Iron ore raw material crushing and screening equipment

Abstract

The utility model belongs to the field of iron ore processing, particularly relates to iron ore raw material crushing and screening equipment, and aims to solve the problems that the existing raw materials subjected to secondary crushing need to be conveyed to a screening device for screening through a transmission belt, and then unqualified raw materials are conveyed to a previous or additional crusher for crushing through the transmission belt again. In practice, it is found that the occupied area can be greatly increased, and additional equipment can cause the problems that the cost is increased and the efficiency is reduced, the following scheme is put forward: a conical crusher is provided, and the top of the conical crusher is provided with a feed hopper; and the screening assembly is used for screening the crushed raw materials, the screening assembly is arranged below the conical crusher, after the raw materials subjected to preliminary crushing are conveyed into the conical crusher, screening can be directly conducted, and the unqualified raw materials are conveyed into the conical crusher again through the recycling assembly to be crushed again.

Description

TECHNICAL FIELD

[0001] The utility model relates to iron ore processing technical field especially relates to a kind of iron ore raw material crushing screening equipment. BACKGROUND

[0002] Iron ore processing flow: the ore is uniformly sent into jaw crusher for coarse crushing by conveying belt, then is conveyed to cone crusher for medium crushing, then the raw material after secondary crushing is conveyed to screening device for screening, unqualified raw material is crushed again, and finally is treated by sand washer and other equipment.

[0003] The raw material after secondary crushing needs to be conveyed to screening device for screening by conveying belt, and then unqualified raw material is conveyed to the last or additional pulverizer for crushing, which greatly increases the floor area and increases the cost and reduces the efficiency of additional equipment. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings that the prior art can greatly increase the floor area and increase the cost and reduce the efficiency of additional equipment, and provides an iron ore raw material crushing screening equipment.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] An iron ore raw material crushing screening equipment includes a cone pulverizer, and a feed hopper is arranged at the top of the cone pulverizer.

[0007] A screening assembly is used for screening the crushed raw material, and the screening assembly is arranged below the cone pulverizer. The screening assembly includes a screening cylinder and a screen mesh. The screening cylinder is installed at the bottom of the cone pulverizer, and the screen mesh is slidingly arranged in the screening cylinder.

[0008] A recycling assembly is used for conveying unqualified raw material to the inside of the cone pulverizer. The recycling assembly is arranged on one side of the screening cylinder. The recycling assembly includes a recycling box and multiple recycling members. The bottom of one side of the recycling box is connected to the screening cylinder. An outlet is formed in one side of the outer wall of the recycling box, and the outlet is above the feed hopper. A support plate is fixedly arranged on the inner wall of the recycling box. Two rotating shafts are rotatably arranged in the recycling box, and the two rotating shafts are above and below the support plate, respectively. A chain wheel is fixedly arranged on the outer wall of the rotating shaft, and multiple chain wheels are drivingly sleeved with the same chain conveyor belt. The support plate is inside the chain conveyor belt, and the multiple recycling members are arranged on the outer wall of the chain conveyor belt.

[0009] In a possible design, the recycling member includes a mounting plate and a rotating plate, the mounting plate is fixedly arranged on the surface of the chain conveyor, and the rotating plate is rotatably arranged on one side of the mounting plate.

[0010] In a possible design, the recycling member further includes two L-shaped insertion rods, both sides of the interior of the mounting plate are provided with sliding cavities, the two L-shaped insertion rods are slidingly arranged in the interiors of the two sliding cavities, both sides of the rotating plate are provided with insertion grooves, one end of the L-shaped insertion rod slidingly penetrates the mounting plate and is inserted into the corresponding insertion groove, one end of the L-shaped insertion rod is provided with a groove, the interior of the insertion groove is fixedly provided with an insertion plate, and the groove is matched with the insertion plate on the same side, and the interior of the sliding cavity is provided with a first compression spring, and both ends of the first compression spring are fixedly arranged on the inner wall of one side of the sliding cavity and one side of the L-shaped insertion rod.

