CN114602781B - Multistage screening plant after ore crushing - Google Patents

Abstract

The invention provides a multistage screening device after ore crushing, which belongs to the technical field of ore screening and comprises a plurality of arc-shaped screen plates, wherein the arc-shaped screen plates are distributed from top to bottom, the circle centers of the arc-shaped screen plates distributed from top to bottom are the same, the aperture of screening holes on the arc-shaped screen plates is sequentially reduced from top to bottom, baffles are arranged on the front side and the rear side of each arc-shaped screen plate, the baffles and the corresponding arc-shaped screen plates form an arc-groove-shaped screening area, scraping plates are movably arranged in the screening area and do reciprocating swing motion in the screening area, and the inclination states of the scraping plates are discontinuously changed in the reciprocating swing process so as to control the distance between the scraping plates and the corresponding arc-shaped screen plates. This multistage screening plant in ore crushing back has effectively reduced the pressure of whole screening, avoids screening pressure too big and the mesh blockage problem that causes, corresponding improvement the quality of screening, and sustainable stable keeps high-quality screening work.

Description

Multistage screening plant after ore crushing

Technical Field

The invention relates to the technical field of ore screening, in particular to a multistage screening device after ore crushing.

Background

In order to improve the application quality of the ore, the ore needs to be sieved after being crushed to improve the uniformity of the granularity of the ore, and the crushed ore needs to be sieved in multiple stages to ensure the uniformity of the granularity of the ore due to the large difference range of the granularity after being crushed.

Multistage screening mainly utilizes the sieve of different apertures to sieve the ore after smashing with the mode that the aperture is big to little in proper order, and current screening plant all is once only a large amount of ores at the in-process of screening usually, treats to sieve and takes out the ore after the screening after accomplishing, and then repeated screening is carried out, and the problem that mainly exists at the screening process is that whole screening pressure is too big, causes the sieve mesh to block up easily and reduces the quality of screening.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides a multi-stage screening device after ore crushing, which is achieved by the following specific technical means: the sieve plate comprises a plurality of arc sieve plates, the arc sieve plates are distributed from top to bottom, the circle centers of the arc sieve plates distributed from top to bottom are the same, the aperture of the sieving holes in the arc sieve plates is sequentially reduced from top to bottom, baffles are arranged on the front side and the rear side of each arc sieve plate, the front end part and the rear end part of each arc sieve plate are slidably inserted into the corresponding baffles, a fixing frame is connected onto each baffle, each baffle and the corresponding arc sieve plate form an arc-groove-shaped sieving area, the left side and the right side of each sieving area are respectively connected with a discharging port, scraping plates are movably arranged in the sieving areas and do reciprocating swing motion in the sieving areas, the swinging base points are the same as the circle centers, the scraping plates are discontinuously changed in the inclined state in the reciprocating swing process so as to control the distance between the scraping plates and the corresponding arc sieve plates, a drive control assembly is connected onto the fixing frame, the drive control assembly comprises a drive shaft, and a transfer piece is connected onto the drive shaft, screw thread is pegged graft on the adaptor and is had adjusting screw, scrape the flitch and rotate to connect on the adaptor through the connecting axle, scrape flitch and connecting axle fixed connection, the connecting axle rotates with the adaptor to be connected, adjusting screw slides and pegs graft on the connecting axle, the coincidence of the two axis, and adjusting screw only follows the endwise slip of connecting axle, adjusting screw keeps away from the one end fixedly connected with gear of scraping the flitch, the fixed point is provided with the arc rack section with gear movable engagement on the mount, and still be provided with the actuating mechanism that drive arc sieve was seesaw on the mount.

