A layered flow-aiding spiral chute ore dressing machine and ore dressing method

Abstract

The present invention relates to the technical field of chute ore dressing machines, and discloses a layered flow-assisted spiral chute ore dressing machine and an ore dressing method, which includes a device support frame. Inside the device support frame, a water storage and transfer mechanism is installed. Outside the water storage and transfer mechanism, a spiral chute is installed. Outside the spiral chute, a tailings collection mechanism is installed. Inside the water storage and transfer mechanism, a spray head is installed. Outside the water storage and transfer mechanism, a flow splitter plate is installed. At the top of the device support frame, a feed inlet is installed. For this layered flow-assisted spiral chute ore dressing machine of the present invention, when performing spiral diversion screening on minerals, a plurality of spray heads are arranged between the spiral chutes. During the diversion screening process, the spray heads can inject water onto the spiral chute at multiple positions, which can prevent the concentrate from clogging inside the spiral chute during the screening process, thereby significantly improving the screening efficiency of the concentrate.

Description

Technical Field

[0001] The present invention relates to the technical field of chute ore dressing machines, and particularly to a layered flow-assisted spiral chute ore dressing machine and an ore dressing method. Background Art

[0002] A spiral chute ore dressing machine is a device that classifies minerals by driving ore to move on a spiral chute through water flow. When the water flow drives the minerals to spiral down, the minerals will be distributed at different positions on the chute according to density, and the minerals are classified and screened according to density.

[0003] Chinese Patent CN110575902B discloses a spiral chute ore dressing machine with specific guide grooves, including a spiral chute, a ore distributor, a feeding chute, a support, a ore cutting chute, and a ore receiving hopper. It is characterized in that different numbers of grooves are arranged on the groove surface of each turn of the spiral chute. The groove shape on the surface of the spiral chute is linear, the groove length is 1 / 3 of the diameter of the spiral chute, the distance from the end near the center to the inner edge of the spiral chute is of the diameter of the spiral chute, the groove forms an angle of 28-32° with the radial direction, and the orientation is from the outside of the spiral chute to the inside of the spiral chute. The vertical distance from the lowest end (inner end) of the last groove in each turn to the end radial line of each turn is 20 mm, and the cross-sectional shape of each groove of the spiral chute is a right triangle.

[0004] In the above patent and the prior art, when the spiral chute ore dressing machine screens minerals, the concentrate with a larger density is located inside the spiral chute, the coarse ore with a general density is located in the middle of the spiral chute, and the impurities or tailings with a smaller density are located outside the spiral chute. During the ore dressing process, most of the water flow passes through the outside of the spiral chute, and the concentrate inside the spiral chute is prone to accumulation, thus affecting the screening efficiency of the spiral chute. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a layered flow-assisted spiral chute ore dressing machine and an ore dressing method.

[0006] A layered flow-assisted spiral chute ore dressing machine and an ore dressing method, including a device support frame. A water storage and transfer mechanism is installed inside the device support frame. A spiral chute is installed outside the water storage and transfer mechanism. A tailings collection mechanism is installed outside the spiral chute. A spray head is installed inside the water storage and transfer mechanism. A flow splitter is installed outside the water storage and transfer mechanism. A feed inlet is installed at the top of the device support frame;

[0007] The spiral chute includes an upper separation chute, a middle flow - splitting chute, and a lower flow - splitting chute. The bottom of the upper separation chute is connected to the middle flow - splitting chute, and the bottom of the middle flow - splitting chute is connected to the lower flow - splitting chute. The outsides of the middle flow - splitting chute and the lower flow - splitting chute are both connected to the tailings collection mechanism. Corresponding spray heads and flow - splitting plates are provided in the middles of the upper separation chute, the middle flow - splitting chute, and the lower flow - splitting chute.

[0008] The spray heads can inject water into the upper separation chute, the middle flow - splitting chute, and the lower flow - splitting chute simultaneously. The upper separation chute, the middle flow - splitting chute, and the lower flow - splitting chute can screen ores in sequence. When the water carries the ores and spirally flows downward along the upper separation chute, the middle flow - splitting chute, and the lower flow - splitting chute, the flow - splitting plates can guide the coarser ores with lower density in the upper layer of the water to the outsides of the upper separation chute, the middle flow - splitting chute, and the lower flow - splitting chute, and guide the concentrate ores with higher density in the water to the insides of the upper separation chute, the middle flow - splitting chute, and the lower flow - splitting chute. The tailings collection mechanism can filter and separate the tailings on the outermost sides of the upper separation chute and the middle flow - splitting chute.

