CN116984236A - Banana screen for mineral aggregate screening - Google Patents
Banana screen for mineral aggregate screening Download PDFInfo
- Publication number
- CN116984236A CN116984236A CN202311245759.1A CN202311245759A CN116984236A CN 116984236 A CN116984236 A CN 116984236A CN 202311245759 A CN202311245759 A CN 202311245759A CN 116984236 A CN116984236 A CN 116984236A
- Authority
- CN
- China
- Prior art keywords
- screen frame
- banana
- baffle
- banana screen
- mineral aggregate
- 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.)
- Granted
Links
- 241000234295 Musa Species 0.000 title claims abstract description 107
- 235000018290 Musa x paradisiaca Nutrition 0.000 title claims abstract description 107
- 238000012216 screening Methods 0.000 title claims abstract description 36
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 23
- 239000011707 mineral Substances 0.000 title claims abstract description 23
- 239000003245 coal Substances 0.000 claims abstract description 40
- 230000005284 excitation Effects 0.000 claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 238000005192 partition Methods 0.000 claims abstract description 27
- 238000006073 displacement reaction Methods 0.000 claims abstract description 11
- 239000003818 cinder Substances 0.000 claims abstract 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 239000007921 spray Substances 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000005065 mining Methods 0.000 abstract description 2
- 239000004744 fabric Substances 0.000 abstract 2
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 229920003225 polyurethane elastomer Polymers 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000005507 spraying 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- 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
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
- B07B1/4636—Regulation of screen apertures
Abstract
The invention relates to the field of industrial and mining equipment, in particular to a banana screen for screening mineral aggregates, which comprises a screen frame, cross bars, a receiving plate, a connecting block, a partition plate, a variable-pitch shaft, an excitation mechanism and a driving mechanism, wherein the screen frame is propped against each other in a layered mode along the banana screen frame in an inclined mode, different coal blocks with different sizes are screened according to different flow rates of the coal blocks on the inclined screen frame and vibration generated by the excitation mechanism. Through the rotation of drive assembly drive displacement axle, the displacement axle makes the baffle remove through the protruding cooperation on guide slot and the baffle, and the same axial position distance of each guide slot equals in order to make the distance of baffle equal, can make the size of the mesh of screen cloth frame after adjusting equal, can adjust the angle and the mesh size of screen cloth frame at any time when banana screen frame sieves the coal cinder, promotes the efficiency of mineral aggregate screening.
Description
Technical Field
The invention relates to the field of industrial and mining equipment, in particular to a banana screen for screening mineral aggregates.
Background
Banana screens are a common screening tool, which is named for its special shape, and are usually composed of banana screen frames, screens, vibrators and the like, and can screen, classify and filter various granular materials. Banana sieves can be used for dry sieving and wet sieving, can be used for size classification and can be used for desliming, dehydration and medium removal, and are widely popularized and used in large coal mills and concentrating mills at present.
The sieve plate of the banana sieve is provided with a stainless steel welding strip seam sieve plate and a polyurethane rubber sieve plate, when the coal mine is screened, the angle of the sieve plate is usually required to be adjusted according to the discharging size of coal blocks in the coal mine, the mesh size of the sieve plate is determined according to the size of the required coal blocks, when the angle is adjusted, the stainless steel welding strip seam sieve plate and the polyurethane rubber sieve plate are required to be shut down and debugged, the mesh size of the stainless steel welding strip seam sieve plate is fixed, the mesh size of the stainless steel welding strip seam sieve plate is difficult to adjust, and the polyurethane rubber sieve plate can replace the sieve plates with different meshes, however, the process of replacing the sieve plate is complicated, the price is high, the replaced sieve plate occupies a large amount of space and is difficult to carry, and the banana sieve plate is very inconvenient. In summary, the current banana screen is difficult to adjust the mesh size of the screen plate and the screening angle in time according to the practical condition of coal block screening.
Disclosure of Invention
In order to overcome the defect that the banana screen is difficult to adjust the mesh size of the screen plate and the screening angle in time according to the practical condition of coal block screening, the invention aims to: the banana screen for mineral aggregate screening can be used for adjusting the screening angle and the mesh size at any time.
