CN104923022B - High-efficiency, energy-saving and environment-friendly dedusting pipeline - Google Patents

Abstract

The invention discloses a high-efficiency, energy-saving and environment-friendly dust removal device, which comprises a smoke inlet pipe which can be connected with a smoke pipe of a boiler, and a dust collector is connected to the end of the smoke inlet pipe; a spray device is installed in the smoke inlet pipe; The dust collector includes a dust collector housing. The end of the smoke inlet pipe is arranged tangentially to the dust collector housing and connected to the upper part of the dust collector housing. The inner wall of the dust collector housing is equipped with a The extended spiral dust sheet, the bottom of the dust collector housing is equipped with a sewage pipe, and the top is equipped with a smoke exhaust pipe. The top is equipped with a frequency conversion fan. The invention has the advantages of making full use of fuel heat energy, good effect of dust removal and desulfurization, and no pollution of flue gas removal.

Description

High-efficiency energy-saving and environmental protection dust removal device

technical field

The invention relates to a high-efficiency, energy-saving and environment-friendly dust removal device.

Background technique

The tobacco curing room needs to be fed with hot air to increase its internal temperature, and the internal temperature can be controlled according to the temperature of the incoming hot air and the amount of hot air, so as to ensure the curing quality of the tobacco leaves. The existing equipment for introducing hot air is a boiler. Because of the need to control the amount of hot air introduced, the combustion of fuel in the boiler may sometimes be insufficient, resulting in smoke exhaust that is not up to standard, resulting in dense smoke billowing, and this This situation is difficult to deal with with the current dust removal and desulfurization equipment, the cost of renovating the boiler is greatly increased, and the effect of flue-cured tobacco is not ideal.

Contents of the invention

The technical problem to be solved by the present invention is to control the combustion of fuel and then the temperature of the hot air through the amount of induced air volume, and is an efficient, energy-saving and environment-friendly dust removal device that can remove dust and desulfurize efficiently.

In order to solve the above technical problems, a high-efficiency energy-saving and environment-friendly dust removal device with the following structure is provided, which includes a smoke inlet pipe that can be connected to the smoke pipe of the boiler, and its structural features are: a dust collector is connected to the end of the smoke inlet pipe; The smoke inlet pipe is equipped with a spray device; the dust collector includes a dust collector housing, and the end of the smoke inlet pipe is arranged tangentially to the dust collector housing and connected to the upper part of the dust collector housing. The inner wall of the body is equipped with a spiral dust sheet that protrudes into the inner cavity and extends downward. The bottom of the dust collector housing is equipped with a sewage pipe and the top is equipped with a smoke exhaust pipe. The smoke exhaust pipe extends into the dust collector housing and extends The position of the inlet end is much lower than the outlet of the smoke inlet pipe; the top of the smoke exhaust pipe is equipped with a frequency conversion fan.

The spraying device comprises a plurality of nozzles connected with the water outlet pipe of the water pump, and the plurality of nozzles are located in the inner chamber of the smoke inlet pipe and arranged at intervals along the length direction of the smoke inlet pipe.

The spraying device comprises a spraying pipe which is connected with the water outlet pipe of the water pump and is located in the inner chamber of the smoke inlet pipe. The spraying pipe is equipped with a spray head or has a spray hole.

The smoke exhaust pipe is equipped with a labyrinth-type dust-falling device. The labyrinth-type dust-falling device includes a plurality of shielding dust removal plates connected in the smoke exhaust pipe. The plurality of shielding dust removal plates are respectively arranged on both sides and the outer ends are respectively attached to the opposite inner surfaces of the smoke exhaust pipe. On the top, the facing protruding ends of a plurality of shielding and dust removal plates are arranged in a staggered manner.

The shielding dust-removing plate is arranged inwardly and downwardly from its outer end.

The smoke exhaust pipe is equipped with a spray dust removal device. The spray dust removal device includes a spray dust removal pipe which is arranged on the smoke exhaust pipe and connected with the water supply device. The spray dust removal pipe is connected with a A plurality of sprinkler heads and a plurality of sprinkler heads are evenly distributed around; or the spray dust removal device includes a spray dust removal pipe connected in the smoke exhaust pipe and connected to the water supply device, and spray holes or nozzles are arranged on the spray dust removal pipe.

