Multi-stage screening device for emery production and operation method of multi-stage screening device

Abstract

The invention relates to the technical field of screening equipment, and discloses a multi-stage screening device for emery production and an operation method thereof.The device comprises an outer box body and a base fixedly installed at the bottom of the outer box body, a box door is hinged to one side of the front face of the outer box body, and a feeding cylinder is connected to the top of the outer box body; a screening assembly is arranged in the middle of the interior of the outer box body, and auxiliary assemblies are symmetrically arranged on the two sides of the interior of the outer box body. The screening assembly comprises a motor fixedly installed in the middle of the bottom of the base, the auxiliary assembly comprises a first synchronous belt wheel fixedly installed on the outer side of the lower portion of a rotating shaft, and second synchronous belt wheels are symmetrically and rotationally connected to the inner bottom face of the outer box body. And when the small corundum sand is located on the upper portion, the small corundum sand on the upper portion cannot be rapidly screened and fall off conveniently, and the screening efficiency and the screening effect are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of screening equipment, in particular to a multi-stage screening device for corundum sand production and an operating method thereof. Background Art

[0002] Corundum sand can grind the rough surface of any workpiece into a fine finish and is one of the most economical abrasives. This sharp and angular artificial abrasive has a hardness second only to diamond and is particularly suitable for use when there are strict requirements on iron pollution. Screening is required during the production and processing of corundum sand. Existing screening or multi-stage screening generally only improves the screening effect through horizontal shaking. When larger pieces of corundum sand are located at the bottom and smaller pieces of corundum sand are located at the top, the screening effect of the screen is poor at this time. However, it is still not convenient for the smaller pieces of corundum sand on the top to be quickly screened and dropped by only horizontal shaking.

[0003] For example, a multi-stage screening device for corundum powder with announcement number CN209680536U includes a bottom plate and a vertical plate fixedly connected to the bottom plate, and also includes a multi-stage screening device fixedly installed on the vertical plate, wherein the multi-stage screening device includes a first shaft sleeve fixedly connected to the vertical plate, a first fixed plate is fixedly connected to the side of the vertical plate close to the first shaft sleeve, a second shaft sleeve is fixedly connected to the top of the first fixed plate, a shaft rod is slidably connected to the first shaft sleeve and a screening box is fixedly installed at one end of the shaft rod, and a screening box cavity is provided in the screening box cavity. A screening net is fixedly connected to the bottom, and a reciprocating plate is fixedly connected to the other end of the shaft rod. A guide groove is provided on the reciprocating plate, which solves the problem that the traditional screening machine is a one-stage screening and cannot separate corundum micropowders of different particles, resulting in incomplete screening of the corundum micropowder. However, the device only screens by horizontal shaking. When larger pieces of corundum sand are located at the bottom and smaller pieces of corundum sand are located at the top, the screening effect of the horizontally sliding screen is still poor, which makes it inconvenient for the smaller pieces of corundum sand at the top to be quickly screened and dropped, reducing the screening efficiency and screening effect.

[0004] Therefore, a multi-stage screening device for corundum sand production and an operating method thereof are proposed to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide a multi-stage screening device for corundum sand production and an operating method thereof, so as to solve the problem that when screening is performed only by horizontal shaking, when larger pieces of corundum sand are located at the bottom and smaller pieces of corundum sand are located at the top, it is not convenient for the smaller pieces of corundum sand at the top to be quickly screened and dropped, thereby reducing the screening efficiency and screening effect.

