Energy-saving grinding device and method for iron concentrate powder reselection and magnetic separation

Abstract

The application relates to the technical field of mineral processing machinery equipment, and provides an energy-saving grinding device and method for iron concentrate powder gravity separation and magnetic separation, which comprises a bottom plate, a supporting plate one is fixedly installed on the top of the bottom plate, a supporting plate two is fixedly installed on the top of the bottom plate, a motor is fixedly installed at the bottom of the supporting plate two, an output end of the motor is fixedly connected with a rotating rod, the bottom end of the rotating rod is fixedly connected with a reciprocating wire rod one, a limiting rod one is fixedly connected to one side of the supporting plate two through a long strip, in the embodiment of the application, the rotation of a grinding disc two is in contact with the bottom of a grinding disc one, so that the iron concentrate powder can be ground, the disc is driven to move up and down by a sliding mechanism, so that the grinding disc one at the bottom is driven to move up and down, at the moment, the grinding disc one is in contact with the grinding disc two and continues to move downward under the elastic limiting of the spring two and the limiting telescopic rod, and the reciprocating up-and-down movement of the grinding disc one can improve the grinding efficiency of the iron concentrate powder.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mineral processing machinery equipment, and in particular to an iron concentrate powder reselection and magnetic separation energy-saving grinding device and method. BACKGROUND

[0002] Iron ore usually needs to go through coarse selection, magnetic separation and fine grinding in the mineral processing process to obtain iron concentrate powder with uniform particle size and high grade. The traditional concentrate grinding equipment generally uses multiple driving units to control the grinding disc, discharge mechanism and screening device, which has a complex structure, high assembly cost, high energy consumption of multiple motors working simultaneously during equipment operation, and high maintenance difficulty.

[0003] In the prior art, although some grinding devices realize the basic grinding function, there are often the following shortcomings: each functional module (grinding, discharging and screening) relies on an independent power source, resulting in a complicated overall structure and low energy efficiency; the discharging mode is mostly continuous discharging, lacking a reasonable intermittent control mechanism, which is prone to material accumulation or poor discharging; the screening structure generally uses a simple fixed screen or unidirectional vibration, which is difficult to adapt to the screening requirements of iron concentrate powder with large particle size difference; and there is a lack of effective linkage between the mechanisms, resulting in low overall operation efficiency of the equipment and inability to realize efficient continuous operation. SUMMARY

[0004] The present application aims to solve the problems in the prior art that grinding, discharging and screening rely on independent power sources, resulting in a complicated overall structure and low energy efficiency; the discharging mode is mostly continuous discharging, lacking a reasonable intermittent control mechanism, which is prone to material accumulation or poor discharging; the screening structure generally uses a simple fixed screen or unidirectional vibration, which is difficult to adapt to the screening requirements of iron concentrate powder with large particle size difference; and there is a lack of effective linkage between the mechanisms, resulting in low overall operation efficiency of the equipment and inability to realize efficient continuous operation.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: an iron concentrate powder reselection and magnetic separation energy-saving grinding device and method, comprising: a bottom plate, a support plate one is fixedly installed on the top of the bottom plate, a support plate two is fixedly installed on the top of the bottom plate, a motor is fixedly installed at the bottom of the support plate two, a rotating rod is fixedly connected to the output end of the motor, a reciprocating screw rod one is fixedly connected to the bottom end of the rotating rod, a limiting rod one is fixedly connected to one side of the support plate two through a long strip, a sliding mechanism is movably sleeved on the outer surface of the reciprocating screw rod one and the limiting rod one, a disc is fixedly installed at the bottom of the sliding mechanism through an L-shaped strip, a plurality of springs two are fixedly installed at the bottom of the disc, a plurality of limiting telescopic rods are fixedly installed at the bottom of the disc, and a grinding disc one is fixedly installed at the bottom of the limiting telescopic rods.

[0006] The technical effect of the further scheme is that the rotation of the grinding disc two contacts the bottom of the grinding disc one to grind the iron powder, the disc moves up and down under the driving of the sliding mechanism, thereby driving the grinding disc one to move up and down, and the grinding disc one continues to move downward after contacting the grinding disc two under the elastic limiting of the spring two and the limiting telescopic rod, and the reciprocating movement of the grinding disc one can improve the grinding efficiency of the iron powder.

