Iron ore grinding and grading cyclone

Abstract

The utility model discloses an iron ore grinding and grading cyclone, which relates to the technical field of cyclones and sequentially comprises an upper shell, a middle shell and a lower shell from top to bottom, a sand settling nozzle is arranged at the bottom of the lower shell, a feeding pipe and an overflow guide pipe are arranged on the upper shell, a feeding funnel is arranged at the top of the feeding pipe, a support frame is arranged on the upper surface of the upper shell, and a sand settling nozzle is arranged on the middle shell. A driving motor is fixed to the supporting frame, the output end of the driving motor is connected with a rotating shaft, one end of the rotating shaft is connected to the output end of the driving motor, and a decompression cone is arranged at the other end of the rotating shaft and located in the feeding hopper. According to the iron ore feeding device, the phenomena of blockage and accumulation of iron ore in the feeding process can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cyclones, in particular to an iron ore grinding and classifying cyclone. Background Art

[0002] Slurry classification technology is a high-tech technology involving multiple disciplines such as machinery, materials, mineral processing, chemical engineering and fluid mechanics. According to the requirements of the production process, the operation of sorting the crushed products according to a certain particle size or different types of particles is called classification. For the fine classification of fine particle suspension, it is divided into medium-fine particle classification and ultra-fine particle classification according to the separated particle size range.

[0003] At present, the realization of classification technology mainly adopts cyclones. The so-called cyclone is a common separation and classification equipment, and its working principle is centrifugal sedimentation. When the mixed liquid to be separated enters the cyclone from the periphery of the cyclone at a certain pressure, a strong three-dimensional elliptical strong rotational shear turbulent motion is generated. Due to the difference in particle size between coarse particles and fine particles, the centrifugal force, centripetal buoyancy, fluid drag, etc. they are subjected to different sizes. Under the action of centrifugal sedimentation, most of the coarse particles are discharged through the bottom flow port of the cyclone, while most of the fine particles are discharged from the overflow pipe, thereby achieving the purpose of separation and classification.

[0004] However, when the existing iron ore grinding and classifying cyclone is feeding iron ore raw materials into the feed port, if the particle size of the iron ore exceeds the feed port limit of the cyclone, it will cause blockage. Large particles of iron ore will block the feed port, hinder the normal flow of iron ore, and cause iron ore to accumulate and block the feed port. Therefore, in order to solve the above technical problems, an iron ore grinding and classifying cyclone is proposed. Utility Model Content

[0005] The present application provides an iron ore grinding and classifying cyclone, which can effectively prevent the iron ore from being blocked and accumulated during the feeding process.

[0006] The present application provides an iron ore grinding and classifying cyclone, which adopts the following technical solution:

[0007] An iron ore grinding and classifying cyclone comprises, from top to bottom, an upper shell, a middle shell and a lower shell, a sand settling nozzle is provided at the bottom of the lower shell, a feed pipe and an overflow duct are provided on the upper shell, a feed funnel is provided on the top of the feed pipe, a support frame is provided on the upper surface of the upper shell, a drive motor is fixed on the support frame, an output end of the drive motor is connected to a rotating shaft, one end of the rotating shaft is connected to the output end of the drive motor, a pressure relief cone is provided at the other end of the rotating shaft, and the pressure relief cone is located in the feed funnel.

[0008] By adopting the above technical scheme, iron ore enters the feed funnel through the feed pipe and then enters the upper shell; a rotating shaft and a decompression cone are arranged in the upper shell; the rotating shaft is driven to rotate by a driving motor, so that the mixture in the decompression cone generates a rotating flow; during the rotation process, due to the action of centrifugal force, heavy sediments are pushed outward to the sand settling spout for discharge; light solid particles and water are pushed to the center of the cyclone to form an upward vortex and are discharged from the cyclone through the overflow duct; particles of different sizes are separated in the cyclone according to the size and density of the solid particles, forming a grading effect; through the synergistic effect of the driving motor and the decompression cone, a cyclone effect is formed, which can effectively grade and separate the iron ore; iron ores of different particle sizes can be effectively separated inside the cyclone, thereby improving the grade and output of the product; the rotating motion of the decompression cone helps to stabilize the flow of the fluid, control the settling speed and distribution of the iron ore, and improve the grading accuracy and stability of the grading cyclone; it can effectively avoid the blockage and accumulation of iron ore during the feeding process, thereby improving the feeding efficiency and stability.

