CN211058850U

CN211058850U - Cyclone filtering wet dust removal fan

Info

Publication number: CN211058850U
Application number: CN201921658009.6U
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: 2020-07-21
Anticipated expiration: 2029-09-30

Abstract

The utility model provides a whirl filtering wet-type dust exhausting fan, includes dryer, spray thrower and impeller, the spray thrower is located the air intake position of dryer front end, and intermediate position department in the dryer sets up motor seal cover, its characterized in that: fixed mounting connecting plate between the periphery of motor sealed cowling and the dryer inner wall installs the motor in the motor sealed cowling, and the dryer is worn out via the connecting plate to the wire of motor, the output shaft of motor is worn out the motor sealed cowling and is connected with the impeller, and the impeller is located the spray thrower rear side, fixed mounting filter screen on the dryer inner wall between spray thrower and impeller, the utility model discloses the air current that the water scraping plate flowed through every blade is when breaking away from the blade and continuing to flow, therefore can make most liquid drop in the air remain in the refluence groove to improve gas-water separation's effect, first annular water catch bowl is located the rear end position of impeller, and this design can shorten the width of first annular water catch bowl by a wide margin, can effectively reduce whole dust exhausting fan's volume, reduces manufacturing cost.

Description

Cyclone filtering wet dust removal fan

Technical Field

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

Background

In mines or various excavation operations, crushing operation and other sites with serious dust pollution, in order to ensure that the working environment can not generate negative influence on the health of operators, a wet dust removal fan is usually arranged on a construction site, dust is captured by spraying water mist, then water and gas separation is carried out by the centrifugal force of an internal impeller, and then the purpose of dust removal is achieved, but the adsorption effect of the impeller on dust-containing liquid drops is limited, most of the dust-containing liquid drops can not be separated from gas under the centrifugal force of the impeller, so that the dust removal efficiency is reduced, meanwhile, the water mist is sprayed to capture the dust, if the water and gas separation in the fan is insufficient, the humidity of subsequently discharged gas can be very high, the working environment of the operators can be influenced, and troubles of different degrees are brought to the site construction.

Disclosure of Invention

In order to solve the problem, an object of the utility model is to provide a whirl filtering wet dust exhausting fan all is provided with the wiper blade on every blade of the inside impeller of fan, the setting of wiper blade can improve the impeller dusty liquid drop when rotatory to its adhesive force, and then guarantees the aqueous vapor separation degree in the dryer, improves dust collection efficiency, still installs the whirl filter at the dryer rear end, can further dewater the dust removal to dryer exhaust dusty gas, and then guarantee to discharge the gas that is located normal humidity range.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a whirl filtering wet-type dust exhausting fan, includes dryer, spray thrower and impeller, the spray thrower is located the air intake position of dryer front end, and intermediate position department in the dryer sets up motor seal cover, its characterized in that: a connecting plate is fixedly installed between the periphery of a motor sealing cover and the inner wall of an 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, the impeller is positioned at the rear side of a sprayer, a filter screen is fixedly installed on the inner wall of the air duct between the sprayer and the impeller, one side of each blade of the impeller is provided with an inclined water scraping plate, the inner wall of the air duct is provided with a first annular water collecting tank, the inner wall at the rear end of the air duct is provided with a second annular water collecting tank, the bottom of the first annular water collecting tank is provided with a first water discharge port, the bottom of the second annular water collecting tank is provided with a second water discharge port, a water retaining ring with the diameter smaller than the air duct is also installed inside the second annular water collecting tank, a cyclone filter is fixedly installed at the position of an, the inner peripheral wall of the shell is provided with a spiral flow plate, and the central axis of the spiral flow plate is superposed with the central axis of the shell in the length direction;

the front end of the first annular water collecting groove corresponds to the position of the middle rear end part of the impeller, and the rear end of the first annular water collecting groove is positioned behind the impeller; the water scraping plate continuously extends from the root part of the blade to the end part of the blade along the length direction of the blade; the air inlet at the front end of the air duct is in an open bell mouth shape; the sprayer comprises a water inlet pipe and an annular spraying pipe, the spraying pipe is matched with the inner wall of the front end of the air duct, a plurality of spraying openings are formed in the spraying pipe, and each spraying opening sprays water mist towards the central axis position of the impeller; the water retaining ring is in a straight tube shape, the distance between the outer peripheral wall of the water retaining ring and the inner wall of the air duct is equal everywhere, the second annular water collecting groove is located at the rear side of the water retaining ring, and the height of the wall of the water retaining ring is larger than the width of the second annular water collecting groove.

