WO2023019672A1 - 旋风和过滤复合型除尘器 - Google Patents

旋风和过滤复合型除尘器 Download PDF

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Publication number
WO2023019672A1
WO2023019672A1 PCT/CN2021/118978 CN2021118978W WO2023019672A1 WO 2023019672 A1 WO2023019672 A1 WO 2023019672A1 CN 2021118978 W CN2021118978 W CN 2021118978W WO 2023019672 A1 WO2023019672 A1 WO 2023019672A1
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Prior art keywords
filter
bin body
filter bag
cyclone
inner cylinder
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PCT/CN2021/118978
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English (en)
French (fr)
Inventor
仵晓强
乔晓军
张斗勋
周天昊
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太原重工股份有限公司
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Priority to KR1020227039633A priority Critical patent/KR20230028223A/ko
Publication of WO2023019672A1 publication Critical patent/WO2023019672A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C9/00Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D45/00Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B01D45/16Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/023Pockets filters, i.e. multiple bag filters mounted on a common frame
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/04Cleaning filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66Regeneration of the filtering material or filter elements inside the filter
    • B01D46/70Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
    • B01D46/71Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66Regeneration of the filtering material or filter elements inside the filter
    • B01D46/70Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
    • B01D46/72Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with backwash arms, shoes or nozzles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00Apparatus in which the axial direction of the vortex is reversed
    • B04C5/14Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations
    • B04C5/185Dust collectors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C9/00Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
    • B04C2009/002Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks with external filters

Definitions

  • the invention belongs to the technical field of dust removal, and in particular relates to a cyclone and filter compound dust collector.
  • Dust collector is a kind of dust removal equipment that can separate dust from dust-containing gas.
  • the current dust collector mainly includes cyclone dust collector and bag dust collector.
  • the cyclone dust collector is a device that uses the centrifugal force generated by the rotating airflow to separate dust particles from the airflow. It has the characteristics of simple structure and easy maintenance, but the dust removal efficiency is low. Make it generally play the role of primary dust removal in the field of dust control; the bag filter uses the bag to absorb and filter dust particles to achieve dust removal of dusty gas, but the bag filter requires a large installation area and the bag has a short service life, so it needs to be replaced frequently bag.
  • the dust collector is formed by connecting the bag dust collector 1 and the cyclone dust collector 3 through the connecting pipe 2, although the cyclone dust collector 3
  • the load of the bag is reduced and the service life is increased, but the two are arranged separately and installed independently, which fundamentally still has the problem of large installation area and high cost of the dust collector, and also increases the energy consumption of the fan of the dust collector.
  • the object of the present invention aims to solve the above-mentioned technical problems existing in the prior art by designing a kind of novel cyclone and filter composite dust collector.
  • the present invention provides a cyclone and filter compound dust collector, including a filter dust removal part and a cyclone dust removal part, the filter dust removal part and the cyclone dust removal part are connected to each other as a whole by a special-shaped connector, wherein:
  • the filter and dust removal part includes a filter bag bin body, a tube plate, a steam drum, and a blowing pipe.
  • the filter bag bin body is a square cavity structure, and a plurality of filter bags are placed inside;
  • the tube plate is arranged on the filter bag Inside the bin body, the tube plate is provided with a plurality of through holes, and the open ends of the filter bags are pressed onto the tube plate and communicated with the through holes one by one;
  • the steam drum is arranged on the filter bag One side outside the bag chamber stores compressed air, and the steam drum is equipped with a pulse injection valve;
  • the injection pipe is arranged inside the filter bag chamber and above the tube sheet, and The pulse injection valve of the steam drum is connected and equipped with a nozzle to blow the compressed air in the steam drum to the filter bag;
  • the cyclone dedusting part includes an inlet bin body, an inner cylinder cone, an inner cylinder, and an ash hopper.
  • the inlet bin body is a cylindrical structure
  • the inner cylinder cone is arranged in the inlet bin body
  • the cone is a cone structure with a wide top and a narrow bottom.
  • the upper circumference of the inner cylinder cone is fixedly connected with the upper circumference of the inlet bin, and the lower circumference of the inner cylinder cone is fixedly connected with a cylindrical structure.
  • the inner cylinder, the lower end of the inlet bin body is fixedly connected to the ash hopper with a cone structure with a wide top and a narrow bottom;
  • the cyclone dust removal part is provided with an inlet pipe, and the filter dust removal part is provided with an outlet pipe.
