Screening and crushing device for ore pretreatment

Abstract

The invention relates to the technical field of ore screening, and discloses a screening and crushing device for ore pretreatment, which comprises a screening frame and further comprises a screening unit arranged on the screening frame, and the screening unit comprises a roller screen part and a vibration screen part which are arranged on the screening frame. The roller screen component comprises a plurality of rolling rods arranged on the screening frame, a plurality of screening wheels arranged on the rolling rods, synchronous wheels arranged at one ends of the rolling rods, synchronous belts arranged among the synchronous wheels and a bearing plate arranged on the side wall of the screening frame. According to the vibration screening machine, first-stage screening of the vibration screening machine is changed into rolling screening, so that vibration is avoided while silt in large-size ore and small-particle ore are screened, collision between the large-size ore and the vibration screening machine is avoided, the service life of the vibration screening machine is effectively prolonged, noise is reduced, meanwhile, the vibration screening part is arranged, and the vibration screening effect is improved. And a worker can adjust the vibration amplitude of the vibration screen more conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of ore screening, and in particular to a screening and crushing device for ore pretreatment. Background Art

[0002] Screening is an important step in the ore pretreatment process. It is mainly used to divide the ore into different particle sizes according to the size of the particles. When the ore is crushed, different particle sizes correspond to different crusher parameters. If ores of different sizes are crushed uniformly, the machine may get stuck or the crushing may be insufficient, affecting the subsequent production efficiency. Therefore, screening can remove particles that are too large or too small, improve the efficiency and effect of the subsequent mineral processing process, and separate the mud and sand mixed in the ore from the ore, which is convenient for the subsequent ore crushing process.

[0003] In the prior art, a vibrating screen is usually used to screen the ore, but the following problems still exist. The existing vibrating screen is usually set as a multi-level structure to separate ores of different particle sizes respectively. Its principle is to accelerate the screening of the ore through continuous vibration. However, when the vibrating screen is used to screen larger ores, due to the large mass and volume of the ore, the vibrating screen constantly collides with the large volume of ore, generating a large noise while damaging the screen, reducing the service life of the screen. At the same time, the energy consumption is large when vibrating and screening large volumes of ore, and the current vibrating screen that can adjust the vibration amplitude (such as an electromagnetic vibrating screen or a variable frequency vibrating screen) is expensive and difficult to maintain. Summary of the invention

[0004] In view of the problems that the existing vibrating screen machine produces loud noise when vibrating and screening large volumes of ore, causes serious damage to the screen, consumes a lot of energy, and the existing vibrating screen machine with adjustable vibration amplitude is expensive and difficult to maintain, a screening and crushing device for ore pretreatment is proposed.

[0005] The present application provides a screening and crushing device for ore pretreatment, the purpose of which is: by changing the first-level screening of the vibrating screen machine into rolling screening, no vibration will occur while screening the mud and sand in the large volume of ore and the small particle ore, thereby avoiding the collision between the large volume of ore and the vibrating screen machine, effectively improving the service life of the vibrating screen machine and reducing noise. At the same time, a vibrating screen component is provided, so that the staff can more conveniently adjust the vibration amplitude of the vibrating screen, and the structure is simple and the cost is low.

[0006] The technical solution of the present invention is: a screening and crushing device for ore pretreatment, comprising a screening frame, and a screening unit arranged on the screening frame, wherein the screening unit comprises a rolling screen component and a vibrating screen component arranged on the screening frame;

[0007] The rolling screen component includes a plurality of rolling rods arranged on the screening frame, a plurality of screening wheels arranged on each rolling rod, a synchronous wheel arranged at one end of the rolling rod, a synchronous belt arranged between the plurality of synchronous wheels, a supporting plate arranged on the side wall of the screening frame, a driving motor arranged on the supporting plate, a main rotating wheel arranged on the driving shaft of the driving motor, a diverter plate arranged at one end of the screening frame, transmission components are installed at both ends of the interior of the screening frame, and a material conveying component is installed at the upper end of the screening frame;

[0008] One end of the rolling rod located in the middle position is fixedly connected to the driving end of the driving motor, and multiple screening wheels located on the same rolling rod are fixedly installed at equal distances, and the installation distance is equal to the width of a single screening wheel. The multiple screening wheels on two adjacent rolling rods are fixedly installed in an staggered manner.

