CN104307623B - System and method for adjusting horizontal flow in heavy-medium shallow tank - Google Patents
System and method for adjusting horizontal flow in heavy-medium shallow tank Download PDFInfo
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- CN104307623B CN104307623B CN201410575322.9A CN201410575322A CN104307623B CN 104307623 B CN104307623 B CN 104307623B CN 201410575322 A CN201410575322 A CN 201410575322A CN 104307623 B CN104307623 B CN 104307623B
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Abstract
The invention discloses a system and a method for adjusting horizontal flow in a heavy-medium shallow tank. The system comprises a heavy-medium shallow tank, a heavy-medium pump and a sculping screen; the top of the heavy-medium shallow tank is provided with a feed opening; the bottom of the heavy-medium shallow tank is provided with a residue discharge opening; the heavy-medium shallow tank is further provided with a first liquid inlet admitting inflowing of horizontal flow medium and a second liquid inlet admitting inflowing of upward flow medium; the heavy-medium pump is communicated with the first liquid inlet through a first pipeline and is communicated with the second liquid inlet through a second pipeline; a third pipeline is disposed between the first pipeline and the sculping screen; a flow control valve is disposed on the third pipeline. The system and the method have the advantages that the volume of the horizontal flow in the heavy-medium shallow tank can be controlled without adjusting the flow for the heavy-medium pump, damage of the heavy-medium pump is avoided accordingly, sculping incompleteness caused by excess flowing speed of the horizontal flow is decreased, and medium consumption increase can be eliminated.
Description
Technical field
The present invention relates to a kind of regulating system and control method, more particularly, to a kind of for adjusting dense-medium shallow-tank level stream
System and method.
Background technology
Coal preparation can fundamentally improve and improve Coal Quality, reduces the pollution that coal burning is brought.
In prior art, coal preparation mainly includes jigging, sink float, flotation, all multimodes such as dry separation, wherein, sink float
Coal is to have obtained extensively the advantages of its efficiency of separation height, separating density range of accommodation width, strong adaptability, sorting particle size range width
Application.
Dense-medium separation is sorted to coal using dense-medium shallow-tank, wherein, can float less than the light product of separating medium density
Floating over top, and flow through downflow weir with the separating medium of flowing becomes head coal product, and the material being more than Media density can sink to
The bottom of dense-medium shallow-tank, transports dense-medium shallow-tank by the scraper plate of low-speed motion.The separating medium of dense-medium shallow-tank includes level stream and upper
Up-flow, wherein, upper up-flow can suppress the sedimentation of granule, makes suspension more stable, and level stream constantly supplements separating medium, from
And ensure that the stability of density of suspending liquid.Additionally, level stream also acts as the effect driving cleaned coal flowing, so that the essence floating
Coal can be discharged by downflow weir.
In order to ensure that cleaned coal discharges in time, it usually needs increase the flow of level stream, but in actual production, due to weight
Jie's shallow slot level stream flow is excessive, separating medium amount easily leads to greatly sculping screen to alter Jie, and so that Jie is consumed increases, and increases production cost,
Impact production system items balance and stability, and reduce separating effect.Drive the flow velocity of cleaned coal for reducing level stream, it is to avoid sorting
Many negative effects that medium amount is excessive and brings, it usually needs the size to control level stream for the squeezing valve of regulation level stream.
But, if long-time control flow will produce larger abrasion to squeezing valve by adjusting squeezing valve, along with dense medium
The high density of matter sorting, this abrasion is just more serious, increased manpower and materials and material cost, or even because suppressing pump for a long time and shadow
Ring service life and the operating condition of dense medium pump.
Content of the invention
The problem existing for prior art, it is an object of the invention to provide a kind of for adjust dense-medium shallow-tank level stream be
System and method, it ensure that separating effect, reduces the damage that dense medium pump is caused, and reduces the loss of separating medium.
The purpose of the present invention is achieved through the following technical solutions：
A kind of system for adjusting dense-medium shallow-tank level stream, including dense-medium shallow-tank, dense medium pump and be arranged on described dense medium
Sculping screen between shallow slot and described dense medium pump, wherein,
The top of described dense-medium shallow-tank is provided with feeding mouth, and the bottom of described dense-medium shallow-tank is provided with slag-drip opening, described heavy
The second feed liquor rising flow medium for the first inlet of input level flow medium with for input is additionally provided with Jie's shallow slot
Mouthful；
Described dense medium pump is connected with described first inlet by the first pipeline, and described dense medium pump passes through the second pipeline and institute
State the second inlet connection, be provided with the 3rd pipeline between described first pipeline and described sculping screen, described 3rd pipeline sets
It is equipped with the valve controlling flow.
