CN113617173B - Water spray film wet dust removal system - Google Patents
Water spray film wet dust removal system Download PDFInfo
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- CN113617173B CN113617173B CN202110996360.1A CN202110996360A CN113617173B CN 113617173 B CN113617173 B CN 113617173B CN 202110996360 A CN202110996360 A CN 202110996360A CN 113617173 B CN113617173 B CN 113617173B
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- water
- dust
- filter
- rotating shaft
- filter screen
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- 239000000428 dust Substances 0.000 title claims abstract description 200
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 129
- 239000007921 spray Substances 0.000 title claims abstract description 14
- 238000001914 filtration Methods 0.000 claims abstract description 62
- 238000005507 spraying Methods 0.000 claims abstract description 47
- 238000004140 cleaning Methods 0.000 claims description 42
- 238000007790 scraping Methods 0.000 claims description 19
- 239000003595 mist Substances 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 5
- 239000012528 membrane Substances 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 9
- 239000002245 particle Substances 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 9
- 239000003546 flue gas Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/23—Supported filter elements arranged for outward flow filtration
- B01D29/27—Filter bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
- B01D2247/04—Regenerating the washing fluid
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Particles Using Liquids (AREA)
Abstract
本发明提供水淋水膜式湿法除尘系统，包括：箱体、粉尘过滤区、粉尘收集区和气体除雾区，所述粉尘过滤区和粉尘收集区设置在所述箱体内，所述粉尘过滤区的上方设有进风口，所述粉尘过滤区包括喷淋装置和过滤盘装置，所述喷淋装置设置在所述过滤盘装置的上方，所述气体除雾区包括排气管，所述排气管的进气口设置在所述过滤盘装置的下方，所述粉尘收集区位于所述粉尘过滤区的下方，所述粉尘收集区包括水箱。本发明提出的水淋水膜式湿法除尘系统，针对于金属、非金属粉尘，或者亲水、非亲水性粉尘，及大小颗粒的除尘效果均有效，其操作方便、省水、过滤效果好。
The present invention provides a water-spraying membrane type wet dust removal system, comprising: a box body, a dust filtering area, a dust collecting area and a gas demisting area, wherein the dust filtering area and the dust collecting area are arranged in the box body, an air inlet is arranged above the dust filtering area, the dust filtering area comprises a spray device and a filter disc device, the spray device is arranged above the filter disc device, the gas demisting area comprises an exhaust pipe, the air inlet of the exhaust pipe is arranged below the filter disc device, the dust collecting area is located below the dust filtering area, and the dust collecting area comprises a water tank. The water-spraying membrane type wet dust removal system proposed by the present invention is effective for dust removal of metal, non-metallic dust, or hydrophilic, non-hydrophilic dust, and large and small particles, and is easy to operate, water-saving, and has a good filtering effect.
Description
Technical Field
The invention belongs to the technical field of dust removal, and particularly relates to a water drenching membrane type wet dust removal system.
Background
The dust removing system has various types, the dust removing system is easy to accumulate dust due to large dust quantity, the existing dust removing system has a mesh type dust removing system and a mesh-free type dust removing system, the existing mesh-free type dust removing system has poor filtering effect, the filtering effect is good, but water resources are consumed, dust precipitates in a water tank are difficult to clean, the mesh-type dust removing system is easy to block, when the thickness of inflammable and explosive dust reaches 1mm, the dust removing system is not in line with the industry requirement, and combustion explosion is easy to cause, so that the cleaning requirement on mesh is higher, shutdown cleaning is needed, manual cleaning is needed, and time and labor are wasted. Therefore, there is a need to develop a water-drenching membrane wet dust removal system that can be cleaned automatically and is energy efficient.
Disclosure of Invention
The invention aims to provide a water-drenching membrane wet dust removal system to solve the problems.
In order to solve the technical problems, the invention provides a water spraying film type wet dust removal system which comprises a box body, a dust filtering area, a dust collecting area and a gas defogging area, wherein the dust filtering area and the dust collecting area are arranged in the box body, an air inlet is formed in the upper part of the dust filtering area, the dust filtering area comprises a spraying device and a filtering disc device, the spraying device is arranged above the filtering disc device, the gas defogging area comprises an exhaust pipe, the air inlet of the exhaust pipe is arranged below the filtering disc device, the dust collecting area is positioned below the dust filtering area, and the dust collecting area comprises a water tank.