[0009] Furthermore, the transmission assembly includes two transmission rods arranged on both sides of the inner wall of the screening frame, a transmission belt arranged on the two transmission rods, a support plate arranged on the side wall of the screening frame, a transmission motor arranged on the support plate, a main rotating wheel 2 arranged at the driving end of the transmission motor, one end of the transmission rod located on the inner side of the screening frame is fixedly connected to the driving end of the transmission motor, a collecting box is arranged on the bottom wall of the screening frame, and one end of the transmission belt is located directly above the collecting box.

[0010] Furthermore, the transmission assembly includes two transmission rods arranged on both sides of the inner wall of the screening frame, a transmission belt arranged on the two transmission rods, a support plate arranged on the side wall of the screening frame, a transmission motor arranged on the support plate, a main rotating wheel 2 arranged at the driving end of the transmission motor, one end of the transmission rod located on the inner side of the screening frame is fixedly connected to the driving end of the transmission motor, a collecting box is arranged on the bottom wall of the screening frame, and one end of the transmission belt is located directly above the collecting box.

[0011] Furthermore, the feeding assembly includes a feed box arranged at the upper end of the screening frame, a conical sleeve arranged at the upper end of the feed box, an inclined block arranged on the bottom wall of the feed box, a plurality of balls arranged on the inclined surface of the inclined block, and a feed port opened on the side wall of the feed box.

[0012] Furthermore, the vibrating screen component includes a mounting frame arranged on the inner wall of the screening frame, a plurality of vibration springs arranged on the mounting frame, a vibrating screen plate arranged on the plurality of vibration springs, a vertical vibration component installed between the vibrating screen plate and the main rotating wheel one, and a horizontal vibration component installed between the vibrating screen plate and the main rotating wheel two.

[0013] Furthermore, the vertical vibration assembly includes a bending plate arranged on the side wall of the supporting plate, an axle rod arranged on the bending plate, a mating wheel arranged on the axle rod, a linkage belt arranged between the mating wheel and a main rotating wheel, a driving wheel arranged at the axis center of the mating wheel, a mounting groove opened on the driving wheel, a threaded rod arranged on the mounting groove, a threaded block threadedly arranged on the threaded rod, a convex rod arranged on the threaded block, a convex rod two arranged on the side wall of the vibration screen plate, a pull rod arranged between the convex rods one and two, and an adjusting motor one arranged on the mating wheel, and the driving end of the adjusting motor one is fixedly connected to the upper end of the threaded rod one.

[0014] Furthermore, the transverse vibration assembly includes a driven wheel arranged on the side wall of the screening frame, a linkage belt 2 arranged between the driven wheel and the main rotating wheel 2, a connecting wheel arranged at the axis of the driven wheel, a square groove opened on the connecting wheel, two threaded rods arranged in the square groove, two adjusting motors arranged on the connecting wheel, an adjusting block threadedly arranged on the threaded rod 2, a short rod 1 arranged on the adjusting block, a short rod 2 arranged on the side wall of the vibrating screen plate, and a connecting rod arranged between the short rod 1 and the short rod 2.

[0015] Furthermore, a second diverter plate is fixedly mounted on one end of the screening frame, and the opening direction of the second diverter plate is opposite to that of the first diverter plate.

[0016] Beneficial effects of the present invention:

[0017] 1. By setting up multiple rolling rods and multiple staggered screening wheels, the device can screen the mud and small particles in the large volume of ore through the gaps between the multiple screening wheels when screening the large volume of ore, effectively avoiding the collision between the large volume of ore and the vibrating screen, reducing the noise of the vibrating screen during operation, and increasing the service life of the vibrating screen.

[0018] 2. By setting up the vibrating screen component, the vibration amplitude of the vibrating screen plate can be quickly adjusted when separating small-particle ore from mud and sand. The structure is simple and the cost is low, which is convenient for subsequent maintenance by the staff and effectively improves the operating cost of the enterprise when screening the ore.

