CN214440036U - Fine pulp fractional concentration centrifuge - Google Patents

Abstract

The utility model belongs to the technical field of mineral separation, concretely relates to fine ore pulp fractional concentration centrifuge, including the rotary drum, the inside cavity that is provided with of rotary drum, be provided with the spiral in the cavity of rotary drum and push away the material assembly, the spiral pushes away the material assembly and includes the spiral hub, the centre of spiral hub has hollow structure, spiral hub periphery is provided with helical blade, the both ends of rotary drum are provided with the center pin, spiral hub both ends are provided with the screw axis, the inlet pipe has been seted up on spiral hub or the screw axis, hollow structure in the inlet pipe intercommunication spiral hub, the feed port has been seted up on the surface of spiral hub, hollow structure and the cavity of rotary drum in the feed port intercommunication spiral hub, make the material in the spiral hub get into the rotary drum along the feed port, compare with concentrated equipment such as traditional concentrator or concentrated concentrator, have the investment is few, take up an area of for a short time, compare with traditional sedimentation centrifuge equipment and have that the throughput is big, Low investment and operation cost.

Description

Fine pulp fractional concentration centrifuge

Technical Field

The application belongs to the technical field of mineral separation, concretely relates to fine ore pulp fractional concentration centrifuge.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

In the wet separation process of non-metal or metal minerals such as coal and the like, a large amount of fine particle byproducts are generated, wherein a part of fine particles have a very low settling velocity under the gravity condition because the solid density of the fine particles is close to that of a liquid medium and the particle size of the fine particles is fine, and the subsequent solid-liquid separation operation efficiency is seriously influenced.

In order to separate fine-grained minerals from a liquid medium, a common approach is to adopt two-stage processes of concentration and dehydration, wherein the concentration process is generally realized by natural sedimentation and centrifugal sedimentation, the dehydration process is generally realized by screening, sedimentation, filtration and other devices, and in order to ensure the efficiency of the dehydration process, the pulp needs to be subjected to pre-concentration treatment.

The pre-concentration treatment equipment mainly comprises a large concentration tank utilizing gravity sedimentation and a concentration cyclone or a sedimentation centrifuge utilizing centrifugal sedimentation.

In view of the adverse effects of solid and liquid density difference of fine particle solids in liquid media, liquid retardation and turbulence factors, the sedimentation velocity in the gravity free state is very slow, so that the common gravity concentration equipment with the gravity acceleration of 1g needs to improve the concentration efficiency by adding medicament and increasing the volume of a sedimentation tank.

Although the centrifugal settling efficiency of the concentration cyclone is obviously improved relative to gravity settling, and the centrifugal acceleration can reach 50g, the realization of the large-scale concentration cyclone equipment and the improvement of the control flexibility are difficult to realize.

The centrifugal acceleration of the sedimentation type centrifuge or the sedimentation filtering type centrifuge which utilizes the centrifugal sedimentation principle is further improved than that of a cyclone, and can reach more than 600g, the sedimentation efficiency and the automation degree of equipment are further improved, but the defects of inconvenient regulation, high manufacturing cost and the like still exist, and the large-scale popularization and application are influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the application provides a fine ore pulp fractional concentration centrifuge.

The utility model provides a fine ore pulp concentrates centrifuge in grades, this application is through the cooperation of rotary drum and spiral hub for form the space of circulation material between rotary drum and the spiral hub, the hollow structure feeding in the middle of the spiral hub is followed to the material, and gets into between rotary drum and the spiral hub along the feed port on the spiral hub, and the material removes gradually under helical blade's drive.