The technical implementation scheme of the invention is as follows: the utility model provides a banana screen for mineral aggregate screening, is including basic support, helical compression spring and banana screen frame, still including screen frame, diaphragm, accept board, connecting block, baffle, displacement axle, excitation mechanism and actuating mechanism, the screen frame offsets and is the slope arrangement along banana screen frame layering head and the tail, and the velocity of flow of the coal piece on the slope screen frame according to the size is different, cooperates vibration that excitation mechanism produced simultaneously, sieves the coal piece of size difference, through actuating mechanism drive accept the board and remove to make the banana screen frame movable through articulated connecting block on accepting the board, accept the board and drive banana screen frame left part and remove, thereby change the whole slope of banana screen frame, the rigid coupling has many diaphragms in the screen frame, sliding connection has on many diaphragms, be provided with the displacement axle on the screen frame, the movable connection baffle in the displacement axle, the displacement axle rotates the interval that makes the baffle changes, thereby adjusts the mesh size of screen frame.
Preferably, a helical compression spring is connected between the banana screen frame and the connecting block, the connecting block at the left part is hinged with the bearing plate, the connecting block at the right part is hinged with the basic bracket, the distance-changing shaft is rotationally connected in the banana screen frame, the screen frame is rotationally connected with the distance-changing shaft, a bulge is arranged on one side of the baffle, a guide groove for driving the baffle to move at equal intervals is arranged on the distance-changing shaft, and the bulge is positioned in the corresponding guide groove.
Preferably, a clamping column is connected in the variable-pitch shaft through threads and used for clamping the protrusion of the partition plate.
Preferably, the driving mechanism comprises an electric cylinder and a driving assembly, the electric cylinder is mounted on the basic support, a telescopic rod of the electric cylinder is fixedly connected with the bearing plate, the bearing plate is driven to move up and down by the electric cylinder, the driving assembly is mounted on the banana screen frame, and the driving assembly is used for driving the variable-distance shaft to rotate.
Preferably, the excitation mechanism comprises an excitation motor, an excitation box, a rotating shaft, an eccentric block and an adjusting mechanism, wherein the excitation motor and the excitation box are arranged on the banana screen frame, the rotating shaft which is connected with an output shaft of the excitation motor is rotationally connected with the excitation box, so that vibration is transmitted to the banana screen frame through the excitation box, the eccentric block for providing excitation through centrifugal force is arranged on the rotating shaft, and an adjusting component for adjusting the position of the eccentric block is arranged on the rotating shaft.
Preferably, the adjusting component comprises a nut, a connecting sleeve and a connecting strip, the nut is connected to the rotating shaft through threads, the connecting sleeve is connected to the nut in a rotating mode, the eccentric block is connected to the rotating shaft in a sliding mode, the eccentric block can slide along the direction perpendicular to the rotating shaft, the connecting strip is hinged between the connecting sleeve and the eccentric block, and therefore the position of the eccentric block is adjusted, and the exciting force is adjusted through changing the eccentric radius of the eccentric block.
Preferably, the banana screen frame also comprises a wet screening mechanism, wherein the wet screening mechanism comprises a water pipe and spray heads, the banana screen frame is rotationally connected with the water pipe through a rotary joint, the water pipe can be externally connected with a water source, and the water pipe is provided with a plurality of spray heads.
Preferably, the wet screening mechanism further comprises a driving motor, a gear-missing and a full gear, wherein the driving motor is arranged on the banana screen frame, the gear-missing is connected to an output shaft of the driving motor, the full gear is fixedly connected to the water pipe, and the full gear is meshed with the gear-missing.
Preferably, the banana screen frame further comprises a buffer plate, a first baffle, a second baffle and a telescopic spring, wherein the buffer plate is hinged to the banana screen frame, a torsion spring is arranged between the banana screen frame and the buffer plate, the buffer plate is used for buffering the large coal blocks when the large coal blocks fall down, the first baffle is hinged to the banana screen frame and used for blocking the small coal blocks from falling into corners of the banana screen frame, the second baffle is connected to the inner wall of the banana screen frame through the telescopic spring and fixedly connected with a baffle on the side of the banana screen frame, and the first baffle moves along with the baffle so as to block gaps on two sides of the screen frame.
Preferably, the banana screen frame further comprises bolts, the bolts are connected to the two sides of the screen frame through threads, arc grooves corresponding to the bolts are formed in the front side and the rear side of the banana screen frame, and the screen frame is fixed at different positions of the arc grooves on the banana screen frame through the bolts so as to change the angle of the screen frame.
