CN106733249B

CN106733249B - Multi-tube type multi-stage cyclone dust collector

Info

Publication number: CN106733249B
Application number: CN201611103474.4A
Authority: CN
Inventors: 易作宏; 彭峻
Original assignee: Hunan Anpunuo Environmental Protection Technology Co ltd
Current assignee: Hunan Anpunuo Environmental Protection Technology Co ltd
Priority date: 2016-12-05
Filing date: 2016-12-05
Publication date: 2022-11-11
Anticipated expiration: 2036-12-05
Also published as: CN106733249A

Abstract

The invention discloses a multi-tube type multi-stage cyclone dust collector which comprises a collector body (1), an air inlet (2) arranged at the top of the collector body (1) and an air outlet (3) arranged at the bottom of the collector body (1), wherein a cyclone separation chamber (5) and an air collection chamber (6) are sequentially arranged in an inner cavity of the collector body (1) from top to bottom, a plurality of groups of cyclone separation units are arranged in the cyclone separation chamber (5) in series from top to bottom, and each group of cyclone separation units comprises a plurality of vertical parallel-mounted direct-current cyclone tubes (8). The multi-tube multistage cyclone dust collector has the advantages of good dust collection effect, high dust collection efficiency and compact structure.

Description

Multi-tube type multi-stage cyclone dust collector

Technical Field

The invention belongs to the technical field of flue gas dust removal, and particularly relates to a multi-pipe type multi-stage cyclone dust collector.

Background

The dust remover is the key equipment of waste gas and dust treatment engineering. The dust collector generally comprises a gravity dust collector, a cyclone dust collector, a bag type dust collector, an electric dust collector and the like. The cyclone dust collector includes single-tube cyclone dust collector, multi-tube cyclone dust collector, and tangential air inlet cyclone reversing type and direct flow cyclone type.

The cyclone dust removal mainly depends on the centrifugal force of dust in the rotating airflow to enable dust particles to be thrown onto the cylinder wall so as to realize separation, and the separation effect is related to the physical characteristics of the dust particles, the airflow speed and the diameter of the cylinder. Generally, for the same dust-containing waste gas, the multi-cyclone dust collector has higher dust removal efficiency than a single-tube cyclone dust collector due to the small diameter of the tube body. The tangential air inlet cyclone reverse cyclone dust collector has large peripheral size and large occupied area, is inconvenient for multi-pipe combination, and has limited number of combined multiple pipes. The direct-flow type cyclone dust collector has small peripheral size and is convenient to combine, and the small-size cyclone dust collector can be used for combining and treating large-flow waste gas to realize high-efficiency dust removal. In addition, the common dust removal effect of the single-stage cyclone dust collector is difficult to meet the national emission standard requirement of waste gas, and especially the requirement of most of the existing enterprises for realizing ultralow emission is required. Therefore, it is necessary to develop a dust remover with good dust removing effect and high dust removing efficiency.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects and shortcomings in the background technology and providing the multi-tube type multi-stage cyclone dust collector with good dust removal effect, high dust removal efficiency and compact structure.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

the utility model provides a multi-tubular multistage cyclone, includes the ware body, locates the air inlet at the top of the ware body and locates the gas vent of the bottom of the ware body, the inner chamber of ware body is equipped with cyclone room and air collecting chamber from top to bottom in proper order, the interior series connection of cyclone room is provided with multiunit cyclone unit from top to bottom, every group cyclone unit all includes vertical many direct current cyclone pipe of installing side by side.

As a further improvement to the above technical solution:

preferably, the direct current cyclone tube comprises a tube body, a spiral wind guide mechanism for guiding the gas entering the direct current cyclone tube into spiral airflow is arranged in an inner cavity of the tube body, and a sewage discharge device is arranged at the lower part of the tube body.

More preferably, the spiral air guiding mechanism comprises a fixed spiral-flow plate welded to the upper portion of the inner cavity of the pipe body and a rotary spiral-flow plate movably mounted to the lower portion of the inner cavity of the pipe body, the fixed spiral-flow plate is connected with the rotary spiral-flow plate through a central flow stabilizing column, and the rotary spiral-flow plate can rotate around the central flow stabilizing column.