Further, it is provided with the medium bucket for storing separating medium between described sculping screen and described dense medium pump.
Further, it is provided with density monitoring device in described medium bucket.
Further, described density monitoring device is density sensor.
Further, described valve is squeezing valve.
Present invention also offers a kind of method for adjusting dense-medium shallow-tank level stream, comprise the steps：
Step is 1.：Start dense medium pump, pump into horizontal flow medium by first pipe road direction dense-medium shallow-tank, by the second pipeline
Pump into rising flow medium into dense-medium shallow-tank, described rising flow medium and described horizontal flow medium are formed in described dense-medium shallow-tank
Separating medium gravitational field；
Step is 2.：Open the valve of the 3rd pipeline being arranged between sculping screen and the first pipeline, by described first pipeline
Interior level stream medium pumps in described sculping screen；
Step is 3.：If desired increase the flow of horizontal flow medium in described first pipeline, then reduce described by valve
The flow of interior medium in three pipelines, conversely, if desired reducing the flow of horizontal flow medium in described first pipeline, then passes through valve
Increase the flow of interior medium in described 3rd pipeline；
Step is 4.：Described dense-medium shallow-tank relies on separating medium gravitational field that material is sorted, after sorting material, described point
Selected introductions mass flow enters in described sculping screen to be reclaimed；
Step is 5.：Reclaim separating medium repeat step 1.-step 4., reused.
Further, it is provided with the medium bucket for storing separating medium between described sculping screen and described dense medium pump.
Further, it is provided with density monitoring device in described medium bucket.
Further, described density monitoring device is density sensor.
Further, described valve is squeezing valve.
System and method provided by the present invention for adjusting dense-medium shallow-tank level stream does not need to adjust the flow of dense medium pump,
The size of dense-medium shallow-tank level stream just being controlled, thus avoiding the damage to dense medium pump, decreasing due to level stream medium flow field
The de-mediated that speed is too fast and leads to not exclusively, contributes to eliminating the problem that the consumption that is situated between increases.
Brief description
Fig. 1 is a kind of schematic diagram being preferably used in the system adjusting dense-medium shallow-tank level stream of the present invention；
Fig. 2 is a kind of schematic diagram being preferably used in the method adjusting dense-medium shallow-tank level stream of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings, a preferred embodiment of the present invention is described in detail.Wherein identical parts are used
Identical reference represents.It should be noted that word "front", "rear" used in describing below, "left", "right", " on "
Refer to the direction in accompanying drawing with D score, word " interior " and " outward " refer respectively to towards or away from particular elements geometric center
Direction.
As shown in figure 1, the system for adjusting dense-medium shallow-tank level stream of the offer of the present invention, including dense-medium shallow-tank 1, weight
Jie's pump 2 and be arranged on the sculping screen 3 between described dense-medium shallow-tank 1 and described dense medium pump 2.Those skilled in the art should understand that
It is that coal is divided into light product and two kinds of products of weight product, institute according to the difference of density using separating medium by described dense-medium shallow-tank 1
State dense medium pump 2 and convey qualified separating medium suspension for described dense-medium shallow-tank 1, described sculping screen 3 is in order to remove after dense medium sorting
The carried medium of product.
The top of the dense-medium shallow-tank 1 of the present invention is provided with feeding mouth, and the bottom of described dense-medium shallow-tank 1 is provided with slag-drip opening,
It is additionally provided with for the first inlet of input level flow medium on described dense-medium shallow-tank 1 and rise the of flow medium for input
Two inlets, described horizontal flow medium ensure that the stability of separating medium density, carries cleaned coal simultaneously and discharges dense-medium shallow-tank
1, described rising flow medium helps avoid described separating medium suspension and produces precipitation, thus improving separating medium suspension
Stability and homogeneity, it is to avoid the filter medium clogging pipeline in suspension.
The dense-medium shallow-tank 1 of the present invention preferably includes cell body, discharge refuse scraper plate and its driving means, during use, first passes through
Feeding mouth adds coal to be sorted into described dense-medium shallow-tank, and described dense-medium shallow-tank 1 is situated between in sorting according to Archimedes principle
In the gravitational field that matter suspension is formed, coal is sorted, can swim in less than the light product of separating medium density of suspending liquid
Top is simultaneously flow through downflow weir and is become head coal product with the separating medium suspension of flowing；Thing more than separating medium density of suspending liquid
Material can sink to the bottom of dense-medium shallow-tank 1, discharges described dense-medium shallow-tank 1 by the discharge refuse scraper plate of low-speed motion by slag-drip opening.