[0006] To achieve the above object, the present invention provides the following technical solution: a multi-stage screening device for corundum sand production, comprising an outer box body and a base fixedly installed at the bottom of the outer box body, a box door is hinged on one side of the front of the outer box body, and a feed barrel is connected to the top of the outer box body; Also includes: A screening assembly is arranged in the middle of the outer box, auxiliary assemblies are symmetrically arranged on both sides of the inner part of the outer box, and a primary filter box, a secondary filter box and a collection box are sequentially installed in the inner part of the outer box from top to bottom; A circle of connecting cloth layer is fixedly connected to the top of the primary filter box, the top of the connecting cloth layer is adhered to the inner top surface of the outer box body, an upper filter plate is symmetrically fixedly installed on the bottom surface of the primary filter box, and a lower filter plate is fixedly installed on the bottom of the secondary filter box; The screening assembly comprises a motor fixedly mounted in the middle of the bottom of the base, the output end of the motor passes through the base and the outer box body and is fixedly connected to a rotating shaft, the top of the rotating shaft is fixedly connected to an extrusion block, the top of the extrusion block is arranged in a wave shape with concave and convex alternating, the inner bottom surface of the outer box body is symmetrically rotatably connected to side rods on both sides, the outer side of the side rod is sleeved with a sliding sleeve, and the same cross bar is fixedly connected between the two sliding sleeves; The bottom of the cross bar is fixedly connected with a contact rod, the outer side of the cross bar is symmetrically slidably connected with an adjustment sleeve, the outer side of the cross bar is sleeved with an auxiliary spring, the top of the adjustment sleeve is fixedly installed with a positioning plate, and an inner rod is fixedly connected between the two positioning plates; The auxiliary component includes a synchronous pulley 1 fixedly mounted on the outer side of the lower part of the rotating shaft, a synchronous pulley 2 is symmetrically rotated and connected to the inner bottom surface of the outer box body, a toothed belt is sleeved and installed between the synchronous pulley 1 and the synchronous pulleys 2 on both sides, a half gear is installed on the top of the synchronous pulley 2, a slave gear is fixedly connected to the outer side of the lower part of the side rod, and a torsion spring is sleeved on the lower part of the side rod; The half gear is meshed with the slave gear, a screw is fixedly installed on the top of the side rod by bolts, a threaded sleeve is sleeved on the outer side of the screw, a push block is fixedly connected to one side of the threaded sleeve, an inclined groove is provided on the side of the positioning plate close to the push block, and the two inclined grooves are symmetrically provided with the center.

[0007] Preferably, the rotating shaft is rotatably connected to the outer box body, a limit bearing is installed on the outer side of the side rod, the limit bearing is fixed on the inner side walls of the outer box body, and the sliding sleeve is slidably connected to the side rod.

[0008] By adopting the above technical solution, vertical and horizontal multi-directional movement of the primary filter box is achieved, the filtering effect of the upper filter plate is improved, and clogging is reduced.

[0009] Preferably, the contact rod is slidably connected to the recess of the extrusion block, the outer side of the cross bar is fixedly connected to a limit strip, the adjustment sleeve is slidably connected to the limit strip, the limit strip is laterally arranged, and there are no less than two limit strips.

[0010] By adopting the above technical solution, since the top of the extrusion block is arranged in a concave-convex wave shape, the contact rod is squeezed by the extrusion block and moves up and down, and the limit strip is used to limit the sliding of the adjustment sleeve.

[0011] Preferably, the auxiliary spring is located on a side of the adjustment sleeve close to the side rod, the auxiliary spring is slidably connected to the cross rod, one end of the auxiliary spring is fixedly connected to the sliding sleeve, and the other end of the auxiliary spring is fixedly connected to the adjustment sleeve, and the number of the auxiliary springs is the same as that of the adjustment sleeve.

[0012] By adopting the above technical solution, the auxiliary spring is used to assist the sliding and resetting of the adjusting sleeve, thereby facilitating the stable sliding of the adjusting sleeve.

[0013] Preferably, the top of the adjustment sleeve is fixedly connected with a connecting block, the top of the connecting block is fixedly connected with the bottom of the positioning plate, there are no less than two inner rods, the inner rods are located below the inner sides of the two positioning plates, and a baffle is fixedly connected to the middle of the top of the cross bar.

[0014] By adopting the above technical solution, the adjusting sleeve drives the positioning plate to move through the connecting block, and the positioning plate drives the primary filter box to move up and down, thereby facilitating the filtration of the corundum sand material inside the primary filter box through the upper filter plate.

[0015] Preferably, the two side rods are located outside the two synchronous pulleys, the half gear is fixedly connected to the synchronous pulley, and the half gear is located below the collection box.

[0016] By adopting the above technical solution, the synchronous pulley 1 drives the synchronous pulleys 2 on both sides to rotate through the toothed belt, and the synchronous pulley 2 drives the half gear to rotate, which is convenient for the reciprocating rotation of the gear.

[0017] Preferably, the torsion spring is slidably connected to the side rod, the top of the torsion spring is fixedly connected to the bottom of the gear, the bottom of the torsion spring is fixedly connected to the inner bottom surface of the outer box body, the top of the screw rod is rotatably connected to the inner top surface of the outer box body, the threaded sleeve is threadedly connected to the screw rod, the push block is located inside the inclined groove, the push block is slidably connected to the inclined groove, and the push block abuts against the inclined surface of the inclined groove.

[0018] By adopting the above technical solution, when the push block rises, the primary filter box moves to the left, and when the push block descends, the primary filter box moves to the right, thereby realizing horizontal reciprocating movement of the primary filter box and improving the filtering effect of the upper filter plate.