The utility model has the advantages of: a whirl filtering wet dedusting fan, the sprayer of dryer front end can spray water smoke, utilizes the dust granule in the droplet seizure air in the water smoke, later air and the water smoke flow direction impeller that contains dirt, respectively install a wiper blade 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. First annular water catch bowl is located the rear end position of impeller, the wiper plate that the slope set up of deuterogamying plays the guide effect, can directly get rid of the first annular water catch bowl with adnexed most dirty liquid drop on the impeller in, the width of first annular water catch bowl can be shortened greatly to this design, the width that makes first annular water catch bowl is being greater than an impeller width, be less than the within range of the width of two impellers alright effectively collect most liquid drop, thereby can effectively reduce whole dust exhausting fan's volume, and the manufacturing cost is reduced. The inside water retaining ring that sets up of dryer rear end and second annular water catch bowl can further adsorb the separation to the dirt-laden liquid drop in the dryer, and the cyclone filter that the dryer rear end was installed additional can accomplish further separation to the moisture in the dust removal gas that will handle to ensure that the discharge is located the gas of normal humidity within range, avoid producing the influence to staff's operating environment.

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 a schematic three-dimensional view of a swirl plate;

fig. 5 is an enlarged view of a sectional view taken along line B-B in fig. 1.

In the figure, a wind tube 2 sprayer 3, an impeller 4, a motor sealing cover 5, a connecting plate 6, a motor 7, a filter screen 8, a water scraping plate 9, a first annular water collecting tank 10, a second annular water collecting tank 11, a first water discharging port 12, a water retaining ring 13, a shell 14, a rotational flow plate 15, a water inlet pipe 16, a spraying pipe 17, a spraying port 18 and a second water discharging port are arranged in the water inlet pipe 15.

Detailed Description

A whirl filtering wet dedusting fan, as shown in figure 1, including dryer 1, spray thrower 2 and impeller 3. The sprayer 2 is positioned at the air inlet position at the front end of the air duct 1 and used for mixing dust in the air duct 1 and sprayed water mist into dust-containing liquid drops so as to facilitate subsequent adsorption dust removal and gas-water separation operation. The motor sealing cover 4 is arranged at the middle position in the air duct 1, as shown in fig. 2, a hollow connecting plate 5 is fixedly installed between the periphery of the motor sealing cover 4 and the inner wall of the air duct 1, and the number of the connecting plates 5 can be one or more, preferably three or four. The connecting plate 5 fixes the motor sealing cover 4 in the air duct 1. The connection plate 5 may be hollow. A motor 6 is mounted in the motor sealing cover 4. The lead of the motor 6 passes through the air duct 1 through the connecting plate 5. An output shaft of the motor 6 penetrates through the motor sealing cover 4 and is provided with the impeller 3, and the impeller 3 rotates to form airflow to provide power for dust removal of the whole device. The motor sealing cover 4 can protect the motor 6 inside from being affected by water vapor on the premise of not affecting the air speed of the air flow inside the air duct 1, so that the motor sealing cover is prevented from being affected by moisture and the service life of the motor sealing cover is prolonged.

As shown in fig. 1, the impeller 3 is located at the rear side of the sprayer 2, and a filter screen 7 is fixedly installed on the inner wall of the air duct 1 between the sprayer 2 and the impeller 3. Under the drive of the air flow in the air duct 1, the dust-containing liquid drops pass through the filter screen 7 for primary filtration to remove dust particles with larger particle sizes. The filter screen 7 can be formed by cross weaving of fine steel wires and is provided with fine meshes. As shown in fig. 3, an inclined wiper blade 8 is provided on each blade side of the impeller 3, the wiper blade 8 is arranged along the length direction of the blade, and the wiper blade 8 is located at the edge of the air outlet side of the blade. When impeller 3 rotates, the setting of wiper blade 8 can improve the adhesive force of impeller 3 to the dusty liquid drop, borrow centrifugal force with it and get rid of the purpose that becomes gas-water separation on dryer 1 inner wall when living dusty liquid drop in the pocket, if do not set up wiper blade 8, the dusty liquid drop of adnexed on the impeller 3 can separate with impeller 3 in its pivoted, some dusty liquid drop can not get rid of on dryer 1 inner wall, but follow the air current and continue to flow in dryer 1, this dust collection efficiency that will influence integrated device.

