Dustproof ore crusher capable of realizing multi-stage screening

Abstract

The invention discloses a dust-proof ore crusher capable of achieving multi-stage screening, and belongs to the technical field of ore crushing. By arranging a connecting strip, a first-stage screening frame, a second-stage screening frame, a crankshaft, a connecting brace and a connecting base, crushed ore falls into the first-stage screening frame; a rotating motor is started to control a crankshaft to rotate through transmission of a bevel gear II and a bevel gear I, so that the crankshaft drives a connecting brace to reciprocate, a first-stage screening frame and a second-stage screening frame are pulled to shake back and forth in a dustproof screening box, and a connecting strip drives a moving block to slide on the surface of a mounting sliding rod to extrude a reset spring to deform; under the rebound action of the reset springs, the auxiliary connecting strips drive the first-stage screening frame and the second-stage screening frame to vibrate, so that vibration transmitted to the dustproof screening box when the first-stage screening frame and the second-stage screening frame are subjected to vibration screening and time division is reduced, and meanwhile ores falling into the first-stage screening frame and the second-stage screening frame are screened; and the ore crushing and screening efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of ore crushing, and in particular relates to a dust-proof ore crusher capable of multi-stage screening. Background Art

[0002] Ores are generally large in size after mining. If large pieces of ore are not crushed during subsequent processing, they may be discarded due to equipment limitations or processing technology requirements. For ores containing a variety of useful minerals, crushing can fully dissociate various mineral particles and separate useful minerals. By crushing, the particle size of the ore can be made uniform, and the ore resources can be fully utilized to avoid waste caused by excessive ore particle size. Ore crushers are used to crush and pulverize the mined ore to meet the ore particle size requirements of subsequent mineral processing, smelting and other processes.

[0003] After the existing ore crusher crushes the ore, it transports the crushed ore to the screening device for screening. The crushing and screening of the ore need to be carried out separately, which leads to low efficiency of ore crushing and screening, affecting the efficiency of ore processing. At the same time, after the ore has been screened for a certain period of time, a certain amount of ore will accumulate on the screening frame, which is easy to clog the screening frame and affect the screening efficiency of the ore. The screening frame needs to be pushed down to pour out the ore, which is inconvenient to clean the ore and will cause damage to the screening frame. Therefore, improvement is needed. Summary of the Invention

[0004] In order to overcome the above-mentioned defects, the present invention provides a dust-proof ore crusher capable of multi-stage screening, which solves the problem that after the existing ore crusher crushes the ore, the crushed ore is transported to a screening device for screening, and the crushing and screening of the ore need to be carried out separately, resulting in low efficiency in crushing and screening of the ore, affecting the efficiency of ore processing. At the same time, after the ore has been screened for a certain period of time, a certain amount of ore will accumulate on the screening frame, which is easy to clog the screening frame and affect the screening efficiency of the ore. The screening frame needs to be pushed down to pour out the ore, which is inconvenient to clean the ore and will cause damage to the screening frame.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a dust-proof ore crusher capable of multi-stage screening, comprising a dust-proof screening box, wherein a first-level screening frame and a second-level screening frame are slidingly installed inside the dust-proof screening box, and the second-level screening frame is located at the bottom of the first-level screening frame and corresponds to the position of the first-level screening frame, the sieve hole sizes of the first-level screening frame and the second-level screening frame decrease successively, the structures of the first-level screening frame and the second-level screening frame are the same, and mounting bars are symmetrically fixedly installed on the same side of the first-level screening frame and the second-level screening frame, a crushing box is fixedly installed on the top of the dust-proof screening box, and a vibration mechanism is provided on one side of the dust-proof screening box and the crushing box.

[0006] As a further solution of the present invention: a material guide inclined plate is fixedly installed at the bottom of the dust-proof screening box, a discharge port is provided at the bottom of one side of the dust-proof screening box, and the discharge port is connected to the material guide inclined plate, two rectangular chutes are respectively provided on the top of the two sides opposite to the discharge port, and four rectangular mounting grooves are respectively provided on the two sides of the dust-proof screening box perpendicular to the discharge port, two rectangular mounting grooves form a group, and each group of rectangular mounting grooves has the same height as the rectangular chute.

