CN208944364U - A kind of liquid level detection device and control system for flotation cell - Google Patents
A kind of liquid level detection device and control system for flotation cell Download PDFInfo
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- CN208944364U CN208944364U CN201821691906.2U CN201821691906U CN208944364U CN 208944364 U CN208944364 U CN 208944364U CN 201821691906 U CN201821691906 U CN 201821691906U CN 208944364 U CN208944364 U CN 208944364U
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- liquid level
- flotation
- level detection
- flotation cell
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Abstract
The utility model discloses a kind of liquid level detection device for flotation cell, flotation cell includes flotation liquid level, flotation froth is covered on the flotation liquid level, the liquid level detection device includes the instrument wind purge unit and liquid level detection unit set on the flotation cell side, the instrument wind purge unit purges the flotation froth and the flotation fluid is made to show out a part, and the liquid level detection unit detects liquid level by the part that flotation fluid in the flotation cell is showed out.The utility model also provides a kind of control system and its control method using the liquid level detection device.Liquid level detection device provided by the utility model is provided with instrument wind purge unit, flotation froth can be blown open, expose a part of flotation liquid level, influence of the flotation froth to level gauging can be reduced, it can also influence to avoid crystal to contact fluid level measuring instrument table, it realizes on-line real-time measuremen, provides possibility for the Automatic Control of technique.
Description
Technical field
The utility model relates to chemical equipment technical fields, and in particular to a kind of liquid level detection device for flotation cell,
And control system.
Background technique
Potassium is the grain of grain, is one of three big nutrients needed for cereal crops, the effective use of potassium resource and is opened
Hair plays a crucial role the development of China's agricultural, and has gone up as national strategy.Potassium is usually associated minerals, potassium with sodium
Excessive sodium injures crops larger in fertilizer, so the quality in order to guarantee potash fertilizer, potash fertilizer production industry often pass through flotation cell
Sodium in potassium mine is removed.
In floatation process, floating agent is added into flotation cell in pulp conveying, and is stirred, floating agent
The hydrophobicity on the increase sodium surface of selectivity, when blasting air in ore pulp, the water layer on sodium surface ruptures rapidly simultaneously and bubble is tight
It thickly combines and rises to ore pulp surface, is i.e. flotation froth of the formation containing sodium, recycle froth paddle to scrape flotation froth floating
Slot is selected, to complete the process of removing sodium impurity, and is not attached to bubble to rise, stay in flotation cell to be exactly low sodium slurry,
Subsequent processing operations are delivered to by the underflow valve of flotation trench bottom again.
Flotation cell as removal of impurities key equipment, an important parameter be exactly between flotation liquid level and flotation cell overflow port away from
From L, if distance L is too small, froth paddle is easy to scrape the sodium slurry that drops, and just has lost a large amount of potassium in this way, causes material unrestrained
Take；If distance L is excessive, flotation froth is not scraped timely, and not only production efficiency is low, but also flotation froth is in flotation
The residence time too long can also take away a part of potassium in slot.Therefore, the control of distance L is most important.
In actual production, when measuring the liquid level of flotation liquid level, frequently with contact floating ball or float level meter or non-connect
Touch radar level gauge, but since ore pulp is saturated bittern, easily salt crust, operating condition is complicated, according to contact floating ball or floating drum
Liquidometer measures after a period of time on float easily salt crust, and salt deposit constantly thickeies, and seriously affects the measurement of liquid level；If adopting
With un-contact radar liquid level meter, one layer of flotation froth is covered on low sodium slurry, and the dielectric of low sodium slurry and flotation froth is normal
Number is close, therefore is difficult to accurately measure the liquid level of flotation liquid level.Therefore, existing level gauging instrument is impracticable, if by
The monitoring of operator manually adjusts underflow valve, not only considerably increases the workload of operator, but also may be because personnel
Observation and adjust not in time, it is not in place, easily there is operating error, influence the accuracy of result, so that seriously affecting production.
Utility model content
The purpose of this utility model is to provide a kind of liquid level detection devices and control system for flotation cell, are used for
Solve the problems, such as that existing liquid level detection device cannot accurately detect liquid level due to ore pulp easily crystallizes and has foam in flotation cell.
To achieve the goals above, the utility model provides the following technical solutions: a kind of level sensing for flotation cell
Device, flotation cell include flotation liquid level, and flotation froth is covered on the flotation liquid level, and the liquid level detection device includes being set to
The instrument wind purge unit and liquid level detection unit of the flotation cell side, the instrument wind purge unit purging are described floating
Select foam that the flotation fluid is made to show out a part, the liquid level detection unit is showed out by flotation fluid in the flotation cell
Part carry out level sensing.
Preferably, the instrument wind purge unit include provide wind regime instrument wind pipeline and with the instrument air hose
Line connection and the sweeping head for purging the flotation froth.
