CN211051173U

CN211051173U - Driven secondary filtering wet dust removal fan

Info

Publication number: CN211051173U
Application number: CN201921654050.6U
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 driven secondary 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, sets up the motor seal cover in the dryer, and fixed mounting 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 impeller with the water scraping plate can improve the efficiency of whole dust removal, can also effectively reduce the length of whole dryer, reduces the consumption of the energy, and the first manger plate ring and the second annular water catch bowl that the dryer rear end set up can further adsorb the separation to the dirt-laden liquid drop in the dryer to improve the dust collection efficiency of whole device.

Description

Driven secondary 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 driven secondary filtering wet dust exhausting fan.

Background

The wet dust removal fan is a fan which utilizes the dust catching effect of water mist to purify air flow, is widely applied to the fields of mining industry, excavation operation and the like, and has the action mechanism that dust-containing liquid drops attached to blades are thrown onto an air duct by virtue of centrifugal force so as to achieve the purpose of dust removal. Because the existing single impeller has a limited adsorption effect on dust-containing liquid drops in the air, if the adsorption effect on the dust-containing liquid drops is to be improved, the number of the impellers needs to be increased. However, the increase of the number of the impellers inevitably increases wind resistance, improves energy consumption, and increases the volume and the manufacturing cost of the whole machine.

Disclosure of Invention

In order to solve the problem, an object of the utility model is to provide a driven secondary filtering wet dedusting fan, through install the wiper blade on every blade at the impeller, can improve the capture ability of single impeller to the dusty liquid drop by a wide margin to reach the purpose of high-efficient dust removal.

The utility model provides a technical scheme that its technical problem adopted is: a driven secondary filtering wet dust removal fan comprises an air duct, a sprayer and an impeller, wherein the sprayer is positioned at an air inlet at the front end of the air duct, a motor sealing cover is arranged 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 wire 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 the impeller, the impeller is positioned at the rear side of the sprayer, a first filter screen is fixedly installed on the inner wall of the air duct between the sprayer and 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, a second annular water collecting groove is installed on the inner wall at the rear end of the air duct, a first water discharging opening is formed in the bottom of the first annular water, the inside of second annular water catch bowl still installs the first manger plate ring that the diameter is less than the dryer.

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 rear end air outlet position department fixedly connected with secondary filtering section of thick bamboo of dryer, the inside front end installation second filter screen of secondary filtering section of thick bamboo, the mesh diameter on the second filter screen is less than the mesh diameter on the first filter screen, installs the support on the secondary filtering section of thick bamboo inner wall of second filter screen rear side by side, and horizontal installation has the axis of rotation on the support, the driven impeller of cooperation suit in the axis of rotation sets up third annular water catch bowl in the air outlet position department of secondary filtering section of thick bamboo rear end, and the internally mounted diameter of third annular water catch bowl is less than the second retaining ring of a secondary filtering section of thick bamboo. The second water retaining ring is in a straight tube shape, the distance between the outer peripheral wall of the second water retaining ring and the inner wall of the secondary filtering barrel is equal, the third annular water collecting groove is located at the rear side of the second water retaining ring, and the height of the tube wall of the second water retaining ring is larger than the width of the third annular water collecting groove. The air inlet position of dryer front end is open horn mouth form. 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 first water retaining ring is in a straight tube shape, the distance between the outer peripheral wall of the first water retaining ring and the inner wall of the air duct is equal, the second annular water collecting groove is located at the rear side of the first water retaining ring, and the height of the wall of the first water retaining ring is larger than the width of the second annular water collecting groove. The wiper blade extends from the blade root to the blade end continuously along the length direction of the blade.

The utility model has the advantages of: a driven secondary 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 impeller with the water scraping plate can improve the efficiency of whole dust removal, can also effectively reduce the length of whole dryer, reduces the consumption of the energy, and the first manger plate ring and the second annular water catch bowl that the dryer rear end set up can further adsorb the separation to the dirt-laden liquid drop in the dryer to improve the dust collection efficiency of whole device.

