阅读说明：本技术 一种重力式旋流除尘器 (Gravity type cyclone dust collector ) 是由 田辉 邹忠平 徐灿 熊拾根 郑军 邹达基 于 2019-11-12 设计创作，主要内容包括：本发明公开了一种重力式旋流除尘器,属于冶金工业技术领域,包括壳体以及设于壳体上进气通道、排灰口和排气通道,壳体内由自上而下依次设置的导流组件、旋流组件、落尘组件分隔成上部缓冲室、中部旋流室及下部贮灰室,上部缓冲室顶部连通进气通道,导流组件的上端连通排气通道、下端连通中部旋流室,上部缓冲室与中部旋流室之间通过旋流组件形成的旋流通道连通,中部旋流室与下部贮灰室之间通过落尘组件形成的落尘通道连通,下部贮灰室底部连通排灰口。本除尘器除尘效率高和使用寿命长,可减少后续煤气精除尘的灰负荷,有利于煤气精除尘的工作,可应用在新建高炉的粗煤气除尘或者旧高炉的粗煤气除尘的改造工程中。(The invention discloses a gravity type cyclone dust collector, which belongs to the technical field of metallurgical industry and comprises a shell, an air inlet channel, an ash discharge port and an exhaust channel, wherein the air inlet channel, the ash discharge port and the exhaust channel are arranged on the shell, the shell is divided into an upper buffer chamber, a middle cyclone chamber and a lower ash storage chamber by a flow guide assembly, a cyclone assembly and a dust falling assembly which are sequentially arranged from top to bottom, the top of the upper buffer chamber is communicated with the air inlet channel, the upper end of the flow guide assembly is communicated with the exhaust channel, the lower end of the flow guide assembly is communicated with the middle cyclone chamber, the upper buffer chamber is communicated with the middle cyclone chamber through the cyclone channel formed by the cyclone assembly, the middle cyclone chamber is communicated with the lower ash storage chamber through the dust falling channel. The dust remover has high dust removal efficiency and long service life, can reduce the ash load of subsequent gas fine dust removal, is beneficial to the gas fine dust removal work, and can be applied to the modification engineering of the coarse gas dust removal of a newly-built blast furnace or the coarse gas dust removal of an old blast furnace.)

1. The utility model provides a gravity type cyclone dust collector, includes casing (1) and locates inlet channel (2), ash discharge mouth (16) and exhaust passage (17) on the casing, its characterized in that, separate into upper portion cushion chamber (6), middle part whirl chamber (11) and lower part ash storage room (15) by water conservancy diversion subassembly, whirl subassembly, the dust falling subassembly that top-down set gradually in the casing, upper portion cushion chamber top intercommunication inlet channel, the upper end intercommunication exhaust passage of water conservancy diversion subassembly, lower extreme intercommunication middle part whirl chamber, through whirl passageway (10) intercommunication that whirl subassembly formed between upper portion cushion chamber and the middle part whirl chamber, dust falling passageway (14) intercommunication that the dust falling subassembly formed between middle part whirl chamber and the lower part ash storage room, the ash discharge mouth is stored to lower part ash storage room bottom intercommunication.

2. A gravity cyclone dust collector according to claim 1 wherein the guide assembly comprises a guide cone (4) and a guide cylinder (5), the guide cylinder is arranged on the cyclone assembly, the guide cone is arranged on the corresponding end surface of the guide cylinder facing the air inlet channel, and the end of the guide cylinder close to the guide cone is connected with the air outlet channel.

3. A gravity cyclone dust collector according to claim 2 wherein the cyclone assembly comprises an inner flow plate (7), an outer flow plate (8) and a cyclone plate (9), the inner flow plate is sleeved outside the guide shell and is connected with the guide shell in a sealing manner, the outer flow plate is connected with the inner wall of the shell in a sealing manner and surrounds the inner flow plate and forms the cyclone channel with the inner flow plate, and the cyclone plate is arranged in the cyclone channel.

4. A gravity cyclone dust collector according to claim 3 wherein the dust falling assembly comprises a dust falling plate (12) and a reflecting cone (13), the reflecting cone is arranged under the back of the guide cylinder away from the guide cone, the dust falling plate is hermetically connected with the inner wall of the housing and surrounds the reflecting cone, and the dust falling plate and the reflecting cone form the dust falling channel.

5. The gravity cyclone dust collector of claim 4, wherein the air inlet channel, the flow guide cone, the flow guide cylinder, the reflection cone and the dust discharge port are arranged on a central axis of the shell.

6. The gravity cyclone dust collector of claim 5, wherein the flow guiding cone and the reflecting cone are of a hollow or solid cone structure with a narrow upper part and a wide lower part; the dust falling plate is of a conical hopper structure with a wide upper part and a narrow lower part; the inner flow plate and the outer flow plate surrounding area above the cyclone channel are in a necking shape, the inner flow plate and the outer flow plate surrounding area below the cyclone channel are in a straight shape, and the length of the inner flow plate extending to the dust falling plate is smaller than the length of the outer flow plate extending to the dust falling plate.

7. A gravity cyclone dust collector according to claim 6 wherein the outer flow plate extends to and is sealingly connected to the dust fall plate.

8. A gravity cyclone dust collector according to claim 7 wherein the dust fall passage is located close to the central axis of the housing relative to the cyclone passage; the lower port of the guide cylinder is lower than the height of the rotational flow plate; the spiral-flow board is a plurality of, evenly distributes all around along the casing axis.

9. A gravity cyclone dust collector according to claim 8 wherein the inner wall of the housing, the inner wall of the air inlet channel, the inner wall and the outer wall of the air outlet channel, the surface of the flow guiding component, the surface of the cyclone component and the surface of the dust falling component are all provided with high temperature resistant and wear resistant spray coating, smearing coating or lining plates.

