CN201173683Y

CN201173683Y - Sealing device

Info

Publication number: CN201173683Y
Application number: CNU2007201594322U
Authority: CN
Inventors: 李传山
Original assignee: SHANDONG SHANSHUI CEMENT GROUP Ltd
Current assignee: SHANDONG SHANSHUI CEMENT GROUP Ltd
Priority date: 2007-12-26
Filing date: 2007-12-26
Publication date: 2008-12-31
Anticipated expiration: 2017-12-26

Abstract

The utility model relates to a sealing device which is provided with four sealing structures between a kiln port cylinder body and a kiln head cover case body; the four sealing structures comprise a sealing loop, a sealing cover, an elastic sealing piece and a sealing baffle, wherein, the sealing loop is fixed on the front part of a cold wind sleeve; the sealing cover is fixed on the kiln head cover case body; the elastic sealing piece is arranged between the sealing cover and the cold wind sleeve; the sealing baffle is fixed on the cold wind sleeve. The four sealing structures also comprise an L-shaped sealing loop fixed on the tail end of the cold wind sleeve and an L-shaped sealing cover positioned between the sealing baffle and the sealing cover. The sealing loop fixed on the front part of the cold wind sleeve forms a labyrinth type sealing. The sealing device has the advantages that the sealing device is provided with the four sealing structures and the sealing performance is good; the sealing loop fixed on the front part of the cold wind sleeve forms a labyrinth type sealing and is not mutually contacted with a heat-resistant scaleboard, thus the service life of parts are prolonged; the tail end of the cold wind sleeve is provided with the L-shaped sealing loop, and the circular sealing cover positioned between the sealing baffle and the sealing cover effectively prevents wind-blown sand from overflowing and can increase resistance to airflow to reduce air leakage of the kiln head cover.

Description

A kind of sealing device

(1) technical field

The utility model relates to the sealing device technical field, particularly a kind of sealing device that is applicable to rotary kiln or rotary drying machine.

(2) background technology

In rotary kiln or the rotary drying machine operation air quantity is had certain requirement, the excessive cold air if bleed in kiln hood or rotary drying machine end can cause the hear rate of kiln to increase, and influences the system process performance.

The kiln hood negative pressure is smaller, and the pressure that is in whole device the pressure-fired phenomenon occurs near zero point sometimes, seals badly, and fine powder material can gush out in the kiln, influence environmental sanitation, even can cause equipment breakdown because of kiln support roller pollution blown sand.Thereby the rotary kiln end sealing is very important.

Traditional a kind of sealing device adopts 2 seal structures, uses the back to prove that sealing is poor, service life is low, kiln hood cover inleakage is many, is not very practical.

(3) summary of the invention

The utility model is in order to overcome the deficiency of above technology, and a kind of good airproof performance, long service life, sealing device that kiln hood cover inleakage is little are provided.

The utility model is realized by following measure: a kind of sealing device, it is characterized in that: be provided with four seal structures between kilneye cylindrical shell and kiln hood over body case, four seal structures comprise the sealing ring that is fixed on the cold wind shroud front portion, be fixed on seal closure, the elastic sealing strip between seal closure and cold wind shroud on the kiln hood over body case, be fixed on the sealing baffle on the cold wind shroud.

It also comprises the fixedly L shaped sealing ring of cold wind shroud end, the seal closure of the circle between sealing baffle and seal closure the utility model.

The sealing ring that is fixed on the cold wind shroud front portion described in the utility model is labyrinth sealing.

Elastic sealing strip described in the utility model is stacked placement and is strained and fixed on cold wind shroud by the steel wire rope take-up device.

The beneficial effects of the utility model:

1. be provided with four seal structures, good airproof performance.

2. the sealing ring of cold wind shroud front portion is labyrinth sealing, is not in contact with one another with heat-resisting liner plate, has prolonged parts service life.

The cold wind shroud end be provided with L shaped sealing ring, the seal closure of the circle between sealing baffle and seal closure had both prevented effectively that dust storm was excessive, can increase gas-flow resistance again, and kiln hood cover inleakage is reduced.

(4) description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is that the I of Fig. 1 is to enlarged diagram.

Fig. 3 is that the F of Fig. 2 is to schematic diagram.

Fig. 4 is the structural representation of elastic sealing strip of the present utility model.

