Ore centrifuge

Abstract

The present application relates to centrifuge technical field, specifically disclose a kind of ore centrifuge, comprising: base, rotary drum, shell and movable plug, the rotary drum has inner wall and outer wall, first cavity is formed between the inner wall and the outer wall, the inner wall of rotary drum is equipped with spiral plate, the spiral groove is formed between the spiral plate adjacent to each other, the spiral groove is equipped with multiple flush ports spaced distribution, the movable plug is slidably fitted in the flush port, the movable plug is equipped with water through hole, the movable plug is equipped with multiple spiral water outlets spaced distribution along circumferential direction at the first end, the movable plug can be axially moved when water through hole is blocked, the water flow sprayed in spiral water outlet can remove the impurities around flush port, cooperate with the high-pressure water flow sprayed in water through hole, so as to prevent flush port from being blocked.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of centrifuges, in particular to an ore centrifuge. BACKGROUND

[0002] Various mineral resources in nature are mixed with gangue and impurities, so people need to separate the ore, gangue and impurities after mining, which is commonly known as ore dressing. As can be seen, ore dressing is a process of separating useful minerals from gangue minerals according to the mineral properties of the ore, mainly the physical, chemical or physical and chemical properties of different minerals, and making various associated useful minerals as far as possible to separate from each other, removing or reducing harmful impurities, in order to obtain the raw materials required for smelting or other industries.

[0003] Ore dressing methods are generally classified as water or air classification, ore washing, heavy medium ore dressing, jigging ore dressing, chute ore dressing, table ore dressing, centrifugal ore dressing and the like. In related technologies, centrifugal ore dressing usually uses a centrifugal ore dressing machine to remove impurities from the ore.

[0004] The centrifugal ore screening machine generally includes a rotating drum, a ore feeding device, an ore discharging device and the like. The rotating drum has a plurality of backflushing water ports on the inner wall. The rotating drum rotates at a high speed with a certain number of revolutions. The ore slurry is fed into the rotating drum by the ore feeding device. The ore slurry rotates at a high speed with the rotating drum. Under the action of centrifugal force, heavy minerals are deposited in the spiral groove on the inner wall of the rotating drum and rotate synchronously with the rotating drum. Light mineral particles rotate with the rotating drum at a certain differential speed and are discharged from the rotating drum along the spiral groove from bottom to top. The water valve at the backflushing water port is opened to flush the mineral particles deposited in the spiral groove to the bottom of the rotating drum. The ore discharging device at the bottom of the rotating drum is opened, and the mineral particles are discharged from the ore discharging device along with the water flow, thereby realizing ore separation.

[0005] When the material contains a large amount of fine particles or sticky substances, these impurities may accumulate at the backflushing water port, causing the backflushing water port to be blocked, so that the backflushing water port cannot flush the mineral particles, and the mineral particles will accumulate in the rotating drum and cannot be discharged, so that normal ore separation cannot be performed.

[0006] Chinese patent application CN107309098A discloses a continuous discharge type centrifugal ore dressing machine. The enrichment cone in this centrifugal ore dressing machine is fixed on the rotating barrel and rotates with the rotating barrel. The enrichment cone and the rotating barrel form a narrow annular water cavity. The backflushing water required by the enrichment cone enters the narrow annular water cavity through a water pipeline, a valve, a water rotating connector and a hollow transmission shaft, and is sprayed from the backflushing water hole at the bottom of the enrichment groove. However, when the rotating barrel rotates, mineral particles and sticky impurities accumulate in the enrichment groove, which easily blocks the backflushing water hole. SUMMARY

[0007] The ore centrifuge is used for solving the problem of the blockage of the water flushing opening in the prior art.

[0008] The ore centrifuge comprises a base, a rotary drum, a shell and a movable plug.

[0009] The base is provided with a driving mechanism at the bottom.

[0010] The rotary drum has an inner wall and an outer wall, and a first cavity is formed between the inner wall and the outer wall, the first cavity is communicated with a water tank, the inner wall of the rotary drum is provided with spiral plates, spiral grooves are formed between the adjacent spiral plates in the up-down direction, a plurality of water flushing openings are arranged in the spiral grooves in a spaced manner, the rotary drum is rotationally connected to the base, the driving mechanism is used for driving the rotary drum to rotate, and the rotary drum is provided with a first discharge opening at the bottom.

