CN215391297U - Pebble coal negative pressure dust suction device of coal mill - Google Patents
Pebble coal negative pressure dust suction device of coal mill Download PDFInfo
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- CN215391297U CN215391297U CN202121543254.XU CN202121543254U CN215391297U CN 215391297 U CN215391297 U CN 215391297U CN 202121543254 U CN202121543254 U CN 202121543254U CN 215391297 U CN215391297 U CN 215391297U
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Abstract
The utility model provides a negative pressure dust suction device for pebble coal of a coal mill, which comprises an air preheater and a dust collecting pipeline, wherein the air preheater is connected with the dust collecting pipeline; the air preheater is arranged at the top of the pebble coal bunker, the cold end of the smoke side of the air preheater is provided with a vertical pipeline, the vertical pipeline is connected with the top end of a dust collecting pipeline, the bottom end of the dust collecting pipeline is connected with a dust collecting port arranged at the top of the pebble coal bunker through a dust collecting pipeline, a first valve is arranged on a vertical flue of the air preheater, a second valve is arranged on the dust collecting pipeline, negative pressure exists in the air preheater, and positive pressure exists in the pebble coal bunker. The utility model has simple operation and low cost, does not need to be overhauled, utilizes the pressure difference between the air preheater and the pebble coal hopper to absorb and release dust of the pebble coal hopper, solves the problem that the pebble coal hopper is easy to suppress and release dust in the hauling process, improves the cleanness of an operation site, and is beneficial to ensuring the health of site workers.
Description
Technical Field
The utility model relates to the technical field of coal mills, in particular to a pebble coal negative pressure dust suction device of a coal mill.
Background
At the present stage, the pebble coal hopper is mostly collected by adopting an open type coal hopper and matched with a forklift for pulling transportation, in the pebble coal discharging process, the lower deslagging door is easy to wear and easy to generate dust leakage, the upper deslagging door is not tightly sealed and easy to generate dust raising, when the primary door of the pebble coal hopper is closed, positive pressure exists in the pebble coal hopper, the serious ash emission phenomenon is generated when the deslagging door is opened, and therefore the pulling transportation of the pebble coal and the cleaning of the site environment are influenced.
In order to avoid ash emission, external equipment is mostly adopted to absorb dust in the current actual production, for example, a vacuum pump is adopted to absorb dust under negative pressure to a pebble coal hopper, but the cost of absorbing dust through the external equipment is high, the device installation is easily limited by the site space, the equipment maintenance needs to spend high manpower and material resources cost, and the market popularization and application of the equipment are not facilitated.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, provides the pebble coal negative pressure dust suction device of the coal mill, and effectively solves the problem that the pebble coal hopper emits ash to the operation environment and the operation personnel.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a coal pulverizer stone coal negative pressure dust extraction, includes air preheater and dust collecting pipeline, the air preheater sets up in stone coal scuttle top, and the perpendicular flue of air preheater is connected with dust collecting pipeline top, and the dust collecting pipeline bottom is connected with the dust absorption mouth of stone coal scuttle through dust absorption pipeline.
Preferably, a first valve is arranged on a vertical flue of the air preheater, and a second valve is arranged on a dust collection pipeline.
Preferably, the dust suction port is arranged at the top of the pebble coal hopper.
Preferably, the vertical flue is arranged at the cold end of the flue gas side of the air preheater.
The utility model has the following beneficial technical effects:
the utility model utilizes the negative pressure in the vertical flue of the air preheater to provide the negative pressure for the pebble coal hopper to carry out dust absorption and pressure relief, solves the problem that the pebble coal hopper is easy to suppress and press ash during the pulling process, improves the working environment of the working site, effectively protects the health of the operator, has simple operation and low cost, does not need to be overhauled, and is beneficial to the wide application of the pebble coal hopper dust absorption device in the working site.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic view of the present invention used for dust collection of a plurality of pebble coal hoppers at the same time.
In the figure: 1. air preheater, 2, vertical flue, 3, dust collecting pipeline, 4, dust collecting pipeline, 5, pebble coal hopper, 6, first valve, 7, second valve, 8, first air preheater, 9, second air preheater, 10, first coal mill, 11, second coal mill, 12, third coal mill, 13, fourth coal mill, 14, fifth coal mill, 15, sixth coal mill.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, terms such as "upper", "lower", "bottom", "top", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only terms of relationships determined for convenience in describing structural relationships of the components or elements of the present invention, and do not particularly indicate any components or elements of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "connected" and "connecting" should be interpreted broadly, and mean either a fixed connection or an integral connection or a detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.
The utility model is further illustrated with reference to the following figures and examples.