[0019] 3. By setting a transmission component at the lower end of the vibrating screen frame, the screened mud and sand can be transported to the collection box through the transmission belt for collection, which is convenient for the staff to carry out subsequent processing of the collected mud and sand. At the same time, the diverter plate 1 and the diverter plate 2 can collect ores of different volumes after screening separately, which is convenient for the staff to carry and subsequent crushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure from a first viewing angle of the present invention;

[0021] Figure 2 is a schematic diagram of a second viewing angle stereoscopic structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 Schematic diagram of partial cross-section structure;

[0023] Figure 4 For the present invention Figure 1 Schematic diagram of the plan viewed from above;

[0024] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0025] Figure 6 It is a schematic structural diagram of the vibrating screen component of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the vertical vibration assembly of the present invention;

[0027] Figure 8 It is a schematic diagram of the planar structure of the driving wheel of the present invention;

[0028] Fig. 9 is a schematic diagram of the structure of the transverse vibration assembly of the present invention;

[0029] Fig.10 It is a schematic diagram of the connecting wheel structure of the present invention.

[0030] In the figure:

[0031] 1. Screening frame; 2. Rolling rod; 3. Screening wheel; 4. Synchronous wheel; 5. Synchronous belt; 6. Support plate; 7. Driving motor; 8. Main rotating wheel 1; 9. Diverter plate 1; 10. Transmission rod; 11. Transmission belt; 12. Support plate; 13. Transmission motor; 14. Main rotating wheel 2; 15. Collection box; 16. Feed box; 17. Conical sleeve; 18. Inclined block; 19. Mounting frame; 20. Vibration spring; 21. Vibrating screen plate; 22. Bending Plate; 23, shaft; 24, matching wheel; 25, linkage belt one; 26, driving wheel; 27, threaded rod one; 28, threaded block; 29, convex rod one; 30, convex rod two; 31, pull rod; 32, adjusting motor one; 33, driven wheel; 34, linkage belt two; 35, connecting wheel; 36, threaded rod two; 37, adjusting motor two; 38, adjusting block; 39, short rod one; 40, short rod two; 41, connecting rod; 42, diverter plate two. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] Example 1, reference Figure 1 - Figure 5 , which is the first embodiment of the present invention, provides a screening and crushing device for ore pretreatment, including a screening frame 1, and also includes a screening unit installed on the screening frame 1, the screening unit includes a rolling screen component and a vibrating screen component installed on the screening frame 1; the rolling screen component includes a plurality of rolling rods 2 rotatably installed on the screening frame 1, a plurality of screening wheels 3 fixedly installed on each rolling rod 2, a synchronous wheel 4 fixedly installed at one end of the rolling rod 2, a synchronous belt 5 sleeved and installed between the plurality of synchronous wheels 4, a supporting plate 6 fixedly installed on the side wall of the screening frame 1, a driving motor 7 fixedly installed on the supporting plate 6, a main rotating wheel 8 fixedly installed on the driving shaft of the driving motor 7, a diverter plate 9 fixedly installed at one end of the screening frame 1, transmission components are installed at both ends of the interior of the screening frame 1, and a feeding component is installed at the upper end of the screening frame 1.

[0034] One end of the rolling rod 2 located in the middle position is fixedly connected to the driving end of the driving motor 7, and multiple screening wheels 3 located on the same rolling rod 2 are fixedly installed at equal distances, and the installation distance is equal to the width of a single screening wheel 3. The multiple screening wheels 3 on two adjacent rolling rods 2 are fixedly installed in an staggered manner.

[0035] Reference Figure 2 and Figure 3 The feeding assembly includes a feed box 16 fixedly mounted on the upper end of the screening frame 1, a conical sleeve 17 fixedly mounted on the upper end of the feed box 16, an inclined block 18 fixedly mounted on the bottom wall of the feed box 16, a plurality of balls (not shown) rotatably mounted on the inclined surface of the inclined block 18, and a feed port opened on the side wall of the feed box 16.