[0011] The shell covers the rotary drum, the shell is fixedly connected to the base, a second cavity is formed between the rotary drum and the shell, the shell is provided with a feeding channel at the top end, and the shell is provided with a second discharge opening on the side wall.

[0012] The movable plug is slidably arranged in the water flushing opening, the movable plug is provided with water passing holes arranged in the axial direction, the movable plug has a first end and a second end, the first end is provided with a flange, the second end penetrates through the water flushing opening and extends into the first cavity, the second end is sleeved with a first elastic member, one end of the first elastic member is fixedly connected to the second end, and the other end of the first elastic member is abutted to the outer side of the inner wall of the rotary drum, a plurality of spiral water outlets are arranged on the movable plug close to the first end in a circumferentially spaced manner, the spiral water outlets are in a spiral shape, one end of the spiral water outlets is communicated with the water passing holes, and the other end of the spiral water outlets is communicated with the outside of the movable plug, and the movable plug is movable relative to the water flushing opening in the axial direction.

[0013] Preferably, the flange is provided with a limiting groove, the inner side of the inner wall of the rotary drum is provided with an annular sliding groove, a limiting block is slidably arranged in the limiting groove, the limiting block is an L-shaped block, the bottom surface of the limiting groove is provided with a through hole, and one end of the limiting block extends out of the through hole and is slidably arranged in the annular sliding groove.

[0014] Preferably, a push plate is further arranged, a matching groove is arranged on the inner wall of the water passing hole, the matching groove and the limiting groove are communicated through a connecting groove arranged in the radial direction, the push plate comprises a first plate and a second plate, the first plate and the second plate are arranged in a vertical direction, the first plate is arranged in the matching groove, the second plate is slidably arranged in the connecting groove, the end portion of the second plate extends outwards into the limiting groove, and the first plate is provided with a second elastic member.

[0015] Preferably, the water passage hole is trumpet-shaped and has a large-diameter end and a small-diameter end, the large-diameter end is close to the second end of the movable plug, and the small-diameter end is close to the first end of the movable plug.

[0016] By adopting the technical scheme, the trumpet-shaped water passage hole can increase the pressure of water flow at the first end.

[0017] Preferably, a friction ring is arranged between the first elastic member and the outer side of the inner wall of the rotating drum, one side of the friction ring is fixedly connected with the first elastic member, and the other side is abutted against the outer side of the inner wall of the rotating drum.

[0018] Preferably, the upper end of the spiral plate is provided with a movable plate, one end of the movable plate is rotationally connected with the spiral plate, the other end is connected with the spiral plate through a third elastic member, and the flange of the movable plug is abutted against the movable plate.

[0019] Preferably, the outer circumferential side of the flange is provided with a friction pad.

[0020] Preferably, the outer wall of the movable plug is provided with a first sliding groove which is arranged in the axial direction, the outer wall of the movable plug close to the second end is provided with a second sliding groove, the second sliding groove is an annular groove and is arranged in an inclined manner on the outer wall of the movable plug, one end of the first sliding groove is in communication with the second sliding groove, the inner wall of the rotating drum is provided with a sliding block at the flushing opening, the sliding block is in sliding cooperation with the first sliding groove or the second sliding groove, and the sliding block is movable in the first sliding groove or the second sliding groove.

[0021] Preferably, a partition plate is arranged in the shell, the top surface of the partition plate is an inclined surface, and the bottom end of the inclined surface is flush with the bottom end of the second discharging opening.

[0022] Advantageous effects:

[0023] Under the pushing of water pressure, the movable plug overcomes the elastic force of the first elastic member and moves inward, the spiral water outlet rotates with the inward movement of the movable plug, so that the spiral water outlet is in communication with the outside, water flow can be sprayed from the side of the movable plug through the spiral water outlet and flushes around the flushing opening. Under the pushing of water flow, the water flow pushes the movable plug to rotate when passing through the spiral water outlet, so that the flushing opening around is flushed 360°, preventing the adhesion of sundries to the inner wall of the rotating drum. When the sundries are loosened, the sundries and water flow are sprayed out together under the action of water pressure in the water passage hole, so as to dredge the water passage hole. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic view of the ore centrifuge of embodiment 1 of the present application.