[0009] Preferably, the water storage and transfer mechanism includes a water storage cylinder. The water storage cylinder is fixedly installed inside the device support frame. A water flow inlet is provided at the top of the water storage cylinder. A lifting buffer bin is installed inside the water storage cylinder. A buffer spring is installed inside the lifting buffer bin. The movable end of the buffer spring is connected to a lifting movable bin. A lifting connection column is fixedly installed at the top of the lifting movable bin. A sealing connection plate is connected to the outside of the lifting connection column. A nozzle sealing block is fixedly installed on the outside of the sealing connection plate. A limit clamping block is fixedly installed on the outside of the lifting connection column. A limit sliding block is slidably installed inside the limit clamping block. The other end of the limit sliding block is fixedly connected to a flow - splitting connecting rod.

[0010] Preferably, the lifting movable bin is slidably installed inside the lifting buffer bin through the buffer spring. The outside of the lifting movable bin fits with the inside of the lifting buffer bin. The interiors of the lifting movable bin and the lifting buffer bin are of a sealed structure.

[0011] When the water level and water pressure inside the water storage cylinder change, the lifting movable bin can move up and down inside the lifting buffer bin. When the lifting movable bin moves up and down, it can drive the lifting connection column to move up and down synchronously. The buffer spring can improve the sensitivity of the distance change between the lifting buffer bin and the lifting movable bin.

[0012] Preferably, three of the jet heads are fixedly installed on the side wall of the water storage cylinder. One side of the water inlets of the three jet heads is arranged inside the water storage cylinder. The three jet heads respectively correspond to the upper separation chute, the middle flow splitting chute, and the lower flow splitting chute. The nozzle plugging block outside the plugging connection plate corresponds to the two jet heads below. One side of the nozzle plugging block close to the jet head fits with the water inlet of the jet head;

[0013] When the lifting connection column moves up and down, it can drive the nozzle plugging block to move up and down synchronously through the plugging connection plate. When the nozzle plugging block moves up and down, it can adjust the size of the water inlet of the jet head.

[0014] Preferably, the track of the sliding connection between the limit block and the limit slider is of an inclined structure. One side of the flow splitting connecting rod is fixedly connected to the limit slider. The other side of the flow splitting connecting rod is provided with three branches. The three branches on the flow splitting connecting rod all pass through the side wall of the water storage cylinder and are fixedly connected to the flow splitting plate;

[0015] When the lifting connection column moves up and down, it can drive the limit block to move up and down. When the limit block moves up and down, it can drive the limit slider to move horizontally. When the limit slider moves horizontally, the flow splitting connecting rod moves synchronously. When the flow splitting connecting rod moves, it can adjust the position of the flow splitting plate.

[0016] Preferably, an upper flow splitting block is arranged at the discharging end of the upper separation chute, a middle flow splitting block is arranged at the discharging end of the middle flow splitting chute, and a bottom discharging port is arranged at the discharging end of the lower flow splitting chute;

[0017] The discharging end of the upper separation chute is located below the feeding port. The discharging end of the upper separation chute is connected to the feeding end of the middle flow splitting chute. The discharging end of the middle flow splitting chute is connected to the feeding end of the lower flow splitting chute.

[0018] Preferably, the upper flow splitting block can guide the tailings on the outermost side of the water flow passing through the upper separation chute and separate them through the tailings collection mechanism. The middle flow splitting block can guide the tailings on the outermost side of the water flow passing through the middle flow splitting chute and separate them through the tailings collection mechanism.

[0019] Preferably, the tailings collection mechanism includes a tailings storage bin. A tailings filter screen is fixedly installed inside the tailings storage bin. A tailings input pipe is fixedly installed inside the tailings storage bin. A first water outlet pipe is fixedly connected to the top of the tailings storage bin. A second water outlet pipe is fixedly connected to the top of the tailings storage bin;

[0020] The bottom end of the tailings input pipe passes through the top of the tailings storage bin and extends above the tailings filter screen. The top end of the tailings input pipe is simultaneously connected to the upper separation chute and the middle flow diversion chute. The tailings input pipe can transport the tailings and water separated by the upper flow diversion block and the middle flow diversion block to the lower part of the tailings filter screen inside the tailings storage bin.