[0019] Preferably, the interior of the outer box body is symmetrically and longitudinally fixed with a support bar, the secondary filter box is slidably connected to the support bar, the interior of the outer box body is fixedly installed with a mounting plate, the top of the mounting plate is provided with a slide groove, the bottom of the collection box is fixedly connected with a card block, the card block is slidably connected to the slide groove, and there are no less than two secondary filter boxes and collection boxes.

[0020] By adopting the above technical solution, the support bar facilitates the placement of the secondary filter box and will not block the filtration of the lower filter plate. The collection box can be slidably installed on the mounting plate through the clamping block, and the secondary filter box and the collection box are both pressed by the box door, so that the secondary filter box and the collection box will not slip or deviate.

[0021] An operating method of a multi-stage screening device for corundum sand production, the operating steps are as follows: Step 1: The corundum sand material falls into the primary filter box through the feed tube, and the motor is started to work. The motor drives the rotating shaft and the extrusion block to rotate. Since the top of the extrusion block is set in a concave and convex wave shape, the contact rod is squeezed by the extrusion block and moves up and down; Step 2: The movement of the contact rod drives the movement of the crossbar, and the crossbar drives the sliding sleeves on both sides to move. The sliding sleeves slide on the side rods, and the side rods limit the sliding sleeves so that the sliding sleeves can only move back and forth in a straight line up and down. The movement of the crossbar drives the adjustment sleeve to move, and the adjustment sleeve drives the positioning plate to move through the connecting block, and the positioning plate drives the primary filter box to move back and forth up and down, so that the corundum sand inside the primary filter box is filtered through the upper filter plate; Step 3: When the motor rotates, it drives the synchronous pulley 1 to rotate. The synchronous pulley 1 drives the synchronous pulleys 2 on both sides to rotate through the toothed belt. The synchronous pulley 2 drives the half gear to rotate. Since the tooth block of the half gear is set to half a circle, when the tooth block of the half gear is engaged with the slave gear, the side rod will rotate. When the tooth block of the half gear is separated from the slave gear, the torsion spring resets the side rod and the slave gear, so that the side rod reciprocates, and the side rod drives the lead screw to reciprocate. Step 4: The two push blocks will move up and down synchronously, and the inclined slots on both sides are opened symmetrically with the center. When the push block rises, the primary filter box moves to the left, and when the push block descends, the primary filter box moves to the right. The corundum sand filtered by the upper filter plate will fall into the secondary filter box and then filtered by the lower filter plate, and finally fall into the collection box for collection. After the filtration is completed, open the box door, pull out the secondary filter box and the collection box, release the adhesion of the connecting cloth layer, and pull out the primary filter box for subsequent use.

