CN211069511U

CN211069511U - Leading filtering formula wet dedusting fan

Info

Publication number: CN211069511U
Application number: CN201921654941.1U
Authority: CN
Inventors: 宁海峰; 王斌
Original assignee: Tai'an Huanyu Dedusting Technology Co ltd
Current assignee: Tai'an Huanyu Dedusting Technology Co ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-07-24
Anticipated expiration: 2029-09-30

Abstract

The utility model provides a leading filtering formula wet-type dust exhausting fan, includes dryer, first leading filtering device, the leading filtering device of second and dehydrator, and the leading filtering device of second is installed at the dryer front end, and first leading filtering device is installed at the leading filtering device front end of second, and the dehydrator is installed at the dryer rear end, intermediate position department in the dryer sets up the motor seal cover, and fixed mounting has the connecting plate between the periphery of motor seal cover and the dryer inner wall, installs the motor in the motor seal cover, and the dryer is worn out via the connecting plate to the wire of motor. The utility model has the advantages of: the manufacturing cost is reduced, the water retaining rings and the annular water collecting grooves which are arranged in the air duct and the filtering barrels at all levels can further adsorb and separate dust-containing liquid drops, and the dehydrator is arranged at the rear end of the air duct and can further separate gas from water of the treated gas, so that the humidity of the discharged gas is ensured to be in a normal range, and the influence on site construction due to overhigh humidity is avoided.

Description

Leading filtering formula wet dedusting fan

Technical Field

The utility model belongs to the technical field of the dust collecting equipment technique and specifically relates to a leading filtering formula wet dedusting fan.

Background

The wet dust removal fan is a device for performing gas-water separation by means of capture of dust by water mist and centrifugal action of an impeller in rotation to finally achieve the purpose of dust removal, and is generally applied to the construction field with serious dust pollution such as an excavation operation site.

Disclosure of Invention

In order to solve the above problem, an object of the utility model is to provide a leading filtering formula wet dust exhausting fan, install the wiper plate on every flabellum of its inside fan, the air-water separation ability when can improve the impeller rotation, the leading filtering device of two-stage is installed to the front end of dryer, can further guarantee the dust removal effect of integrated device, and the rear end installation dehydrator of dryer can guarantee that the gas humidity after the dust removal processing maintains in normal range.

The utility model provides a technical scheme that its technical problem adopted is: a front-located filtering type wet dust removal fan comprises an air duct, a first front-located filtering device, a second front-located filtering device and a dehydrator, wherein the second front-located filtering device is installed at the front end of the air duct, the first front-located filtering device is installed at the front end of the second front-located filtering device, the dehydrator is installed at the rear end of the air duct, a motor sealing cover is arranged at the middle position in the air duct, a connecting plate is fixedly installed between the periphery of the motor sealing cover and the inner wall of the air duct, a motor is installed in the motor sealing cover, a lead of the motor penetrates out of the air duct through the connecting plate, an output shaft of the motor penetrates out of the motor sealing cover to be connected with an impeller, a first filter screen is fixedly installed on the inner wall of the air duct at the front side of the impeller, an inclined water scraping plate is arranged on one side of each blade of the impeller, a first annular water collecting groove is arranged on the inner wall of the air duct, the bottom of the first annular water collecting tank is provided with a first water discharging opening, the bottom of the second annular water collecting tank is provided with a second water discharging opening, a first water retaining ring with the diameter smaller than that of the air duct is further installed inside the second annular water collecting tank, the first front-mounted filtering device comprises a first filter cylinder shell, a first sprayer is installed at the front end inside the first filter cylinder shell, a second filter screen is fixedly installed on the rear side of the first sprayer, a first support is installed on the inner wall of the first filter cylinder shell on the rear side of the second filter screen side by side, a first rotating shaft is horizontally installed on the first support, a first driven impeller is matched and sleeved on the first rotating shaft, a third annular water collecting tank is installed at the air outlet position at the rear end of the first filter cylinder shell, the inside of the third annular water collecting tank is provided with a second water retaining ring with the diameter smaller than that of the first filter cylinder shell, and the second front-mounted filtering device comprises a, the inside front end of second filter cartridge casing installs the second spray thrower, and second spray thrower spun water smoke diameter is less than first spray thrower spun water smoke diameter, at second spray thrower rear side fixed mounting third filter screen, and wherein the mesh diameter on the third filter screen is less than the mesh diameter on the second filter screen, and the mesh diameter on the first filter screen is less than the mesh diameter on the third filter screen, installs the second support on the second filter cartridge casing inner wall of third filter screen rear side by side, and horizontal mounting has the second axis of rotation on the second support, cooperation suit second driven impeller in the second axis of rotation, the fourth annular water catch bowl is installed to air outlet position department at second filter cartridge casing rear end, and the internally mounted diameter of fourth annular water catch bowl is less than the third water retaining ring of second filter cartridge casing.