The first preferred technical scheme is as follows: the baffle is the arc, and upper and lower adjacent baffle fixed connection is in the same place, upper and lower adjacent arc sieve and corresponding baffle around have constituted and have controlled the open-ended screening chamber, wherein, be provided with the upper cover plate on the arc sieve at top, the feed inlet has been seted up on the upper cover plate, the below that is located the arc sieve of bottom is provided with the direction blanking mouth, the discharge gate corresponds with the opening, and the discharge gate includes the curb plate that corresponds around the butt joint direction bottom plate, butt joint direction bottom plate and corresponding arc sieve butt joint, and the one side downward sloping of arc sieve is kept away from to the butt joint direction bottom plate, the adaptor is ring shape, and the adaptor rotates to scarf joint on corresponding baffle, through upper and lower adjacent arc sieve and around corresponding baffle combination become about the open-ended screening chamber with the screening district of arc trough shape originally.

The preferred technical scheme is as follows: scrape and seted up the through-hole on the flitch, scrape on the flitch through-hole the same with the screening hole on the corresponding sieve bend, the left and right sides of scraping the flitch of symmetry all is provided with flourishing subassembly, flourishes the subassembly and includes radial connecting rod, and radial connecting rod fixed connection is connected with the total support column on the radial connecting rod on the adaptor, and the left and right sides on the total support column all is connected with a plurality of L shape driving levers, and a plurality of L shape driving levers are by preceding evenly distributed backward, and the distribution of staggering of a plurality of L shape driving levers of the left and right sides.

The preferred technical scheme is three: the arc rack section distributes along the removal orbit of gear, and the arc rack section is bilateral symmetry form simultaneously and distributes, and spacing sliding connection is provided with the extensible member on the mount around the arc rack section on the mount, and the extensible member slides around being used for controlling the arc rack section.

The preferable technical scheme is four: the top of scraping the flitch is provided with the live-rollers, evenly is provided with the liftout piece on the live-rollers, and the liftout piece corresponds with the sieve mesh on the corresponding arc sieve above the live-rollers.

The preferred technical scheme is five: be connected with supplementary stabilizing member on the adaptor, supplementary stabilizing member includes X shape connecting seat, and X shape connecting seat rotates to be connected on the adaptor, and four extreme points department equal fixedly connected with spacing posts of X shape connecting seat, spacing post two bisymmetry, and the spacing post of symmetry is located the corresponding left and right sides of scraping the flitch respectively, and X shape connecting seat cup joints on adjusting screw and only along adjusting screw's axial slip.

The preferred technical scheme is six: actuating mechanism drives the axle including linking board, spacing frame, eccentric wheel and always, always drives the vertical rotation of axle and connects on the mount, links board and arc sieve one-to-one, sliding connection just links board fixed connection on corresponding arc sieve around linking the board on the mount, and spacing frame fixed connection is on linking the board respectively, and the eccentric wheel is fixed to be cup jointed always driving epaxially, eccentric wheel and spacing frame one-to-one, and the eccentric wheel is located spacing frame.

The invention has the following beneficial effects: 1. this multistage screening plant of back is smashed to ore passes through arc sieve, baffle, discharge gate, scrapes flitch, adaptor, adjusting screw, arc rack section, actuating mechanism, even board, flourishing subassembly and auxiliary stabilization spare's combined action, has effectively reduced the pressure of whole screening, avoids screening pressure too big and the sieve mesh jam problem that causes, corresponding improvement the quality of screening, and sustainable stable keeps high-quality screening work.

2. This multistage screening plant after ore crushing passes through the arc sieve, scrape the flitch, the adaptor, adjusting screw and the combined action of arc rack section, the continuous ore that will sieve out is scraped away and is sent to the storage area and alleviate the pressure of screening, and scraping the in-process of ore, scrape the interval between flitch and the arc sieve and can change voluntarily, not only can avoid being scraped the ore a large amount of fall back in scraping the clearance between flitch and the arc sieve, corresponding improvement scrape the effect of material, can avoid the ore that is not sieved away to be scraped away simultaneously, corresponding improvement the homogeneity of the ore granularity after the screening.

3. This multistage screening device after ore crushing passes through arc sieve and actuating mechanism's combined action, sieves the ore through the reciprocating motion around the arc sieve, and can be nimble control adjacent arc sieve reciprocating motion's direction, and then improves the variety of screening in-process ore atress direction, and corresponding increase the liveness of ore, improved the effect of screening, and had simple structure's advantage.

