CN113446245B

CN113446245B - Centrifugal ventilator for acid mist waste gas purification tower

Info

Publication number: CN113446245B
Application number: CN202110827621.7A
Authority: CN
Inventors: 徐瑶
Original assignee: Individual
Current assignee: Shandong Woming Biotechnology Co.,Ltd.
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-03-11
Anticipated expiration: 2041-07-21
Also published as: CN113446245A

Abstract

The invention discloses a centrifugal ventilator for an acid mist waste gas purification tower, and relates to the technical field of waste gas purification equipment; the problem that dirt attached to the impeller and the fan shell is difficult to clean is solved; the air conditioner comprises an air inlet base, an exhaust pipe and a driving motor, wherein a lower end cover is installed at the top of the air inlet base, an upper end cover is installed at the bottom of the exhaust pipe, a motor support is installed at the bottom of the driving motor, and a fan shell assembly is installed at the top of the lower end cover. In the invention, when the fan runs, cleaning liquid is periodically introduced into the fan through the cleaning assembly, the cleaning liquid is sprayed on the surface of the turbine fan blade and then thrown out in an umbrella shape, and then impacts the inner wall of the air cavity assembly to complete further cleaning work, and secondly, part of the cleaning liquid enters the inlet of the fan through the pressure balance pipe and the electromagnetic valve and contacts the surface of the turbine fan blade again to complete the overall cleaning work of the outer surface of the turbine fan blade and the inner wall surface of the fan shell assembly.

Description

Centrifugal ventilator for acid mist waste gas purification tower

Technical Field

The invention relates to the technical field of waste gas purification equipment, in particular to a centrifugal fan for an acid mist waste gas purification tower.

Background

In recent years, the control of air pollution is receiving more and more attention from all social circles. Acid mist is one of the most common waste gases, particularly in electroplating, pickling of metal surfaces, and the like. At present, the main methods for controlling the emission of acid mist include electrostatic demisting, mechanical acid mist purification and acid mist purification liquid absorption, and an acid mist purification tower, which is called an acid gas purification tower, an acid mist absorption tower, a waste gas purification tower and a glass fiber reinforced plastic acid mist purification tower, plays a role in removing acidic harmful gases in waste gas.

In the acid waste gas treatment process, waste gas is led out by a fan and then firstly enters an acid mist waste gas purification tower, alkaline washing liquid in an absorption tower is pumped into the tower by a circulating pump and flows downwards through a filler, the acid mist waste gas rises in a countercurrent manner and is in gas-liquid contact with the wet surface of the filler, so that the purification process of the gas is completed, the purified waste gas is dewatered and led out by a centrifugal fan and then is discharged after reaching the standard, and the centrifugal fan is used as gas conveying equipment of the acid mist waste gas purification tower, is in contact with the gas in the acid mist waste gas purification tower during working, and is attached with dirt on the impeller and the fan shell part when the centrifugal fan is operated for a long time, so that the equipment is difficult to clean and even the equipment is corroded.

In view of the above, the present invention provides a centrifugal ventilator for an acid mist exhaust gas purifying tower, so as to solve the technical problems in the prior art.

Disclosure of Invention

Based on the technical problem that dirt attached to the impeller and the fan shell part is difficult to clean in the background technology, the invention provides a centrifugal ventilator for an acid mist waste gas purification tower.

The invention provides a centrifugal ventilator for an acid mist waste gas purification tower, which comprises an air inlet base, an exhaust pipe and a driving motor, wherein a lower end cover is installed at the top of the air inlet base, an upper end cover is installed at the bottom of the exhaust pipe, a motor support is installed at the bottom of the driving motor, a fan shell component is installed at the top of the lower end cover, a dispersing component is installed at the top of the fan shell component, an air cavity component is installed between the dispersing component and the upper end cover, an isolating shell is installed between the dispersing component and the air cavity component, a connecting shaft is rotatably installed at the joint of the isolating shell and the dispersing component, a turbine fan blade is installed at the bottom of the connecting shaft, the connecting shaft is in transmission connection with the driving motor through a transmission belt, and a plurality of pressure balance pipes and electromagnetic valves are installed between the outer side of the air cavity component and the air inlet base, keep apart the internally mounted of casing and wash the subassembly, just it comprises inlet tube and injector head to wash the subassembly, just the leakage fluid dram of injector head is located turbine fan blade upper end, the mid-mounting of exhaust pipe has violently the pipe, just the closing cap is all installed at the both ends of violently managing.