[0007] As a further solution of the present invention: a mounting slide rod is fixedly installed inside the rectangular mounting groove, a moving block is slidably installed through the central position of the surface of the mounting slide rod, and the surfaces of the mounting slide rod on both sides of the moving block are respectively sleeved with return springs, and a connecting strip is fixedly installed between the two moving blocks on the same side of the inner wall of the dust-proof screening box, and the two ends of the connecting strip are slidably connected to the inside of the rectangular slide groove, one end of the connecting strip is penetrated by a fixed socket, and the opposite sides of the two connecting strips are respectively provided with positioning slots.

[0008] As a further solution of the present invention: positioning strips are fixedly installed on both sides of the first-level screening frame, and the positioning strips are inserted into the positioning slots. A connecting slot is provided at the central position of one side of the first-level screening frame perpendicular to the positioning strips, and connecting studs are fixedly installed at both ends of the connecting slot, and a connecting nut is threaded through the surface of the connecting stud.

[0009] As a further solution of the present invention: a mounting hole is provided inside the mounting bar, and one end of the mounting hole is connected to a movable groove inside the mounting bar, a fixed plug rod is slidably installed inside the mounting hole, and one end of the fixed plug rod passes through the mounting hole and extends to the outside of the mounting bar, and a limit plate is fixedly installed on the surface of one end of the fixed plug rod located inside the mounting hole, and a fixing spring is sleeved on the surface of the fixed plug rod located inside the mounting hole, and one end of the fixed plug rod away from the limit plate passes through the mounting hole and extends into the movable groove, and a movable screw is fixedly installed on one end of the fixed plug rod located inside the movable groove, and the movable screw passes through the movable groove and extends to the surface of the outside of the mounting bar and is threadedly connected with a fixing nut.

[0010] As a further solution of the present invention: two crushing rollers are rotatably installed inside the crushing box through bearings, and the two crushing rollers are meshed with each other, one end of the two crushing rollers passes through the crushing box and extends to the outside of the crushing box, where a driven gear and a driving gear are fixedly installed respectively, and the driven gear and the driving gear are meshed with each other, a crushing motor is fixedly installed at the bottom of the crushing box on the side away from the driving gear, and the output end of the crushing motor is fixedly connected to one of the crushing rollers, and dust covers are fixedly installed on both sides of the bottom of the crushing box, and the dust covers are covered and fixed on the top of the dust-proof screening box.