The front end of the first annular water collecting groove corresponds to the position of the middle and rear end parts of the impeller, and the rear end of the first annular water collecting groove is positioned behind the impeller. The air inlet position of the front end of the first filter cylinder shell is in an open bell mouth shape. The first sprayer comprises a first water inlet pipe and an annular first spraying pipe, the first spraying pipe is matched with the inner wall of the front end of the first filter cylinder shell, a plurality of first spraying ports are formed in the first spraying pipe, and each first spraying port sprays water mist towards the central axis position of the first driven impeller. The second spray thrower includes the second shower of second inlet tube and Y type, installs the booster pump on the second inlet tube, and the inner wall of a section of thick bamboo casing front end is strained with the second in the periphery of second shower cooperatees, set up a plurality of second on the second shower and spray the mouth, every second sprays the mouth and all sprays water smoke towards the axis position department of the driven impeller of second. The first water retaining ring, the second water retaining ring and the third water retaining ring are all straight tube-shaped, the distance between the outer peripheral wall of the first water retaining ring and the inner wall of the air duct, the distance between the outer peripheral wall of the second water retaining ring and the inner wall of the first filter cartridge housing, and the distance between the outer peripheral wall of the third water retaining ring and the inner wall of the second filter cartridge housing are all equal in position, the second annular water collecting tank is located at the rear side position of the first water retaining ring, the height of the cylinder wall of the first water retaining ring is larger than the width of the groove of the second annular water collecting tank, the height of the cylinder wall of the second water retaining ring is larger than the width of the groove of the third annular water collecting tank, the fourth annular water collecting tank is located at the rear side position of the third water retaining ring, and the height of the cylinder wall of the third water retaining ring is larger than the width of the groove of. The dehydrator comprises a first shell fixedly connected with the rear end of the air duct, a plurality of folded plates are inserted in the first shell side by side, the folded plates are all arranged in parallel along the length direction of the first shell, a bent air duct is formed between every two adjacent folded plates, a water baffle is fixedly mounted at the bending position of each folded plate, and the opening direction of each water baffle is opposite to the direction of air flow in the air duct. The dehydrator comprises a second shell fixedly connected with the rear end of the air duct, a spiral flow plate is arranged on the inner peripheral wall of the second shell, and the central axis of the spiral flow plate coincides with the central axis of the second shell in the length direction. The wiper blade extends from the blade root to the blade end continuously along the length direction of the blade. The third filter screen comprises a first filter screen, a second filter screen and a third filter screen, the first filter screen and the third filter screen are positioned at two sides of the second filter screen, the first filter screen, the second filter screen and the third filter screen form a circle matched with the inner peripheral wall of the second filter cartridge shell, one side of the first filter screen close to the second filter screen is vertically provided with a third rotating shaft, the middle position of the second filter screen is vertically provided with a fourth rotating shaft, one side of the third filter screen close to the second filter screen is vertically provided with a fifth rotating shaft, the bottoms of the third rotating shaft, the fourth rotating shaft and the fifth rotating shaft are all arranged on the second filter cartridge shell, the top ends of the third rotating shaft, the fourth rotating shaft and the fifth rotating shaft all penetrate through the top of the second filter cartridge shell, the positions corresponding to the third rotating shaft, the fourth rotating shaft and the fifth rotating shaft penetrating through the second filter cartridge shell are fixedly provided with an angle adjusting cartridge, first gear is installed to the one end that the third axis of rotation is located the angular adjustment box, and the second gear is installed to the one end that the fourth axis of rotation is located the angular adjustment box, and the third gear is installed to the one end that the fifth axis of rotation is located the angular adjustment box, and the rack is installed in the cooperation of angular adjustment box, and the rack level sets up, the rack meshes with first gear, second gear and third gear mutually, and the pulling rack enables first filter screen, second filter screen and third filter screen to take place to rotate, set up the screw hole on the angular adjustment box, the screw hole fit installation fixing bolt, rotatory fixing bolt can compress tightly fixedly the rack.

The utility model has the advantages of: a leading filtering formula wet dedusting fan, install the leading filtering device of two-stage at the front end of dryer, and the leading filtering device of second can spray the less dust of high-pressure superfine atomizing water smoke adsorption particles diameter to improve the dust removal effect of whole device, the first spray thrower of dryer front end can spray water smoke, utilize the droplet in the water smoke to catch the dust particle in the air, later air and the water smoke flow direction impeller that contains dirt, respectively install a water scraping plate on every blade of impeller. The wiper blade is positioned at the edge of the air outlet side of the blade. The water scraping plate continuously extends to the end part of the blade from the root part of the blade, a continuous reverse flow groove is formed between the water scraping plate and the blade, and the airflow flowing through each blade is forced to generate sharp turning at the reverse flow groove when being separated from the blade to continuously flow, so that most of liquid drops in the air can be remained in the reverse flow groove, the adsorption capacity of the impeller on dust-containing liquid drops can be improved, and the effect of gas-water separation is improved. In addition, the continuous reverse flow tank can collect the liquid drops retained in the continuous reverse flow tank and discharge the liquid drops into the first annular water collecting tank by utilizing the centrifugal force generated by the rotation of the impeller, and finally discharge the liquid drops from the first water discharging port. The first annular water collecting tank is positioned at the rear end of the impeller, and the water scraping plate which is obliquely arranged is matched to play a role in guiding, most of dust-containing liquid drops attached to the impeller can be directly thrown into the first annular water collecting tank.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged view of the cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic three-dimensional structure of an impeller;