[0007] As a preferred embodiment, the outer surface of the support plate two is fixedly provided with a grinding tank, the grinding disc one is located in the interior of the grinding tank, the output end of the motor is movably provided with a belt one through a belt pulley, and one end of the belt one is movably provided with a linkage rod through a belt pulley.

[0008] The technical effect of the further scheme is that when the motor drives the rotating rod to rotate, the belt one is driven to move through the belt pulley, the linkage rod is driven to rotate through the belt pulley, the belt two is driven to move through the belt pulley on the outer surface of the linkage rod, the reciprocating screw rod two is driven to rotate through the belt pulley, the reciprocating screw rod two is embedded in the bottom of the inner wall of the grinding tank through the bearing, the grinding disc two at the top end is driven to rotate through the rotating rod, and the iron powder is ground through the knocking block at the top of the grinding disc one.

[0009] As a preferred embodiment, the bottom end of the linkage rod is movably provided with the belt two through a belt pulley, one end of the belt two is movably provided with a short rod through a belt pulley, the top end of the short rod is fixedly connected with the reciprocating screw rod two, the top end of the reciprocating screw rod two is connected with the grinding disc two through a rotating rod, the grinding disc two is located directly below the grinding disc one, and the bottom of the grinding disc two is provided with a discharging hole.

[0010] The technical effect of the further scheme is that the grinding disc two drives the discharging hole to rotate, the iron powder in the interior of the grinding tank is discharged into the interior of the discharging hole through the discharging hole when the discharging hole is located directly above the discharging hole, and the linkage rod is discharged, and the grinding disc two is discharged once every rotation.

[0011] As a preferred embodiment, the top of the grinding disc one is provided with a knocking block, the bottom of the grinding disc two is provided with a discharging hole, the reciprocating screw rod two penetrates through the bottom of the inner wall of the grinding tank through a bearing, the bottom of the grinding tank is provided with a discharging hole, the outer surface of the reciprocating screw rod two is movably provided with a ring, and the outer surface of the ring is fixedly connected with a blocking plug through a flat strip.

[0012] The technical effects of the further scheme are that the outer surface of the reciprocating wire rod II drives the blocking plug to move up and down on the outer surface of the limiting rod II, the blocking plug can block the inside of the discharging hole when moving, the discharging hole is intermittently opened and closed, the grinding powder enters the surface of the inclined plate intermittently through the discharging hole, and the grinding powder slides to the upper surface of the screen through the inclined plate.

[0013] As a preferred embodiment, the grinding tank is fixedly connected with a plurality of limiting rods II near the bottom of the discharging hole, the blocking plug slides on the outer surface of the plurality of limiting rods II, the blocking plug is movably embedded in the inside of the discharging hole, the outer surface of the bottom plate is fixedly connected with a plurality of limiting plates, opposite outer surfaces of the plurality of limiting plates are provided with a plurality of vertical grooves, the plurality of limiting plates are fixedly installed with springs I near the inner walls of the plurality of vertical grooves, and the top of the plurality of springs I is fixedly installed with a screen.

[0014] The technical effects of the further scheme are that the upper and lower movements of the circular ring drive the knocking block to move up and down through the connecting strip, the knocking block reciprocally impacts the upper surface of the screen, the screen moves up and down in the vertical groove under the limitation of the spring I, the spring I limits the screen to reset, the knocking block reciprocally impacts the surface of the screen, and the screen vibrates to screen the iron powder.

[0015] As a preferred embodiment, the screen slides in the plurality of vertical grooves, the outer surface of the circular ring is fixedly installed with a knocking block through an L-shaped strip, the knocking block is in contact with the top of the screen, the supporting plate II is fixedly installed with an inclined plate near one side of the screen, and the inclined plate is located directly below the limiting rod II.

[0016] The technical effects of the further scheme are that the inclined plate is arranged to prevent the iron powder from entering the upper surface of the belt II and affecting the operation of the belt II.