[0022] Compared with the prior art, the invention has the following beneficial effects: a screening assembly and an auxiliary assembly are provided, the corundum sand material falls into the primary filter box through the feed tube, the motor is started, the motor drives the rotating shaft and the extrusion block to rotate, and since the top of the extrusion block is arranged in a concave-convex wave shape, the contact rod is squeezed by the extrusion block and moves up and down, and the auxiliary assembly reciprocates in the horizontal direction of the primary filter box, thereby improving the filtering effect of the upper filter plate and reducing the clogging situation; 1. A screening component is provided, and the corundum sand material falls into the primary filter box through the feed cylinder, and the motor is started to work, and the motor drives the rotating shaft and the extrusion block to rotate. Since the top of the extrusion block is a concave and convex wavy setting, the contact rod is squeezed by the extrusion block and moves up and down, and the movement of the contact rod drives the cross bar to move, and the cross bar drives the sliding sleeves on both sides to move, and the sliding sleeves slide on the side rods, and the side rods limit the sliding sleeves, so that the sliding sleeves can only move back and forth linearly up and down, and the movement of the cross bar drives the adjustment sleeve to move, and the adjustment sleeve drives the positioning plate to move through the connecting block, and the positioning plate drives the primary filter box to move up and down, so that the corundum sand material inside the primary filter box is filtered by the upper filter plate, and the filtered corundum sand material falls into the secondary filter box and then filtered by the lower filter plate, and finally falls into the collection box for collection, and the limit strip is used to limit the adjustment sleeve to keep the adjustment sleeve moving only horizontally, and the primary filter box is placed between the two positioning plates, and the connecting cloth layer prevents the corundum sand material from leaking out, and the top of the connecting cloth layer is adhered and fixed to the outer box body, which is convenient for the subsequent removal of the primary filter box; 2. An auxiliary component is provided. When the motor rotates, it drives the synchronous pulley 1 to rotate. The synchronous pulley 1 drives the synchronous pulleys 2 on both sides to rotate through the toothed belt. The synchronous pulley 2 drives the half gear to rotate. Since the tooth block of the half gear is set to half a circle, when the tooth block of the half gear is engaged with the slave gear, the side rod will rotate. When the tooth block of the half gear is separated from the slave gear, the torsion spring resets the side rod and the slave gear, so that the side rod reciprocates. The side rod drives the lead screw to reciprocate, and the push block slides in the inclined groove to limit the threaded sleeve, so that the threaded sleeve can reciprocate up and down. The rotation directions of the slave gears on both sides are opposite, and the thread directions of the two lead screws are opposite, so that the two push blocks move up and down synchronously. The inclined grooves on both sides are in the middle The two filter boxes are symmetrically opened, when the push block rises, the primary filter box moves to the left, and when the push block falls, the primary filter box moves to the right. The setting of the adjusting sleeve and the auxiliary spring can assist the sliding of the positioning plate and the primary filter box. The two positioning plates are fixed by the inner rod to maintain the fit movement of the primary filter box, and the primary filter box will not block the normal pushing of the push block when it moves up and down. The vertical and horizontal multi-directional movement of the primary filter box improves the filtering effect of the upper filter plate, reduces blockage, and solves the problem of screening only by horizontal shaking. When larger pieces of corundum sand are located at the bottom and smaller pieces of corundum sand are located at the top, it is not convenient for the smaller pieces of corundum sand in the upper part to be quickly screened and fallen, thereby reducing the screening efficiency and screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the cross-sectional structure of the outer box body of the present invention; Figure 2 It is a schematic diagram of the three-dimensional overall structure of the present invention; Figure 3 It is a schematic diagram of the side rod installation structure of the present invention; Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle; Figure 5 For the present invention Figure 3 The enlarged structural diagram at B in the middle; Figure 6 For the present invention Figure 3 The enlarged structural diagram at C in the middle; Figure 7 This is a schematic diagram of the half gear installation structure of the present invention; Figure 8 For the present invention Figure 7 The enlarged structural diagram at D in the middle; Fig. 9 This is a schematic diagram of the screw rod installation structure of the present invention; Fig.10 For the present invention Fig. 9 Enlarged structural diagram at E in the middle.

[0024] In the figure: 1. outer box body; 2. base; 3. box door; 4. feed barrel; 5. screening assembly; 51. motor; 52. rotating shaft; 53. extrusion block; 54. side rod; 55. sliding sleeve; 56. cross bar; 57. contact rod; 58. adjustment sleeve; 59. limit strip; 510. auxiliary spring; 511. positioning plate; 512. connecting block; 513. inner rod; 514. baffle; 6. auxiliary assembly; 61. synchronous pulley 1; 62. synchronous pulley 2; 63. toothed belt; 64. half gear; 65. slave gear; 66. torsion spring; 67. lead screw; 68. threaded sleeve; 69. push block; 610. chute; 7. primary filter box; 8. secondary filter box; 9. collecting box; 10. connecting cloth layer; 11. upper filter plate; 12. lower filter plate; 13. support strip; 14. mounting plate; 15. chute. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 10 The present invention provides a technical solution: a multi-stage screening device for corundum sand production, comprising an outer box body 1 and a base 2 fixedly installed at the bottom of the outer box body 1, a box door 3 is hinged on one side of the front of the outer box body 1, and a feed barrel 4 is connected to the top of the outer box body 1.

[0027] A primary filter box 7, a secondary filter box 8 and a collection box 9 are installed in sequence inside the outer box body 1 from top to bottom.

[0028] A circle of connecting cloth layer 10 is fixedly connected to the top of the primary filter box 7, and the top of the connecting cloth layer 10 is adhered to the inner top surface of the outer box body 1. An upper filter plate 11 is symmetrically fixedly installed on the bottom surface of the primary filter box 7, and a lower filter plate 12 is fixedly installed on the bottom of the secondary filter box 8.

[0029] A screening assembly 5 is arranged in the middle of the inner part of the outer box body 1, and the screening assembly 5 includes a motor 51 fixedly installed in the middle of the bottom of the base 2. The output end of the motor 51 passes through the base 2 and the outer box body 1 and is fixedly connected to a rotating shaft 52. The top of the rotating shaft 52 is fixedly connected to an extrusion block 53. The top of the extrusion block 53 is a wave-shaped arrangement with alternating concave and convex shapes. Side rods 54 are symmetrically rotatably connected on both sides of the inner bottom surface of the outer box body 1. A sliding sleeve 55 is sleeved on the outer side of the side rod 54, and the same cross bar 56 is fixedly connected between the two sliding sleeves 55.