FIG. 4 is an enlarged view of the cross-sectional view taken along line B-B of FIG. 1;

FIG. 5 is an enlarged view of the cross-sectional view taken along line C-C of FIG. 1;

FIG. 6 is a view from direction D of FIG. 1;

FIG. 7 is an enlarged partial view of I of FIG. 6;

FIG. 8 is a schematic view of another dehydrator installed in the present invention;

FIG. 9 is a schematic three-dimensional view of the dehydrator of the configuration shown in FIG. 8;

fig. 10 is a schematic structural view of another embodiment of the third filter screen according to the present invention;

FIG. 11 is a schematic view of the third filter screen at the maximum windage resistance;

fig. 12 is a schematic view of the third filter screen in a state where the wind resistance is minimum.

In the figure, a wind cone 2 motor sealing cover 3 is connected with a plate 4 motor 5 impeller 6 first filter screen 7 scraping plate 8 first annular water collecting tank 9 second annular water collecting tank 10 first water discharging port 11 first water retaining ring 12 first filter cartridge shell 13 first sprayer 14 first filter screen 15 first support 16 first rotating shaft 17 first driven impeller 18 third annular water collecting tank 19 second water retaining ring 20 second filter cartridge shell 21 second sprayer 22 second filter screen 23 second support 24 second rotating shaft 25 second driven impeller 26 fourth annular water collecting tank 27 third water retaining ring 28 first water inlet pipe 29 first spray nozzle 30 first spray nozzle 31 second water inlet pipe 32 second spray pipe 33 booster pump 34 second spray nozzle 35 first housing 36 folded plate 37 wind channel 38 water retaining plate 39 second housing 40 vortex plate 41 second water discharging port 42 first filter screen 43 second filter screen 44 third filter screen 44 45 third rotating shaft 46 fourth rotating shaft 47 fifth rotating shaft 48 angle adjusting box 49 first gear 50 second gear 51 third gear 52 rack 53 fixing bolt.

Detailed Description

A leading filtering formula wet dedusting fan, as shown in fig. 1, including dryer 1, leading filtering device of first, leading filtering device of second and dehydrator, the leading filtering device of second is installed at dryer 1 front end, and leading filtering device of first is installed at the leading filtering device front end of second to realize the multistage processing to dirty gas, the dehydrator is installed at dryer 1 rear end, maintains in normal humidity within range with the assurance final combustion gas. The motor sealing cover 2 is arranged at the middle position in the air duct 1, as shown in fig. 2, a hollow connecting plate 3 is fixedly installed between the periphery of the motor sealing cover 2 and the inner wall of the air duct 1, and the number of the connecting plates 3 can be one or more, preferably three or four. The connecting plate 3 fixes the motor sealing cover 2 in the air duct 1, and the connecting plate 3 can be hollow. Install motor 4 in motor sealed cowling 2, the dryer 1 is worn out via connecting plate 3 to the wire of motor 4, the output shaft of motor 4 wears out motor sealed cowling 2 and installs impeller 5, and impeller 5 rotates and forms the air current and provides power for the dust removal of whole device. The motor sealing cover 2 is arranged on the premise of not influencing the air speed of the airflow in the air duct 1, so that the motor 4 in the air duct can be protected from being influenced by water vapor, the damp is prevented, and the service life of the motor is prolonged.

The first filter screen 6 is fixedly installed on the inner wall of the air duct 1 at the front side of the impeller 5, dust-containing liquid drops can pass through the first filter screen 6 to be filtered under the driving of air flow in the air duct 1, and the first filter screen 6 can be formed by cross weaving of fine steel wires and is provided with fine meshes. As shown in fig. 3, an inclined wiper 7 is disposed on one side of each blade of the impeller 5, the wiper 7 is disposed along the length direction of the blade, and the wiper 7 is located at the edge of the air outlet side of the blade. When impeller 5 rotated, the setting of wiper 7 can improve the adhesive force of impeller 5 to the dusty liquid drop, borrow centrifugal force with it and get rid of on dryer 1 inner wall and become the gas-water separation purpose when living dusty liquid drop, if do not set up wiper 7, the dusty liquid drop of adnexed on impeller 5 can separate with impeller 5 when its pivoted, and on some dusty liquid drops can not get rid of dryer 1 inner wall, but follow the air current and continue to flow in dryer 1, this dust collection efficiency that will influence the integrated device.

Corresponding to the position of impeller 5 rear end portion, install first annular water catch bowl 8 on the inner wall of dryer 1, install second annular water catch bowl 9 on the inner wall of dryer 1 rear end, first drain 10 has been seted up to the bottom of first annular water catch bowl 8, and second outlet 41 has been seted up to the bottom of second annular water catch bowl 9, compare in patent document CN200810015711.0 collect the bilayer structure of dusty liquid drop, owing to have the impeller 5 of scraping board 7 can throw into first annular water catch bowl 8 with adnexed dusty liquid drop most on it, so the utility model discloses this place adopts monolayer structure's water catch bowl, not only can avoid the jam influence that brings after long-time the use, can also reduce the required raw and other materials of dryer preparation to reduce the volume of complete machine. The inside of second annular water catch bowl 9 still installs the first manger plate ring 11 that the diameter is less than dryer 1, and the setting of first manger plate ring 11 and second annular water catch bowl 9 can play further adsorption and separation's effect to the inside dirt-laden liquid drop of dryer 1.