Preferably, the sweeping head includes the air outlet connecting with the instrument wind pipeline, and the wind regime goes out described in
Air port blows out instrument wind.
Preferably, the air outlet is in homalocephalus shape, so that the instrument wind of air outlet blowout is fan-shaped to external diffusion.
Preferably, the sweeping head further includes set on the Universal-head between the instrument wind pipeline and the air outlet, institute
It states Universal-head and adjusts angle and/or height between the air outlet and the flotation liquid level.
Preferably, the liquid level detection unit is contact liquid level detection unit or contact-free level detection unit.
The utility model also provides a kind of control system, and the control system includes liquid level inspection as described in any one of the above embodiments
It surveys device and flotation cell, the control system further includes the level control unit connecting with the liquid level detection unit, Yi Jiyu
The underflow pneumatic control valve unit of the level control unit connection, the underflow pneumatic control valve unit and the flotation cell connect
It connects, the liquid level information of the flotation cell is sent to the level control unit, the Liquid level by the liquid level detection device
Unit controls the liquid level that the underflow pneumatic control valve unit adjusts the flotation cell, realizes the control system to the flotation
The control of tank liquor position.
Preferably, the liquid level detection unit of the liquid level detection device is contact-free level detection unit.
Preferably, it is connected between the liquid level detection unit and the level control unit by measurement signal line, it is described
It is connected between level control unit and the underflow pneumatic control valve unit by control signal wire.
Compared with the prior art, the liquid level detection device and control system provided by the utility model for flotation cell has
There is following advantage:
Liquid level detection device provided by the utility model is provided with instrument wind purge unit, can blow flotation froth open,
Expose a part of flotation liquid level, it is possible to reduce influence of the flotation froth to level gauging, it can also be to avoid crystal to contact
The influence of formula level gauging instrument realizes on-line real-time measuremen, provides possibility for the Automatic Control of technique；Process whole process by
Equipment is completed, and had both been alleviated the labor intensity of operator, and had been also improved working efficiency, while avoiding different operation personnel because of behaviour
Make that habit is different and bring operating error, ensure that the accuracy of testing result.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as practical to this
Novel limitation.In the accompanying drawings:
Fig. 1 is a kind of structural schematic diagram of the control system of preferred embodiment provided by the utility model；
Fig. 2 is the structural schematic diagram of the instrument wind purge unit of control system shown in Fig. 1；
Fig. 3 is the step flow chart of the control method based on control system shown in Fig. 1.
Appended drawing reference:
100- control system, 1- flotation cell,
11- groove body, 12- ore pulp feed pipe,
13- medicament feed pipe, 14- flotation cell overflow port,
15- underflow valve, 2- liquid level detection device,
21- instrument wind purge unit, 211- instrument wind pipeline,
212- sweeping head, 2121- air outlet,
2122- Universal-head, 22- liquid level detection unit,
3- level control unit, 4- underflow pneumatic control valve unit.
Specific embodiment
The utility model provides many applicable creative concepts, which can be reflected in a large number of specifically
Context in.The specific embodiment described in following the embodiments of the present invention is only used as the tool of the utility model
The exemplary illustration of body embodiment, without constituting the limitation to the scope of the utility model.
The utility model will be further described with specific embodiment with reference to the accompanying drawing.
The present embodiment provides a kind of liquid level detection device and control system for flotation cell, the liquid level detection devices
Level sensing applied to the flotation liquid level of flotation cell in floatation process.
As shown in FIG. 1, FIG. 1 is a kind of structural representations of the control system of preferred embodiment provided by the utility model
Figure.The present embodiment provides a kind of control system 100, the control system 100 includes flotation cell 1, for the liquid of the flotation cell 1
Level detecting apparatus 2, the level control unit 3 being connect with the liquid level detection device 2 and with the level control unit 3 connect
The underflow pneumatic control valve unit 4 connect, the underflow pneumatic control valve unit 4 are connect with the flotation cell 1, the control system
100 realize the level sensing and automatic control to the flotation liquid level of the flotation cell 1.
The flotation cell 1 include the groove body 11 with accommodating space, set on 11 side of groove body ore pulp feed pipe 12,
The medicament feed pipe 13 that is set side by side with the ore pulp feed pipe 12, set on 11 top of groove body flotation cell overflow port 14,
And the underflow valve 15 set on 11 bottom of groove body, the ore pulp feed pipe 12 is by pulp conveying to the groove body 11, institute
It states medicament feed pipe 13 floating agent is delivered in the groove body 11, the ore pulp and the floating agent are in the groove body 11
Interior carry out flotation circuit, the flotation froth containing sodium for forming low sodium slurry and being covered in the low sodium pulp surface are described low
The interface of sodium slurry and the flotation froth is flotation liquid level, and the flotation froth is under the action of flotation froth scraper plate from institute
It states flotation cell overflow port 14 to scrape, the low sodium slurry is used for subsequent processing operations from the discharge of the underflow valve 15 of the flotation cell 1.