Preferably, the fan shell assembly comprises an annular shell, an air draft cavity matched with the turbine fan blades is arranged inside the annular shell, a cooling flow channel of a C-shaped structure is arranged on the outer side of the annular shell, and a cooling electromagnetic valve communicated with the cooling flow channel is mounted on the side surface of the annular shell.

In the invention, preferably, a plurality of guide grooves are arranged at the top of the air draft cavity, the guide grooves are obliquely arranged, and the direction of the guide grooves is the same as that of the turbine fan blades.

In the present invention, preferably, the dispersing assembly includes a dispersing plate with a conical structure, a plurality of obliquely distributed dispersing holes are formed in a surface of the dispersing plate, and a sealing portion adapted to the isolation housing is formed at a top of the dispersing plate.

Preferably, the air cavity assembly comprises an air cavity barrel, an air cavity chamber is arranged inside the air cavity barrel, a plurality of annular flow channels are arranged on the outer side of the air cavity barrel, a liquid drainage flow channel is arranged between the annular flow channels and the pressure balance pipe, and a plurality of arc-shaped air grooves are arranged between the inner wall of the air cavity chamber and the annular flow channels.

In the invention, preferably, the wind chamber is of a semi-ellipsoidal structure, and the top of the arc wind groove is of an inverted J-shaped structure.

In the present invention, preferably, a plurality of helical auxiliary blades are disposed on the top of the turbine fan blade, and the auxiliary blades are distributed in a tapered manner.

Preferably, the air inlet base comprises a surrounding plate with an annular structure, a guide ring with a triangular section is mounted inside the surrounding plate, a suction flow channel communicated with the pressure balance pipe is arranged on the surface of the guide ring, and an arc-shaped grate plate is mounted on the bottom wall of the guide ring, close to the suction flow channel.

In the invention, preferably, a piston plate is hermetically and slidably mounted inside the transverse pipe, threaded rods are mounted at two ends of the piston plate, an electric thread pair in threaded connection with the threaded rods is mounted on the outer side of the sealing cover, a plurality of trapping rods are mounted on the outer side of the threaded rods, and a plurality of branch-shaped supporting rods are arranged on the outer side of the trapping rods.

Preferably, the top of the transverse pipe is provided with a gas injection pipe, the bottom of the transverse pipe is provided with a sundry removal pipe, and the middles of the gas injection pipe and the sundry removal pipe are provided with sundry removal electromagnetic valves.

Compared with the prior art, the invention provides a centrifugal ventilator for an acid mist waste gas purification tower, which has the following beneficial effects:

during the operation of the centrifugal fan, waste gas is sucked from the bottom and enters the air cavity assembly and is discharged through the exhaust pipe, waste gas is sucked through the turbine fan blades, the operation is stable, the noise is low, the waste gas compressed by the turbine fan blades enters the air cavity assembly and is released, the waste gas dispersedly rises along the inner wall of the air cavity assembly, dirt on the surface of the air cavity assembly can be blown and removed, then, cleaning liquid is periodically introduced into the air cavity assembly through the cleaning assembly during the operation of the fan, the cleaning liquid is sprayed on the surface of the turbine fan blades and is thrown out in an umbrella shape, the cleaning liquid impacts the inner wall of the air cavity assembly to complete further cleaning work, secondly, part of the cleaning liquid enters the inlet of the fan through the pressure balance pipe and the electromagnetic valve and is contacted with the surface of the turbine fan blades again, the overall cleaning work of the outer surface of the turbine fan blades and the inner wall surface of the fan shell assembly is completed, and the generation of the dirt on the surface of the fan is effectively reduced, and the internal parts of the fan are prevented from being corroded, and the service life of the fan is prolonged.

