CN112058479A - Two-section separation density regulating device and method for three-product heavy medium cyclone - Google Patents
Two-section separation density regulating device and method for three-product heavy medium cyclone Download PDFInfo
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- CN112058479A CN112058479A CN202010913085.8A CN202010913085A CN112058479A CN 112058479 A CN112058479 A CN 112058479A CN 202010913085 A CN202010913085 A CN 202010913085A CN 112058479 A CN112058479 A CN 112058479A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
- B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
- B03B5/32—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions using centrifugal force
- B03B5/34—Applications of hydrocyclones
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C11/00—Accessories, e.g. safety or control devices, not otherwise provided for, e.g. regulators, valves in inlet or overflow ducting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C7/00—Apparatus not provided for in group B04C1/00, B04C3/00, or B04C5/00; Multiple arrangements not provided for in one of the groups B04C1/00, B04C3/00, or B04C5/00; Combinations of apparatus covered by two or more of the groups B04C1/00, B04C3/00, or B04C5/00
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Abstract
The invention discloses a device and a method for regulating and controlling the two-section separation density of a three-product heavy medium cyclone, belonging to the technical field of coal separation. The online quick control of the separation density is realized, the quality of the middlings products output by the second-stage cyclone is quickly controlled, the separation efficiency is greatly improved, the quality of the second-stage middlings products is stable, the amount of the gangue is reduced, the coal carrying rate of the second-stage gangue products is reduced, and the gangue is purer. And simultaneously, the problem of blockage of connecting pipes of the first-stage cyclone and the second-stage cyclone is reduced.
Description
Technical Field
The invention relates to a density regulating device and a density regulating method, in particular to a two-section separation density regulating device and a two-section separation density regulating method of a three-product dense medium cyclone, which are used in dense medium coal separation in the technical field of coal separation.
Background
The non-pressure (pressure) feeding three-product heavy medium cyclone coal separation technology is a coal separation technology widely applied in China at present, and in long-term practical application, the three-product cyclone shows some outstanding advantages, and has the advantages of small floor area, convenient operation, simple structure, less investment, high separation efficiency, easy realization of automatic control and the like. Meanwhile, the three-product heavy medium cyclone has some defects, for example, the three-product heavy medium cyclone has the problems that the middlings are provided with more waste rocks or the waste rocks are provided with more coal, and the quality of the middlings cannot be effectively regulated and controlled due to the fact that the separation density of the two-stage cyclone cannot be timely regulated. At present, the two-stage density adjustment of the three-product heavy medium cyclone is generally realized by changing the diameter of a underflow port and the insertion depth of an overflow pipe of a two-stage cyclone, and the two-stage cyclone separation density adjustment methods are that the underflow port needs to be replaced after production stop, the density adjustment range is limited, the separation density can only be finely adjusted, and the three-stage heavy medium cyclone is frequently abraded and rusted seriously, and is difficult to operate. Therefore, when the feeding material of the three-product dense medium cyclone is changed or the quality of the middlings product of the second-stage cyclone is required to be changed, the separation density of the second-stage cyclone cannot be adjusted in time, and the density adjusting range is limited.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a device and a method for regulating and controlling the two-section separation density of a three-product dense medium cyclone.
The technical scheme is as follows: in order to achieve the purpose, the two-section separation density regulating device of the three-product heavy medium cyclone is arranged between a first-section cyclone and a second-section cyclone, and is characterized in that: the connecting pipe comprises a connecting pipe with an arc structure, the radian of the connecting pipe is 15-90 degrees, a replenishing pipe is arranged on an arc pipe body of the connecting pipe, one end of the replenishing pipe is connected with the connecting pipe, a check valve and a flow regulation and control system are arranged at the other end of the replenishing pipe, the replenishing pipe is connected with the connecting pipe along the tangential direction or the asymptote direction, so that the internal fluid resistance of the replenishing pipe is reduced, the disorder of material flow in the connecting pipe is avoided, the connecting pipe is effectively prevented from being blocked, and the check valve and the flow regulation and control system are used for controlling the amount of replenishing.