In order to achieve the purpose, the following technical scheme is adopted in the application:

the utility model provides a fine ore pulp concentrates centrifuge in grades, including the rotary drum, the inside cavity that is provided with of rotary drum, be provided with the spiral in the cavity of rotary drum and push away the material assembly, the spiral pushes away the material assembly and includes spiral hub, the centre of spiral hub has hollow structure, spiral hub periphery is provided with helical blade, the both ends of rotary drum are provided with the center pin, spiral hub both ends are provided with the screw axis, screw axis connection screw drive, it rotates to drive the screw axis by screw drive, center pin hub connection drive unit, it rotates to drive the center pin by drive unit, the inlet pipe has been seted up on spiral hub or the screw axis, hollow structure in the inlet pipe intercommunication spiral hub, the feed port has been seted up on the surface of spiral hub, the hollow structure in the feed port intercommunication spiral hub and the cavity of rotary drum, make the material in the spiral hub get into the rotary drum along the feed port.

As a further embodiment, the driving unit is a power output device, the driving unit independently drives the central shaft to rotate, the screw driving device is a power output device, and the screw driving device independently drives the screw shaft to rotate.

As a further embodiment, the screw driving device and the driving unit share a set of auxiliary shaft assembly, the auxiliary shaft assembly comprises a gear box, an input shaft and at least two output shafts are arranged on the gear box, the input shaft of the auxiliary shaft assembly is connected with the power output device, one output shaft of the auxiliary shaft assembly is connected with the screw shaft, and the other output shaft of the auxiliary shaft assembly is connected with the central shaft.

As a further implementation scheme, a rack is arranged outside the central shaft, a bearing seat is arranged on the rack, and the central shaft penetrates through a bearing of the bearing seat.

As a further embodiment, the central shaft is provided with a central cavity, a bearing is arranged in the central cavity, and the spiral shaft penetrates through the bearing in the central cavity.

As a further embodiment, the inner periphery of the rotary drum is coated with a wear-resistant layer, and the outer periphery of the spiral blade and the inner periphery of the spiral hub are coated with wear-resistant layers.

Furthermore, the rotary drum comprises at least three sections of cylindrical structures, each cylindrical structure comprises a first cylinder, a connecting cylinder and a second cylinder, the diameter of each first cylinder is equal to that of each second cylinder, one end of each connecting cylinder is fixedly connected with the corresponding first cylinder, and the other end of each connecting cylinder is fixedly connected with the corresponding second cylinder.

Further, this application still includes the feed unit, and the feed unit includes pan feeding pipe, feed valve, baiting valve, medicament pipe, scavenge pipe and washing water valve, and spiral hub is connected to feed pipe, discharging pipe, installs the feed valve on the feed pipe, installs the bleeder valve on the discharging pipe.

As a further embodiment, a cleaning pipe is arranged on the spiral hub, a medicament pipe is arranged on the spiral hub or the cleaning pipe, and a cleaning water valve is arranged on the cleaning pipe.

Further, the rotation speed of the central shaft is less than that of the screw shaft.

Compared with the prior art, the beneficial effect of this application is:

1. as an efficient low-concentration ore pulp concentration scheme, compared with traditional concentration equipment such as a thickener or a concentration cyclone, the efficient low-concentration ore pulp concentration scheme has the advantages of less investment, small occupied area and short period, and compared with traditional sedimentation centrifugal equipment, the efficient low-concentration ore pulp concentration scheme has the advantages of large processing capacity and low investment and operation cost.

2. This application is applicable to the occasion that the system productivity increases but water treatment system ability is not enough, can realize the upgrading transformation of ore pulp throughput fast under the condition that does not increase civil engineering work load and area, adopts this patent equipment to ore pulp pre-concentration treatment, can effectively alleviate original settlement concentrator's work load, improves follow-up dewatering equipment's work efficiency by a wide margin, finally improves water treatment system's throughput.