[0011] In a possible design, the recycling assembly further includes two inclined surface plates, both the inclined surface plates are fixedly arranged on the inner walls of the two sides of the recycling box, both sides of the mounting plate are provided with through holes, and the through holes are in communication with the sliding cavities on the same side, and the L-shaped insertion rod is matched with the inclined surface on the same side of the inclined surface plate.

[0012] In a possible design, the top of the mounting plate is fixedly provided with an upper limiting plate, and the bottom of the mounting plate is fixedly provided with a lower limiting plate, and the upper limiting plate and the lower limiting plate are matched with the rotating plate.

[0013] In a possible design, the bottom inner wall of the discharge port is rotatably provided with a supporting plate, the bottom inner wall of the discharge port is fixedly provided with an abutting plate, and the abutting plate is matched with the supporting plate, and the rotation point of the abutting plate is provided with a torsional spring.

[0014] In a possible design, the screening assembly further includes an eccentric wheel, one side of the outer wall of the screening cylinder is rotatably provided with a rotating rod, the outer wall of the rotating rod and the outer wall of the transmission shaft of the conical crusher are fixedly provided with synchronous wheels, the outer walls of the two synchronous wheels are drivingly provided with the same synchronous belt, the outer wall of the rotating rod is fixedly provided with an eccentric wheel, one side of the outer wall of the screening cylinder is provided with a side hole, one side of the screen is provided with a connecting plate, and the connecting plate extends to the outside through the side hole, the eccentric wheel is matched with the connecting plate, the interior of the side hole is fixedly provided with a limiting rod, and the connecting plate is slidingly provided on the outer wall of the limiting rod, the outer wall of the limiting rod is provided with a second compression spring, and both ends of the second compression spring are fixedly arranged on the bottom of the connecting plate and the bottom inner wall of the side hole.

[0015] In the application, the conveying belt will convey the raw material crushed by the jaw crusher to the upper side of the feed hopper, and then enter the inside of the cone crusher for the next crushing. The raw material crushed twice will fall to the top of the screen, and will drive the rotating rod to rotate through the synchronous wheel and synchronous belt when the transmission shaft of the cone crusher rotates. The rotating rod drives the eccentric wheel to rotate, which will hit the connecting plate to drive the screen to move downward. Then the screen is reset by the No. 2 compression spring to achieve the effect of vibrating screening. The unqualified raw material will enter the inside of the recycling box. The rotating shaft is driven by the servo motor to drive the chain wheel to drive the chain conveyor belt to move. The recycling member on the surface of the chain conveyor belt is driven to move. The plurality of supporting rods of the recycling member will shovel the raw material upward. When the supporting rod touches the supporting plate, the supporting plate will be driven to rotate to make the supporting rod drive the raw material to move upward smoothly. The supporting plate is reset by the torsion spring and abuts against the abutting plate. When the recycling member continues to move upward, the inclined plate will enter the inside of the through hole. The inclined surface of the inclined plate will drive the L-shaped insertion rod to move, so that the L-shaped insertion rod is separated from the insertion slot of the rotating plate. At this time, the rotating plate and the supporting rod will rotate and tilt downward and abut against the lower limit plate. The raw material will also slide into the inside of the feed hopper, so as to re-enter the inside of the cone crusher for crushing again. The supporting plate can prevent the raw material from sliding through the gap between the supporting rod and the inner wall of the recycling box. When the recycling member moves to the other side, the rotating plate will be reversely rotated by the effect of gravity and abut against the upper limit plate to keep the horizontal state with the mounting plate. At this time, the L-shaped insertion rod will be reset by the No. 1 compression spring and re-inserted into the insertion slot to fix the rotating plate. The raw material that passes the crushing will continue to be conveyed to the next link of sand washing operation through the conveying belt at the bottom.