Drawings

FIG. 1 is a schematic structural view of a centrifugal fan for an acid mist waste gas purification tower according to the present invention;

FIG. 2 is a schematic cross-sectional view of a centrifugal fan for an acid mist exhaust gas purifying tower according to the present invention;

FIG. 3 is a schematic structural view of a fan casing assembly of a centrifugal fan for an acid mist exhaust gas purification tower according to the present invention;

FIG. 4 is a schematic structural diagram of a dispersing assembly of a centrifugal fan for an acid mist waste gas purifying tower according to the present invention;

FIG. 5 is a schematic structural view of an air chamber assembly of a centrifugal fan for an acid mist exhaust gas purification tower according to the present invention;

FIG. 6 is a schematic structural view of an auxiliary blade of a centrifugal fan for an acid mist waste gas purification tower according to the present invention;

fig. 7 is a schematic structural view of an air inlet base of a centrifugal fan for an acid mist exhaust gas purification tower according to embodiment 2 of the present invention;

fig. 8 is a schematic sectional view showing a centrifugal fan for an acid mist exhaust gas purifying tower according to embodiment 3 of the present invention;

fig. 9 is a schematic side view of a centrifugal fan for an acid mist exhaust gas purification tower according to embodiment 3 of the present invention.

In the figure: the air inlet device comprises an air inlet base 1, a coaming 101, a suction flow channel 102, a guide ring 103, an arc-shaped grate plate 104, a fan shell component 2, an annular shell 201, an air exhaust cavity 202, a diversion trench 203, a cooling flow channel 204, a cooling electromagnetic valve 205, a lower end cover 3, a dispersion component 4, a dispersion plate 401, a sealing part 402, dispersion holes 403, an air cavity component 5, an air cavity barrel 501, an air cavity chamber 502, an arc-shaped air channel 503, an annular flow channel 504, a liquid drainage flow channel 505, an upper end cover 6, a horizontal pipe 7, an isolation shell 8, a driving motor 9, a motor bracket 10, a cleaning component 11, a pressure balance pipe 12, an exhaust pipe 13, a connecting shaft 14, a turbine fan blade 15, an auxiliary blade 16, an impurity exhaust pipe 17, an electric screw thread pair 18, a threaded rod 19, a piston plate 20, a trapping rod 21 and an air injection pipe 22.

Detailed Description

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1

Referring to fig. 1-6, a centrifugal ventilator for an acid mist waste gas purification tower comprises an air inlet base 1, an exhaust pipe 13 and a driving motor 9, wherein a lower end cover 3 is installed at the top of the air inlet base 1, an upper end cover 6 is installed at the bottom of the exhaust pipe 13, a motor support 10 is installed at the bottom of the driving motor 9, a fan shell component 2 is installed at the top of the lower end cover 3, a dispersing component 4 is installed at the top of the fan shell component 2, an air cavity component 5 is installed between the dispersing component 4 and the upper end cover 6, an isolating shell 8 is installed between the dispersing component 4 and the air cavity component 5, a connecting shaft 14 is rotatably installed at the joint of the isolating shell 8 and the dispersing component 4, a turbine fan blade 15 is installed at the bottom of the connecting shaft 14, the connecting shaft 14 is in transmission connection with the driving motor 9 through a transmission belt, a plurality of pressure balance pipes 12 and electromagnetic valves are installed between the outer side of the air cavity component 5 and the air inlet base 1, the inside of the isolation shell 8 is provided with a cleaning component 11, the cleaning component 11 is composed of a water inlet pipe and an injector head, a liquid outlet of the injector head is positioned at the upper end of a turbine fan blade 15, the middle part of an exhaust pipe 13 is provided with a transverse pipe 7, two ends of the transverse pipe 7 are provided with seal covers, in the operation process of the centrifugal fan, waste gas is sucked from the bottom and enters the air cavity component 5, and is discharged through the exhaust pipe 13, the waste gas is sucked through the turbine fan blade 15, the operation is stable and the noise is low, the waste gas compressed by the turbine fan blade 15 enters the air cavity component 5 and is released and rises dispersedly along the inner wall of the air cavity component 5, dirt on the surface of the air cavity component 5 can be blown and removed, secondly, cleaning liquid is periodically introduced into the inside through the cleaning component 11 when the fan operates, the cleaning liquid is sprayed on the surface of the turbine fan blade 15 and thrown out in an umbrella shape, and impacts the inner wall of the air cavity component 5 to complete further cleaning work, secondly, partial cleaning liquid enters the inlet of the fan through the pressure balance pipe 12 and the electromagnetic valve and contacts the surface of the turbine fan blade 15 again, so that the overall cleaning work of the outer surface of the turbine fan blade 15 and the surface of the inner wall of the fan shell assembly 2 is completed, the generation of dirt on the surface of the fan is effectively reduced, the internal parts of the fan are prevented from being corroded, and the service life of the fan is prolonged.