The liquid level detection device 2 includes instrument wind purge unit 21 and the liquid level inspection set on 1 side of flotation cell
Unit 22 is surveyed, the instrument wind purge unit 21 purges the flotation froth and the flotation fluid is made to show out a part, described
Liquid level detection unit 22 carries out level sensing by the part that flotation fluid in the flotation cell 1 is showed out.
As shown in Fig. 2, Fig. 2 is the structural schematic diagram of the instrument wind purge unit of control system shown in Fig. 1.The instrument wind
Purge unit 21 includes providing the instrument wind pipeline 211 of wind regime and connecting with the instrument wind pipeline 211 and be used to purge institute
State the sweeping head 212 of flotation froth.
For providing wind regime, instrument wind is referred to the instrument wind pipeline 211 to each production pneumatic power, such as pneumatic operated valve
With the instrument gas for being used to control and show technological parameter, air quality requirements are higher, and pressure is stablized, general also referred to as purification wind,
It is wind obtained by directly being compressed through air compressor machine by prepared by filtering, drying.Certainly, other kinds of wind is also the application's
In protection scope, as long as the flotation froth can be purged, new impurity will not be brought.
The sweeping head 212 includes the air outlet 2121 connecting with the instrument wind pipeline 211, is set to the instrument air hose
Universal-head 2122 between line 211 and the air outlet 2121, the wind regime blow out instrument wind by the air outlet 2121.
The air outlet 2121 is in homalocephalus shape, so that the instrument wind that the air outlet 2121 is blown out is fan-shaped to external diffusion,
Sector makes the area for purging region bigger, and effect is more preferable, certainly, when the sweeping head 212 purges, the air outlet 2121
Air quantity and wind speed are exposed subject to the flotation liquid level with just blowing the flotation froth open, in order to avoid the flotation liquid level is blown
It is recessed out, influences the testing result of liquid level.
The Universal-head 2122 adjusts the angle and/or height between the air outlet 2121 and the flotation liquid level, can
To carry out corresponding flexible modulation according to practical condition, the flotation froth is blown open convenient for instrument wind, is further decreased
Influence to level gauging.
The instrument wind purge unit 21 can blow flotation froth open, expose a part of flotation liquid level, it is possible to reduce
Influence of the flotation froth to level gauging, can also influence to avoid crystal to contact fluid level measuring instrument table, realize online
Real-time detection, detection is accurate, provides possibility for the Automatic Control of technique；Process whole process is completed by equipment, has both alleviated behaviour
The labor intensity for making personnel also improves working efficiency, while avoiding different operation personnel bring due to operating habit difference
Operating error ensure that the accuracy of testing result.
The liquid level detection unit 22 is contact liquid level detection unit or contact-free level detection unit.In this implementation
In example, the liquid level detection unit 22 is contact-free level detection unit, is showed out by flotation fluid in the flotation cell 1
The liquid level of the flotation cell 1 is detected part.
It is connected between the liquid level detection unit 22 and the level control unit 3 by measurement signal line, the liquid level
Control unit 3 receives the liquid level information for the flotation cell 1 that the liquid level detection unit 22 provides, while the Liquid level list
Connected between member 3 and the underflow pneumatic control valve unit 4 by control signal wire, the underflow pneumatic control valve unit 4 and
The underflow valve 15 of the flotation cell 1 connects, and the level control unit 3 controls the underflow pneumatic control valve unit 4 and adjusts institute
The liquid level for stating flotation cell 1 opens the underflow pneumatic control valve unit 4, and the underflow valve 15 is opened, low in the groove body 11
The liquid level of the discharge of sodium slurry, the flotation liquid level reduces；The underflow pneumatic control valve unit 4 is closed, the underflow valve 15 closes
It closes, with the addition of ore pulp and floating agent, the liquid level of the flotation liquid level is increased, to realize that the control system 100 is right
The control of 1 liquid level of flotation cell.
As shown in figure 3, Fig. 3 is the step flow chart of the control method based on control system shown in Fig. 1.The control method
The following steps are included:
Step S1, the described flotation cell 1 carries out flotation circuit, is covered with flotation froth, the level sensing on flotation liquid level
The instrument wind purge unit 21 of device 2 purges the flotation froth and the flotation fluid is made to show out a part, the liquid level inspection
It surveys unit 22 and level sensing is carried out by the part that flotation fluid in the flotation cell 1 is showed out；
Specifically, ore pulp and floating agent pass through the ore pulp feed pipe 12 respectively and the medicament feed pipe 13 enters institute
The groove body 11 for stating flotation cell 1 carries out flotation circuit in the groove body 11, generates low sodium slurry, the surface of low sodium slurry is floating
Liquid level is selected, the flotation froth containing sodium is covered on the flotation liquid level, the instrument wind pipeline 211 provides wind regime, the wind regime
It is blown out by the air outlet 2121 of the sweeping head 212, the flotation froth is blown open, so that the flotation liquid level just exposes one
Part, the liquid level detection unit 22 carry out level sensing by the part that the flotation fluid is showed out；
Step S2, the liquid level information that the described liquid level detection unit 22 will test is sent to the level control unit 3, described
Level control unit 3 controls the liquid level that the underflow pneumatic control valve unit 4 adjusts the flotation cell 1, realizes the control system
The control for 100 pairs of 1 liquid levels of flotation cell of uniting.