[0021] Preferably, the inside of the tailings storage bin is connected to the inside of the middle flow diversion chute through a first water outlet pipe, and the inside of the tailings storage bin is connected to the inside of the lower flow diversion chute through a second water outlet pipe;

[0022] The tailings filter screen can filter the tailings below the tailings filter screen. The first water outlet pipe can input the overflow water flow into the middle flow diversion chute, and the second water outlet pipe can transport the overflow water flow to the inside of the lower flow diversion chute.

[0023] A beneficiation method uses the above-mentioned hierarchical assisted-flow spiral chute beneficiation machine.

[0024] Compared with the prior art, the present invention provides a hierarchical assisted-flow spiral chute beneficiation machine and a beneficiation method, having the following beneficial effects:

[0025] 1. For this hierarchical assisted-flow spiral chute beneficiation machine, when performing spiral diversion screening on minerals, a plurality of spray heads are arranged between the spiral chutes. During the diversion screening process, the spray heads can inject water flow onto the spiral chutes at multiple positions, which can prevent the concentrate from clogging inside the spiral chutes during the screening process, thereby significantly improving the screening efficiency of the concentrate.

[0026] 2. For this hierarchical assisted-flow spiral chute beneficiation machine, when performing diversion screening, the water flow is first injected into the water storage cylinder. During the diversion screening, the water pressure at the bottom of the water storage cylinder is relatively large, and the water flow ejected by the spray heads at the lower positions is also greater. During the screening, the density of the minerals on the lower flow diversion chute is also greater than the density of the minerals on the middle flow diversion chute and the upper separation chute, which can make the minerals flow more smoothly on the spiral chute and can also cause the position of the diversion plate to change synchronously, thereby ensuring the stability during the entire mineral screening process.

[0027] 3. For this hierarchical assisted-flow spiral chute beneficiation machine, when performing diversion screening, the tailings can enter the tailings storage bin through the tailings input pipe. When the water flow and the tailings enter the tailings storage bin, the tailings are filtered by the tailings filter screen and remain at the bottom of the tailings storage bin, and the water flow can overflow from the tailings storage bin through the tailings filter screen. The overflow water flow can return to the spiral chute inside through the first water outlet pipe and the second water outlet pipe. During the screening process of the ore, the tailings collection mechanism can not only separate the tailings in a timely manner but also re-inject the separated water flow into the spiral chute. Description of the Drawings

[0028] Figure 1 Schematic three - dimensional structure of a layered flow - assisting spiral chute ore separator of the present invention Figure 1 ;

[0029] Figure 2 Schematic three - dimensional structure of a layered flow - assisting spiral chute ore separator of the present invention Figure 2 ;

[0030] Figure 3 Schematic three - dimensional structure diagram of the water storage and transfer mechanism of a layered flow - assisting spiral chute ore separator of the present invention;

[0031] Figure 4 Schematic internal structure diagram of the water storage and transfer mechanism of a layered flow - assisting spiral chute ore separator of the present invention;

[0032] Figure 5 Schematic internal structure diagram of the lifting and buffering bin of a layered flow - assisting spiral chute ore separator of the present invention;

[0033] Figure 6 Schematic three - dimensional structure diagram of the spiral chute of a layered flow - assisting spiral chute ore separator of the present invention;

[0034] Figure 7 Schematic internal structure diagram of the spiral chute of a layered flow - assisting spiral chute ore separator of the present invention;

[0035] Figure 8 Schematic three - dimensional structure diagram of the tailings collection mechanism of a layered flow - assisting spiral chute ore separator of the present invention.

[0036] In the figure: 1, device support frame; 2, water storage and transfer mechanism; 21, water storage cylinder; 22, water flow inlet; 23, lifting and buffering bin; 24, buffering spring; 25, lifting movable bin; 26, lifting connection column; 27, sealing connection plate; 28, nozzle sealing block; 29, limit clamping block; 210, limit sliding block; 211, shunt connecting rod; 3, spiral chute; 31, upper separation chute; 32, middle shunt chute; 33, lower shunt chute; 34, upper shunt block; 35, middle shunt block; 36, bottom discharge port; 4, tailings collection mechanism; 41, tailings storage bin; 42, tailings filter screen; 43, tailings input pipe; 44, first water outlet pipe; 45, second water outlet pipe; 5, spray head; 6, shunt plate; 7, feed inlet. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] As introduced in the background art, there are deficiencies in the prior art. To solve the above technical problems, the present application proposes a layered assisted flow type spiral chute ore dressing machine and an ore dressing method.

