CN214635027U - Wet dust collector of venturi structure - Google Patents

Abstract

The utility model belongs to the technical field of wet dust removal device, in particular to a wet dust removal device with a Venturi structure, which comprises a washing tower, wherein a plug installed on the side surface of the washing tower is communicated with an air nozzle through a silicone tube, a through hole for installing a Venturi tube is arranged on a filter tank fixedly connected with the inner wall of the washing tower, a gland net and a rubber plate are covered on the top of active carbon contained in the filter tank, the bottom end of the filter tank is connected with one end of a return pipe through an elbow flange and a reducing flange, a steel wire filter screen is clamped between the filter tank and the elbow flange, the bottom end of the return pipe is communicated with the top surface of a slurry tank, a floating ball liquid level switch is arranged on the inner wall of the slurry tank, an acousto-optic device and a water pump are arranged on the top of the slurry tank, the water pump supplies liquid to the slurry nozzle through a water inlet pipe, a water outlet pipe and a liquid supply pipe, the active carbon filters oil and dust on the slurry, the water change frequency is greatly reduced, the labor intensity of workers is reduced, the compressed air sprayed by the air spray head can further improve the fluid speed in the venturi tube and improve the dust removal effect.

Description

Wet dust collector of venturi structure

Technical Field

The utility model belongs to the technical field of wet dust collector, concretely relates to wet dust collector of venturi structure.

Background

In chemical industry, oil refining and power generation industries at home and abroad, a large amount of flue gas emission can be generated during the production and operation of various devices. Although the flue gas discharged by various industries and devices is different, the flue gas contains a large amount of sulfide, nitrogen oxide and particulate matters (dust), and if the flue gas is directly discharged into the atmosphere, the flue gas can cause great harm to the environment and human bodies. Therefore, the flue gas needs to be washed and purified before being discharged into the atmosphere.

More than 70 percent of the flue gas desulfurization treatment facilities of domestic refining and chemical enterprises adopt a wet treatment process, namely 30 percent of NaOH solution is in contact reaction with the flue gas to absorb oxysulfide and dust in the flue gas. With the increasing national environmental protection emission standard, the requirements for controlling the pollutant emission index of industrial waste gas become stricter, and the existing wet flue gas desulfurization treatment facilities can not meet the requirements for the emission index any more. Aiming at the discharged flue gas of the refining enterprise, oil phase impurities and fine dust (the diameter is less than 3um) contained in the flue gas can be adsorbed in the circulating slurry, so that the dust removal effect of the circulating slurry is reduced, and the throat part of a Venturi tube is blocked, therefore, a technical scheme for modification is urgently needed, the oil phase impurities and the fine dust contained in the circulating slurry are modified on the basis of the existing desulfurization treatment facility, and the treatment efficiency of the flue gas is improved.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a wet dust collector of venturi structure, active carbon carry out the oil strain to the thick liquid and strain dirt, greatly reduced trades the water frequency, reduces workman intensity of labour, and air shower nozzle spun compressed air can further improve the fluid speed in the venturi, improves dust removal effect.

In order to achieve the above object, the utility model provides a following technical scheme: a wet dust removal device with a Venturi structure comprises a washing tower, wherein a quick-connection plug is fixedly mounted on the side surface of the washing tower, one end of the quick-connection plug is connected with an air nozzle through a silicone tube, the air nozzle is fixedly mounted on the inner wall of the washing tower through a fixing plate, the inner wall of the washing tower below the air nozzle is fixedly connected with the top end of a filter tank, a through hole matched with and provided with a Venturi tube is formed in the filter tank, active carbon is contained in the filter tank, a gland net covers the top of the active carbon, a rubber plate is sleeved on the outer side of the Venturi tube above the gland net, the bottom end of the filter tank is fixedly connected with one end of a return pipe through an elbow flange and a reducing flange, a steel wire filter screen is clamped between the filter tank and the elbow flange, the bottom end of the return pipe penetrates through the top surface of a slurry tank, and a floating ball liquid level switch is mounted on the inner wall of the slurry tank, the slurry tank is characterized in that an acousto-optic alarm and a water pump are fixedly mounted at the top of the slurry tank, the water inlet end of the water pump is communicated with the bottom side of the slurry tank through a water inlet pipe, the water outlet end of the water pump is communicated with the side face of a liquid supply pipe through a water outlet pipe, and a slurry spray head is fixedly mounted at the top of the liquid supply pipe.