[0011] As a further solution of the present invention: the vibration mechanism includes a support plate, the number of the support plates is four, and two support plates form a group, a crankshaft is rotatably installed between each group of support plates through bearings, and the ends of the two crankshafts close to each other are fixedly connected through the support plate, a connecting strip is rotatably installed on the surface of the crankshaft, and the end of the connecting strip away from the crankshaft is rotatably installed with a connecting seat through a pin shaft, and the connecting seat is inserted into the connecting slot, and the connecting studs pass through both sides of the connecting seat, and a connecting rod is fixedly installed on the top of the crankshaft, and a bevel gear 1 is fixedly installed on the top of the connecting rod, and a bevel gear 2 is meshed with the surface of the bevel gear 1, a rotating motor is provided on one side of the bevel gear 2, and the output end of the rotating motor is fixedly connected to the bevel gear 2, and the rotating motor is fixedly connected to the top of one side of the dust screening box.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by setting a connecting strip, a primary screening frame, a secondary screening frame, a crankshaft, a connecting rod and a connecting seat, the primary screening frame and the secondary screening frame are respectively fixed between the corresponding connecting strips inside the dustproof screening box, and the connecting seat is plugged and fixed on one side of the primary screening frame and the secondary screening frame, and an appropriate amount of ore is poured into the crushing box. The crushed ore falls into the primary screening frame, and the rotating motor is started to rotate the crankshaft through the transmission control of the bevel gear 2 and the bevel gear 1, so that the crankshaft drives the connecting strip The connecting bar drives the moving block to slide on the surface of the mounting slide rod to deform the reset spring. Under the rebound action of the reset spring, the connecting bar drives the first and second screening frames to vibrate, thereby reducing the vibration transmitted to the dust-proof screening box during vibration screening of the first and second screening frames. At the same time, the ore falling inside the first and second screening frames is screened, thereby improving the efficiency of ore crushing and screening. 2. In the present invention, by setting the connecting strip, the fixed insertion hole, the first-level screening frame, the second-level screening frame, the fixed insertion rod, the fixed spring and the fixed nut, the movable screw is pushed to drive the fixed insertion rod to retract into the mounting hole, so that the fixed spring is squeezed and deformed inside the mounting hole, and the fixed nut is tightened to the surface of the mounting strip to clamp and fix the movable screw, ensuring that the fixed insertion rod does not extend out of the mounting hole, the first-level screening frame is inserted into the rectangular slide groove, and the positioning insertion strip is inserted into the corresponding positioning slot until the first-level screening frame is completely inserted between the opposite connecting strips. The position of the fixed rod corresponds to the fixed socket. Loosen the fixing nut. Under the rebound action of the fixing spring, lift the limit plate and slide it inside the mounting hole. Push the fixed rod out of the mounting hole and insert it into the fixed socket. Tighten the fixing nut to lock the movable screw so that the fixed rod will not detach from the fixed socket at will. Repeat the steps to fix the secondary screening frame inside the dustproof screening box, so as to facilitate the disassembly and installation of the primary screening frame and the secondary screening frame, and clean the screened ore inside the primary screening frame and the secondary screening frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 Schematic diagram of the cross-sectional structure of the dust-proof screening box of the present invention; Figure 3 This is a schematic cross-sectional view of the primary screening frame and mounting bars of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at A in the middle; Figure 5 Schematic diagram of the cross-sectional structure of the crushing box and crushing roller of the present invention; Figure 6 This is a schematic structural diagram of the crankshaft, connecting rods and rotating motor of the present invention; In the figure: 1. Dust-proof screening box; 101. Guide ramp; 102. Discharge port; 103. Rectangular chute; 104. Rectangular mounting slot; 105. Mounting slide; 106. Moving block; 107. Return spring; 108. Connecting strip; 109. Fixing socket; 110. Positioning slot; 2. First-level screening frame; 201. Positioning strip; 202. Connecting slot; 203. Connecting stud; 204. Connecting nut; 3. Second-level screening frame; 4. Mounting strip; 401. Mounting hole; 402. Moving block Movable groove; 403, fixed plug rod; 404, limit plate; 405, fixed spring; 406, movable screw; 407, fixed nut; 5, crushing box; 501, crushing roller; 502, driven gear; 503, driving gear; 504, crushing motor; 505, dust cover; 6, vibration mechanism; 601, support plate; 602, crankshaft; 603, connecting rod; 604, connecting seat; 605, connecting rod; 606, bevel gear 1; 607, bevel gear 2; 608, rotating motor. DETAILED DESCRIPTION

[0014] The technical solution of the present application will be further described in detail below in conjunction with specific implementation methods.

