CN210356515U

CN210356515U - Series-type cement dust collector

Info

Publication number: CN210356515U
Application number: CN201920979985.5U
Authority: CN
Inventors: 李世华
Original assignee: Zhengzhou Tianrui Cement Co Ltd
Current assignee: Zhengzhou Tianrui Cement Co Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-04-21
Anticipated expiration: 2029-06-26

Abstract

The utility model discloses a serial-type cement dust collector, including primary dust remover and turbofan, the primary dust remover includes the barrel, the bottom of barrel is fixed with the toper end, the top of barrel is provided with the top cap, barrel and toper end enclose into a holding chamber, the bottom of toper end is provided with the ash valve, the top cap is the setting of volute form, and the middle part of top cap up end is provided with the outlet duct, the outlet duct extends to toper end, one side of top cap is provided with the intake pipe, the inlet scoop and the outlet duct of turbofan are linked together, the intercommunication has the secondary dust remover on the air exit of turbofan; the series-connection type cement dust removal device has the advantages of simple and reasonable structure, energy conservation and environmental protection.

Description

Series-type cement dust collector

Technical Field

The utility model relates to a dust collecting equipment technical field, concretely relates to serial-type cement dust collector.

Background

In the cement production process, a large amount of dust is generated during the calcination process regardless of crushing, drying or grinding, and if the dust is not effectively treated, the environment is seriously affected; meanwhile, if the workers in the first line of the cement plant contact and inhale the harmful dust for a long time, the workers can suffer occupational diseases of pneumoconiosis, namely, the fine dust enters the lung of the human body and cannot be discharged out of the body to be left and is caused to cause fibrosis of lung tissues; therefore, people equip corresponding dust removing equipment for cement production enterprises, namely, the dust removing equipment is used for reducing the pollution of dust to the environment during cement production and simultaneously reducing the harm of cement dust to workers and people; the existing dust removing equipment of a cement plant is mainly filter bag type dust removing equipment, a filter bag needs to be replaced periodically when in use, particularly, the filter bag needs to be replaced for several months often under the condition of strong corrosion of flue gas, when the temperature of the flue gas is high, the flue gas needs to be cooled, otherwise, the filter bag is easily burnt out, and the dust removing effect of the filter bag is lost; secondly, the filter resistance of the filter bag type dust removal is also large, and a high-power fan is required, so that the energy consumption of the dust removal equipment is improved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a serial-type cement dust collector of simple structure reasonable, energy-concerving and environment-protective.

In order to solve the above problem, the utility model adopts the following technical scheme:

a series-connection type cement dust removal device comprises a primary dust remover and a turbofan, wherein the primary dust remover comprises a barrel body, a conical bottom is fixed at the bottom of the barrel body, a top cover is arranged at the top of the barrel body, the top cover, the barrel body and the conical bottom are enclosed into an accommodating cavity, an ash discharge valve is arranged at the bottom of the conical bottom, the top cover is arranged in a volute shape, an air outlet pipe is arranged in the middle of the upper end face of the top cover and extends towards the conical bottom, an air inlet pipe is arranged at one side of the top cover, an air suction port of the turbofan is communicated with the air outlet pipe, the turbofan and the primary dust remover are mutually matched to help smoke containing dust to enter the barrel body through the volute-shaped top cover in a cutting-in mode and form rotary motion, and due to the limitation of the barrel body and the top cover, air flow forms an external rotational flow, most of dust in the smoke is thrown to the cylinder wall due to inertia force to lose energy, slides down along the wall, falls into the conical bottom, and is discharged by the ash discharge valve. The outer swirling air flow which rotates and descends is drawn close to the center of the dust collector along with the contraction of the cone at the conical part, the rotating air flow begins to ascend near the radius range of the exhaust pipe to form an inner swirling flow from bottom to top, which is also called as a core flow (belonging to forced vortex) and is finally discharged through the exhaust pipe, and the air outlet of the turbofan is communicated with a secondary dust collector.

Preferably, the secondary dust remover comprises a box body, an air inlet and an air outlet, a spray header is arranged at the top in the box body, a water storage tank is arranged at the bottom in the box body, a water pump is further arranged at the outer side of the bottom of the box body, a water inlet pipe of the water pump is communicated with the water storage tank, a water outlet pipe of the water pump is communicated with the spray header, more than one spray header is arranged, the spray headers are transversely and uniformly arranged, water mist sprayed out of the spray headers is helpful for being mixed with dust particles in flue gas and forming adsorption, a water curtain component for enabling water of the spray headers to form a water curtain is further arranged below the spray headers in the box body, the water curtain component is fixedly connected with the box body, the air inlet is arranged between the spray header and the water curtain component on one side of the box body, the air outlet is arranged between the water storage tank and the water curtain component on, the water curtain type secondary dust remover is helpful for removing tiny dust of flue gas.

