Water film dust remover of biomass steam generator

Abstract

The water film dust remover comprises an outer shell, the top of the outer shell is fixedly connected with a smoke inlet pipe extending into the outer shell, the inner wall of the outer shell is respectively provided with a spraying mechanism and an electric field generating mechanism, the lower surface of the outer shell is provided with a first water drainage pipe, and the upper surface of the outer shell is provided with a second water drainage pipe. A water collecting cover is fixedly connected to the outer surface of the smoke inlet pipe, a plurality of water leakage holes are formed in the bottom of the annular groove, a pull column is fixedly connected to the lower surface of the water collecting cover, and a water containing vessel is fixedly connected to the lower end of the pull column. Water sprayed by a spraying mechanism can be collected through an annular groove, the water flows down from water leakage holes to form a circle of water curtain, so that first-time flue gas dust removal is achieved, the water curtain falls down and collides with water in a water containing vessel, secondary dust removal can be conducted on flue gas through water mist, and in the flue gas rising process, the water curtain is prevented from falling down and colliding with the water in the water containing vessel. And the spraying mechanism is used for spraying the flue gas, so that the situation that the discharged flue gas does not reach the standard and pollutes the environment is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of dust collectors, in particular to a water film dust collector for a biomass steam generator. Background Art

[0002] Biomass steam generator is a mechanical device that uses the thermal energy of fuel or other energy sources to heat water into hot water or steam. Biomass fuel steam generator uses agricultural and forestry waste as raw materials, solving the problem of air pollution caused by the burning of waste such as straw in the agricultural production process.

[0003] Through searching, it is found that CN210979895U discloses a dust removal mechanism for a biomass steam generator, including a dust removal mechanism housing, a spray system, a corona wire, a dust collecting plate, an insulating electric control box, and a high-voltage DC power supply. The dust removal mechanism housing is connected to a smoke inlet at the top, and the dust removal mechanism housing is internally installed with a spray system, a corona wire, and a dust collecting plate. The spray system is arranged at the top of the dust removal mechanism housing, and the dust removal mechanism housing is connected to an insulating electric control box, which is connected to a high-voltage DC power supply. The dust removal mechanism housing is connected to a wastewater outlet at the bottom, and the dust removal mechanism housing is connected to a smoke outlet on the side below. The utility model can effectively filter the smoke generated by the biomass steam generator, thereby discharging clean smoke, avoiding environmental pollution, and ensuring the health of workers.

[0004] However, there are still some problems and shortcomings in the use process:

[0005] The flue gas enters from the flue gas inlet and is then sprayed by the spray system. This method is a simple spraying of the flue gas, and the dust removal efficiency in the flue gas is low, which makes it easy for the exhausted flue gas to fail to meet the standards, thereby polluting the ring, so it needs to be improved. Utility Model Content

[0006] The utility model aims to provide a water film dust collector for a biomass steam generator to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water film dust collector for a biomass steam generator, comprising an external shell, the top of the external shell is fixedly connected with a smoke inlet pipe extending to the interior of the external shell, the inner wall of the external shell is respectively provided with a spray mechanism and an electric field generating mechanism, the lower surface of the external shell is provided with a first drain pipe, the side of the external shell is provided with a smoke exhaust pipe, the outer surface of the smoke inlet pipe is fixedly connected with a water collecting hood, the upper surface of the water collecting hood is provided with an annular groove, the bottom of the annular groove is provided with a plurality of water leakage holes, the lower surface of the water collecting hood is fixedly connected with a pull column, and the lower end of the pull column is fixedly connected with a water dish.

[0008] Preferably, the water leakage holes are arranged in a circular array at the bottom of the annular groove.

[0009] Preferably, the distance from the bottom of the water collecting cover to the upper surface of the water container is 10 cm to 15 cm.

[0010] Preferably, there are two spray mechanisms, which are symmetrically arranged on the inner wall of the external shell. The spray mechanism includes a water pipeline and an atomizing nozzle. There are multiple atomizing nozzles, which are equidistantly arranged on the surface of the water pipeline.

[0011] Preferably, the electric field generating mechanism includes a high-voltage DC power supply and an electrode plate, the electrode plate is fixedly connected to the inner wall of the external shell around, the high-voltage DC power supply is arranged outside the external shell, and the electrode plate is electrically connected to the high-voltage DC power supply.

[0012] Preferably, a second drain pipe is provided on the lower surface of the water container, and both the first drain pipe and the second drain pipe are provided with solenoid valves.