[0039] Embodiment 1:

[0040] Please refer to Figure 1 - Figure 8 , a layered assisted flow type spiral chute ore dressing machine, including a device support frame 1. Inside the device support frame 1, a water storage and transfer mechanism 2 is installed. Outside the water storage and transfer mechanism 2, a spiral chute 3 is installed. Outside the spiral chute 3, a tailings collection mechanism 4 is installed. Inside the water storage and transfer mechanism 2, a spray head 5 is installed. Outside the water storage and transfer mechanism 2, a flow dividing plate 6 is installed. At the top of the device support frame 1, a feed inlet 7 is installed;

[0041] The spiral chute 3 includes an upper separation chute 31, a middle flow dividing chute 32, and a lower flow dividing chute 33. The bottom of the upper separation chute 31 is connected to the middle flow dividing chute 32. The bottom of the middle flow dividing chute 32 is connected to the lower flow dividing chute 33. The outsides of the middle flow dividing chute 32 and the lower flow dividing chute 33 are both connected to the tailings collection mechanism 4. Corresponding spray heads 5 and flow dividing plates 6 are provided in the middles of the upper separation chute 31, the middle flow dividing chute 32, and the lower flow dividing chute 33;

[0042] The spray head 5 can simultaneously inject water into the upper separation chute 31, the middle flow dividing chute 32, and the lower flow dividing chute 33. The upper separation chute 31, the middle flow dividing chute 32, and the lower flow dividing chute 33 can sequentially screen the ore. When the water carries the ore and spirally flows downward along the upper separation chute 31, the middle flow dividing chute 32, and the lower flow dividing chute 33, the flow dividing plate 6 can guide the coarser ore with a lower density in the upper layer of the water to the outside of the upper separation chute 31, the middle flow dividing chute 32, and the lower flow dividing chute 33, and guide the concentrate with a higher density in the water to the inside of the upper separation chute 31, the middle flow dividing chute 32, and the lower flow dividing chute 33. The tailings collection mechanism 4 can filter and separate the tailings on the outermost sides of the upper separation chute 31 and the middle flow dividing chute 32.

[0043] During operation, first inject water source into the water storage and transfer mechanism 2, and then add the ore to be screened onto the upper separation chute 31 through the feed inlet 7. The water flow inside the water storage and transfer mechanism 2 flows into the spiral chute 3 through the spray head 5. The water flow can drive the ore to move spirally downward along the spiral chute 3. During the process of the water flow and the ore moving spirally downward along the spiral chute 3, the concentrate with the highest density is located inside the spiral chute 3, the medium-density rough ore is in the middle of the spiral chute 3, and the tailings with the lowest density are on the outside of the spiral chute 3. During the screening process, the tailings collection mechanism 4 can collect the tailings on the outside of the upper separation chute 31 and the middle diversion chute 32, and the diversion plate 6 can actively divert the concentrate and rough ore in the water flow, guiding the rough ore with lower density in the upper layer of the water flow to the outside of the upper separation chute 31, the middle diversion chute 32 and the lower diversion chute 33, and guiding the concentrate with higher density in the water flow to the inside of the upper separation chute 31, the middle diversion chute 32 and the lower diversion chute 33. The tailings collection mechanism 4 can timely remove and separate the tailings during the screening process, and during the screening process, water flow is injected into the spiral chute 3 in sections through multiple spray heads 5, which can prevent the concentrate from clogging inside the spiral chute 3 during the screening process, thus significantly improving the screening efficiency of the concentrate.