The control system 100 passes through the liquid level detection unit 22- level control unit 3- underflow pneumatic control valve list
First 4- liquid level detection unit 22 forms the liquid automatic control of closed loop, realize flotation cell nobody be automatically brought into operation and produce.
The utility model is limited it should be noted that above-described embodiment illustrates rather than the utility model
System, and those skilled in the art can be designed alternative embodiment without departing from the scope of the appended claims.?
In claim, any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising"
Element or step not listed in the claims is not excluded the presence of.
Claims (9)
1. a kind of liquid level detection device for flotation cell, which is characterized in that flotation cell (1) includes flotation liquid level, the flotation
Flotation froth is covered on liquid level, the liquid level detection device (2) includes that the instrument wind set on the flotation cell (1) side purges
Unit (21) and liquid level detection unit (22), instrument wind purge unit (21) purging flotation froth make described
Flotation fluid shows out a part, the part that the liquid level detection unit (22) is showed out by the flotation cell (1) interior flotation fluid
Carry out level sensing.
2. the liquid level detection device according to claim 1 for flotation cell, which is characterized in that the instrument wind purging is single
First (21) include providing the instrument wind pipeline (211) of wind regime and connecting with the instrument wind pipeline (211) and be used to purge institute
State the sweeping head (212) of flotation froth.
3. the liquid level detection device according to claim 2 for flotation cell, which is characterized in that the sweeping head (212)
Including the air outlet (2121) connecting with the instrument wind pipeline (211), the wind regime is blown out by the air outlet (2121)
Instrument wind.
4. the liquid level detection device according to claim 3 for flotation cell, which is characterized in that the air outlet (2121)
In homalocephalus shape, so that the instrument wind of the air outlet (2121) blowout is fan-shaped to external diffusion.
5. the liquid level detection device according to claim 3 for flotation cell, which is characterized in that the sweeping head (212)
It further include set on the Universal-head (2122) between the instrument wind pipeline (211) and the air outlet (2121), the Universal-head
(2122) angle and/or height between the air outlet (2121) and the flotation liquid level are adjusted.
6. the liquid level detection device according to claim 1 for flotation cell, which is characterized in that the liquid level detection unit
It (22) is contact liquid level detection unit or contact-free level detection unit.
7. a kind of control system, which is characterized in that the control system (100) includes as claimed in any one of claims 1 to 6
Liquid level detection device (2) and flotation cell (1), the control system (100) further include connecting with the liquid level detection device (2)
Level control unit (3) and the underflow pneumatic control valve unit (4) being connect with the level control unit (3), the underflow
Pneumatic control valve unit (4) is connect with the flotation cell (1), and the liquid level detection device (2) believes the liquid level of the flotation cell
Breath is sent to the level control unit (3), and the level control unit (3) controls the underflow pneumatic control valve unit (4)
The liquid level for adjusting the flotation cell (1) realizes control of the control system (100) to the flotation cell (1) liquid level.
8. control system according to claim 7, which is characterized in that the level sensing list of the liquid level detection device (2)
First (22) are contact-free level detection unit.
9. control system according to claim 8, which is characterized in that the liquid level detection unit (22) and the liquid level control
It is connected between unit (3) processed by measurement signal line, the level control unit (3) and the underflow pneumatic control valve unit
(4) it is connected between by control signal wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821691906.2U CN208944364U (en) | 2018-10-18 | 2018-10-18 | A kind of liquid level detection device and control system for flotation cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821691906.2U CN208944364U (en) | 2018-10-18 | 2018-10-18 | A kind of liquid level detection device and control system for flotation cell |
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| CN208944364U true CN208944364U (en) | 2019-06-07 |
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ID=66742012
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113546764A (en) * | 2021-09-04 | 2021-10-26 | 新疆八钢矿业资源有限公司 | Special level gauge of ore dressing flotation device |
-
2018
- 2018-10-18 CN CN201821691906.2U patent/CN208944364U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113546764A (en) * | 2021-09-04 | 2021-10-26 | 新疆八钢矿业资源有限公司 | Special level gauge of ore dressing flotation device |
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