[0009] Preferably, a fixing block is provided on the upper surface of the upper shell, a striking shaft is provided on the fixing block, and one end of the striking shaft is rotatably connected to the fixing block.

[0010] By adopting the above technical solution, the striking shaft is rotatably arranged on the fixed block, and the rotating motion of the striking shaft can better disperse the solid particles in the grinding equipment; through the striking and stirring effects, the solid particles in the ore can be more evenly dispersed in the water, thereby improving the grinding effect; through the rotating motion of the striking shaft, the particles can be prevented from accumulating and clogging inside the equipment; the striking action of the striking shaft helps to free the particles from the walls and obstacles of the equipment, thereby preventing the accumulation and agglomeration of the particles.

[0011] Preferably, a knocking ball is provided at the other end of the knocking shaft, and the knocking ball is located on one side of the feed funnel.

[0012] By adopting the above technical solution, the vibration of the knocking ball can prevent the iron ore particles from being blocked in the feed hopper; through the vibration of the knocking ball, the blockage can be broken, the stuck iron ore particles can be released, and the flow of iron ore can be kept smooth.

[0013] Preferably, the upper shell is provided with a driving component for driving the striking shaft to perform intermittent reciprocating swing.

[0014] By adopting the above technical solution, the striking shaft is driven to make intermittent reciprocating swings.

[0015] Preferably, the driving assembly includes a bending portion arranged on the rotating shaft, a sleeve is movably provided on the bending portion of the rotating shaft, a special-shaped rod is provided on the sleeve, one end of the special-shaped rod is fixedly arranged between the outer wall of the sleeve, and the other end of the special-shaped rod is hinged on the knocking shaft.

[0016] By adopting the above technical solution, the rotation of the rotating shaft can not only drive the decompression cone, but also drive the rotation of the knocking shaft. By setting a driving source, two different effects can be achieved at the same time, and the energy-saving effect is good.

[0017] Preferably, the feed pipe and the feed hopper are connected via a dustproof bag.

[0018] By adopting the above technical solutions, dust-proof bags can prevent the escape of dust, reduce the risk of fire and explosion accidents, and improve the safety of the workplace.

[0019] Preferably, the dustproof cloth bag is provided with a plurality of positioning rings.

[0020] By adopting the above technical solution, the positioning ring provides additional support and stability, which can prevent the bag from shaking, sagging or deforming during operation; this helps to extend the service life of the bag and improve its filtration efficiency and stability.

[0021] Preferably, the top opening of the feed funnel is open to form a feed inlet.

[0022] By adopting the above technical solution, the top opening of the feed funnel is opened to form a feed port, so that the iron ore can smoothly enter the cyclone from the funnel; the design of the feed funnel guides the movement of the fluid to a certain extent, so that the iron ore can evenly enter the cyclone area.

[0023] In summary, this application has the following beneficial effects:

[0024] 1. Iron ore enters the feed hopper through the feed pipe and then enters the upper shell; a rotating shaft and a decompression cone are arranged in the upper shell; the rotating shaft is driven to rotate by a driving motor, so that the mixture in the decompression cone generates a rotating flow; during the rotation process, due to the action of centrifugal force, heavy sediments are pushed outward to the sand settling spout for discharge; light solid particles and water are pushed to the center of the cyclone to form an upward vortex and are discharged from the cyclone through the overflow duct; particles of different sizes are separated in the cyclone according to the size and density of the solid particles, forming a grading effect; through the synergistic effect of the driving motor and the decompression cone, a cyclone effect is formed, which can effectively grade and separate the iron ore; iron ores of different particle sizes can be effectively separated inside the cyclone, improving the grade and yield of the product; the rotating motion of the decompression cone helps to stabilize the flow of the fluid, control the settling speed and distribution of the iron ore, and improve the grading accuracy and stability of the grading cyclone; it can effectively avoid the blockage and accumulation of iron ore during the feeding process, thereby improving the feeding efficiency and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the overall structure of the iron ore grinding and classifying cyclone in this embodiment;