In the invention, the fan shell component 2 comprises an annular shell 201, an air draft cavity 202 matched with the turbine fan blade 15 is arranged inside the annular shell 201, a cooling flow channel 204 with a C-shaped structure is arranged outside the annular shell 201, and a cooling electromagnetic valve 205 communicated with the cooling flow channel 204 is arranged on the side surface of the annular shell 201.

The top in air draft chamber 202 is provided with a plurality of guiding gutters 203, and guiding gutter 203 is the slope setting, guiding gutter 203 direction is the same with turbine fan blade 15 direction, turbine fan blade 15 carries out a pressure boost with waste gas and carries, when compressed waste gas passes through fan housing subassembly 2 inside, receive the guide of guiding gutter 203, increase the rotatory speed of carrying of waste gas, the conveying efficiency is improved, and when having the washing liquid to enter into, washing liquid fully dispersed under the centrifugal force effect, it throws away to be the heliciform with the contact of guiding gutter 203, the reinforcing is to the cleaning performance of guiding gutter 203 and wind chamber subassembly 5.

Dispersion subassembly 4 includes the dispersion board 401 of toper structure, and the surface of dispersion board 401 is provided with the dispersion hole 403 that a plurality of slants distribute, the top of dispersion board 401 is provided with the sealing 402 with isolation housing 8 looks adaptation, compressed waste gas enters into the inside of wind chamber subassembly 5 through dispersion subassembly 4, dispersion hole 403 is clockwise annular and distributes, when waste gas passes through, dispersion hole 403 carries out water conservancy diversion once more to it, further increase the mobile kinetic energy of waste gas, improve the efficiency of carrying.

In the invention, the wind cavity component 5 comprises a wind cavity cylinder 501, a wind cavity 502 is arranged in the wind cavity cylinder 501, a plurality of annular runners 504 are arranged on the outer side of the wind cavity cylinder 501, a liquid discharge runner 505 is arranged between the annular runner 504 and the pressure balance pipe 12, a plurality of arc-shaped wind grooves 503 are arranged between the inner wall of the wind cavity 502 and the annular runner 504, sucked waste gas enters the wind cavity 502 spirally through the guide of the fan shell component 2 and the dispersion component 4, the air is discharged from the top of the air chamber 502, when the fan is started or the pressure fluctuates, the electromagnetic valve on the pressure balance pipe 12 is opened to circulate the air pressure at the upper end and the lower end of the turbine fan blade 15, so as to maintain the stability of the front-back pressure difference of the turbine fan blade 15, improve the starting speed of the fan, and the vibration of the fan when the fan is started is reduced, and secondly, the response speed of the wind pressure regulation is improved when the fan fluctuates.

Wind cavity 502 is half ellipsoid structure, and the top of arc wind groove 503 is type of falling J structure, when the fan enters into the washing stage, washing liquid striking wind cavity subassembly 5's inside, make it upwards flow along the inner wall under the effect of wind force, accomplish the washing away of dirt, most dirt is along with exhaust emission, inside the partial clear dirt is leading-in to arc wind groove 503, suction to the fan entrance with the help of pressure differential's effect, effectively stir the bits of broken glass by waste gas and turbine fan blade 15, the efficiency of fan automatically cleaning is improved.