As a preferable scheme of the water spraying film type wet dust removal system, the spraying device comprises a plurality of spraying transverse pipes, a water inlet pipe and a water pump, wherein one end of each spraying transverse pipe is a closed end, the other end of each spraying transverse pipe is connected with a water outlet end of the water inlet pipe, the water inlet end of each water inlet pipe is communicated with a water outlet of the corresponding water pump, a water inlet of the corresponding water pump is communicated with the corresponding water tank through a pipeline, the water pump is movably connected with the corresponding box body, the spraying transverse pipes are arranged above the filtering disc device, a plurality of water spraying ports are formed in the pipe walls of the spraying transverse pipes, and when the water pump is started, water in the corresponding water tank enters the spraying transverse pipes through the corresponding water inlet pipes and is sprayed out through the corresponding water spraying ports.
As a preferable scheme of the water spray film type wet dust removal system, the filter disc device comprises a first motor, a first rotating shaft and a plurality of filter screen discs, wherein the first rotating shaft is connected with the rotating shaft of the first motor, the first rotating shaft penetrates through the centers of the filter screen discs, the filter screen discs are arranged in parallel, the spray transverse pipe is arranged above each filter screen disc in parallel, a plurality of filter screen holes are formed in each filter screen disc, and when the first motor is started, the first rotating shaft drives the filter screen discs to rotate.
As a preferable scheme of the water drenching film type wet dust removal system, the filter disc device further comprises a second motor, a second rotating shaft and a plurality of filter disc cleaning devices, wherein the second rotating shaft is connected with the rotating shaft of the second motor, the second rotating shaft penetrates through the centers of the filter disc cleaning devices, the filter disc cleaning devices are arranged in parallel, one filter disc cleaning device is correspondingly arranged above one filter disc, and when the second motor is started, the second rotating shaft drives the filter disc cleaning devices to rotate, and the bottoms of the filter disc cleaning devices are contacted with the upper surfaces of the filter discs.
As a preferable scheme of the water spray film type wet dust collection system, the filter screen disc cleaning device comprises a plurality of scraping plates, a plurality of brushes, a plurality of connecting rods and a plurality of rotating shaft sleeves, wherein the rotating shaft sleeves are sleeved on the second rotating shaft, the rotating shaft sleeves can move up and down and are fixed on the second rotating shaft, a plurality of connecting rods are fixed on each rotating shaft sleeve and are arranged in a radial mode by taking the rotating shaft sleeve as a center, one scraping plate and one brush are arranged on each connecting rod, the brushes are parallel and attached to each other, the lower edges of the brushes are lower than the lower edges of the scraping plates, the lengths of the connecting rods are larger than the radius of the filter screen disc, when the filter screen disc and the filter screen disc cleaning device rotate, the scraping plates and the brushes on the connecting rods are attached to the filter screen disc, and the moving area of the scraping plates and the brushes covers the whole filter screen disc.
As a preferable scheme of the water drenching film type wet dust collection system, the dust collection area comprises a first funnel-shaped channel, a second funnel-shaped channel, a first filter bag and a second filter bag, wherein the first funnel-shaped channel is arranged below the filter screen disc, the first filter bag is sleeved at the bottom of the first funnel-shaped channel, the second funnel-shaped channel is arranged below the filter screen disc cleaning device, the second filter bag is sleeved at the bottom of the second funnel-shaped channel, and the water tank is arranged below the first filter bag and the second filter bag.
As a preferable scheme of the water drenching film type wet dust collection system, the dust collection area further comprises an air cylinder, a push rod, a longitudinal plate, a transverse plate and a fixing block, wherein the air cylinder, the push rod, the transverse plate and the longitudinal plate are arranged on one side of the first filter bag, the fixing block is arranged on the other side of the first filter bag, the air cylinder is connected with one end of the push rod, the other end of the push rod is connected with the longitudinal plate, the longitudinal plate is perpendicular to the transverse plate, the transverse plate is fixed on the top end of the longitudinal plate, the longitudinal plate is parallel to the fixing block, the first filter bag is arranged between the longitudinal plate and the fixing block, the transverse plate is higher than the fixing block, and when the air cylinder is started, the push rod drives the longitudinal plate to move towards the fixing block until the longitudinal plate and the first filter bag are attached to the fixing block, and the transverse plate covers the upper side of the fixing block.
As a preferable scheme of the water drenching film type wet dust collection system, the gas defogging area further comprises a baffle plate and a fan, an air inlet of the exhaust pipe is arranged on the side wall of the box body close to the first funnel-shaped channel, the position of the air inlet is lower than that of the filter screen disc and higher than that of the first funnel-shaped channel, an air outlet of the exhaust pipe is communicated with the fan, a plurality of baffle areas are arranged in the exhaust pipe, the baffle areas are arranged from top to bottom, each baffle area is provided with a plurality of parallel baffle plates, the baffle plates are perpendicular to a horizontal plane, and the baffle plates of two adjacent baffle areas are perpendicular to each other.
As a preferable scheme of the water drenching membrane type wet dust removal system, the baffle plate is in a wave shape or a prismatic shape.