[0030] The rotating shaft 52 is rotatably connected to the outer box body 1 , and a limit bearing is installed on the outer side of the side rod 54 . The limit bearing is fixed on the inner side walls of the outer box body 1 , and the sliding sleeve 55 is slidably connected to the side rod 54 .

[0031] A contact rod 57 is fixedly connected to the bottom of the cross bar 56, an adjustment sleeve 58 is symmetrically slidably connected to the outer side of the cross bar 56, an auxiliary spring 510 is sleeved on the outer side of the cross bar 56, a positioning plate 511 is fixedly installed on the top of the adjustment sleeve 58, and an inner rod 513 is fixedly connected between the two positioning plates 511.

[0032] The contact rod 57 is slidably connected to the recess of the extrusion block 53, the outer side of the cross bar 56 is fixedly connected to the limit strip 59, the adjustment sleeve 58 is slidably connected to the limit strip 59, the limit strip 59 is arranged horizontally, and there are no less than two limit strips 59.

[0033] The auxiliary spring 510 is located on one side of the adjustment sleeve 58 close to the side rod 54 . The auxiliary spring 510 is slidably connected to the cross bar 56 . One end of the auxiliary spring 510 is fixedly connected to the sliding sleeve 55 . The other end of the auxiliary spring 510 is fixedly connected to the adjustment sleeve 58 . The number of the auxiliary springs 510 is the same as that of the adjustment sleeve 58 .

[0034] The top of the adjustment sleeve 58 is fixedly connected to a connecting block 512, the top of the connecting block 512 is fixedly connected to the bottom of the positioning plate 511, there are no less than two inner rods 513, the inner rods 513 are located at the lower inner side of the two positioning plates 511, and a baffle 514 is fixedly connected to the middle of the top of the cross bar 56.

[0035] The interior of the outer box body 1 is symmetrically and longitudinally fixedly connected with a support bar 13, the secondary filter box 8 is slidably connected to the support bar 13, the interior of the outer box body 1 is fixedly installed with a mounting plate 14, the top of the mounting plate 14 is provided with a slide groove 15, the bottom of the collecting box 9 is fixedly connected with a card block, the card block is slidably connected to the slide groove 15, and there are no less than two secondary filter boxes 8 and collecting boxes 9.

[0036] Embodiment 1: Figure 1-Figure 6 As shown, a screening assembly 5 is provided, and the corundum sand material falls into the primary filter box 7 through the feed tube 4, and the motor 51 is started to work, and the motor 51 drives the rotating shaft 52 and the extrusion block 53 to rotate. Since the top of the extrusion block 53 is arranged in a concave and convex wave shape, the contact rod 57 is squeezed by the extrusion block 53 and moves up and down. The movement of the contact rod 57 drives the cross bar 56 to move, and the cross bar 56 drives the sliding sleeves 55 on both sides to move. The sliding sleeve 55 slides on the side rod 54, and the side rod 54 limits the sliding sleeve 55, so that the sliding sleeve 55 can only move back and forth in a straight line up and down.

[0037] The movement of the cross bar 56 drives the adjustment sleeve 58 to move, and the adjustment sleeve 58 drives the positioning plate 511 to move through the connecting block 512, and the positioning plate 511 drives the primary filter box 7 to move up and down, so that the corundum sand inside the primary filter box 7 is filtered through the upper filter plate 11, and the filtered corundum sand falls into the secondary filter box 8 and then filtered by the lower filter plate 12, and finally falls into the collecting box 9 for collection. The limit strip 59 is used to limit the adjustment sleeve 58 to keep the adjustment sleeve 58 moving only horizontally. The primary filter box 7 is placed between the two positioning plates 511, and the connecting cloth layer 10 blocks the leakage of the corundum sand. The top of the connecting cloth layer 10 is adhered and fixed to the outer box body 1, which is convenient for the subsequent removal of the primary filter box 7.

[0038] Auxiliary components 6 are symmetrically arranged on both sides of the interior of the outer box body 1, and the auxiliary component 6 includes a synchronous pulley 1 61 fixedly installed on the outer side of the lower part of the rotating shaft 52, and the inner bottom surface of the outer box body 1 is symmetrically connected to the synchronous pulley 2 62, and a toothed belt 63 is sleeved and installed between the synchronous pulley 1 61 and the synchronous pulleys 2 62 on both sides, and a half gear 64 is installed on the top of the synchronous pulley 2 62, a slave gear 65 is fixedly connected to the outer side of the lower part of the side rod 54, and a torsion spring 66 is sleeved on the lower part of the side rod 54.