[0017] An iron powder re-election magnetic separation energy-saving grinding method

[0018] S1: an external power source starts the motor, iron powder is poured into the inside of the grinding tank, the motor drives the rotating rod to rotate, the rotating rod drives the reciprocating wire rod I to rotate, the sliding mechanism slides on the outer surfaces of the limiting rod I and the reciprocating wire rod I under the limitation of the limiting rod I, the sliding mechanism drives the circular disc at the bottom to reciprocally move up and down, the motor drives the rotating rod to rotate, the belt I is driven to move through the belt pulley, the belt I drives the connecting rod to rotate through the belt pulley, the connecting rod drives the belt II to move through the outer surface of the belt pulley, the belt II drives the reciprocating wire rod II to rotate through the belt pulley, the reciprocating wire rod II drives the grinding disc II at the top to rotate through the rotating rod, the iron powder enters the middle of the grinding disc I and the grinding disc II through the knocking block at the top of the grinding disc I, and then the rotation of the grinding disc II is in contact with the bottom of the grinding disc I to grind the iron powder.

[0019] S2: the grinding disc two drives the discharging hole to rotate, and each time the discharging hole is rotated to the top of the discharging hole, the iron powder in the grinding tank is discharged into the interior of the discharging hole through the discharging hole, and is discharged out through the linkage rod, and the grinding disc two is discharged once per rotation, and the outer surface of the reciprocating screw rod two drives the blocking plug to move up and down on the outer surface of the limiting rod two, the blocking plug can block the interior of the discharging hole when moving, so that the discharging hole is intermittently opened and closed, and the grinding powder is intermittently discharged into the surface of the inclined plate through the discharging hole;

[0020] S3: the iron powder is slid onto the upper surface of the screen through the inclined plate, and the upper and lower movement of the circular ring drives the knocking block to move up and down through the connecting strip, the knocking block reciprocally strikes the upper surface of the screen, the screen moves up and down in the vertical groove under the limitation of the spring one, the spring one limits the screen to be reset, and the knocking block reciprocally strikes the surface of the screen, so that the screen vibrates and the iron powder is screened.

[0021] Compared with the prior art, the advantages and positive effects of the present application are that,

[0022] 1: in the embodiment of the present application, the motor is started through an external power supply, and the iron powder is poured into the interior of the grinding tank, at this time, the motor drives the rotating rod to rotate, the rotating rod drives the reciprocating screw rod one to rotate, at this time, the sliding mechanism slides on the outer surfaces of the limiting rod one and the reciprocating screw rod one under the limitation of the limiting rod one, at this time, the sliding mechanism drives the bottom disc to reciprocally move up and down, when the motor drives the rotating rod to rotate, the belt one is driven to move through the belt pulley, at this time, the linkage rod is driven to rotate through the belt pulley, at this time, the belt two is driven to move through the belt pulley, at this time, the reciprocating screw rod two is driven to rotate through the belt pulley, at this time, the reciprocating screw rod two is embedded in the bottom of the inner wall of the grinding tank through the bearing, the reciprocating screw rod two drives the top grinding disc two to rotate through the rotating rod, the iron powder enters the middle of the grinding disc one and the grinding disc two through the knocking block on the top of the grinding disc one, then the grinding disc two is in contact with the bottom of the grinding disc one, so that the iron powder is ground, the disc moves up and down under the driving of the sliding mechanism, so as to drive the bottom grinding disc one to move up and down, at this time, the grinding disc one and the grinding disc two are in contact under the elastic limitation of the spring two and the limiting telescopic rod, and then the grinding disc one continues to move downward, the reciprocating movement of the grinding disc one can improve the grinding efficiency of the iron powder.

[0023] 2、The embodiment of the application, grinding disc two in rotation, driving the discharge hole rotates, whenever the discharge hole rotates to the top of the discharge hole, the inside of the grinding tank after the grinding of the iron powder flows into the inside of the discharge hole through the discharge hole, through the linkage rod, it will flow out once every turn, at the same time, reciprocating screw rod two rotates, the outer surface of the ring drives the stopper to move up and down on the outer surface of the limiting rod two, when moving, the stopper can block the inside of the discharge hole, so that the discharge hole is intermittently opened and closed, the grinding powder is intermittently entered into the surface of the inclined plate through the discharge hole, and falls to the upper surface of the screen through the inclined plate.