The replenishing pipe is connected with the connecting pipe along the tangential direction or the asymptote direction, so that the water or the medium in the replenishing pipe and the discharged material of the first-stage cyclone are fed into the second-stage cyclone together, and the separation density in the second-stage cyclone is adjusted.
The distance between the mounting position of the supplementing pipe on the connecting pipe and the discharge port of the first-stage cyclone is larger than 5cm, and the distance between the supplementing pipe and the feeding port of the second-stage cyclone is larger than 10cm, so that the water or the medium supplemented by the supplementing pipe and the material flow discharged to the second-stage cyclone by the first-stage cyclone are uniformly mixed, and the phenomenon that the supplementing water or the medium enters the second-stage cyclone without mixing so as to interfere the separation of the second-stage cyclone is avoided.
The replenishing pipe is detachable and replaceable in material, or is integrally processed with the connecting pipe.
The pipe diameter of the supplementing pipe is 0.1-1.0 time of the width of the section of the connecting pipe.
The pipe diameter of the replenishing pipe can be changed according to the selection of raw material coal and the density regulation and control requirement.
The flow regulating and controlling system is a valve with a flowmeter and a pressurizing device, can accurately control the amount of water or medium added to the replenishing pipe, can set and adjust the flow of the replenishing pipe in real time through calculation, can be quickly assembled and disassembled on outlets of different medium containers, and is convenient to adjust the type of the replenished water or medium at any time, so that the aim of diluting and thickening materials in the two-stage cyclone is fulfilled, or new slurry components are quickly added according to the requirement, and the aim of quickly mixing and quickly responding is fulfilled.
The check valve and the flow regulating and controlling system can be detached and replaced, the replenishing pipe can be connected with a plurality of different material pipes according to needs, and each material pipe is independently provided with the flow regulating and controlling system.
A working method of a two-section separation density regulating device of a three-product heavy medium cyclone comprises the following steps:
the method comprises the steps of dismantling a pipeline between a first-section cyclone and a second-section cyclone in the existing sorting system, installing a connecting pipe between an outlet of the first-section cyclone and an inlet of the second-section cyclone, arranging an additional pipe between the connecting pipe and an outlet of a medium barrel, adjusting the position and the radian of the additional pipe so as to ensure that a medium entering the connecting pipe through the additional pipe cannot be blocked, arranging a flow regulating and controlling system between the outlet of the medium barrel and the additional pipe, controlling the flow and the flow speed of the medium input into the connecting pipe by the medium barrel through controlling the flow regulating and controlling system, so as to regulate the input medium at any time according to needs, mixing the input medium and a material input into the connecting pipe by the first-section cyclone so as to quickly change the concentration or mix a new medicament, and finally entering the second-section.
Has the advantages that: the invention achieves the aim of regulating and controlling the separation density of the second-stage cyclone by installing the replenishing pipe on the connecting pipe between the first-stage cyclone and the second-stage cyclone, replenishing a certain amount of water or medium by using the flow regulating and controlling system on the replenishing pipe, and regulating the density of the medium entering the second-stage cyclone. The online quick regulation and control can be realized, the middlings product quality of two-stage cyclone output can realize quick regulation and control, improves separation efficiency greatly, and two-stage middlings product quality is stable, takes the waste rock volume to reduce, and the waste rock product of two-stage reduces with the coal rate, and the waste rock is purer. The method is stable and reliable, simple to operate and wide in practicability, and is particularly suitable for regulating and controlling the two-section separation density of the three-product heavy medium cyclone.
This application has added a moisturizing pipe on the connecting pipe, can in time adjust two-stage process swirler's separation density, and this moisturizing pipe can accomplish accurate regulation and control in succession according to the inside volume of selecting separately density control benefit water or medium of two-stage process swirler, can also prevent that the connecting pipe from blockking up, this application flow regulation and control device is small, does not influence two-stage process swirler pan feeding state, disturbs for a short time, can be used for reforming transform old equipment simultaneously, and the function of the old equipment of extension can quick replacement medium source simultaneously, realizes the purpose of quick adjustment.