[0015] like Figure 1-6 As shown, the present invention provides a technical solution: a dust-proof ore crusher capable of multi-stage screening, comprising a dust-proof screening box 1, a guide inclined plate 101 fixedly installed at the bottom of the dust-proof screening box 1, a discharge port 102 provided at the bottom of one side of the dust-proof screening box 1, and the discharge port 102 is communicated with the guide inclined plate 101. Due to the provision of the guide inclined plate 101 and the discharge port 102, the ore screened by the primary screening frame 2 and the secondary screening frame 3 falls on the top of the guide inclined plate 101, and as the guide inclined plate 101 slides toward the discharge port 102, the ore is discharged from the dust-proof screening box 1 through the discharge port 102, thereby preventing the screened ore from accumulating inside the dust-proof screening box 1; Two rectangular chutes 103 are respectively provided on the top of the two sides opposite to the discharge port 102 of the dust-proof screening box 1, and four rectangular mounting grooves 104 are respectively provided on the two sides perpendicular to the discharge port 102 of the dust-proof screening box 1. Two rectangular mounting grooves 104 form a group, and each group of rectangular mounting grooves 104 has the same height as the rectangular chute 103. A mounting slide 105 is fixedly installed inside the rectangular mounting groove 104, and a moving block 106 is slidably installed through the central position of the surface of the mounting slide 105, and the surfaces of the mounting slide 105 on both sides of the moving block 106 are respectively sleeved with return springs 107. By providing the moving block 106 and the return spring 107, when the primary screening frame 2 and the secondary screening frame 3 vibrate inside the dustproof screening box 1, the control connecting strip 108 drives the moving block 106 to slide on the surface of the mounting slide 105, squeezing the return spring 107 to deform and rebound, and under the rebound action of the return spring 107, the auxiliary connecting strip 108 drives the primary screening frame 2 and the secondary screening frame 3 to vibrate and screen, thereby improving the efficiency of the primary screening frame 2 and the secondary screening frame 3 in screening ore; A connecting bar 108 is fixedly installed between the two moving blocks 106 on the same side of the inner wall of the dustproof screening box 1, and both ends of the connecting bar 108 are slidably connected to the inside of the rectangular slide 103, and positioning slots 110 are respectively provided on the opposite sides of the two connecting bars 108. A first-level screening frame 2 and a second-level screening frame 3 are slidingly installed inside the dust-proof screening box 1, and the second-level screening frame 3 is located at the bottom of the first-level screening frame 2 and corresponds to the position of the first-level screening frame 2. The sieve hole sizes of the first-level screening frame 2 and the second-level screening frame 3 decrease successively. The structures of the first-level screening frame 2 and the second-level screening frame 3 are the same. Positioning insertion strips 201 are fixedly installed on both sides of the first-level screening frame 2, and the positioning insertion strips 201 are inserted into the positioning slots 110. Because the positioning slots 110 and the positioning insertion strips 201 are provided, when the first-level screening frame 2 is inserted into the two opposite rectangular slides 103, the first-level screening frame 2 is stuck between the two opposite connecting strips 108 until the positioning insertion strips 201 are fully inserted into the corresponding positioning slots 110, ensuring that there is no positional displacement when the first-level screening frame 2 is fixed inside the dust-proof screening box 1.

[0016] A fixed plug hole 109 is provided at one end of the connecting bar 108, and the mounting bars 4 are symmetrically fixedly installed on the same side of the primary screening frame 2 and the secondary screening frame 3. A mounting hole 401 is provided inside the mounting bar 4, and one end of the mounting hole 401 is connected to a movable groove 402 inside the mounting hole 401. A fixed plug rod 403 is slidably installed inside the mounting hole 401, and one end of the fixed plug rod 403 extends through the mounting hole 401 to the outside of the mounting bar 4. By providing the fixed plug hole 109 and the fixed plug rod 403, the primary screening frame 2 is clamped between the two opposite connecting bars 108, so that the positions of the fixed plug hole 109 and the fixed plug rod 403 correspond to each other, and the fixed plug rod 403 is controlled to be inserted into the fixed plug hole 109, so that the primary screening frame 2 is clamped and fixed between the two opposite connecting bars 108; The fixed plug rod 403 is located in the mounting hole 401 and fixedly installed on the surface of one end thereof. The fixed plug rod 403 is located in the mounting hole 401 and is sleeved with a fixed spring 405 on the surface thereof. The end of the fixed plug rod 403 away from the limit plate 404 passes through the mounting hole 401 and extends to the inside of the movable groove 402. The end of the fixed plug rod 403 located in the movable groove 402 is fixedly installed with a movable screw 406. The movable screw 406 passes through the movable groove 402 and extends to the surface outside the mounting bar 4 and is threadedly connected with a fixing nut 407. 407, when the movable screw 406 is pushed to drive the fixed plug 403 to slide inside the mounting hole 401, the limit plate 404 is synchronously slid inside the mounting hole 401 to squeeze the fixed spring 405 to deform, and the limit plate 404 is lifted up under the rebound action of the fixed spring 405, and the fixed plug 403 is pushed out of the mounting hole 401 and inserted into the corresponding fixed plug hole 109, and the first-level screening frame 2 is clamped and fixed between the two opposite connecting bars 108, and then the fixing nut 407 is tightened to lock the movable screw 406 to ensure that the fixed plug 403 will not slide freely inside the mounting hole 401.