More preferably, the center department of rotatory whirl board installs the bearing support, be equipped with the bearing in the bearing support, the bearing cup joints on the central steady flow post, the bearing support through four supports that are the cross and arrange with the inner wall fixed connection of body.

More preferably, the fixed rotational flow plate comprises a plurality of fixed blades, the fixed blades are uniformly arranged along the radial inclination of the central flow stabilizing column, the inner ends of the fixed blades are welded on the periphery of an upper disc, and the outer ends of the fixed blades are welded on the inner wall of the pipe body.

Preferably, the rotating rotational flow plate comprises a plurality of rotating blades, the rotating blades are uniformly arranged along the radial inclination of the central flow stabilizing column, the inner ends of the rotating blades are welded on the periphery of a lower disk, the outer ends of the rotating blades are connected with each other through ribs, a gap is reserved between the outer ends of the rotating blades and the inner wall of the pipe body, and the upper edges of the rotating blades are provided with flanges turning towards the windward side.

Preferably, the blowdown apparatus includes a blowdown groove arranged around the lower part of the pipe body, a blowdown branch pipe is arranged at the bottom of the blowdown groove, a plurality of blowdown branch pipes are collected to a blowdown header pipe, and a grid plate is arranged on the inner side of the blowdown groove.

More preferably, the outer diameter of the grid plate is smaller than the inner diameter of the pipe body, and the upper edge of the grid plate is provided with an annular baffle plate in a downward inclined and extending manner.

Preferably, the upper part of the cyclone separation chamber is also provided with a spray chamber, a spray pipe is arranged in the spray chamber, and a plurality of nozzles are arranged on the spray pipe.

Preferably, the shower body is provided with manholes at the positions of the shower chamber and the air collecting chamber.

Compared with the prior art, the invention has the advantages that: the cyclone separation chamber is arranged in the inner cavity of the body of the multi-tube type multi-stage cyclone dust collector, the cyclone separation chambers are internally provided with the plurality of groups of cyclone separation units in series from top to bottom, each group of cyclone separation units comprises a plurality of vertical direct-current cyclone tubes which are installed in parallel, dust in airflow is separated through the plurality of groups of cyclone separation units in series, the size of the direct-current cyclone tubes is reduced, the cyclone separation effect is greatly improved, and the size of the dust collector is reduced. The multi-tube multistage cyclone dust collector has the advantages of high dust collection efficiency, good dust collection effect and compact structure. The whole circle of lower part at the body encircles and sets up the blowdown groove, is equipped with blowdown branch pipe in the bottom of blowdown groove, and many blowdown branch pipes collect to a blowdown house steward to set up the grid plate in the inboard in blowdown groove, but this multitubular multistage cyclone can the science blowdown, prevent that the secondary from smuggleing secretly.

Drawings

In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions in the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the multi-cyclone dust collector of the present invention.

FIG. 2 is a schematic view of a structure of a DC cyclone tube in the multi-tube multi-stage cyclone dust collector of the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

FIG. 4 is a schematic cross-sectional view of a rotary blade in the multi-cyclone of the present invention.

Illustration of the drawings:

1. a body; 2. an air inlet; 3. an exhaust port; 4. a spray chamber; 5. a cyclonic separation chamber; 6. a gas collection chamber; 7. a shower pipe; 8. a DC cyclone tube; 9. a manhole; 81. a pipe body; 82. a spiral wind guiding mechanism; 83. a sewage draining device; 811. fixing the rotational flow plate; 812. rotating the swirl plate; 813. a central flow stabilizing column; 814. flanging; 831. a sewage draining groove; 832. a sewage branch pipe; 833. a main blowdown pipe; 834. a grid plate; 835. an annular baffle.

Detailed Description

In order to facilitate an understanding of the invention, the invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.

It should be particularly noted that when an element is referred to as being "fixed to," secured to, "connected to or communicated with" another element, it can be directly fixed to, secured to, connected to or communicated with the other element or indirectly fixed to, secured to, connected to or communicated with the other element through other intermediate connecting members.

Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.