Preferably, the number of the venturi tubes is multiple, the venturi tubes are annularly and orderly welded and installed on the inner side of a through hole formed in the filter tank, and the ends, not lower than the top end, of the venturi tubes are located at the top end of the filter tank; through a plurality of venturi tubes of inside transformation installation at the scrubbing tower, improve the washing effect to smog, need not to increase the equipment height of scrubbing tower, reduced the transformation cost.

Preferably, the activated carbon is granular activated carbon, the filter tank is in a conical tube structure with a wide upper part and a narrow lower part, and the top side of the filter tank is welded and connected with the inner wall of the washing tower; the slurry sprayed from the top end of the Venturi tube can be collected along the inner wall of the filter tank in a sliding manner, the slurry is filtered by the activated carbon to remove oil and dust, and then the slurry is discharged for recycling, so that the water changing frequency is greatly reduced, and the labor intensity of workers is reduced.

Preferably, the steel wire filter screen is a steel wire mesh structure with the mesh aperture not larger than the minimum individual diameter of the activated carbon; the steel wire filter screen can prevent the active carbon from entering the elbow flange under the action of gravity.

Preferably, the gland net is a steel wire mesh structure with the mesh aperture not larger than the minimum individual diameter of the activated carbon, and slotted holes with the diameter not smaller than the maximum diameter of the venturi tube are annularly and orderly formed in the gland net; the cover pressing net can prevent the active carbon contained in the filter tank from flying and moving under the disturbance of air flow, thereby influencing the filtering effect of the active carbon.

Preferably, the rubber plate is of an annular rubber pad structure, the outer diameter of the rubber plate is not smaller than the diameter of a slotted hole formed in the gland net, the inner diameter of the rubber plate is the same as the diameter of a throat of the Venturi tube, and a cross groove is formed in the rubber plate; the elasticity and the flexibility of the rubber plate can enable the rubber plate to close and cover the gap between the slotted hole of the gland net and the side surface of the Venturi tube, and the active carbon is prevented from escaping from the gap.

Preferably, the number of the fixing plates is the same as that of the venturi tubes, the fixing plates are arranged along the circumferential direction of the inner wall of the washing tower, and one end of the quick-connection plug is connected with an air compressor/compressed air pipeline; the air nozzle can spray compressed air flowing at high speed, the pressure intensity at the outlet of the Venturi tube is reduced by increasing the air flow rate, the fluid speed in the Venturi tube is further increased, and the dust removal effect is improved.

Preferably, the acousto-optic alarm is electrically connected with the floating ball liquid level switch; when the dust greasy dirt of filtration isolation excessively causes the thick liquid can't follow elbow flange, back flow entering thick liquid pond cell-phone in the thick liquid pond on the active carbon, the thick liquid siltation under the continuous transport of water pump in the thick liquid pond is in the filter-tank, causes the decline of thick liquid level height in the thick liquid pond, when liquid level height dropped to float liquid level switch's the volume of opening and shutting, the acousto-optic alarm sent out the police dispatch newspaper, reminds operating personnel in time to shut down and change the active carbon, realizes automatic monitoring.

Preferably, the liquid supply pipe is of an annular pipe structure, the number of the slurry spray heads is the same as that of the venturi pipes, and the axis of each slurry spray head is coincident with the axis of one venturi pipe; the feed pipe can supply liquid for a plurality of thick liquid shower nozzles simultaneously, can not hinder simultaneously that operating personnel from pulling down the elbow flange and change the active carbon.