Compared with the prior art, the invention has the following advantages:
1. according to the invention, the bearing plate is driven to move up and down by the electric cylinder, the bearing plate moves up and down to drive the left part of the banana screen frame to move up and down, so that the angle of the banana screen frame and the screen frame are adjusted, the distance-changing shaft is driven to rotate by the driving component, the distance-changing shaft is matched with the protrusions on the partition plates through the guide grooves to enable the partition plates to move, the same axial position distances of the guide grooves are equal to enable the distance of the partition plates to be equal, the sizes of the net holes of the adjusted screen frame are equal, the angle and the mesh size of the screen frame can be adjusted at any time when the banana screen frame screens coal, and the mineral aggregate screening efficiency is improved.
2. According to the invention, the nut and the connecting sleeve are moved to one side close to or far from the eccentric block by screwing the nut by the spanner, and the eccentric block is driven by the connecting strip to move along the direction vertical to the rotating shaft, so that the eccentric radius of the eccentric block is changed, the exciting force is adjusted, the rotating speed is adjusted without using a variable frequency motor, and the cost is saved.
3. According to the invention, the driving motor drives the gear lack to rotate, and the water pipe is driven to swing back and forth to spray mineral aggregate in the banana screen frame to perform wet screening through intermittent meshing of the gear lack and the full gear, so that dust and impurities in a coal mine are removed.
4. According to the invention, the baffle I is used for blocking gaps between the baffle plate and the screen frame, the baffle II is used for blocking fine mineral aggregate, the fine mineral aggregate is prevented from falling into corners of the banana screen frame, and the buffer plate is used for buffering the massive mineral aggregate, so that damage of the massive coal to the screen frame is reduced.
5. According to the invention, the screen frames are fixed at different positions of the arc-shaped grooves on the banana screen frames through the bolts, so that the angles of the screen frames are changed, and the inclination angles of the screen frames can be adjusted in a segmented manner.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic view of the screen frame, the receiving plate and the connecting block of the present invention in a specific position.
Fig. 3 is a schematic view of the screen frame, the partition plate, the pitch axis, etc. of the present invention.
Fig. 4 is an exploded view of the spacer and the pitch axis of the present invention.
Fig. 5 is a cross-sectional view of the pitch horn and the clamping post of the present invention.
Fig. 6 is a schematic view of the excitation mechanism and wet screen mechanism of the present invention.
Fig. 7 is a schematic view of the rotating shaft, eccentric mass, nut, etc. of the present invention.
FIG. 8 is a schematic view of a baffle plate, baffle one and baffle two of the present invention.
Wherein the above figures include the following reference numerals: 1. basic bracket, 2, spiral compression spring, 3, banana screen frame, 4, screen frame, 401, horizontal bar, 5, bearing plate, 6, connecting block, 7, baffle, 8, variable-pitch shaft, 701, protrusion, 801, guide slot, 9, clamping column, 21, electric cylinder, 22, driving component, 30, exciting motor, 31, exciting box, 32, rotating shaft, 33, eccentric block, 34, nut, 35, connecting sleeve, 36, connecting bar, 41, water pipe, 42, spray head, 43, driving motor, 44, gear lack, 45, all gear, 61, buffer plate, 62, baffle one, 63, baffle two, 64, telescopic spring, 71, arc groove, 72 and bolt.
Detailed Description
It should be noted that in the various embodiments described, identical components are provided with identical reference numerals or identical component names, wherein the disclosure contained throughout the description can be transferred in a meaning to identical components having identical reference numerals or identical component names. The position specification, the upper, lower, lateral, etc. selected in the description are also referred to directly in the description and the figures shown and are transferred in the sense of a new position when the position is changed.