[0016] In the iron ore raw material crushing and screening equipment, the screening assembly and the recycling assembly can directly screen the crushed iron ore raw material, and re-convey the unqualified raw material to the inside of the cone crusher for crushing again, so as to reduce the original land occupation area and equipment cost.

[0017] In the iron ore raw material crushing and screening equipment, the eccentric wheel and the chain conveyor belt can drive the screen to reciprocate, improve the screening effect, and continuously convey the unqualified raw material from the inside of the recycling box to the discharge port, improve the automation degree and working efficiency of the equipment.

[0018] The utility model discloses a kind of iron ore raw material crushing and screening equipment, including cone crusher, screening cylinder, recycling box, feed hopper, discharge port, screen, eccentric wheel, synchronous wheel, synchronous belt, connecting plate, side hole, limit rod, supporting plate, inclined plane plate, pivot, mounting plate, plugboard, L type plug rod, rotating plate, lower limit plate, supporting rod, stop plate, upper limit plate, recess, through-hole, sliding cavity and no. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A kind of iron ore raw material crushing and screening equipment's main body structure schematic diagram is proposed in the utility model;

[0020] Figure 2 A kind of iron ore raw material crushing and screening equipment screening cylinder's section structure schematic diagram is proposed in the utility model;

[0021] Figure 3 A kind of iron ore raw material crushing and screening equipment recycling box's section structure schematic diagram is proposed in the utility model;

[0022] Figure 4 A kind of iron ore raw material crushing and screening equipment is proposed in the utility model Figure 3 The structure enlarged view of part A in the utility model;

[0023] Figure 5 A kind of iron ore raw material crushing and screening equipment recycling piece's section structure schematic diagram is proposed in the utility model;

[0024] Figure 6 A kind of iron ore raw material crushing and screening equipment's flow structure schematic diagram is proposed in the utility model.

[0025] In the drawing: 1, cone crusher;2, screening cylinder;3, recycling box;4, feed hopper;5, discharge port;6, screen;7, eccentric wheel;8, synchronous wheel;9, synchronous belt;10, rotating rod;11, connecting plate;12, side hole;13, limit rod;14, supporting plate;15, chain conveyor belt;16, supporting plate;17, inclined plane plate;18, pivot;19, mounting plate;20, plugboard;21, L type plug rod;22, rotating plate;23, lower limit plate;24, supporting rod;25, stop plate;26, upper limit plate;27, recess;28, through-hole;29, sliding cavity;30, no. 1 compression spring. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings of the embodiments of the utility model below, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0027] Example 1

[0028] Referring to Figures 1-2 A broken screening device, comprising: a cone crusher 1, the top of the cone crusher 1 is provided with a feed hopper 4 for adding iron ore raw materials to the inside of the cone crusher 1, and the cone crusher 1 is a common device in the field, such as a single-cylinder cone crusher of the DG series. The screening assembly is used for screening the crushed raw materials, and the screening assembly is arranged below the cone crusher 1 and comprises a screening cylinder 2 and a screen 6. The screening cylinder 2 is installed at the bottom of the cone crusher 1, and the screen 6 is slidably arranged in the inside of the screening cylinder 2. The crushed iron ore raw materials are screened through the screen 6, and the qualified raw materials leak out from the bottom of the screen 6, and the unqualified raw materials remain above the screen 6.

[0029] Referring to Figure 3 The recycling assembly is used for recycling the unqualified raw materials into the inside of the cone crusher 1, and the recycling assembly is arranged on one side of the screening cylinder 2 and comprises a recycling box 3 and a plurality of recycling members. The bottom of one side of the recycling box 3 is communicated with the screening cylinder 2, and a discharge port 5 is formed in one side of the outer wall of the recycling box 3 and is located above the feed hopper 4. The unqualified raw materials fall into the inside of the recycling box 3 from the screening cylinder 2 and are discharged from the discharge port 5 through the recycling assembly and then enter the cone crusher 1 again for crushing. A support plate 16 is fixedly arranged on the inner wall of the recycling box 3, two rotating shafts 18 are rotatably arranged in the inside of the recycling box 3 and are located above and below the support plate 16 respectively, a chain wheel is fixedly arranged on the outer wall of the rotating shaft 18, a same chain conveyor belt 15 is transmissionally arranged on the outer walls of the plurality of chain wheels, the support plate 16 is located in the inside of the chain conveyor belt 15, and the plurality of recycling members are arranged on the outer wall of the chain conveyor belt 15. The recycling members are driven to move by the rotation of the chain conveyor belt 15, so as to convey the unqualified raw materials from the bottom of the recycling box 3 to the discharge port 5.