Drawings

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

3 FIG. 3 2 3 is 3 an 3 enlarged 3 view 3 of 3 the 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3

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

Fig. 4 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 first 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 first water retaining ring 13, a second filter screen 14, a second filter screen 15, a support 16, a rotating shaft 17, a driven impeller 18, a third annular water collecting tank 19, a second water retaining ring 20, a water inlet tube 21, a spraying tube 22, a spraying port 23 and a second water discharging port are arranged.

Detailed Description

A driven secondary filtering wet dedusting fan, as shown in fig. 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 first 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 first filter screen 7 for preliminary filtration, and dust particles with larger particle size are filtered out. The first filter 7 may be formed by cross-weaving fine steel wires and has 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 23 has all 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 be with it adnexed dusty liquid drop most get rid of in first annular water catch bowl 9, 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 first water retaining ring 12 that the diameter is less than dryer 1, and the setting of first water retaining ring 12 and second annular water catch bowl 10 can play further adsorption and separation's effect to the inside dirt-laden liquid drop of dryer 1.

When using a driven secondary filtering wet dust exhausting fan, at first starting motor 6 drives impeller 3 and rotates, rotatory impeller 3 makes the interior air current that produces from air intake position to air outlet position direction of dryer 1 to the gas that will have the dust is inhaled in 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 first filter screen 7 for preliminary filtering under the action of air flow, the dust-containing liquid drops adsorbed by the first filter screen 7 flow into the first annular water collecting tank 9 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 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 peripheral positions of 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 tank 9 by centrifugal force under the guiding action of the water scraping plate 8 and the blowing of the air flow, and the dust-containing liquid drops in the first annular water collecting tank 9 enter the first water discharging port 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 first 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 air-water separation again, then the air flow is discharged out of the air duct 1 through the inner space of the first water retaining ring 12, when the air flow enters and exits between the first water retaining ring 12 and the second annular water collecting tank 10, the dust-containing liquid drops in the subsequent air flow are mostly attached to the outer wall of the first water retaining ring 12 and the second annular water collecting tank 10 due to the mutual collision of the air flow, the dust-containing liquid drops attached to the outer wall of the first water retaining ring 12 are blown into the second annular water collecting tank 10 due to the trend of the air flow, the dust-containing liquid drops entering the second annular water collecting tank 10 finally enter the second water outlet 23 to be discharged under the action of gravity, and the water mist sprayed by the sprayer 2 in the whole process, and the water-gas separation is realized under the action of the impeller 3 and the first water retaining ring 12, so that the aim of dust removal is fulfilled.

Preferably, in order to further improve the dust removal effect, a secondary filtering barrel 13 is fixedly connected to the rear end air outlet of the air duct 1, a second filter screen 14 is installed at the front end inside the secondary filtering barrel 13, the diameter of a mesh hole on the second filter screen 14 is smaller than that of the first filter screen 7, two supports 15 can be installed side by side on the inner wall of the secondary filtering barrel 13 on the rear side of the second filter screen 14, a rotating shaft 16 is horizontally installed between the two supports 15, a driven impeller 17 is sleeved on the rotating shaft 16 in a matching manner, a third annular water collecting tank 18 is installed at the rear end air outlet of the secondary filtering barrel 13, and the diameter of the inner installation of the third annular water collecting tank 18 is smaller than that of a second water retaining ring 19 of the secondary filtering barrel 13.

Gas exhausted from the air duct 1 enters the secondary filtering barrel 13, the air flow in the secondary filtering barrel 13 drives the driven impeller 17 to rotate, the structural function in the secondary filtering barrel 13 is similar to that of each component in the air duct 1, gas exhausted from the air duct 1 and containing a small amount of dust liquid drops firstly passes through the adsorption filtering of the second filter screen 14, then enters the space between the second water retaining ring 19 and the third annular water collecting groove 18 through the driven impeller 17, and finally the secondary filtering barrel 13 is exhausted from the inside of the second water retaining ring 19, most of the dust liquid drops in the secondary filtering barrel can be attached to the outer walls of the driven impeller 17 and the second water retaining ring 19, and finally enter the third annular water collecting groove 18 under the action of centrifugal force and gravity to be discharged. The secondary filtering cylinder 13 has the effect of further dedusting the gas discharged from the air cylinder 1.