The dense medium pump 2 of the present invention is connected with described first inlet by the first pipeline 4, and described dense medium pump 2 passes through second
Pipeline 5 is connected with described second inlet, is provided with the 3rd pipeline 6 between described first pipeline 4 and described sculping screen 3, described
The valve 7 controlling flow is provided with the 3rd pipeline 6, described valve 7 is preferably squeezing valve.Qualified separating medium suspension
Pumped in described dense-medium shallow-tank 1 in the form of horizontal flow medium by described first pipeline 4, and by described second pipeline 5 with
The form rising flow medium pumps in described dense-medium shallow-tank 1, and described 3rd pipeline 6 is by level stream in described first pipeline 4
The shunting of medium is realizing the control of the flow of horizontal flow medium in dense-medium shallow-tank 1.
During production, if the amount processing material in described dense-medium shallow-tank 1 is more, the flow of horizontal flow medium is less, needs to increase
Add water advection medium flow when, valve 7 can be turned down, enter the lower qualified medium of sculping screen 3 sieve and collect chute by reducing
Flow, to increase enter the horizontal flow medium of dense-medium shallow-tank 1 flow；If conversely, the flow of the horizontal flow medium of dense-medium shallow-tank 1
Larger, lead to de- medium effectiveness poor, the consumption that is situated between is high, need the horizontal flow medium of reduction flow when, valve 7 can be opened greatly, increase into
Enter the flow that the lower qualified medium of sculping screen 3 sieve collects chute, thus reach and reducing the damage that dense medium pump 2 is caused and reduce shallow
The purpose of groove 1 level stream rate-of flow.
As a preferred embodiment of the present invention, it is provided between described sculping screen 3 and described dense medium pump 2 for storage point
The medium bucket of selected introductions matter, consequently facilitating dense medium pump 2 stably can pump into qualified separating medium into dense-medium shallow-tank 1 suspend
Liquid.
In order to effectively be monitored to the density in medium bucket, present invention density of setting prison preferably in described medium bucket
Survey device.It will be understood by those skilled in the art that work as the density of suspension in density monitoring device pairing Jie's bucket being supervised
During survey, easily generation monitoring is delayed, and then leads to the delayed of Auto-regulating System of Density of Heavy Medium, has a strong impact on the Auto-regulating System of Density of Heavy Medium of suspension in medium bucket
Precision and stability, ultimately cause the unstable of the product of coal quality sub-electing.In order to solve such problem, the present invention is preferred
Density monitoring device is arranged on the discharging opening of medium bucket by ground, so that suspension is sufficiently mixed in medium bucket, monitoring is flowed out
The density of the mixed suspension of medium bucket is it is ensured that the accuracy of measuring density and promptness.
It is highly preferred that described density monitoring device is density sensor, people in the art should be understood that above-mentioned close
Degree sensor is only a preferred embodiment of the present invention, and the present invention can also adopt people in the art according to actual installation situation
Member institute familiar to be suitable for monitoring suspension density other devices, here is omitted.
As shown in Fig. 2 present invention also offers a kind of method for adjusting dense-medium shallow-tank level stream, walking including following
Suddenly：
Step is 1.：Start dense medium pump 2, horizontal flow medium is pumped into into dense-medium shallow-tank 1 by the first pipeline 4, by second
Pipeline 5 pumps into rising flow medium into dense-medium shallow-tank 1, and described rising flow medium and described horizontal flow medium are in described dense-medium shallow-tank
Form separating medium gravitational field in 1；
Step is 2.：Open the valve 7 of the 3rd pipeline 6 being arranged between sculping screen 3 and the first pipeline 4, by described first
Level stream medium in pipeline 4 pumps in described sculping screen 3；
Step is 3.：If desired increase the flow of horizontal flow medium in described first pipeline 4, then reduced by valve 7 described
The flow of interior medium in 3rd pipeline 6, conversely, if desired reducing the flow of horizontal flow medium in described first pipeline 4, then passes through
Valve 7 increases the flow of interior medium in described 3rd pipeline 6；
Step is 4.：Described dense-medium shallow-tank 1 relies on separating medium gravitational field that material is sorted, after sorting material, described
Separating medium flows in described sculping screen 3 and is reclaimed；
Step is 5.：Reclaim separating medium repeat step 1.-step 4., reused.