4. This multistage screening plant after ore crushing is through scraping flitch, adaptor, adjusting screw, arc rack section, extensible member, live-rollers and the combined action of ejecting, when the screening is about to the end, controls the state of scraping the flitch, makes it scrape away all with the ore in corresponding screening zone territory, undetermined live-rollers clears up corresponding arc sieve simultaneously.

Drawings

FIG. 1 is a front view of the overall structure of the present invention.

Fig. 2 is a schematic rear view of the present invention.

Fig. 3 is a schematic structural view of an arc-shaped sieve plate and a discharge hole.

Fig. 4 is an enlarged view of the invention at a in fig. 3.

Fig. 5 is an enlarged view of the invention at B in fig. 4.

Fig. 6 is a schematic structural diagram of the arc-shaped sieve plate and the driving mechanism of the invention.

Fig. 7 is a schematic view of the construction of the adapter and the arcuate rack segment of the present invention.

Fig. 8 is a schematic view showing the state of the scraper plate in the initial state of the present invention.

Fig. 9 is a schematic structural view of the scraper plate of the present invention.

In the figure: 1. an arc-shaped sieve plate; 2. a baffle plate; 3. a fixed mount; 4. a discharge port; 41. butting a guide bottom plate; 42. a side plate; 5. a scraping plate; 6. a drive shaft; 7. an adapter; 8. adjusting the screw rod; 9. an arc-shaped rack segment; 10. a drive mechanism; 101. connecting plates; 102. a limiting frame; 103. an eccentric wheel; 104. a main drive shaft; 11. an upper cover plate; 12. guiding a blanking port; 13. a through hole; 14. an active component; 141. a radial connecting rod; 142. a general support column; 143. an L-shaped deflector rod; 15. a telescoping member; 16. a rotating roller; 17. ejecting the part; 18. an auxiliary stabilizer; 181. an X-shaped connecting seat; 182. a limiting column.

Detailed Description

The technical solutions in the embodiments of the present invention will be 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 of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1, fig. 3, fig. 6 and fig. 8, a multi-stage screening device after ore crushing comprises a plurality of arc-shaped screen plates 1, wherein the arc-shaped screen plates 1 are distributed from top to bottom, the circle centers of the arc-shaped screen plates 1 distributed from top to bottom are the same, the aperture of the screening holes on the arc-shaped screen plates 1 is sequentially reduced from top to bottom, the front and back sides of the arc-shaped screen plates 1 are respectively provided with a baffle 2, the front and back ends of the arc-shaped screen plates 1 are respectively inserted on the corresponding baffle 2 in a sliding manner, the baffle 2 is connected with a fixing frame 3, the baffle 2 and the corresponding arc-shaped screen plates 1 form an arc-shaped screening area, the left and right sides of the screening area are respectively connected with a discharge port 4, the position of the discharge port 4 is provided with a corresponding storage area, the ore can fall into the storage area after coming out from the discharge port 4 (the structural schematic diagram of the storage area is not shown in the figure), a scraping plate 5 is movably arranged in the screening area, and the scraping plate 5 performs reciprocating swing motion in the screening area, the swinging base point is the same as the circle center of the arc-shaped sieve plate 1, the scraping plate 5 is in the inclined state which is discontinuously changed in the reciprocating swinging process so as to control the distance between the scraping plate 5 and the corresponding arc-shaped sieve plate 1, in the screening process, crushed ores are continuously and discontinuously fed into the uppermost screening area, the ores sequentially pass through the arc-shaped sieve plate 1 from top to bottom, the arc-shaped sieve plate 1 performs front-back sliding motion to screen the passing ores, the screened ores are positioned in the screening area, meanwhile, the scraping plate 5 performs left-right reciprocating swinging motion, in the swinging process, the ores positioned at the upper part in the corresponding screening area are scraped, the scraped ores overflow from the discharge port 4 into the storage area along with the swinging of the scraping plate 5 to the highest point, as shown in figure 8, in the initial state, the scraping plate 5 is positioned in the middle of the screening area, and the lower part of the left scraping plate 5 inclines rightwards, the lower part of the right scraping plate 5 inclines leftwards, when the scraping plate 5 swings rightwards, the right scraping plate 5 scrapes away ores in the right area, the scraped ores overflow from the right discharge hole 4, otherwise, the left scraping plate 5 scrapes away the left ores and overflows from the left discharge hole 4, and the scraping is synchronous with the screening, a certain amount of unscreened ores exist near the bottom of the arc-shaped screen plate 1 in the scraping process, so the distance between the scraping plate 5 and the arc-shaped screen plate 1 is maximum in the initial state, the unscreened ores can be effectively prevented from being scraped away in the scraping process, the uniformity of the granularity of the screened ores is correspondingly improved, secondly, when the scraping plate 5 swings rightwards, the distance between the right scraping plate 5 and the corresponding arc-shaped screen plate 1 is gradually reduced from low to high, the scraped ores can be stably gathered between the right scraping plate 5 and the arc-shaped screen plate 1, and overflow from the discharge gate 4 on the right side, not only can avoid the large amount of ores scraped to fall back down in the clearance between scraping flitch 5 and arc sieve 1, reduce the effect of scraping the material, can avoid the too much ore that is detained in the screening district and increase the pressure of screening simultaneously, otherwise the same reason, combine, through lasting discontinuous pay-off, lasting incessant screening and synchronous scraping, the pressure of whole screening has effectively been reduced, can avoid screening pressure too big and the mesh jam problem that causes, the corresponding quality that has improved the screening, and sustainable stable screening work that keeps high-quality.