Examples: a banana screen for screening mineral aggregate is shown in figures 1-7, and comprises a basic bracket 1, a helical compression spring 2 and a banana screen frame 3, wherein the left part of the banana screen frame 3 is provided with a feed inlet, the right part of the banana screen frame 3 is provided with a discharge outlet, the banana screen also comprises a screen frame 4, a bearing plate 5, a connecting block 6, a partition plate 7, a distance-changing shaft 8, an excitation mechanism and a driving mechanism, the right part of the basic bracket 1 is hinged with the connecting block 6, the connecting block 6 at the left part is arranged left and right, the connecting block 6 at the right part is hinged with the basic bracket 1, the helical compression spring 2 is connected between the connecting block 6 and the banana screen frame 3, at least three distance-changing shafts 8 are rotationally connected with the banana screen frame 4, the screen frame 4 is propped against each other in a layer head and tail along the banana screen frame 3 and is obliquely arranged, the inclination angle of the screen frame 4 descends along with the advancing of the material, the gradient is gradually slowed down until the discharge hole, the gradient is reduced to 10 degrees from 34 degrees, according to the different flow rates of coal blocks on the inclined screen frame 4 with different sizes, the coal blocks with different sizes are screened by matching with vibration generated by an excitation mechanism, the larger coal blocks are rapidly discharged from the discharge hole at the right part of the banana screen frame 3, the small coal blocks can fall into a collecting frame arranged below through meshes of the screen frame 4, a bearing plate 5 is driven to move up and down by a driving mechanism, and a connecting block 6 is hinged on the bearing plate 5, so that the banana screen frame 3 has certain movement capability, the bearing plate 5 drives the left part of the banana screen frame 3 to move up and down, the whole gradient of the banana screen frame 3 is changed, the screen frame 4 consists of a plurality of transverse bars 401, a baffle 7 which can slide back and forth on the screen frame 4 is connected in a sliding manner, the horizontal bars 401 on the screen frame 4 are perpendicular to the partition plates 7, the horizontal bars 401 of the screen frame 4 and the partition plates 7 with uniform intervals form meshes with the same size, one side of the partition plates 7 is provided with protrusions 701, the distance-changing shaft 8 is movably connected with the partition plates 7, guide grooves 801 which drive the partition plates 7 to move and enable the partition plates to be always equidistant are formed in the distance-changing shaft 8, the guide grooves 801 are arc-shaped, the distance between the guide grooves 801 and the guide grooves 801 on the same straight line with the axial direction of the distance-changing shaft 8 is the same, the protrusions 701 are located in the corresponding guide grooves 801, and the distance of the partition plates 7 is changed by driving the distance-changing shaft 8 to rotate through a driving mechanism, so that the mesh size of the screen frame 4 is adjusted.
As shown in fig. 5, a clamping column 9 is connected in the pitch-variable shaft 8 through threads, the clamping column 9 is inserted into the pitch-variable shaft 8 from the rear end of the pitch-variable shaft 8, as a certain gap is reserved between a protrusion 701 on the partition plate 7 and a guide groove 801 of the pitch-variable shaft 8, the partition plate 7 can slightly shift during vibration, the clamping column 9 is used for clamping the protrusion 701 of the partition plate 7, initially, the clamping column 9 is contacted with the protrusion 701 on the partition plate 7, before the pitch-variable shaft 8 is adjusted, the rear end of the clamping column 9 can be screwed by two hands, the clamping column 9 is rotated and then is not contacted with the protrusion 701 on the partition plate 7, at the moment, the distance of the partition plate 7 can be adjusted by rotating the pitch-variable shaft 8, after the distance of the partition plate 7 is adjusted, the rear end of the clamping column 9 is reversely screwed by hands, the protrusion 701 on the partition plate 7 is clamped by the clamping column 9, and the protrusion 701 on the partition plate 7 is limited by the arc-shaped guide groove 801 matched with the pitch-variable shaft 8, so that the partition plate 7 is prevented from moving during vibration.
As shown in fig. 1-3, the driving mechanism comprises an electric cylinder 21 and a driving assembly 22, two electric cylinders 21 are installed on the basic bracket 1, a bearing plate 5 is connected between telescopic rods of the electric cylinders 21, the distance of up-down movement of the bearing plate 5 can be accurately controlled through the electric cylinders 21, accordingly, the change of the angle of the banana screen frame 3 can be accurately regulated, the driving assembly 22 is installed on the banana screen frame 3, the driving assembly 22 comprises a motor and a synchronous belt, an output shaft of the motor is connected with one of the variable-pitch shafts 8, the variable-pitch shafts 8 are driven to rotate through the motor, and other variable-pitch shafts 8 are driven to rotate through the synchronous belt, so that the mesh size of each screen frame 4 is synchronously regulated.