  • the special-shaped connector is a structure with a circle at the top and a circle at the bottom, the upper part is a square flange, and the lower part is a circular flange, and the square flange and the filter bag warehouse The body is connected, and the circular flange is connected with the circumference of the upper end of the inlet chamber body.
  • the inlet pipe is arranged on the inlet bin and communicates with the inlet bin
  • the outlet pipe is arranged on the filter bag bin and communicated with the filter bag bin
  • the filter bag chamber body is connected, and the outlet pipe is located above the blowing pipe on the filter bag chamber body.
  • the filter and dust removal part is used to collect particles with a particle size of ⁇ 5um in the dust-containing gas
  • the cyclone dust removal part is used to collect particles with a particle size of ⁇ 5um particles.
  • the beneficial effects of the cyclone and filter composite dust collector of the present invention include:
  • the filter dust removal part and the cyclone dust removal part are organically combined, so that the filter area of the filter bag is not limited, and the filtration wind speed can be effectively reduced, and the energy consumption requirements for the fan of the dust collector are not increased. ;
  • the upper filter and dust removal part has a square structure, which further increases the filter area of the filter bag and reduces the filter wind speed compared with the existing circular bin.
  • Fig. 1 is the structural representation of the cyclone bag composite dust collector of prior art
  • Fig. 2 is the partially cut-away structural representation of the cyclone and filter composite dust collector of the present invention
  • Fig. 3 is the schematic structural view of the filter and dust removal part in the cyclone and filter composite dust collector of the present invention
  • Fig. 4 is the structural representation of the cyclone dust removal part in the cyclone and filter composite dust collector of the present invention
  • Fig. 5 is the structural representation of the special-shaped connector in the cyclone and filter composite dust collector of the present invention.
  • Fig. 6 is a schematic diagram of the working principle of the cyclone and filter compound dust collector of the present invention.
  • 1-Filter bag bin body 2-Outlet pipe, 3-Tube plate, 4-Drum, 5-Injection pipe, 6-Special-shaped connector, 61-Square flange, 62-Round flange, 7-Inlet chamber Body, 8-inner cylinder cone, 9-inner cylinder, 10-ash hopper, 11-inlet pipe, 12-filter bag.
  • the cyclone and filter composite dust collector of the present invention includes a filter dust removal part and a cyclone dust removal part, and there is a special-shaped connector between the filter dust removal part and the cyclone dust removal part 6 are interconnected as one.
  • the filter and dust removal part is used to capture particles with a particle size of ⁇ 5um in the dust-laden gas, including the filter bag chamber 1, the tube plate 3, the steam drum 4, and the injection pipe 5.
  • the cyclone dust removal part is used to capture particles with a particle size ⁇ 5um in the dusty gas, including the inlet bin body 7, the inner cylinder cone 8, the inner cylinder 9, and the ash hopper 10.
  • the filter bag bin body 1 is a square cavity structure, and a plurality of filter bags 12 are placed inside, and the filter bag bin body 1 plays the role of protecting the filter bags 12 and sealing the dust-laden gas.
  • the tube plate 3 is arranged inside the filter bag chamber body 1, and the tube plate 3 is provided with a plurality of through holes.
  • the bag 12 is fixed in the filter bag bin body 1 .
  • the steam drum 4 is arranged on one side outside the filter bag chamber 1 for storing compressed air, and the steam drum 4 is equipped with a pulse injection valve.
  • the blowing pipe 5 is arranged inside the filter bag chamber 1 and above the tube plate 3 , communicates with the pulse blowing valve of the steam drum 4 and is equipped with a nozzle to blow the compressed air in the steam drum 4 to the filter bag 12 .
  • the inlet bin 7 is a cylindrical structure, and the inner cone 8 is arranged in the inlet bin 7.
  • the inner cone 8 is a cone structure with a wide top and a narrow bottom.
  • the upper end circumference of 7 is fixedly connected
  • the lower end circumference of the inner cylinder cone 8 is fixedly connected with the inner cylinder 9 of cylindrical structure
  • the lower end circumference of the inlet bin body 7 is fixedly connected with the ash hopper 10 of the cone structure with the upper width and the lower narrowness.
  • the special-shaped connector 6 is a structure with an upper part and a lower part.
  • the upper part is a square flange 61
  • the lower part is a circular flange 62.