As a preferable scheme of the water drenching membrane type wet dust removal system, the dust filtering area is also provided with a plurality of baffles, the baffles are arranged at the gaps between the filter screen discs and the box body, and the pore diameters of the filter screen holes on the filter screen discs are sequentially reduced from top to bottom.
Compared with the prior art, the water-drenching membrane type wet dust removal system provided by the invention has the following advantages:
the dust-mixed flue gas entering from the air inlet is sprayed by water rapidly to obtain the first-step purification and dust fall of the flue gas, so that the dust and the water are conveniently combined into large particle pieces to fall on a filter screen disk;
2, arranging a plurality of filter screen discs and filter screen holes with the aperture reduced layer by layer, so as to facilitate the formation of a water film in the filter screen holes for filtering dust;
3, arranging a plurality of filter screen disc cleaning devices, scraping dust and water mixture on the filter screen discs and filter screen holes into the second filter bag through a plurality of scraping plates and a plurality of brushes, and improving the automatic cleaning capability;
4, two filter bags are arranged to filter the blocky dust, so that the dust content of water in the water tank is effectively reduced, and the water can be reused;
5, controlling the longitudinal plate and the transverse plate to move by arranging the air cylinder, so that the first filter bag can be extruded for multiple times, dust on the inner wall of the filter bag is easy to fall off, the reduction of water in a water tank is avoided, and the accommodation of the filter bag to the dust amount is increased;
6, by arranging the baffle plate, the air with high water content in the exhaust pipe is convenient to reduce the water content;
7, by arranging a baffle plate at the gap between the filter screen disc and the box body, the dust-containing air is prevented from being discharged without being filtered;
8, the dust cleaning capability is improved, the dust filter has very good performance in explosive and inflammable dust such as aluminum powder, and the like, and the dust filter generates spiral force to be scattered, so that the dust increases the probability of liquid bags, and the air cleanliness is high, so that the risks of explosion and combustion are completely avoided, and the dust filter has the effects of avoiding potential safety hazards of safety production and guaranteeing the life safety of staff.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein,
FIG. 1 is a schematic side view of a water-drenching membrane wet dust removal system of the present invention;
fig. 2 is a schematic diagram of a front view structure of a water-drenching membrane wet dust removal system of the present invention;
FIG. 3 is a schematic perspective view of a water-drenching membrane wet dust removal system of the present invention;
FIG. 4 is a schematic view of another perspective view of a water-drenching wet dust collection system according to the present invention;
FIG. 5 is a schematic diagram of the dust filtration zone of the water-drenching membrane wet dust removal system of the present invention;
FIG. 6 is a schematic diagram of the structure of a filter tray device of the water-drenching membrane wet dust removal system of the present invention;
FIG. 7 is a schematic diagram of a filter screen pan cleaning apparatus of a water-drenching membrane wet dust removal system of the present invention;
FIG. 8 is a schematic diagram of the structure of a baffle zone of a water-drenching membrane wet dust collection system of the present invention in one embodiment;
fig. 9 is a schematic diagram of the structure of the baffle area of the water-drenching membrane wet dust removal system in another embodiment of the present invention.
Wherein 1 is a box body, 2 is a dust filtering area, 211 is a spraying cross pipe, 212 is a water inlet pipe, 213 is a water pump, 221 is a first motor, 222 is a first rotating shaft, 223 is a filter screen disc, 224 is a filter screen hole, 231 is a second motor, 232 is a second rotating shaft, 233 is a filter screen disc cleaning device, 2331 is a scraping plate, 2332 is a brush, 2333 is a connecting rod, 2334 is a rotating shaft sleeve, 3 is a dust collecting area, 31 is a water tank, 321 is a first funnel-shaped channel, 322 is a first filter bag, 331 is a second funnel-shaped channel, 332 is a second filter bag, 341 is a cylinder, 342 is a push rod, 343 is a longitudinal plate, 344 is a cross plate, 345 is a fixed block, 4 is a gas mist removing area, 41 is an exhaust pipe, 411 is an air inlet, 42 is a baffle plate, 43 is a fan, 5 is an air inlet and 6 is an air outlet.
Detailed Description
The invention provides a water spraying film type wet dust removal system which mainly comprises a box body, a dust filtering area, a dust collecting area and a gas defogging area, wherein the box body is of a box-like structure, the dust filtering area and the dust collecting area are packaged in the box body, meanwhile, the box body is provided with openable and closable doors at positions corresponding to the dust filtering area and the dust collecting area, the openable and closable doors are used for maintaining and cleaning the dust filtering area and the dust collecting area, and the gas defogging area is connected with the box body and is used for discharging filtered clean gas.
