CN215831140U

CN215831140U - Sealing device of vertical mill millstone

Info

Publication number: CN215831140U
Application number: CN202122327373.8U
Authority: CN
Inventors: 狄春生
Original assignee: Jiangsu Lingyang Machinery Co ltd
Current assignee: Jiangsu Lingyang Machinery Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-02-15
Anticipated expiration: 2031-09-26

Abstract

The utility model discloses a sealing device of a vertical grinding disc, which comprises a vertical grinding disc, wherein an annular grinding machine shell is arranged outside the vertical grinding disc, a gap is formed between the grinding machine shell and the outer wall of the vertical grinding disc, the bottom of the grinding machine shell is connected with the sealing device, the sealing device comprises an upper sealing press ring, a lower sealing press ring and a sealing brush, the sealing brush is positioned between the upper sealing press ring and the lower sealing press ring, one end of the sealing brush extends out from the gap between the upper sealing press ring and the lower sealing press ring, the end of the sealing brush is tightly attached to the outer wall of the vertical grinding disc, and the sealing brush is used for sealing the gap between the bottom of the grinding machine shell and the vertical grinding disc. The utility model can seal the gap between the grinding disc of the vertical mill and the bottom of the shell of the annular mill, thereby reducing air leakage.

Description

Sealing device of vertical mill millstone

Technical Field

The utility model relates to material grinding equipment, in particular to a sealing device of a grinding disc of a vertical mill.

Background

Because the vertical mill millstone and the annular mill shell rotate and are static, an air chamber formed between the vertical mill millstone and the annular mill shell is inevitably provided with gaps, if the sealing of the places is not good, the air leakage is serious, the air speed of an air ring is influenced, and the slag discharge is aggravated.

The air leakage of the vertical mill body can reduce the air speed at the air ring, so that the cyclic load is increased, the pressure difference is high, and the phenomena of full milling and vibration are easily caused. When the condition occurs, in order to keep the wind speed at the wind ring, the working load of the circulating fan and the tail exhaust fan is increased under the condition that the total wind quantity of the system is not changed, so that the energy consumption is increased, and meanwhile, the yield of the vertical mill is also reduced to a certain extent.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a sealing device of a vertical grinding disc, which can seal a gap between the vertical grinding disc and the bottom of an annular grinding machine shell and reduce air leakage.

In order to achieve the technical purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a seal device of vertical mill, includes the vertical mill, and the vertical mill outside of mill is equipped with annular mill casing, has the clearance between the outer wall of mill casing and vertical mill, mill casing bottom is connected with seal device, seal device includes upper seal clamping ring, lower seal clamping ring and sealed brush, sealed brush is located upper seal clamping ring and seals down between the clamping ring, the one end of sealed brush stretches out and this end closely laminates with the outer wall of vertical mill between the clamping ring from upper seal clamping ring and lower seal clamping ring, sealed brush is used for sealing the clearance between mill casing bottom and the vertical mill.

As a further improved technical scheme of the utility model, the bottom of the mill shell is connected with a flange in a welding mode, the upper sealing press ring and the lower sealing press ring are fixedly connected to the flange through bolts, and the sealing brush is clamped between the upper sealing press ring and the lower sealing press ring.

As a further improved technical scheme of the utility model, the bolt is a hexagonal half-tooth bolt.

As a further improved technical scheme of the utility model, the flange, the upper sealing pressure ring, the lower sealing pressure ring and the sealing brush are all circular rings.

As a further improved technical scheme of the utility model, the sealing brush is a copper brush.

The utility model has the beneficial effects that:

the sealing brush is assembled between the upper sealing compression ring and the lower sealing compression ring, the other end of the sealing brush is tightly attached to the grinding disc of the vertical mill to form a sealing device, air leakage is reduced, the copper brush is adopted as the sealing brush, the price of the copper brush is not high, the copper brush is fixed by a bolt, the disassembly is convenient, the replacement is convenient, the use is convenient, and the cost is low.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an enlarged view of V in fig. 1.

Fig. 3 is a partial structural schematic view of the sealing brush.

Fig. 4 is a sectional view of the sealing brush.