[0025] Figure 2 is a schematic view of the structure of the movable plug of embodiment 1 of the present application.

[0026] Figure 3 is the front view of the movable plug of the embodiment 1 of the present application.

[0027] Figure 4 is the matching diagram of the movable plug and the flushing opening of the embodiment 1 of the present application.

[0028] Figure 5 is the structure diagram of the push plate of the embodiment 1 of the present application.

[0029] Figure 6 is the structure diagram of the flange of the embodiment 1 of the present application.

[0030] Figure 7 is the structure diagram of the spiral water outlet of the embodiment 1 of the present application.

[0031] Figure 8 is the structure diagram of the movable plate of the embodiment 2 of the present application.

[0032] Figure 9 is the front view of the movable plug of the embodiment 2 of the present application.

[0033] Figure 10 is the first and second sliding groove diagram of the embodiment 3 of the present application.

[0034] Figure 11 is the matching diagram of the movable plug of the embodiment 3 of the present application.

[0035] Figure 12 is the rotating diagram of the movable plug of the embodiment 1 of the present application.

[0036] Reference signs:

[0037] 1, base; 2, rotating drum; 21, inner wall; 22, outer wall; 3, outer shell; 4, partition plate; 5, feeding channel; 6, first discharge opening; 7, second discharge opening; 8, transmission shaft; 9, driving shell; 10, motor; 11, spiral plate; 12, movable plug; 1201, water hole; 1202, spiral water outlet; 1203, first elastic member; 1204, friction ring; 1205, limiting block; 1206, first plate; 1207, second plate; 1208, friction pad; 1209, first sliding groove; 1210, second sliding groove; 1211, flange; 13, movable plate; 14, third elastic member; 15, limiting groove; 16, matching groove; 17, connecting groove; 18, annular sliding groove. DETAILED DESCRIPTION

[0038] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0039] Example 1:

[0040] like Figure 1 As shown, the ore centrifuge of this embodiment of the invention includes: a base 1, a drum 2, a shell 3, and a movable plug 12.

[0041] Specifically, the base 1 is provided with a drive mechanism at the bottom, and a drum 2 is rotatably connected to the base 1. The drum 2 has an inner wall 21 and an outer wall 22, and there is a first cavity between the inner wall 21 and the outer wall 22. The bottom of the drum 2 is provided with a first discharge port 6.

[0042] The drive mechanism includes a drive housing 9, a motor 10, and a drive shaft 8. The drive housing 9 is fixed to the bottom of the base 1, and its top is rotatably engaged with the drum 2. The drive shaft 8 is rotatably engaged inside the drive housing 9 and coaxially distributed with the drum 2. The bottom end of the drive shaft 8 extends out of the drive housing 9 and engages with the motor 10 via a pulley. The top end of the drive shaft 8 is fixedly connected to the bottom end of the outer wall 22 of the drum 2, so that the drum 2 is rotated by the drive of the motor 10. There is a gap between the drive shaft 8 and the drive housing 9, forming an annular channel. The annular channel connects to the first cavity. The drive housing 9 is connected to an external water tank through a pipe, allowing water to enter the first cavity through the annular channel.

[0043] The outer shell 3 covers the rotating drum 2, and the outer shell 3 and the rotating drum 2 are coaxial and spaced apart, forming a second cavity between the outer shell 3 and the rotating drum 2. A second discharge port 7 is provided on the side wall of the outer shell 3. A feed channel 5 is provided at the top of the outer shell 3, and the feed channel 5 is located at the axis of the outer shell 3. A partition plate 4 is provided inside the outer shell 3. The top surface of the partition plate 4 is inclined, and the end near the rotating drum 2 is higher than the end near the side wall of the outer shell 3, so that the lightweight particles falling from the top of the rotating drum 2 onto the partition plate 4 can move along the inclined surface to the second discharge port 7.

[0044] The inner wall 21 of the drum 2 is provided with a spiral plate 11, and a spiral groove is formed between adjacent upper and lower spiral plates 11. Multiple flushing ports are provided in the spiral groove at intervals along the spiral groove. The flushing ports are connected to the first cavity, and each flushing port is fitted with a movable plug 12.