In order that the above-recited objects, features and advantages of the present invention will become more apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof.
First, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
In the following, the present invention will be described in detail by using structural schematic diagrams, etc., and in the description of the embodiments of the present invention, for convenience of explanation, the schematic diagrams showing the structure of the water-drenching membrane type wet dust removal system will not be partially enlarged according to the general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention herein. In addition, the three-dimensional space of length, width and depth should be included in actual fabrication.
Referring to fig. 1 to 4, fig. 1 is a schematic side view of a water-sprayed wet dust collection system according to the present invention, and fig. 2 is a schematic front view of a water-sprayed wet dust collection system according to the present invention;
Fig. 3 is a schematic perspective view of a water-drenching wet dust collection system according to the present invention, and fig. 4 is a schematic perspective view of another angle of the water-drenching wet dust collection system according to the present invention. As shown in fig. 1 to 4, the water spray wet dust removal system comprises a box body 1, a dust filtering area 2, a dust collecting area 3 and a gas defogging area 4, wherein the box body 1 is used for installing the dust filtering area 2 and the dust collecting area 3 in a box-type structure, and a mounting frame body is provided for each motor, each channel and the like. The dust filtering area 2 and the dust collecting area 3 are respectively arranged at the upper part and the lower part of the box body 1, an air inlet 5 is arranged above the dust filtering area 2, the dust filtering area 2 is used for filtering dust-containing smoke entering from the air inlet 5, the dust filtering area 2 comprises a spraying device (not shown) and a filtering disc device (not shown), the spraying device is arranged above the filtering disc device, the gas defogging area 4 comprises an exhaust pipe 41, an air inlet 411 of the exhaust pipe 41 is arranged below the filtering disc device, the dust collecting area 3 is positioned below the dust filtering area 2, and the dust collecting area 3 comprises a water tank 31. The flue gas enters from the air inlet 5, enters the gas defogging area 4 after being dedusted by the dust filtering area 2 and is normally discharged, and the flue gas forms negative pressure due to the drawing action of the pipeline and the fan 43 between the air inlet 5 and the air outlet 6, so that the flue gas is further promoted to travel and be dedusted according to a preset track. The flue gas containing dust enters the dust filtering area 2 from the air inlet 5 to be filtered and descends to the dust collecting area 3 to be collected. For ease of understanding, the dust filtration zone 2, dust collection zone 3 and gas mist removal zone 4 described above will now be described in detail:
1. Dust filtering area 2
With continued reference to fig. 2 to 4, and with reference to fig. 5, fig. 5 is a schematic structural diagram of a dust filtering area of the water-spraying wet dust removal system according to the present invention. As shown in fig. 2 to 5, the dust filtering section 2 includes a shower device (not shown) for spraying water to reduce dust, a filter tray device (not shown) for filtering a combination of dust and water, and a baffle (not shown) for preventing smoke from being discharged without being filtered.
1. As shown in fig. 2 to 5, the spraying device comprises a plurality of spraying cross pipes 211, a water inlet pipe 212 and a water pump 213, the water pump 213 is movably connected with the box body 1, the water inlet of the water pump 213 is positioned below the water surface of the water tank 31, the water inlet end (not shown) of the water inlet pipe 212 is communicated with the water outlet (not shown) of the water pump 213, the water outlet end (not shown) of the water inlet pipe 212 is connected with the plurality of spraying cross pipes 211, the spraying cross pipes 211 are arranged above the filter disc device, a plurality of water spray openings (not shown) are arranged on each side wall or lower wall of the spraying cross pipes 211, when the water pump 213 is started, water in the water tank 31 is pumped into the water inlet pipe 212 under pressure by the water pump 213, and is dispersed into the spraying cross pipes 211 which are arranged in parallel, and the water spray openings are sprayed towards the filter disc device. The spraying function is that firstly, dust is subjected to primary dust removal (water curtain) when meeting water, and secondly, the dust is sprayed to the filter screen holes 224, so that the film is formed at the filter screen holes 224, and secondary dust removal (water film) is finished.
2. With continued reference to fig. 2 to 5, and with reference to fig. 6, fig. 6 is a schematic structural diagram of a filter disc device of the water-drenching wet dust removal system of the present invention. As shown in fig. 2 to 6, the filter tray device is divided into two parts, one part for filtering dust and water combination and the other part for scraping dust.