The first front filtering device comprises a first filter cartridge shell 12, a first sprayer 13 is mounted at the front end inside the first filter cartridge shell 12, water mist sprayed by the first sprayer 13 is mixed with dust to form dust-containing liquid drops, so that subsequent adsorption dust removal and gas-water separation operations are facilitated, a second filter screen 14 is fixedly mounted at the rear side of the first sprayer 13, two first supports 15 are mounted on the inner wall of the first filter cartridge shell 12 at the rear side of the second filter screen 14 side by side, a first rotating shaft 16 is horizontally mounted between the two first supports 15, a first driven impeller 17 is sleeved on the first rotating shaft 16 in a matched mode, a third annular water collecting tank 18 is mounted at the air outlet position at the rear end of the first filter cartridge shell 12, and the inside mounting diameter of the third annular water collecting tank 18 is smaller than that of a second water blocking ring 19 of the first filter cartridge shell 12. The second pre-filtering device comprises a second filter cartridge shell 20, a second sprayer 21 is arranged at the front end inside the second filter cartridge shell 20, the diameter of water mist sprayed by the second sprayer 21 is smaller than that of water mist sprayed by the first sprayer 13, dust with smaller particle diameter can be easily captured and adsorbed, a third filter screen 22 is fixedly arranged at the rear side of the second sprayer 21, wherein the diameter of a mesh hole on the third filter screen 22 is smaller than that of a mesh hole on the second filter screen 14, the diameter of a mesh hole on the first filter screen 6 is smaller than that of a mesh hole on the third filter screen 22, two second supports 23 are arranged on the inner wall of the second filter cartridge shell 20 at the rear side of the third filter screen 22 side by side, a second rotating shaft 24 is horizontally arranged between the two second supports 23, a second driven impeller 25 is matched and sleeved on the second rotating shaft 24, a fourth annular water collecting tank 26 is arranged at an air outlet position at the rear end of the second filter cartridge shell 20, the fourth annular water collection groove 26 is internally installed with a third water retaining ring 27 having a smaller diameter than the second cartridge housing 20. The dust-containing gas is dedusted by the first preposed filtering device, the second preposed filtering device and the air duct 1 in sequence, and finally enters the dehydrator for dehydration treatment and then is discharged.

When the utility model is used, firstly, the motor 4 is started to drive the impeller 5 to rotate, the rotating impeller 5 enables the air duct 1 to generate air flow from the air inlet position to the air outlet position, the first driven impeller 17 and the second driven impeller 25 are driven to rotate, the gas with dust firstly enters the first pre-filtering device, the first sprayer 13 always keeps spraying water mist in the dust removing process, when the gas with dust passes through the first sprayer 13, the dust and the water mist form dust-containing liquid drops, the dust-containing liquid drops firstly pass through the second filter screen 14 to be primarily filtered under the action of the air flow, the dust-containing liquid drops adsorbed by the second filter screen 14 flow into the third annular water collecting tank 18 under the action of gravity and the action of the air flow, most of the dust-containing liquid drops passing through the second filter screen 14 can be attached to the first driven impeller 17, the rest of the dust-containing liquid drops are thrown to the inner wall of the first filter cylinder shell 12 by centrifugal force when the first filter cylinder shell 12 rotates, and finally enter the third annular water collecting tank 18 under the action of the air flow, the dust-containing liquid drops attached to the first driven impeller 17 enter the water outlet to be discharged under the action of gravity after being accumulated to a certain degree, a small part of the dust-containing liquid drops which are not attached to the first driven impeller 17 enter the space between the second water retaining ring 19 and the third annular water collecting tank 18 along with the air flow, the air flow bends and flows to realize secondary air-water separation, and then enters the second pre-filtering device through the inner space of the second water retaining ring 19, and the air flow is lengthened when passing between the second water retaining ring 19 and the third annular water collecting tank 18, in addition, due to the mutual collision of the inlet air flow and the outlet air flow, most of the dust-containing liquid drops in the subsequent air flow are attached to the outer wall of the second water retaining ring 19 and the third annular water collecting groove 18, and due to the trend of the air flow, the dust-containing liquid drops attached to the outer wall of the second water retaining ring 19 are blown into the third annular water collecting groove 18, which is a primary dust removal treatment in the first pre-filtering device.

The dust-containing gas after being processed by the first pre-filtering device enters the second pre-filtering device to be processed again, the type of the part in the second pre-filtering device is the same as that of the first pre-filtering device, the dust removal processing mode is approximately the same, the diameter of water mist particles sprayed by the second sprayer 21 is smaller, the diameter of meshes on the third filter screen 22 is smaller than that of the second filter screen 14, dust with smaller particle diameter can be effectively captured and filtered and separated, and the secondary dust removal processing in the second pre-filtering device is performed.

