CN212965868U - System for improving dust removal efficiency of dust removal pipeline - Google Patents
System for improving dust removal efficiency of dust removal pipeline Download PDFInfo
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- CN212965868U CN212965868U CN202022510637.9U CN202022510637U CN212965868U CN 212965868 U CN212965868 U CN 212965868U CN 202022510637 U CN202022510637 U CN 202022510637U CN 212965868 U CN212965868 U CN 212965868U
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- dust removal
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Abstract
The utility model provides a system for improving the dust removal efficiency of a dust removal pipeline, which comprises a dust removal pipeline, a first dust concentration detector, a second dust concentration detector, a dust removal fan and a controller; a workshop sucks dust through a dust removal pipeline, a first dust concentration detector is installed in the workshop, a second dust concentration detector is installed at an outlet of the dust removal pipeline, and a dust removal fan is installed in the dust removal pipeline and used for generating negative pressure dust suction; a filtering device is arranged in the dust removing pipeline and is used for removing dust; the controller comprises a subtracter and a comparator, measured values of the first dust concentration detector and the second dust concentration detector are input into the subtracter, a difference value obtained by the subtracter is input into the comparator, and the comparator compares the difference value with a set threshold value and is used for controlling the flow of the dust removal fan. The utility model discloses can improve dust removal pipeline dust collection efficiency.
Description
Technical Field
The utility model relates to a metallurgical industry environmental protection field, in particular to improve dust removal pipeline dust collection efficiency's system.
Background
Metallurgical steelmaking furnaces and raw coal-fired boilers have increased significantly, and these furnaces emit atmospheric pollutants that are harmful to the surrounding environment, so that the technology of removing particulate matter from dust-containing gases to reduce their emission into the atmosphere has become more and more important. The dust-containing industrial waste gas is generated from mechanical processes such as crushing, screening, conveying and blasting of solid substances, or from processes such as combustion, high-temperature melting and chemical reaction. The former contains dust with large particle size and chemical composition the same as the original solid matter, and the latter contains dust with small particle size and chemical property different from that of the substance to be generated.
One of the main pollution sources of a sintering plant to the atmosphere when smoke emitted during ore removal is sintered, along with the intensified smelting and large-scale of a blast furnace, if effective flue gas capture and purification measures are not taken, the environmental pollution caused by the smoke is gradually serious.
Disclosure of Invention
To exist not enough among the prior art, the utility model provides an improve dust removal pipeline dust collection efficiency's system detects the dust concentration in the workshop through first dust concentration detector, and second dust concentration detector detects the dust concentration of dust removal pipeline export, and the controller is according to the difference of the measured value of first dust concentration detector and second dust concentration detector, and control dust exhausting fan's flow realizes improving dust removal pipeline dust collection efficiency.
The utility model discloses a realize above-mentioned technical purpose through following technological means.
A system for improving the dust removal efficiency of a dust removal pipeline comprises the dust removal pipeline, a first dust concentration detector, a second dust concentration detector, a dust removal fan and a controller; a workshop sucks dust through a dust removal pipeline, a first dust concentration detector is installed in the workshop, a second dust concentration detector is installed at an outlet of the dust removal pipeline, and a dust removal fan is installed in the dust removal pipeline and used for generating negative pressure dust suction; a filtering device is arranged in the dust removing pipeline and is used for removing dust;
the controller comprises a subtracter and a comparator, measured values of the first dust concentration detector and the second dust concentration detector are input into the subtracter, a difference value obtained by the subtracter is input into the comparator, and the comparator compares the difference value with a set threshold value and is used for controlling the flow of the dust removal fan.
Further, the dust removal fan is a Roots fan.
Further, the set threshold is 1.2-1.5 times of the normal value of the workshop which is detected by the first dust concentration detector and is not polluted.
Further, the controller also comprises a rotating speed controller, the subtractor obtains a difference value and inputs the difference value to the rotating speed controller, and the rotating speed controller calculates the rotating speed of the dust removal fan according to the following formula:
wherein:
n is the rotating speed of the dust removal fan, rpm;
delta e is the difference between the first dust concentration detector and the second dust concentration detector;
n0the rotating speed of the dust removal fan when the threshold value is set.
Furthermore, a plurality of filter sheets are arranged in the filter device.
The beneficial effects of the utility model reside in that:
1. improve dust removal pipeline dust collection efficiency's system, through the dust concentration in first dust concentration detector detects the workshop, the dust concentration of second dust concentration detector detection dust removal pipeline export, the controller is according to the difference of the measured value of first dust concentration detector and second dust concentration detector, control dust exhausting fan's flow, the realization improves dust removal pipeline dust collection efficiency.
2. Improve dust removal pipeline dust collection efficiency's system, for accurate control flow, confirm the fan rotational speed according to the difference of the measured value of first dust concentration detector and second dust concentration detector through speed controller to accurate control fan flow.