3. The method is suitable for fine particle grading application, and therefore the cut-off particle size change is achieved through adjustment of the operation parameters of the equipment, and finally separation of different particle size grades is achieved, so that subsequent quality grading treatment and utilization are facilitated. Based on the performance characteristics, the method can be used for grading and regrinding the coal water slurry, and the concentration of the coal water slurry is improved by improving the granularity composition of the coal water slurry, so that the combustion efficiency of the coal water slurry is improved. Meanwhile, the method can also be used in other occasions where the ore pulp needs to be independently subjected to quality-based treatment and utilization in local ore dressing process flows.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

1. The device comprises a rotary drum, a spiral pushing assembly, a driving unit, a spiral driving device, a feeding unit, a shell, a base, a lubricating system, a control system, a hydraulic station, a chemical tube and a rotary drum, wherein the rotary drum 2, the spiral pushing assembly 3, the driving unit 4, the spiral driving device 5, the feeding unit 6, the shell 7, the base 8, the lubricating system 9, the control system 10, the hydraulic station 11 and the chemical tube are arranged in the rotary drum;

1.1, a first cylinder, 1.2, a connecting cylinder, 1.3, a second cylinder, 1.4, a cavity, 1.5 and a central shaft;

2.1, a spiral hub, 2.2, spiral blades, 2.3, a spiral shaft, 2.4, a feeding hole, 2.5 and a hollow structure.

In the figure:

fig. 1 is a schematic structural diagram of a drum and a spiral hub of the present application.

Fig. 2 is an external structural diagram of the present application.

Fig. 3 is a schematic structural view of the drum of the present application.

Fig. 4 is a schematic structural view of the helical hub of the present application.

Fig. 5 is a schematic perspective view of the structure of the drum of the present application.

The specific implementation mode is as follows:

the present application will be further described with reference to the following drawings and examples.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.

Example 1

The device comprises a rotary drum, a spiral pushing assembly, a driving unit, a spiral driving device, a feeding unit, a shell, a machine base, a lubricating system and a control system.

The rotary drum comprises a whole or section-combined barrel-shaped structure, as a specific embodiment, the rotary drum comprises at least three sections of barrel-shaped structures, and comprises a first barrel, a connecting barrel and a second barrel, the diameter of the first barrel is equal to that of the second barrel, one end of the connecting barrel is fixedly connected with the first barrel, the other end of the connecting barrel is fixedly connected with the second barrel, as a more specific embodiment, the first barrel and the connecting barrel are fixed together by welding, the second barrel and the connecting barrel are fixed together by welding, or a flange plate is fixedly arranged on the periphery of the first barrel, a flange plate is also fixedly arranged on the periphery of the second barrel, a flange plate matched with the first barrel and the second barrel is also arranged on the periphery of the connecting barrel, the flange plates are butt-jointed and fixed together by bolts, and further the first barrel, the connecting barrel and the second barrel are fixed together, forming a rotating drum.

The utility model discloses a drum, including the drum, the drum is equipped with the wearing layer, as an embodiment, for example, the wearing layer chooses for use alumina ceramics wearing layer, so that improve the wearing resistance of drum inner periphery, avoid the frequent maintenance of drum, and improve the life of drum, be provided with the frame at the both ends of drum, and fixed mounting bearing frame on the frame, for example, fix the bottom plate of bearing frame on the frame through the bolt, the bearing frame, as the name implies, install the seat platform of bearing promptly, as an embodiment, the bearing frame is similar with current product, all set up the through-hole on the seat platform, and install the bearing in the through-hole, make the bearing interference install in the through-hole, install the bearing apron at the both ends of through-hole.

As another embodiment, the driving unit includes a main driving motor, a central shaft, a bearing seat, a bearing, a driving motor, a gear box, a driving shaft, a gear box, a driving unit, a driving motor, a driving motor, a driving motor, a driving motor, a driving motor, a driving motor, a driving motor, a driving motor, and a driving motor, and driving a driving motor, and a driving motor, and driving a driving motor, and driving a, The output shaft of the main driving motor is connected with the auxiliary shaft assembly through the hydraulic coupler, and then the output shaft of the main driving motor drives one output shaft of the auxiliary shaft assembly to rotate, and the output shaft on the auxiliary shaft assembly drives the central shaft to rotate.

The spiral pushing assembly is arranged inside the rotary drum and comprises a spiral hub, the spiral hub is of a hollow structure and further forms a feeding chamber, the spiral hub is located at the center of the inner periphery of the rotary drum, spiral blades are arranged on the spiral hub, and further the spiral blades are driven to rotate when the spiral hub rotates.

