CN215832441U

CN215832441U - Environment-friendly kiln head positive pressure gas rotary sealing device

Info

Publication number: CN215832441U
Application number: CN202121703926.9U
Authority: CN
Inventors: 李光鑫; 高升滨; 刘培俊; 周关峰; 李车明
Original assignee: Yishui Shanshui Cement Co ltd
Current assignee: Yishui Shanshui Cement Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-02-15
Anticipated expiration: 2031-07-26

Abstract

The utility model discloses an environment-friendly kiln head positive pressure air-rotating type sealing device, which comprises a kiln head of a rotary kiln, a kiln head cold air cover and an air blowing sealing cover, wherein the kiln head cold air cover is nested at the outer side of the kiln head of the rotary kiln, the air blowing sealing cover is arranged at the outer side of the kiln head cold air cover, a cold air cover conical head is arranged at one end part of the kiln head cold air cover, a powder vertical retaining ring is arranged at the outer side of one end of the kiln head cold air cover corresponding to the cold air cover conical head, roller supporting rings are symmetrically arranged at the inner side of the kiln head cold air cover, a roller rotating shaft is uniformly penetrated between the two roller supporting rings, a cold air cover conical head and a powder vertical retaining ring are arranged at one end of the kiln head cold air cover of the utility model, a negative pressure zone formed between the powder vertical retaining ring and the cold air cover conical head can enable air blown out by a material backflow air nozzle to form annular flow so as to drive backflow, and the powder falls into a powder receiving hopper under the action of gravity, greatly reduces the content of escaped powder and reduces the pollution to the environment.

Description

Environment-friendly kiln head positive pressure gas rotary sealing device

Technical Field

The utility model belongs to the technical field of kiln head sealing of rotary kilns, and particularly relates to an environment-friendly kiln head positive pressure gas rotary sealing device.

Background

The cement is a powdery hydraulic inorganic cementing material, is added with water and stirred into slurry, can be hardened in the air or in water, and can firmly bond sand, stone and other materials together, the early mixture of lime and volcanic ash is very similar to the modern lime and volcanic ash cement, and the concrete made of broken stone cemented by the cement not only has higher strength, but also can resist the erosion of fresh water or salt-containing water after being hardened. As an important cementing material, the high-performance cement is widely applied to engineering such as civil construction, water conservancy, national defense and the like for a long time.

The equipment commonly used in the current cement production is a rotary kiln which is mainly used for calcining cement clinker and comprises a dry-process cement production kiln and a wet-process cement production kiln. The metallurgical chemical kiln is mainly used for magnetizing and roasting lean iron ore in steel plants in the metallurgical industry; oxidizing and roasting chromium and nickel iron ores; roasting high-metallurgical ores in a refractory material plant and roasting clinker and aluminum hydroxide in an aluminum plant; roasting chromium ore sand, chromium ore powder and other minerals in a chemical plant. Lime kilns (i.e., active lime kilns) are used for roasting active lime and lightly calcined dolomite used in steel plants and iron and alloy plants. The rotary kiln is composed of processes of gas flowing, fuel burning, heat transfer, material movement and the like, and how the rotary kiln can fully burn fuel, the heat of fuel burning can be effectively transferred to the material, and the material generates a series of physical and chemical changes after receiving the heat, and finally forms finished clinker.

The kiln head of the rotary kiln needs to be sealed by using related structures such as a cold air sleeve and the like, however, the existing kiln head sealing structure still has some unreasonable factors in the using process, and the existing rotary kiln sealing structure: adopt malleation cyclone seal more, and the malleation cyclone seal has more serious ash flying sand material excessive problem of popping out, and is great to the damage of relevant structures such as cold wind cover, is unfavorable for seal structure's normal life, and the practicality is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an environment-friendly kiln head positive pressure gas rotary sealing device to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an environmental protection formula kiln head is just pressed and is revolved formula sealing device, includes rotary kiln head, kiln head cold wind cover and the sealed cowling of blowing, kiln head cold wind cover nestification is in the outside of rotary kiln head, the sealed cowling of blowing sets up the outside at kiln head cold wind cover, the one end tip of kiln head cold wind cover is provided with cold wind cover conical head, and the one end outside that kiln head cold wind cover corresponds cold wind cover conical head is provided with the perpendicular retaining ring of powder, the inboard symmetry of kiln head cold wind cover is provided with the gyro wheel lock ring, two evenly run through between the gyro wheel lock ring has the gyro wheel pivot, the outside symmetry of gyro wheel pivot has nested cover gyro wheel, the outside bonding of the perpendicular retaining ring of powder is fixed with and keeps off the material brush hair.