[0030] Referring to Figures 4-5 The recycling member comprises an installation plate 19 and a rotating plate 22. The installation plate 19 is fixedly arranged on the surface of the chain conveyor belt 15, and the rotating plate 22 is rotatably arranged on one side of the installation plate 19. A plurality of supporting rods 24 are fixedly arranged on one side of the rotating plate 22. The unqualified raw materials are conveyed upward by the supporting rods 24 after entering the inside of the recycling box 3 and are finally discharged from the discharge port 5.

[0031] The recycling part further comprises two L-shaped insertion rods 21, two slide cavities 29 are formed on the two sides of the inside of the mounting plate 19, the two L-shaped insertion rods 21 are respectively slidably arranged in the two slide cavities 29, two insertion slots are formed on the two sides of the rotating plate 22, one end of the L-shaped insertion rod 21 slidably penetrates the mounting plate 19 and is inserted into the corresponding insertion slot, a groove 27 is formed on one end of the L-shaped insertion rod 21, an insertion plate 20 is fixedly arranged in the inside of the insertion slot, and the groove 27 is matched with the insertion plate 20 on the same side, so that the rotating plate 22 is fixed and cannot rotate, a first compression spring 30 is arranged in the inside of the slide cavity 29, and the two ends of the first compression spring 30 are respectively fixedly arranged on the side wall of the slide cavity 29 and the side of the L-shaped insertion rod 21, and the L-shaped insertion rod 21 is inserted into the inside of the insertion slot by the elastic force of the first compression spring 30.

[0032] The recycling assembly further comprises two inclined plates 17, the two inclined plates 17 are respectively fixedly arranged on the two side walls of the recycling box 3, a through hole 28 is formed on the two sides of the mounting plate 19, the through hole 28 is communicated with the slide cavity 29 on the same side, the L-shaped insertion rod 21 is matched with the inclined surface of the inclined plate 17 on the same side, when the chain conveying belt 15 drives the mounting plate 19 to move to the side of the inclined plate 17, the L-shaped insertion rod 21 is in contact with and pressed by the inclined surface of the inclined plate 17, so that the L-shaped insertion rod 21 moves to the inside of the slide cavity 29 until it is separated from the clamping groove, so that the fixing state of the rotating plate 22 is released.

[0033] Specific, the conveyor belt will be through the jaw crusher broken after the raw materials to the top of the hopper 4, and then enter the inside of the cone crusher 1 to the next step of crushing, the secondary crushed raw materials will fall to the top of the screen 6, unqualified raw materials will enter the inside of the recycling box 3, the shaft 18 is driven by a servo motor, so as to drive the chain conveyor belt 15 through the sprocket, the chain conveyor belt 15 drives the surface of the recycling member to move, the plurality of support rods 24 of the recycling member will shovel the raw materials up, when touching the supporting plate 14, the supporting plate 14 will be pushed to rotate so that the support rod 24 can drive the raw materials smoothly upward, the supporting plate 14 is reset by the torsion spring and abuts against the abutting plate 25, then the recycling member continues to move upward, the inclined plate 17 will enter the inside of the through hole 28, the inclined surface of the inclined plate 17 will push the L-shaped inserting rod 21 to move, so that the L-shaped inserting rod 21 is separated from the inserting slot of the rotating plate 22, at this time the rotating plate 22 and the support rod 24 will rotate and tilt downward and abut against the lower limit plate 23, the raw materials will also slide into the inside of the hopper 4, so that it reenters the inside of the cone crusher 1 to be crushed again, and the supporting plate 14 can prevent the raw materials from sliding through the gap between the support rod 24 and the inner wall of the recycling box 3, then the recycling member is moved to the other side, the rotating plate 22 will be reversely rotated by the influence of gravity and abut against the upper limit plate 26 to keep the horizontal state with the mounting plate 19, at this time the L-shaped inserting rod 21 will be reset by the No. 1 compression spring 30 to be reinserted into the slot to fix the rotating plate 22, the qualified crushed raw materials will continue to be conveyed to the next link of sand washing operation through the bottom conveyor belt.

