shaft 410 and the shifting fork 630, and a second gear 412 coaxially fixed at a suspension end of the driving rotary shaft 410, wherein the switching component 620 includes a trigger push block 621 connected to the trigger mechanism 500, and a fifth gear 622 rotatably disposed on the trigger push block 621 and capable of being respectively engaged with the second gear 412 and the fourth gear 611 in a matching manner, and the switching component 620 can receive the trigger of the trigger mechanism 500 and realize the up-and-down movement (pathological sentence) in the interval between the driving rotary shaft 410 and the switching main shaft 610, thereby realizing the switching between the engagement state/disengagement state of the fifth gear 622, the second gear 412 and the fourth gear 611.
When the state switching mechanism 600 is in the initial state, the second gear 412 is in meshing transmission with the fifth gear 622, the fifth gear 622 is in meshing transmission with the fourth gear 611, and when the state switching mechanism 600 is in the working state, the first gear 411 is in meshing transmission with the third gear 421.
As shown in fig. 8-10, the switching sleeve 612 is a cylindrical cylinder, a switching guide groove is formed on an outer circumferential surface of the switching sleeve 612, one end of the shift fork 630 is slidably and slidably engaged with the switching guide groove, and the switching guide groove includes a guide groove 612b coaxially disposed with the switching sleeve and a driving groove 612a communicated with the guide groove 612b at an angle.
More specifically, the guiding groove 612b is disposed adjacent to the gear four 611, and a minimum included angle range between the guiding groove 612b and the driving groove 612a is as follows: 120 to 150, preferably 140.
The switching guide grooves are arrayed along the circumference of the switching sleeve 612, two adjacent guide grooves 612b are arranged at intervals, transition inclined planes are arranged at the grooves of the guide grooves 612b, and the transition inclined planes can guide the shifting fork 630 to smoothly transit from one guide groove 612b to the other adjacent guide groove 612b in a one-way mode.
The shifting fork 630 includes a sliding rod 631 slidably guided and engaged with the switching guide groove, a bayonet 634 for pushing the first gear 411 to move along the axis of the driving shaft 410, and a supporting arm 633 disposed between the sliding rod 631 and the bayonet 634 and fixedly connected to the sliding rod 631 and the bayonet 634, respectively.
As shown in fig. 7, 11, and 13, the trigger pushing block 621 is a rectangular block, one end of the trigger pushing block 621 is connected to the triggering mechanism 500, and the other end of the trigger pushing block 621 is installed with a gear five 622 capable of rotating around its own axis, an end surface of the trigger pushing block 621 close to the shifting fork 630 is provided with a driving inclined surface 621b and a guiding vertical surface 621a located above the driving inclined surface 621b, a horizontal distance between the driving inclined surface 621b and the supporting arm 633 is gradually increased from top to bottom along a direction perpendicular to the supporting arm 633, and when the state switching mechanism 600 is in the initial state, the driving inclined surface 621b is located above the supporting arm 633.