[0036] Specifically, the feed box 16 is used to input the ore to be screened to the rolling rod 2, and the inclined block 18 and the ball bearing at the bottom thereof assist the ore to enter the top of the rolling rod 2. The rolling screen component is used to replace the conventional vibrating screen component. When screening a large volume of ore, the rolling rod 2 and the plurality of screening wheels 3 rotating in the same direction make the large volume of ore move above the rolling rod 2, and during the movement, the small volume of ore and the sediment in the large volume of ore pass through the gaps between the screening wheels 3 (refer to Figure 5 ) falls to the bottom for secondary screening, while the ore with a volume larger than the gap of the screening wheel 3 moves to the diverter plate 9 for collection. The advantage of using the rolling screen method is that no vibration occurs when screening large-volume ore, thereby avoiding the collision between the large-volume ore and the screen plate. While completing the screening of large-volume ore, the noise during the operation of the device is reduced, and the service life of the device is increased. The staff can control the gap of the screening wheel 3 by adjusting the radius of the rolling rod 2 and the screening wheel 3, thereby controlling the screening of ores of different sizes.

[0037] During use, the staff puts the ore to be screened into the feed box 16 through an excavator. The screened ore enters the feed box 16 and slides onto the rolling rod 2. The rotating rolling rod 2 drives the ore to move, while the small-volume ore and mud in the large-volume ore fall under the rolling rod 2 through the gap of the screening wheel 3 under the action of gravity for secondary screening. The large-volume ore moves to the diverter plate 9 under the action of the rotating rolling rod 2 for collection.

[0038] Example 2, reference Figure 3 - Figure 4 as well as Figure 6 - Fig.10 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the vibrating screen component includes a mounting frame 19 fixedly mounted on the inner wall of the screening frame 1, a plurality of vibration springs 20 fixedly mounted on the mounting frame 19, a vibrating screen plate 21 fixedly mounted on the plurality of vibration springs 20, a vertical vibration component is installed between the vibrating screen plate 21 and the main rotating wheel 1 8, and a horizontal vibration component is installed between the vibrating screen plate 21 and the main rotating wheel 2 14. The vertical vibration assembly includes a bending plate 22 fixedly mounted on the side wall of the supporting plate 6, an axle rod 23 fixedly mounted on the bending plate 22, a matching wheel 24 rotatably mounted on the axle rod 23, a linkage belt 25 fixedly mounted between the matching wheel 24 and the main rotating wheel 8, a driving wheel 26 fixedly mounted at the axis of the matching wheel 24, a mounting groove provided on the driving wheel 26, a threaded rod 27 rotatably mounted on the mounting groove, a threaded block 28 threadedly mounted on the threaded rod 27, a convex rod 29 fixedly mounted on the threaded block 28, a convex rod 30 fixedly mounted on the side wall of the vibrating screen plate 21, a pull rod 31 rotatably sleeved between the convex rod 29 and the convex rod 30, and an adjusting motor 32 fixedly mounted on the matching wheel 24, wherein the driving end of the adjusting motor 32 is fixedly connected to the upper end of the threaded rod 27. The transverse vibration assembly includes a driven wheel 33 rotatably mounted on the side wall of the screening frame 1, a linkage belt 2 34 sleeved between the driven wheel 33 and the main rotating wheel 2 14, a connecting wheel 35 fixedly mounted at the axis of the driven wheel 33, a square groove provided on the connecting wheel 35, a threaded rod 2 36 rotatably mounted in the square groove, an adjustment motor 2 37 fixedly mounted on the connecting wheel 35, an adjustment block 38 threadedly mounted on the threaded rod 2 36, a short rod 1 39 fixedly mounted on the adjustment block 38, a short rod 2 40 fixedly mounted on the side wall of the vibrating screen plate 21, and a connecting rod 41 rotatably sleeved between the short rod 1 39 and the short rod 2 40. A diverter plate 2 42 is fixedly mounted at one end of the screening frame 1, and the opening direction of the diverter plate 2 42 is opposite to that of the diverter plate 1 9, a support plate 12 fixedly mounted on the side wall of the screening frame 1, a transmission motor 13 fixedly mounted on the support plate 12, and a main rotating wheel 2 14 arranged at the driving end of the transmission motor 13.