Preferably, one end of the blowing sealing cover is fixed with a top conical flange, the other end of the blowing sealing cover is fixed with an I-shaped flange, one end of the blowing sealing cover is provided with a blowing cover conical flange, the other end of the blowing sealing cover is provided with a blowing cover tail flange, the inner side of one end of the blowing sealing cover is provided with a blowing air channel chamber, one side of the blowing air channel chamber is provided with an air channel air inlet pipe, the other side of the blowing air channel chamber is uniformly provided with a material backflow air nozzle, and one side of the blowing sealing cover is provided with a powder receiving hopper.

Preferably, the blowing sealing cover and the top conical flange are fixedly connected through a blowing cover conical flange, and the blowing cover conical flange and the top conical flange are fixedly connected through a bolt.

Preferably, the blowing sealing cover and the I-shaped flange are fixedly connected through a blowing cover tail flange, and the blowing cover tail flange and the I-shaped flange are fixedly connected through a bolt.

Preferably, the included angle between the conical head of the cold air hood and the vertical powder retaining ring is 35-70 degrees.

Preferably, the outer side of the cold air hood roller is in contact with the surface of the rotary kiln head.

Preferably, the air duct air inlet pipe and the material backflow air nozzle are communicated with the interior of the blowing air duct chamber.

Compared with the prior art, the utility model has the beneficial effects that: one end of the kiln head cold air hood is provided with a cold air hood conical head and a powder vertical retaining ring, a negative pressure zone formed between the powder vertical retaining ring and the cold air hood conical head can enable air blown out by a material backflow air nozzle to form annular flow, so that powder is driven to flow back, the powder falls into the powder receiving hopper under the action of gravity, the content of escaped powder is greatly reduced, the pollution to the environment is reduced, and the kiln head cold air hood is more environment-friendly.

Drawings

FIG. 1 is a schematic vertical sectional view of a blower seal cover and a kiln head cooling air cover according to the present invention;

FIG. 2 is an enlarged view of the area of FIG. 1A according to the present invention;

FIG. 3 is a schematic view of the powder recovery method according to the present invention, illustrating the structure of wind direction;

in the figure: 101. a kiln head cooling air cover; 111. a conical head of the cold air hood; 112. powder vertical check ring; 113. a roller support ring; 114. a roller shaft; 115. a cold wind cover roller; 116. stopping bristles; 2. a kiln head of a rotary kiln; 301. a blowing seal cover; 331. a blowing air duct chamber; 332. a powder receiving hopper; 333. a blower housing conical flange; 334. an air inlet pipe of the air duct; 335. a blower housing tail flange; 336. a material backflow tuyere; 4. a top tapered flange; 5. is an I-shaped flange.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-3, the present invention provides the following technical solutions: the environment-friendly kiln head positive pressure gas-rotation type sealing device comprises a rotary kiln head 2, a kiln head cold air cover 101 and a blowing sealing cover 301, wherein the kiln head cold air cover 101 is nested outside the rotary kiln head 2, the blowing sealing cover 301 is arranged outside the kiln head cold air cover 101, a cold air cover conical head 111 is arranged at one end of the kiln head cold air cover 101, a powder vertical retainer ring 112 is arranged outside one end of the kiln head cold air cover 101 corresponding to the cold air cover conical head 111, roller support rings 113 are symmetrically arranged inside the kiln head cold air cover 101, roller rotating shafts 114 uniformly penetrate between the two roller support rings 113, cold air cover rollers 115 are symmetrically nested outside the roller rotating shafts 114, and material blocking bristles 116 are fixedly bonded outside the powder vertical retainer ring 112.

In order to make the blowing seal cover 301 convenient to use, in this embodiment, preferably, a top conical flange 4 is fixed at one end of the blowing seal cover 301, an i-shaped flange 5 is fixed at the other end of the blowing seal cover 301, a blowing cover conical flange 333 is arranged at one end of the blowing seal cover 301, a blowing cover tail flange 335 is arranged at the other end of the blowing seal cover 301, a blowing air duct chamber 331 is arranged at the inner side of one end of the blowing seal cover 301, an air duct air inlet pipe 334 is arranged at one side of the blowing air duct chamber 331, material backflow air nozzles 336 are uniformly arranged at the other side of the blowing air duct chamber 331, and a powder receiving hopper 332 is arranged at one side of the blowing seal cover 301.

In order to facilitate the connection of the blow seal cover 301, in the present embodiment, it is preferable that the blow seal cover 301 and the top tapered flange 4 are fixedly connected by the blow cover tapered flange 333, and the blow cover tapered flange 333 and the top tapered flange 4 are fixedly connected by bolts.

In order to facilitate connection of the blow seal cover 301, in this embodiment, it is preferable that the blow seal cover 301 and the h-shaped flange 5 are fixedly connected by a blow cover tail flange 335, and the blow cover tail flange 335 and the h-shaped flange 5 are fixedly connected by a bolt.