As shown in fig. 1, 6 and 7, the excitation mechanism comprises an excitation motor 30, an excitation box 31, a rotating shaft 32, eccentric blocks 33 and an adjusting mechanism, wherein the excitation motor 30 and a plurality of excitation boxes 31 are installed on the banana screen frame 3, the rotating shaft 32 connected with an output shaft of the excitation motor 30 is rotationally connected with the excitation box 31, the rotating shaft 32 is driven to rotate by the excitation motor 30 so as to transmit vibration to the banana screen frame 3 through the excitation box 31, the eccentric blocks 33 for providing excitation by centrifugal force are arranged on the rotating shaft 32, and an adjusting component for adjusting the positions of the eccentric blocks 33 is arranged on the rotating shaft 32.
As shown in fig. 6 and 7, the adjusting assembly includes a nut 34, a connecting sleeve 35 and a connecting bar 36, the nut 34 is connected to the rotating shaft 32 through a screw, the nut 34 and the rotating shaft 32 are fastened at first, when the exciting force is required to be adjusted, the nut 34 is required to be screwed by a wrench so that the nut 34 moves along the axial direction of the rotating shaft 32, the connecting sleeve 35 is connected to the nut 34 in a rotating manner, the connecting sleeve 35 can rotate on the nut 34, the positions of the nut 34 and the connecting sleeve 35 are simultaneously changed, the rotating shaft 32 is slidingly connected with an eccentric block 33, the eccentric block 33 can slide along the direction perpendicular to the rotating shaft 32, a connecting bar 36 is hinged between the connecting sleeve 35 and the eccentric block 33, and the position of the connecting sleeve 35 along the axial direction of the rotating shaft 32 is converted into the position of the eccentric block 33 along the direction perpendicular to the rotating shaft 32 through the connecting bar 36, so that the position of the eccentric block 33 is adjusted, and the exciting force is adjusted by changing the eccentric radius.
As shown in FIG. 6, the wet screening device comprises a water pipe 41 and a spray nozzle 42, the front part of the banana screen frame 3 is rotationally connected with the water pipe 41 through a rotary joint, the water pipe 41 can rotate through the rotary joint, the front end of the water pipe 41 can be externally connected with a water source through the rotary joint, a plurality of spray nozzles 42 are uniformly arranged on the water pipe 41 at intervals, water is sprayed to a coal mine through the spray nozzles 42, the wet screening treatment effect is achieved, and dust impurities in coal blocks are removed.
As shown in fig. 6, the wet screening mechanism further includes a driving motor 43, a gear-missing 44 and a full gear 45, the banana screen frame 3 is provided with the driving motor 43, the output shaft of the driving motor 43 is connected with the gear-missing 44, the gear-missing 44 is driven to rotate by the driving motor 43, the full gear 45 is fixedly connected to the water pipe 41, the full gear 45 is meshed with the gear-missing 44, the full gear 45 and the water pipe 41 are intermittently driven to rotate by the gear-missing 44, and when the full gear 45 is not meshed with the gear-missing 44, the full gear 45 and the water pipe 41 are reset under the action of gravity and inertia, so that the water pipe 41 swings and turns, and the spraying range of the spray head 42 is enlarged.
As shown in FIG. 8, the buffer plate 61, the first baffle 62, the second baffle 63 and the telescopic spring 64 are further included, the buffer plate 61 is hinged to the banana screen frame 3, a torsion spring is arranged between the banana screen frame 3 and the buffer plate 61, after the larger coal blocks directly fall into the banana screen frame 3 from the feeding hole, the falling speed of the large coal mines is faster, the large coal mines are smashed on the screen frame 4, long-time impact can damage the screen frame 4, the large coal blocks can fall down through the buffer plate 61 to form buffering, abrasion of the screen frame 4 is reduced, the first baffle 62 is hinged to the left part in the banana screen frame 3, the first baffle 62 is used for blocking small coal blocks to fall into corners of the banana screen frame 3, the small coal blocks are prevented from falling into the guide groove 801 of the variable-pitch shaft 8, the inner wall of the banana screen frame 3 is connected with the second baffle 63 through the telescopic spring 64, the second baffle 63 is fixedly connected with the baffle 7 at the side edges, the first baffle 62 moves along with the baffle 7, when the interval of each baffle 7 becomes smaller, the baffles 7 need to be gathered towards the middle, and the two baffles 7 and the two sides of the screen frame 4 can block gaps 63 through the two baffles 4.
As shown in fig. 8, the banana screen frame further comprises bolts 72, the two sides of the screen frame 4 are connected with the bolts 72 through threads, the arc grooves 71 corresponding to the bolts 72 are formed in the front side and the rear side of the banana screen frame 3, the screen frame 4 is fixed at different positions of the arc grooves 71 on the banana screen frame 3 through the bolts 72, so that the angle of each screen frame 4 is changed, the screening angle is further and sectionally fine-tuned, and the screening effect is improved.