The lower part of the dust collector housing is equipped with a drainage pipe, the drainage pipe extends into the dust collector housing and the inner end is equipped with a filter screen cover, the inner extension end of the drainage pipe is lower than the lower extension end of the smoke exhaust pipe, the said The water inlet pipe of the water pump is connected with the drain pipe.

At least two water level gauges arranged vertically at intervals are installed on the shell of the dust collector, and the inner extension end of the top water level gauge is not higher than the lower extension end of the exhaust pipe and not lower than the inner extension end of the drain pipe , the water level gauge at the bottom is not higher than the inner extension end of the drain pipe.

One side of the dust collector is provided with a water supply barrel, and the water inlet pipe of the water pump extends into the water supply barrel, and the water supply barrel is connected with the inner cavity of the dust collector housing through a pipeline or connected with a water source through a pipeline.

The smoke outlet pipe of the frequency conversion fan is connected with a desulfurization and dust collector.

The desulfurization and dust collector includes a desulfurization and dust removal cylinder with a closed top. The end of the exhaust pipe is connected to the lower part of the desulfurization and dust removal cylinder. There is water inside, the bottom of the smoke outlet pipe is open and immersed in water, the space between the outer wall of the smoke outlet pipe and the inner wall of the desulfurization and dust removal tube is the dust removal and desulfurization chamber, the inner cavity of the smoke outlet pipe is the dust removal and smoke exhaust chamber, and the outlet pipe is equipped with The upper part of the smoke inlet pipe, the desulfurization and dedusting cylinder is equipped with a plurality of spray heads located above the inlet of the smoke exhaust pipe.

The smoke exhaust pipe enters along the tangential direction of the desulfurization and dust removal cylinder and communicates with the dust removal and desulfurization chamber. The upper smoke inlet pipe is installed on the upper part of the smoke outlet pipe and is arranged along the tangential direction.

An annular spray ring pipe is connected to the desulfurization and dust removal cylinder, and the plurality of spray heads are respectively connected to the spray ring pipe and uniformly distributed along the spray ring pipe.

After adopting the above structure, the smoke inlet pipe is connected with the smoke exhaust pipe of the boiler, and the smoke output of the smoke pipe is controlled by the frequency conversion fan. Fully, the exhausted flue gas tangentially enters the dust collector shell to form a vortex, the exhausted flue gas is sprayed by the nozzle in the inlet pipe to cool down and perform preliminary dust removal, and the smoke in the flue gas will fall along the above-mentioned spiral dust sheet , falls into the sewage pipe, after the flue gas is fully dust-fallen, it enters the smoke exhaust pipe through the extension end of the smoke exhaust pipe, and then enters the desulfurization dust collector through the labyrinth dust collection device for secondary dust removal, and the flue gas entering the desulfurization dust collector passes through The spray dust removal and desulfurization of the sprinkler head and the natural dust fall after it runs upwards, so as to achieve complete dust removal, and the exhausted flue gas has a low temperature and will not pollute the environment.

To sum up, the present invention has the advantages of making full use of fuel heat energy, good effect of dust removal and desulfurization, and no pollution of flue gas removal.

Description of drawings

Below in conjunction with accompanying drawing, the present invention will be further described:

Fig. 1 is a structural representation of an embodiment of the present invention;

Fig. 2 is a schematic structural view taken along line A-A in Fig. 1;

Fig. 3 is the structural representation along the B-B line sectional view among Fig. 1;

Fig. 4 is the structural representation along the C-C line sectional view among Fig. 1;

Fig. 5 is a schematic structural view taken along line D-D in Fig. 1;

Fig. 6 is a schematic structural view of a dust collector in another embodiment of the present invention.