The first part comprises a first motor 221, a first rotating shaft 222 and a plurality of filter screen discs 223, the filter screen discs 223 are arranged in parallel from top to bottom and are parallel to a horizontal plane, the first rotating shaft 222 sequentially passes through the centers of the filter screen discs 223 from top to bottom, a plurality of filter screen discs 223 can be arranged according to requirements, three filter screen discs 223 shown in the figure are good embodiments, a spray transverse tube 211 is arranged above each filter screen disc 223 in parallel, a plurality of filter screen holes 224 are formed in the filter screen disc 223, the plurality of filter screen holes 224 are uniformly distributed, the first rotating shaft 222 is connected with the rotating shaft (not shown) of the first motor 221, when the first motor 221 is started, the first rotating shaft 222 drives the plurality of filter screen discs 223 to rotate, the spray surface of the spray transverse tube 211 can cover the whole filter screen disc 223 along with the rotation of the filter screen disc 223, dust after spraying is combined with water phase to form particle materials with different particle sizes, and falls on the filter screen discs 223 and contacts with the filter screen holes 224 to form a liquid package state, and in addition, and in a negative pressure state, dust is increased. Since the filter tray 223 has a plurality of layers from top to bottom, the pore size of the filter mesh 224 is set to a mode of being smaller in size for convenience of filtering, that is, the filter mesh 224 on the uppermost filter tray 223 is largest, the filter mesh 224 on the lowermost filter tray 223 is smallest, but the filter mesh 224 on the same filter tray 223 is the same in size, and the pore size of the smallest filter mesh 224 is smaller than the smallest particle size of the cleaned dust. Therefore, the pore diameter of the filter mesh 224 can be specifically designed according to the kind of dust cleaning by the purchasing manufacturer. And the porous absorption characteristic of the filter holes 224 can facilitate the dispersion and the diversion (large and small particles) of dust after entering. After the spraying of the spraying transverse pipe 211 and the filtering of the filter screen disc 223, the dust is combined with and adhered to the upper surface of the filter screen disc 223 at the uppermost layer of the filter screen disc 223, a small amount of dust is sprayed by the next spraying transverse pipe 211 and filtered by the filter screen disc 223 after passing through the filter screen holes 224, and the dust cleaning rate is nearly 100% after multiple times of filtering.
The second part serves as a first part, the second part is used for cleaning each filter screen disc 223, the second part comprises a second motor 231, a second rotating shaft 232 and a plurality of filter screen disc cleaning devices 233, one filter screen disc cleaning device 233 is correspondingly arranged above one filter screen disc 223, the spraying transverse pipe 211 is higher than a connecting rod 2333 of the filter screen disc cleaning device 233, each filter screen disc cleaning device is arranged in parallel with the filter screen disc 223, the second rotating shaft 232 sequentially penetrates through the centers of the plurality of filter screen disc cleaning devices 233 from top to bottom, the second rotating shaft 232 is connected with a rotating shaft (not shown) of the second motor 231, please continue to refer to fig. 2 to 6, and fig. 7 is a structural schematic diagram of the filter screen disc cleaning device of the water-spraying membrane wet dust removal system. As shown in fig. 2 to 7, the filter screen disc cleaning device 233 comprises a plurality of scrapers 2331, a plurality of brushes 2332, a plurality of connecting rods 2333 and a plurality of rotating shaft sleeves 2334, wherein the plurality of rotating shaft sleeves 2334 are sleeved on the second rotating shaft 232, the plurality of connecting rods 2333 are fixedly arranged on each rotating shaft sleeve 2334, the plurality of connecting rods 2333 are arranged in a radial mode by taking the rotating shaft sleeves 2334 as the center, each connecting rod 2333 is provided with one scraper 2331 and one brush 2332, the lower edge of each brush 2332 is lower than the lower edge of each scraper 2331, the length of each connecting rod 2333 is greater than the radius of each filter screen disc 223, when the second motor 231 is started, the second rotating shaft 232 drives the plurality of filter screen disc cleaning devices 233 to rotate, the bottoms of the filter screen disc cleaning devices 233 are in contact with the upper surface of the filter screen disc 223, at this moment, the scrapers 2331 and the brushes 2332 are attached to the filter screen disc 223, and dust particles adhered to the upper surface of the filter screen disc 223 are scraped by the scrapers 2331 and then cleaned by the brushes 2332, and the filter screen disc 2332 can be prevented from being worn out by the filter screen disc 223, and the filter screen disc 223 can be further kept in the position between the positions of the two filter screen disc 223 and the filter screen disc 223 except the positions of the upper surface of the brush 2332 due to the fact that the length of the brushes 2332 is greater than the length than the upper than the filter disc 223 and the filter screen disc 223. Under the drive of the first motor 221 and the second motor 231, the filter screen disk 223 and the filter screen disk cleaning device 233 rotate in the same direction or opposite directions, the rotating requirement and speed only need to meet the requirement that the moving areas of the scraping plate 2331 and the hairbrush 2332 cover the whole filter screen disk 223, when the filter screen disk 223 rotates, the scraping plate is scraped and then brushed, the vibration separation screen is vibrated, a part of the scraping plate 2331 and the hairbrush 2332 rotate along the filter screen disk 223 and then rotate to the outside of the filter screen disk 223, and at the moment, the scraped or brushed dust is scraped from the filter screen disk 223 along the moving direction of the scraping plate 2331. Polyurethane materials can be used for both the scraper 2331 and the brush 2332.