Referring to fig. 2, 3, 4 and 7, a driving control assembly is connected to the fixing frame 3, the driving control assembly includes a driving shaft 6, an adaptor 7 is connected to the driving shaft 6, an adjusting screw 8 is inserted into the adaptor 7 in a threaded manner, the adjusting screw 8 corresponds to the scraping plate 5 one by one, the scraping plate 5 is rotatably connected to the adaptor 7 through a connecting shaft, the scraping plate 5 is fixedly connected to the connecting shaft, the connecting shaft is rotatably connected to the adaptor 7, the adjusting screw 8 is slidably inserted into the connecting shaft, the axes of the adjusting screw and the connecting shaft coincide, the adjusting screw 8 only slides along the axial direction of the connecting shaft, a gear is fixedly connected to one end of the adjusting screw 8 away from the scraping plate 5, an arc-shaped rack segment 9 movably engaged with the gear is arranged at a fixed point on the fixing frame 3, during the scraping process, the scraping plate 5 is driven to make a reciprocating swing motion through the adaptor 7 by the reciprocating rotation of the driving shaft 6, adjusting screw 8 can pass through arc rack section 9, gear on it and arc rack section 9 meshing and drive adjusting screw 8 and rotate this moment, adjusting screw 8 passes through the connecting axle and drives scraping flitch 5 and rotate certain angle, combine shown in figure 7 and figure 8, when scraping flitch 5 by initial condition swing right, the flitch 5 of scraping on right side upwards rotates under adjusting screw 8's drive, its and corresponding arc sieve 1 between the interval can reduce, and when left scraping flitch 5 when this arc rack section 9, synchronous upwards rotates, and its and corresponding arc sieve 1 between the interval can increase, make it can not influence the right side scrape flitch 5 and normally scrape the material work, otherwise the same reason.