The dust-containing gas discharged after being processed by the second pre-filtering device enters the air duct 1, dust-containing liquid drops are filtered again through the first filter screen 6 under the action of the air flow, the diameter of the meshes of the first filter screen 6 is smaller than that of the second filter screen 14 and the third filter screen 22, dust with smaller particle diameter can be adsorbed and filtered again, the dust-containing liquid drops adsorbed by the first filter screen 6 flow into the first annular water collecting tank 8 under the action of gravity and the action of the air flow, most of the dust-containing liquid drops passing through the first filter screen 6 are attached to the blades of the impeller 5, the rest of the dust-containing liquid drops continuously move in the air duct 1 along with the air flow at the peripheral positions of the impeller 5, the dust-containing liquid drops attached to the impeller 5 are gradually accumulated to the vicinity of the water scraping plate 7 along with the rotation of the impeller 5, and then are thrown into the first annular water collecting tank 8 by centrifugal force under the guiding action of the water scraping plate 7 and the blowing of the air flow, the dust-containing liquid drops in the first annular water collecting tank 8 enter the first water discharging port 10 under the action of gravity to be discharged after accumulating to a certain degree, a small part of dust-containing liquid drops which are not attached to the impeller 5 firstly enter between the first water retaining ring 11 and the second annular water collecting tank 9 along with the air flow, then are discharged out of the air duct 1 through the inner space of the first water retaining ring 11 to enter the dehydrator, when the dust-containing liquid drops enter and exit between the first water retaining ring 11 and the second annular water collecting tank 9, due to the lengthening of the stroke of the air flow and the mutual collision of the air flow, most of the dust-containing liquid drops in the subsequent air flow are attached to the outer wall of the first water retaining ring 11 and the second annular water collecting tank 9, due to the trend of the air flow, the dust-containing liquid drops attached to the outer wall of the first water retaining ring 11 are blown into the second annular water collecting tank 9, and the dust-containing liquid drops in the second annular water collecting tank 9, the secondary dust removal operation in the air duct 1 is completed, and the gas exhausted from the air duct 1 enters the dehydrator for dehydration treatment so as to ensure that the humidity of the finally exhausted gas is maintained in a normal range.

Preferably, in order to improve the dust adsorption capacity of the whole device, the air inlet position at the front end of the first filter cylinder housing 12 is in an open bell mouth shape, so that the contact area between the air inlet position of the first filter cylinder housing 12 and the external space can be increased, and the dust removal efficiency of the device is further improved.

Preferably, as shown in fig. 4, the first sprayer 13 includes a first water inlet pipe 28 and an annular first spray pipe 29, the first spray pipe 29 is matched with the inner wall of the front end of the first filter cartridge housing 12, a plurality of first spray ports 30 are provided on the first spray pipe 29, each first spray port 30 sprays water mist towards the central axis position of the first driven impeller 17, the water mist sprayed by the first spray pipe 29 arranged circumferentially can be mixed with dust in all directions, the capture efficiency of the water mist on the dust is improved, and the dust removal efficiency of the whole device is improved.

Preferably, as shown in fig. 5, the second sprayer 21 includes a second water inlet pipe 31 and a Y-shaped second spray pipe 32, a booster pump 33 is installed on the second water inlet pipe 31, the outer circumference of the second spray pipe 32 is fitted with the inner wall of the front end of the second filter cartridge housing 20, the second spraying pipe 32 is provided with a plurality of second spraying ports 34, each second spraying port 34 sprays water mist towards the central axis position of the second driven impeller 25, the diameter of the second spraying port 34 is smaller than that of the first spraying port 30, under the effect of booster pump 33, second spray thrower 21 can spout the superfine atomizing water smoke of high pressure, can effectively catch the less dust of particle diameter, and subsequent adsorption separation of being convenient for, the resistance when dusty gas gets into second cartridge case 20 from first cartridge case 12 can be reduced to the second shower 32 that the Y type set up, is favorable to the dust adsorption separation of dusty gas in the leading filter equipment of second to be handled.

Preferably, the first water retaining ring 11, the second water retaining ring 19 and the third water retaining ring 27 are all straight tube-shaped, the distance between the outer peripheral wall of the first water retaining ring 11 and the inner wall of the air duct 1, the distance between the outer peripheral wall of the second water retaining ring 19 and the inner wall of the first filter cartridge housing 12, and the distance between the outer peripheral wall of the third water retaining ring 27 and the inner wall of the second filter cartridge housing 20 are all equal everywhere, the second annular water collecting tank 9 is located at the rear side position of the first water retaining ring 11, the height of the tube wall of the first water retaining ring 11 is greater than the width of the second annular water collecting tank 9, the third annular water collecting tank 18 is located at the rear side position of the second water retaining ring 19, the height of the tube wall of the second water retaining ring 19 is greater than the width of the third annular water collecting tank 18, the fourth annular water collecting tank 26 is located at the rear side position of the third water retaining ring 27, and the height of the tube wall of the third water retaining. Compared with the water retaining cover obliquely arranged in the patent document CN201020575594.6, the straight cylindrical water retaining ring can reduce the wind resistance in the first filter cartridge housing 12, the second filter cartridge housing 20 and the wind tube 1 to a great extent, so as to reduce the energy consumption, the height of the cylindrical wall of the water retaining ring is greater than the width of the water collecting tank, the stroke of the airflow between the water retaining ring and the water collecting tank can be further increased, and the dust-containing liquid drops are attached to the greatest extent, so as to achieve the purposes of gas-water separation and final dust removal.