[0039] The two side rods 54 are located outside the two synchronous pulleys 62 , the half gear 64 is fixedly connected to the synchronous pulleys 62 , and the half gear 64 is located below the collecting box 9 .

[0040] The half gear 64 is meshedly connected with the slave gear 65, and a screw rod 67 is fixedly installed on the top of the side rod 54 by bolts. A threaded sleeve 68 is sleeved on the outer side of the screw rod 67, and a push block 69 is fixedly connected to one side of the threaded sleeve 68. An inclined groove 610 is provided on one side of the positioning plate 511 close to the push block 69, and the two inclined grooves 610 are symmetrically provided with the center.

[0041] The torsion spring 66 is slidably connected to the side rod 54, the top of the torsion spring 66 is fixedly connected to the bottom of the gear 65, the bottom of the torsion spring 66 is fixedly connected to the inner bottom surface of the outer box body 1, the top of the screw rod 67 is rotatably connected to the inner top surface of the outer box body 1, the threaded sleeve 68 is threadedly connected to the screw rod 67, the push block 69 is located inside the inclined groove 610, the push block 69 is slidably connected to the inclined groove 610, and the push block 69 abuts against the inclined surface of the inclined groove 610.

[0042] Embodiment 2: Figure 7-10 As shown, an auxiliary component 6 is provided. When the motor 51 rotates, it drives the synchronous pulley 1 61 to rotate. The synchronous pulley 1 61 drives the synchronous pulley 2 62 on both sides to rotate through the toothed belt 63. The synchronous pulley 2 62 drives the half gear 64 to rotate. Since the tooth block of the half gear 64 is set to half a circle, when the tooth block of the half gear 64 is engaged with the slave gear 65, the side rod 54 will rotate. When the tooth block of the half gear 64 is separated from the slave gear 65, the torsion spring 66 resets the side rod 54 and the slave gear 65, so that the side rod 54 reciprocates. The side rod 54 drives the screw rod 67 to reciprocate. The push block 69 slides in the inclined groove 610 to limit the threaded sleeve 68, so that the threaded sleeve 68 can reciprocate up and down.

[0043] The rotation directions of the slave gears 65 on both sides are opposite, and the thread directions of the two lead screws 67 are opposite, so that the two push blocks 69 move up and down synchronously, and the inclined grooves 610 on both sides are opened symmetrically with the center. When the push block 69 rises, the primary filter box 7 moves to the left, and when the push block 69 descends, the primary filter box 7 moves to the right. The setting of the adjustment sleeve 58 and the auxiliary spring 510 can assist the sliding of the positioning plate 511 and the primary filter box 7. The two positioning plates 511 are fixed by the inner rod 513 to maintain the fitting movement of the primary filter box 7, and the primary filter box 7 will not block the normal pushing of the push block 69 when it moves up and down.

[0044] By moving the primary filter box 7 in multiple directions vertically and horizontally, the filtering effect of the upper filter plate 11 is improved, clogging is reduced, and the problem of screening only by horizontal shaking is solved. When larger pieces of corundum sand are located at the bottom and smaller pieces of corundum sand are located at the top, it is not convenient for the smaller pieces of corundum sand at the top to be quickly screened and dropped, thereby reducing the screening efficiency and the screening effect.

[0045] Working principle: When using the device, first, Figure 1-Figure 10 As shown, the corundum sand material falls into the primary filter box 7 through the feed tube 4, and the motor 51 is started to work. The motor 51 drives the rotating shaft 52 and the extrusion block 53 to rotate, so that the contact rod 57 is squeezed by the extrusion block 53 and moves up and down.

[0046] The movement of the contact rod 57 drives the cross bar 56 to move, the cross bar 56 drives the sliding sleeves 55 on both sides to move, the sliding sleeves 55 slide on the side rods 54, the movement of the cross bar 56 drives the adjustment sleeve 58 to move, the adjustment sleeve 58 drives the positioning plate 511 to move through the connecting block 512, the positioning plate 511 drives the primary filter box 7 to move up and down, and the corundum sand material inside the primary filter box 7 is filtered through the upper filter plate 11.

[0047] When the motor 51 rotates, it also drives the synchronous pulley 1 61 to rotate. The synchronous pulley 1 61 drives the synchronous pulley 2 62 on both sides to rotate through the toothed belt 63. The synchronous pulley 2 62 drives the half gear 64 to rotate, so that the side rod 54 reciprocates, and the side rod 54 drives the screw rod 67 to reciprocate.