3. The dust filtering area 2 is further provided with a plurality of baffles, the baffles are arranged at the gap between the filter screen disc 223 and the box body 1, the installation position of the baffles is lower than that of the spraying transverse pipe 211, and when dust is sprayed by the spraying transverse pipe 211 and the running direction of the dust does not fall on the filter screen disc 223, due to the existence of the baffles, water-containing dust falls on the baffles, and the baffles incline towards the direction of the filter screen disc 223, so that the water-containing dust is guided onto the filter screen disc 223.
2. Dust collecting region 3
Referring to fig. 1 to 4, as shown in fig. 1 to 4, the dust collection area 3 includes a first funnel-shaped passage 321 for guiding the water-containing dust falling from the filter screen hole 224 cleaned by the brush 2332, a second funnel-shaped passage 331 for guiding the dust falling from the filter screen hole 224 cleaned by the scraper 2331, a first filter bag 322 for collecting the water-containing dust falling from the first funnel-shaped passage 321, and a second filter bag 332 for collecting the water-containing dust falling from the second funnel-shaped passage 331, the first funnel-shaped passage 321 is disposed under the filter screen tray 223, a first filter bag 322 is sleeved at the bottom of the first funnel-shaped passage 321, the second filter bag 331 is disposed under the filter screen tray cleaning device 233, a second filter bag 332 is sleeved at the bottom of the second funnel-shaped passage 331, and the water tank 31 is disposed under the first filter bag 322 and the second filter bag 332. In terms of water content, due to the negative pressure effect caused by the fan 43 and the flue gas running channel, the water content of the dust (slurry material) entering the first funnel-shaped channel 321 is higher than that of the dust (block material) entering the second funnel-shaped channel 331, so that the dust in the second filter bag 332 can be directly collected and then poured out, and the dust in the first filter bag 322 can be removed through the extrusion process. for this purpose, a cylinder 341, a push rod 342, a vertical plate 343, a horizontal plate 344 and a fixing block 345 are also provided in the dust collection area 3, the cylinder 341, the push rod 342, The diaphragm 344 and the vertical plate 343 are arranged on one side of the first filter bag 322, the fixed block 345 is arranged on the other side of the first filter bag 322, the air cylinder 341 is connected with one end of the push rod 342, the other end of the push rod 342 is connected with the vertical plate 343, the vertical plate 343 is perpendicular to the diaphragm 344, the diaphragm 344 is fixed on the top end of the vertical plate 343, the vertical plate 343 is parallel to the fixed block 345, the first filter bag 322 is arranged between the vertical plate 343 and the fixed block 345, the diaphragm 344 is higher than the fixed block 345, the diaphragm 344 is used for sealing the first filter bag when being extruded, when the air cylinder 341 is started, the push rod 342 drives the vertical plate 343 to move towards the fixed block 345 until the side, close to the fixed block 345, of the diaphragm 344 is positioned above the fixed block 345, the air cylinder 341 pushes extrusion, dust on the inner wall of the cloth of the filter bag is displaced, the water displacement reaches about 5 times of natural drainage time, and natural draining time is shortened. By this operation, the moisture in the aqueous dust in the first filter bag 32 is squeezed out, falls from the first filter bag 32 into the water tank 31, and the upper opening of the first filter bag 32 is closed by the cross plate 344, preventing the aqueous dust from returning to the first funnel 331. After the extrusion is completed, the dust in the first filter bag 32 is formed into a block shape, and the water is filtered by the filter cloth of the first filter bag 322, so that the water falling into the water tank 31 does not contain dust, and the water in the water tank 31 participates in the water dust removal cycle again. The dust blocks in the first filter bag 32 and the second filter bag 332 only need to be poured and recovered when the bags are full, and the cleaning is convenient.