The surface of the spiral hub is provided with a plurality of feeding holes, the feeding holes are formed along the circumferential direction of the spiral hub, as an implementation scheme, the feeding holes in the spiral hub correspond to the connecting cylinders, along with the rotation of the spiral hub, materials in the spiral hub flow into a cavity between the spiral hub and the rotary drum from the feeding holes, and concentrated ore pulp is pushed to advance by the spiral blades.

As a further embodiment, the auxiliary shaft assembly is a gear box, due to the action of the gears in the auxiliary shaft assembly, the main driving motor drives the central shaft to rotate at a relatively low speed, while the main driving motor drives the screw shaft to rotate at a relatively high speed, so that the rotation speed of the screw shaft is higher or slightly higher than that of the central shaft, and further the concentrated ore pulp deposited on the inner wall of the rotary drum is pushed to the discharge opening, and the concentrated ore pulp is thrown out of the rotary drum by centrifugal force, or a differential is mounted, so that the screw shaft is connected with the output shaft of the differential, and the input shaft of the differential is connected with one of the output shafts of the auxiliary shaft assembly, thereby realizing differential rotation of the screw shaft and the central shaft.

As another embodiment, the screw shaft is driven to rotate by a hydraulic motor device alone, the hydraulic motor device comprises a hydraulic station, a hydraulic motor, an oil pipe assembly and the like, the hydraulic motor drives the screw shaft alone and drives the screw shaft and the screw blade to rotate in a manner higher than the rotating speed of the rotary drum, and the screw driving device is formed by any one of the above various embodiments.

The feeding unit of this application includes the pan feeding pipe, the feed valve, the bleeder valve, the medicament pipe, scavenge pipe and washing water valve, the inlet pipe, spiral hub is connected to the discharging pipe, as an embodiment, the feed end of spiral shaft is connected to the inlet pipe, the discharging end of discharging pipe connection on the spiral shaft, install the feed valve on the inlet pipe, install the bleeder valve on the discharging pipe, for example, the inlet pipe is located the front end of spiral hub, the discharging pipe is located the rear end of spiral hub, the material removes to the rear end of spiral hub from the front end of spiral hub, when opening the feed valve, the material can get into spiral hub from the inlet pipe, when opening the bleeder valve, the material can be followed spiral transport hub and is gone out.

Furthermore, a cleaning pipe is arranged on the spiral hub, a medicament pipe is arranged on the spiral hub or the cleaning pipe, a cleaning water valve is arranged on the cleaning pipe, cleaning water or cleaning water is combined with a cleaning agent to further clean a cavity inside the spiral hub, the material is ore pulp to be treated, and feeding amount, flocculating agent addition and shutdown automatic cleaning can be controlled according to the operation condition of equipment.

The casing of the application comprises an upper casing, a lower casing, an inspection door and other devices, wherein the upper casing and the lower casing cover the rotary drum, for example, the upper casing and the lower casing cover the rotary drum at two ends of the rotary drum to form a discharging area, as an embodiment, the upper casing surface is fixed together with the lower casing surface facing upwards, the fixing mode comprises welding or the connecting plate of the upper casing is abutted against the connecting plate of the lower casing, the upper casing and the lower casing are fixedly connected together through bolts, the upper casing or the lower casing is provided with the inspection door, the inspection door is hinged with the upper casing or the lower casing, so that the inspection door can be opened or closed, two ends of the casing form discharging areas, the inner periphery of the discharging areas is lined with alumina ceramics or other wear-resistant materials, so that the materials in the rotary drum can be collected when discharged, the collection of concentrated ore pulp and overflow clarifying liquid comprises the steps of concentrating ore pulp, collecting the clarifying liquid, And the rotary drum is driven by a motor of the driving unit to rotate at a high speed, ore pulp is fed by the feeding unit and then rotates at a high speed along with the rotary drum, and solid particles are rapidly settled under the action of the centrifugal strength of 3000g at most. The circumference of one end of the drum concentrated solution discharge is provided with a discharge opening, and one end of the clarified solution discharge is provided with an overflow opening and an adjustable overflow weir plate.