[0017] A crushing box 5 is fixedly installed on the top of the dust-proof screening box 1. Two crushing rollers 501 are rotatably installed inside the crushing box 5 through bearings, and the two crushing rollers 501 are meshed with each other. One end of the two crushing rollers 501 passes through the crushing box 5 and extends to the outside of the crushing box 5. A driven gear 502 and a driving gear 503 are fixedly installed respectively, and the driven gear 502 and the driving gear 503 are meshed with each other. A crushing motor 504 is fixedly installed on the bottom of the crushing box 5 away from the driving gear 503, and the output end of the crushing motor 504 is fixedly connected to one of the crushing rollers 501. The bottom of the crushing box 5 Dustproof covers 505 are fixedly installed on both sides, and the dustproof covers 505 are covered and fixed on the top of the dustproof screening box 1. Through the driven gear 502 and the driving gear 503, after the ore is put into the crushing box 5, the crushing motor 504 is started to drive the crushing roller 501 to rotate, and at the same time drive the driving gear 503 to rotate. After the driving gear 503 and the driven gear 502 are engaged, the two crushing rollers 501 are controlled to rotate in opposite directions inside the crushing box 5, the ore is squeezed and crushed, and the crushed ore falls from the crushing box 5 into the dustproof screening box 1.

[0018] A vibration mechanism 6 is provided on one side of the dust-proof screening box 1 and the crushing box 5. The vibration mechanism 6 includes four support plates 601, and two support plates 601 form a group. A crankshaft 602 is rotatably mounted between each group of support plates 601 via a bearing, and the ends of the two crankshafts 602 that are close to each other pass through the support plate 601 and are fixedly connected. A connecting bar 603 is rotatably mounted on the surface of the crankshaft 602, and a connecting seat 604 is rotatably mounted on the end of the connecting bar 603 that is away from the crankshaft 602 via a pin. Due to the provision of the crankshaft 602, when the crankshaft 602 rotates between the two support plates 601, one end of the connecting bar 603 rotates on the surface of the crankshaft 602, and at the same time, the crankshaft 602 pulls the connecting bar 603 to move back and forth, thereby driving the primary screening frame 2 and the secondary screening frame 3 to vibrate back and forth, thereby vibrating and screening the ore. A connecting slot 202 is provided at the center of one side of the primary screening frame 2 perpendicular to the positioning insert 201. Connecting studs 203 are fixedly installed at both ends of the connecting slot 202. Connecting nuts 204 are threadedly connected to the surfaces of the connecting studs 203. A connecting seat 604 is inserted into the connecting slot 202, and the connecting studs 203 pass through both sides of the connecting seat 604. By providing the connecting seat 604 and the connecting nuts 204, the connecting seat 604 is clamped into the connecting slot 202, so that the connecting studs 203 pass through the connecting seat 604. The connecting nuts 204 are tightened to clamp the connecting seat 604 into the connecting slot 202. When the connecting strip 603 pulls the connecting seat 604 to reciprocate, the primary screening frame 2 is simultaneously driven to reciprocate within the dustproof screening box 1.

[0019] The top crankshaft 602 is fixedly installed with a connecting rod 605, and a bevel gear 1 606 is fixedly installed on the top of the connecting rod 605. A bevel gear 2 607 is meshed with the surface of the bevel gear 1 606. A rotating motor 608 is provided on one side of the bevel gear 2 607, and the output end of the rotating motor 608 is fixedly connected to the bevel gear 2 607. The rotating motor 608 is fixedly connected to the top of one side of the dust-proof screening box 1. Because bevel gear 1 606 and bevel gear 2 607 are provided, the rotating motor 608 is started to drive the bevel gear 2 607 to rotate. After the bevel gear 2 607 and the bevel gear 1 606 are meshed, the crankshaft 602 is controlled to rotate between the support plates 601, so that the connecting pull bar 603 moves back and forth.