[0034] The present application can be used in the field of iron ore processing, and can also be used in other fields applicable to the present application.

[0035] Example 2

[0036] Reference Figure 2On the basis of embodiment 1, an iron ore raw material crushing and screening device is improved, which is applied to the field of iron ore processing, the screening assembly further comprises an eccentric wheel 7, a rotating rod 10 is rotatably arranged on one side of the outer wall of the screening cylinder 2, the outer wall of the rotating rod 10 and the outer wall of the transmission shaft of the conical crusher 1 are both fixedly sleeved with a synchronous wheel 8, the outer walls of the two synchronous wheels 8 are drivingly sleeved with a same synchronous belt 9, the synchronous wheel 8 and the synchronous belt 9 are driven to rotate by the rotation of the transmission shaft of the conical crusher 1, and then the rotating rod 10 is driven to rotate, the outer wall of the rotating rod 10 is fixedly sleeved with the eccentric wheel 7, a side hole 12 is formed on one side of the outer wall of the screening cylinder 2, a connecting plate 11 is arranged on one side of the screen 6 and extends to the outside through the side hole 12, the eccentric wheel 7 cooperates with the connecting plate 11, the connecting plate 11 is impacted by the rotation of the eccentric wheel 7, and then the screen 6 is driven to vibrate in the screening cylinder 2, so that the effect of vibrating screening is realized. The inside of the side hole 12 is fixedly provided with a limiting rod 13, the connecting plate 11 is slidingly sleeved on the outer wall of the limiting rod 13, a No. 2 compression spring is sleeved on the outer wall of the limiting rod 13, and the two ends of the No. 2 compression spring are fixedly arranged on the bottom of the connecting plate 11 and the inner wall of the bottom of the side hole 12 respectively, and the connecting plate 11 and the screen 6 are reset by the elastic force of the No. 2 compression spring.

[0037] The transmission shaft of the conical crusher 1 and the rotating shaft 18 are both driven by existing driving members, such as a servo motor and the like.

[0038] However, as known by those skilled in the art, the working principle and wiring method of the conical crusher 1 are common, which both belong to conventional means or common general knowledge, and will not be described here again, and those skilled in the art can make any selection or change according to their needs or convenience.

[0039] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the technical field can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An iron ore feed material crushing and screening plant characterised in that, Include: Cone crusher (1), the top of the cone crusher (1) is provided with a feed hopper (4); Screening assembly for screening the crushed raw materials, the screening assembly is arranged below the cone crusher (1), the screening assembly comprises a screening cylinder (2) and a screen (6), the screening cylinder (2) is installed at the bottom of the cone crusher (1), and the screen (6) is slidably arranged in the screening cylinder (2); The recycling assembly is arranged on one side of the screening cylinder (2), the recycling assembly comprises a recycling box (3) and a plurality of recycling members, the bottom of one side of the recycling box (3) is communicated with the screening cylinder (2), a discharge port (5) is formed in one side of the outer wall of the recycling box (3), the discharge port (5) is located above the feed hopper (4), a supporting plate (16) is fixedly arranged on the inner wall of the recycling box (3), two rotating shafts (18) are rotatably arranged in the recycling box (3), and the two rotating shafts (18) are located above and below the supporting plate (16) respectively, chain wheels are fixedly arranged on the outer wall of the rotating shaft (18), a chain conveyor belt (15) is transmissionally arranged on the outer wall of the plurality of chain wheels, the supporting plate (16) is located in the chain conveyor belt (15), and the plurality of recycling members are arranged on the outer wall of the chain conveyor belt (15).