[0045] like Figures 2 to 7As shown, the movable plug 12 has a first end and a second end, and a water passage 1201 is arranged at the axis of the movable plug 12, which is in a trumpet shape and has a small-diameter end close to the first end and a large-diameter end close to the second end. The first end of the movable plug 12 is provided with a flange 1211, and the second end extends into the first cavity through the flushing opening. A first elastic member 1203 is fixedly connected to the second end, which is a compression spring, one end of which is fixedly connected to the second end of the movable plug 12, and the other end is fixedly connected with a friction ring 1204, which abuts against the outer side of the inner wall 21 of the rotating drum 2. The water passage 1201 is provided with a plurality of helical water outlets 1202 on the side wall close to the first end, which are evenly distributed in the circumferential direction, and the helical water outlets 1202 are in a helical shape, one end of which is communicated with the water passage 1201, and the other end is communicated with the outside of the movable plug 12.

[0046] When the external water tank supplies water into the first cavity, if a large amount of viscous sundries and mineral particles are gathered near the flushing opening, the movable plug 12 overcomes the elastic force of the first elastic member 1203 and moves inward under the pushing of water pressure, and the helical water outlets 1202 are exposed and communicated with the outside along with the inward movement of the movable plug 12, so that the water passage 1201 can be communicated with the outside through the helical water outlets 1202, and the water in the first cavity can be sprayed into the rotating drum 2 along the water passage 1201 and the helical water outlets 1202. Since the helical water outlets 1202 are in a helical shape, the water flow continuously impacts the side wall of the helical water outlets 1202, so that the movable plug 12 rotates (as shown by the arrow direction) under the impact of the water flow, thereby flushing the surrounding 360° of the flushing opening and preventing the sundries from adhering to the inner wall 21 of the rotating drum 2. Figure 12 Figure 12 Since the water passage 1201 is in a trumpet shape, the water pressure gradually increases in the process of the water flow moving from the second end to the first end of the water passage 1201, and when the sundries around the flushing opening are flushed away by the water sprayed from the helical water outlets 1202, the sundries at the water passage 1201 are flushed away under the action of water pressure, and when the water passage 1201 is unblocked, the elastic force of the first elastic member 1203 is greater than the pressure exerted on the movable plug by the water in the first cavity, so that the movable plug 12 moves outward, the helical water outlets 1202 are retracted into the flushing opening, thereby achieving closure, and the water in the first cavity is sprayed into the rotating drum 2 through the water passage 1201.

[0047] ​The flange 1211 is provided with a plurality of limiting grooves 15 distributed in the circumferential direction, the inner wall 21 of the rotating drum 2 is provided with an annular sliding groove 18 at the position corresponding to the limiting groove 15, the bottom of the limiting groove 15 is provided with a through hole, and the limiting groove 15 is provided with a limiting block 1205, the limiting block 1205 is an L-shaped block, the limiting block 1205 is in sliding fit with the limiting groove 15, and one end of the limiting block 1205 extends out of the limiting groove 15 and is in sliding fit in the annular sliding groove 18. When the movable plug 12 moves inward, the limiting block 1205 can abut against the bottom surface of the limiting groove 15, so that the movable plug 12 is prevented from being separated from the flushing opening.

[0048] The inner wall of the water passage hole 1201 is provided with a matching groove 16 corresponding to the limiting groove 15, each matching groove 16 is communicated with the corresponding limiting groove 15 through a connecting groove 17, and a push plate is matched in the matching groove 16. The push plate comprises a first plate 1206 and a second plate 1207, the first plate 1206 and the second plate 1207 are vertically distributed to form an L-shaped plate, the first plate 1206 is matched in the matching groove 16, the second plate 1207 is in sliding fit in the connecting groove 17, the end of the second plate 1207 is a bevel, and extends into the limiting groove 15. The end surface of the first plate 1206 has an arc corresponding to the water passage hole 1201, the other end surface of the first plate 1206 is elastically connected with the matching groove 16 through a second elastic element, and the second elastic element is a spring. When the water passage hole 1201 is blocked, the piston rod moves inward, so that the bottom surface of the movable plug 12 moves inward and abuts against the limiting block 1205. In the process that the movable plug 12 moves inward, the bevel end of the second rod is in contact with the limiting block 1205, and the limiting block 1205 gradually pushes the bevel end of the second plate 1207 into the connecting groove 17, so that the first plate 1206 extends out of the matching groove 16, and then the stuck sundries in the water passage hole 1201 are loosened. When the movable plug 12 moves outward, the limiting block 1205 is separated from the second plate 1207, the first plate 1206 is retracted into the matching groove 16 under the contraction of the second elastic element, and the bevel end of the second plate 1207 extends into the limiting groove 15.