Before use, the nut 34 and the connecting sleeve 35 can be screwed by a spanner to move to one side close to or far from the eccentric block 33, the eccentric block 33 is driven by the connecting bar 36 to move to the direction vertical to the axial direction of the rotating shaft 32, so as to change the eccentric radius of the eccentric block 33, and accordingly exciting force is adjusted, after the exciting motor 30 is started, a coal mine is placed into the banana screen frame 3 from a feed inlet of the banana screen frame 3, the coal mine is screened, when the angle of the screen frame 4 is required to be adjusted, the electric cylinder 21 is started, the bearing plate 5 and the connecting block 6 at the left end of the banana screen frame 3 are driven by the electric cylinder 21 to move up and down, so that the whole banana screen frame 3 is inclined, high-efficiency screening is achieved according to the concrete condition of the coal block and by accurate control of the electric cylinder 21, after the adjustment, the electric cylinder 21 is closed, when the mesh size of the screen frame 4 is required to be adjusted, starting a motor, driving each pitch-changing shaft 8 to rotate through a synchronous belt, enabling each pitch-changing shaft 8 to rotate through the cooperation of a guide groove 801 and a bulge 701 on a baffle 7 to enable the baffle 7 to move, enabling the distance between the same axial positions of the guide grooves 801 to be equal to the distance between the baffle 7 and the baffle 7, enabling the mesh hole size of an adjusted screen frame 4 to be equal, closing the motor after adjustment, communicating a water pipe 41 with an external water source when coal is required to be wet screened, driving a gear-lack 44 to rotate through a driving motor 43, driving the gear-lack 45 and the water pipe 41 to rotate through the gear-lack 44 when the gear-lack 44 is meshed with the gear-lack 45, enabling the water pipe 41 to rotate towards the other side under the action of gravity and inertia when the gear-lack 44 is not meshed with the gear-lack 45, intermittently meshing the gear-lack 44 with the gear-lack 45 to spray coal blocks in a banana screen frame 3 to be wet screened, thereby removing impurities in the coal mine.
The embodiments described above are intended to provide those skilled in the art with a full range of modifications and variations to the embodiments described above without departing from the inventive concept thereof, and therefore the scope of the invention is not limited by the embodiments described above, but is to be accorded the broadest scope consistent with the innovative features recited in the claims.
Claims (10)
1. A banana screen for mineral aggregate screening comprises a basic bracket (1), a spiral compression spring (2) and a banana screen frame (3), and is characterized in that: still including screen frame (4), diaphragm (401), accept board (5), connecting block (6), baffle (7), displacement axle (8), excitation mechanism and actuating mechanism, screen frame (4) offset and are the slope arrangement along banana screen frame (3) layering head and tail, and the coal cinder of difference according to the size is different on inclined screen frame (4) velocity of flow, and the vibration that cooperation excitation mechanism produced simultaneously sieves the coal cinder of difference in size, through actuating mechanism drive accept board (5) and remove to make banana screen frame (3) movable through articulated connecting block (6) on accepting board (5), accept board (5) and drive banana screen frame (3) left part and remove, thereby change the whole slope of banana screen frame (3), the rigid coupling has many diaphragms (401) in screen frame (4), be provided with displacement axle (8) on banana screen frame (3), displacement axle (7) change mesh (8) in the displacement, thereby change the mesh of displacement axle (7).
2. A banana screen for mineral aggregate screening according to claim 1, wherein: the banana screen frame (3) is connected with a spiral compression spring (2) between the connection block (6), the connection block (6) at the left part is hinged with the bearing plate (5), the connection block (6) at the right part is hinged with the basic support (1), the distance-changing shaft (8) is rotationally connected in the banana screen frame (3), the screen frame (4) is rotationally connected with the distance-changing shaft (8), a bulge (701) is arranged on one side of the partition plate (7), guide grooves (801) for driving the partition plate (7) to move at equal intervals are formed in the distance-changing shaft (8), and the bulge (701) is located in the corresponding guide grooves (801).
3. A banana screen for mineral aggregate screening as claimed in claim 2, wherein: the inside of the variable-pitch shaft (8) is connected with a clamping column (9) through threads, and the clamping column (9) is used for clamping a bulge (701) of the partition plate (7).