In the invention, the top of the turbine fan blade 15 is provided with a plurality of spiral auxiliary blades 16, the auxiliary blades 16 are distributed in a conical shape, when cleaning liquid enters the surface of the turbine fan blade 15, the cleaning liquid is sucked out under the influence of negative pressure of suction, and the cleaning liquid is guided and impacted when flowing through the arrangement of the auxiliary blades 16, so that the cleaning liquid is dispersed in an umbrella curtain shape, the diffusion area of the cleaning liquid can be increased, and the cleaning effect on the inner wall of the fan is further enhanced.

Example 2

Referring to fig. 1-7, an air inlet base 1 includes a shroud 101 with an annular structure, a guide ring 103 with a triangular section is installed inside the shroud 101, a suction flow channel 102 communicated with a pressure balance pipe 12 is arranged on the surface of the guide ring 103, an arc-shaped grate plate 104 is installed on the bottom wall of the guide ring 103 near the suction flow channel 102, when cleaning liquid is sucked into an inlet of a fan, the cleaning liquid is converged to the inlet of the fan under the guide of the guide ring 103 and the entrainment effect of waste gas, dirt particles washed away can be intercepted through the arrangement of the arc-shaped grate plate 104, the cleaning liquid is sucked, the impact and the abrasion on turbine blades 15 are effectively reduced, and the service life of the fan is prolonged.

Example 3

Referring to fig. 1-6 and 8-9, a centrifugal fan for an acid mist waste gas purification tower, a piston plate 20 is hermetically and slidably mounted inside a transverse pipe 7, threaded rods 19 are mounted at two ends of the piston plate 20, an electric screw pair 18 in threaded connection with the threaded rods 19 is mounted on the outer side of a sealing cover, a plurality of collecting rods 21 are mounted on the outer side of the threaded rods 19, a plurality of branch-shaped supporting rods are arranged on the outer side of the collecting rods 21, when waste gas carries dirt and cleaning liquid to be discharged, the dirt is collected through the arrangement of the collecting rods 21, impurities in waste gas discharge are reduced, the electric screw pair 18 drives the threaded rods 19 and the piston plate 20 to swing left and right, and the dirt collecting efficiency is increased through alternate work.

According to the invention, the top of the transverse pipe 7 is provided with the gas injection pipe 22, the bottom of the transverse pipe 7 is provided with the impurity discharge pipe 17, the middles of the gas injection pipe 22 and the impurity discharge pipe 17 are respectively provided with the impurity discharge electromagnetic valve, when the impurity discharge pipe 17 moves to one side and is isolated by the piston plate 20, the gas injection pipe 22 and the impurity discharge electromagnetic valves on the impurity discharge pipe 17 can be opened, discharged waste gas is introduced, the surface of the collecting rod 21 is blown by waste gas at the outlet of the fan, cleaning liquid and dirt on the surface of the collecting rod are blown away to achieve a good cleaning effect, and the cleaning and replacing work is performed alternately, so that the dirt content in the waste gas is further reduced.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides a centrifugal fan for acid mist exhaust purification tower, includes air inlet base (1), exhaust pipe (13) and driving motor (9), lower cover (3) are installed at the top of air inlet base (1), upper end cover (6) are installed to the bottom of exhaust pipe (13), motor support (10) are installed to the bottom of driving motor (9), its characterized in that, fan casing subassembly (2) is installed at the top of lower cover (3), just dispersion subassembly (4) are installed at the top of fan casing subassembly (2), dispersion subassembly (4) with install wind chamber subassembly (5) between upper end cover (6), the one end of keeping apart casing (8) is installed in wind chamber subassembly (5), just keep apart casing (8) with the junction of dispersion subassembly (4) rotates installs connecting axle (14), just turbine fan blade (15) are installed to the bottom of connecting axle (14), connecting axle (14) with connect through drive belt transmission between driving motor (9), the outside of wind chamber subassembly (5) with install a plurality of pressure balance pipe (12) and solenoid valve between air inlet base (1), the internally mounted of keeping apart casing (8) has cleaning assembly (11), just cleaning assembly (11) comprises inlet tube and injector head, just the leakage fluid dram of injector head is located turbine fan blade (15) upper end, the mid-mounting of exhaust pipe (13) has violently to manage (7), just the closing cap is all installed at the both ends of violently managing (7).

