Dust collecting device for cement final powder vertical mill

Abstract

The utility model discloses a dust collecting device for a cement final powder vertical mill, which comprises a vertical mill and a powder concentrator, and further comprises a pipeline structure used for sucking qualified powder particles suspended in the mill into the powder concentrator, the vertical mill and the powder concentrator are separately arranged, and a cavity of the vertical mill is communicated with a cavity of the powder concentrator through the pipeline structure. The dust collecting device for the cement final powder vertical mill is reasonable in structural design, the negative pressure pipeline is additionally arranged between the mill and the powder selecting machine to suck qualified powder particles suspended in the mill into the powder selecting machine, the yield is increased, the energy consumption is reduced, ash leakage can be effectively reduced, and the working environment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cement finish vertical mills, in particular to a dust collection device for a cement finish vertical mill. Background Technique

[0002] Energy conservation and emission reduction in the cement industry is an eternal topic. For this reason, experts and scholars in the industry have been constantly exploring new technologies, new processes, and new methods to promote the technological progress of China's cement industry. Today, China's cement technology has gone global, and some technologies have become "leaders" in the world. However, technological progress has no end. Especially in the face of the severe situation of green development and high-quality development, energy conservation and consumption reduction in cement grinding have become a hot topic of concern for the industry and enterprises. Most of the existing cement vertical mill devices integrate the powder separator above the vertical mill, and the qualified powder particles are selected and output through the powder separator. The integrated setting has a compact structure; however, the qualified powder particles suspended in the mill cannot be quickly output, which affects energy consumption, and there is also ash leakage, which affects the working environment.

[0003] For example, a grinding vertical mill disclosed in patent CN202951524U has its grinding vertical mill body fixed on a concrete foundation. The grinding table is driven by a rotating power source and horizontally placed at the bottom of the vertical mill. There is a blanking gap between the grinding table and the inner wall of the vertical mill body; a blanking chute for feeding materials onto the grinding table is arranged inside the vertical mill body, a funnel-shaped ash return cylinder is arranged above the grinding table, and a powder separator is fixed above the ash return cylinder; its solution has the above problems. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a dust collection device for a cement finish vertical mill to achieve the purpose of increasing output, reducing energy consumption, and improving the working environment.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0006] The dust collection device for the cement finish vertical mill includes a vertical mill and a powder separator, and further includes a pipeline structure for sucking the qualified powder particles suspended in the mill into the powder separator. The vertical mill and the powder separator are separately arranged, and the cavity of the vertical mill and the cavity of the powder separator are connected and communicated through the pipeline structure.

[0007] Furthermore:

[0008] The pipeline structure is a negative pressure powder suction pipeline.

[0009] The powder separator is located above the vertical mill.

[0010] The top of the vertical mill is a conical structure, and the lower end of the negative pressure powder suction pipeline is connected and communicated with the top end of the conical structure.

[0011] The lower part of the vertical mill is provided with a powder outlet, and a chute is provided on the powder separator. A bucket elevator is arranged between the powder outlet and the chute of the powder separator.

[0012] A control valve is arranged at the lower connection of the negative pressure powder extraction pipeline.

[0013] The bucket elevator is arranged between the vertical mill and the powder separator.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The dust collection device for the cement finish vertical mill has a reasonable structural design. A negative pressure pipeline is added between the mill and the powder separator to suck the qualified powder particles suspended in the mill into the powder separator, improving the output, reducing the energy consumption, effectively reducing the dust leakage, and improving the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The content expressed by each drawing of this specification and the marks in the drawings will be briefly described below:

[0017] Figure 1 It is a schematic structural diagram of the device of the utility model.

[0018] In the figure:

[0019] 1. Powder separator, 2. Vertical mill, 3. Negative pressure powder extraction pipeline, 4. Bucket elevator, 5. Bottom powder outlet. DETAILED DESCRIPTION OF THE INVENTION

[0020] The specific embodiments of the utility model will be further described in detail below with reference to the drawings through the description of the embodiments.

[0021] As Figure 1 shown, the dust collection device for the cement finish vertical mill includes a vertical mill 2, a powder separator 1, and a pipeline structure for sucking the qualified powder particles suspended in the mill into the powder separator.

[0022] The vertical mill 2 and the powder separator 1 are separately arranged, and the cavity of the vertical mill and the cavity of the powder separator are connected through a pipeline structure; the single machine occupies a small space and is flexible in layout;

[0023] The powder separator is located above the vertical mill; the pipeline structure is a negative pressure powder extraction pipeline 3; the lower end of the negative pressure powder extraction pipeline is connected to the vertical mill, and the upper end of the negative pressure powder extraction pipeline is connected to the powder separator; that is, a negative pressure pipeline is added between the mill and the powder separator to suck the qualified powder particles suspended in the mill into the powder separator, improving the output, reducing the energy consumption, effectively reducing the dust leakage, and improving the working environment.

[0024] The top of the vertical mill 2 is of a conical structure, and the lower end of the negative-pressure powder extraction pipeline is connected to the top of the conical structure. Further, a control valve is provided at the connection of the lower end of the negative-pressure powder extraction pipeline. The negative-pressure powder extraction pipeline can be opened according to the actual production situation. Preferably, the control valve is a solenoid valve, which is easy to control.

[0025] A bottom powder outlet 5 is provided at the lower part of the vertical mill, a chute is provided on the powder separator, and a bucket elevator 4 is provided between the powder outlet and the chute of the powder separator; the bucket elevator 4 is arranged between the vertical mill 2 and the powder separator, with reasonable layout and compact structure.

[0026] In the utility model, a negative-pressure pipeline is added between the mill and the powder separator to improve the qualification rate of the once-rolled powder, and the qualified powder particles suspended in the mill are pumped into the powder separator; the dust suspended in the mill enters the powder separator again, which improves the output, improves the working environment and reduces dust leakage.

[0027] The above is only a description of the preferred embodiments of the utility model, and the above technical features can be arbitrarily combined to form multiple embodiment schemes of the utility model.

[0028] The above has made an exemplary description of the utility model in conjunction with the drawings. Obviously, the specific implementation of the utility model is not limited by the above methods. As long as various non-substantive improvements are made by adopting the concept and technical scheme of the utility model, or the concept and technical scheme of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A dust collection device for a cement vertical roller mill, comprising a vertical roller mill and a classifier, characterized in that: It also includes a pipeline structure for sucking qualified powder particles suspended in the mill into the powder separator. The vertical mill and the powder separator are separately arranged, and the cavity of the vertical mill is connected to the cavity of the powder separator through the pipeline structure. The pipeline structure is a negative-pressure powder suction pipeline. The powder separator is located above the vertical mill. The top of the vertical mill is a conical structure, and the lower end of the negative-pressure powder suction pipeline is connected to the top of the conical structure. A powder outlet is provided at the lower part of the vertical mill, a chute is provided on the powder separator, and a bucket elevator is arranged between the powder outlet and the chute of the powder separator. A control valve is provided at the connection of the lower end of the negative-pressure powder suction pipeline.

2. The dust collection device for the cement vertical roller mill according to claim 1, characterized in that: The bucket elevator is arranged between the vertical mill and the powder separator.

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