[0039] Specifically, the function of the vibrating screen component is to separate small-volume ore from mud and sand through conventional vibrating screen. Because the mass of small-volume ore is small, no loud noise will occur when it collides with the vibrating screen plate 21 during vibration, and the impact force of the collision on the vibrating screen plate 21 is small, and the separation effect of mud and sand is better. By setting the vertical vibration component, the driving motor 7 can drive the vibrating screen plate 21 to reciprocate continuously in the vertical direction while driving the multiple rolling rods 2 to rotate, thereby realizing the continuous vibration of the vibrating screen plate 21 in the vertical direction. By setting the horizontal vibration component, the transmission motor 13 can drive the vibrating screen plate 21 to reciprocate continuously in the horizontal direction while driving the transmission rod 10 to rotate, thereby realizing the continuous vibration of the vibrating screen plate 21 in the horizontal direction. The two cooperate with each other, so that the vibrating screen plate 21 reciprocates in different directions, thereby improving the separation efficiency of mud and sand.

[0040] At the same time, threaded rod 1 27 and threaded rod 2 36 are arranged on the driving wheel 26 and the connecting wheel 35, so that the staff can control the positions of the protruding rod 1 29 and the short rod 1 39 respectively by controlling the adjusting motor 1 32 and the adjusting motor 2 37. Because the amplitude of the vibration of the vibrating screen plate 21 in the vertical direction is related to the distance between the protruding rod 1 29 and the center of the driving wheel 26, when the protruding rod 1 29 approaches the center of the driving wheel 26 under the rotation of the threaded rod 1 27, the shorter the stroke of the protruding rod 1 29 in the vertical direction driven by the driving wheel 26 rotation (the maximum stroke of the protruding rod 1 29 in the vertical direction is equal to twice the distance between the protruding rod 1 29 and the center of the driving wheel 26), it can be known that when the protruding rod 1 29 is away from the center of the driving wheel 26, the stroke of the protruding rod 1 29 becomes larger when the driving wheel 26 rotates, thereby increasing the vibration amplitude of the vibrating screen plate 21. The working principle of the horizontal vibration component is the same as that of the vertical vibration component, which will not be explained again.

[0041] During use, when small volumes of ore and sediment fall onto the top of the vibrating screen plate 21, the main rotating wheel 18 on the driving end of the driving motor 7 rotates to drive the matching wheel 24 to rotate, and then drives the driving wheel 26 to rotate. When the driving wheel 26 rotates, it drives the convex rod 1 29 to rotate. The convex rod 1 29 continuously rotates on the driving wheel 26 with the point of the driving wheel 26 as the center of the circle, so that the convex rod 1 29 continuously drives the convex rod 2 30 to reciprocate in the vertical direction through the pull rod 31 during the rotation process, thereby driving the vibrating screen plate 21 to rotate in the vertical direction. Similarly, when the transmission motor 13 rotates, the main rotating wheel 2 14 rotates to drive the connecting wheel 35 to rotate, and then drives the short rod 1 39 to rotate with the connecting wheel 35 as the center, and then drives the short rod 2 40 to reciprocate in the vertical direction through the connecting rod 41, and then drives the vibrating screen plate 21 to reciprocate synchronously. The vibrating screen plate 21 continuously reciprocates in the vertical and horizontal directions to vibrate and screen the small volume of ore on the vibrating screen plate 21 and separate the mud and sand inside it. At the same time, by controlling the adjustment motor 1 32 and the adjustment motor 2 37 to drive the corresponding threaded rod 1 27 and the threaded rod 2 36 to rotate, and then control the distance between the convex rod 1 29 and the short rod 1 39, and then quickly control the amplitude of the vibrating screen plate 21, and the adjustment structure is simple and fast, effectively reducing the operating cost and maintenance cost of the device.

[0042] The remaining structures are the same as those of Example 1.

[0043] Example 3, reference Figure 2 - Figure 3 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the transmission component includes two transmission rods 10 rotatably mounted on both sides of the inner wall of the screening frame 1, a transmission belt 11 sleeved on the two transmission rods 10, a support plate 12 fixedly mounted on the side wall of the screening frame 1, a transmission motor 13 fixedly mounted on the support plate 12, a main rotating wheel 14 fixedly mounted on the driving end of the transmission motor 13, one end of the transmission rod 10 located on the inner side of the screening frame 1 is fixedly connected to the driving end of the transmission motor 13, a collecting box 15 fixedly mounted on the bottom wall of the screening frame 1, and one end of the transmission belt 11 is located directly above the collecting box 15.