Preferably, the dehydrator comprises a first housing 35 fixedly connected with the rear end of the air duct 1, as shown in fig. 6, a plurality of folded plates 36 are inserted in the first housing 35 side by side, the folded plates 36 are all arranged in parallel along the length direction of the first housing 35, a bent air duct 37 is formed between two adjacent folded plates 36, and a drainage groove can be further arranged at the insertion position of the folded plate 36 and the first housing 35 for collecting condensed water mist in the dust-removing gas. As shown in fig. 7, a water deflector 38 is fixedly installed at the bent position of each flap 36, and the opening direction of the water deflector 38 is opposite to the air flow direction in the air duct 37. When the dedusting gas enters the first shell 35 from the air duct 1, the bent air duct 37 can increase the stroke of the dedusting gas in the multi-folded-plate filter, the opening direction of the water baffle 38 arranged at the bent position of the folded plate 36 is opposite to the flowing direction of the dedusting gas, so that the dedusting gas can collide with each other at the position of the water baffle 38, the stroke of the dedusting gas in the air duct 37 is increased to a certain extent, the adsorption of the water in the dedusting gas by the water baffle 38 and the folded plate 36 is facilitated, the gas-water separation is further realized, and the humidity discharged from the first shell 35 is maintained in a normal range.

Preferably, the dehydrator can also be a mechanism shown in fig. 8, and includes a second housing 39 fixedly connected to the rear end of the air duct 1, as shown in fig. 9, a spirally arranged swirl plate 40 is installed on the inner peripheral wall of the second housing 39, the central axis of the swirl plate 40 coincides with the central axis of the second housing 39 in the length direction, when viewed from the end face of the swirl plate 40, no gap is formed in the middle of the second housing, the dust-removing gas entering the air duct 1 can be completely contacted with the swirl plate 40 under the guiding action of the swirl plate 40 and then discharged out of the second housing 39, the gas flowing along the swirl plate 40 can increase the stroke in the second housing 39, and the spirally arranged swirl plate 40 can generate centrifugal force for the internal gas to collide with the inner peripheral wall of the second housing 39, which is favorable for the adsorption of the swirl plate 40 and the inner peripheral wall of the second housing 39 on the moisture in the dust-removing gas, so as to further improve the efficiency of water-gas separation, the drying degree of the finally discharged gas is ensured, and the influence of overlarge humidity on the operating environment of workers is avoided.

A leading filtering formula wet dust removal fan can carry out effective dust removal operation to the more air that contains the dust, accomplish hyperfine filtration through multistage filtering device, however, when the dust that contains is not many in the air and the dust removal requirement is lower, just can effectively accomplish the dust removal operation through first leading filtering device and dryer 1 and inside impeller 5, in order to reduce the windage, suitably reduce motor 4's load, third filter screen 22 and air current area of contact's size in the leading filtering device of adjustable second, and then reduce the windage of third filter screen 22 to whole device, play energy saving and emission reduction's effect, for realizing above-mentioned purpose, third filter screen 22's structure is as follows: as shown in fig. 10, the third filter 22 includes a first filter 42, a second filter 43 and a third filter 44, the first filter 42 and the third filter 44 are located at two sides of the second filter 43, and the first filter 42, the second filter 43 and the third filter 44 form a circular shape matching with the inner peripheral wall of the second filter cartridge housing 20. First filter screen 42 is close to the vertical third axis of rotation 45 of installing in one side of second filter screen 43, and the vertical fourth axis of rotation 46 of installing in intermediate position of second filter screen 43, and the vertical fifth axis of rotation 47 of installing in one side that third filter screen 44 is close to second filter screen 43, the bottom of third axis of rotation 45, fourth axis of rotation 46 and fifth axis of rotation 47 is all installed on second cartridge housing 20, and the top of third axis of rotation 45, fourth axis of rotation 46 and fifth axis of rotation 47 is all worn out the top of second cartridge housing 20. Corresponding to the positions of the third rotating shaft 45, the fourth rotating shaft 46 and the fifth rotating shaft 47 penetrating out of the second filter cartridge housing 20, an angle adjusting box 48 is fixedly installed on the second filter cartridge housing 20, a first gear 49 is installed at one end of the third rotating shaft 45 positioned in the angle adjusting box 48, a second gear 50 is installed at one end of the fourth rotating shaft 46 positioned in the angle adjusting box 48, and a third gear 51 is installed at one end of the fifth rotating shaft 47 positioned in the angle adjusting box 48. A rack 52 is fittingly installed in the angle adjusting box 48, the rack 52 is horizontally arranged, the rack 52 is meshed with the first gear 49, the second gear 50 and the third gear 51, and the first filter screen 42, the second filter screen 43 and the third filter screen 44 can rotate by pulling the rack 52, so as to adjust the contact area of all the filter screens with the airflow in the second filter cartridge housing 20 in real time. Set up the screw hole on the angle adjustment box 48, threaded hole fit installation fixing bolt 53, rotatory fixing bolt 53 can compress tightly fixedly to rack 52, and after the area of contact adjustment of all filter screens and air current finishes, fix fixing bolt 53 to rack 52, can ensure under the influence of air current that each filter screen can not take place the angle change to ensure the normal clear of dust removal operation.