Examples

As shown in FIG. 1, an embodiment of the multi-cyclone dust collector of the present invention is a multi-cyclone dust collector. The multi-pipe type multi-stage cyclone dust collector comprises a collector body 1, an air inlet 2 arranged at the top of the collector body 1 and an air outlet 3 arranged at the bottom of the collector body 1. The inner cavity of the device body 1 is divided into a spray chamber 4, a cyclone separation chamber 5 and a gas collection chamber 6 from top to bottom in sequence. The air inlet 2 is communicated with the spray chamber 4, and the air outlet 3 is communicated with the air collection chamber 6. A shower pipe 7 is installed in the shower chamber 4. A plurality of vertical direct current cyclone tubes 8 which are arranged in parallel in the multi-tube type multi-stage cyclone dust collector form a cyclone separation unit, and a plurality of cyclone separation units can be arranged in a cyclone separation chamber 5 from top to bottom so as to further improve the dust settling effect. This multi-tubular multistage cyclone's 1 inner chamber of the ware body from top to bottom sets gradually to spray room 4, cyclone 5 and gas collection room 6, set up multiunit cyclone unit from top to bottom in the cyclone 5, every group cyclone unit includes vertical many direct current whirlwind pipes 8 of installing side by side, can wet the flue gas that gets into this dust remover, separate the dust in to the air current through a plurality of multiunit cyclone unit of establishing ties, the size of direct current whirlwind pipe 8 has been reduced, the cyclone effect has been improved greatly, reduce the size of dust remover, adopt direct current whirlwind pipe 8 still to be favorable to parallelly connected combination. The multi-tube multistage cyclone dust collector has the advantages of high dust collection efficiency, good dust collection effect and compact structure.

As shown in fig. 2, in the multi-tube multi-stage cyclone dust collector, the straight cyclone tube 8 includes a tube 81, and a spiral wind guiding mechanism 82 for guiding the gas entering the straight cyclone tube 8 into a spiral flow is disposed in an inner cavity of the tube 81. A sewage drain 83 is installed at the lower portion of the pipe body 81. The spiral wind guiding mechanism 82 includes a fixed cyclone plate 811 welded to an upper portion of the inner cavity of the pipe 81 and a rotary cyclone plate 812 movably mounted to a lower portion of the inner cavity of the pipe 81. The fixed rotational flow plate 811 and the rotating rotational flow plate 812 are connected by a central flow stabilizing post 813, and the rotating rotational flow plate 812 can rotate around the central flow stabilizing post 813. The spiral air guide structure with the upper fixed cyclone plate 811 and the lower rotary cyclone plate 812 is adopted, so that the dust settling effect can be effectively improved. Adopt central current stabilization post 813 to connect fixed whirl board 811 and rotatory whirl board 812, this central current stabilization post 813 can be solid post, also can be hollow tubulose, not only can fix fixed whirl board 811 and rotatory whirl board 812, still can stabilize rotatory air current, improves separation efficiency to prevent that the swivel bearing of rotatory whirl board 812 from intaking dirt and intaking. A bearing support (not shown in the figure) is installed at the center of the rotary cyclone plate 812, a bearing is arranged in the bearing support, the bearing is sleeved on the central current stabilizing column 813, the bearing support is fixedly connected with the inner wall of the pipe body 81 through four supports arranged in a cross shape, the lower end of the central current stabilizing column 813 is fixed, and the central current stabilizing column 813 is prevented from shaking under the action of air flow.

The fixed rotational flow plate 811 in the spiral air guiding mechanism 82 comprises a plurality of fixed blades which are uniformly arranged along the radial direction of the central flow stabilizing column 813. The inner ends of the fixed blades are welded to the periphery of an upper disc (not shown in the figure), and the outer ends of the fixed blades are welded to the inner wall of the pipe body 81. The rotating swirl plate 812 includes a plurality of rotating blades that are uniformly arranged along the radial direction of the central flow stabilizing post 813. The inner ends of the rotating blades are welded on the periphery of a lower disc (not shown in the figure), the outer ends of the rotating blades are connected with each other through ribs, the stability of the rotating blades is improved, and a gap is reserved between the outer ends of the rotating blades and the inner wall of the pipe body 81 and is not directly connected. The upper edge of the rotating blade is provided with a flange 814 (shown in fig. 4) turned to the windward side to block the liquid droplets adhered to the rotating blade of the rotating whirl plate 812 and prevent the liquid droplets from being carried away by the airflow.

