CN209997390U

CN209997390U - dust removing device

Info

Publication number: CN209997390U
Application number: CN201920516007.7U
Authority: CN
Inventors: 廖荣福; 陈逸卿; 王少平; 周炳桐; 汤丹卡; 钟云辉
Original assignee: XIAMEN LONGKING BULK MATERIALS SCIENCE AND ENGINEERING Co Ltd
Current assignee: Xiamen Longjing environmental protection material technology Co.,Ltd.
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-01-31
Anticipated expiration: 2029-04-16

Abstract

The utility model discloses an dust collector, including coalescence ware and swirler, the coalescence ware includes casing, the casing has air inlet and gas outlet, be equipped with a plurality of atomizing nozzle in the casing, can spray atomizing water, be used for the coalescence of dust, the swirler includes the second casing, has the second air inlet, the second air inlet with through the tuber pipe intercommunication between the gas outlet, the gas collection fluid-discharge tube, the position of its lower terminal surface is less than the second air inlet, the upper end of gas collection fluid-discharge tube can link to each other with the blast pipe, a plurality of cyclone tubes, set up in the second casing, all be equipped with at least whirl blades in each cyclone tube, and each the lower extreme of cyclone tube all with the gas collection fluid-discharge tube is linked together.

Description

dust removing device

Technical Field

The utility model relates to a dust removal technical field, concretely relates to kinds of dust collector who has better collection effect to the fine particle dust.

Background

For fine particle dust, especially ultrafine particle dust below 10 microns, the drag force of the airflow on dust particles is far greater than the centrifugal force or gravity applied to the dust particles, so that dust collection is difficult to be carried out in a centrifugal separation and gravity settling manner; the ultrafine particle dust is difficult to charge, and the electrostatic force borne by the ultrafine particle dust is usually smaller than the fluid drag force when passing through an electrostatic field, so the ultrafine particle dust is not easy to be captured by an anode plate in the electrostatic dust collector; the pores of the filter material have limit values, which are difficult to be very small, so that the ultrafine particles are difficult to filter by adopting a filtering mode.

Therefore, the technical problem to be solved by those skilled in the art is still how to provide dust removing devices to better collect fine dust particles.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing kind of dust collector, this dust collector can congeal the dust earlier, then carries out centrifugal separation again, also has better effect of getting rid of to the dust of the difficult fine particle of handling among the prior art, superfine granule.

In order to solve the technical problem, the utility model provides an dust collector, including coalescence ware and swirler, the coalescence ware includes casing, the casing has air inlet and gas outlet, be equipped with a plurality of atomizing nozzle in the casing, can spray atomizing water, be used for the coalescence of dust, the swirler includes the second casing, has the second air inlet, through the tuber pipe intercommunication between the second air inlet and the gas outlet, the position of its lower terminal surface is less than the second air inlet, the upper end of gas collection flowing back pipe can link to each other with the blast pipe, a plurality of cyclone tubes, set up in the second casing, all be equipped with way whirl blades in each cyclone tube, and the lower extreme of each cyclone tube all with the gas collection flowing back pipe is linked together.

The utility model provides a dust collector, including coalescence ware and swirler, atomizing nozzle in the coalescence ware can spray atomized water, and atomized water can condense the great droplet granule of formation particle diameter for the condensation core by the dust granule, simultaneously, the droplet granule that forms can collide and congeals step by step with other dust granule or droplet granule again to make the diameter of granule, quality all increase, so that subsequent separation.

The diameter of the cyclone tube is much smaller than that of the second shell, the rotating flow field formed in the cyclone tube is more violent, and further larger centrifugal force can be generated, so that the dust particles and the fog droplet particles can be separated from the air flow, the dust particles and the fog droplet particles can be more favorably separated from the air flow, in the process, the fog droplet particles attached to the tube wall of the cyclone tube can form a liquid film on the tube wall, the liquid film can adsorb the centrifugally separated dust particles, steps can be carried out to remove dust in the air flow, the flow direction of the liquid film in the tube and the flow direction of the air flow are , and the liquid film can more quickly flow downwards under the double action of gravity and air flow force, so that the separation efficiency is improved, and meanwhile, the dust particles in the liquid film and the air flow are prevented from being separated when the liquid film and the air flow direction are not changed, so that the dust particles are favorably separated when the liquid film and the air flow are not changed, the dust particles are favorably collected in the .