It can be seen that, the method provided by the present invention for adjusting dense-medium shallow-tank level stream does not need to adjust the flow of dense medium pump,
The size of dense-medium shallow-tank level stream just being controlled, thus avoiding the damage to dense medium pump, decreasing due to level stream medium flow field
The de-mediated that speed is too fast and leads to not exclusively, contributes to eliminating the problem that the consumption that is situated between increases.
As a preferred embodiment of the present invention, it is provided between described sculping screen 3 and described dense medium pump 2 for storage point
The medium bucket of selected introductions matter, consequently facilitating dense medium pump 2 stably can pump into qualified separating medium into dense-medium shallow-tank 1 suspend
Liquid.
In order to effectively be monitored to the density in medium bucket, present invention density of setting prison preferably in described medium bucket
Survey device.It will be understood by those skilled in the art that work as the density of suspension in density monitoring device pairing Jie's bucket being supervised
During survey, easily generation monitoring is delayed, and then leads to the delayed of Auto-regulating System of Density of Heavy Medium, has a strong impact on the Auto-regulating System of Density of Heavy Medium of suspension in medium bucket
Precision and stability, ultimately cause the unstable of the product of coal quality sub-electing.In order to solve such problem, the present invention is preferred
Density monitoring device is arranged on the discharging opening of medium bucket by ground, so that suspension is sufficiently mixed in medium bucket, monitoring is flowed out
The density of the mixed suspension of medium bucket is it is ensured that the accuracy of measuring density and promptness.
It is highly preferred that described density monitoring device is density sensor, people in the art should be understood that above-mentioned close
Degree sensor is only a preferred embodiment of the present invention, and the present invention can also adopt people in the art according to actual installation situation
Member institute familiar to be suitable for monitoring suspension density other devices, here is omitted.
Above-mentioned steps 2. in, described valve 7 is preferably by squeezing valve, it will be understood by those skilled in the art that squeezing
Pressure valve is only a kind of preferred version for controlling the 3rd piping flow size of the present embodiment, and the present invention can also adopt ability
Other type valves of the suitable control separating medium Fibre Suspensions well known to field technique personnel, here is omitted.
Finally it should be noted that：Above example only in order to technical scheme to be described, is not intended to limit；Although
With reference to the foregoing embodiments the present invention is described in detail, it will be understood by those within the art that：It still may be used
To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to wherein some technical characteristics；
And these modifications or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a kind of system for adjusting dense-medium shallow-tank level stream is it is characterised in that including dense-medium shallow-tank, dense medium pump and being arranged on
Sculping screen between described dense-medium shallow-tank and described dense medium pump, wherein,
The top of described dense-medium shallow-tank is provided with feeding mouth, and the bottom of described dense-medium shallow-tank is provided with slag-drip opening, and described dense medium is shallow
The second inlet rising flow medium for the first inlet of input level flow medium with for input is additionally provided with groove；
Described dense medium pump is connected with described first inlet by the first pipeline, and described dense medium pump passes through the second pipeline and described the
Two inlet connections, are provided with the 3rd pipeline, described 3rd pipeline are provided between described first pipeline and described sculping screen
Control the valve of flow；
Described 3rd pipeline is situated between by the shunting of horizontal flow medium in described first pipeline is realized with level stream in dense-medium shallow-tank
The control of the flow of matter；
If desired increase the flow of horizontal flow medium in described first pipeline, then interior Jie in described 3rd pipeline is reduced by valve
The flow of matter, conversely, if desired reducing the flow of horizontal flow medium in described first pipeline, then increases the described 3rd by valve
The flow of interior medium in pipeline.
2. the system for adjusting dense-medium shallow-tank level stream according to claim 1 it is characterised in that described sculping screen and
It is provided with the medium bucket for storing separating medium between described dense medium pump.
3. the system for adjusting dense-medium shallow-tank level stream according to claim 2 is it is characterised in that in described medium bucket
It is provided with density monitoring device.
4. the system for adjusting dense-medium shallow-tank level stream according to claim 3 is it is characterised in that described measuring density
Device is density sensor.
5. the system for adjusting dense-medium shallow-tank level stream according to any one of claim 1-4 is it is characterised in that described
Valve is squeezing valve.