[0044] Embodiment 2:

[0045] The difference from the above embodiment is as follows. Please refer to Figure 3 - Figure 5 , the water storage and transfer mechanism 2 includes a water storage cylinder 21, the water storage cylinder 21 is fixedly installed inside the device support frame 1, a water flow inlet 22 is arranged at the top of the water storage cylinder 21, a lifting and buffering bin 23 is installed inside the water storage cylinder 21, a buffering spring 24 is installed inside the lifting and buffering bin 23, the movable end of the buffering spring 24 is connected with a lifting movable bin 25, a lifting connecting column 26 is fixedly installed at the top of the lifting movable bin 25, a plugging connecting plate 27 is connected to the outside of the lifting connecting column 26, a spray head plugging block 28 is fixedly installed on the outside of the plugging connecting plate 27, a limiting block 29 is fixedly installed on the outside of the lifting connecting column 26, a limiting slider 210 is slidably installed inside the limiting block 29, and the other end of the limiting slider 210 is fixedly connected with a diversion connecting rod 211.

[0046] The lifting movable bin 25 is slidably installed inside the lifting and buffering bin 23 through the buffering spring 24, the outside of the lifting movable bin 25 is in contact with the inside of the lifting and buffering bin 23, and the inside of the lifting movable bin 25 and the lifting and buffering bin 23 is a sealed structure;

[0047] When the water level and water pressure inside the water storage cylinder 21 change, the lifting movable bin 25 can move up and down inside the lifting buffer bin 23. When the lifting movable bin 25 moves up and down, it can drive the lifting connection column 26 to move up and down synchronously. The buffer spring 24 can improve the sensitivity of the distance change between the lifting buffer bin 23 and the lifting movable bin 25.

[0048] Three spray nozzles 5 are fixedly installed on the side wall of the water storage cylinder 21. One side of the water inlets of the three spray nozzles 5 is arranged inside the water storage cylinder 21. The three spray nozzles 5 respectively correspond to the upper separation chute 31, the middle diversion chute 32 and the lower diversion chute 33. The nozzle plugging block 28 outside the plugging connection plate 27 corresponds to the two spray nozzles 5 below. The side of the nozzle plugging block 28 close to the spray nozzle 5 is in contact with the water inlet of the spray nozzle 5;

[0049] When the lifting connection column 26 moves up and down, it can drive the nozzle plugging block 28 to move up and down synchronously through the plugging connection plate 27. When the nozzle plugging block 28 moves up and down, it can adjust the size of the water inlet of the spray nozzle 5.

[0050] The track of the sliding connection between the limit block 29 and the limit slider 210 is an inclined structure. One side of the diversion connecting rod 211 is fixedly connected to the limit slider 210. The other side of the diversion connecting rod 211 is provided with three branches. The three branches on the diversion connecting rod 211 all pass through the side wall of the water storage cylinder 21 and are fixedly connected to the diversion plate 6;

[0051] When the lifting connection column 26 moves up and down, it can drive the limit block 29 to move up and down. When the limit block 29 moves up and down, it can drive the limit slider 210 to move horizontally. When the limit slider 210 moves horizontally, the diversion connecting rod 211 moves synchronously. When the diversion connecting rod 211 moves, it can adjust the position of the diversion plate 6.

[0052] When the inside of the water storage cylinder 21 is empty, the lifting movable bin 25 and the lifting connecting column 26 are at the highest point. At this time, the nozzle plugging block 28 can block the water inlets of the two lower spray nozzles 5 below. And at this time, the flow dividing plate 6 is on the inner side of the spiral chute 3. When injecting water into the inside of the water storage cylinder 21 through the water inlet 22, since the water inlets of the two lower spray nozzles 5 are blocked by the nozzle plugging block 28, the liquid level in the water storage cylinder 21 continuously rises. When the liquid level inside the water storage cylinder 21 rises, the water pressure received by the lifting movable bin 25 gradually increases, causing the lifting movable bin 25 to move downward on the lifting buffer bin 23. When the lifting movable bin 25 moves downward, it can synchronously drive the lifting connecting column 26 and the limit clamping block 29 to move downward. When the lifting connecting column 26 moves downward, it can drive the plugging connecting plate 27 to move downward synchronously. When the plugging connecting plate 27 moves, it can open the water inlets of the spray nozzles 5 so that the water inside the water storage cylinder 21 flows out from all the spray nozzles 5 at the same time. During operation, the water pressure at the bottom of the water storage cylinder 21 is relatively large, and the water flow sprayed by the lower spray nozzles 5 is also greater. During screening, the density of the minerals on the lower flow dividing chute 33 is also greater than that of the minerals on the middle flow dividing chute 32 and the upper separation chute 31, which can make the minerals flow more smoothly on the spiral chute 3. When the limit clamping block 29 moves downward, it can drive the flow dividing connecting rod 211 to move laterally outward through the limit sliding block 210. When the flow dividing connecting rod 211 moves laterally outward, it can drive the flow dividing plate 6 to move to adjust the position of the flow dividing plate 6. When screening minerals with higher density is required, a greater water flow is needed. When the water pressure inside the water storage cylinder 21 increases, the water flow sprayed by the spray nozzles 5 also increases, increasing the water flow speed inside the spiral chute 3, and the position of the flow dividing plate 6 can change synchronously, thus ensuring the stability during the whole mineral screening process.