Therefore, the utility model provides a dust collector also has better effect of getting rid of to the dust of fine particle, superfine particle.

Optionally, the gas and liquid collecting and discharging pipe is coaxial with the second housing, the cyclone pipes surround the gas and liquid collecting and discharging pipe and are arranged at equal intervals along the circumferential direction, and the upper end surfaces of the cyclone pipes are located at the same height of .

Optionally, the second casing is provided with a second air inlet pipe, an outer port of the second air inlet pipe is the second air inlet, and an axial direction of the second air inlet pipe is perpendicular to a radial direction of the second casing.

Optionally, a merging flow channel is arranged in the th shell and used for guiding the intake air from the th air inlet to the th air outlet, and the merging flow channel has at least bends.

Optionally, a drooping baffle is disposed on a top wall of the th shell to divide the U-shaped merging flow channel into the th shell, the th air inlet and the th air outlet are both located at an upper end of the th shell, and the atomizing nozzles are disposed in the merging flow channel on both sides of the baffle.

Optionally, a collecting hopper is arranged at the lower part of the th shell and/or the second shell, a discharge pipe is connected with the collecting hopper, and the collecting hopper and the discharge pipe are not communicated with outside air in a normal state.

Optionally, the discharge pipe and the collection hopper are combined to form a communicating vessel, so that liquid loading is provided in the collection hopper; the liquid loading in the collecting hopper of the second shell does not block the coalescence flow channel.

Optionally, the lower end surface of the gas/liquid collection and discharge pipe is immersed in the liquid accumulation of the collection hopper of the second housing.

Optionally, the collecting device further comprises a flushing water pipe, and the flushing water pipe can flush the collecting bucket.

Optionally, the particle size of the atomized water sprayed by the atomizing nozzle is smaller than 100 microns, and the water vapor in the condensing flow channel is in a supersaturated state; and the flow velocity of the airflow in the condensing flow channel is less than 3 m/s.

Drawings

FIG. 1 is a graph of the change in force per mass with particle size;

fig. 2 is a schematic structural diagram of specific embodiments of the dust removing device provided by the present invention.

The reference numerals in fig. 2 are explained as follows:

1, an th shell 11, a th air inlet pipe 111, a th air outlet pipe 112, an atomizing nozzle 12, a 13 coagulation flow channel, a baffle 14, a collecting hopper 15, a discharge pipe 16 and a flushing water pipe 17;

2, a cyclone, 21 a second shell, 211 a second air inlet pipe, 22 a gas and liquid collecting and discharging pipe, 23 an air outlet pipe, 24 a cyclone pipe and 241 cyclone blades;

and 3, air pipes.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description of the present invention is made in with reference to the accompanying drawings and specific embodiments.

As used herein, the term "plurality" refers to an indefinite number of plural, usually more than two; and when the term "plurality" is used to indicate a quantity of a particular element, it does not indicate a quantitative relationship between such elements.

The words "", "second", etc. are used herein for convenience in describing two or more structures or components that are identical or similar in structure, and do not imply any particular limitation on the order.

Referring to fig. 1, fig. 1 is a graph showing the variation of unit mass force with particle size.

As shown in fig. 1, as the particle size of the particulate matter decreases, the fluid drag force per unit mass tends to increase, and particularly, when the particle size of the particulate matter is smaller than 15 μm, the fluid drag force per unit mass increases dramatically and is much larger than the centrifugal force or the pressure gradient force to which the particulate matter is subjected, and at this time, if the conventional centrifugal separation, electrostatic dust removal and other processes are adopted, it is difficult to collect the fine and ultrafine dust particles, which seriously affects the dust recovery processing.

Therefore, the utility model provides an kinds of dust collector can congeal and to foretell fine particle, ultrafine particle's dust earlier to increase the diameter of dust granule, and then can make the fluid drag force that the dust granule received be the geometric progression trend and descend, and be less than the centrifugal force that the dust granule received, then recycle centrifugal separation's mode and retrieve the dust, can guarantee the separation effect of dust, with the emission that reduces the dust.