[0020] The working principle of the present invention is: Push the moving screw 406 to drive the fixed insertion rod 403 to retract into the mounting hole 401, so that the fixing spring 405 is squeezed and deformed inside the mounting hole 401, and tighten the fixing nut 407 to lock the moving screw 406 to ensure that the moving screw 406 does not slide freely inside the moving groove 402, and insert the first-level screening frame 2 into the corresponding rectangular slide 103 so that the two sides of the first-level screening frame 2 are tightly attached between the two opposite connecting strips 108 until the positioning strip 201 is inserted into the corresponding positioning slot 110. The position of the fixed rod 403 corresponds to that of the fixed socket 109. Loosen the fixing nut 407. Under the rebound action of the fixing spring 405, the fixed rod 403 is pushed out of the mounting hole 401 and inserted into the corresponding fixed socket 109. Then tighten the fixing nut 407 to fix the fixed rod 403 inside the fixed socket 109, so that the first-level screening frame 2 is connected and fixed to the connecting bar 108. Repeat the steps to fix the second-level screening frame 3 between the corresponding connecting bars 108, so that the position of the second-level screening frame 3 is aligned with that of the first-level screening frame 2. Insert the connecting seat 604 into the connecting slot 202, make the connecting stud 203 pass through the connecting seat 604, tighten the connecting nut 204 to fix the connecting seat 604 inside the connecting slot 202, repeat the steps to connect and fix the connecting seat 604 to one side of the secondary screening frame 3, pour ore into the top of the crushing box 5, start the crushing motor 504 to drive the crushing roller 501 to rotate, and through the meshing of the driven gear 502 and the driving gear 503, control the two crushing rollers 501 to mesh and rotate synchronously inside the crushing box 5 to crush the ore, so that the crushed ore falls on the top of the primary screening frame 2, and at the same time start the rotating motor 608 to control the crankshaft 602 to rotate. The connecting strip 603 moves back and forth with the rotation of the crankshaft 602, pulling the primary screening frame 2 and the secondary screening frame 3 to shake inside the dust-proof screening box 1. When shaking, the primary screening frame 2 and the secondary screening frame 3 drive the connecting strip 108 to move back and forth on the inner wall of the dust-proof screening box 1, so that the connecting strip 108 drives the moving block 106 to slide on the surface of the corresponding mounting slide rod 105, squeezing the return spring 107 to deform, and the return spring 107 rebounds to assist the connecting strip 108 to drive the primary screening frame 2 or the secondary screening frame 3 to shake, thereby improving the screening efficiency of the ore. The ore screened by the primary screening frame 2 and the secondary screening frame 3 falls on the top of the guide inclined plate 101 and is discharged from the discharge port 102; After a certain period of screening, a large amount of ore is accumulated inside the primary screening frame 2 and the secondary screening frame 3. Stop adding ore, stop the crushing motor 504 and the rotating motor 608 at the same time, loosen the connecting nut 204 and pull the connecting seat 604 out of the connecting slot 202, and separate the connecting seat 604 from the secondary screening frame 3. Then loosen the fixing nut 407 and push the moving screw 406 to drive the fixed plug 403 out of the fixed socket 109, pull the primary screening frame 2 out of the connecting bar 108, repeat the steps to pull the secondary screening frame 3 out from the connecting bar 108, so as to facilitate the dumping of the ore accumulated inside the primary screening frame 2 and the secondary screening frame 3.

[0021] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0023] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0024] In the present invention, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the descriptions with reference to the terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more schemes or examples.

Claims

1. A dust-proof ore crusher capable of multi-stage screening, comprising a dust-proof screening box (1), characterized in that: A first-stage screening frame (2) and a second-stage screening frame (3) are slidably installed inside the dust-proof screening box (1), and the second-stage screening frame (3) is located at the bottom of the first-stage screening frame (2) and corresponds to the position of the first-stage screening frame (2). The sieve holes of the first-stage screening frame (2) and the second-stage screening frame (3) decrease in size in sequence. The first-stage screening frame (2) and the second-stage screening frame (3) have the same structure. Mounting bars (4) are symmetrically fixedly installed on the same side of the first-stage screening frame (2) and the second-stage screening frame (3). A crushing box (5) is fixedly installed on the top of the dust-proof screening box (1), and a vibration mechanism (6) is provided on one side of the dust-proof screening box (1) and the crushing box (5).

2. The dust-proof ore crusher capable of multi-stage screening according to claim 1, characterized in that: A guide inclined plate (101) is fixedly installed at the bottom of the dust-proof screening box (1), a discharge port (102) is provided at the bottom of one side of the dust-proof screening box (1), and the discharge port (102) is communicated with the guide inclined plate (101), two rectangular chutes (103) are respectively provided on the tops of the two sides of the dust-proof screening box (1) opposite to the discharge port (102), and four rectangular mounting grooves (104) are respectively provided on the two sides of the dust-proof screening box (1) perpendicular to the discharge port (102), two rectangular mounting grooves (104) form a group, and each group of rectangular mounting grooves (104) has the same height as the rectangular chute (103).