2. An iron ore feed material crushing and screening apparatus according to claim 1, characterised in that, The recycling member comprises a mounting plate (19) and a rotating plate (22), the mounting plate (19) is fixedly arranged on the surface of the chain conveyor belt (15), and the rotating plate (22) is rotatably arranged on one side of the mounting plate (19).

3. An iron ore feed material crushing and screening apparatus according to claim 2, characterised in that, The recycling member further comprises two L-shaped insertion rods (21), sliding cavities (29) are formed in the two sides of the mounting plate (19), the two L-shaped insertion rods (21) are slidably arranged in the two sliding cavities (29) respectively, insertion grooves are formed in the two sides of the rotating plate (22), one end of the L-shaped insertion rod (21) slidably penetrates the mounting plate (19) and is inserted into the corresponding insertion groove, a recess (27) is formed in one end of the L-shaped insertion rod (21), an insertion plate (20) is fixedly arranged in the insertion groove, and the recess (27) is matched with the insertion plate (20) on the same side, a first compression spring (30) is arranged in the sliding cavity (29), and the two ends of the first compression spring (30) are fixedly arranged on the inner wall of one side of the sliding cavity (29) and one side of the L-shaped insertion rod (21) respectively.

4. An iron ore feed material crushing and screening apparatus according to claim 3, characterised in that, The recycling assembly further comprises two inclined plates (17), the two inclined plates (17) are fixedly arranged on the two inner walls of the recycling box (3), through holes (28) are formed in the two sides of the mounting plate (19), the through holes (28) are communicated with the sliding cavities (29) on the same side, and the L-shaped insertion rod (21) is matched with the inclined surface of the inclined plate (17) on the same side.

5. An iron ore feed material crushing and screening apparatus according to claim 4, characterised in that, The top of the mounting plate (19) is fixedly provided with an upper limiting plate (26), and the bottom of the mounting plate (19) is fixedly provided with a lower limiting plate (23); the upper limiting plate (26) and the lower limiting plate (23) are matched with the rotating plate (22).

6. An iron ore feed material crushing and screening apparatus as claimed in claim 1, wherein, The bottom inner wall of the discharge port (5) is rotatably provided with a supporting plate (14), and the bottom inner wall of the discharge port (5) is fixedly provided with an abutting plate (25); the abutting plate (25) is matched with the supporting plate (14); the rotating point of the abutting plate (25) is provided with a torsion spring.

7. An iron ore feed material crushing and screening apparatus as claimed in claim 1, wherein, The screening assembly further comprises an eccentric wheel (7); one side of the outer wall of the screening cylinder (2) is rotatably provided with a rotating rod (10); the outer wall of the rotating rod (10) and the outer wall of the transmission shaft of the conical crusher (1) are both fixedly provided with a synchronous wheel (8); the outer walls of the two synchronous wheels (8) are drivingly provided with the same synchronous belt (9); the outer wall of the rotating rod (10) is fixedly provided with the eccentric wheel (7); one side of the outer wall of the screening cylinder (2) is provided with a side hole (12); one side of the screen (6) is provided with a connecting plate (11), which extends to the outside through the side hole (12); the eccentric wheel (7) is matched with the connecting plate (11); the inside of the side hole (12) is fixedly provided with a limiting rod (13), and the connecting plate (11) is slidingly provided on the outer wall of the limiting rod (13); the outer wall of the limiting rod (13) is provided with a No. 2 compression spring, and the two ends of the No. 2 compression spring are fixedly provided on the bottom of the connecting plate (11) and the bottom inner wall of the side hole (12) respectively.

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