Detailed Description

The following further description of embodiments of the utility model is made with reference to the accompanying drawings:

a sealing device of a vertical mill grinding disc comprises a vertical mill grinding disc 4, as shown in figure 1, an annular mill shell 2 is arranged outside the vertical mill grinding disc 4, an air chamber 3 is formed between the vertical mill grinding disc 4 and the annular mill shell 2, a gap is formed between the mill shell 2 and the outer wall of the vertical mill grinding disc 4, an air ring 1 is arranged between the mill shell 2 and the vertical mill grinding disc 4, and the air ring 1 is located above the air chamber 3. The bottom of the mill shell 2 is connected with a sealing device, as shown in fig. 2, fig. 3 and fig. 4, the sealing device comprises an upper sealing press ring 6, a lower sealing press ring 7 and a sealing brush 9, the sealing brush 9 is positioned in a sealing brush accommodating cavity between the upper sealing press ring 6 and the lower sealing press ring 7, one end of the sealing brush 9 extends out from the upper sealing press ring 6 and the lower sealing press ring 7, and is tightly attached to the outer wall of the vertical mill millstone 4, and the sealing brush 9 is used for sealing the gap between the bottom of the mill shell 2 and the vertical mill millstone 4.

In this embodiment, as shown in fig. 2, the mill housing 2 is connected with a flange 5 by welding, the upper sealing press ring 6 and the lower sealing press ring 7 are fixedly connected to the flange 5 by bolts 8, and the sealing brush 9 is clamped between the upper sealing press ring 6 and the lower sealing press ring 7.

In this embodiment, the bolt 8 is a hexagonal half-thread bolt.

In this embodiment, the flange 5, the upper sealing press ring 6, the lower sealing press ring 7 and the sealing brush 9 are all circular rings.

In this embodiment, the sealing brush 9 is a copper brush.

The arrows in fig. 1 indicate the direction of the air flow in the plenum 3.

The sealing brush 9 in the sealing device of the vertical grinding disc can seal the gap between the vertical grinding disc 4 and the bottom of the annular grinding machine shell 2, and air leakage is reduced.

The copper brush assembly of this embodiment is at last sealed clamping ring 6 under and between sealed clamping ring 7, and it is fixed with half tooth of hexagonal bolt between sealed clamping ring 6, sealed clamping ring 7 and the plenum 3 down, and the copper wire of another direction is hugged closely in mill department, forms sealing device, and the copper brush price is not high, and the bolt fastening is dismantled conveniently, and it is convenient to change, convenient to use, low cost.

The scope of the present invention includes, but is not limited to, the above embodiments, and the present invention is defined by the appended claims, and any alterations, modifications, and improvements that may occur to those skilled in the art are all within the scope of the present invention.

Claims

1. The utility model provides a seal device of vertical mill, includes the vertical mill, and the vertical mill outside of mill is equipped with annular mill casing, has clearance, its characterized in that between the outer wall of mill casing and vertical mill: the utility model discloses a grinding mill, including mill casing bottom, mill casing bottom is connected with sealing device, sealing device includes sealed clamping ring, lower sealed clamping ring and sealing brush, sealing brush is located sealed clamping ring and seals down between the clamping ring, the one end of sealing brush stretches out and this end closely laminates with the outer wall of founding the mill dish from last sealed clamping ring and sealing ring down, sealing brush is used for sealing the clearance between mill casing bottom and the founding the mill dish.

2. The sealing device of the grinding disc of the vertical mill according to claim 1, characterized in that: the bottom of mill casing is connected with the flange through welding mode, go up sealed clamping ring and sealed clamping ring pass through bolt fixed connection down on the flange, the sealing brush is in go up sealed clamping ring and seal down between the clamping ring.

3. The sealing device for the grinding disc of the vertical mill according to claim 2, characterized in that: the bolt is a hexagonal half-tooth bolt.

4. The sealing device of the grinding disc of the vertical grinding mill according to claim 3, characterized in that: the flange, the upper sealing pressure ring, the lower sealing pressure ring and the sealing brush are all circular rings.

5. The sealing device of the grinding disc of the vertical mill according to claim 4, characterized in that: the sealing brush is a copper brush.