  • the upper end of the inlet chamber body 7 of the cyclone dust removal part is connected to the circumference, thus, through the special-shaped connector 6, the two parts with different shapes, the filter dust removal part of the square cross section and the cyclone dust removal part of the circular cross section, can be naturally connected as a whole, and at the same time
  • the dust falling from the filter bag 12 in the filter bag chamber 1 can be directly dropped into the inner cylinder cone 8 and finally to the ash hopper 10 without accumulation.
  • the cyclone and filter compound dust collector of the present invention also includes an inlet pipe 11 and an outlet pipe 2, the inlet pipe 11 is arranged on the cyclone dust removal part, and the outlet pipe 2 is arranged on the filter dust removal part.
  • the inlet pipe 11 is arranged on the inlet chamber body 7 and communicates with the inlet chamber body 7
  • the outlet pipe 2 is arranged on the filter bag chamber body 1 and communicates with the filter bag chamber body 1, and the outlet pipe 2 is connected to the filter bag chamber body.
  • the setting position on 1 is above the blowing pipe 5.
  • the working process of the cyclone and filter compound dust collector of the present invention is: with reference to the flow path of the dust-laden gas represented by the lines with arrows in Fig. 6, the dust-laden gas enters the inlet chamber body 7 through the inlet pipe 11.
  • the outer surface of the cylinder 9 collides and generates centrifugal force, thus forming a spiral swirling airflow of dust-laden gas, which flows downward into the ash hopper 10.
  • the bottom of the ash hopper 10 Gradually narrows, in the process of the airflow gradually moving downwards, the airflow velocity will gradually increase, and a semi-vacuum state will be formed in the center of the ash hopper 10, and the dust particles with a particle size of ⁇ 5um in the dusty gas will settle on the ash hopper.
  • the pulse injection valve of the steam drum 4 instantly sprays a large amount of compressed air to the injection pipe 5, and the injection pipe 5 periodically injects compressed air to the filter bag 12 through the nozzle, and the filter bag