detailed description

As shown in Figure 1, what provided in the figure is an embodiment of a high-efficiency, energy-saving and environmental protection dust removal device, which includes a smoke inlet pipe 11 that can be connected with the smoke pipe of the boiler, and a spraying device is housed on the smoke inlet pipe 11. The device includes a plurality of nozzles 12 connected to the water outlet pipe of the water pump 10 with the ejection end facing upwards. The plurality of nozzles 12 are located in the inner cavity of the smoke inlet pipe 11 and arranged at intervals along the length direction of the smoke inlet pipe 11. In this embodiment Among them, the bottom of the smoke inlet pipe 11 is provided with a distribution pipe with both ends closed, and the above-mentioned multiple nozzles are connected to the distribution pipe at intervals. The above-mentioned nozzles 12 can be provided with three, four or even more according to actual needs. The water outlet pipe of the water pump 10 can be divided into a plurality of branches through the distribution valve, and each branch extends into the smoke inlet pipe 11 and is connected to the above-mentioned spray head 12 at the end, of course, the spray end of the above-mentioned spray head can also be set downwards, The advantage of setting the ejection end of the nozzle upwards is that it can more effectively drop dust and cool down, that is, when spraying upwards, the water will drop dust to cool down, and when the water drops fall, the dust will drop further to cool down; the end of the smoke inlet pipe 11 is connected to the dust collector 2, and the dust collector 2 The smoke outlet part is connected with a frequency conversion fan 1, and the frequency conversion fan 1 is connected with a desulfurization and dust collector 3 through a smoke exhaust pipe.

As shown in Figure 1, Figure 2 and Figure 3, the dust collector 2 includes a dust collector housing 21, the end of the smoke inlet pipe 11 is arranged tangentially to the dust collector housing 21 and connected to the upper part of the dust collector housing 21, in order to prevent The water stream sprayed by the above-mentioned nozzles can be refluxed, and the smoke inlet pipe 11 can be arranged obliquely, that is, it can be arranged backward and upward from the position where it is connected to the dust collector housing 21. This inclination is not shown in the figure, and the inner wall of the dust collector housing 21 There is a spiral dust-falling piece 22 protruding into its inner cavity and extending downwards. After the flue gas enters the inner cavity of the dust collector housing 21 tangentially from the smoke inlet pipe 11, the flue gas forms a whirlwind vortex, and the smoke in the flue gas will follow. The spiral falling dust sheet 22 falls freely. The bottom of the dust collector housing 21 is equipped with a sewage pipe 23 and the top is equipped with a smoke exhaust pipe 24. The outlet of the pipe 11, the setting of this position can make the flue gas be discharged after sufficient cyclone dust falling, and the labyrinth dust falling device is installed in the smoke exhaust pipe 24; The labyrinth dust falling device includes a plurality of shielding dust removal plates 25 connected in the smoke exhaust pipe 24. The plurality of shield dust removal plates 25 are respectively arranged on both sides and the outer ends are respectively attached to the relative inner surfaces of the smoke exhaust pipe 24. The opposite protruding ends of the dust removal plates 25 are arranged in a staggered manner, and the above-mentioned multiple block dust removal plates 25 staggered on both sides form a labyrinth for the flue gas to pass through, and the area of the dust removal plates 25 is larger than the internal cross-sectional area of the above-mentioned smoke exhaust pipe 24. In half, the shielding dust removal plate 25 is set inwardly and downwardly from its outer end, which can realize natural dust fall and prevent smoke and dust from accumulating on the shielding dust removal plate 25, thereby avoiding causing blockage, and can effectively prevent water mist from running upwards. After the dust removal plate 25 is blocked, it will condense to form water droplets and fall along the dust removal plate. The dust collector housing 21 includes a cylindrical upper part of the dust removal cylinder 211 and an upper part of the dust removal cylinder 212 that gradually expands from bottom to top. It can make the smoke and dust fall naturally.