Referring to fig. 1 and 3, the baffle plates 2 are arc-shaped, the baffle plates 2 adjacent to each other up and down are fixedly connected together, the arc-shaped sieve plates 1 adjacent to each other up and down and the corresponding baffle plates 2 form a sieving cavity with left and right openings, the sieving cavity improves the sealing performance in the sieving process, the device can reduce the occurrence of dust overflow and particle splash in the screening process, an upper cover plate 11 is arranged on the arc-shaped screen plate 1 at the top, a feed inlet is arranged on the upper cover plate 11, a guide blanking port 12 is arranged below the arc-shaped screen plate 1 at the bottom, a discharge port 4 corresponds to an opening, the discharge port 4 comprises a butt joint guide bottom plate 41 and side plates 42 corresponding to the front and the back, the butt joint guide bottom plate 41 is in butt joint with the corresponding arc-shaped sieve plate 1, one side of the butt joint guide bottom plate 41 far away from the arc-shaped sieve plate 1 inclines downwards, during the screening process, the scraped ore can smoothly slide into the corresponding storage area by the butt guide bottom plate 41 during the overflow process.

Referring to fig. 3, 4 and 9, the scraping plate 5 is provided with a through hole 13, the through hole 13 on the scraping plate 5 is the same as the screening hole on the corresponding arc-shaped screen plate 1, in the scraping process, the hung and scraped ore can be further screened, the uniformity of the scraped ore is ensured, the active components 14 are arranged on the left and right sides of the symmetrical scraping plate 5, each active component 14 comprises a radial connecting rod 141, the radial connecting rods 141 are fixedly connected to the adapter 7, a total supporting column 142 is connected to the radial connecting rods 141, a plurality of L-shaped deflector rods 143 are connected to the left and right sides of the total supporting column 142, the plurality of L-shaped deflector rods 143 are uniformly distributed from front to back, and the plurality of L-shaped deflector rods 143 on the left and right sides are distributed in a staggered manner, as shown in fig. 4, in the scraping process, the radial connecting rods 141 drive the L-shaped deflector rods 143 thereon to reciprocally stir the ore on the corresponding arc-shaped screen plate 1 through the total supporting column 142, improve the activity of the ore, and further increase the screening speed and the screening effect.

Referring to fig. 2 and 7, the arc-shaped rack segments 9 are distributed along the moving track of the gear, while the arc-shaped rack segments 9 are distributed in a left-right symmetrical shape, the arc-shaped rack section 9 is connected with the fixed frame 3 in a front-back limiting sliding manner, the fixed frame 3 is provided with an expansion piece 15, the expansion piece 15 is used for controlling the arc-shaped rack section 9 to slide back and forth, the expansion piece 15 comprises an electric telescopic rod and a connecting plate, the arc-shaped rack sections 9 are all connected with the connecting plate, the electric telescopic rod synchronously drives the arc-shaped rack sections 9 to slide through the connecting plate, when the screening is stopped, the scraping plates 5 can continuously swing, when any one scraping plate 5 is attached to the upper surface of the corresponding arc-shaped screen plate 1, the electric telescopic rod drives the arc-shaped rack section 9 to leave the current position through the connecting plate, and then the ores on the arc-shaped sieve plate 1 can be scraped away and conveyed to a corresponding storage area along with the reciprocating swing of the scraping plate 5.

Referring to fig. 4 and 5, the top of the scraping plate 5 is provided with a rotating roller 16, ejector members 17 are uniformly arranged on the rotating roller 16, the ejector members 17 correspond to sieve pores on the corresponding arc-shaped sieve plate 1 above the rotating roller 16, when the scraping plate 5 is attached to the upper surface of the corresponding arc-shaped sieve plate 1 after screening is stopped, the corresponding rotating roller 16 on the scraping plate approaches to the lower surface of the arc-shaped sieve plate 1 above, at this time, the ejector members 17 on the rotating roller 16 can be inserted into the corresponding sieve pores along with the swing of the scraping plate 5, so that ores blocked in the sieve pores can be ejected, the influence of the blockage of the sieve pores on next screening is avoided, and the long-term use stability of the invention is effectively improved, wherein the ejector members 17 can be conical blocks.