The application describes the ejection of compact mode of the material between rotary drum and the spiral hub in detail here, at the terminal fixed mounting panel of rotary drum, and install the connecting plate on the center pin, make connecting plate one end together fixed with the center pin, the other end of connecting plate is together with mounting panel fixed connection, as an embodiment, the mounting panel includes 6, 6 mounting panels are along the central axis evenly distributed of rotary drum, and fix the mounting panel on the terminal surface of rotary drum, the differential cooperation of helical blade and rotary drum makes the clarified liquid after the separation get into the district of unloading from the discharge end, and the concentrate material is then to the opposite direction motion, and discharge the concentrate material from the discharge gate.

The frame of this application includes the frame, the bearing frame, structures such as vibration isolation subassembly, utilize the frame to support drive unit, devices such as lubricating system, and the center pin is then installed on the bearing of the bearing frame of frame, so that the rotary drum can rotate, lubricating system then includes the lubricating-oil tank, the lubricating-oil pump, the manometer, the flowmeter, oil circuit subassembly etc., install manometer and flowmeter on the oil circuit subassembly, install the lubricating-oil pump between lubricating-oil tank and oil circuit subassembly, the power that relies on the lubricating-oil pump carries the lubricating oil in the lubricating-oil tank to the bearing of equipment along the oil circuit subassembly, positions that need lubricate such as differential mechanism supply the lubricating oil, as an implementation scheme, the lubricating-oil tank can be fixed in the frame, perhaps the lubricating-oil tank can be fixed on other supports.

As a further embodiment, the intelligent detection and control system is further provided with a control system, the control system comprises a PLC control cabinet, a variable-frequency power distribution cabinet and the like, a temperature sensor and the like are installed in the rotary drum and used for detecting the temperature in the rotary drum, a torque sensor is installed on the central shaft and used for detecting the torque of the rotation of the central shaft, the PLC control cabinet is used as the center of the control system to control the starting and stopping of the driving unit, the rotary drum is protected by the sensor and the like, and then the intelligent detection and control of equipment are achieved.

The problem that this patent equipment can be solved provides a more efficient low concentration ore pulp concentration means, compares with concentrator such as traditional thickener or concentrated swirler and has the advantage that the investment is few, take up an area of for a short time, the cycle is short, compares with traditional sedimentation centrifugal device and has that throughput is big, investment and running cost are low advantage.

The equipment is particularly suitable for occasions with increased system capacity but insufficient water treatment system capacity, and can quickly realize upgrading and reconstruction of the pulp treatment capacity under the condition of not increasing civil engineering workload and occupied area. By adopting the device to pre-concentrate ore pulp, the workload of the original sedimentation concentration device can be effectively reduced, the working efficiency of the subsequent dehydration device is greatly improved, and the processing capacity of the water treatment system is finally improved.

In view of the difference of the sedimentation velocity of different particle grades, the equipment can also be used for fine particle classification application, so that the interception particle size change is realized through the adjustment of the operation parameters of the equipment, and finally the separation of different particle grades is realized, thereby being beneficial to the subsequent quality separation treatment and utilization. Based on the performance characteristics, the method can be used for grading and regrinding the coal water slurry, and the concentration of the coal water slurry is improved by improving the granularity composition of the coal water slurry, so that the combustion efficiency of the coal water slurry is improved. Meanwhile, the method can also be used in other occasions where the ore pulp needs to be independently subjected to quality-based treatment and utilization in local ore dressing process flows.

As a specific implementation scheme, the main working parameter intervals of the patented device are as follows: the diameter of the rotary drum is 600-.

The easy-to-wear parts in contact with the ore pulp in the patent equipment adopt perfect wear-resistant protection measures, and are fully applicable to minerals with strong abrasiveness.