[0024] 3、The embodiment of the application, the connecting strip drives the knocking block to move up and down, the knocking block reciprocatingly strikes the upper surface of the screen, the screen moves up and down in the vertical groove under the limiting of spring one, the elastic force of spring one limits the screen, so that the screen resets, the knocking block reciprocatingly strikes the surface of the screen, so that the screen vibrates, the iron powder can be screened, the larger particles stay on the upper surface of the screen, and the smaller particles are screened to the bottom of the screen for collection, improving the grinding quality of the iron powder. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A three-dimensional structure schematic diagram of the iron powder re-election magnetic separation energy-saving grinding device and method is provided.

[0026] Figure 2 A grinding tank internal structure schematic diagram of the iron powder re-election magnetic separation energy-saving grinding device and method is provided.

[0027] Figure 3 A grinding tank bottom structure schematic diagram of the iron powder re-election magnetic separation energy-saving grinding device and method is provided.

[0028] Figure 4 A grinding disc two structure schematic diagram of the iron powder re-election magnetic separation energy-saving grinding device and method is provided.

[0029] Figure 5 A grinding disc one and grinding disc two connection structure schematic diagram of the iron powder re-election magnetic separation energy-saving grinding device and method is provided.

[0030] Figure 6 An enlarged sliding mechanism structure schematic diagram of the iron powder re-election magnetic separation energy-saving grinding device and method is provided.

[0031] Figure 7 A side view plane structure schematic diagram of the iron powder re-election magnetic separation energy-saving grinding device and method is provided.

[0032] Figure 8A top view structure schematic diagram of an iron concentrate powder reselection magnetic separation energy-saving grinding device and method provided by the application.

[0033] Legend:

[0034] 101, bottom plate; 102, limiting plate; 103, spring one; 104, bundle vertical groove; 105, screen; 106, support plate one; 107, support plate two; 108, motor; 109, rotating rod; 110, limiting rod one; 111, reciprocating screw rod one; 112, sliding mechanism; 113, disc; 114, spring two; 115, limiting telescopic rod; 116, grinding disc one; 117, grinding tank; 118, grinding disc two; 119, belt one; 120, linkage rod; 121, belt two; 123, short rod; 124, reciprocating screw rod two; 125, circular ring; 126, limiting rod two; 127, material blocking plug; 128, discharge hole; 129, inclined plate; 130, discharging hole; 131, knocking block. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0036] Please refer to Figures 1 to 8 The embodiment provides a technical solution: an iron concentrate powder reselection magnetic separation energy-saving grinding device and method, which comprises a bottom plate 101, a support plate one 106 fixedly installed at the top of the bottom plate 101, a support plate two 107 fixedly installed at the top of the bottom plate 101, a motor 108 fixedly installed at the bottom of the support plate two 107, a rotating rod 109 fixedly connected to the output end of the motor 108, a reciprocating screw rod one 111 fixedly connected to the bottom end of the rotating rod 109, a limiting rod one 110 fixedly connected to one side of the support plate two 107 through a long strip, a sliding mechanism 112 movably sleeved with the outer surface of the reciprocating screw rod one 111, a disc 113 fixedly installed at the bottom of the sliding mechanism 112 through an L-shaped strip, a plurality of spring two 114 fixedly installed at the bottom of the disc 113, a plurality of limiting telescopic rods 115 fixedly installed at the bottom of the disc 113, and a grinding disc one 116 fixedly installed at the bottom of the plurality of limiting telescopic rods 115.

[0037] In use, the rotation of the second grinding disc 118 and its contact with the bottom of the first grinding disc 116 can grind iron concentrate. The disc 113 moves up and down under the drive of the sliding mechanism 112, thereby driving the first grinding disc 116 at the bottom to move up and down. At this time, under the elastic limit of the second spring 114 and the limiting telescopic rod 115, the first grinding disc 116 contacts the second grinding disc 118 and continues to move downward. The first grinding disc 116 moves up and down repeatedly, which can improve the grinding efficiency of iron concentrate.