Drawings
FIG. 1 is a schematic structural diagram of a two-stage separation density control device of a three-product dense medium cyclone.
FIG. 2 is an installation schematic diagram of a two-stage separation density regulating device of a three-product dense medium cyclone.
In the figure: a connecting pipe-1, a replenishing pipe-2, a check valve-3, a flow regulating system-4, a two-section swirler-5 and a one-section swirler-6
Detailed Description
The invention is further described with reference to the following figures and examples.
As shown in figures 1 and 2, the two-section separation density regulating device of the three-product dense medium cyclone of the invention is arranged between a first-section cyclone 6 and a second-section cyclone 5 and comprises a connecting pipe 1 with an arc structure, the radian of the connecting pipe 1 is 15-90 degrees, an arc pipe body of the connecting pipe 1 is provided with a replenishing pipe 2, one end of the replenishing pipe 2 is connected with the connecting pipe 1, the replenishing pipe 2 is detachable and has replaceable materials or is processed into a whole with the connecting pipe 1, the other end of the replenishing pipe is provided with a check valve 3 and a flow regulating system 4, the replenishing pipe 2 is connected with the connecting pipe 1 along the tangential direction or the asymptotic direction, thereby reducing the fluid resistance inside the replenishing pipe 2, avoiding the disorder of material flow in the connecting pipe 1, simultaneously effectively preventing the connecting pipe 1 from being blocked, the replenishing pipe 2 is connected with the connecting pipe 1 along the tangential direction or the asymptotic direction, so that the water or the medium in the replenishing pipe, thereby adjusting the separation density inside the two-section swirler 5, the check valve 3 and the flow control system 4 are used for controlling the amount of water or medium added to the supplementing pipe 2, the check valve 3 can prevent the material from flowing back to pollute the medium, the flow control system 4 is a valve with a flowmeter and a pressurizing device, the amount of the water or medium added to the supplementing pipe 2 can be accurately controlled, the flow of the supplementing pipe 2 can be set and adjusted in real time through calculation, and can be quickly assembled and disassembled on different medium container outlets, the supplemented water or medium type can be conveniently adjusted at any time, thereby diluting and thickening the material in the two-section swirler 5, or quickly adding new slurry components according to the requirement, thereby achieving the purpose of quick mixing and quick response, the check valve 3 and the flow control system 4 can be disassembled and replaced, and the supplementing pipe 2 can be connected with a plurality of different material pipes according to the requirement, and each material pipe is independently provided with a flow regulating and controlling system 4.
The distance between the mounting position of the supplementing pipe 2 on the connecting pipe 1 and the discharge hole of the first-stage cyclone 6 is larger than 5cm, the distance between the supplementing pipe 2 and the feeding hole of the second-stage cyclone is larger than 10cm, so that the supplemented water or medium and the material flow discharged from the first-stage cyclone 6 to the second-stage cyclone 5 are uniformly mixed, the phenomenon that the material flow enters the second-stage cyclone 5 without mixing is avoided, the supplemented water or medium interferes with the separation of the second-stage cyclone 5, the pipe diameter of the supplementing pipe 2 is 0.1-1.0 times of the section width of the connecting pipe 1, and the pipe diameter of the supplementing pipe 2 can be replaced according to the raw material coal selectivity and the density.
A working method of a two-section separation density regulating device of a three-product heavy medium cyclone comprises the following steps:
the pipeline between the first-stage cyclone 6 and the second-stage cyclone 5 in the existing separation system is removed, a connecting pipe 1 is arranged between the outlet of the first-stage cyclone 6 and the inlet of the second-stage cyclone 5, and a replenishing pipe 2 is arranged between the connecting pipe 1 and the outlet of the medium cylinder, and the position and the radian of the replenishing pipe 2 are adjusted, so that the medium entering the connecting pipe 1 through the replenishing pipe 2 can not be blocked, a flow regulating system 4 is arranged between the outlet of the medium cylinder and the supplementing pipe 2, the flow and the flow speed of the medium input into the connecting pipe 1 by the medium cylinder are controlled by controlling the flow regulating system 4, therefore, the input medium is adjusted at any time according to the requirement, the input medium and the material input into the connecting pipe 1 by the first-section cyclone 6 are mixed, so that the concentration is changed or new medicament is mixed rapidly, and finally the material which is uniformly mixed and is subjected to concentration change or is mixed with the material of the new medicament enters the second-section cyclone 5.