Compared with the prior art, the beneficial effects of the utility model are that: the venturi tubes are arranged in the washing tower in a modified mode, so that the washing effect on smoke is improved, the equipment height of the washing tower does not need to be increased, and the modification cost is reduced; the slurry sprayed out of the top end of the Venturi tube can slide along the inner wall of the filter tank and be collected, oil and dust are filtered through activated carbon, and then the slurry is discharged for recycling, so that the water changing frequency is greatly reduced, and the labor intensity of workers is reduced; the steel wire filter screen can prevent the active carbon from entering the elbow flange under the action of gravity; the cover pressing net can prevent the activated carbon contained in the filter tank from flying and moving under the disturbance of airflow, so that the filtering effect of the activated carbon is influenced; the elasticity and the flexibility of the rubber plate can enable the rubber plate to seal and cover the gap between the slotted hole of the gland net and the side surface of the Venturi tube, so that the active carbon is prevented from escaping from the gap; the air nozzle can spray compressed air flowing at high speed, and the pressure intensity at the outlet of the Venturi tube is reduced by increasing the air flow rate, so that the fluid speed in the Venturi tube is further increased, and the dust removal effect is improved; when dust and oil dirt filtered and isolated on the activated carbon are too much to cause that the slurry cannot enter the mobile phone in the slurry tank along the elbow flange and the return pipe, the slurry in the slurry tank is deposited in the filter tank under the continuous conveying of the water pump to cause the reduction of the liquid level height of the slurry in the slurry tank, and when the liquid level height is reduced to the opening and closing amount of the floating ball liquid level switch, the acousto-optic alarm gives an alarm to remind an operator to stop the machine to replace the activated carbon in time, so that automatic monitoring is realized; the feed pipe can supply liquid for a plurality of thick liquid shower nozzles simultaneously, can not hinder simultaneously that operating personnel from pulling down the elbow flange and change the active carbon.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a cross-sectional structural view of the present invention;

FIG. 2 is an enlarged view of A of the present invention;

FIG. 3 is a schematic structural view of the middle pressure cover net of the present invention;

FIG. 4 is a schematic structural view of a rubber sheet according to the present invention;

in the figure: 1. a washing tower; 2. quickly connecting a plug; 3. a silicone tube; 4. a fixing plate; 5. an air shower; 6. a filter tank; 7. a venturi tube; 8. activated carbon; 9. pressing a cover net; 10. a rubber plate; 1001. a cross groove; 11. an elbow flange; 12. a steel wire filter screen; 13. a variable diameter flange; 14. a return pipe; 15. a slurry tank; 16. an audible and visual alarm; 17. a float ball liquid level switch; 18. a water inlet pipe; 19. a water pump; 20. a water outlet pipe; 21. a liquid supply tube; 22. slurry spray head.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-4, the present invention provides the following technical solutions: the wet dust removal device with the Venturi structure comprises a washing tower 1, wherein a quick-connection plug 2 is fixedly mounted on the side surface of the washing tower 1, one end of the quick-connection plug 2 is connected with an air nozzle 5 through a silicone tube 3, the air nozzle 5 is fixedly mounted on the inner wall of the washing tower 1 through a fixing plate 4, the inner wall of the washing tower 1 below the air nozzle 5 is fixedly connected with the top end of a filter tank 6, a through hole matched with the venturi tube 7 is formed in the filter tank 6, activated carbon 8 is contained in the filter tank 6, a gland net 9 is covered at the top of the activated carbon 8, a rubber plate 10 is sleeved on the outer side of the venturi tube 7 above the gland net 9, one end of a return pipe 14 fixedly connected with the bottom end of the filter tank 6 through an elbow flange 11 and a reducing flange 13, and a steel wire filter screen 12 is clamped between the filter tank 6 and the elbow flange 11, the bottom end of the return pipe 14 penetrates through the top surface of the slurry pool 15, a floating ball liquid level switch 17 is installed on the inner wall of the slurry pool 15, an acoustic-optical alarm 16 and a water pump 19 are fixedly installed on the top of the slurry pool 15, the water inlet end of the water pump 19 is connected with the bottom side of the slurry pool 15 in a penetrating mode through a water inlet pipe 18, the water outlet end of the water pump 19 is connected with the side surface of a liquid supply pipe 21 in a penetrating mode through a water outlet pipe 20, and a slurry spray head 22 is fixedly installed on the top of the liquid supply pipe 21.

Specifically, the number of the venturi tubes 7 is multiple, the venturi tubes are annularly and sequentially welded and mounted on the inner side of through holes formed in the filter tank 6, and the ends, not lower than the top end, of the venturi tubes 7 are located at the top end of the filter tank 6; through a plurality of venturi tubes 7 of inside transformation installation at scrubbing tower 1, improve the washing effect to smog, need not to increase the equipment height of scrubbing tower, reduced the transformation cost.

Specifically, the activated carbon 8 is granular activated carbon, the filter tank 6 is in a conical tube structure with a wide upper part and a narrow lower part, and the top side of the filter tank 6 is welded and connected with the inner wall of the washing tower 1; the slurry sprayed from the top end of the venturi tube 7 can be collected along the inner wall of the filter tank 6 in a sliding manner, the activated carbon 8 is used for filtering oil and dust, and then the slurry is discharged for recycling, so that the water changing frequency is greatly reduced, and the labor intensity of workers is reduced.