[0053] Embodiment Three:

[0054] The difference from the above embodiment is as follows. Please refer to Figure 1 - Figure 8 At the discharge end of the upper separation chute 31, there is an upper flow dividing block 34. At the discharge end of the middle flow dividing chute 32, there is a middle flow dividing block 35. At the discharge end of the lower flow dividing chute 33, there is a bottom discharge port 36;

[0055] The discharge end of the upper separation chute 31 is located below the feed port 7. The discharge end of the upper separation chute 31 is connected to the feed end of the middle flow dividing chute 32. The discharge end of the middle flow dividing chute 32 is connected to the feed end of the lower flow dividing chute 33.

[0056] The upper flow dividing block 34 can guide the tailings on the outermost side of the water flow on the upper separation chute 31 and separate them through the tailings collection mechanism 4. The middle flow dividing block 35 can guide the tailings on the outermost side of the water flow on the middle flow dividing chute 32 and separate them through the tailings collection mechanism 4.

[0057] The tailings collection mechanism 4 includes a tailings storage bin 41. Inside the tailings storage bin 41, a tailings filter screen 42 is fixedly installed. Inside the tailings storage bin 41, a tailings input pipe 43 is fixedly installed. At the top of the tailings storage bin 41, a first water outlet pipe 44 is fixedly connected. At the top of the tailings storage bin 41, a second water outlet pipe 45 is fixedly connected.

[0058] The bottom end of the tailings input pipe 43 passes through the top of the tailings storage bin 41 and extends above the tailings filter screen 42. The top end of the tailings input pipe 43 is simultaneously connected to the upper separation chute 31 and the middle diversion chute 32. The tailings input pipe 43 can transport the tailings and water separated by the upper diversion block 34 and the middle diversion block 35 to the lower part of the tailings filter screen 42 inside the tailings storage bin 41.

[0059] Inside the tailings storage bin 41, it is connected to the inside of the middle diversion chute 32 through the first water outlet pipe 44. Inside the tailings storage bin 41, it is connected to the inside of the lower diversion chute 33 through the second water outlet pipe 45.

[0060] The tailings filter screen 42 can filter the tailings below the tailings filter screen 42. The first water outlet pipe 44 can input the overflowing water into the middle diversion chute 32. The second water outlet pipe 45 can transport the overflowing water to the inside of the lower diversion chute 33.

[0061] During the working process, the water carrying minerals passes through the upper separation chute 31, the middle diversion chute 32, and the lower diversion chute 33 in sequence. When the water carrying minerals passes through the upper separation chute 31, the upper diversion block 34 can separate the tailings on the outside. The separated tailings enter the inside of the tailings storage bin 41 through the tailings input pipe 43. When the water carrying minerals passes through the middle diversion chute 32, the middle diversion block 35 can separate the tailings on the outside. The separated tailings also enter the inside of the tailings storage bin 41 through the tailings input pipe 43. When the water and tailings enter the inside of the tailings storage bin 41, the tailings are filtered by the tailings filter screen 42 and remain at the bottom of the tailings storage bin 41. The water can overflow from the inside of the tailings storage bin 41 through the tailings filter screen 42. The overflowing water can return to the spiral chute 3 through the first water outlet pipe 44 and the second water outlet pipe 45. During the process of screening the ore, the tailings collection mechanism 4 can not only separate the tailings in time but also re-inject the separated water into the spiral chute 3, thus ensuring the sufficient water flow inside the spiral chute 3 and the smooth progress of mineral screening.

[0062] Embodiment 4:

[0063] A beneficiation method using a layered assisted flow type spiral chute beneficiation machine as in Embodiments 1 to 3 includes the following steps:

[0064] During operation, water is first injected into the water storage and transfer mechanism 2, and ore to be screened is added onto the spiral chute 3 through the feed inlet 7.