[0038] like Figures 1 to 8 As shown, in one embodiment, a grinding jar 117 is fixedly installed on the outer surface of the support plate 2 107. A grinding disc 116 is located inside the grinding jar 117. The output end of the motor 108 is movably fitted with a belt 119 via a pulley. One end of the belt 119 is movably fitted with a linkage rod 120 via a pulley. When the motor 108 drives the rotating rod 109 to rotate, it simultaneously drives the belt 119 to move via the pulley. At this time, the belt 119 drives the linkage rod 120 to rotate via the pulley. At this time, the linkage rod 120 drives the belt 2 121 to move via the pulley on the outer surface. At this time, the belt 2 121 drives the reciprocating screw 2 124 to rotate via the pulley. At this time, the reciprocating screw 2 124 is embedded in the bottom of the inner wall of the grinding jar 117 via a bearing. The reciprocating screw 2 124 drives the grinding disc 2 118 at the top to rotate via the rotating rod. Iron concentrate enters the middle of the grinding disc 116 and the grinding disc 2 118 through the striking block 131 at the top of the grinding disc 116 to grind it.

[0039] like Figures 1 to 8 As shown, in one embodiment, the bottom end of the linkage rod 120 is movably fitted with a belt 121 via a pulley. One end of the belt 121 is movably fitted with a short rod 123 via a pulley. The top end of the short rod 123 is fixedly connected to a reciprocating screw 124. The top end of the reciprocating screw 124 is connected to a grinding disc 118 via a rotating rod. The grinding disc 118 is located directly below the grinding disc 116. The bottom of the grinding disc 118 has a feeding hole 130. When the grinding disc 118 rotates, it drives the feeding hole 130 to rotate. Whenever the feeding hole 130 rotates to directly above the discharge hole 128, the iron concentrate ground inside the grinding tank 117 flows into the discharge hole 128 through the feeding hole 130 and flows out through the linkage rod 120. The grinding disc 118 will discharge once for every rotation.

[0040] like Figures 1 to 8As shown, in one embodiment, the top of the grinding disc one 116 is provided with a knocking block 131, the bottom of the grinding disc two 118 is provided with a discharging hole 130, the reciprocating wire rod two 124 penetrates through the bottom of the inner wall of the grinding tank 117 through a bearing, the bottom of the grinding tank 117 is provided with a discharging hole 128, the outer surface of the reciprocating wire rod two 124 is movably sleeved with a circular ring 125, the outer surface of the circular ring 125 is fixedly connected with a blocking plug 127 through a flat strip, when the reciprocating wire rod two 124 rotates, the circular ring 125 on the outer surface of the reciprocating wire rod two 124 drives the blocking plug 127 to move up and down on the outer surface of the limiting rod two 126, when moving, the blocking plug 127 can block the inside of the discharging hole 128, so that the discharging hole 128 is intermittently opened and closed, the grinding powder enters the surface of the inclined plate 129 intermittently through the discharging hole 128, and falls to the upper surface of the screen 105 through the inclined plate 129.

[0041] As shown, Figures 1 to 8 In one embodiment, the bottom of the grinding tank 117 is fixedly connected with a plurality of limiting rods two 126 near the discharging hole 128, the blocking plug 127 slides on the outer surface of the plurality of limiting rods two 126, and the blocking plug 127 is movably embedded in the inside of the discharging hole 128. The outer surface of the bottom plate 101 is fixedly connected with a plurality of limiting plates 102 at the top, the opposite outer surfaces of the plurality of limiting plates 102 are provided with a plurality of vertical grooves 104, the inner walls of the plurality of limiting plates 102 near the plurality of vertical grooves 104 are fixedly installed with a plurality of springs one 103, and the top of the plurality of springs one 103 is fixedly installed with a screen 105. When the circular ring 125 moves up and down, the knocking block 131 is driven to move up and down by the connecting strip, the knocking block 131 reciprocally impacts the upper surface of the screen 105, the screen 105 moves up and down in the vertical groove 104 under the limitation of the spring one 103, the elastic force of the spring one 103 limits the screen 105, so that the screen 105 is reset, the knocking block 131 reciprocally impacts the surface of the screen 105, so that the screen 105 vibrates, and the iron concentrate powder can be screened.