[0013] Preferably, a semicircular cover plate is hinged on the surface of the smoke exhaust pipe, and a slot is provided on the inner wall of the semicircular cover plate and the smoke exhaust pipe, and a filter screen is movably installed in the slot, and threaded holes are provided on the surface of the semicircular cover plate and the smoke exhaust pipe, and fixing bolts are installed in the threaded holes. Beneficial Effects

[0014] The utility model provides a water film dust collector for a biomass steam generator, which has the following beneficial effects:

[0015] 1. The water film dust collector of the biomass steam generator is provided with a spray mechanism, a water collecting cover, an annular groove, a water leakage hole, a pulling column and a water-filled dish. The annular groove can be used to collect the water sprayed by the spray mechanism. The water flows down from the water leakage hole to form a circle of water curtain. After the flue gas is discharged from the smoke inlet pipe, it will first contact with the water curtain, thereby realizing the first flue gas dust removal. The water flowing down from the water leakage hole will be collected by the water-filled dish. The falling water curtain collides with the water in the water-filled dish to generate water mist. The water mist can be used to perform secondary dust removal on the flue gas. In the process of the flue gas rising, the spray mechanism is used to spray the flue gas, so that the flue gas can be dusted again. The dust removal efficiency in the flue gas is high, and the situation that the discharged flue gas does not meet the standard and pollutes the environment is effectively avoided.

[0016] 2. The water film dust collector of the biomass steam generator is provided with a semicircular cover plate, a slot, a filter screen plate and fixing bolts. The filter screen plate can filter the exhaust flue gas, further avoiding the pollution of the flue gas to the environment. The fixing bolts can be removed and the semicircular cover plate can be rotated, which provides convenience for the installation and removal of the filter screen plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front cross-section structure of a water film dust collector for a biomass steam generator proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the overall three-dimensional structure of a water film dust collector for a biomass steam generator proposed by the utility model;

[0019] Figure 3 A schematic diagram of the internal structure of an outer shell of a water film dust collector of a biomass steam generator proposed in the utility model;

[0020] Figure 4 The utility model provides a water film dust collector for a biomass steam generator Figure 2 A is a schematic diagram of the enlarged structure.

[0021] In the figure: 1. external shell; 2. smoke inlet pipe; 3. spray mechanism; 4. electric field generating mechanism; 5. first drain pipe; 6. smoke exhaust pipe; 7. water collecting cover; 8. annular groove; 9. water leakage hole; 10. pull column; 11. water container; 12. high voltage DC power supply; 13. electrode plate; 14. second drain pipe; 15. semicircular cover plate; 16. slot; 17. filter screen; 18. fixing bolts. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4The utility model provides a technical solution: a water film dust collector for a biomass steam generator, comprising an external shell 1, a smoke inlet pipe 2 extending into the interior of the external shell 1 is fixedly connected to the top of the external shell 1, a spray mechanism 3 and an electric field generating mechanism 4 are respectively arranged on the inner wall of the external shell 1, a first drain pipe 5 is arranged on the lower surface of the external shell 1, a smoke exhaust pipe 6 is arranged on the side of the external shell 1, a water collecting cover 7 is fixedly connected to the outer surface of the smoke inlet pipe 2, an annular groove 8 is arranged on the upper surface of the water collecting cover 7, a plurality of water leakage holes 9 are opened at the bottom of the annular groove 8, a pull column 10 is fixedly connected to the lower surface of the water collecting cover 7, a water filling dish 11 is fixedly connected to the lower end of the pull column 10, the water leakage holes 9 are arranged in an annular array at the bottom of the annular groove 8, the distance from the bottom of the water collecting cover 7 to the upper surface of the water filling dish 11 is 10 cm to 15 cm, there are two spray mechanisms 3, and they are symmetrically arranged on the external shell 1 inner wall, the spray mechanism 3 includes a water delivery pipe and an atomizing nozzle. The number of the atomizing nozzles is multiple and they are equidistantly arranged on the surface of the water delivery pipe. By arranging the spray mechanism 3, the water collecting cover 7, the annular groove 8, the water leakage hole 9, the pulling column 10 and the water-filling dish 11, the annular groove 8 can be used to collect the water sprayed by the spray mechanism 3. The water flows down from the water leakage hole 9 to form a circle of water curtain. After the flue gas is discharged from the smoke inlet pipe 2, it will first contact with the water curtain, so as to realize the first flue gas dust removal, and the water flowing down from the water leakage hole 9 will be collected by the water-filling dish 11. The water curtain falls and collides with the water in the water-filling dish 11 to generate water mist. The water mist can be used to perform secondary dust removal on the flue gas. In the process of the flue gas rising, the spray mechanism 3 is used to spray the flue gas, so that the flue gas can be dusted again. The dust removal efficiency in the flue gas is high, and the situation that the discharged flue gas does not meet the standards and pollutes the environment is effectively avoided.

[0024] The electric field generating mechanism 4 includes a high-voltage DC power supply 12 and an electrode plate 13. The electrode plate 13 is fixedly connected to the inner wall of the outer shell 1. The high-voltage DC power supply 12 is arranged outside the outer shell 1, and the electrode plate 13 is electrically connected to the high-voltage DC power supply 12. By arranging the high-voltage DC power supply 12 and the electrode plate 13, a high-voltage electric field can be generated inside the outer shell 1. Under the action of the high-voltage electric field, water droplets in the flue gas will be ionized to generate charged ions. These charged ions will be driven by the electric field force to move to the electrode of opposite charge, so that they are captured by the electrode plate 13, so that the impurities in the water droplets are also adsorbed by the electrode plate 13, so as to achieve the purpose of dust removal.