As shown in Fig. 1, Fig. 2 and Fig. 3, the bottom of above-mentioned precipitator housing 21 is equipped with drain pipe 29, and drain pipe 29 stretches in the dust collector housing 21 and filter screen cover 15 is housed at the inner end, and drain pipe 29 The inner extension end of the exhaust pipe 24 is lower than the lower extension end of the exhaust pipe 24, the water inlet pipe of the water pump is connected with the drain pipe 29, and at least two water level gauges 14 arranged vertically at intervals are installed on the dust collector housing 21, and the water level at the top The extended end of gauge 14 is not higher than the lower extended end of the exhaust pipe 24 and not lower than the inner extended end of the drain pipe 29, and the water level gauge 14 at the bottom is not higher than the inner extended end of the drain pipe 29. After the nozzle located in the smoke inlet pipe 11 sprays the water flow, the water flow enters the dust collector housing 21 with the flue gas, and the setting of the water level gauge 14 on the top can prevent the excessive water flow in the dust collector housing 21 from blocking the smoke exhaust The pipe 24, the water level gauge 14 set at the bottom and the drain pipe 29 can ensure that the water pump can draw water. At the same time, the sewage pipe 23 is equipped with an electric valve. The electric valve and the above-mentioned water level gauge are all controlled by the controller. The water in the body 21 is suitable, that is, the water level therein can neither submerge the lower extension end of the above-mentioned smoke exhaust pipe 24, nor can it ensure that the inner extension end of the drain pipe 29 is in the current. Certainly above-mentioned two water level gauges 14 also can adopt connected type water level gauges, promptly two water level gauges 14 are equipped with connecting pipes, determine the water level in the above-mentioned dust catcher shell by observing the water level in the connecting pipes, guarantee not to submerge the exhaust pipe and guarantee The water pump can draw water.

As shown in Figures 1, 4 and 5, the desulfurization and dust collector 3 includes a desulfurization and dust removal cylinder 31 with a closed top, and the end of the smoke exhaust pipe 24 is connected to the bottom of the desulfurization and dust removal cylinder 31, and the desulfurization and dust removal cylinder 31 is equipped with The smoke outlet pipe 32 extending from its top to its inner cavity, the desulfurization and dust removal cylinder 31 is equipped with water, the bottom of the smoke outlet pipe 32 is open and immersed in water to form a liquid seal, the outer wall of the smoke outlet pipe 32 and the inner wall of the desulfurization and dust removal cylinder 31 The space between is the dedusting and desulfurization chamber 321, the inner chamber of the smoke outlet pipe 32 is the dust removal and smoke exhaust chamber 322, and the smoke exhaust pipe 24 enters along the tangential direction of the desulfurization and dedusting cylinder 31 and communicates with the dust removal and desulfurization chamber 321, and the smoke outlet pipe 32 An upper smoke inlet pipe 33 is installed on the top, and the desulfurization and dust removal cylinder 31 is equipped with a plurality of nozzles 35 located above the inlet of the smoke exhaust pipe 24. The upper smoke inlet pipe 33 is installed on the upper part of the smoke outlet pipe 32 and arranged along its tangential direction. The bottom of the desulfurization and dedusting cylinder 31 is provided with a sewage discharge pipe 36. The advantage of the tangential arrangement of the above two places is that it can form a whirlwind after the flue gas enters, further dedusting and desulfurizing. The desulfurization and dust removal cylinder 31 consists of a cylindrical lower section 311 and an upper section 312 of the cylinder that gradually expands from bottom to top. The upper smoke inlet pipe 33 is located in the upper section 312 of the cylinder. A spray ring pipe 37, a plurality of nozzles 35 are respectively connected to the spray ring pipe 37 and evenly distributed along it, this arrangement will make the spray more uniform and enhance the effect of dust removal and desulfurization.

Fig. 6 is a schematic structural view of the dust collector 2 in another embodiment of the present invention, its basic structure is the same as that of the above embodiment, the difference is that the spray device arranged in the smoke inlet pipe 11 is different, and the spray device includes the same The outlet pipe of the water pump 10 is connected to the spray pipe 13 located in the inner chamber of the smoke inlet pipe. The shower pipe 13 is equipped with a shower head or is provided with a spray hole. The spray pipe 13 is located at the bottom of the smoke inlet pipe inner cavity. The spray end is set upwards. In addition, a water supply bucket 16 is provided on one side of the dust collector 2. The water inlet pipe of the water pump 10 extends into the water supply bucket. The water source is connected, and the water supply bucket can be connected to the water source through the water supply pipe. The advantage of the water supply bucket 16 communicating with the inner cavity of the dust collector housing through the pipeline is that the water can be circulated and water resources can be saved. In this embodiment, the smoke exhaust pipe 24 No labyrinth dust-falling device is provided, and a spray dust removal device is installed on the smoke exhaust pipe 24. The spray dust removal device includes a spray dust removal pipe 6 which is arranged on the smoke exhaust pipe and connected to the water supply device. The water supply device can be the The water pump 10 of the water pump, that is, the outlet pipe of the water pump is connected with the spray dust removal pipe through a branch. This advantage can make the water circulate and achieve the purpose of saving water resources. The water pump not only supplies water for the spray pipe of the smoke inlet pipe 11, but also provides The spray dust removal pipe 6 supplies water, and the two branches of the water supply can be provided with valves respectively, and the water spray can be controlled by the valve and the water pump. Of course, the water supply device can also be provided with a separate water pump. A plurality of spray heads 7 in the inner cavity of the pipe and a plurality of spray heads 7 are evenly distributed around, thereby further spraying dust removal and cooling during the rising process of the flue gas, or the spray dust removal device is connected in the smoke exhaust pipe and connected with the water supply The spray dust removal pipe 6 connected to the device, the spray dust removal pipe 6 is provided with spray holes or nozzles, for example, the spray dust removal pipe 6 is horizontally or obliquely arranged in the smoke exhaust pipe, so as to perform spray dust removal. As for the dedusting device, each device in this embodiment can be used in combination with the devices in the above embodiments, and they are not listed here.