The device can adopt the spiral independent hydraulic driving device, can realize the online adjustment of the rotary drum and the spiral differential speed, is convenient for automatically and flexibly adjusting the performance index of the device, and can further improve the running reliability and the economical efficiency of the device.

This patent equipment can also be equipped with the flocculating agent and add the interface, can improve the efficiency of subsiding through throwing the medicament to difficult material of subsiding, further reduces the running cost.

This patent equipment can realize concentration multiple automatically regulated and overload automatic adjustment function through control system and supporting sensor, has very strong pan feeding adaptability and arranges the material regulatory nature, can guarantee continuous and quantized full automatic operation.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Although the embodiments of the present application have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present application, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive effort by those skilled in the art.

Claims (10)

1. A fine ore pulp grading concentration centrifuge is characterized in that: the spiral pushing assembly comprises a spiral hub, the middle of the spiral hub is provided with a hollow structure, and the periphery of the spiral hub is provided with spiral blades;

the two ends of the rotary drum are provided with central shafts, the two ends of the spiral hub are provided with spiral shafts, the spiral shafts are connected with a spiral driving device and driven to rotate by the spiral driving device, and the central shafts are connected with a driving unit and driven to rotate by the driving unit;

the feeding pipe is arranged on the spiral hub or the spiral shaft and is communicated with the hollow structure in the spiral hub, the surface of the spiral hub is provided with a feeding hole, and the feeding hole is communicated with the hollow structure in the spiral hub and the cavity of the rotary drum, so that materials in the spiral hub enter the rotary drum along the feeding hole.

2. The fine ore pulp classifying concentrating centrifuge of claim 1, wherein said drive unit is a power take-off, said drive unit independently drives said central shaft to rotate, said screw drive is a power take-off, and said screw drive independently drives said screw shaft to rotate.

3. The fine ore slurry fractional concentration centrifuge of claim 1, wherein said screw drive and said drive unit share a set of countershaft assembly, the countershaft assembly comprising a gear box having an input shaft and at least two output shafts, the input shaft of the countershaft assembly being connected to the power take-off, one output shaft of the countershaft assembly being connected to the screw shaft, the other output shaft of the countershaft assembly being connected to the central shaft.

4. The fine ore pulp classifying and concentrating centrifuge as recited in claim 1, wherein a frame is provided outside said central shaft, a bearing seat is provided on said frame, and said central shaft is inserted into a bearing of said bearing seat.

5. The fine ore slurry fractional concentration centrifuge of claim 1, wherein said central shaft has a central cavity, said central cavity having a bearing disposed therein, said screw shaft passing through said bearing in said central cavity.

6. The fine ore pulp classifying and concentrating centrifuge as recited in claim 1, wherein said drum has a wear resistant coating disposed on an inner periphery thereof, and said helical blades have a wear resistant coating disposed on an outer periphery thereof and an inner periphery thereof.

7. The fine ore pulp classifying and concentrating centrifuge of claim 1, wherein the drum comprises at least three-segment cylindrical structure, the cylindrical structure comprising a first cylinder, a connecting cylinder and a second cylinder, the first cylinder having a diameter equal to the diameter of the second cylinder, one end of the connecting cylinder being fixedly connected to the first cylinder, the other end of the connecting cylinder being fixedly connected to the second cylinder.

8. The fine ore slurry fractional concentration centrifuge of claim 1, further comprising a feed unit, said feed unit comprising a feed pipe, a feed valve, a discharge valve, a chemical pipe, a purge pipe, and a purge water valve, wherein the feed pipe and the discharge pipe are connected to the screw hub, the feed valve is mounted on the feed pipe, and the discharge valve is mounted on the discharge pipe.

9. The fine ore pulp classifying and concentrating centrifuge as recited in claim 8, wherein said spiral hub is provided with a cleaning tube, said spiral hub or cleaning tube is provided with a chemical tube, and said cleaning tube is provided with a cleaning water valve.

10. The fine ore pulp classifying concentrating centrifuge of claim 1, wherein the rotation speed of said central shaft is less than the rotation speed of said screw shaft.

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