When the material is not transported to the trigger mechanism 500, the state switching mechanism is in an initial state, at this time, the gear two 412 is in meshing transmission with the gear five 622, the gear five 622 is in meshing transmission with the gear four 611, at this time, the power supply device 300 drives the gear two 412 to rotate through the driving rotating shaft 410, the gear five 622 is in meshing transmission with the gear two 412, the gear four 611 is in meshing transmission with the gear five 622, the gear four 611 drives the switching sleeve 612 to synchronously rotate through the switching main shaft 610, at this time, the sliding rod 631 slides in the guiding groove 612b and moves around the circumference of the switching sleeve 612 in the adjacent guiding groove 612b through the transition inclined surface, when the material is transported to the trigger mechanism 500, the trigger mechanism 500 is triggered and the driving state 600 is switched from the initial state to the working state, in this process, the trigger push block 621 is triggered to move downward under the driving of the trigger mechanism 500, the gear five 622 and, The gear four 611 is gradually disengaged, the driving inclined surface 621b on the trigger pushing block 621 contacts with the supporting arm 633, and pushes the shifting fork 630 to move along the central axis of the driving rotating shaft 410 in a direction approaching the power supply device 300 against the elastic force of the return spring 413, the bayonet 634 pushes the gear one 411 to move synchronously, at this time, the sliding rod 631 enters the driving groove 612a from the guiding groove 612b and slides in the driving groove 612a, when the trigger pushing block 621 moves to guide the vertical surface 621a to contact with the supporting arm 633, the trigger mechanism 500 is fully triggered, at this time, the gear five 622 is fully disengaged with the gear two 412 and the gear four 611, the gear one 411 is engaged with the gear three 421 for transmission, the power supply device 300 drives the gear one 411 to rotate through the driving rotating shaft 410, the gear three 421 is engaged with the gear one 411 for rotation, the gear three 421 drives the vibration guide wheel 422 to rotate through the vibration main shaft 420 and finally, when the material supply is intermittent, the trigger force disappears at this time, the trigger mechanism 500 returns to the initial state, the state switching mechanism 600 switches from the working state to the initial state, in the process, the trigger push block 621 moves upward under the traction of the trigger mechanism 500, the gear five 622 gradually returns to be engaged with the gear two 412 and the gear four 611, the contact surface between the trigger push block 621 and the support arm 633 transitions from the guide vertical surface 621a to the drive inclined surface 621b, the switching sleeve 612 rotates, the slide rod 631 enters the guide groove 612b from the drive groove 612a along with the rotation of the switching sleeve 612, the support arm 633 moves along the central axis of the drive rotating shaft 410 in the direction away from the power supply device 300, the return spring 413 pushes the gear one 411 to synchronously move, the gear one 411 gradually disengages from the gear three 421, when the trigger push block 621 disengages from the support arm, the gear five 622 completely returns to be engaged with the gear two 412 and the gear four 611, when the first gear 411 is completely disengaged from the third gear 421, the sliding rod 631 enters the guiding groove 612b and moves along the circular motion of the switching sleeve 612 in the adjacent guiding groove 612b through the transition slope, and the process is repeated.
As shown in fig. 1 and 13, the triggering mechanism 500 is disposed at the feeding end of the screening apparatus 200, the triggering mechanism 500 includes a pressing contact plate 510 disposed above the supporting plate 140 in parallel, a material guiding groove for passing the material is disposed above the pressing contact plate 510, an elastic member is disposed on the pressing contact plate 510 for pulling the pressing contact plate 510 to move away from the supporting plate 140 along the vertical direction, preferably, a plurality of springs for pushing the pressing contact plate 510 to move away from the supporting plate 140 along the vertical direction are disposed between the pressing contact plate 510 and the supporting plate 140, one end of each spring is fixedly connected to the pressing contact plate 510, and the other end of each spring is fixedly connected to the supporting plate 140.
In order to improve the stability of the press-fit touch plate 510 during the movement and avoid the left-right shaking, one end of the spring is sleeved outside the guide post mounted on the press-fit touch plate 510, the other end of the spring is sleeved outside the guide rod mounted on the support plate 140, and when the guide post contacts with the guide rod, the trigger mechanism 500 is completely triggered.
The triggering mechanism 500 further comprises a triggering rod 520 arranged between the pressing and touching plate 510 and the triggering and pushing block 621, one end of the triggering rod 520 passes through a relief hole arranged on the supporting plate 140 and is fixedly connected with the pressing and touching plate 510, the other end of the triggering rod 520 passes through a through hole arranged on the top of the supporting shell and is fixedly connected with the triggering and pushing block 621, when the material contacts the pressing and touching plate 510, the gravity of the material overcomes the elastic force of the spring to drive the pressing and touching plate 510 to move along the vertical direction towards the direction close to the supporting plate 140, meanwhile, the triggering rod 520 moves synchronously and pushes the triggering and pushing block 621 to move synchronously, the switching of the state switching mechanism 600 from the initial state to the working state is completed, when the material is separated from the pressing and touching plate 510, the elastic force of the spring pushes the pressing and touching plate 510 to move along the vertical direction away from the supporting plate 140, meanwhile, the triggering rod 520 moves synchronously and pulls the triggering and pushing block, the switching of the state switching mechanism 600 from the operating state to the initial state is completed.