3. The dust-proof ore crusher capable of multi-stage screening according to claim 2, characterized in that: A mounting slide bar (105) is fixedly installed inside the rectangular mounting groove (104), a moving block (106) is slidably installed through the central position of the surface of the mounting slide bar (105), and the surfaces of the mounting slide bar (105) on both sides of the moving block (106) are respectively sleeved with return springs (107), a connecting strip (108) is fixedly installed between the two moving blocks (106) on the same side of the inner wall of the dustproof screening box (1), and the two ends of the connecting strip (108) are slidably connected to the inside of the rectangular slide groove (103), one end of the connecting strip (108) is penetrated by a fixed socket (109), and the opposite sides of the two connecting strips (108) are respectively provided with positioning slots (110).

4. The dust-proof ore crusher capable of multi-stage screening according to claim 3, characterized in that: Positioning inserts (201) are fixedly mounted on both sides of the first-level screening frame (2), and the positioning inserts (201) are inserted into the interior of the positioning slots (110). A connecting slot (202) is provided at a central position on one side of the first-level screening frame (2) perpendicular to the positioning inserts (201). Connecting studs (203) are fixedly mounted on both ends of the interior of the connecting slot (202), and connecting nuts (204) are threadedly connected to the surfaces of the connecting studs (203).

5. The dust-proof ore crusher capable of multi-stage screening according to claim 1, characterized in that: The interior of the mounting bar (4) is provided with a mounting hole (401), one end of the mounting hole (401) located inside the mounting bar (4) is connected to a movable groove (402), a fixed plug rod (403) is slidably installed inside the mounting hole (401), and one end of the fixed plug rod (403) passes through the mounting hole (401) and extends to the outside of the mounting bar (4), and a limiting plate (404) is fixedly installed on the surface of one end of the fixed plug rod (403) located inside the mounting hole (401), and the fixed plug rod ( The surface of the fixing rod (403) located inside the mounting hole (401) is sleeved with a fixing spring (405), and the end of the fixing rod (403) away from the limiting plate (404) passes through the mounting hole (401) and extends to the inside of the movable groove (402), and the end of the fixing rod (403) located inside the movable groove (402) is fixedly installed with a moving screw (406), and the moving screw (406) passes through the movable groove (402) and extends to the surface outside the mounting bar (4) and is threadedly connected with a fixing nut (407).

6. The dust-proof ore crusher capable of multi-stage screening according to claim 1, characterized in that: Two crushing rollers (501) are rotatably mounted inside the crushing box (5) via bearings, and the two crushing rollers (501) are meshed with each other. One end of the two crushing rollers (501) passes through the crushing box (5) and extends to the outside of the crushing box (5), where a driven gear (502) and a driving gear (503) are fixedly mounted. The driven gear (502) and the driving gear (503) are meshed with each other. A crushing motor (504) is fixedly mounted on the bottom of the crushing box (5) away from the driving gear (503), and the output end of the crushing motor (504) is fixedly connected to one of the crushing rollers (501). Dustproof covers (505) are fixedly mounted on both sides of the bottom of the crushing box (5), and the dustproof covers (505) are fixedly mounted on the top of the dustproof screening box (1).

7. The dust-proof ore crusher capable of multi-stage screening according to claim 4, characterized in that: The vibration mechanism (6) includes a support plate (601), the number of the support plates (601) is four, and two support plates (601) form a group, a crankshaft (602) is rotatably mounted between the support plates (601) of each group through a bearing, and the ends of the two crankshafts (602) close to each other pass through the support plate (601) for fixed connection, a connecting strip (603) is rotatably mounted on the surface of the crankshaft (602), and a connecting seat (604) is rotatably mounted on the end of the connecting strip (603) away from the crankshaft (602) through a pin, and the connecting seat (604) is plugged into The connecting slot (202) is connected inside, and the connecting studs (203) pass through both sides of the connecting seat (604). The top of the crankshaft (602) is fixedly installed with a connecting rod (605). The top of the connecting rod (605) is fixedly installed with a bevel gear 1 (606). The surface of the bevel gear 1 (606) is meshed with a bevel gear 2 (607). A rotating motor (608) is provided on one side of the bevel gear 2 (607), and the output end of the rotating motor (608) is fixedly connected to the bevel gear 2 (607). The rotating motor (608) is fixedly connected to the top of one side of the dustproof screening box (1).

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