10. A gravity cyclone dust collector according to any one of claims 1-9 wherein the air inlet channel is connected to a blast furnace downcomer (3); a gas shutoff valve (18) is arranged in the gas inlet channel; a manhole is arranged on the outer side of the shell.

Technical Field

The invention belongs to the technical field of metallurgical industry, and particularly relates to a gravity type cyclone dust collector.

Background

The prior dust removal process for the raw gas of the blast furnace adopts a gravity dust remover at most. The gravity dust collector has the advantages of reliable operation and small maintenance amount, but the dust collection efficiency is low, and the dust collection efficiency is about 50 percent generally. The dust removal efficiency of the crude gas system is directly related to the quality of subsequent fine gas dust removal, and for a dry bag-type dust remover, the dust remover is expected to remove as much as possible of large-particle gas ash in advance before entering dry dust removal, so that the ash load is reduced, and the fine gas dust removal work is facilitated. Therefore, how to improve the dust removal efficiency of the gravity dust remover is a topic worthy of research.

Disclosure of Invention

In view of this, the present invention provides a gravity cyclone dust collector, which is used to solve the problems of dust collection effect and service life of the dust collector.

The invention is realized by the following technical scheme:

the invention provides a gravity type cyclone dust collector which comprises a shell, an air inlet channel, an ash discharge port and an exhaust channel, wherein the air inlet channel, the ash discharge port and the exhaust channel are arranged on the shell, the shell is divided into an upper buffer chamber, a middle cyclone chamber and a lower ash storage chamber by a flow guide assembly, a cyclone assembly and a dust falling assembly which are sequentially arranged from top to bottom, the top of the upper buffer chamber is communicated with the air inlet channel, the upper end of the flow guide assembly is communicated with the exhaust channel, the lower end of the flow guide assembly is communicated with the middle cyclone chamber, the upper buffer chamber is communicated with the middle cyclone chamber through the cyclone channel formed by the cyclone assembly, the middle cyclone chamber is communicated with the lower ash storage chamber through the dust falling channel formed by the dust.

Furthermore, the flow guide assembly consists of a flow guide cone and a flow guide cylinder, the flow guide cylinder is arranged on the rotational flow assembly, the corresponding end surface of the flow guide cylinder facing the air inlet channel is provided with the flow guide cone, and one end of the flow guide cylinder close to the flow guide cone is connected with the exhaust channel.

Furthermore, the rotational flow component comprises an inner flow plate, an outer flow plate and a rotational flow plate, wherein the inner flow plate is sleeved outside the guide cylinder and is in sealed connection with the guide cylinder, the outer flow plate is in sealed connection with the inner wall of the shell and surrounds the inner flow plate to form the rotational flow channel with the inner flow plate, and the rotational flow plate is arranged in the rotational flow channel.

Furthermore, the dust falling assembly is composed of a dust falling plate and a reflecting cone, the reflecting cone is arranged under the back-off surface of the guide cylinder, which deviates from the guide cone, the dust falling plate is hermetically connected with the inner wall of the shell, surrounds the reflecting cone and forms the dust falling channel with the reflecting cone.

Furthermore, the air inlet channel, the flow guide cone, the flow guide cylinder, the reflection cone and the ash discharge port are arranged on the central axis of the shell.

Furthermore, the diversion cone and the reflection cone are of hollow or solid cone structures with narrow upper parts and wide lower parts; the dust falling plate is of a conical hopper structure with a wide upper part and a narrow lower part; the inner flow plate and the outer flow plate surrounding area above the cyclone channel are in a necking shape, the inner flow plate and the outer flow plate surrounding area below the cyclone channel are in a straight shape, and the length of the inner flow plate extending to the dust falling plate is smaller than the length of the outer flow plate extending to the dust falling plate.

Further, the outer flow plate extends to the dust falling plate and is connected with the dust falling plate in a sealing mode.

Furthermore, the dust falling channel is arranged close to the central axis of the shell relative to the rotational flow channel; the lower port of the guide cylinder is lower than the height of the rotational flow plate; the spiral-flow board is a plurality of, evenly distributes all around along the casing axis.

Furthermore, in order to effectively prolong the service life of the cyclone dust collector, the inner wall of the shell, the inner wall of the air inlet channel, the inner wall and the outer wall of the exhaust channel, the surface of the flow guide component, the surface of the cyclone component and the surface of the dust falling component are all provided with high-temperature-resistant and wear-resistant spray coating, smearing or lining plates.

Further, the air inlet channel is connected with a blast furnace downcomer for being suitable for blast furnace production; a gas shutoff valve is arranged in the gas inlet channel; a manhole is arranged on the outer side of the shell.

The invention has the advantages that: the invention can greatly improve the dust removal efficiency, and meanwhile, the surfaces of all parts in the dust remover can be provided with high-temperature-resistant and wear-resistant coatings, so that the service life of the dust remover is prolonged, and the outer side of the dust remover shell is provided with a manhole, so that the maintenance and the blockage removal are convenient; the device can be applied to the dust removal of the crude gas of a newly-built blast furnace, and particularly has the advantages of cost saving, simple structure, no limitation of sites and the like for the improvement of the crude gas dust removal of an old blast furnace.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;

reference numerals: the device comprises a shell 1, an air inlet channel 2, a blast furnace downcomer 3, a flow guide cone 4, a flow guide cylinder 5, an upper buffer chamber 6, an inner flow plate 7, an outer flow plate 8, a rotational flow plate 9, a rotational flow channel 10, a middle rotational flow chamber 11, a dust falling plate 12, a reflecting cone 13, a dust falling channel 14, a lower dust storage chamber 15, an ash discharge port 16, an exhaust channel 17 and a coal gas blocking valve 18.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.