Referring to fig. 2, fig. 2 is a schematic structural diagram of specific embodiments of the dust removing device of the present invention.

As shown in fig. 2, the dust removing apparatus provided by the present invention includes a condenser 1 and a cyclone 2, wherein:

the coalescer 1 comprises a th shell 11, a th shell 11 can be provided with a th air inlet pipe 111 and a th air outlet pipe 112, outer ports of which form a th air inlet and a th air outlet respectively, wherein a th air inlet is used for being butted with a flue (or an air outlet channel of upstream dust-removing equipment and the like) to guide a dust-containing air flow into the coalescer 1, a plurality of atomizing nozzles 12 are further arranged in a th shell 11 and can spray atomizing water, the atomizing water can be condensed into mist droplet particles with larger particle sizes by using the dust particles as condensation nuclei, and the formed mist droplet particles can collide with other dust particles or mist droplet particles and are further condensed 466 step by step, so that the particle diameters and masses are increased for subsequent separation, the outer port is a port far from the th shell 11, an th air inlet pipe 111 is taken as an example, a th air inlet pipe 111 has two axial ports, th port is connected with a th shell, an inner port is taken as a th air inlet pipe 11, a port is taken as a port, and a further port is taken as a 3985, and the same as the outer port is taken as the inlet port, and the port is taken as the same.

The cyclone 2 comprises a second shell 21, the second shell 21 can be provided with a second air inlet pipe 211, an outer port of the second air inlet pipe 211 forms a second air inlet, the second air inlet is communicated with an th air outlet through an air pipe 3 so as to guide dust-containing air flow passing through the condenser 1 into the cyclone 2, the cyclone further comprises an air collecting and discharging pipe 22, the position of the lower end face of the air collecting and discharging pipe 22 is lower than that of the second air inlet so as to prevent air entering the second air inlet from directly entering the lower end face of the air collecting and discharging pipe 22, the upper end of the air collecting and discharging pipe 22 can be connected with an exhaust pipe 23 and is used for discharging purified air, a plurality of cyclone pipes 24 are further arranged in the second shell 21, at least cyclone blades 241 are arranged in each cyclone pipe 24, and the lower end of each cyclone pipe 24 is communicated with the air collecting and discharging pipe 22.

After the dusty airflow in the second housing 21 enters from the upper end of each cyclone tube 24, under the action of the cyclone blades 241, the dusty airflow can form a rotating flow field in the cyclone tube 24, and dust particles, mist particles and the like can be separated from the airflow under the action of centrifugal force and flow downwards along the tube wall of the cyclone tube 24, and then are collected in the gas collection and liquid discharge tube 22 to be discharged. Since the swirl tubes 24 have a much smaller diameter than the second housing 21, the rotating flow field formed therein is also more intense, according to the formula F of the centrifugal force, mv²The method is characterized in that the cyclone tube 24 with a small diameter can generate larger centrifugal force under the condition of the same air flow speed, so that dust particles and fog droplet particles can be separated from the air flow more conveniently, in the process, the fog droplet particles attached to the tube wall of the cyclone tube 24 can form a liquid film on the tube wall, the liquid film can adsorb the centrifugally separated dust particles and can remove the dust in the air in steps, the flow direction of the liquid film in the cyclone tube 24 and the flow direction of the air flow are caused, the liquid film can flow downwards more quickly under the double effects of gravity and air flow acting force, so that the separation efficiency is improved, and meanwhile, the situation that the dust particles of the liquid film collected in the cyclone tube are swept away by the air flow when the air flow and the liquid film are not caused by can be avoided, so that the separation effect is ensured.

In a specific scheme, the gas and liquid collecting and discharging pipe 22 and the second shell 21 can be coaxially arranged, that is, the gas and liquid collecting and discharging pipe 22 can be a central pipe of the second shell 21, each cyclone pipe 24 can surround the gas and liquid collecting and discharging pipe 22 and be arranged at equal intervals along the circumferential direction, the distances between the central axis of each cyclone pipe 24 and the central axis of the gas and liquid collecting and discharging pipe 22 can be the same, and the upper end surfaces of the cyclone pipes 24 are positioned at the same height of , so that the uniform distribution of airflow at the inlets of the cyclone pipes 24 is ensured.