[0042] As shown, Figures 1 to 8 In one embodiment, the screen 105 slides in the plurality of vertical grooves 104, the outer surface of the circular ring 125 is fixedly installed with a knocking block 131 through an L-shaped strip, the knocking block 131 is in contact with the top of the screen 105, the inclined plate 129 is fixedly installed on one side of the screen 105 near the supporting plate two 107, and the inclined plate 129 is located directly below the limiting rod two 126. The inclined plate 129 is arranged to prevent the iron concentrate powder from entering the upper surface of the belt two 121 and affecting the operation of the belt two 121.

[0043] An iron concentrate powder reselection and magnetic separation energy-saving grinding method

[0044] S1: the motor 108 is started by an external power supply, and the iron powder is poured into the inside of the grinding tank 117 at the same time, the motor 108 drives the rotating rod 109 to rotate, the rotating rod 109 drives the reciprocating screw rod one 111 to rotate, under the limiting of the limiting rod one 110, the sliding mechanism 112 slides on the outer surface of the limiting rod one 110 and the reciprocating screw rod one 111, the sliding mechanism 112 drives the bottom disc 113 to move up and down reciprocally, when the motor 108 drives the rotating rod 109 to rotate and drives the belt one 119 to move through the belt pulley, the belt one 119 drives the linkage rod 120 to rotate through the belt pulley, the linkage rod 120 drives the belt two 121 to move through the belt pulley on the outer surface, the belt two 121 drives the reciprocating screw rod two 124 to rotate through the belt pulley, the reciprocating screw rod two 124 drives the top grinding disc two 118 to rotate through the rotating rod, the iron powder enters the middle of the grinding disc one 116 and the grinding disc two 118 through the knocking block 131 on the top of the grinding disc one 116, the rotation of the grinding disc two 118 contacts the bottom of the grinding disc one 116 to grind the iron powder;

[0045] S2: the grinding disc two 118 drives the discharging hole 130 to rotate when rotating, whenever the discharging hole 130 rotates to the directly above of the discharge hole 128, the iron powder in the inside of the grinding tank 117 is ground and flows into the inside of the discharge hole 128 through the discharging hole 130, and flows out through the linkage rod 120, the grinding disc two 118 flows out once every rotation, the outer surface of the reciprocating screw rod two 124 drives the blocking plug 127 to move up and down on the outer surface of the limiting rod two 126 when rotating, the blocking plug 127 can block the inside of the discharge hole 128 when moving, so that the discharge hole 128 is intermittently opened and closed, the grinding powder is intermittently entered into the surface of the inclined plate 129 through the discharge hole 128;

[0046] S3: the inclined plate 129 slides to the upper surface of the screen 105, under the up and down movement of the circular ring 125, the knocking block 131 moves up and down through the connecting strip, the knocking block 131 reciprocally hits the upper surface of the screen 105, the screen 105 moves up and down in the inside of the vertical groove 104 under the limiting of the spring one 103, the elastic force of the spring one 103 limits the screen 105 to reset, the knocking block 131 reciprocally hits the surface of the screen 105, so that the screen 105 vibrates to screen the iron powder.