Referring to fig. 3 and 4, the adaptor 7 is connected with the auxiliary stabilizing member 18, the auxiliary stabilizing member 18 includes an X-shaped connecting seat 181, the X-shaped connecting seat 181 is rotatably connected to the adaptor 7, and four end points of the X-shaped connecting seat 181 are fixedly connected with limiting columns 182, the limiting columns 182 are symmetric in pairs, the symmetric limiting columns 182 are respectively located at the left and right sides of the corresponding scraping plate 5, the X-shaped connecting seat 181 is sleeved on the adjusting screw 8 and only slides along the axial direction of the adjusting screw 8, when the adjusting screw 8 drives the corresponding scraping plate 5 to rotate, the X-shaped connecting seat 181 synchronously rotates along with the adjusting screw, as shown in fig. 4, the limiting columns 182 thereon are used for limiting the corresponding scraping plate 5, and the stability of the scraping plate 5 in the scraping process is improved.

Referring to fig. 1 and fig. 6, a driving mechanism 10 for driving the arc-shaped screen deck 1 to move back and forth is further disposed on the fixing frame 3, the driving mechanism 10 includes connecting plates 101, limiting frames 102, eccentric wheels 103 and a general driving shaft 104, the general driving shaft 104 is vertically and rotatably connected to the fixing frame 3, the connecting plates 101 correspond to the arc-shaped screen decks 1 one by one, the connecting plates 101 are slidably connected to the fixing frame 3 back and forth, the connecting plates 101 are fixedly connected to the corresponding arc-shaped screen decks 1, the limiting frames 102 are respectively and fixedly connected to the connecting plates 101, the eccentric wheels 103 are fixedly sleeved on the general driving shaft 104, the eccentric wheels 103 correspond to the limiting frames 102 one by one, and the eccentric wheels 103 are located in the limiting frames 102, during the screening process, the general driving shaft 104 is rotated, the general driving shaft 104 synchronously drives the eccentric wheels 103 to rotate, the eccentric wheels 103 drive the limiting frames 102 to move back and forth in the rotating process, and forth reciprocating motion of the corresponding arc-shaped screen decks 1 is driven by the connecting plates 101, wherein, through the setting to eccentric wheel 103 initial position, reverse reciprocating motion is made to adjacent arc sieve 1 about steerable, improves the variety of ore atress direction among the screening process, and then improves the activeness of screening.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a multistage screening plant after ore crushing which characterized in that: comprises a plurality of arc-shaped sieve plates (1), the arc-shaped sieve plates (1) are distributed from top to bottom, the circle centers of the arc-shaped sieve plates (1) distributed from top to bottom are the same, the aperture of the sieving holes on the arc-shaped sieve plates (1) is sequentially reduced from top to bottom, the front side and the rear side of each arc-shaped sieve plate (1) are respectively provided with a baffle (2), the front end part and the rear end part of each arc-shaped sieve plate (1) are respectively inserted and connected on the corresponding baffle (2) in a sliding way, the baffle (2) is connected with a fixed frame (3), the baffle (2) and the corresponding arc-shaped sieve plates (1) form an arc-groove-shaped sieving area, the left side and the right side of the sieving area are respectively connected with a discharging port (4), scraping plates (5) are symmetrically arranged in the sieving area, the scraping plates (5) do reciprocating swing motion in the sieving area, and the scraping plates (5) are discontinuously changed in the inclination state in the reciprocating swing process so as to control the distance between the scraping plates and the corresponding arc-shaped sieve plates (1), the fixed frame (3) is connected with a drive control assembly, the drive control assembly is used for controlling the movement of the scraping plate (5) and the state change in the movement, the drive control assembly comprises a drive shaft (6), the drive shaft (6) is connected with a changeover part (7), the changeover part (7) is provided with an adjusting screw rod (8) in a threaded insertion manner, the scraping plate (5) is rotationally connected to the changeover part (7) through a connecting shaft, the scraping plate (5) is fixedly connected with the connecting shaft, the connecting shaft is rotationally connected with the changeover part (7), the adjusting screw rod (8) is slidably inserted on the connecting shaft, the axes of the two coincide, the adjusting screw rod (8) only slides along the axial direction of the connecting shaft, one end of the adjusting screw rod (8) far away from the scraping plate (5) is fixedly connected with a gear, an arc-shaped rack section (9) which is movably meshed with the gear is arranged at a fixed point on the fixed frame (3), and the fixed frame (3) is also provided with a driving mechanism (10) for driving the arc-shaped sieve plate (1) to move back and forth.