Example (b):
when the cyclone operates, when the separation density of the second-stage cyclone 5 is too high, the flow control system 4 controls the flow to feed low-density suspension or circulating water through the replenishing pipe 2, so that the separation density of the second-stage cyclone 5 is reduced, and when the separation density of the second-stage cyclone 5 is too low, the flow control system 4 controls the flow to feed high-density suspension through the replenishing pipe 2, so that the separation density of the second-stage cyclone 5 is improved, and the regulation and control of the separation density of the second-stage cyclone 5 are realized.
The invention is composed of a connecting pipe 1, a replenishing pipe 2, a check valve 3 and a flow regulating system 4 of one section and two sections of a swirler, wherein the replenishing pipe is arranged on the connecting pipe and can be connected with the connecting pipe along the tangential direction or the asymptote direction, and the check valve and the flow regulating system are arranged on the replenishing pipe, so that the amount of replenishing water and a medium can be controlled, and simultaneously, the water and the medium are prevented from flowing backwards. The supplementing pipe can be installed at any angle along the connecting pipe, so that the feeding direction of water or medium in the supplementing pipe is the same as the flow direction of suspension liquid in the secondary cyclone, and the separation effect of the secondary cyclone is ensured.
The invention can adjust the inflow water or medium amount through the flow control system, and the adjustment of the inflow water or medium amount is continuous, thereby the separation density in the second-stage cyclone is continuously changed, the separation density can be quickly adjusted in time under the condition that the production index is changed, the high-efficiency and high-precision separation of the gangue of the middling coal is realized, the quality of the second-stage middling coal product is stable, the amount of the gangue is reduced, the coal carrying rate of the second-stage gangue product is reduced, and the gangue is purer. The invention has the advantages of simple structure, high adjusting efficiency, wide application range, high economic benefit and the like.
Claims (9)
1. The utility model provides a density regulation and control device is selected separately to three products dense medium cyc lone two sections, sets up between one section swirler (6) and two sections swirler (5), its characterized in that: it includes the connecting pipe (1) of arc structure, and the radian of connecting pipe (1) is 15-90, is equipped with on the curved tube body of connecting pipe (1) and adds pipe (2), adds pipe (2) one end and is connected with connecting pipe (1), and the other end is equipped with check valve (3) and flow regulation and control system (4), it is connected with connecting pipe (1) along tangential direction or asymptote direction to add pipe (2) to the reduction adds the inside fluid resistance of pipe (2), and avoids arousing the confusion of the interior material stream of connecting pipe (1), effectively prevents connecting pipe (1) to take place to block up simultaneously, and check valve (3) and flow regulation and control system (4) are used for controlling and add the volume of water or medium in adding of pipe (2).
2. The two-stage separation density regulating device of the three-product heavy medium cyclone according to claim 1, characterized in that: the replenishing pipe (2) is connected with the connecting pipe (1) along the tangential direction or the asymptote direction, so that water or medium in the replenishing pipe and the discharge of the first-stage cyclone (1) are fed into the second-stage cyclone (5) together, and the separation density in the second-stage cyclone (5) is adjusted.
3. The two-stage separation density regulating device of the three-product heavy medium cyclone according to claim 1, characterized in that: the distance between the mounting position of the supplementing pipe (2) on the connecting pipe (1) and the discharge opening of the first-stage cyclone (6) is larger than 5cm, the distance between the supplementing pipe (2) and the feeding opening of the second-stage cyclone is larger than 10cm, so that the water or the medium supplemented through the supplementing pipe (2) and the material flow discharged from the first-stage cyclone (6) to the second-stage cyclone (5) are uniformly mixed, and the phenomenon that the water or the medium enters the second-stage cyclone (5) without mixing is avoided, so that the supplementing water or the medium interferes with the separation of the second-stage cyclone (5.