[0065] The water flow inside the water storage and transfer mechanism 2 sprays out from the jet heads 5, driving the ore to move spirally downward along the spiral chute 3. When the ore moves with the water flow, the structure of the multi-layer jet heads 5 can prevent the accumulation of concentrate.

[0066] During the diversion process, the tailings collection mechanism 4 can timely separate the tailings, and the diversion plate 6 can actively separate minerals with different densities.

[0067] The screened concentrate and coarse ore are discharged from the lower diversion chute 33, and the tailings remain inside the tailings collection mechanism 4.

[0068] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stratified flow-assisted spiral chute concentrator, comprising a device support frame (1), characterized in that: A water storage transfer mechanism (2) is installed inside the device support frame (1), a spiral chute (3) is installed outside the water storage transfer mechanism (2), a tailings collection mechanism (4) is installed outside the spiral chute (3), a jet head (5) is installed inside the water storage transfer mechanism (2), a diverter plate (6) is installed outside the water storage transfer mechanism (2), and a feed port (7) is installed on the top of the device support frame (1); The spiral chute (3) comprises an upper separation chute (31), a middle diversion chute (32) and a lower diversion chute (33); the bottom of the upper separation chute (31) is connected to the middle diversion chute (32); the bottom of the middle diversion chute (32) is connected to the lower diversion chute (33); the outsides of the middle diversion chute (32) and the lower diversion chute (33) are connected to a tailings collection mechanism (4); and corresponding spray heads (5) and diverter plates (6) are arranged in the middle of the upper separation chute (31), the middle diversion chute (32) and the lower diversion chute (33); The water storage transfer mechanism (2) comprises a water storage cylinder (21), the water storage cylinder (21) being fixedly mounted inside the device support frame (1), the top of the water storage cylinder (21) being provided with a water flow inlet (22), the inside of the water storage cylinder (21) being provided with a lifting and lowering buffer chamber (23), the inside of the lifting and lowering buffer chamber (23) being provided with a buffer spring (24), the movable end of the buffer spring (24) being connected to a lifting and lowering movable chamber (25), the top of the lifting and lowering movable chamber (25) being fixedly mounted with a lifting and lowering connecting column (26), the outside of the lifting and lowering connecting column (26) being connected with a blocking connecting plate (27), the outside of the blocking connecting plate (27) being fixedly mounted with a nozzle blocking block (28), the outside of the lifting and lowering connecting column (26) being fixedly mounted with a limit block (29), the inside of the limit block (29) being slidably mounted with a limit slider (210), the other end of the limit slider (210) being fixedly connected with a diversion connecting rod (211); The jet head (5) can simultaneously inject flowing water into the upper separation chute (31), the middle diversion chute (32) and the lower diversion chute (33); the upper separation chute (31), the middle diversion chute (32) and the lower diversion chute (33) can screen the ore in sequence; when the water flow carries the ore and flows spirally downward along the upper separation chute (31), the middle diversion chute (32) and the lower diversion chute (33), the diverter plate (6) The invention is capable of guiding coarse ore with lower density in the upper layer of the water flow to the outside of the upper separation chute (31), the middle diversion chute (32) and the lower diversion chute (33), and guiding concentrate with higher density in the water flow to the inside of the upper separation chute (31), the middle diversion chute (32) and the lower diversion chute (33); and the tailings collection mechanism (4) is capable of filtering and separating the outermost tailings on the upper separation chute (31) and the middle diversion chute (32).

2. The stratified flow-assisted spiral chute concentrator according to claim 1 is characterized in that: The lifting movable bin (25) is slidably mounted inside the lifting and easing bin (23) via an easing spring (24); the outside of the lifting movable bin (25) fits in contact with the inside of the lifting and easing bin (23); the inside of the lifting movable bin (25) and the lifting and easing bin (23) are sealed structures; When the water level and water pressure inside the water storage cylinder (21) change, the lifting movable chamber (25) can be caused to move up and down inside the lifting and lowering buffer chamber (23); when the lifting movable chamber (25) moves up and down, the lifting connection column (26) can be driven to move up and down synchronously; and the buffer spring (24) can increase the sensitivity of the distance change between the lifting and lowering buffer chamber (23) and the lifting movable chamber (25).