As preferred, the water curtain subassembly includes first guide plate and second guide plate, first guide plate and second guide plate are fixed respectively in the both sides of box, first guide plate and second guide plate are crisscross setting each other, and first guide plate and second guide plate all slope the setting downwards, help making shower nozzle spun water form the water curtain on first guide plate and second guide plate respectively under the effect of gravity to adsorb the dust particulate matter in the flue gas that passes through.

Preferably, the water curtain assemblies are more than one and are sequentially and longitudinally arranged in the box body at equal intervals, so that a plurality of water curtain assemblies are arranged to achieve a further dust removal effect.

Preferably, the bottom of the water storage tank is also provided with a drain valve, and the drain valve is communicated with the tank body, so that the drainage of the sewage with dust adsorbed is facilitated and the sewage is treated.

Drawings

FIG. 1 is a schematic structural view of a tandem type cement dust removing device of the present invention;

fig. 2 is a top view of the top cover of the serial type cement dust removing device of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings, so as to make the technical solution of the present invention easier to understand and master.

In the present embodiment, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; in addition, in the present embodiment, if the connection or fixing manner between the components is not specifically described, the connection or fixing manner may be a bolt fixing manner, a pin fixing manner, or a pin shaft connecting manner, which is commonly used in the prior art, and therefore, detailed description thereof is omitted in this embodiment.

As shown in fig. 1-2, a tandem type cement dust removing device comprises a primary dust remover 1 and a turbine fan 2, wherein the turbine fan 2 is B4-72-11, the primary dust remover 1 comprises a cylinder 11, a conical bottom 12 for collecting dust is fixed at the bottom of the cylinder 11 by welding, a top cover 13 is arranged at the top of the cylinder 11, the top cover 13 and the cylinder 11 are fixed by welding, the top cover 13, the cylinder 11 and the conical bottom 12 enclose an accommodating cavity, an ash discharge valve 14 is arranged at the bottom of the conical bottom 12, the ash discharge valve 14 and the conical bottom 12 are fixed by bolts, the top cover 13 is arranged in a volute shape, an air outlet pipe 15 is arranged in the middle of the upper end surface of the top cover 13, the air outlet pipe 15 is empty of the top cover 13 and extends towards the conical bottom 12, the air outlet pipe 15 and the top cover 15 are fixed by welding, an air inlet pipe 16 is arranged at one side of the top cover 13, the air inlet pipe 16 and the top cover 13 are fixed through welding, the air suction opening of the turbo fan 2 is communicated with the air outlet pipe 15 through the guide pipe 3, and the air outlet of the turbo fan 2 is communicated with the secondary dust remover 4. The secondary dust remover 4 comprises a box body 41, an air inlet 42 and an air outlet 43, a spray header 44 is arranged at the top in the box body 41, a water storage pool 5 is arranged at the bottom in the box body 41, a water pump 6 is further arranged at the outer side of the bottom of the box body 41, the water pump 6 is fixed with the box body 41 through bolts, a water inlet pipe of the water pump 6 is communicated with the water storage pool 5, a water outlet pipe of the water pump 6 is communicated with the spray header 44, the spray header 44 is provided with more than one spray header 44, the spray headers 44 are transversely and uniformly arranged, water mist sprayed by the spray headers 44 is helpful to be mixed with dust particles in flue gas and form adsorption, a water curtain component 7 for enabling water of the spray headers 44 to form a water curtain is further arranged below the spray header 44 in the box body 41, the water curtain component 7 is fixedly connected with the box body 41, the air inlet 42 is arranged between the spray header 44 and the, the air outlet 43 is positioned between the water storage tank 5 and the water curtain component 7 on the other side of the box body 41, the liquid level of the water storage tank 5 is lower than the height of the air outlet 43, and the water curtain type secondary dust remover 4 is helpful for removing the tiny dust of the smoke. The water curtain subassembly 7 includes first guide plate 71 and second guide plate 72, first guide plate 71 and second guide plate 72 are respectively through welded fastening in the both sides of box 41, first guide plate 71 and second guide plate 72 are crisscross setting each other, and first guide plate 71 and second guide plate 72 all slope the setting downwards, help making shower head 44 shower nozzle spun water form the water curtain on first guide plate 71 and second guide plate 72 respectively under the effect of gravity to dust particle in the flue gas that passes through adsorbs. The water curtain assemblies 7 are arranged in the box body 41 at equal intervals in sequence, so that the dust removal effect is further improved by arranging the water curtain assemblies 7. The bottom of the water storage tank 5 is also provided with a blow-down valve 8, the blow-down valve 8 is communicated with the tank body 41 and is fixed through bolts, and the discharge of sewage with dust adsorbed is facilitated and the sewage is treated.