2. The centrifugal ventilator for the acid mist exhaust gas purification tower according to claim 1, wherein the fan housing assembly (2) comprises an annular housing (201), an air suction cavity (202) matched with the turbine fan blades (15) is arranged inside the annular housing (201), a cooling flow channel (204) with a C-shaped structure is arranged outside the annular housing (201), and a cooling electromagnetic valve (205) communicated with the cooling flow channel (204) is installed on the side surface of the annular housing (201).

3. The centrifugal ventilator for the acid mist exhaust gas purification tower according to claim 2, wherein a plurality of guide grooves (203) are formed in the top of the air draft chamber (202), the guide grooves (203) are arranged in an inclined manner, and the direction of the guide grooves (203) is the same as that of the turbine blades (15).

4. The centrifugal ventilator for the acid mist exhaust gas purification tower according to claim 3, wherein the dispersion assembly (4) comprises a dispersion plate (401) with a conical structure, a surface of the dispersion plate (401) is provided with a plurality of dispersion holes (403) distributed obliquely, and a top of the dispersion plate (401) is provided with a sealing portion (402) adapted to the isolation housing (8).

5. The centrifugal ventilator for the acid mist waste gas purification tower according to the claim 1, wherein the wind cavity assembly (5) comprises a wind cavity cylinder (501), a wind cavity chamber (502) is arranged inside the wind cavity cylinder (501), a plurality of annular flow channels (504) are arranged outside the wind cavity cylinder (501), a liquid discharge flow channel (505) is arranged between the annular flow channel (504) and the pressure balance pipe (12), and a plurality of arc-shaped wind grooves (503) are arranged between the inner wall of the wind cavity chamber (502) and the annular flow channel (504).

6. The centrifugal ventilator for acid mist exhaust gas purification tower of claim 5, wherein the wind chamber (502) has a semi-ellipsoidal structure, and the top of the arc wind groove (503) has an inverted J-shaped structure.

7. The centrifugal fan for the acid mist exhaust gas purification tower according to claim 1, wherein a plurality of helical auxiliary blades (16) are arranged on the top of the turbine fan blades (15), and the auxiliary blades (16) are distributed in a conical shape.

8. The centrifugal ventilator for the acid mist exhaust gas purification tower according to any one of claims 1-7, wherein the air intake base (1) comprises a surrounding plate (101) with an annular structure, a guide ring (103) with a triangular cross section is installed inside the surrounding plate (101), a suction flow channel (102) communicated with the pressure balance pipe (12) is arranged on the surface of the guide ring (103), and an arc-shaped grate plate (104) is installed at the position, close to the suction flow channel (102), of the bottom wall of the guide ring (103).

9. The centrifugal ventilator for the acid mist exhaust gas purification tower according to any one of claims 1 to 7, wherein a piston plate (20) is hermetically and slidably mounted inside the horizontal tube (7), threaded rods (19) are mounted at both ends of the piston plate (20), an electric screw pair (18) in threaded connection with the threaded rods (19) is mounted on the outer side of the cover, a plurality of trapping rods (21) are mounted on the outer side of the threaded rods (19), and a plurality of dendritic support rods are arranged on the outer side of the trapping rods (21).

10. The centrifugal ventilator for the acid mist waste gas purification tower as claimed in claim 9, wherein a gas injection pipe (22) is installed at the top of the horizontal pipe (7), an impurity discharge pipe (17) is installed at the bottom of the horizontal pipe (7), and impurity discharge electromagnetic valves are installed in the middle of the gas injection pipe (22) and the impurity discharge pipe (17).