[0049] According to the ore centrifuge provided by the embodiment of the present application, the ore pulp is poured into the rotating drum 2 from the feeding channel 5, then the driving mechanism drives the rotating drum 2 to rotate, the heavy mineral particles in the ore pulp are gathered in the spiral groove under the action of the centrifugal force and rotate synchronously with the rotating drum 2, the light particles and sundries rotate at different speeds relative to the rotating drum 2 and move from the bottom of the rotating drum 2 to the top end of the rotating drum 2 along the spiral plate 11, then enter the second cavity and are discharged through the second discharge port 7. After the light particles are discharged, the external water tank fills water into the first cavity, the water in the first cavity is sprayed into the inside of the rotating drum through the water passage hole 1201 on the movable plug 12, and the heavy mineral particles are carried to the bottom of the rotating drum 2, the second discharge port 7 at the bottom is opened, and the heavy mineral particles are discharged from the first discharge port 6 along with the water flow.

[0050] Embodiment 2:

[0051] As Figure 8 , Figure 9 shown in the figure, the ore centrifuge of the embodiment of the application is different from that of embodiment 1 in that the upper end of the spiral plate 11 is provided with movable plates 13, and a plurality of movable plates 13 are continuously distributed on the spiral plate 11. One end of the movable plate 13 is rotationally connected with the spiral plate 11, and the other end is connected with the spiral plate 11 through a third elastic member 14. The third elastic member 14 is a compression spring. The outer circumferential side of the flange 1211 is provided with a friction pad 1208, and the friction pad 1208 abuts against the movable plate 13.

[0052] In the initial state, the third elastic member 14 is stretched, and the movable plate 13 is distributed in an upwardly inclined manner. When the movable plug 12 moves inwardly, the friction pad 1208 moves synchronously with the movable plug 12, and the friction pad 1208 exerts a downward pressure on the movable plate 13 in the process of movement, so that the movable plate 13 swings downwardly against the elastic force of the third elastic member 14, thereby causing the movable plate 13 to be inclined downwardly, facilitating the heavy mineral particles accumulated in the spiral groove to fall off, and preventing the heavy mineral particles and impurities from being accumulated near the flushing port to cause the flushing port to be blocked.

[0053] Embodiment 3:

[0054] As Figure 10 , Figure 11 shown in the figure, the ore centrifuge of the embodiment of the application is different from that of embodiment 1 in that the upper end of the spiral plate 11 is provided with movable plates 13, and a plurality of movable plates 13 are continuously distributed on the spiral plate 11. One end of the movable plate 13 is rotationally connected with the spiral plate 11, and the other end is connected with the spiral plate 11 through a third elastic member 14. The third elastic member 14 is a compression spring. The outer circumferential side of the flange 1211 is provided with a friction pad 1208, and the friction pad 1208 abuts against the movable plate 13.

[0055] When the water hole 1201 is blocked, the movable plug 12 moves inward under the action of water pressure, so that the slider moves from the inner end of the first sliding groove 1209 to the outer end of the first sliding groove 1209 and enters the second sliding groove 1210, and abuts against the groove wall of the second sliding groove 1210 close to the second end. The movable plug 12 rotates relative to the rotating drum 2 under the action of the spiral water outlet 1202, so that the slider moves in the second sliding groove 1210, thereby realizing the reciprocating motion of the movable plug 12 at the water flushing hole. The spiral water outlet 1202 will be periodically closed and opened during the reciprocating motion of the movable plug 12, the water flow in the water hole 1201 will be sprayed through the spiral water outlet 1202 when the spiral water outlet 1202 is opened, and will flow back when the spiral water outlet 1202 is closed. The first end of the water hole 1201 will periodically generate water hammer, thereby continuously impacting the impurities blocked in the water hole 1201, further improving the impurity removal effect of the water flow.