4. A banana screen for mineral aggregate screening according to claim 1, wherein: the driving mechanism comprises an electric cylinder (21) and a driving assembly (22), wherein the electric cylinder (21) is installed on the basic bracket (1), a telescopic rod of the electric cylinder (21) is fixedly connected with the bearing plate (5), the bearing plate (5) is driven to move up and down through the electric cylinder (21), the driving assembly (22) is installed on the banana screen frame (3), and the driving assembly (22) is used for driving the variable-pitch shaft (8) to rotate.
5. A banana screen for mineral aggregate screening according to claim 1, wherein: the vibration excitation mechanism comprises a vibration excitation motor (30), a vibration excitation box (31), a rotating shaft (32), an eccentric block (33) and an adjusting mechanism, wherein the vibration excitation motor (30) and the vibration excitation box (31) are installed on the banana screen frame (3), the rotating shaft (32) connected with an output shaft of the vibration excitation motor (30) is rotationally connected to the vibration excitation box (31) so as to transmit vibration to the banana screen frame (3) through the vibration excitation box (31), the eccentric block (33) for providing vibration excitation through centrifugal force is arranged on the rotating shaft (32), and an adjusting component for adjusting the position of the eccentric block (33) is arranged on the rotating shaft (32).
6. A banana screen for mineral aggregate screening as claimed in claim 5, wherein: the adjusting component comprises a nut (34), a connecting sleeve (35) and a connecting strip (36), wherein the nut (34) is connected to the rotating shaft (32) through threads, the connecting sleeve (35) is connected to the rotating shaft (32) in a rotating mode, the eccentric block (33) is connected to the rotating shaft (32) in a sliding mode, the eccentric block (33) can slide along the direction perpendicular to the rotating shaft (32), the connecting strip (36) is hinged between the connecting sleeve (35) and the eccentric block (33), and therefore the position of the eccentric block (33) is adjusted, and the exciting force is adjusted by changing the eccentric radius of the eccentric block (33).
7. A banana screen for mineral aggregate screening according to claim 1, wherein: the banana screen frame (3) is rotationally connected with the water pipe (41) through a rotary joint, the water pipe (41) can be externally connected with a water source, and a plurality of spray heads (42) are arranged on the water pipe (41).
8. A banana screen for mineral aggregate screening as claimed in claim 7, wherein: the wet screening mechanism further comprises a driving motor (43), a gear-missing (44) and a full gear (45), the driving motor (43) is arranged on the banana screen frame (3), the gear-missing (44) is connected to an output shaft of the driving motor (43), the full gear (45) is fixedly connected to the water pipe (41), and the full gear (45) is meshed with the gear-missing (44).
9. A banana screen for mineral aggregate screening according to claim 1, wherein: still including buffer board (61), baffle one (62), baffle two (63) and extension spring (64), articulated on banana reel (3) have buffer board (61), be equipped with the torsional spring between banana reel (3) and buffer board (61), buffer board (61) are used for forming the buffering when falling to the massive coal cinder, and the articulated baffle one (62) in banana reel (3), and baffle one (62) are used for blocking tiny coal cinder and fall into in the corner of banana reel (3), banana reel (3) inner wall is connected with baffle two (63) through extension spring (64), baffle two (63) and baffle (7) rigid coupling of side, and baffle one (62) follow baffle (7) and remove to the gap of screen frame (4) both sides is blocked.
10. A banana screen for mineral aggregate screening according to claim 1, wherein: still including bolt (72), there is bolt (72) screen frame (4) both sides through threaded connection, both sides are equipped with arc groove (71) corresponding with bolt (72) around banana screen frame (3), are fixed in the different positions of arc groove (71) on banana screen frame (3) screen frame (4) through bolt (72) to change the angle of screen frame (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311245759.1A CN116984236B (en) | 2023-09-26 | 2023-09-26 | Banana screen for mineral aggregate screening |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311245759.1A CN116984236B (en) | 2023-09-26 | 2023-09-26 | Banana screen for mineral aggregate screening |
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| CN116984236B CN116984236B (en) | 2023-12-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117531692A (en) * | 2024-01-10 | 2024-02-09 | 新乡市高服机械股份有限公司 | Biax is from synchronous sharp banana shale shaker |
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| Publication number | Publication date |
|---|---|
| CN116984236B (en) | 2023-12-19 |
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