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. 4, the sprayer 2 includes inlet tube 20 and annular shower 21, and the inner wall of shower 21 and dryer 1 front end cooperatees, set up a plurality of spray openings 22 on the shower 21, every spray opening 22 all sprays the water smoke towards impeller 3's axis position department, and the water smoke that shower 21 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 first water retaining ring 12 is a straight cylinder, the distance between the outer peripheral wall of the first water retaining ring 12 and the inner wall of the air duct 1 is equal, the second annular water collecting groove 10 is located at the rear side of the first water retaining ring 12, and the height of the cylinder wall of the first water retaining ring 12 is greater than the groove width of the second annular water collecting groove 10. The second water retaining ring 19 is in a straight tube shape, the distance between the outer peripheral wall of the second water retaining ring 19 and the inner wall of the secondary filtering barrel 13 is equal at all positions, the third annular water collecting groove 18 is located at the rear side of the second water retaining ring 19, and the height of the barrel wall of the second water retaining ring 19 is larger than the width of the third annular water collecting groove 18. Compared with the water retaining cover obliquely arranged in the patent document CN201020575594.6, the straight-tube-shaped water retaining ring can reduce the wind resistance in the air duct 1 to a great extent, further reduce the energy consumption, the height of the tube wall of the water retaining ring is larger than the width of the water collecting groove, the stroke of air flow between the water retaining ring and the water collecting groove can be further increased, dust-containing liquid drops are attached to the greatest extent, and the purposes of gas-water separation and final dust removal are achieved.

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 driven secondary 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, set up motor seal cover (4), its characterized in that in dryer (1): 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 first 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 arranged on 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), and a first water discharging opening (11) is formed in the bottom of the first annular water collecting groove (, a second water outlet (23) is formed in the bottom of the second annular water collecting tank (10), and a first water retaining ring (12) with the diameter smaller than that of the air duct (1) is further installed inside the second annular water collecting tank (10).

2. The driven secondary 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 driven secondary filtering wet dust removal fan of claim 1, wherein: rear end air outlet position department fixedly connected with secondary filtering section of thick bamboo (13) of dryer (1), secondary filtering section of thick bamboo (13) inside front end installation second filter screen (14), mesh diameter on second filter screen (14) is less than the mesh diameter on first filter screen (7), installs support (15) on secondary filtering section of thick bamboo (13) inner wall of second filter screen (14) rear side by side, and horizontal installation has axis of rotation (16) on support (15), cooperation suit driven impeller (17) on axis of rotation (16), sets up third annular water catch bowl (18) in the air outlet position department of secondary filtering section of thick bamboo (13) rear end, and the internally mounted diameter of third annular water catch bowl (18) is less than second water retaining ring (19) of secondary filtering section of thick bamboo (13).

4. The driven secondary filtering wet dust removal fan of claim 3, wherein: the second water retaining ring (19) is in a straight tube shape, the distance between the outer peripheral wall of the second water retaining ring (19) and the inner wall of the secondary filtering barrel (13) is equal, the third annular water collecting groove (18) is located at the rear side of the second water retaining ring (19), and the height of the barrel wall of the second water retaining ring (19) is larger than the width of the third annular water collecting groove (18).

5. The driven secondary 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.

6. The driven secondary filtering wet dust removal fan of claim 1, wherein: spray thrower (2) include inlet tube (20) and annular shower (21), and shower (21) cooperate with the inner wall of dryer (1) front end, set up a plurality of spray openings (22) on shower (21), every spray opening (22) all sprays water smoke towards the axis position department of impeller (3).

7. The driven secondary filtering wet dust removal fan of claim 1, wherein: the first water retaining ring (12) is in a straight tube shape, the distance between the outer peripheral wall of the first 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 first water retaining ring (12), and the height of the tube wall of the first water retaining ring (12) is larger than the width of the second annular water collecting groove (10).

8. The driven secondary 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.