4. The two-stage separation density regulating device of the three-product heavy medium cyclone according to claim 1, characterized in that: the replenishing pipe (2) is detachable and replaceable in material, or is integrally processed with the connecting pipe (1).
5. The two-stage separation density regulating device of the three-product heavy medium cyclone according to claim 1, characterized in that: the pipe diameter of the supplementing pipe (2) is 0.1-1.0 times of the section width of the connecting pipe (1).
6. The two-stage separation density regulating device of the three-product heavy medium cyclone according to claim 1, characterized in that: the pipe diameter of the replenishing pipe (2) can be changed according to the selection of raw material coal and the density regulation and control requirement.
7. The two-stage separation density regulating device of the three-product heavy medium cyclone according to claim 1, characterized in that: the flow regulating and controlling system (4) is a valve with a flowmeter and a pressurizing device, can accurately control the amount of water or medium added to the replenishing pipe (2), can set and adjust the flow of the replenishing pipe (2) in real time through calculation, can be quickly assembled and disassembled on outlets of different medium containers, and is convenient to adjust the type of the replenished water or medium at any time, so that the aim of diluting and thickening materials in the two-section cyclone (5) is fulfilled, or new slurry components are quickly added according to needs, and the aim of quickly mixing and quickly responding is fulfilled.
8. The two-stage separation density regulating device of the three-product heavy medium cyclone according to claim 1, characterized in that: check valve (3) and flow control system (4) are removable to can be as required will supplement pipe (2) and many different material union couplings, and all be equipped with flow control system (4) alone on every material pipe.
9. A working method of a two-section separation density regulating device of a three-product heavy medium cyclone is characterized by comprising the following steps:
the method comprises the steps of dismantling a pipeline between a first-section cyclone (6) and a second-section cyclone (5) in the existing sorting system, installing a connecting pipe (1) between the outlet of the first-section cyclone (6) and the inlet of the second-section cyclone (5), arranging a replenishing pipe (2) between the connecting pipe (1) and the outlet of a medium cylinder, adjusting the position and the radian of the replenishing pipe (2), so as to ensure that a medium entering the connecting pipe (1) through the replenishing pipe (2) cannot be blocked, arranging a flow regulating and controlling system (4) between the outlet of the medium cylinder and the replenishing pipe (2), controlling the flow and the flow velocity of the medium input into the connecting pipe (1) through controlling the flow regulating and controlling system (4), so as to regulate the input medium at any time according to requirements, mixing the input medium with a material input into the connecting pipe (1) by the first-section cyclone (6) to rapidly change the, and finally, the materials which are uniformly mixed and have changed concentration or are mixed with new medicament enter a second-stage cyclone (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010913085.8A CN112058479A (en) | 2020-09-03 | 2020-09-03 | Two-section separation density regulating device and method for three-product heavy medium cyclone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010913085.8A CN112058479A (en) | 2020-09-03 | 2020-09-03 | Two-section separation density regulating device and method for three-product heavy medium cyclone |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113304877A (en) * | 2021-05-28 | 2021-08-27 | 中煤(天津)地下工程智能研究院有限公司 | Three-product dense medium cyclone two-section separation density and pressure online regulation and control method |
| CN113399131A (en) * | 2021-05-28 | 2021-09-17 | 江西理工大学 | Vortex symmetrical feeding water conservancy swirler |
| CN115889005A (en) * | 2023-03-09 | 2023-04-04 | 天津美腾科技股份有限公司 | Non-pressure three-product heavy medium cyclone and regulation and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113304877A (en) * | 2021-05-28 | 2021-08-27 | 中煤(天津)地下工程智能研究院有限公司 | Three-product dense medium cyclone two-section separation density and pressure online regulation and control method |
| CN113399131A (en) * | 2021-05-28 | 2021-09-17 | 江西理工大学 | Vortex symmetrical feeding water conservancy swirler |
| CN115889005A (en) * | 2023-03-09 | 2023-04-04 | 天津美腾科技股份有限公司 | Non-pressure three-product heavy medium cyclone and regulation and control method thereof |
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Application publication date: 20201211 |
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