As shown in fig. 3, in this embodiment, the drainage device 83 includes a drainage groove 831 disposed around the lower portion of the pipe body 81. A sewage branch pipe 832 is arranged at the bottom of the sewage draining groove 831, and a plurality of sewage branch pipes 832 are converged to a sewage draining main pipe 833. A mesh plate 834 is provided inside the dirt discharge groove 831. Therefore, the dust particles and the dedusting water separated by the cyclone can be discharged in time. The height of the sewage discharge groove 831 is slightly higher than that of the rotary cyclone plate 812, so that liquid drops and dust particles thrown out by the rotary cyclone plate 812 can completely enter the sewage discharge groove 831. The outer diameter of the grid plate 834 is slightly smaller than the inner diameter of the pipe body 81, so that dust particles and water films flowing down along the inner wall of the pipe body 81 are ensured to completely enter the sewage draining groove 831, and the dust particles in the sewage draining groove 831 are prevented from being secondarily carried out due to air flow entrainment. An annular shield 835 extends downwardly at the upper edge of the mesh panel 834.

In this embodiment, the body 1 is provided with manholes 9 at both the shower chamber 4 and the gas collecting chamber 6. The multi-tube type multi-stage cyclone dust collector is convenient to overhaul and maintain. The multi-tube type multi-stage cyclone dust collector can adopt a vertical, horizontal or inclined arrangement mode according to the field requirement, and only the positions of the spray pipe 7, the sewage discharge pipe 833 and the manhole 9 need to be properly adjusted.

The working process and principle of the multi-tube type multi-stage cyclone dust collector in two different processes are as follows:

(1) When the dust remover is used for upgrading and transforming the system dust removal of a wet desulphurization device

The boiler (kiln) flue gas is desulfurized by the existing electric (cloth bag) dust remover and wet method, and also contains a small amount of fine dust and water mist drops which are not completely removed, and the flue gas is expressed as white smoke after being discharged from a chimney. The multi-pipe multi-stage cyclone dust collector of the invention is inserted into the flue between the wet desulphurization device and the chimney. The flue gas enters the dust remover and then uniformly disperses into each parallel direct-current cyclone pipe 8, after passing through a fixed rotational flow plate 811 at the inlet end of the direct-current cyclone pipe 8, the flue gas rotates to perform rotational flow forward movement, and under the action of centrifugal force, particulate dust and liquid drops in the flue gas are thrown to the inner wall of the direct-current cyclone pipe 8 to form a liquid film and are pushed by the flue gas to move forward along the pipe wall, and finally all the liquid flows into a sewage discharge groove 831 at the lower part; the flue gas continues to touch the rotary cyclone plate 812 forwards, residual dust particles and liquid drops in the flue gas are adhered to the cyclone blades due to collision and inertia, meanwhile, the rotary cyclone plate 812 is pushed by the air flow to rotate along the central shaft, the dust particles and the liquid drops adhered to the rotary cyclone plate are thrown to the sewage discharge groove 831, pass through the grid plate 834 and then enter the sewage discharge groove 831, finally are collected to the sewage discharge main pipe 833 through the sewage discharge branch pipe 832 to be discharged, and flow into a desulfurization liquid sedimentation tank (separation device) to be treated. The smoke is discharged through the chimney after reaching the standard. Because of the flue gas through wet flue gas desulfurization, contain more desulfurization fog drip not removed completely, need not spray, and this dust remover just in time plays the further defogging effect of flue gas, eliminates the chimney and emits the white cigarette phenomenon, plays many purposes.

(2) The dust remover is used for removing dust from flue gas of a small industrial boiler (kiln) system without a wet desulphurization device