3. The stratified flow-assisted spiral chute concentrator according to claim 2 is characterized in that: The three spray heads (5) are fixedly mounted on the side wall of the water storage cylinder (21); one side of the water inlet of the three spray heads (5) is arranged inside the water storage cylinder (21); the three spray heads (5) correspond to the upper separation chute (31), the middle flow chute (32) and the lower flow chute (33), respectively; the spray head blocking block (28) outside the blocking connection plate (27) corresponds to the two spray heads (5) at the bottom; and the side of the spray head blocking block (28) close to the spray head (5) is in contact with the water inlet of the spray head (5); When the lifting connection column (26) moves up and down, it can synchronously drive the nozzle blocking block (28) to move up and down through the blocking connection plate (27); when the nozzle blocking block (28) moves up and down, the size of the water inlet of the spray head (5) can be adjusted.

4. The stratified flow-assisted spiral chute concentrator according to claim 3 is characterized in that: The track for sliding connection between the limit block (29) and the limit slider (210) is an inclined structure; one side of the diversion connecting rod (211) is fixedly connected to the limit slider (210); the other side of the diversion connecting rod (211) is provided with three branches; the three branches on the diversion connecting rod (211) all pass through the side wall of the water storage cylinder (21) and are fixedly connected to the diversion plate (6); When the lifting connection column (26) moves up and down, it can drive the limit block (29) to move up and down. When the limit block (29) moves up and down, it can drive the limit slider (210) to move horizontally. When the limit slider (210) moves horizontally, the diverter connection rod (211) moves synchronously. When the diverter connection rod (211) moves, the position of the diverter plate (6) can be adjusted.

5. The stratified flow-assisted spiral chute concentrator according to claim 1 is characterized in that: The discharge end of the upper separation chute (31) is provided with an upper diversion block (34), the discharge end of the middle diversion chute (32) is provided with a middle diversion block (35), and the discharge end of the lower diversion chute (33) is provided with a bottom discharge port (36); The discharge end of the upper separation chute (31) is located below the feed port (7), the discharge end of the upper separation chute (31) is connected to the feed end of the middle separation chute (32), and the discharge end of the middle separation chute (32) is connected to the feed end of the lower separation chute (33).

6. The stratified flow-assisted spiral chute concentrator according to claim 5, characterized in that: The upper diversion block (34) is capable of guiding the tailings at the outermost side of the upper water flow passing through the upper separation chute (31) and separating them through the tailings collection mechanism (4), and the middle diversion block (35) is capable of guiding the tailings at the outermost side of the upper water flow passing through the middle diversion chute (32) and separating them through the tailings collection mechanism (4).

7. The stratified flow-assisted spiral chute concentrator according to claim 6, characterized in that: The tailings collection mechanism (4) comprises a tailings storage bin (41), a tailings filter screen (42) is fixedly installed inside the tailings storage bin (41), a tailings input pipe (43) is fixedly installed inside the tailings storage bin (41), a first water outlet pipe (44) is fixedly connected to the top of the tailings storage bin (41), and a second water outlet pipe (45) is fixedly connected to the top of the tailings storage bin (41); The bottom end of the tailings input pipe (43) passes through the top of the tailings storage bin (41) and extends above the tailings filter (42). The top end of the tailings input pipe (43) is simultaneously connected to the upper separation chute (31) and the middle diversion chute (32). The tailings input pipe (43) can transport the tailings and water separated by the upper diversion block (34) and the middle diversion block (35) to the bottom of the tailings filter (42) inside the tailings storage bin (41).

8. The stratified flow-assisted spiral chute concentrator according to claim 7, characterized in that: The interior of the tailings storage bin (41) is communicated with the interior of the middle diversion chute (32) via a first water outlet pipe (44), and the interior of the tailings storage bin (41) is communicated with the interior of the lower diversion chute (33) via a second water outlet pipe (45); The tailings filter (42) can filter the tailings below the tailings filter (42), the first water outlet pipe (44) can input the overflowed water flow into the middle diversion chute (32), and the second water outlet pipe (45) can transport the overflowed water flow to the lower diversion chute (33).

9. A mineral processing method using a stratified flow-assisted spiral chute mineral processing machine as claimed in any one of claims 1 to 8.

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