[0025] A second drain pipe 14 is provided on the lower surface of the water-filling dish 11, and solenoid valves are provided on the first drain pipe 5 and the second drain pipe 14. By providing the second drain pipe 14 and the solenoid valve, the water in the water-filling dish 11 can be easily drained, and by providing the first drain pipe 5 and the solenoid valve, the sewage at the bottom of the external shell 1 can be easily discharged.

[0026] A semicircular cover plate 15 is hinged on the surface of the smoke exhaust pipe 6, and a slot 16 is provided on the inner wall of the semicircular cover plate 15 and the smoke exhaust pipe 6, and a filter screen plate 17 is movably installed in the slot 16, and threaded holes are provided on the surfaces of the semicircular cover plate 15 and the smoke exhaust pipe 6, and fixing bolts 18 are installed in the threaded holes. By arranging the semicircular cover plate 15, the slot 16, the filter screen plate 17 and the fixing bolts 18, the filter screen plate 17 can be used to filter the exhausted smoke, further avoiding the pollution of the smoke to the environment, and by removing the fixing bolts 18 and rotating the semicircular cover plate 15, it is convenient for the installation and removal of the filter screen plate 17.

[0027] Working principle: When the water film dust collector of the biomass steam generator is in use, the spray mechanism 3 is first started. When the water dish 11 is filled with water, the flue gas generated by the biomass steam generator is introduced into the smoke inlet pipe 2. At this time, the annular groove 8 can be used to collect the water sprayed by the spray mechanism 3. The water flows down from the water leakage hole 9 to form a circle of water curtain, similar to a water film. After the flue gas is discharged from the smoke inlet pipe 2, it will first come into contact with the water curtain, thereby realizing the first flue gas dust removal, and the water flowing down from the water leakage hole 9 will be filled with water dish 11. The water curtain falls and collides with the water in the water dish 11, which will produce water mist. The water mist can be used to remove dust from the flue gas for the second time. When the flue gas rises, the spray mechanism 3 is used to spray the flue gas, which can remove dust from the flue gas again. The electric field generating mechanism 4 is used to adsorb water droplets in the flue gas, and finally the filter mesh plate 17 is used to filter the flue gas. Throughout the whole process, the dust removal efficiency in the flue gas is high, which effectively avoids the situation where the discharged flue gas does not meet the standards and pollutes the environment, thereby improving the practicality.

[0028] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0029] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A water film dust collector for a biomass steam generator, comprising an outer shell (1), characterized in that: The top of the external shell (1) is fixedly connected to a smoke inlet pipe (2) extending into the interior of the external shell (1); the inner wall of the external shell (1) is respectively provided with a spray mechanism (3) and an electric field generating mechanism (4); the lower surface of the external shell (1) is provided with a first drain pipe (5); the side of the external shell (1) is provided with a smoke exhaust pipe (6); the outer surface of the smoke inlet pipe (2) is fixedly connected to a water collecting cover (7); the upper surface of the water collecting cover (7) is provided with an annular groove (8); the bottom of the annular groove (8) is provided with a plurality of water leakage holes (9); the lower surface of the water collecting cover (7) is fixedly connected to a pull column (10); the lower end of the pull column (10) is fixedly connected to a water container (11).

2. The water film dust collector of a biomass steam generator according to claim 1, characterized in that: The water leakage holes (9) are arranged in a circular shape and arranged in a row at the bottom of the annular groove (8).

3. The water film dust collector of a biomass steam generator according to claim 2, characterized in that: The distance between the bottom of the water collecting cover (7) and the upper surface of the water container (11) is 10 cm to 15 cm.

4. The water film dust collector of a biomass steam generator according to claim 1, characterized in that: There are two spray mechanisms (3) disposed symmetrically on the inner wall of the outer shell (1). The spray mechanism (3) comprises a water delivery pipeline and an atomizing nozzle. There are multiple atomizing nozzles disposed equidistantly on the surface of the water delivery pipeline.

5. The water film dust collector of a biomass steam generator according to claim 1, characterized in that: The electric field generating mechanism (4) comprises a high-voltage DC power supply (12) and an electrode plate (13), wherein the electrode plate (13) is fixedly connected to the inner wall of the outer shell (1) on all sides, the high-voltage DC power supply (12) is arranged outside the outer shell (1), and the electrode plate (13) is electrically connected to the high-voltage DC power supply (12).

6. The water film dust collector of a biomass steam generator according to claim 1, characterized in that: A second drain pipe (14) is provided on the lower surface of the water container (11), and solenoid valves are provided on both the first drain pipe (5) and the second drain pipe (14).

7. The water film dust collector of a biomass steam generator according to claim 1, characterized in that: A semicircular cover plate (15) is hingedly connected to the surface of the smoke exhaust pipe (6), and a slot (16) is provided on the inner wall of the semicircular cover plate (15) and the smoke exhaust pipe (6), a filter screen (17) is movably installed in the slot (16), and threaded holes are provided on the surfaces of the semicircular cover plate (15) and the smoke exhaust pipe (6), and fixing bolts (18) are installed in the threaded holes.

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