[0026] Figure 2 is a schematic diagram of the connection structure between the rotating shaft and the pressure reducing cone in this embodiment;

[0027] Figure 3 Schematic diagram of the connection structure between the feed pipe and the feed hopper in this embodiment;

[0028] Figure 4 Schematic diagram of the connection structure between the dust bag and the positioning collar in this embodiment;

[0029] Description of reference numerals: 1, upper shell; 2, middle shell; 3, lower shell; 4, first flange; 5, second flange; 6, sand sink; 7, feed pipe; 8, overflow conduit; 9, feed funnel; 10, support frame; 11, drive motor; 12, rotating shaft; 13, pressure relief cone; 14, fixing block; 15, knocking shaft; 16, knocking ball; 17, bending part; 18, sleeve; 19, special-shaped rod; 20, dust bag; 21, positioning collar; DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0031] The utility model discloses an iron ore grinding and classifying cyclone, such as Figure 1 As shown, it includes an upper shell 1, a middle shell 2 and a lower shell 3 from top to bottom. The lower surface of the upper shell 1 and the upper surface of the middle shell 2 are fixedly connected by a first flange 4, and the lower surface of the middle shell 2 and the upper surface of the lower shell 3 are fixedly connected by a second flange 5. A sand settling spout 6 is provided at the bottom of the lower shell 3. A feed pipe 7 and an overflow conduit 8 are provided on the upper shell 1. The iron ore material enters the cyclone through the feed pipe 7 of the upper shell 1. The feed pipe 7 and the overflow conduit 8 on the upper shell 1 play a role in guiding the fluid. In the cyclone, a cyclone device is provided in the cyclone. and guide blades, the fluid forms a rotating vortex; according to the difference in particle size and density of the iron ore, the centrifugal force causes the larger iron ore particles to settle downward along the shell wall, while the smaller iron ore particles continue to rotate and rise in the vortex; the fine iron ore particles that continue to rise are discharged from the overflow duct 8 of the upper shell 1, while the relatively coarse iron ore particles pass through the grading areas of the middle shell 2 and the lower shell 3, and settle downward along the shell wall to the sand settling spout 6, and the sand is discharged through the sand settling spout 6; the application of the cyclone can effectively reduce the powder loss in the grinding process and improve the recovery rate and grinding efficiency of the iron ore.

[0032] like Figure 1 As shown, a feed hopper 9 is provided on the top of the feed pipe 7, and the top opening of the feed funnel 9 is open to form a feed port, so that the iron ore can smoothly enter the cyclone from the funnel; the design of the feed funnel 9 guides the movement of the fluid to a certain extent, so that the iron ore can evenly enter the cyclone area; the open design of the feed funnel 9 helps to avoid blockage and resistance, ensure that the iron ore can quickly and evenly enter the cyclone, reduce the resistance of the fluid flow and thus improve the feeding efficiency; the design of the open top of the feed funnel 9 ensures that the iron ore can smoothly enter the cyclone, reduces the blockage and resistance problems of the feed, and ensures the continuous and uniform feeding of the iron ore.

[0033] like Figure 2As shown, a support frame 10 is provided on the upper surface of the upper shell 1, and a driving motor 11 is fixed on the support frame 10. The output end of the driving motor 11 is connected to a rotating shaft 12, one end of the rotating shaft 12 is connected to the output end of the driving motor 11, and a pressure reducing cone 13 is provided at the other end of the rotating shaft 12. The pressure reducing cone 13 is located in the feeding funnel 9, and the central axis of the pressure reducing cone 13 coincides with the central axis of the feeding funnel 9. The driving motor 11 applies a rotational motion to the pressure reducing cone 13 through the rotating shaft 12; the output end of the driving motor 11 is connected to the rotating shaft 12, and the power is transmitted to the rotating shaft 12, so that the pressure reducing cone 13 can rotate; the pressure reducing cone 13 is rotated. The rotating motion of the cone 13 generates centrifugal force, which forms a rotating fluid circulation or cyclone effect by changing the direction and speed of the fluid during the rotation process; this cyclone effect can lead to the classification and separation of iron ore, so that iron ore of different particle sizes can be separated and collected inside the cyclone; in the feed funnel 9, the presence of the pressure reducing cone 13 can reduce the flow speed of the iron ore, make the fluid more stable, and provide suitable classification conditions for the iron ore; the rotating pressure reducing cone 13 can change the direction and speed of the iron ore flow, thereby realizing the classification and separation of the iron ore, so that iron ore of different particle sizes settles to different areas.