Corresponding to the position of tip behind impeller 3, install first annular water catch bowl 9 on the inner wall of dryer 1, install second annular water catch bowl 10 on the inner wall of dryer 1 rear end, first drain 11 has been seted up to the bottom of first annular water catch bowl 9, and second outlet 18 has been seted up to the bottom of second annular water catch bowl 10, compare in patent document CN200810015711.0 collect the bilayer structure of dusty liquid drop, owing to have the impeller 3 of scraping board 8 can throw into first annular water catch bowl 9 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 10 still installs the diameter and is less than water retaining ring 12 of dryer 1, and water retaining ring 12 and the setting of second annular water catch bowl 10 can play further adsorption and separation's effect to the inside dirt-laden liquid drop of dryer 1.

For further dewatering, dedusting and humidity reduction of the gas discharged from the air duct 1, a cyclone filter is fixedly installed at an air outlet at the rear end of the air duct 1, as shown in fig. 4, the cyclone filter comprises a housing 13 fixedly connected with the rear end of the air duct 1, a cyclone plate 14 which is spirally arranged is installed on the inner peripheral wall of the housing 13, the central axis of the cyclone plate 14 coincides with the central axis of the housing 13 in the length direction, no gap is formed in the middle of the cyclone plate 14 when viewed from the end face of the cyclone plate 14, and when the dedusting gas enters the cyclone filter from the air duct 1, the dedusting gas can be completely contacted with the cyclone plate 14 under the guiding effect of the cyclone plate 14 and then discharged out of the cyclone filter, so as to achieve the purpose of further dewatering and humidity reduction.

When using a whirl filtering wet dedusting fan during, at first starting motor 6 drives impeller 3 and rotates, rotatory impeller 3 makes the air current that produces from air intake position to air outlet position direction in the dryer 1 to the gas that will have the dust inhales in the dryer 1. The sprayer 2 always sprays water mist in the dust removal process, when gas with dust passes through the sprayer 2, the dust and the water mist form dust-containing liquid drops, the dust-containing liquid drops firstly pass through the filter screen 7 to be primarily filtered under the action of air flow, the dust-containing liquid drops adsorbed by the filter screen 7 flow into the first annular water collecting groove 9 under the action of gravity and the action of the air flow, most of the dust-containing liquid drops passing through the filter screen 7 are attached to blades of the impeller 3, the rest of the dust-containing liquid drops continuously move in the air duct 1 along with the air flow at the positions around the impeller 3, the dust-containing liquid drops attached to the impeller 3 are gradually accumulated near the water scraping plate 8 along with the rotation of the impeller 3, then the dust-containing liquid drops are thrown into the first annular water collecting groove 9 by centrifugal force under the guiding action of the water scraping plate 8 and the blowing action of the air flow, the dust-containing liquid drops in the first annular water collecting groove 9 enter the first water discharging opening 11 under the action of gravity after being accumulated to a certain degree, the small part of the dust-containing liquid drops which are not attached to the impeller 3 enter between the water retaining ring 12 and the second annular water collecting tank 10 along with the air flow, the air flow flows in a zigzag manner to realize the gas-water separation again, then the air flow is discharged out of the air duct 1 through the inner space of the water retaining ring 12, when the air flow enters and exits between the water retaining ring 12 and the second annular water collecting tank 10, due to the stroke lengthening 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 water retaining ring 12 and the second annular water collecting tank 10, due to the trend of the air flow, the dust-containing liquid drops attached to the outer wall of the water retaining ring 12 are blown into the second annular water collecting tank 10, the dust-containing liquid drops in the second annular water collecting tank 10 finally enter the second water outlet 18 to be discharged under the action of gravity, the water mist sprayed by the sprayer 2 in the whole, thereby achieving the purpose of dust removal. When dust removal gas gets into the whirl filter ware from dryer 1, along the gaseous stroke that can increase in the whirl filter ware of whirl board 14 mobile, and spiral arrangement's whirl board 14 enables inside gaseous centrifugal force, produce the collision with casing 13 internal perisporium, be favorable to whirl board 14 and casing 13 internal perisporium to the absorption of dust removal gas in moisture, further improve the efficiency of aqueous vapor separation, ensure the dry degree of last exhaust gas, avoid humidity too big to produce the influence to staff's operational environment.