  • the dust particles with a particle size of ⁇ 5um captured on 12 fall into the ash hopper 10 through compressed air blowback and blowing and vibrating, thereby completing the removal of dust particles in the dust-laden gas, and the clean gas after dust removal passes through the outlet Line 2 discharges to the outside.
  • the above-mentioned dust removal process is repeated periodically to fully capture the dust particles in the dust-laden gas.
  • the dust deposited and accumulated in the lower part of the ash hopper 10 can be regularly removed by the dust discharge device, and the removed dust can be reused or discarded.
  • cyclone and filter composite dust collector of the present invention has the following advantages and beneficial effects:
  • the filter dust removal part and the cyclone dust removal part are organically combined, so that the filter area of the filter bag is not limited, and the filter wind speed can be effectively reduced.
  • the upper filter and dust removal part has a square structure, which further increases the filter area of the filter bag and reduces the filter wind speed compared with the existing circular bin body.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cyclones (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

一种旋风和过滤复合型除尘器,包括由异形连接器(6)相互连接为一体的过滤除尘部和旋风除尘部,过滤除尘部包括滤袋仓体(1)、管板(3)、汽包(4)、喷吹管(5),滤袋仓体(1)为方形空腔结构,内部放置有滤袋(12);管板(3)设置在滤袋仓体(1)内部并压装有滤袋(12);汽包(4)设置在滤袋仓体(1)外部的一侧,储存压缩空气;喷吹管(5)设置在滤袋仓体(1)内部并位于管板(3)上方;旋风除尘部包括入口仓体(7)、内筒锥体(8)、内筒(9)、灰斗(10),入口仓体(7)为圆筒形结构,内筒锥体(8)设置在入口仓体(7)内,上端圆周与入口仓体(7)的上端圆周固定连接,下端圆周固定连接有内筒(9),入口仓体(7)的下端圆周固定连接有灰斗(10)。除尘器中滤袋(12)负载小、使用寿命长,不增加除尘器风机的能耗,不增加安装占地面积,成本低并且节能。

Description

旋风和过滤复合型除尘器 技术领域
本发明属于除尘技术领域,具体涉及一种旋风和过滤复合型除尘器。
背景技术
随着电力、水泥、化工等工业的迅速发展,因此而产生的粉尘、烟气引起的大气污染问题日趋严重,加强对粉尘、烟气的有效过滤,有效去除含尘气体中的粉尘颗粒物从而降低气体中粉尘颗粒物浓度,是解决大气污染问题的有效手段。
除尘器是一种能够把粉尘从含尘气体中分离出来的除尘设备。目前的除尘器主要包括旋风除尘器和布袋除尘器,旋风除尘器是利用旋转气流所产生的离心力从气流中分离出粉尘颗粒的装置,具有结构简单、易维护等特点,但较低的除尘效率使其在粉尘治理领域一般担任初级除尘的角色;布袋除尘器是利用布袋吸附过滤粉尘颗粒来实现含尘气体的除尘,但布袋除尘器所需安装面积大,布袋使用寿命也短,需要频繁换袋。
现有技术中已有一种旋风布袋结合的复合除尘器,如图1所示,该除尘器是通过连接管道2将布袋除尘器1和旋风除尘器3相互连接而构成,尽管通过旋风除尘器3使布袋的负载降低、寿命增长,但是二者分离布置,独立安装,根本上依然存在除尘器安装面积大、成本高的问题,同时还增加了除尘器风机的能耗。