Here, the embodiment of the present invention does not limit the number of the cyclone tubes 24, the distance between the cyclone tube 24 and the gas-collecting liquid-discharging tube 22, and the number of the cyclone blades 241 arranged in each cyclone tube 24, and in specific practice, those skilled in the art can determine the number according to actual needs and by combining with -defined simulation experiments, etc.

The above-mentioned air inlet/outlet pipe 22 may be located entirely within the second casing 21, or partially within the second casing 21. the above-mentioned air inlet/outlet pipe 22 may be located entirely within the second casing 21, and may be located entirely within the second casing 21, or may be located partly within the second casing 21, where indicates that the upper end of the air inlet/outlet pipe 22 may be connected to the upper end of the second casing 21 and directly connected to the air outlet pipe 23, and the upper end of the air inlet/outlet pipe 22 may be located within the second casing 21, where the air outlet pipe 23 may extend into the second casing 21 and be connected to the air inlet/outlet pipe 22. the above-mentioned partial location within the second casing 21 means that the upper end of the air inlet/outlet pipe 22 may extend out from the second casing 21, and the extended portion may be connected to.

The axial direction of the second air inlet pipe 211 may be parallel to the radial direction of the second housing 21, or may form an included angle of with the radial direction of the second housing 21. preferably, the axial direction of the second air inlet pipe 211 may be perpendicular to the radial direction of the second housing 21, that is, the dust-containing air flow may be screwed into the second housing 21 along the tangential direction of the second housing 21, so as to form strong swirling updraft in the second housing 21, the dust particles and the mist droplet particles in the dust-containing air flow may be primarily separated from the air flow under the action of centrifugal force, and a liquid film flowing downward is formed on the pipe wall of the second housing 21, and the liquid film itself may also adsorb the dust particles in the swirling updraft, so as to further enhance the dust removal effect of .

So, the rotatory flow field that forms in each cyclone tube 24 is coordinated, and dusty air current can be through twice centrifugal separation after getting into second casing 21, more is favorable to guaranteeing the desorption effect of dust.

Here, the embodiment of the present invention also does not limit the distance between the inlet position of each cyclone tube 24 and the second air inlet, and in the specific practice, those skilled in the art can determine the distance according to the actual requirement and by combining with -determined simulation experiment, and it can be understood that the larger the distance is, the larger the vertical stroke of the rotary updraft formed in the second housing 21 is, the longer the time for the dust-containing airflow to be primarily centrifugally separated in the second housing 21 is, and the better the effect for the dust to be primarily separated in the second housing 21 is.

With continued reference to fig. 2, the lower portion of the second casing 21 may further be provided with a collecting hopper 15, the liquid film on the wall of the second casing 21 and the wall of the gas/liquid collecting/discharging pipe 22 may flow downwards into the collecting hopper 15, and the collecting hopper 15 may further be connected with a discharging pipe 16 for discharging the waste liquid collected in the collecting hopper 15. The shape of the collecting hopper 15 can be preferably conical to facilitate the collection and collection of the waste liquid; of course, the shape of the receiving hopper 15 may be other shapes, such as a cylinder, which also satisfies the purpose of collecting the waste liquid.

In a normal state, the collecting hopper 15 and the discharge pipe 16 are not communicated with the outside air, that is, the second casing 21 can be isolated from the outside. It can be understood that the exhaust pipe 23 is further connected with an induced draft fan for providing power for the airflow flowing in the condenser 1 and the cyclone 2, so that the whole of the condenser 1 and the cyclone 2 can be in a negative pressure state, and by adopting the above scheme, the lower part of the second shell 21 can be sealed to ensure the negative pressure condition inside the second shell.

In particular, the discharge pipe 16 and the collection bucket 15 can be combined to form a communicating vessel, that is, the discharge pipe 16 and the collection bucket 15 can be combined to form an approximate U-shaped structure, so that accumulated liquid can be contained in the collection bucket 15, and the accumulated liquid can seal the lower part of the second shell 21, which is beneficial to ensuring the negative pressure condition in the second shell 21. besides this scheme, a switch valve can be arranged on the discharge pipe 16, and when the liquid discharge is not needed, the switch valve can be in a closed state, and also the negative pressure in the second shell 21 can be ensured, and when the amount of the waste liquid in the collection bucket 15 reaches , the switch valve can be opened to discharge the liquid through the discharge pipe 16.