As shown in fig. 12 and 14, the screening apparatus 200 includes a screen 210, a swing arm 220 is disposed between the screen 210 and the top frame 130, one end of the swing arm 220 is hinged to the top frame 130, and the other end of the swing arm is hinged to the screen 210, the hinge axes are parallel to each other and parallel to the axis direction of the driving shaft 410, so that the screen 210 can be suspended below the top frame through the swing arm 220 under the driving of the vibration guide wheel 422 and swing around the hinge axis to realize the screening effect, a discharge opening is disposed at a position on the support plate 140 near the discharge end of the screen 210, and a chute for guiding the material to be smoothly discharged is disposed at the discharge opening.
More specifically, in order to improve the stability of the screen 210 in the swinging process and the bearing capacity of the screen 210, the swing arms 220 are provided with two groups and are symmetrical about the center of the screen 210, wherein two swing arms 220 are arranged in each group of swing arms 220, and the two swing arms 220 are uniformly arranged at the corners of the screen 210 along the conveying direction of the material.
The screening device 200 further comprises a vibration frame 230 arranged between the vibration guide wheel 422 and the screen 210, one end of the vibration frame 230 is hinged to the bottom of the screen 210, a core wire of the hinged shaft is parallel to the axis of the driving spindle 410, the other end of the vibration frame 230 is in matched transmission with the vibration guide wheel 422, the vibration frame 230 is a strip-shaped plate body, a driving guide groove extending along the length direction of the vibration frame 230 is formed in the end part of the vibration frame 230 matched with the vibration guide wheel 422, the vibration guide wheel 422 is a circular guide wheel fixedly sleeved on the vibration spindle 420 and concentrically arranged with the vibration spindle 420, a driving rod matched with the driving guide groove in a sliding manner is eccentrically arranged on the end surface of the circular guide wheel close to the vibration frame 230, the driving rod can slide in the driving guide groove along the guiding direction of the driving guide groove in the process that the circular guide wheel rotates around the axis of the circular guide wheel, so that the vibration frame, and finally drives the screen 210 to move synchronously for screening.
More perfect, in order to improve the screening effect of the filter screen 210, the connection end of the vibration frame 230 and the filter screen 210 is provided with a polarization elbow, the extension direction of the polarization elbow is perpendicular to the length direction of the vibration frame 230, and the hinge point of the filter screen 210 and the vibration frame 230 is close to the suspension end of the polarization elbow.
As shown in fig. 15, in order to slow down the moving speed of the material on the screen 210 and thus to have enough time to screen the material, the surface of the screen 210 contacting the material is provided with a washboard material guiding surface which is arrayed and protrudes upwards along the material transporting direction.
The ore sand screening method based on gravity induction comprises the following steps:
a material waiting idling stage;
the power supply device 300 is opened, at the moment, the material is not conveyed to the trigger mechanism 500, the state switching mechanism is in an initial state, at the moment, the gear two 412 is in meshing transmission with the gear five 622, the gear five 622 is in meshing transmission with the gear four 611, the power supply device 300 drives the gear two 412 to rotate through the driving rotating shaft 410, the gear five 622 is in meshing transmission with the gear two 412, the gear four 611 is in meshing transmission with the gear five 622, the gear four 611 drives the switching sleeve 612 to synchronously rotate through the switching main shaft 610, at the moment, the sliding rod 631 slides in the guide groove 612b and moves around the circumference of the switching sleeve 612 in the adjacent guide groove 612b through the transition inclined surface;
(II) screening;