发明内容
本发明的目的旨在通过设计一种新型的旋风和过滤复合型除尘器,以解决现有技术中存在的上述技术问题。
为此,本发明提供了一种旋风和过滤复合型除尘器,包括过滤除尘部和旋风除尘部,所述过滤除尘部和所述旋风除尘部由异形连接器相互连接为一体,其中:
所述过滤除尘部包括滤袋仓体、管板、汽包、喷吹管,所述滤袋仓体为方形空腔结构,内部放置有多个滤袋;所述管板设置在所述滤袋仓体内部,所述管板开设有多个通孔,所述多个滤袋的开口端压装到所述管板上并与通孔一一对应连通;所述汽包设置在所述滤袋仓体外部的一侧,储存有压缩空气,并且所述汽包配备有脉冲喷吹阀;所述喷吹管设置在所述滤袋仓体内部并位于所述管板上方,与所述汽包的脉冲喷吹阀连通并配备有喷嘴,将所述汽包内的压缩空气喷吹至所述滤袋;
所述旋风除尘部包括入口仓体、内筒锥体、内筒、灰斗,所述入口仓体为圆筒形结构,所述内筒锥体设置在所述入口仓体内,所述内筒锥体为上宽下窄的锥筒结构,所述内筒锥体的上端圆周与所述入口仓体的上端圆周固定连接,所述内筒锥体的下端圆周固定连接有圆筒形结构的所述内筒,所述入口仓体的下端圆周固定连接有上宽下窄的锥筒结构的所述灰斗;
所述旋风除尘部上设置有入口管道,所述过滤除尘部上设置有出口管道。
进一步地,在上述旋风和过滤复合型除尘器中,所述异形连接器为上方下圆的结构, 上部为方形法兰,下部为圆形法兰,所述方形法兰与所述滤袋仓体连接,所述圆形法兰与所述入口仓体的上端圆周连接。
进一步地,在上述旋风和过滤复合型除尘器中,所述入口管道设置在所述入口仓体上并与所述入口仓体连通,所述出口管道设置在所述滤袋仓体上并与所述滤袋仓体连通,所述出口管道在所述滤袋仓体上的设置位置处于所述喷吹管的上方。
进一步地,在上述旋风和过滤复合型除尘器中,所述过滤除尘部用于捕集含尘气体中粒径<5um的颗粒物,所述旋风除尘部用于捕集含尘气体中粒径≥5um的颗粒物。
与现有技术相比,本发明的旋风和过滤复合型除尘器的有益效果包括:
同时具有旋风离心除尘和布袋脉冲除尘的二级除尘特点,使得滤袋的负载小,使用寿命长;
通过新的结构型式将过滤除尘部与旋风除尘部有机结合为整体,使得滤袋过滤面积不受限制,同时过滤风速能够有效降低,对除尘器风机的能耗要求并没有增加,具有节能的优势;
在处理等量含尘气体及达到相同排放标准的情况下,与现有布袋脉冲除尘器的占地面积大小一致,不会额外增加安装所需的占地面积,有效降低成本;
上部的过滤除尘部为方形结构,相比现有的圆形仓体,进一步增加了滤袋的过滤面积、降低了过滤风速。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图,附图中:
图1为现有技术的旋风布袋复合除尘器的结构示意图;
图2为本发明的旋风和过滤复合型除尘器的局部剖切的结构示意图;
图3为本发明的旋风和过滤复合型除尘器中的过滤除尘部的结构示意图;
图4为本发明的旋风和过滤复合型除尘器中的旋风除尘部的结构示意图;
图5为本发明的旋风和过滤复合型除尘器中的异形连接器的结构示意图;
图6为本发明的旋风和过滤复合型除尘器的工作原理示意图。
附图标记说明:
1-滤袋仓体、2-出口管道、3-管板、4-汽包、5-喷吹管、6-异形连接器、61-方形法兰、62-圆形法兰、7-入口仓体、8-内筒锥体、9-内筒、10-灰斗、11-入口管道、12-滤袋。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚,下面将结合本发明具体实施例及相应的附图对本发明技术方案进行清楚、完整地描述。显然,所描述的实施例仅是本发明的一 部分实施例,而不是全部的实施例。基于本发明的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
如图2、图3、图4、图5和图6所示,本发明的旋风和过滤复合型除尘器包括过滤除尘部和旋风除尘部,过滤除尘部和旋风除尘部之间由异形连接器6相互连接为一体。过滤除尘部用于捕集含尘气体中粒径<5um的颗粒物,包括滤袋仓体1、管板3、汽包4、喷吹管5。旋风除尘部用于捕集含尘气体中粒径≥5um的颗粒物,包括入口仓体7、内筒锥体8、内筒9、灰斗10。
滤袋仓体1为方形空腔结构,内部放置有多个滤袋12,滤袋仓体1起到保护滤袋12并且密封含尘气体的作用。管板3设置在滤袋仓体1内部,管板3开设有多个通孔,多个滤袋12的开口端压装到管板3上并与通孔一一对应连通,由此将滤袋12固定在滤袋仓体1内。汽包4设置在滤袋仓体1外部的一侧,用于储存压缩空气,同时汽包4配备有脉冲喷吹阀。喷吹管5设置在滤袋仓体1内部并位于管板3上方,与汽包4的脉冲喷吹阀连通并配备有喷嘴,将汽包4内的压缩空气喷吹至滤袋12。
入口仓体7为圆筒形结构,内筒锥体8设置在入口仓体7内,内筒锥体8为上宽下窄的锥筒结构,内筒锥体8的上端圆周与入口仓体7的上端圆周固定连接,内筒锥体8的下端圆周固定连接有圆筒形结构的内筒9,入口仓体7的下端圆周固定连接有上宽下窄的锥筒结构的灰斗10。