As shown in fig. 10 and 11, all the screens in the third filter screen 22 are in the closed state, that is, the airflow in the second filter cartridge housing 20 is filtered by passing through the third filter screen 22, and the corresponding wind resistance is the largest, so that the dust removing effect is finer. As shown in fig. 12, the rack 52 is pulled to drive the third rotating shaft 45, the fourth rotating shaft 46 and the fifth rotating shaft 47 to rotate, when the first filter screen 42, the second filter screen 43 and the third filter screen 44 are all located at positions perpendicular to the cross section of the second filter cartridge housing 20, the air flow passing capacity is the largest, the corresponding wind resistance is the smallest, and the filter cartridge housing is suitable for dust removal operation when air contains less dust or the requirement on dust removal precision is not high, so that the wind resistance in the second filter cartridge housing 20 is reduced to the lowest, and the power consumption of the motor 4 is also reduced to a certain extent. The length of the angle adjusting box 48 pulled out by the rack 52 sequentially corresponds to different rotation angles of the third filter 22, and the angle of the third filter 22 can be adjusted according to actual dust removal requirements, so that the power consumption of the motor 4 can be reduced to the greatest extent on the premise of effective dust removal.

Technical scheme of the utility model not be restricted to the utility model the within range of embodiment. The technical contents not described in detail in the present invention are all known techniques.

Claims

1. The utility model provides a leading filtering formula wet dedusting fan, includes dryer (1), first leading filtering device, the leading filtering device of second and dehydrator, its characterized in that: the second preposed filtering device is arranged at the front end of the air duct (1), the first preposed filtering device is arranged at the front end of the second preposed filtering device, the dehydrator is arranged at the rear end of the air duct (1), a motor sealing cover (2) is arranged at the middle position in the air duct (1), a connecting plate (3) is fixedly arranged between the periphery of the motor sealing cover (2) and the inner wall of the air duct (1), a motor (4) is arranged in the motor sealing cover (2), a lead of the motor (4) penetrates out of the air duct (1) through the connecting plate (3), an output shaft of the motor (4) penetrates out of the motor sealing cover (2) to be connected with the impeller (5), a first filter screen (6) is fixedly arranged on the inner wall of the air duct (1) at the front side of the impeller (5), an inclined water scraping plate (7) is arranged on each side of blades of the impeller (5), and a first annular water collecting groove (8) is arranged on the inner wall of the air, a second annular water collecting tank (9) is arranged on the inner wall of the rear end of the air duct (1), a first water discharging opening (10) is formed in the bottom of the first annular water collecting tank (8), a second water discharging opening (41) is formed in the bottom of the second annular water collecting tank (9), a first water retaining ring (11) with the diameter smaller than that of the air duct (1) is further arranged inside the second annular water collecting tank (9), the first front-mounted filtering device comprises a first filter drum shell (12), a first sprayer (13) is arranged at the front end inside the first filter drum shell (12), a second filter screen (14) is fixedly arranged on the rear side of the first sprayer (13), a first support (15) is arranged on the inner wall of the first filter drum shell (12) on the rear side of the second filter screen (14) side by side, a first rotating shaft (16) is horizontally arranged on the first support (15), and a first driven impeller (17) is matched and sleeved on the first rotating shaft (16), a third annular water collecting tank (18) is arranged at the air outlet position at the rear end of the first filter cylinder shell (12), the diameter of the inner installation part of the third annular water collecting tank (18) is smaller than that of a second water retaining ring (19) of the first filter cylinder shell (12), the second preposed filtering device comprises a second filter cylinder shell (20), a second sprayer (21) is arranged at the front end of the inner part of the second filter cylinder shell (20), the diameter of water mist sprayed by the second sprayer (21) is smaller than that sprayed by the first sprayer (13), a third filter screen (22) is fixedly arranged at the rear side of the second sprayer (21), wherein the diameter of meshes on the third filter screen (22) is smaller than that of meshes on the second filter screen (14), the diameter of meshes on the first filter screen (6) is smaller than that of meshes on the third filter screen (22), and second supports (23) are arranged side by side on the inner wall of the second filter cylinder shell (20) at the rear side of the third filter screen (22), a second rotating shaft (24) is horizontally arranged on the second support (23), a second driven impeller (25) is sleeved on the second rotating shaft (24) in a matching mode, a fourth annular water collecting tank (26) is arranged at an air outlet position at the rear end of the second filter cylinder shell (20), and a third water retaining ring (27) with the diameter smaller than that of the second filter cylinder shell (20) is arranged inside the fourth annular water collecting tank (26).

2. The pre-filtering wet dust removal fan according to claim 1, wherein: the front end of the first annular water collecting groove (8) corresponds to the position of the middle and rear end parts of the impeller (5), and the rear end of the first annular water collecting groove (8) is positioned behind the impeller (5).