[0056] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0057] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0058] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A mineral centrifuge, comprising: a base, the bottom of the base is provided with a driving mechanism; a rotating drum, the rotating drum has an inner wall and an outer wall, and a first cavity is formed between the inner wall and the outer wall, the first cavity is communicated with a water tank, the inner wall of the rotating drum is provided with spiral plates, spiral grooves are formed between adjacent spiral plates, a plurality of water flushing openings are arranged in the spiral grooves, the rotating drum is rotationally connected to the base, the driving mechanism is used for driving the rotating drum to rotate, and the bottom of the rotating drum is provided with a first discharge port; an outer shell, the outer shell covers the rotating drum, the outer shell is fixedly connected to the base, a second cavity is formed between the rotating drum and the outer shell, the top end of the outer shell is provided with a feeding channel, and the sidewall of the outer shell is provided with a second discharge port; characterized in that a movable plug is slidably arranged in the water flushing opening, the movable plug is provided with water passing holes arranged in an axial direction, the movable plug has a first end and a second end, the first end is provided with a flange, the second end penetrates through the water flushing opening and extends into the first cavity, a first elastic element is arranged at the second end, one end of the first elastic element is fixedly connected to the second end, and the other end is abutted to the outer side of the inner wall of the rotating drum, a plurality of helical water outlet openings are arranged on the movable plug near the first end and are spaced apart in a circumferential direction, the helical water outlet openings are helical, one end of the helical water outlet openings is communicated with the water passing holes, and the other end is communicated with the outside of the movable plug, and the movable plug is movable relative to the water flushing opening in an axial direction; the water passing holes are arranged in a trumpet shape and have a large diameter end and a small diameter end, the large diameter end is close to the second end of the movable plug, and the small diameter end is close to the first end of the movable plug.

2. A mineral centrifuge according to claim 1, characterised in that a limiting groove is arranged on the flange, an annular sliding groove is arranged on the inner side of the inner wall of the rotating drum, a limiting block is slidably arranged in the limiting groove, the limiting block is an L-shaped block, a through hole is arranged on the bottom surface of the limiting groove, and one end of the limiting block extends out of the through hole and is slidably arranged in the annular sliding groove.

3. A mineral centrifuge according to claim 2, characterised in that a push plate is further arranged, a matching groove is arranged on the inner wall of the water passing hole, the matching groove and the limiting groove are communicated through a connecting groove arranged in a radial direction, the push plate comprises a first plate and a second plate, the first plate and the second plate are arranged perpendicularly, the first plate is arranged in the matching groove, the second plate is slidably arranged in the connecting groove, the end portion of the second plate extends outwards into the limiting groove, and a second elastic element is arranged between the first plate and the matching groove.

4. The ore centrifuge of claim 1, wherein, a friction ring is arranged between the first elastic element and the outer side of the inner wall of the rotating drum, one side of the friction ring is fixedly connected to the first elastic element, and the other side is abutted to the outer side of the inner wall of the rotating drum.

5. The ore centrifuge of claim 1, wherein, the upper end of the spiral plate is provided with a movable plate, one end of the movable plate is rotationally connected to the spiral plate, and the other end is connected to the spiral plate through a third elastic element, and the flange of the movable plug is abutted to the movable plate.

6. The ore centrifuge of claim 1, wherein, a friction pad is arranged on the outer circumferential side of the flange.

7. The ore centrifuge of claim 1, wherein, a first sliding groove is arranged on the outer wall of the movable plug in an axial direction, a second sliding groove is arranged on the outer wall of the movable plug near the second end, the second sliding groove is an annular groove and is arranged in an inclined manner on the outer wall of the movable plug, one end of the first sliding groove is communicated with the second sliding groove, a sliding block is arranged on the inner wall of the rotating drum at the water flushing opening, the sliding block is slidably arranged in the first sliding groove or the second sliding groove, and the sliding block is movable in the first sliding groove or the second sliding groove.

8. The ore centrifuge of claim 1, wherein, The shell is internally provided with a partition plate, the top surface of the partition plate is an inclined surface, and the bottom end of the inclined surface is flush with the bottom end of the second discharge port.

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