[0048] The two push blocks 69 will move up and down synchronously. When the push block 69 rises, the primary filter box 7 moves to the left, and when the push block 69 descends, the primary filter box 7 moves to the right. The corundum sand material filtered by the upper filter plate 11 will fall into the secondary filter box 8 and then filtered by the lower filter plate 12, and finally fall into the collecting box 9 for collection. After the filtration is completed, open the box door 3, pull out the secondary filter box 8 and the collecting box 9, release the adhesion of the connecting cloth layer 10, and pull out the primary filter box 7 for subsequent use.

[0049] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-stage screening device for corundum sand production, comprising an outer box (1) and a base (2) fixedly mounted on the bottom of the outer box (1), a box door (3) being hingedly connected to one side of the front of the outer box (1), and a feed barrel (4) being connected to the top of the outer box (1); It is characterized in that Also includes: A screening component (5) is arranged in the middle of the outer box (1), auxiliary components (6) are symmetrically arranged on both sides of the inner part of the outer box (1), and a primary filter box (7), a secondary filter box (8) and a collection box (9) are installed in sequence from top to bottom inside the outer box (1); A circle of connecting cloth layer (10) is fixedly connected to the top of the primary filter box (7), the top of the connecting cloth layer (10) is adhered to the inner top surface of the outer box body (1), an upper filter plate (11) is symmetrically fixedly installed on the bottom surface of the primary filter box (7), and a lower filter plate (12) is fixedly installed on the bottom of the secondary filter box (8); The screening assembly (5) comprises a motor (51) fixedly mounted in the middle of the bottom of the base (2); the output end of the motor (51) passes through the base (2) and the outer box (1) and is fixedly connected to a rotating shaft (52); the top end of the rotating shaft (52) is fixedly connected to an extrusion block (53); the top end of the extrusion block (53) is arranged in a wave shape with alternating concave and convex shapes; side rods (54) are symmetrically rotatably connected to the inner bottom surface of the outer box (1); the outer sides of the side rods (54) are sleeved with sliding sleeves (55); and the same cross bar (56) is fixedly connected between the two sliding sleeves (55); A contact rod (57) is fixedly connected to the bottom of the cross bar (56), an adjustment sleeve (58) is symmetrically slidably connected to the outer side of the cross bar (56), an auxiliary spring (510) is sleeved on the outer side of the cross bar (56), a positioning plate (511) is fixedly installed on the top of the adjustment sleeve (58), and an inner rod (513) is fixedly connected between the two positioning plates (511); The auxiliary component (6) comprises a synchronous pulley 1 (61) fixedly mounted on the outer side of the lower part of the rotating shaft (52); a synchronous pulley 2 (62) is symmetrically rotatably connected to the inner bottom surface of the outer box body (1); a toothed belt (63) is sleeved and mounted between the synchronous pulley 1 (61) and the synchronous pulleys 2 (62) on both sides; a half gear (64) is mounted on the top of the synchronous pulley 2 (62); a slave gear (65) is fixedly connected to the outer side of the lower part of the side rod (54); and a torsion spring (66) is sleeved on the lower part of the side rod (54); The half gear (64) is meshedly connected with the slave gear (65); a screw rod (67) is fixedly installed on the top of the side rod (54) by means of bolts; a threaded sleeve (68) is sleeved on the outer side of the screw rod (67); a push block (69) is fixedly connected to one side of the threaded sleeve (68); an inclined groove (610) is provided on one side of the positioning plate (511) close to the push block (69); and the two inclined grooves (610) are symmetrically provided with respect to the center.

2. A multi-stage screening device for corundum sand production according to claim 1, characterized in that: The rotating shaft (52) is rotatably connected to the outer box body (1), a limit bearing is installed on the outer side of the side rod (54), the limit bearing is fixed on the inner side walls of the outer box body (1), and the sliding sleeve (55) is slidably connected to the side rod (54).

3. A multi-stage screening device for corundum sand production according to claim 2, characterized in that: The contact rod (57) is slidably connected to the recess of the extrusion block (53); the outer side of the cross bar (56) is fixedly connected to a limit strip (59); the adjustment sleeve (58) is slidably connected to the limit strip (59); the limit strip (59) is arranged transversely, and there are no less than two limit strips (59).

4. A multi-stage screening device for corundum sand production according to claim 3, characterized in that: The auxiliary spring (510) is located on a side of the adjustment sleeve (58) close to the side rod (54), the auxiliary spring (510) is slidably connected to the cross rod (56), one end of the auxiliary spring (510) is fixedly connected to the sliding sleeve (55), and the other end of the auxiliary spring (510) is fixedly connected to the adjustment sleeve (58), and the number of the auxiliary springs (510) is the same as that of the adjustment sleeve (58).