异形连接器6为上方下圆的结构,上部为方形法兰61,下部为圆形法兰62,方形法兰61与过滤除尘部的方形的滤袋仓体1连接,圆形法兰62与旋风除尘部的入口仓体7的上端圆周连接,由此,通过异形连接器6,能够将方形截面的过滤除尘部与圆形截面的旋风除尘部两个形状不一致的部件自然连接为整体,同时能够使得从滤袋仓体1内滤袋12上掉落的粉尘不产生积累,直接掉落至内筒锥体8内,并最终下落到灰斗10。
此外,本发明的旋风和过滤复合型除尘器还包括入口管道11和出口管道2,入口管道11设置在旋风除尘部上,出口管道2设置在过滤除尘部上。具体而言,入口管道11设置在入口仓体7上并与入口仓体7连通,出口管道2设置在滤袋仓体1上并与滤袋仓体1连通,出口管道2在滤袋仓体1上的设置位置处于喷吹管5的上方。
本发明的旋风和过滤复合型除尘器的工作过程为:参照图6中由带有箭头的线条所表示的含尘气体的流动路径,含尘气体通过入口管道11进入入口仓体7,在内筒9的外表面上产生冲撞,生成离心力,因而形成含尘气体的螺旋形旋转气流,向下流动进入灰斗10,由于灰斗10是上宽下窄的锥筒结构,灰斗10的下方逐渐变窄,在气流逐渐向下移动的过程中,气流流速会逐渐加快,会在灰斗10的中心部位形成半真空的状态,含尘气体中粒径≥5um的大比重粉尘颗粒物沉降在灰斗10的下部,粒径<5um的小比重粉尘颗粒物则随气流通过灰斗10的半真空状态的中央部位向上移动,气流通过内筒9内部进入内筒锥体8,并进而进入滤袋仓体1,由于内筒锥体8为上宽下窄的锥筒结构,内筒锥体8的出口部变大,气流向四周充分分散,由滤袋仓体1内的滤袋12进行粒径<5um的粉尘 颗粒物的捕集,汽包4的脉冲喷吹阀瞬间将大量的压缩空气喷至喷吹管5,喷吹管5通过喷嘴将压缩空气周期性地喷吹至滤袋12,将滤袋12上捕集的粒径<5um的粉尘颗粒物通过压缩空气反吹和喷吹振打掉落到灰斗10内,由此完成含尘气体中粉尘颗粒物的去除,而除尘后的干净气体通过出口管道2排放至外部。上述除尘过程周期性地反复进行,以对含尘气体中的粉尘颗粒物进行充分的捕集。
在本发明的旋风和过滤复合型除尘器的使用过程中,对于沉降积累在灰斗10下部的粉尘,可以通过粉尘排放装置定期进行排除,被排除的粉尘可以被重新利用或废弃。
综上所述,本发明的旋风和过滤复合型除尘器具有如下优点和有益效果:
1、同时具有旋风离心除尘和布袋脉冲除尘的二级除尘特点,使得滤袋的负载小,使用寿命长,含尘气体排放浓度≤10mg/m 3
2、通过新的结构型式将过滤除尘部与旋风除尘部有机结合为整体,使得滤袋过滤面积不受限制,同时过滤风速能够有效降低。
3、在处理等量含尘气体及达到相同排放标准的情况下,与现有布袋脉冲除尘器的占地面积大小一致,不会额外增加安装所需的占地面积,有效降低成本。
4、上部的过滤除尘部为方形结构,相比现有的圆形仓体,进一步增加了滤袋的过滤面积、降低了过滤风速。
5、在具备旋风离心除尘和布袋脉冲除尘的二级除尘特点的前提下,由于采用了新的结构型式将二者有机结合为整体,因此对除尘器风机的能耗要求并没有增加,具有节能的优势。
需要说明的是,在本文中,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。此外,本文中“前”、“后”、“左”、“右”、“上”、“下”、“内”、“外”、“顶”、“底”等均以附图中表示的放置状态为参照。

Claims (3)

  1. 一种旋风和过滤复合型除尘器,包括过滤除尘部和旋风除尘部,其特征在于,所述过滤除尘部和所述旋风除尘部由异形连接器相互连接为一体,其中:
    所述过滤除尘部包括滤袋仓体、管板、汽包、喷吹管,所述滤袋仓体为方形空腔结构,内部放置有多个滤袋;所述管板设置在所述滤袋仓体内部,所述管板开设有多个通孔,所述多个滤袋的开口端压装到所述管板上并与通孔一一对应连通;所述汽包设置在所述滤袋仓体外部的一侧,储存有压缩空气,并且所述汽包配备有脉冲喷吹阀;所述喷吹管设置在所述滤袋仓体内部并位于所述管板上方,与所述汽包的脉冲喷吹阀连通并配备有喷嘴,将所述汽包内的压缩空气喷吹至所述滤袋;
    所述旋风除尘部包括入口仓体、内筒锥体、内筒、灰斗,所述入口仓体为圆筒形结构,所述内筒锥体设置在所述入口仓体内,所述内筒锥体为上宽下窄的锥筒结构,所述内筒锥体的上端圆周与所述入口仓体的上端圆周固定连接,所述内筒锥体的下端圆周固定连接有圆筒形结构的所述内筒,所述入口仓体的下端圆周固定连接有上宽下窄的锥筒结构的所述灰斗;
    所述旋风除尘部上设置有入口管道,所述过滤除尘部上设置有出口管道。
  2. 如权利要求1所述的旋风和过滤复合型除尘器,其特征在于,所述异形连接器为上方下圆的结构,上部为方形法兰,下部为圆形法兰,所述方形法兰与所述滤袋仓体连接,所述圆形法兰与所述入口仓体的上端圆周连接。
  3. 如权利要求1或2所述的旋风和过滤复合型除尘器,其特征在于,所述入口管道设置在所述入口仓体上并与所述入口仓体连通,所述出口管道设置在所述滤袋仓体上并与所述滤袋仓体连通,所述出口管道在所述滤袋仓体上的设置位置处于所述喷吹管的上方。
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