[0044] Specifically, the transmission component is used to transport the screened sediment to the collection box 15, so as to facilitate the subsequent use and treatment of the collected sediment by the staff, and to prevent the screened sediment from being scattered underground and affecting the surrounding environment.

[0045] During use, the silt sieved by the vibrating screen plate 21 falls onto the top of the transmission belt 11 under the action of gravity. The driving end of the transmission motor 13 drives the corresponding transmission rod 10 to rotate, thereby driving the transmission belt 11 to rotate. When the transmission belt 11 rotates, the silt above is driven to move to the top of the collection box 15 and falls into the collection box 15, completing the collection of the silt.

[0046] The remaining structure is the same as that of Example 2.

[0047] Based on Examples 1-3, the working principle of the present invention is as follows: the worker puts the ore to be screened into the feed box 16 through an excavator, and the screened ore enters the feed box 16 and slides onto the rolling rod 2. While the rotating rolling rod 2 drives the ore to move, the small-volume ore and the mud and sand in the large-volume ore fall under the rolling rod 2 through the gap of the screening wheel 3 under the action of gravity for secondary screening, and the large-volume ore moves to the diverter plate 9 under the action of the rotating rolling rod 2 for collection.

[0048] When small-volume ore and sediment fall onto the top of the vibrating screen plate 21, the main rotating wheel 18 on the driving end of the driving motor 7 rotates to drive the matching wheel 24 to rotate, and then drives the driving wheel 26 to rotate. When the driving wheel 26 rotates, it drives the convex rod 1 29 to rotate. The convex rod 1 29 rotates continuously on the driving wheel 26 with the point of the driving wheel 26 as the center of the circle, so that the convex rod 1 29 continuously drives the convex rod 2 30 to reciprocate in the vertical direction through the pull rod 31 during the rotation process, thereby driving the vibrating screen plate 21 in the vertical direction. Continuously reciprocating motion, similarly, when the transmission motor 13 rotates, the main rotating wheel 2 14 rotates to drive the connecting wheel 35 to rotate, and then drives the short rod 1 39 to rotate with the connecting wheel 35 point as the center, and then drives the short rod 2 40 to reciprocate in the vertical direction through the connecting rod 41, and then drives the vibrating screen plate 21 to reciprocate synchronously, and the vibrating screen plate 21 continuously reciprocates in the vertical and horizontal directions to achieve vibrating and screening of small-volume ore on the vibrating screen plate 21, and to separate the mud and sand inside it. At the same time, by controlling the adjustment motor 1 32 and the adjustment motor 2 37 to drive the corresponding threaded rod 1 27 and the threaded rod 2 36 to rotate, and then control the distance between the convex rod 1 29 and the short rod 1 39, and then quickly control the amplitude of the vibrating screen plate 21.

[0049] The silt sieved by the vibrating screen plate 21 falls onto the top of the transmission belt 11 under the action of gravity. The driving end of the transmission motor 13 drives the corresponding transmission rod 10 to rotate, thereby driving the transmission belt 11 to rotate. When the transmission belt 11 rotates, the silt above is driven to move to the top of the collection box 15 and falls into the collection box 15, completing the collection of the silt.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A screening and crushing device for ore pretreatment, comprising a screening frame (1), characterized in that: It also comprises a screening unit arranged on the screening frame (1), wherein the screening unit comprises a rolling screening component and a vibrating screening component arranged on the screening frame (1); The rolling screen component comprises a plurality of rolling rods (2) arranged on the screening frame (1), a plurality of screening wheels (3) arranged on each rolling rod (2), a synchronous wheel (4) arranged at one end of the rolling rod (2), a synchronous belt (5) arranged between the plurality of synchronous wheels (4), a supporting plate (6) arranged on the side wall of the screening frame (1), a driving motor (7) arranged on the supporting plate (6), a main rotating wheel (8) arranged on the driving shaft of the driving motor (7), and a diverter plate (9) arranged at one end of the screening frame (1), transmission components are installed at both ends of the interior of the screening frame (1), and a material conveying component is installed at the upper end of the screening frame (1); One end of the rolling rod (2) located in the middle position is fixedly connected to the driving end of the driving motor (7); a plurality of screening wheels (3) located on the same rolling rod (2) are fixedly installed at equal distances, and the installation distance is equal to the width of a single screening wheel (3); and a plurality of screening wheels (3) on two adjacent rolling rods (2) are fixedly installed in an alternating manner.