[0034] like Figure 3As shown, the upper surface of the upper shell 1 is provided with a fixed block 14, and the fixed block 14 is provided with a knocking shaft 15, one end of the knocking shaft 15 is rotatably connected to the fixed block 14, and the other end of the knocking shaft 15 is provided with a knocking ball 16, and the knocking ball 16 is located on one side of the feed funnel 9, and the rotating shaft 12 is provided with a bending portion 17, and the bending portion 17 of the rotating shaft 12 is provided with a sleeve 18, and the sleeve 18 is movably arranged between the rotating shaft 12, and the sleeve 18 is provided with a special-shaped rod 19, and one end of the special-shaped rod 19 is provided with a special-shaped rod 19. The end of the special-shaped rod 19 is fixedly arranged between the outer wall of the sleeve 18, and the other end of the special-shaped rod 19 is hinged to the center position of the knocking shaft 15. The rotation of the rotating shaft 12 causes the sleeve 18 on the bent portion 17 of the rotating shaft 12 to produce horizontal displacement; this displacement causes the special-shaped rod 19 and the knocking shaft 15 to move relative to each other, thereby causing the knocking shaft 15 to swing in a circle on the fixed block 14; through the linkage effect, the knocking ball 16 can knock on the outer surface of the feeding funnel 9, generating impact force and vibration force; The knocking action of the knocking ball 16 can break up the block or agglomerated iron ore and improve the fluidity of the iron ore, making it easier for the iron ore to enter the cyclone for classification treatment, thereby improving the processing efficiency; through the vibration force of the knocking ball 16, the iron ore can be more evenly dispersed and flowed in the feed funnel 9, improving the classification accuracy and separation effect of the classification cyclone, and improving the grade and output of the product; by adjusting the rotation speed of the drive motor 11 and the rotation speed of the pressure reducing cone 13, the knocking force and frequency can be flexibly adjusted to adapt to different iron ore characteristics and process requirements, thereby improving the adaptability and flexibility of the equipment; in short, by arranging a fixed block 14, a knocking shaft 15, and a knocking ball 16 on the upper shell 1 of the iron ore grinding and classifying cyclone, and by designing the rotating shaft 12 and the sleeve 18, the circular swing of the knocking shaft 15 can be achieved, which can produce a knocking effect, improve the fluidity and dispersion of the iron ore, and improve the classification effect and processing efficiency.

[0035] like Figure 3 As shown, the top of the feed pipe 7 and the bottom of the feed hopper 9 are connected through a dust-proof bag 20. Through the filtering effect of the dust-proof bag 20, the generation and dispersion of dust can be effectively controlled and reduced, the working environment can be kept clean and purified, and the impact of dust on human health can be reduced.

[0036] like Figure 4 As shown, the dust bag 20 is provided with a plurality of positioning rings 21, which can fix the position of the bag in the equipment to ensure that the dust bag 20 is correctly installed between the top of the feed pipe 7 and the bottom of the feed funnel 9; this can prevent the bag from shifting or misaligning and affecting the filtering effect, thereby ensuring its normal operation.