when the material is transported to the trigger mechanism 500, the trigger mechanism 500 is triggered and drives the state switching mechanism 600 to switch from the initial state to the working state, in the process, the trigger push block 621 moves downward under the driving of the trigger mechanism 500, the gear five 622 is gradually disengaged from the gear two 412 and the gear four 611, the driving inclined surface 621b on the trigger push block 621 is contacted with the supporting arm 633 and pushes the pull fork 630 to move along the central axis of the driving rotating shaft 410 to the direction close to the power supply device 300 by overcoming the elastic force of the return spring 413, the bayonet 634 pushes the gear one 411 to move synchronously, at this time, the slide bar 631 enters the driving groove 612a from the guide groove 612b and slides in the driving groove 612a, when the trigger push block 621 moves to guide the vertical surface 621a to be contacted with the supporting arm 633, the trigger mechanism 500 is completely triggered, at this time, the gear five 622 is completely disengaged from the gear two 412 and the gear four 611, the gear one 411 is engaged with the gear, the power supply device 300 drives the gear I411 to rotate through the driving rotating shaft 410, the gear III 421 is meshed with the gear I411 to rotate, and the gear III 421 drives the vibration guide wheel 422 to rotate through the vibration main shaft 420 and finally drives the screening device 200 to vibrate;
(III) a resetting stage;
when the material supply is intermittent, the trigger force disappears at this time, the trigger mechanism 500 returns to the initial state, the state switching mechanism 600 switches from the working state to the initial state, in the process, the trigger push block 621 moves upward under the traction of the trigger mechanism 500, the gear five 622 gradually returns to be engaged with the gear two 412 and the gear four 611, the contact surface between the trigger push block 621 and the support arm 633 transitions from the guide vertical surface 621a to the drive inclined surface 621b, the switching sleeve 612 rotates, the slide rod 631 enters the guide groove 612b from the drive groove 612a along with the rotation of the switching sleeve 612, the support arm 633 moves along the central axis of the drive rotating shaft 410 in the direction away from the power supply device 300, the return spring 413 pushes the gear one 411 to synchronously move, the gear one 411 gradually disengages from the gear three 421, when the trigger push block 621 disengages from the support arm, the gear five 622 completely returns to be engaged with the gear two 412 and the gear four 611, when the first gear 411 is completely disengaged from the third gear 421, the sliding rod 631 enters the guiding groove 612b and moves along the circular motion of the switching sleeve 612 in the adjacent guiding groove 612b through the transition slope, and the process is repeated.
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 (1)
1. The ore sand screening method based on gravity induction comprises the following steps:
a material waiting idling stage;
the power supply device is started, at the moment, the material is not conveyed to the trigger mechanism, the state switching mechanism is in an initial state, at the moment, the second gear is in meshed transmission with the fifth gear, the fifth gear is in meshed transmission with the fourth gear, the power supply device drives the second gear to rotate through the driving rotating shaft, the fifth gear is in meshed transmission with the second gear, the fourth gear is in meshed transmission with the fifth gear, the fourth gear drives the switching sleeve to synchronously rotate through the switching main shaft, at the moment, the sliding rod slides in the guide groove and moves around the circumference of the switching sleeve in the adjacent guide groove through the transition inclined surface;
(II) screening;
the material is transported to the trigger mechanism, the trigger mechanism is triggered and drives the state switching mechanism to switch from the initial state to the working state, in the process, the trigger push block moves downwards under the drive of the trigger mechanism, the gear five is gradually disengaged from the gear two and the gear four, the drive inclined plane on the trigger push block is contacted with the support arm and pushes the shifting fork to overcome the elastic force of the reset spring to move along the central axis of the drive rotating shaft towards the direction close to the power supply device, the bayonet pushes the gear one to move synchronously, at the moment, the slide bar enters the drive groove from the guide groove and slides in the drive groove, when the trigger push block moves to lead the plumb plane to be contacted with the support arm, the trigger mechanism is completely triggered, at the moment, the gear five is completely disengaged from the gear two and the gear four, the gear one is in meshing transmission with the gear three, the power supply device drives the gear one to rotate through the drive, the third gear drives the vibration guide wheel to rotate through the vibration main shaft and finally drives the screening device to vibrate;
(III) a resetting stage;