Drawings
Fig. 1 is a schematic view of a system for improving the dust removal efficiency of a dust removal pipeline.
In the figure:
1-a dust removal pipeline; 2-a first dust concentration detector; 3-a second dust concentration detector; 4-a dust removal fan.
Detailed Description
The invention will be further described with reference to the drawings and the following examples, but the scope of the invention is not limited thereto.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1, the system for improving the dust removal efficiency of the dust removal pipeline of the present invention comprises a dust removal pipeline 1, a first dust concentration detector 2, a second dust concentration detector 3, a dust removal fan 4 and a controller; a workshop sucks dust through a dust removal pipeline 1, a first dust concentration detector 2 is installed in the workshop, a second dust concentration detector 3 is installed at an outlet of the dust removal pipeline 1, and a dust removal fan 4 is installed in the dust removal pipeline 1 and used for generating negative pressure dust suction; a filtering device is arranged in the dust removing pipeline 1 and is used for removing dust; and a plurality of filter sheets are arranged in the filter device. The dust removal fan 4 is a roots fan.
The controller comprises a subtracter and a comparator, the measured values of the first dust concentration detector 2 and the second dust concentration detector 3 are input into the subtracter, the subtracter obtains a difference value and inputs the difference value into the comparator, and the comparator compares the difference value with a set threshold value to control the flow of the dust removal fan 4. The set threshold value is 1.2-1.5 times of the normal value of the workshop which is detected by the first dust concentration detector 2 and is not polluted.
For accurate control flow, the utility model discloses a control dust exhausting fan 4's rotational speed control flow. The controller also comprises a rotating speed controller, the subtractor obtains a difference value and inputs the difference value into the rotating speed controller, and the rotating speed controller calculates the rotating speed of the dust removal fan 4 according to the following formula:
wherein:
n is the rotating speed of the dust removal fan 4, rpm;
Δ e is a difference between the first dust concentration detector 2 and the second dust concentration detector 3, and is dimensionless;
n0is the rotational speed, rpm, of the dust extraction fan 4 at the time of setting the threshold value.
Example 1
The first dust concentration detector 2 and the second dust concentration detector 3 are both arranged to output analog quantity signals of 4-20mA, and the higher the dust concentration is, the larger the current value of the output analog quantity signals is. Speed n of the dust-removing fan 4 at the time of setting the threshold value01480 rpm; when the difference between the first dust concentration detector 2 and the second dust concentration detector 3 is 10mA, the rotation speed controller calculates that the rotation speed n required by the dust removal fan 4 is 2223.2rpm, and the rotation speed controller controls the frequency converter of the dust removal fan 4 to enable the dust removal fan 4 to reach the rotation speed.
The embodiment is a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment, and any obvious improvement, replacement or modification which can be made by those skilled in the art without departing from the essence of the present invention belongs to the protection scope of the present invention.
Claims (4)
1. A system for improving the dust removal efficiency of a dust removal pipeline is characterized by comprising a dust removal pipeline (1), a first dust concentration detector (2), a second dust concentration detector (3), a dust removal fan (4) and a controller; a workshop sucks dust through a dust removal pipeline (1), a first dust concentration detector (2) is installed in the workshop, a second dust concentration detector (3) is installed at an outlet of the dust removal pipeline (1), and a dust removal fan (4) is installed in the dust removal pipeline (1) and used for generating negative pressure dust suction; a filtering device is arranged in the dust removing pipeline (1) and is used for removing dust;
the controller comprises a subtracter and a comparator, measured values of the first dust concentration detector (2) and the second dust concentration detector (3) are input into the subtracter, the subtracter obtains a difference value and inputs the difference value into the comparator, and the comparator compares the difference value with a set threshold value and is used for controlling the flow of the dust removal fan (4).
2. The system for improving the dust removal efficiency of the dust removal pipeline according to claim 1, wherein the dust removal fan (4) is a roots fan.
3. The system for improving the dust removal efficiency of the dust removal pipeline according to claim 1, wherein the set threshold value is 1.2-1.5 times of a normal value obtained when the first dust concentration detector (2) detects the non-polluted workshop.
4. The system for improving the dust removal efficiency of the dust removal pipeline according to claim 1, wherein a plurality of filter sheets are installed in the filter device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022510637.9U CN212965868U (en) | 2020-11-03 | 2020-11-03 | System for improving dust removal efficiency of dust removal pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022510637.9U CN212965868U (en) | 2020-11-03 | 2020-11-03 | System for improving dust removal efficiency of dust removal pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212965868U true CN212965868U (en) | 2021-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022510637.9U Active CN212965868U (en) | 2020-11-03 | 2020-11-03 | System for improving dust removal efficiency of dust removal pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212965868U (en) |
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2020
- 2020-11-03 CN CN202022510637.9U patent/CN212965868U/en active Active
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