[0047] Working principle: in use, through the external power to start the motor 108, at the same time, the iron powder is poured into the inside of the grinding tank 117, at this time the motor 108 drives the rotating rod 109 to rotate, the rotating rod 109 drives the reciprocating screw rod one 111 to rotate, at this time under the limiting of the limiting rod one 110, the sliding mechanism 112 is slid on the outer surface of the limiting rod one 110 and the reciprocating screw rod one 111, at this time the sliding mechanism 112 drives the bottom disc 113 to move up and down reciprocating, when the motor 108 drives the rotating rod 109 to rotate, at the same time, the belt one 119 is driven to move by the belt pulley, at this time the belt one 119 drives the linkage rod 120 to rotate by the belt pulley, at this time the linkage rod 120 drives the belt two 121 to move by the belt pulley on the outer surface, at this time the belt two 121 drives the reciprocating screw rod two 124 to rotate by the belt pulley, at this time the reciprocating screw rod two 124 is embedded in the bottom of the inner wall of the grinding tank 117 through the bearing, the reciprocating screw rod two 124 drives the top grinding disc two 118 to rotate through the rotating rod, the iron powder enters the middle of the grinding disc one 116 and the grinding disc two 118 through the knocking block 131 on the top of the grinding disc one 116, then the grinding disc two 118 rotates and contacts the bottom of the grinding disc one 116 to grind the iron powder, the disc 113 moves up and down under the driving of the sliding mechanism 112, thereby driving the bottom grinding disc one 116 to move up and down, at this time the grinding disc one 116 and the grinding disc two 118 are in contact and continue to move downward under the elastic limiting of the spring two 114 and the limiting telescopic rod 115, the grinding disc one 116 moves up and down reciprocating, which can improve the grinding efficiency of the iron powder, at the same time, the grinding disc two 118 rotates and drives the discharging hole 130 to rotate, the iron powder in the grinding tank 117 is discharged through the discharging hole 130 into the inside of the discharge hole 128 every time the discharging hole 130 rotates to the top of the discharge hole 128, and then flows out through the linkage rod 120, the grinding disc two 118 flows out once every rotation, at the same time, the outer surface of the annular ring 125 of the reciprocating screw rod two 124 drives the blocking plug 127 to move up and down on the outer surface of the limiting rod two 126, the blocking plug 127 can block the inside of the discharge hole 128 when moving, so that the discharge hole 128 is intermittently opened and closed, the grinding powder enters the surface of the inclined plate 129 intermittently through the discharge hole 128, and then slides to the upper surface of the screen 105 through the inclined plate 129, the knocking block 131 moves up and down under the driving of the connecting strip, the knocking block 131 reciprocatingly strikes the upper surface of the screen 105, the screen 105 moves up and down in the bundle vertical slot 104 under the limiting of the spring one 103, the spring one 103 limits the screen 105 to reset, the knocking block 131 reciprocatingly strikes the surface of the screen 105, so that the screen 105 vibrates to screen the iron powder, the larger particles stay on the upper surface of the screen 105, and the smaller particles are screened to the bottom of the screen 105 for collection, thereby improving the grinding quality of the iron powder.

[0048] The above merely describes the preferred embodiments of the present application, but is not intended to limit the present application in other forms. Any person skilled in the art can make changes or modifications to the above disclosed technical contents into equivalent embodiments with equivalent changes, and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical solution of the present application still falls within the protection scope of the present application.

Claims

1. An energy saving grinding device for the gravity separation and magnetic separation of iron ore fines, comprising: The bottom plate (101) is characterized in that the top of the bottom plate (101) is fixedly installed with a support plate one (106), the top of the bottom plate (101) is fixedly installed with a support plate two (107), the bottom of the support plate two (107) is fixedly installed with a motor (108), the output end of the motor (108) is fixedly connected with a rotating rod (109), the bottom end of the rotating rod (109) is fixedly connected with a reciprocating screw rod one (111), one side of the support plate two (107) is fixedly connected with a limiting rod one (110) through a long strip, the outer surface of the limiting rod one (110) and the reciprocating screw rod one (111) is movably sleeved with a sliding mechanism (112), the bottom of the sliding mechanism (112) is fixedly installed with a plurality of spring two (114) through an L-shaped strip, the bottom of the sliding mechanism (112) is fixedly installed with a plurality of limiting telescopic rods (115), and the bottom of the plurality of limiting telescopic rods (115) is fixedly installed with a grinding disc one (116); The outer surface of the support plate two (107) is fixedly installed with a grinding tank (117), the grinding disc one (116) is located in the interior of the grinding tank (117), the output end of the motor (108) is movably sleeved with a belt one (119) through a belt pulley, and one end of the belt one (119) is movably sleeved with a linkage rod (120) through a belt pulley; The bottom end of the linkage rod (120) is movably sleeved with a belt two (121) through a belt pulley, one end of the belt two (121) is movably sleeved with a short rod (123) through a belt pulley, the top end of the short rod (123) is fixedly connected with a reciprocating screw rod two (124), the top end of the reciprocating screw rod two (124) is connected with a grinding disc two (118) through a rotating rod, the grinding disc two (118) is located directly below the grinding disc one (116), and the bottom of the grinding disc two (118) is provided with a discharging hole (130); The top of the grinding disc one (116) is provided with a feeding hole, the reciprocating screw rod two (124) penetrates through the bottom of the inner wall of the grinding tank (117) through a bearing, the bottom of the grinding tank (117) is provided with a discharging hole (128), the outer surface of the reciprocating screw rod two (124) is movably sleeved with a circular ring (125), and the outer surface of the circular ring (125) is fixedly connected with a blocking plug (127) through a flat strip; the blocking plug (127) is movably embedded in the interior of the discharging hole (128).