The working principle is as follows:

the turbine fan 2 and the primary dust remover 1 cooperate with each other to help the flue gas containing dust to enter the cylinder 11 through the volute-shaped top cover 13 in a cutting-in mode and form a rotary motion, due to the limitation of the cylinder 11 and the top cover 13, the air flow forms an external rotational flow (which belongs to quasi-free vortex) from top to bottom in the process, and the dust with larger particle size in the flue gas in the rotary process is mostly thrown to the cylinder wall by the inertia force to lose energy and slide down along the wall, falls into the conical bottom 12 and is finally discharged by the ash discharge valve 14. The outer swirling air flow which rotates and descends is drawn close to the center of the dust collector along with the contraction of the cone at the conical part, the swirling air flow enters the exhaust pipe in the vicinity of the radius range and starts to ascend to form an inner swirling flow from bottom to top, also called as a core flow (belonging to a forced vortex), the flue gas containing dust with smaller particle size is finally exhausted through the exhaust pipe 15 and enters the secondary dust collector 4 through the turbo fan 2, because the spray header 44 is arranged above the air inlet 42 and the water curtain component 7 which is arranged below the air inlet 42 and is matched with the air inlet 42, when the flue gas enters the box body, the water mist sprayed by the spray header 44 is mixed with the flue gas and forms adsorption on the dust in the flue gas, namely, the preliminary adsorption of the dust with small particle size in the flue gas is completed, the sprayed water mist falls onto the guide plates of the water curtain component 7 under the action of gravity and forms a water curtain, because the water curtain component 7 is respectively provided with a first guide plate 71 and a second, therefore, the formed water curtain flows between the first guide plate 71 and the second guide plate 72 in an S-shaped route under the action of gravity, so as to increase the area of the water curtain, meanwhile, the water curtain can further adsorb dust in the flue gas, and finally the flue gas is discharged from the gas outlet 43 of the box body 41.

The utility model has the advantages that: because the primary dust remover, the secondary dust remover and the turbine fan matched with the primary dust remover and the secondary dust remover are arranged, the primary dust remover separates large dust in dust-containing smoke gas by using the action of centrifugal force and gravity; the two-stage dust remover adsorbs and separates tiny particle material dust in the flue gas under the mutual cooperation of water mist and water curtain, and the two-stage dust remover does not have moving parts for the inside of the filter bag type dust remover, and can bear the flue gas of high temperature, so its maintenance is convenient, simultaneously because the circulation rate of hindering of a two-stage dust remover to the flue gas is less for a turbo fan can drive a two-stage dust remover respectively, thereby has reduced the consumption of dust collector to the electric energy.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention.

Claims

1. The utility model provides a serial-type cement dust collector, includes one-level dust remover and turbofan, its characterized in that: the one-level dust remover includes the barrel the bottom of barrel is fixed with at the bottom of the toper, the top of barrel is provided with the top cap, enclose into an holding chamber at the bottom of top cap, barrel and the toper, the bottom at the bottom of toper is provided with the ash valve, the top cap is the volute form setting, and the middle part of top cap up end is provided with the outlet duct, the outlet duct extends to toper end department, one side of top cap is provided with the intake pipe, turbofan's inlet scoop is linked together with the outlet duct, the intercommunication has the second grade dust remover on turbofan's the air exit.

2. The tandem type cement dust removing device according to claim 1, wherein: the second grade dust remover includes box, air inlet and gas outlet, top in the box is provided with the shower head, bottom in the box is the tank, the outside of bottom half still is provided with the water pump, the inlet tube and the tank of water pump are linked together, the outlet pipe and the shower head of water pump are linked together, the below that is located the shower head in the box still is provided with the water curtain subassembly that is used for making the water of shower head form the water curtain, water curtain subassembly and box fixed connection, the air inlet is located between the shower head and the water curtain subassembly of box one side, the gas outlet is located between the tank and the water curtain subassembly of box opposite side, the liquid level of tank is less than the height of gas outlet.

3. The tandem type cement dust removing device according to claim 2, wherein: the water curtain subassembly includes first guide plate and second guide plate, first guide plate and second guide plate are fixed respectively in the both sides of box, first guide plate and second guide plate are crisscross setting each other, and first guide plate and second guide plate all slope the setting downwards.

4. The tandem type cement dust removing device according to claim 3, wherein: the water curtain component is provided with more than one and is sequentially arranged in the box body at a longitudinal equal distance.

5. The tandem type cement dust removing device according to claim 2, wherein: the spray headers are arranged in a transverse and uniform manner.

6. The tandem type cement dust removing device according to claim 2, wherein: the bottom of the water storage tank is also provided with a blow-down valve which is communicated with the box body.