5. A multi-stage screening device for corundum sand production according to claim 4, characterized in that: A connecting block (512) is fixedly connected to the top of the adjusting sleeve (58), the top of the connecting block (512) is fixedly connected to the bottom of the positioning plate (511), there are no less than two inner rods (513), the inner rods (513) are located below the inner sides of the two positioning plates (511), and a baffle (514) is fixedly connected to the middle of the top of the cross bar (56).

6. A multi-stage screening device for corundum sand production according to claim 5, characterized in that: The two side rods (54) are located outside the two synchronous belt pulleys (62), the half gear (64) is fixedly connected to the synchronous belt pulley (62), and the half gear (64) is located below the collection box (9).

7. A multi-stage screening device for corundum sand production according to claim 6, characterized in that: The torsion spring (66) is slidably connected to the side rod (54), the top of the torsion spring (66) is fixedly connected to the bottom of the secondary gear (65), the bottom of the torsion spring (66) is fixedly connected to the inner bottom surface of the outer box body (1), the top of the lead screw (67) is rotatably connected to the inner top surface of the outer box body (1), the threaded sleeve (68) is threadedly connected to the lead screw (67), the push block (69) is located inside the inclined groove (610), the push block (69) is slidably connected to the inclined groove (610), and the push block (69) abuts against the inclined surface of the inclined groove (610).

8. A multi-stage screening device for corundum sand production according to claim 7, characterized in that: The inner part of the outer box (1) is symmetrically and longitudinally fixedly connected with a support bar (13), the secondary filter box (8) is slidably connected to the support bar (13), the inner part of the outer box (1) is fixedly installed with a mounting plate (14), the top of the mounting plate (14) is provided with a slide groove (15), the bottom of the collection box (9) is fixedly connected with a clamping block, the clamping block is slidably connected to the slide groove (15), and there are no less than two of each of the secondary filter box (8) and the collection box (9).

9. An operating method of a multi-stage screening device for corundum sand production, characterized in that: The multi-stage screening device for corundum sand production as claimed in claim 8 is used in the following steps: Step 1: The corundum sand material passes through the feed tube (4) and falls onto the primary filter box (7), and the motor (51) is started to work. The motor (51) drives the rotating shaft (52) and the extrusion block (53) to rotate. Since the top of the extrusion block (53) is arranged in a concave-convex wave shape, the contact rod (57) is squeezed by the extrusion block (53) and moves up and down; Step 2: The contact rod (57) moves to drive the crossbar (56), the crossbar (56) drives the sliding sleeves (55) on both sides to move, the sliding sleeves (55) slide on the side rods (54), and the side rods (54) limit the sliding sleeves (55), so that the sliding sleeves (55) only move back and forth in a straight line up and down, the crossbar (56) moves to drive the adjustment sleeve (58), the adjustment sleeve (58) drives the positioning plate (511) to move through the connecting block (512), and the positioning plate (511) drives the primary filter box (7) to move back and forth up and down, so that the corundum sand material inside the primary filter box (7) is filtered through the upper filter plate (11); Step 3: When the motor (51) rotates, the synchronous pulley 1 (61) is driven to rotate. The synchronous pulley 1 (61) drives the synchronous pulleys 2 (62) on both sides to rotate through the toothed belt (63). The synchronous pulley 2 (62) drives the half gear (64) to rotate. Since the tooth block of the half gear (64) is set to half a circle, when the tooth block of the half gear (64) is engaged with the slave gear (65), the side rod (54) will rotate. When the tooth block of the half gear (64) is separated from the slave gear (65), the torsion spring (66) resets the side rod (54) and the slave gear (65), so that the side rod (54) reciprocates. The side rod (54) drives the screw rod (67) to reciprocate. Step 4: The two push blocks (69) move up and down synchronously, and the inclined slots (610) on both sides are opened symmetrically with respect to the center. When the push block (69) rises, the primary filter box (7) moves to the left, and when the push block (69) falls, the primary filter box (7) moves to the right. The corundum sand material filtered by the upper filter plate (11) falls into the secondary filter box (8) and is filtered by the lower filter plate (12) and finally falls into the collection box (9) for collection. After the filtering is completed, the box door (3) is opened, the secondary filter box (8) and the collection box (9) are pulled out, and the adhesion of the connecting cloth layer (10) is released. The primary filter box (7) can be pulled out for subsequent use.

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