Specifically, the steel wire filter screen 12 is a steel wire mesh structure with a mesh aperture not larger than the minimum individual diameter of the activated carbon 8; the steel wire screen 12 can prevent the activated carbon 8 from entering the elbow flange 11 under the action of gravity.

Specifically, the gland net 9 is a steel wire mesh structure with mesh openings not larger than the minimum individual diameter of the activated carbon 8, and slotted holes with diameters not smaller than the maximum diameter of the venturi tube 7 are annularly and equally arranged on the gland net 9; the capping net 9 can prevent the activated carbon 8 contained in the filter tank 6 from flying and moving under the disturbance of airflow, thereby influencing the filtering effect of the activated carbon 8.

Specifically, the rubber plate 10 is of an annular rubber pad structure, the outer diameter of the rubber plate 10 is not smaller than the diameter of a slotted hole formed in the gland net 9, the inner diameter of the rubber plate 10 is the same as the diameter of the throat of the venturi tube 7, and a cross groove 1001 is formed in the rubber plate 10; the elasticity and flexibility of the rubber plate 10 can make the rubber plate 10 close and cover the gap between the slotted hole of the gland net 9 and the side surface of the Venturi tube 7, and prevent the active carbon 8 from escaping from the gap.

Specifically, the number of the fixing plates 4 is the same as that of the venturi tubes 7, the fixing plates are annularly arranged along the inner wall of the washing tower 1, and one end of the quick-connection plug 2 is connected with an air compressor/compressed air pipeline; the air nozzle 5 can spray high-speed flowing compressed air, and the pressure intensity at the outlet of the Venturi tube 7 is reduced by increasing the air flow rate, so that the fluid speed in the Venturi tube 7 is further increased, and the dust removal effect is improved.

Specifically, the sound and light alarm 16 is electrically connected with a float level switch 17; when the dust and oil dirt separated by filtration on the activated carbon 8 are too much to cause that the slurry can not enter the slurry tank 15 along the elbow flange 11 and the backflow pipe 14, the slurry in the slurry tank 15 is deposited in the filter tank 6 under the continuous conveying of the water pump 19, so that the slurry liquid level height in the slurry tank 15 is reduced, when the liquid level height is reduced to the opening and closing amount of the floating ball liquid level switch 17, the acousto-optic alarm 16 gives an alarm to remind an operator to stop the machine in time to replace the activated carbon 8, and automatic monitoring is realized.

Specifically, the liquid supply pipe 21 is of an annular pipe structure, the number of the slurry spray heads 22 is the same as that of the venturi tubes 7, and the axis of each slurry spray head 22 coincides with the axis of one venturi tube 7; the liquid supply pipe 21 can simultaneously supply liquid for a plurality of slurry nozzles 22, and meanwhile, the operator is not prevented from removing the elbow flange 11 to replace the activated carbon 8.