Taking the above-mentioned first embodiment as an example, when the present invention is used, the smoke pipe of the boiler enters the dust collector 2 through the smoke inlet pipe 11 under the smoking action of the frequency conversion fan 1, and passes through the spray dust removal and cooling in the smoke inlet pipe 11. 1. After the cyclone dust removal in the dust collector housing and the labyrinth dust removal of the dust removal plate 25 blocked by the smoke exhaust pipe 24, the desulfurization dust collector 3 is connected through the smoke exhaust pipe 24, and then the dust removal and spray dust removal are desulfurized, so that the flue gas is more purified. , that is to say, the flue gas has undergone comprehensive dust removal with different structures for many times, so that the flue gas discharge will not pollute the environment, and the smoking effect of the frequency conversion fan 1 will make the flue gas more smoothly discharged, and a large amount of oxygen-enriched air will quickly enter the boiler , so as to improve the utilization rate of fuel, make the fuel burn more fully, and realize the purpose of energy saving. The control device can also control the air suction volume of the frequency conversion fan, so as to control the combustion of the boiler, that is, to realize the temperature control of the boiler.

The above is the specific structural form of the present invention, and the present invention is not limited by the above-mentioned embodiments. For those skilled in the art, equivalent changes and parts replacement based on the specific structure of the present invention are all within the protection scope of the present invention.

Claims (10)