Preferably, in order to improve the adsorption capacity of the whole device to dust, the air inlet position at the front end of the air duct 1 is in an open horn mouth shape, so that the contact area between the air inlet position of the air duct 1 and an external space can be increased, and the dust removal efficiency of the device is improved.

Preferably, as shown in fig. 5, the sprayer 2 includes inlet tube 15 and annular shower 16, and the inner wall of shower 16 and dryer 1 front end cooperatees, a plurality of spray opening 17 has been seted up on the shower 16, and every spray opening 17 all sprays the water smoke towards impeller 3's axis position department, and the water smoke that shower 16 spun that the circumference set up can carry out the omnidirectional with the dust and mix, improves the seizure efficiency of water smoke to the dust to improve the dust collection efficiency of integrated device.

Preferably, the water retaining ring 12 is a straight cylinder, the distance between the outer peripheral wall of the water retaining ring 12 and the inner wall of the air duct 1 is equal everywhere, the second annular water collecting groove 10 is located at the rear side of the water retaining ring 12, the height of the cylinder wall of the water retaining ring 12 is greater than the width of the second annular water collecting groove 10, compared with a water retaining cover obliquely arranged in patent document CN201020575594.6, the straight cylinder water retaining ring can reduce the wind resistance in the air duct 1 to a great extent, so as to reduce the consumption of energy, the height of the cylinder wall of the water retaining ring 12 is greater than the width of the second annular water collecting groove 10, so as to further increase the stroke of air flow between the water retaining ring 12 and the second annular water collecting groove 10, and enable dust-containing liquid drops to be attached to the greatest extent, so as to achieve the purposes of air.

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 whirl filtering wet dedusting fan, includes dryer (1), spray thrower (2) and impeller (3), spray thrower (2) are located the air intake position of dryer (1) front end, and intermediate position department in dryer (1) sets up motor seal cover (4), its characterized in that: a connecting plate (5) is fixedly installed between the periphery of a motor sealing cover (4) and the inner wall of an air duct (1), a motor (6) is installed in the motor sealing cover (4), a lead of the motor (6) penetrates out of the air duct (1) through the connecting plate (5), an output shaft of the motor (6) penetrates out of the motor sealing cover (4) and is connected with an impeller (3), the impeller (3) is positioned at the rear side of a sprayer (2), a filter screen (7) is fixedly installed on the inner wall of the air duct (1) between the sprayer (2) and the impeller (3), an inclined water scraping plate (8) is arranged on one side of each blade of the impeller (3), a first annular water collecting groove (9) is formed in the inner wall of the air duct (1), a second annular water collecting groove (10) is installed on the inner wall of the rear end of the air duct (1), a first water discharging opening (11) is formed in the bottom of the first annular water collecting groove (, the bottom of second annular water catch bowl (10) has been seted up second outlet (18), and the inside of second annular water catch bowl (10) is still installed the diameter and is less than water retaining ring (12) of dryer (1), and the air outlet position department fixed mounting whirl filter ware in dryer (1) rear end, whirl filter ware include with dryer (1) rear end fixed connection's casing (13), install spiral setting's whirl board (14) on the internal perisporium of casing (13), the axis of whirl board (14) coincides mutually with casing (13) length direction's axis.

2. The cyclone filtering wet dust removal fan of claim 1, wherein: the front end of the first annular water collecting groove (9) corresponds to the position of the middle and rear end parts of the impeller (3), and the rear end of the first annular water collecting groove (9) is positioned behind the impeller (3).

3. The cyclone filtering wet dust removal fan of claim 1, wherein: the wiper blade (8) extends continuously from the blade root to the blade end along the length direction of the blade.

4. The cyclone filtering wet dust removal fan of claim 1, wherein: the air inlet position of the front end of the air duct (1) is in an open horn mouth shape.

5. The cyclone filtering wet dust removal fan of claim 1, wherein: spray thrower (2) include inlet tube (15) and annular shower (16), and shower (16) cooperate with the inner wall of dryer (1) front end, a plurality of spraying mouth (17) have been seted up on shower (16), and every spraying mouth (17) all sprays water smoke towards the axis position department of impeller (3).

6. The cyclone filtering wet dust removal fan of claim 1, wherein: the water retaining ring (12) is in a straight tube shape, the distance between the outer peripheral wall of the water retaining ring (12) and the inner wall of the air duct (1) is equal everywhere, the second annular water collecting groove (10) is located at the rear side of the water retaining ring (12), and the height of the wall of the water retaining ring (12) is larger than the width of the second annular water collecting groove (10).