2. Gas mist elimination zone 4
With continued reference to fig. 2 to 4, as shown in fig. 2 to 4, the gas mist elimination zone 4 is a pipe for discharging the gas filtered from the dust filtration zone 2, and since the dust filtration zone 2 is sprayed a plurality of times, a certain amount of moisture exists in the gas after dust elimination, and in order to eliminate the moisture, a plurality of baffle plates 42 are placed in the exhaust pipe 41, a plurality of baffle zones (not shown) are provided in the exhaust pipe 41, the plurality of baffle zones are arranged from top to bottom, each baffle zone has a plurality of parallel baffle plates 42, the baffle plates 42 are perpendicular to the horizontal plane, and the baffle plates 42 of two adjacent baffle zones are perpendicular to each other. The baffle 42 may have various structures, referring to fig. 8 and 9, fig. 8 is a schematic structural diagram of a baffle area of the water-sprayed wet dust collection system according to an embodiment of the present invention, and fig. 9 is a schematic structural diagram of a baffle area of the water-sprayed wet dust collection system according to another embodiment of the present invention. as shown in fig. 8, the baffle 42 is prismatic, and as shown in fig. 9, the baffle 42 is wavy. The purpose of the design of the baffles 42 is that when the air flows through the baffles 42, the air flows can rotate for more times when meeting the baffles 42, so that atomized air is attached to the baffles 42, the contact area between the atomized air and the baffles 42 is more, water (water mist) in the air flows is more easily caused to be condensed into water drops when meeting the cooling, the baffles 42 are not only provided with the other group of baffles 42 which are positioned above and perpendicular to the baffles in the same direction, but also the plurality of baffles 42 are designed in parallel, and the purpose is that when the air flows from the first group pass, part of water drops which are not cooled into water drops when meeting the baffles 42 can contact the baffles at another angle, the air flows rotate for more times, so that the atomized air is adsorbed on the baffles 42, the contact area is still more, the water drops in the air flows are more easily caused to be condensed into water drops when meeting the cooling, the water content of the discharged air is lower, and the discharge requirement is met. Therefore, at least two sets of baffles 42 are required to achieve the same angle. In the embodiment shown in fig. 2-4, there are three sets of such baffles 42. Besides enabling water vapor to cool and form water drops, the baffle plate 42 can prevent dust from entering the exhaust pipe 41 and then being discharged from the air outlet 6, and experiments show that dust cannot enter the exhaust pipe 41 when the device is operated, but when the baffle plate 42 and the exhaust pipe 41 are only used for experiments with water vapor and dust, the baffle plate 42 has the effect because the water drops on the baffle plate 42 can be combined with the dust. In the gas defogging zone 4, the height of the exhaust pipe 41 is stretched to be higher than the air inlet 5 on the dust filtering zone 2, namely, the height of the air outlet 6 of the exhaust pipe 41 is larger than the height of the air inlet 5. In the embodiment shown in the drawings, the air inlet 411 of the exhaust pipe 41 is disposed on the side wall of the case 1 close to the first funnel-shaped channel 321, the position of the air inlet 411 is lower than the position of the filter screen 223 and higher than the position of the first funnel-shaped channel 321, and there may be various positions of the air inlet 411, such as the side wall of the upper port of the first funnel-shaped channel 321, etc., so that the air filtered by the dust filtering area 2 is sent to the air demisting area 4, but no dust is taken away, and all the effective settings are conceivable by the apparatus. The air outlet 6 of the exhaust pipe 41 is communicated with the fan 43, and the flue gas enters from the air inlet 5 until exiting from the air outlet 6, and the flue gas has great guidance quality in the whole flow direction process due to the drawing effect of the fan 43.
The test data of the water-drenching membrane wet dust removal system are specifically as follows:
therefore, the water-drenching film type wet dust collection system provided by the invention is effective in dust collection effects of metal dust, nonmetal dust, hydrophilic dust, non-hydrophilic dust and large and small particles, and is convenient to operate, water-saving and good in filtering effect.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (6)
1. The water spraying water film type wet dust removal system is characterized by comprising a box body, a dust filtering area, a dust collecting area and a gas mist removing area, wherein the dust filtering area and the dust collecting area are arranged in the box body, an air inlet is formed in the upper part of the dust filtering area, the dust filtering area comprises a spraying device and a filtering disc device, the spraying device is arranged above the filtering disc device, the gas mist removing area comprises an exhaust pipe, an air inlet of the exhaust pipe is arranged below the filtering disc device, the dust collecting area is positioned below the dust filtering area, the dust collecting area comprises a water tank,
The spraying device comprises a plurality of spraying transverse pipes, a water inlet pipe and a water pump,
The filter disc device comprises a first motor, a first rotating shaft and a plurality of filter disc discs, wherein the first rotating shaft is connected with the rotating shaft of the first motor, the first rotating shaft penetrates through the centers of the filter disc discs, the filter disc discs are arranged in parallel, the spray transverse pipe is arranged above each filter disc in parallel, a plurality of filter meshes are arranged on each filter disc, when the first motor is started, the first rotating shaft drives the filter disc discs to rotate,
The filter disc device also comprises a second motor, a second rotating shaft and a plurality of filter disc cleaning devices, wherein the second rotating shaft is connected with the rotating shaft of the second motor, the second rotating shaft penetrates through the centers of the plurality of filter disc cleaning devices, the plurality of filter disc cleaning devices are arranged in parallel, one filter disc cleaning device is correspondingly arranged above one filter disc, when the second motor is started, the second rotating shaft drives the plurality of filter disc cleaning devices to rotate, the bottom of the filter disc cleaning device contacts the upper surface of the filter disc,
The dust collecting area comprises a first funnel-shaped channel, a second funnel-shaped channel, a first filter bag and a second filter bag, wherein the first funnel-shaped channel is arranged below the filter screen disc, the first filter bag is sleeved at the bottom of the first funnel-shaped channel, the second funnel-shaped channel is arranged below the filter screen disc cleaning device, the second filter bag is sleeved at the bottom of the second funnel-shaped channel, the water tank is positioned below the first filter bag and the second filter bag,
The dust filtering area is also provided with a plurality of baffles, the baffles are arranged at the clearance between the filter screen discs and the box body, and the pore diameters of the filter screen holes on the filter screen discs are sequentially reduced from top to bottom.