when the material supply is intermittent, the trigger force disappears at the moment, the trigger mechanism returns to the initial state, the state switching mechanism is switched from the working state to the initial state, in the process, the trigger push block moves upwards under the traction of the trigger mechanism, the gear five is gradually returned to be meshed with the gear two and the gear four, the contact surface of the trigger push block and the supporting arm is transited from the guide vertical surface to the drive inclined surface, the switching sleeve rotates, the slide rod enters the guide groove from the drive groove along with the rotation of the switching sleeve, the supporting arm moves along the central axis of the drive rotating shaft in the direction far away from the power supply device, meanwhile, the return spring pushes the gear to synchronously move, the gear one is gradually disengaged with the gear three, when the trigger push block is disengaged from the supporting arm, the gear five is completely returned to be meshed with the gear two and the gear four, the gear one is completely disengaged with the gear three, and at, the transition inclined planes move around the circumference of the switching sleeve in the adjacent guide grooves repeatedly;
the power supply device is a motor, the motor is coaxially fixed at one end side of the driving rotating shaft and is connected with the driving end of the driving rotating shaft through a coupler, the output end of the driving rotating shaft is connected with a first gear in a sliding mode, a third gear matched and meshed with the first gear is fixedly sleeved at the driving end of the vibration main shaft, a vibration guide wheel matched with the screening device is installed at the output end of the vibration main shaft, and the state switching mechanism can drive the first gear and the third gear to be switched between a meshing state and a disengaging state;
a limiting mechanism for guiding the gear I to move along the axis direction of the driving rotating shaft is arranged between the gear I and the driving rotating shaft, and the gear I can still receive the rotating force from the driving rotating shaft while axially displacing along the driving rotating shaft through the limitation of the limiting mechanism; the limiting mechanism is an external spline arranged at the driving rotating shaft and an internal spline arranged at the first gear and matched with the external spline on the driving rotating shaft;
a spring used for drawing the first gear to move away from the power supply device along the axis of the driving rotating shaft is sleeved outside the driving rotating shaft, a return spring used for pushing the first gear to move towards the second gear is sleeved between the first gear and the power supply device and positioned outside the driving rotating shaft, and elastic resistance provided by the return spring can limit the first gear to move towards the power supply device and is convenient for resetting the mechanism;
the state switching mechanism comprises a switching main shaft which horizontally penetrates through the support shell, is parallel to the driving rotating shaft and is arranged in the same horizontal plane with the driving rotating shaft at intervals, a gear IV is fixedly sleeved at the driving end of the switching main shaft, a switching sleeve is coaxially sleeved at the output end of the switching main shaft, and a shifting fork which can receive the driving of the switching sleeve and push the gear I to move along the axis of the driving rotating shaft is arranged between the switching sleeve and the gear I;
the state switching mechanism also comprises a switching component arranged at intervals among the switching main shaft, the driving main shaft and the shifting fork, and a second gear coaxially fixedly sleeved at the suspension end part of the driving rotating shaft, wherein the switching component comprises a touch push block connected with the trigger mechanism, and a fifth gear which is rotatably arranged on the touch push block and can be respectively matched and meshed with the second gear and the fourth gear;
the switching sleeve is a cylindrical barrel, a switching guide groove is formed in the outer circular surface of the switching sleeve, one end of each shifting fork is in sliding guide fit with the switching guide groove, each switching guide groove comprises a guide groove and a driving groove, the guide grooves are coaxially arranged with the switching sleeve, the driving grooves are communicated with the guide grooves in an angle mode, the guide grooves are arranged close to the four gears, a plurality of switching guide grooves are arrayed along the circumference of the switching sleeve and are arranged at intervals between two adjacent guide grooves, transition inclined surfaces are arranged at the bottoms of the guide grooves, and the transition inclined surfaces can guide the shifting forks to be smoothly transited from one guide groove to the other adjacent guide groove in a one-way mode;