3. The pre-filtering wet dust removal fan according to claim 1, wherein: the air inlet position of the front end of the first filter cartridge shell (12) is in an open bell mouth shape.

4. The pre-filtering wet dust removal fan according to claim 1, wherein: the first sprayer (13) comprises a first water inlet pipe (28) and an annular first spraying pipe (29), the first spraying pipe (29) is matched with the inner wall of the front end of the first filter cylinder shell (12), a plurality of first spraying ports (30) are formed in the first spraying pipe (29), and water mist is sprayed towards the axial line position of the first driven impeller (17) through each first spraying port (30).

5. The pre-filtering wet dust removal fan according to claim 1, wherein: second shower (21) include second inlet tube (31) and second shower (32) of Y type, install booster pump (33) on second inlet tube (31), the periphery of second shower (32) matches with the inner wall that the second strained a section of thick bamboo casing (20) front end, set up a plurality of second on second shower (32) and spray mouth (34), every second sprays mouth (34) and all sprays water smoke towards the axis position department of second driven impeller (25).

6. The pre-filtering wet dust removal fan according to claim 1, wherein: the first water retaining ring (11), the second water retaining ring (19) and the third water retaining ring (27) are all in a straight cylinder shape, the distance between the outer peripheral wall of the first water retaining ring (11) and the inner wall of the air duct (1), the distance between the outer peripheral wall of the second water retaining ring (19) and the inner wall of the first filter cartridge shell (12) and the distance between the outer peripheral wall of the third water retaining ring (27) and the inner wall of the second filter cartridge shell (20) are equal in all places, the second annular water collecting tank (9) is positioned at the rear side position of the first water retaining ring (11), the height of the cylinder wall of the first water retaining ring (11) is greater than the width of the second annular water collecting tank (9), the third annular water collecting tank (18) is positioned at the rear side position of the second water retaining ring (19), the height of the cylinder wall of the second water retaining ring (19) is greater than the width of the third annular water collecting tank (18), and the fourth annular water collecting tank (26) is positioned at the rear side position of the third water, the height of the cylinder wall of the third water retaining ring (27) is larger than the width of the fourth annular water collecting groove (26).

7. The pre-filtering wet dust removal fan according to claim 1, wherein: the dehydrator comprises a first shell (35) fixedly connected with the rear end of the air duct (1), a plurality of folded plates (36) are inserted in the first shell (35) side by side, the folded plates (36) are all arranged in parallel along the length direction of the first shell (35), a bent air duct (37) is formed between every two adjacent folded plates (36), a water baffle (38) is fixedly mounted at the bent position of each folded plate (36), and the opening direction of the water baffle (38) is opposite to the air flow direction in the air duct (37).

8. The pre-filtering wet dust removal fan according to claim 1, wherein: the dehydrator comprises a second shell (39) fixedly connected with the rear end of the air duct (1), a spiral flow plate (40) is arranged on the inner peripheral wall of the second shell (39), and the central axis of the spiral flow plate (40) coincides with the central axis of the second shell (39) in the length direction.

9. The pre-filtering wet dust removal fan according to claim 1, wherein: the wiper blade (7) extends continuously from the blade root to the blade end along the length direction of the blade.

10. The pre-filtering wet dust removal fan according to claim 1, wherein: third filter screen (22) are including first filter screen (42), second filter screen (43) and third filter screen (44), and first filter screen (42) and third filter screen (44) are located the both sides position of second filter screen (43), and first filter screen (42), second filter screen (43) and third filter screen (44) are constituteed and are strained casing (20) internal perisporium matched with circular with the second, one side that first filter screen (42) are close to second filter screen (43) is vertical installs third axis of rotation (45), and the vertical fourth axis of rotation (46) of installing in intermediate position of second filter screen (43), and vertical fifth axis of rotation (47) of installing in one side that third filter screen (44) are close to second filter screen (43), third axis of rotation (45), fourth axis of rotation (46) and the bottom of fifth axis of rotation (47) are all installed on second filter casing (20), and third axis of rotation (45), The top ends of a fourth rotating shaft (46) and a fifth rotating shaft (47) penetrate out of the top of the second filter cylinder shell (20), corresponding to the positions of the third rotating shaft (45), the fourth rotating shaft (46) and the fifth rotating shaft (47) penetrating out of the second filter cylinder shell (20), an angle adjusting box (48) is fixedly mounted on the second filter cylinder shell (20), a first gear (49) is mounted at one end of the third rotating shaft (45) located in the angle adjusting box (48), a second gear (50) is mounted at one end of the fourth rotating shaft (46) located in the angle adjusting box (48), a third gear (51) is mounted at one end of the fifth rotating shaft (47) located in the angle adjusting box (48), a rack (52) is mounted in the angle adjusting box (48) in a matched mode, the rack (52) is horizontally arranged, and the rack (52) is meshed with the first gear (49), the second gear (50) and the third gear (51), pulling rack (52) enables first filter screen (42), second filter screen (43) and third filter screen (44) to take place to rotate, set up the screw hole on angle adjustment box (48), screw hole fit in installation fixing bolt (53), rotatory fixing bolt (53) can compress tightly fixedly rack (52).