Fig. 5 is that the H of Fig. 2 is to schematic diagram.

1 kilneye guard shield among the figure, 2 square head bolts, 3 nuts, 4 kiln hood over body cases, 5 seal closures, 6 seal closures, 7 sealing rings, 8 heat-resisting liner plates, 9 cold wind shrouds, 10 elastic sealing strips, 11 sealing baffles, 12 sealing rings, 13 cooling ducts, 14 kilneye cylindrical shells, 15 steel wire rope shoes, 16 steel wire ropes, 17 steel wire rope take-up devices, 18 dogs.

(5) specific embodiment

A kind of sealing device as shown in Figure 1, it is included in four seal structures that are provided with between kilneye cylindrical shell 14 and the kiln hood over body case 4, and four seal structures comprise the sealing ring 7 that is fixed on the cold wind shroud 9, be fixed on seal closure 5, the elastic sealing strip 10 between seal closure 5 and cold wind shroud 9 on the kiln hood over body case 4, be fixed on the sealing baffle 11 on the cold wind shroud 9.

It also comprises the fixedly L shaped sealing ring 12 of cold wind shroud 9 ends, the seal closure 6 of the circle between sealing baffle 11 and seal closure 5 the utility model.

Sealing ring 7 described in the utility model is labyrinth seal.

Elastic sealing strip 10 described in the utility model is strained and fixed on cold wind shroud 9 for stacked placement and by steel wire rope take-up device 17 hoops shown in Fig. 2 .3,4,5.

Described steel wire rope take-up device 17 comprises that 4 groups of hoops distribute, and is chained together by steel wire rope 16, is provided with steel wire rope shoe 15 between the steel wire rope 16.

Very high during use owing to kilneye guard shield 1 running temperature; usually in 650-1400 ℃ of temperature environment, move; so, also will design cooling duct 13 winding-up coolings separately for kilneye cap iron and kilneye cylindrical shell except beating heat-resisting watering material feeding protection kilneye cap iron and kilneye cylindrical shell 14 and the kilneye guard shield 1.

The utility model operation principle: the utility model is totally four seal structures, sealing ring 7 is labyrinth seal, the blown sand that kilneye guard shield gas inside is carried is blocked in the first seal structures inner seal ring 7 effectively, is not in contact with one another with heat-resisting liner plate 8, has prolonged the parts long service life; Elastic sealing strip 10 (bilayer) is stacked and strain with steel wire rope 16 hoops, harness forms the radial compaction hermetically-sealed construction on cold wind shroud 9, can extremely effectively prevent the air short circuit between kilneye guard shield 1 inside and the external side of kiln, and prevent that once more the outer of blown sand scurried in the kiln hood cover; Sealing baffle 11 and sealing ring 12 form other twice barrier effect especially, stop for the dirt sand that still can fly out, and effective direction that flies out that changes, prevent that the blown sand diffusion is too far away, influence the running of miscellaneous equipment (as one grade of support roller of kiln), simultaneously also increased the resistance that leaks out, reduced the inleakage of kiln hood cover, discharged for the ash exhauster of the blown sand of collecting by the seal closure bottom.

As shown in Figure 1, also has square head bolt 2 among the figure, nut 3, dog 18 parts convenient fixedly kilneye cylindrical shell 14 and kilneye guard shield 1.

Claims

1. sealing device, it is characterized in that: be provided with four seal structures between kilneye cylindrical shell (14) and kiln hood over body case (4), four seal structures comprise and are fixed on the anterior sealing ring (7) of cold wind shroud (9), are fixed on seal closure (5) on the kiln hood over body case (4), are positioned at elastic sealing strip (10) between seal closure (5) and the cold wind shroud (9), are fixed on the sealing baffle (11) on the cold wind shroud (9).

2. sealing device according to claim 1 is characterized in that: it also comprises the fixedly terminal L shaped sealing ring (12) of cold wind shroud (9), is positioned at the seal closure (6) of the circle between sealing baffle (11) and the seal closure (5).

3. sealing device according to claim 1 is characterized in that: described sealing ring (7) is labyrinth sealing.

4. according to each described sealing device of claim 1 to 3, it is characterized in that: described elastic sealing strip (10) is strained and fixed on cold wind shroud (9) for stacked placement and by steel wire rope take-up device (17).