In order to facilitate the powder backflow, in this embodiment, preferably, an included angle between the conical head 111 of the cooling hood and the vertical powder retainer ring 112 is between 35 ° and 70 °, and the vertical powder retainer ring 112 is perpendicular to the outer side of the kiln head cooling hood 101.

In order to enable the cool wind hood roller 115 to support the kiln head cool wind hood 101, in the present embodiment, it is preferable that the outside of the cool wind hood roller 115 is in contact with the surface of the rotary kiln head 2.

In order to enable the material return air nozzle 336 to blow air into the inside of the blowing seal cover 301, in this embodiment, it is preferable that the air duct air inlet pipe 334 and the material return air nozzle 336 are both communicated with the inside of the blowing air duct chamber 331.

It should be noted that the blow seal cover 301 is a prior art, the blow seal cover 301 is installed on the kiln head cover, and there is no contact between the blow seal cover 301 and the kiln head cool air cover 101.

The working principle and the using process of the utility model are as follows: after the powder recovery device is installed, firstly, the installation and the safety protection of the powder recovery device are checked, then the powder recovery device can be used, when the powder recovery device is used, the air duct air inlet pipe 334 is connected with an air supply pipeline, air enters the air blowing air duct chamber 331 from the air duct air inlet pipe 334 and is blown out from the material backflow air nozzle 336, the blown air flows to the outer side of the cold air hood conical head 111 from the inner side of the cold air hood conical head 111, annular vortex is generated under the action of a negative pressure belt formed between the cold air hood conical head 111 and the powder vertical retainer ring 112, escaped powder is brought back, and the powder falls into the powder receiving hopper 332 under the action of gravity, so that the recovery of the powder is realized.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an environmental protection formula kiln head is calmly pressed and is pneumatics formula sealing device, includes rotary kiln head (2), kiln head cool wind cover (101) and sealed cowling (301) of blowing, its characterized in that: the utility model discloses a kiln hood, including kiln hood cold wind cover (101), kiln hood cold wind cover (101) nestification is in the outside of rotary kiln hood (2), the sealed cowling of blowing (301) sets up the outside at kiln hood cold wind cover (101), the one end tip of kiln hood cold wind cover (101) is provided with cold wind cover conical head (111), and the one end outside that kiln hood cold wind cover (101) corresponds cold wind cover conical head (111) is provided with powder vertical retainer ring (112), the inboard symmetry of kiln hood cold wind cover (101) is provided with gyro wheel lock ring (113), two evenly run through between gyro wheel lock ring (113) has gyro wheel pivot (114), the outside symmetry nestification of gyro wheel pivot (114) has cold wind cover gyro wheel (115), the outside bonding of powder vertical retainer ring (112) is fixed with and keeps off material brush hair (116).

2. The environment-friendly kiln head positive pressure gas-rotary sealing device according to claim 1, characterized in that: the one end of sealing cover (301) of blowing is fixed with top conical flange (4), and the other end of sealing cover (301) of blowing is fixed with into i-shaped flange (5), the one end of sealing cover (301) of blowing is provided with air-blowing cover conical flange (333), and the other end of sealing cover (301) of blowing is provided with air-blowing cover tail flange (335), the one end inboard of sealing cover (301) of blowing is provided with air duct room (331) of blowing, one side of air duct room (331) of blowing is provided with wind channel air-supply line (334), and the opposite side of air duct room (331) of blowing evenly is provided with material backward flow tuyere (336), one side of sealing cover (301) of blowing is provided with the powder and connects hopper (332).

3. The environment-friendly kiln head positive pressure gas-rotary sealing device according to claim 2, characterized in that: the blowing sealing cover (301) and the top conical flange (4) are fixedly connected through a blowing cover conical flange (333), and the blowing cover conical flange (333) is fixedly connected with the top conical flange (4) through bolts.

4. The environment-friendly kiln head positive pressure gas-rotary sealing device according to claim 1, characterized in that: the blowing sealing cover (301) and the I-shaped flange (5) are fixedly connected through a blowing cover tail flange (335), and the blowing cover tail flange (335) and the I-shaped flange (5) are fixedly connected through bolts.

5. The environment-friendly kiln head positive pressure gas-rotary sealing device according to claim 1, characterized in that: the included angle between the conical head (111) of the cold air cover and the powder vertical retainer ring (112) is 35-70 degrees.

6. The environment-friendly kiln head positive pressure gas-rotary sealing device according to claim 1, characterized in that: the outer side of the cold air hood roller (115) is in contact with the surface of the rotary kiln head (2).

7. The environment-friendly kiln head positive pressure gas-rotary sealing device according to claim 2, characterized in that: the air duct air inlet pipe (334) and the material backflow air nozzle (336) are communicated with the interior of the blowing air duct chamber (331).