[0037] Working principle: iron ore material enters the cyclone through the feed pipe 7 of the upper shell 1, and the feed pipe 7 and the overflow conduit 8 on the upper shell 1 play the role of guiding the fluid; in the cyclone, the fluid forms a rotating vortex through the cyclone device and guide blades arranged in the cyclone; according to the difference in particle size and density of the iron ore, the centrifugal force causes the larger iron ore particles to settle downward along the shell wall, while the smaller iron ore particles continue to rotate and rise in the vortex; the fine iron ore particles that continue to rise are discharged from the overflow conduit 8 of the upper shell 1, while the relatively coarse iron ore particles pass through the grading areas of the middle shell 2 and the lower shell 3, and settle downward along the shell wall to the sand settling spout 6, and the sand is discharged through the sand settling spout 6; the application of the cyclone can effectively reduce the powder loss in the grinding process and improve the recovery rate and grinding efficiency of the iron ore.

[0038] During the iron ore feeding process, the driving motor 11 on the support frame 10 is started to make the rotating shaft 12 rotate together with the pressure reducing cone 13. The rotating motion of the pressure reducing cone 13 generates centrifugal force, and forms a rotating fluid circulation or cyclone effect by changing the direction and speed of the fluid during the rotation process. This cyclone effect can lead to the classification and separation of iron ore, so that iron ore of different particle sizes can be separated and collected inside the cyclone.

[0039] On the other hand, through the rotation of the rotating shaft 12, the sleeve 18 on the bent portion 17 of the rotating shaft 12 is displaced in the horizontal plane, and under the linkage action of the special-shaped rod 19 and the knocking shaft 15, the knocking shaft 15 is made to swing in a circle on the fixed block 14, so that the knocking ball 16 knocks on the outer surface of the feed funnel 9; by knocking the outer surface of the feed funnel 9 by the knocking ball 16, impact force and vibration force can be generated, so that the iron ore in the feed funnel 9 is loosened and dispersed; this knocking effect helps to break up block or agglomerated iron ore, and improve the fluidity and grading effect of the iron ore.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An iron ore grinding and classifying cyclone, comprising, from top to bottom, an upper shell (1), a middle shell (2) and a lower shell (3), wherein a sand settling nozzle (6) is provided at the bottom of the lower shell (3), and a feed pipe (7) and an overflow conduit (8) are provided on the upper shell (1), characterized in that: A feeding funnel (9) is provided on the top of the feeding pipe (7), a supporting frame (10) is provided on the upper surface of the upper shell (1), a driving motor (11) is fixed on the supporting frame (10), an output end of the driving motor (11) is connected to a rotating shaft (12), one end of the rotating shaft (12) is connected to the output end of the driving motor (11), a pressure reducing cone (13) is provided on the other end of the rotating shaft (12), and the pressure reducing cone (13) is located in the feeding funnel (9).

2. The iron ore grinding and classifying cyclone according to claim 1, characterized in that: A fixing block (14) is provided on the upper surface of the upper shell (1), a knocking shaft (15) is provided on the fixing block (14), and one end of the knocking shaft (15) is rotatably connected to the fixing block (14).

3. The iron ore grinding and classifying cyclone according to claim 2, characterized in that: A knocking ball (16) is provided at the other end of the knocking shaft (15), and the knocking ball (16) is located on one side of the feeding funnel (9).

4. The iron ore grinding and classifying cyclone according to claim 2, characterized in that: The upper housing (1) is provided with a driving assembly for driving the striking shaft (15) to perform intermittent reciprocating swing.

5. The iron ore grinding and classifying cyclone according to claim 4, characterized in that: The driving assembly comprises a bent portion (17) arranged on a rotating shaft (12); a sleeve (18) is movably arranged on the bent portion (17) of the rotating shaft (12); a special-shaped rod (19) is arranged on the sleeve (18); one end of the special-shaped rod (19) is fixedly arranged between the outer wall of the sleeve (18); and the other end of the special-shaped rod (19) is hinged on the knocking shaft (15).

6. The iron ore grinding and classifying cyclone according to claim 1, characterized in that: The feed pipe (7) and the feed hopper (9) are connected via a dustproof cloth bag (20).

7. The iron ore grinding and classifying cyclone according to claim 6, characterized in that: The dustproof cloth bag (20) is provided with a plurality of positioning rings (21).

8. The iron ore grinding and classifying cyclone according to claim 1, characterized in that: The top opening of the feeding funnel (9) is open and forms a feeding port.

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