2. A post-ore-comminution multi-stage screening apparatus as claimed in claim 1 in which: the baffle plates (2) are arc-shaped, the baffle plates (2) which are adjacent up and down are fixedly connected together, the arc-shaped sieve plates (1) which are adjacent up and down and the corresponding baffle plates (2) in the front and the back form a sieving cavity with an opening at the left and the right, wherein, an upper cover plate (11) is arranged on the arc-shaped sieve plate (1) positioned at the top, a feed inlet is arranged on the upper cover plate (11), a guide blanking port (12) is arranged below the arc-shaped sieve plate (1) positioned at the bottom, a discharge port (4) corresponds to the opening, the discharge port (4) comprises a butt joint guide bottom plate (41) and side plates (42) corresponding to the front and the back, the butt joint guide base plate (41) is in butt joint with the corresponding arc-shaped sieve plate (1), one side, far away from the arc-shaped sieve plate (1), of the butt joint guide base plate (41) inclines downwards, the adaptor (7) is in a circular ring shape, and the adaptor (7) is rotatably embedded on the corresponding baffle (2).

3. A post-ore-comminution multi-stage screening apparatus as claimed in claim 2 in which: scrape and seted up through-hole (13) on flitch (5), it is the same with the screening hole on corresponding arc sieve board (1) to scrape through-hole (13) on flitch (5), the left and right sides of scraping flitch (5) of symmetry all is provided with flourishing subassembly (14), flourishing subassembly (14) include radial connecting rod (141), radial connecting rod (141) fixed connection is on adaptor (7), be connected with total support column (142) on radial connecting rod (141), the left and right sides on total support column (142) all is connected with a plurality of L shape driving lever (143), a plurality of L shape driving lever (143) are by preceding back evenly distributed, and a plurality of L shape driving lever (143) of the left and right sides distribute that staggers.

4. A post-ore-comminution multi-stage screening apparatus as claimed in claim 1 in which: arc rack section (9) distribute along the removal orbit of gear, arc rack section (9) are bilateral symmetry form simultaneously and distribute, and spacing sliding connection is provided with extensible member (15) on mount (3) around arc rack section (9) on mount (3), and extensible member (15) are used for controlling the front and back slip of arc rack section (9).

5. A post-ore-comminution multi-stage screening apparatus as claimed in claim 1, wherein: the top of the scraping plate (5) is provided with a rotating roller (16), the rotating roller (16) is evenly provided with ejection pieces (17), and the ejection pieces (17) correspond to sieve holes on the corresponding arc-shaped sieve plate (1) above the rotating roller (16).

6. A post-ore-comminution multi-stage screening apparatus as claimed in claim 1 in which: be connected with auxiliary stabilizing piece (18) on adaptor (7), auxiliary stabilizing piece (18) are including X shape connecting seat (181), X shape connecting seat (181) rotate to be connected on adaptor (7), and four extreme points department equal fixedly connected with spacing post (182) of X shape connecting seat (181), spacing post (182) two bisymmetry, and spacing post (182) of symmetry are located the corresponding left and right sides of scraping flitch (5) respectively, X shape connecting seat (181) cup joint on adjusting screw (8) and only along adjusting screw (8) axial slip.

7. A post-ore-comminution multi-stage screening apparatus as claimed in claim 1, wherein: actuating mechanism (10) are including linking board (101), spacing frame (102), eccentric wheel (103) and always drive axle (104), always drive axle (104) vertical rotation and connect on mount (3), link board (101) and arc sieve (1) one-to-one, sliding connection is just linked board (101) fixed connection on corresponding arc sieve (1) on mount (3) around linking board (101), spacing frame (102) fixed connection is on linking board (101) respectively, eccentric wheel (103) are fixed cup joints on always driving axle (104), eccentric wheel (103) and spacing frame (102) one-to-one, and eccentric wheel (103) are located spacing frame (102).

Images