The flue gas firstly passes through a primary dust removal device (a conventional cyclone dust collector, a granite water film dust collector and the like), coarse-grained dust is removed, the flue gas enters the multi-tube cyclone dust collector, is sprayed, humidified and washed by a spraying pipe 7 in a spraying chamber 4, then uniformly enters direct-current cyclone pipes 8 which are arranged side by side, passes through a fixed cyclone plate 811 at the inlet end of the direct-current cyclone pipes 8, rotates to perform cyclone forward movement, and under the action of centrifugal force, particulate dust and liquid drops in the flue gas are thrown to the inner wall of a pipe body 81 to form a liquid film which is pushed by the flue gas to move forward along the pipe wall, and finally all the flue gas flows into a sewage discharge tank 831 at the lower part; the flue gas continues to touch the rotary cyclone plate 812 forwards, residual dust particles and liquid drops in the flue gas are adhered to the cyclone blades due to collision and inertia, meanwhile, the rotary cyclone plate 812 is pushed by the air flow to rotate along the central shaft, the dust particles and the liquid drops adhered to the rotary cyclone plate are thrown to the sewage discharge groove 831 of the straight cyclone tube 8, pass through the grid plate 834 and then enter the sewage discharge groove 831, finally are collected to the sewage discharge main pipe 833 through the sewage discharge branch pipe 832 to be discharged, and flow into a desulfurization solution sedimentation tank (separation device) to be treated. The smoke is discharged through the chimney after reaching the standard.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a multi-stage cyclone of multitube, includes the ware body (1), locates air inlet (2) at the top of the ware body (1) and locating gas vent (3) of the bottom of the ware body (1), its characterized in that: the cyclone separator is characterized in that a cyclone separation chamber (5) and a gas collection chamber (6) are sequentially arranged in an inner cavity of the separator body (1) from top to bottom, a plurality of groups of cyclone separation units are arranged in the cyclone separation chamber (5) in series from top to bottom, and each group of cyclone separation units comprises a plurality of vertical parallel-mounted direct-current cyclone pipes (8); the direct-current cyclone tube (8) comprises a tube body (81), a spiral air guide mechanism (82) which guides air entering the direct-current cyclone tube (8) into spiral airflow is arranged in an inner cavity of the tube body (81), and a sewage discharge device (83) is arranged at the lower part of the tube body (81); spiral air guiding mechanism (82) including weld in fixed whirl board (811) and the movable mounting in the inner chamber upper portion of body (81) rotatory whirl board (812) of the inner chamber lower part of body (81), fixed whirl board (811) with connect through a center steady flow post (813) between rotatory whirl board (812), rotatory whirl board (812) can wind center steady flow post (813) are rotated.

2. The multi-duct multi-stage cyclone dust collector as claimed in claim 1, wherein: the center department of rotatory whirl board (812) installs the bearing support, be equipped with the bearing in the bearing support, the bearing cup joints on central steady flow post (813), the bearing support through four supports that are the cross and arrange with the inner wall fixed connection of body (81).

3. The multi-duct multi-stage cyclone dust collector as claimed in claim 2, wherein: the fixed rotational flow plate (811) comprises a plurality of fixed blades which are uniformly arranged along the radial inclination of the central flow stabilizing column (813), the inner ends of the fixed blades are welded on the periphery of an upper disc, and the outer ends of the fixed blades are welded on the inner wall of the pipe body (81).

4. The multi-duct multi-stage cyclone dust collector as claimed in claim 2, wherein: the rotating rotational flow plate (812) comprises a plurality of rotating blades, the rotating blades are uniformly arranged along the radial inclination of the central flow stabilizing column (813), the inner ends of the rotating blades are welded on the periphery of a lower disk, the outer ends of the rotating blades are connected with each other through ribs, a gap is reserved between the outer ends of the rotating blades and the inner wall of the pipe body (81), and the upper edge of each rotating blade is provided with a flanging (814) turning to the windward side.

5. The multi-duct multi-stage cyclone dust collector as claimed in claim 1, wherein: blowdown apparatus (83) including the whole circle encircle set up in blowdown groove (831) of body (81) lower part, the bottom of blowdown groove (831) is equipped with blowdown branch pipe (832), many blowdown branch pipe (832) collect to a blowdown house steward (833), the inboard of blowdown groove (831) is equipped with grid plate (834).

6. The multi-duct multi-stage cyclone dust collector as claimed in claim 5, wherein: the outer diameter of the grid plate (834) is smaller than the inner diameter of the pipe body (81), and the upper edge of the grid plate (834) is provided with an annular baffle plate (835) in a downward inclined extending mode.

7. The multi-duct multi-stage cyclone dust collector as claimed in any one of claims 1 to 6, wherein: the upper part of the cyclone separation chamber (5) is also provided with a spray chamber (4), a spray pipe (7) is installed in the spray chamber (4), and a plurality of nozzles are installed on the spray pipe (7).

8. The multi-duct multi-cyclone dust collector as claimed in claim 7, wherein: manholes (9) are formed in the positions, where the spray chamber (4) and the gas collecting chamber (6) are arranged, of the device body (1).