2. A screening and crushing device for ore pretreatment according to claim 1, characterized in that: The transmission assembly comprises two transmission rods (10) arranged on both sides of the inner wall of the screening frame (1), a transmission belt (11) arranged on the two transmission rods (10), a support plate (12) arranged on the side wall of the screening frame (1), a transmission motor (13) arranged on the support plate (12), a second main rotating wheel (14) arranged at the driving end of the transmission motor (13), one end of the transmission rod (10) located on the inner side of the screening frame (1) is fixedly connected to the driving end of the transmission motor (13), and a collection box (15) is arranged on the bottom wall of the screening frame (1), and one end of the transmission belt (11) is located directly above the collection box (15).

3. The screening and crushing device for ore pretreatment according to claim 1 is characterized in that: The feeding assembly comprises a feed box (16) arranged at the upper end of the screening frame (1), a conical sleeve (17) arranged at the upper end of the feed box (16), an inclined block (18) arranged on the bottom wall of the feed box (16), a plurality of balls arranged on the inclined surface of the inclined block (18), and a feed port opened on the side wall of the feed box (16).

4. A screening and crushing device for ore pretreatment according to claim 3, characterized in that: The vibrating screen component comprises a mounting frame (19) arranged on the inner wall of the screening frame (1), a plurality of vibration springs (20) arranged on the mounting frame (19), a vibrating screen plate (21) arranged on the plurality of vibration springs (20), a vertical vibration component being installed between the vibrating screen plate (21) and the first main rotating wheel (8), and a horizontal vibration component being installed between the vibrating screen plate (21) and the second main rotating wheel (14).

5. A screening and crushing device for ore pretreatment according to claim 4, characterized in that: The vertical vibration assembly comprises a bending plate (22) arranged on the side wall of the supporting plate (6), a shaft (23) arranged on the bending plate (22), a matching wheel (24) arranged on the shaft (23), a linkage belt (25) arranged between the matching wheel (24) and a main rotating wheel (8), a driving wheel (26) arranged at the axis of the matching wheel (24), a mounting groove provided on the driving wheel (26), and a threaded rod (25) arranged on the mounting groove. 7), a threaded block (28) threadedly arranged on a threaded rod (27), a protruding rod (29) arranged on the threaded block (28), a protruding rod (30) arranged on the side wall of the vibrating screen plate (21), a pull rod (31) arranged between the protruding rod (29) and the protruding rod (30), and an adjusting motor (32) arranged on a matching wheel (24), wherein the driving end of the adjusting motor (32) is fixedly connected to the upper end of the threaded rod (27).

6. A screening and crushing device for ore pretreatment according to claim 5, characterized in that: The transverse vibration assembly comprises a driven wheel (33) arranged on the side wall of the screening frame (1), a second linkage belt (34) arranged between the driven wheel (33) and the second main rotating wheel (14), a connecting wheel (35) arranged at the axis of the driven wheel (33), a square groove provided on the connecting wheel (35), a second threaded rod (36) arranged in the square groove, a second regulating motor (37) arranged on the connecting wheel (35), an regulating block (38) threadedly arranged on the second threaded rod (36), a first short rod (39) arranged on the regulating block (38), a second short rod (40) arranged on the side wall of the vibrating screen plate (21), and a connecting rod (41) arranged between the first short rod (39) and the second short rod (40).

7. A screening and crushing device for ore pretreatment according to claim 6, characterized in that: A second diverter plate (42) is fixedly mounted on one end of the screening frame (1), and the opening direction of the second diverter plate (42) is opposite to that of the first diverter plate (9).

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