the shifting fork comprises a sliding rod which is in sliding guide fit with the switching guide groove, a bayonet used for pushing the gear I to move along the axis of the driving rotating shaft, and a supporting arm which is arranged between the sliding rod and the bayonet and is fixedly connected with the sliding rod and the bayonet respectively;
the trigger mechanism is arranged at the feeding end of the screening device and comprises a pressing contact plate arranged above the bearing plate in parallel, a material guide groove for materials to pass through is formed above the pressing contact plate, an elastic piece for drawing the pressing contact plate to move away from the bearing plate along the vertical direction is arranged on the pressing contact plate, the trigger mechanism also comprises a trigger rod arranged between the pressing contact plate and the touch push block, one end of the trigger rod penetrates through a yielding hole formed in the bearing plate and is fixedly connected with the pressing contact plate, and the other end of the trigger rod penetrates through a through hole formed in the top of the support shell and is fixedly connected with the touch push block;
the screening device comprises a screen, a swing arm is arranged between the screen and an upper frame, one end of the swing arm is hinged with the upper frame, the other end of the swing arm is hinged with the screen, the hinged shaft core wires are parallel to each other and are parallel to the axial direction of a driving rotating shaft, a discharge opening is arranged at the position, close to the discharge end of the screen, on a bearing plate, a guide chute for guiding materials to be smoothly discharged is arranged at the discharge opening, the screening device also comprises a vibration frame arranged between a vibration guide wheel and the screen, one end of the vibration frame is hinged at the bottom of the screen, the core wire of the hinged shaft is parallel to the axial direction of a driving main shaft, the other end of the vibration frame is in matched transmission with the vibration guide wheel, the vibration frame is a strip-shaped plate body, a driving guide groove extending along the length direction of the vibration frame is arranged at the end part matched with the vibration guide wheel, the vibration guide wheel is a, the end face of the circular guide wheel close to the vibration frame is eccentrically provided with a driving rod matched with the driving guide groove in a sliding mode, and the driving rod can slide in the driving guide groove along the guiding direction of the driving guide groove in the process that the circular guide wheel rotates around the axis of the driving rod, so that the vibration frame can reciprocate in the direction perpendicular to the axis of the driving guide groove.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810009525.XA CN108554772B (en) | 2018-01-05 | 2018-01-05 | Ore sand screening method based on gravity induction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810009525.XA CN108554772B (en) | 2018-01-05 | 2018-01-05 | Ore sand screening method based on gravity induction |
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| CN108554772B true CN108554772B (en) | 2020-06-23 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2323910A (en) * | 1996-10-15 | 1998-10-07 | Rig Technology Ltd | Vibratory screening machine with an inclined mesh screen |
| CN204132265U (en) * | 2014-07-31 | 2015-02-04 | 广州复雅机械设备有限公司 | A kind of vibrations exhaust equipment |
| CN204996703U (en) * | 2015-10-08 | 2016-01-27 | 安徽省润乾节能建材科技股份有限公司 | Air entrainment brick solid raw and other materials processingequipment |
| CN205288946U (en) * | 2015-12-16 | 2016-06-08 | 石狮市酷瑞电气有限责任公司 | Take horizontal screen extension of converter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6540089B2 (en) * | 2001-04-17 | 2003-04-01 | Astec Industries Inc. | Large, stationary, modular aggregate processing plant and method of manufacturing and installing same |
-
2018
- 2018-01-05 CN CN201810009525.XA patent/CN108554772B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2323910A (en) * | 1996-10-15 | 1998-10-07 | Rig Technology Ltd | Vibratory screening machine with an inclined mesh screen |
| CN204132265U (en) * | 2014-07-31 | 2015-02-04 | 广州复雅机械设备有限公司 | A kind of vibrations exhaust equipment |
| CN204996703U (en) * | 2015-10-08 | 2016-01-27 | 安徽省润乾节能建材科技股份有限公司 | Air entrainment brick solid raw and other materials processingequipment |
| CN205288946U (en) * | 2015-12-16 | 2016-06-08 | 石狮市酷瑞电气有限责任公司 | Take horizontal screen extension of converter |
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Effective date of registration: 20200526 Address after: 237400 Huoqiu County Economic Development Zone, Luan City, Anhui Province Applicant after: ANHUI KAIFA MINING INDUSTRY Co.,Ltd. Address before: Shushan District of Hefei City, Anhui province 230022 Xiyou Rd. poly champagne international 1662 Applicant before: Cai Yihe |
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