6. a kind of method for adjusting dense-medium shallow-tank level stream is it is characterised in that comprise the steps：
Step is 1.：Start dense medium pump, pump into horizontal flow medium by first pipe road direction dense-medium shallow-tank, by second pipe road direction weight
Rising flow medium is pumped into, described rising flow medium and described horizontal flow medium form sorting in described dense-medium shallow-tank in Jie's shallow slot
Medium gravity field；
Step is 2.：Open the valve of the 3rd pipeline being arranged between sculping screen and the first pipeline, by described first pipeline
Level stream medium pumps in described sculping screen；
Step is 3.：If desired increase the flow of horizontal flow medium in described first pipeline, then described 3rd pipe is reduced by valve
The flow of interior medium in road, conversely, if desired reducing the flow of horizontal flow medium in described first pipeline, is then increased by valve
The flow of interior medium in described 3rd pipeline；
Step is 4.：Described dense-medium shallow-tank relies on separating medium gravitational field that material is sorted, and after sorting material, described sorting is situated between
Mass flow enters in described sculping screen to be reclaimed；
Step is 5.：Reclaim separating medium repeat step 1.-step 4., reused.
7. the method for adjusting dense-medium shallow-tank level stream according to claim 6 it is characterised in that described sculping screen and
It is provided with the medium bucket for storing separating medium between described dense medium pump.
8. the method for adjusting dense-medium shallow-tank level stream according to claim 7 is it is characterised in that in described medium bucket
It is provided with density monitoring device.
9. the method for adjusting dense-medium shallow-tank level stream according to claim 8 is it is characterised in that described measuring density
Device is density sensor.
10. the method for adjusting dense-medium shallow-tank level stream according to any one of claim 6-9 is it is characterised in that institute
Stating valve is squeezing valve.
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| CN201410575322.9A CN104307623B (en) | 2014-10-24 | 2014-10-24 | System and method for adjusting horizontal flow in heavy-medium shallow tank |
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| CN201410575322.9A CN104307623B (en) | 2014-10-24 | 2014-10-24 | System and method for adjusting horizontal flow in heavy-medium shallow tank |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106140451B (en) * | 2016-08-29 | 2018-07-20 | 宋文革 | A kind of Separator of heavy medium shallow slot upper up-flow anti-blocking method and device |
| CN113210122B (en) * | 2021-04-27 | 2023-03-24 | 国能包头能源有限责任公司 | Heavy-medium shallow slot sorting machine and sorting method using same |
| CN113908970B (en) * | 2021-09-26 | 2024-04-26 | 中国矿业大学 | System for dense medium shallow slot intelligent regulation dense medium density based on machine vision |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB597871A (en) * | 1942-08-22 | 1948-02-05 | Victor Rakowsky | Improvements in gravity separation of materials |
| GB1498767A (en) * | 1976-04-15 | 1978-01-25 | Siebtech Gmbh | Refuse sorting process and plant |
| CN201257735Y (en) * | 2008-06-20 | 2009-06-17 | 宁波千普机械制造有限公司 | Rubber injection molding machine |
| CN101837320B (en) * | 2010-04-09 | 2013-04-03 | 芬雷选煤工程技术(北京)有限公司 | Heavy medium coal preparation control equipment, density control system thereof and density control method |
| CN203155348U (en) * | 2013-03-06 | 2013-08-28 | 泰戈特（北京）工程技术有限公司 | Heavy-medium shallow slot and heavy-medium swirler separation system utilizing single medium |
| CN203124088U (en) * | 2013-03-22 | 2013-08-14 | 滨海金地矿业工程技术(北京)有限公司 | Lump coal and slack coal separating equipment with lump coal and slack coal combined medium bucket |
| CN103611721B (en) * | 2013-12-04 | 2016-03-02 | 中联重科物料输送设备有限公司 | Hydraulic separator and building waste material resource utilization system |
| CN103752400B (en) * | 2013-12-20 | 2016-03-30 | 中国神华能源股份有限公司 | A kind of Apparatus and method for controlling dense-medium separation suspension |
| CN104289304B (en) * | 2014-09-15 | 2017-01-11 | 中国神华能源股份有限公司 | Qualified medium barrel dilute medium water complementing system and method used for dense-medium coal preparation |
| CN204194115U (en) * | 2014-10-24 | 2015-03-11 | 中国神华能源股份有限公司 | A kind of for regulating the system of dense-medium shallow-tank horizontal flow |
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