1. A high-efficiency, energy-saving and environment-friendly dust removal device, comprising a smoke inlet pipe (11) that can be connected to the smoke pipe of the boiler, characterized in that: the end of the smoke inlet pipe (11) is connected with a dust collector (2); The smoke inlet pipe (11) is equipped with a spray device; The dust collector (2) includes a dust collector housing (21), the end of the smoke inlet pipe (11) is arranged tangentially to the dust collector housing (21) and connected to the upper part of the dust collector housing (21), The inner wall of the dust collector housing (21) is equipped with a spiral dust sheet (22) that protrudes into the inner cavity and extends spirally downwards. The bottom of the dust collector housing (21) is equipped with a sewage pipe (23), and the top A smoke exhaust pipe (24) is installed, and the smoke exhaust pipe (24) extends into the dust collector housing (21) and the position of the extending end is far lower than the outlet of the smoke inlet pipe (11); The top of the exhaust pipe (24) is equipped with a frequency conversion fan (1); The smoke exhaust pipe (24) is equipped with a labyrinth dust removal device, which includes a plurality of shielding dust removal plates (25) connected in the smoke exhaust pipe (24), and the plurality of shielding dust removal boards (25) are respectively provided with two The sides and outer ends are respectively attached to the opposite inner surfaces of the smoke exhaust pipe (24), and the opposite protruding ends of a plurality of shielding dust removal plates (25) are arranged alternately, and the shielding dust removal plates (25) are inward from their outer ends tilt down setting; The flue outlet pipe of the frequency conversion fan (1) is connected with a desulfurization and dust collector (3). 2. The high-efficiency, energy-saving and environment-friendly dust removal device according to claim 1, characterized in that: the spray device includes a plurality of nozzles (12) connected to the outlet pipe of the water pump (10), and the plurality of nozzles (12) are located at the inlet The inner chamber of the smoke pipe is arranged at intervals along the length direction of the smoke inlet pipe (11). 3. The high-efficiency, energy-saving and environment-friendly dust removal device according to claim 1, characterized in that: the spray device includes a spray pipe (13) connected to the outlet pipe of the water pump (10) and located in the inner cavity of the smoke inlet pipe, spraying Shower nozzle (13) is equipped with or is provided with spray hole. 4. The high-efficiency, energy-saving and environment-friendly dust removal device according to claim 1, characterized in that: said smoke exhaust pipe (24) is equipped with a spray dust removal device, and the spray dust removal device includes a ring arranged on the smoke exhaust pipe and connected with a water supply device The connected spray dust removal pipe (6), the spray dust removal pipe (6) is connected with a plurality of spray heads (7) extending into the inner cavity of the smoke exhaust pipe, and the plurality of spray heads (7) are evenly distributed or the spray dust removal device includes a spray dust removal pipe (6) connected in the smoke exhaust pipe and connected to the water supply device, and spray holes or nozzles are arranged on the spray dust removal pipe (6). 5. The high-efficiency, energy-saving and environment-friendly dust removal device according to claim 1, characterized in that: the lower part of the dust collector housing (21) is equipped with a drain pipe (29), and the drain pipe (29) extends into the dust collector housing ( 21) There is a filter screen cover (15) inside and at the inner end, the inner extending end of the drain pipe (29) is lower than the lower extending end of the smoke exhaust pipe (24), and the water inlet pipe of the water pump is connected to the drain pipe (29) . 6. The high-efficiency, energy-saving and environment-friendly dust removal device according to claim 1, characterized in that: a water supply bucket (16) is provided on one side of the dust collector (2), and the water inlet pipe of the water pump (10) extends into the water supply bucket for supplying The water bucket communicates with the inner chamber of the dust collector housing through the pipeline or connects with the water source through the pipeline. 7. The high-efficiency, energy-saving and environment-friendly dust removal device according to claim 5, characterized in that: the dust collector housing (21) is equipped with at least two water level gauges (14) arranged vertically at intervals, and the water level gauge on the top- The inner extension end of the exhaust pipe (24) is not higher than the lower extension end of the drain pipe (29) and the water level gauge at the bottom is not higher than the inner extension end of the drain pipe (29). Stretch end. 8. The high-efficiency, energy-saving and environment-friendly dust removal device according to any one of claims 1-7, characterized in that: the desulfurization and dust collector (3) includes a desulfurization and dust removal cylinder (31) with a closed top, and the smoke exhaust pipe The end of (24) is connected to the lower part of the desulfurization and dust removal cylinder (31). The desulfurization and dust removal cylinder (31) is equipped with a smoke outlet pipe (32) extending from its top down to its inner cavity. The desulfurization and dust removal cylinder (31) is equipped with Water, the bottom of the smoke outlet pipe (32) is open and immersed in water, the space between the outer wall of the smoke outlet pipe (32) and the inner wall of the desulfurization and dust removal cylinder (31) is the dust removal and desulfurization chamber (321), and the space between the outlet pipe (32) The inner cavity is a dust removal and exhaust chamber (322), and the upper smoke inlet pipe (33) is installed on the smoke outlet pipe (32), and a plurality of air inlet pipes (33) located above the inlet of the smoke exhaust pipe (24) are installed on the desulfurization and dust removal cylinder (31). sprinkler head (35). 9. The high-efficiency, energy-saving and environment-friendly dust removal device according to claim 8, characterized in that: the exhaust pipe (24) enters along the tangential direction of the desulfurization and dust removal cylinder (31) and communicates with the dust removal and desulfurization chamber (321), the The upper smoke inlet pipe (33) is installed on the upper part of the smoke outlet pipe (32) and arranged along its tangential direction. 10. The high-efficiency, energy-saving and environment-friendly dust removal device according to claim 8, characterized in that: the desulfurization and dust removal cylinder (31) is connected with a ring-shaped spray ring pipe (37), and the plurality of spray heads (35) They are respectively connected on the spray ring pipe (37) and evenly distributed along it.