2. A device for the energy-efficient grinding of iron ore concentrates, according to claim 1, characterized in that: The bottom of the grinding tank (117) is fixedly connected with a plurality of limiting rods two (126) close to the discharging hole (128), the blocking plug (127) slides on the outer surface of the plurality of limiting rods two (126), and the top of the outer surface of the bottom plate (101) is fixedly connected with a plurality of limiting plates (102).

3. A device for the energy-efficient grinding of iron ore concentrates, according to claim 2, characterized in that: The opposite outer surfaces of the plurality of limiting plates (102) are provided with vertical grooves (104), and the limiting plates (102) below the vertical grooves (104) are fixedly installed with springs (103) through horizontal plates.

4. A device for the energy-efficient grinding of iron ore concentrates, according to claim 3, characterized in that: The screen (105) slides in the plurality of vertical grooves (104), and the outer surface of the circular ring (125) is fixedly installed with a knocking block (131) through an L-shaped strip.

5. A device for the energy-efficient grinding of iron ore concentrates, according to claim 4, characterized in that: The knocking block (131) is in contact with the top of the screen (105).

6. A device for the energy-efficient grinding of iron ore concentrates, according to claim 5, characterized in that: The side of the second supporting plate (107) close to the screen (105) is fixedly installed with an inclined plate (129), and the inclined plate (129) is located directly below the second limiting rod (126).

7. An iron powder reselection magnetic selection energy-saving grinding method, comprising a method of an iron powder reselection magnetic selection energy-saving grinding device according to any one of claims 1-6: S1: Start the motor (108) through an external power supply, and pour the iron powder into the inside of the grinding tank (117) at the same time, the motor (108) drives the rotating rod (109) to rotate, the rotating rod (109) drives the reciprocating screw rod one (111) to rotate, and the sliding mechanism (112) slides on the outer surfaces of the limiting rod one (110) and the reciprocating screw rod one (111) under the limiting of the limiting rod one (110), the sliding mechanism (112) drives the bottom disc (113) to move up and down reciprocally, when the motor (108) drives the rotating rod (109) to rotate, the belt one (119) is driven to move through the belt pulley, the belt one (119) drives the linkage rod (120) to rotate through the belt pulley, the linkage rod (120) drives the belt two (121) to move through the outer surface of the belt pulley, the belt two (121) drives the reciprocating screw rod two (124) to rotate through the belt pulley, the reciprocating screw rod two (124) drives the top grinding disc two (118) to rotate through the rotating rod, the iron powder enters the middle of the grinding disc one (116) and the grinding disc two (118) through the feeding hole on the top of the grinding disc one (116), and the rotation of the grinding disc two (118) contacts the bottom of the grinding disc one (116) to grind the iron powder; S2: The discharge hole (130) is rotated when the grinding disc two (118) rotates, and the iron powder in the grinding tank (117) is flowed into the inside of the discharge hole (128) through the discharge hole (130) when the discharge hole (130) is rotated directly above the discharge hole (128) every time, and is flowed out through the linkage rod (120), the grinding disc two (118) flows out once every rotation, and the outer surface of the reciprocating screw rod two (124) drives the blocking plug (127) to move up and down on the outer surface of the limiting rod two (126) when the reciprocating screw rod two (124) rotates, the blocking plug (127) blocks the inside of the discharge hole (128) when moving, so that the discharge hole (128) is intermittently opened and closed, and the grinding powder is intermittently flowed into the surface of the inclined plate (129) through the discharge hole (128). S3: through the inclined plate (129) slide to the upper surface of the screen (105), the upper and lower movement of the ring (125), through the connection strip drive knock block (131) up and down, knock block (131) reciprocating impact on the upper surface of the screen (105), the screen (105) in the limit of spring one (103) makes the screen (105) in the inside of the beam vertical slot (104) moves up and down, the elastic force of spring one (103) limits the screen (105), so that the screen (105) resets, knock block (131) reciprocating impact on the surface of the screen (105), so that the screen (105) produces vibration, can be screened for iron powder.

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