A negative pressure dust collection device for pebble coal of a coal mill is shown in figure 1 and comprises an air preheater 1 and a dust collection pipeline 3, wherein the air preheater 1 is arranged at the top of a pebble coal hopper 5 and is used for collecting dust in the pebble coal hopper 4 in a negative pressure dust collection mode, negative pressure exists in the air preheater 1, a vertical flue 2 is arranged at a cold end of a smoke side of the air preheater 1, the vertical flue 2 is connected with the dust collection pipeline 4 through the dust collection pipeline 3, the dust collection pipeline 4 is connected with a dust collection port arranged at the top of the pebble coal hopper 5, and a first valve 6 is arranged on the vertical pipeline 2 and is used for overhauling the air preheater 1; and a second valve 7 is arranged on the dust collection pipeline 4 and used for controlling the pebble coal hopper 5 to be communicated with the air preheater 1, when the pebble coal hopper 5 discharges pebble coal, the second valve 7 is closed, and when the pebble coal hopper 5 is pulled and transported, the second valve 7 is opened to communicate the interior of the pebble coal hopper 5 with the air preheater 1 for negative pressure dust collection.
The negative pressure dust suction device for pebble coal of the coal mill, which is provided by the utility model, can also be used for simultaneously performing negative pressure dust suction on a plurality of pebble coal hoppers, as shown in fig. 2, a vertical flue of a first air preheater 8 is connected with a dust suction pipeline through a first dust collection pipeline, the dust suction pipeline is respectively connected with the pebble coal hoppers 5 of a plurality of coal mills, a vertical flue of a second air preheater 8 is connected with the dust suction pipeline through a second dust collection pipeline, the dust suction pipeline is respectively connected with the pebble coal hoppers 5 of the plurality of coal mills, positive pressure exists in the pebble coal hoppers 5, the embodiment adopts negative pressure to simultaneously perform dust suction on the plurality of coal mills, outlet negative pressure exists in the first air preheater 8 and the second air preheater 9, a first valve 6 of the air preheater is in an open state, the first air preheater 8 is respectively connected with the pebble coal hoppers of the first coal mill 10, the second coal mill 11 and the third coal mill 12, the second air preheater 9 is respectively connected with a fourth coal mill 13, a fourth coal mill 13 and a fourth coal mill 13, The pebble coal buckets of the fifth coal mill 14 and the sixth coal mill 15 are connected, when the coal mills need to normally discharge pebble coal, the second valves 7 of the first air preheater 8 and the second air preheater 9 are both closed, when pulling operation is needed, the second valves 7 of the first air preheater 8 and the second air preheater 9 are both opened, and due to the fact that pressure difference exists between the pebble coal bucket 5 and the air preheaters, dust in the pebble coal bucket 5 is sucked into the dust collecting pipeline 3 under the action of the pressure difference, dust collection and pressure relief of the pebble coal bucket of the coal mills are achieved by the air preheaters, the problem of smoke of the pebble coal bucket of the coal mills is effectively solved, cleanliness of operation environments is guaranteed, and body health of field operation personnel is protected.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the present invention, and it should be understood by those skilled in the art that various modifications and changes may be made without inventive efforts based on the technical solutions of the present invention.
Claims (4)
1. The utility model provides a coal pulverizer stone coal negative pressure dust extraction, its characterized in that, includes air preheater (1) and dust collecting pipe way (3), air preheater (1) sets up in stone coal fill (5) top, and perpendicular flue (2) of air preheater (1) are connected with dust collecting pipe way (3) top, and dust collecting pipe way (3) bottom is connected with the dust absorption mouth of stone coal fill (5) through dust absorption pipeline (4).
2. The negative pressure dust suction device for pebble coal of a coal mill as claimed in claim 1 is characterized in that a first valve (6) is arranged on a vertical flue (2) of the air preheater (1) and a second valve (7) is arranged on a dust suction pipeline (4).
3. The negative pressure dust suction device for pebble coal of a coal mill as claimed in claim 1, wherein the dust suction port is arranged at the top of a pebble coal hopper (5).
4. The negative pressure dust suction device for pebble coal of a coal mill as claimed in claim 1, wherein the vertical flue (2) is arranged at a smoke side cold end of the air preheater (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121543254.XU CN215391297U (en) | 2021-07-08 | 2021-07-08 | Pebble coal negative pressure dust suction device of coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121543254.XU CN215391297U (en) | 2021-07-08 | 2021-07-08 | Pebble coal negative pressure dust suction device of coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215391297U true CN215391297U (en) | 2022-01-04 |
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ID=79647704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121543254.XU Active CN215391297U (en) | 2021-07-08 | 2021-07-08 | Pebble coal negative pressure dust suction device of coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215391297U (en) |
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2021
- 2021-07-08 CN CN202121543254.XU patent/CN215391297U/en active Active
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