2. The water-drenching film type wet dust removal system of claim 1, wherein one end of the spraying cross pipe is a closed end, the other end is connected with the water outlet end of the water inlet pipe, the water inlet end of the water inlet pipe is communicated with the water outlet of the water pump, the water inlet of the water pump is communicated with the water tank through a pipeline, the water pump is movably connected with the tank body, the spraying cross pipe is arranged above the filter disc device, a plurality of water spray ports are arranged on the pipe wall of the spraying cross pipe,
When the water pump is started, water in the water tank enters the spraying transverse pipe through the water inlet pipe and is sprayed out through the water spraying port.
3. The water-drenching film type wet dust removal system of claim 1, wherein the filter screen disc cleaning device comprises a plurality of scraping plates, a plurality of brushes, a plurality of connecting rods and a plurality of rotating shaft sleeves, the rotating shaft sleeves are sleeved on the second rotating shaft, the rotating shaft sleeves can move up and down and are fixed on the second rotating shaft, a plurality of connecting rods are fixed on each rotating shaft sleeve and are arrayed in a radial mode by taking the rotating shaft sleeve as a center, each connecting rod is provided with one scraping plate and one brush, the brushes are parallel and attached to the scraping plates, the lower edges of the brushes are lower than the lower edges of the scraping plates, the length of each connecting rod is larger than the radius of the filter screen disc,
When the filter screen disk and the filter screen disk cleaning device rotate, the scraping plate and the brush on the connecting rod are attached to the filter screen disk, and the moving area of the scraping plate and the brush covers the whole filter screen disk.
4. The water-drenching wet dust collecting system of claim 1, wherein the dust collecting area further comprises a cylinder, a push rod, a longitudinal plate, a transverse plate and a fixing block, wherein the cylinder, the push rod, the transverse plate and the longitudinal plate are arranged on one side of the first filter bag, the fixing block is arranged on the other side of the first filter bag, the cylinder is connected with one end of the push rod, the other end of the push rod is connected with the longitudinal plate, the longitudinal plate is perpendicular to the transverse plate, the transverse plate is fixed on the top end of the longitudinal plate, the longitudinal plate is parallel to the fixing block, the first filter bag is arranged between the longitudinal plate and the fixing block, the transverse plate is higher than the fixing block,
When the cylinder is started, the push rod drives the longitudinal plate to move towards the direction of the fixed block until the longitudinal plate and the first filter bag are attached to the fixed block, and the transverse plate covers the upper portion of the fixed block.
5. The wet dust collecting system according to claim 4, wherein the gas mist removing area further comprises a baffle plate and a fan, the gas inlet of the exhaust pipe is arranged on the side wall of the box body close to the first funnel-shaped channel, the position of the gas inlet is lower than that of the filter screen disc and higher than that of the first funnel-shaped channel, the air outlet of the exhaust pipe is communicated with the fan, a plurality of baffle areas are arranged in the exhaust pipe, the baffle areas are arranged from top to bottom, each baffle area is provided with a plurality of parallel baffle plates, the baffle plates are perpendicular to the horizontal plane, and the baffle plates of two adjacent baffle areas are perpendicular to each other.
6. The water-drenching wet dust collection system as claimed in claim 5, wherein the baffle plate is in a wave shape or a prismatic shape.
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| JP2003225518A (en) * | 2002-01-31 | 2003-08-12 | Jfe Engineering Kk | Solid-liquid separation device |
| DE202018106203U1 (en) * | 2018-10-30 | 2020-02-03 | Big Dutchman International Gmbh | Filtration device for ultrafine filtration |
| CN213348279U (en) * | 2020-09-25 | 2021-06-04 | 扬州星航发电设备有限公司 | Tail gas purification system of diesel generating set |
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