The working principle and the using process of the invention are as follows: when the device is used for dedusting, after the flue gas containing pollutants enters the washing tower 1, the flue gas passes through the Venturi tube 7 from bottom to top, meanwhile, the water pump 19 is started to pump out the slurry in the slurry pool 15 through the water inlet pipe 18, the slurry is sent out along the water outlet pipe 20, the liquid supply pipe 21 and the slurry spray nozzle 22 and is sprayed into the Venturi tube 7 from the bottom end of the Venturi tube 7, the circulating slurry catches dust particles in the flue gas and continues to move upwards along with the flue gas after the flue gas enters the Venturi tube 7, after acceleration, deceleration, pressure rise and pressure reduction, the flue gas is sprayed out from the outlet at the upper end of the Venturi tube 7, the purified gas moves towards the upper end of the washing tower 1 continuously, the slurry containing impurities slides down and is collected along the inner wall of the filter tank 6, the air spray nozzle 5 arranged above the Venturi tube 7 can spray high-speed flowing compressed air, the pressure at the outlet of the Venturi tube 7 is reduced by improving the air flow rate, the fluid speed in the Venturi tube 7 is further improved, and the dust removal effect is improved; impurities and oil phase in the slurry collected in the filter tank 6 are filtered by the activated carbon 8 and are isolated and adsorbed in the activated carbon 8, and the purified slurry enters the slurry tank 15 along the elbow flange 11, the reducing flange 13 and the return pipe 14 under the action of gravity and is pumped out by the water pump 19 for recycling; when the dust and oil dirt separated by filtration on the activated carbon 8 are too much to cause that the slurry can not enter the slurry tank 15 along the elbow flange 11 and the backflow pipe 14, the slurry in the slurry tank 15 is deposited in the filter tank 6 under the continuous conveying of the water pump 19, so that the slurry liquid level height in the slurry tank 15 is reduced, when the liquid level height is reduced to the opening and closing amount of the floating ball liquid level switch 17, the acousto-optic alarm 16 gives an alarm to remind an operator to stop the machine in time to replace the activated carbon 8, and automatic monitoring is realized.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a wet dust collector of venturi structure which characterized in that: comprises a washing tower (1), a quick-connection plug (2) is fixedly installed on the side surface of the washing tower (1), one end of the quick-connection plug (2) is connected with an air nozzle (5) through a silicone tube (3), the air nozzle (5) is fixedly installed on the inner wall of the washing tower (1) through a fixing plate (4), the inner wall of the washing tower (1) below the air nozzle (5) is fixedly connected with the top end of a filter tank (6), a through hole for installing a Venturi tube (7) in an adaptive manner is formed in the filter tank (6), active carbon (8) is contained in the filter tank (6), a gland net (9) is covered on the top of the active carbon (8), a rubber plate (10) is sleeved on the outer side of the Venturi tube (7) above the gland net (9), and one end of a return pipe (14) fixedly connected with the bottom end of the filter tank (6) through an elbow flange (11) and a reducing flange (13), the utility model discloses a slurry tank, including filter tank (6), elbow flange (11), the top surface of thick liquid pond (15) is link up to the bottom of back flow (14), floater liquid level switch (17) are installed to the inner wall in thick liquid pond (15), the top fixed mounting in thick liquid pond (15) has acousto-optic siren (16), water pump (19), the bottom side of inlet end through inlet tube (18) through-connection thick liquid pond (15) of water pump (19), the side of outlet end through outlet pipe (20) through-connection feed pipe (21) of water pump (19), the top fixed mounting of feed pipe (21) has thick liquid shower nozzle (22).

2. The venturi-structured wet scrubber apparatus according to claim 1, wherein: the number of the Venturi tubes (7) is multiple, the Venturi tubes are welded on the inner sides of the through holes formed in the filter tank (6) in an annular equal sequence, and the top ends of the Venturi tubes (7) are not lower than the top end of the filter tank (6).

3. The venturi-structured wet scrubber apparatus according to claim 1, wherein: the activated carbon (8) is granular activated carbon, the filter tank (6) is in a conical tube structure with a wide upper part and a narrow lower part, and the top side of the filter tank (6) is welded and connected with the inner wall of the washing tower (1).

4. The venturi-structured wet scrubber apparatus according to claim 1, wherein: the steel wire filter screen (12) is of a steel wire mesh structure with the mesh aperture not larger than the minimum individual diameter of the activated carbon (8).

5. The venturi-structured wet scrubber apparatus according to claim 1, wherein: gland net (9) are the wire net structure that the mesh aperture is not more than the minimum individual diameter of active carbon (8), the annular is the preface seted up the slotted hole that the diameter is not less than the maximum diameter of venturi (7) on gland net (9).

6. The venturi-structured wet scrubber apparatus according to claim 1, wherein: the rubber plate (10) is of an annular rubber pad structure, the outer diameter of the rubber plate (10) is not smaller than the diameter of a slotted hole formed in the gland net (9), the inner diameter of the rubber plate (10) is the same as the diameter of a throat of the Venturi tube (7), and a cross groove (1001) is formed in the rubber plate (10).

7. The venturi-structured wet scrubber apparatus according to claim 1, wherein: the number of the fixing plates (4) is the same as that of the Venturi tubes (7), the fixing plates are installed along the circumferential direction of the inner wall of the washing tower (1), and one end of the quick-connection plug (2) is connected with an air compressor/compressed air pipeline.

8. The venturi-structured wet scrubber apparatus according to claim 1, wherein: the acousto-optic alarm (16) is electrically connected with the floating ball liquid level switch (17).

9. The venturi-structured wet scrubber apparatus according to claim 1, wherein: the liquid supply pipe (21) is of an annular pipe structure, the number of the slurry spray heads (22) is the same as that of the venturi pipes (7), and the axis of each slurry spray head (22) coincides with the axis of one venturi pipe (7).

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