In the second casing 21, can also set up wash pipe 17 in collecting fill 15 specifically, this wash pipe 17 can wash collecting fill 15 to reduce the concentration of collecting the interior waste liquid of fill 15, thereby can assist the waste liquid to discharge fast, simultaneously, also can avoid collecting the jam of fill 15 and discharge pipe 16 to a great extent.

In addition to , the size of the lower opening of the gas/liquid collection tube 22 may be made small, so that the liquid film on the inner wall of the gas/liquid collection tube 22 may be gathered into a liquid beam when discharged from the lower opening, and the cross-sectional area of the liquid beam may be substantially equal to of the lower opening, so that the lower end of the gas/liquid collection tube 22 may be self-sealed by the liquid beam, and the direct inlet of the gas from the second gas inlet tube 211 may also be largely avoided.

With respect to the above solutions, the following embodiments of the present invention can also describe the structure of the condenser 1.

Still as shown in fig. 2, the th housing 11 may be provided with a merging flow channel 13 therein for guiding the inlet air from the th air inlet to the th air outlet, and the merging flow channel 13 has at least bends, so as to achieve aspect, the travel of the dust-containing air flow in the th housing 11 can be prolonged, the contact time between the atomized water and the dust particles is increased, and aspect, the dust-containing air flow can form turbulent flow when bent, so that the air flow and the atomized water can be more uniformly mixed at , thereby improving the collision efficiency, and further ensuring the merging effect.

Specifically, the top wall of the th casing 11 may be provided with a drooping baffle 14 to divide the U-shaped merging channel 13 into the th casing 11, at this time, the merging channel 13 is only bent below the baffle 14, at least atomizing nozzles 12 may be provided in the merging channel 13 on both sides of the baffle 14 to ensure the uniform distribution of the atomized water in the merging channel 13 as much as possible, the th air inlet and the th air outlet may be both located at the upper end of the th casing 11 to ensure that the dust-containing air flow can flow through the entire merging channel 13 to fully utilize the length of the merging channel 13, and the th air outlet is located at the upper end of the th casing 11 to ensure that the dust particles in the th casing 11 are fully settled to better remove the dust particles with larger particle size and larger gravity in the dust-containing air flow.

The atomized water sprayed from the atomizing nozzle 12 may have a particle size of less than 100 microns, preferably between 1 and 50 microns, so that parts of fine atomized water droplets can be rapidly evaporated, the humidity in the air can be supersaturated as soon as possible, and the evaporation process can lead to a temperature drop, so that the kinetic energy of the dust particles is reduced, and the saturated water vapor in the air can be condensed into mist particles by using the dust particles as condensation nuclei, and the whole "evaporation-condensation" process maintains dynamic balances.

The flow velocity of the gas flow in the coalescence flow channel 13 is not preferably too high, preferably less than 3m/s, so as to prolong the retention time of the dust-containing gas flow in the coalescer 1 as much as possible, and to enable the dust in the gas flow to better contact and coalesce with the water mist droplets.

the lower part of the housing 11 may also be provided with a collecting bucket 15, the dust particles and fog droplet particles settled in the housing 11 can flow into the collecting bucket 15, the collecting bucket 15 may also be connected with a discharge pipe 16, the discharge pipe 16 and the collecting bucket 15 may be combined to form a communicating vessel, so that the collecting bucket 15 has liquid accumulation therein, and further the lower part of the the housing 11 is liquid sealed, so as to ensure the negative pressure state in the the housing 11, and the alternatives except for the liquid seal can refer to the description of the collecting bucket 15 at the lower part of the second housing 21, and will not be repeated here.

When the collection hopper 15 and the discharge pipe 16 at the lower end of the -th shell 11 are installed, the liquid level of the accumulated liquid in the collection hopper 15 can be controlled to be lower than the lower end of the baffle plate 14, i.e. certain distance is kept between the liquid level of the accumulated liquid and the lower end of the baffle plate 14, so as to avoid blocking the coagulation flow passage 13.

is a shell 11, specifically, a flushing pipe 17 can be arranged in the collecting bucket 15, the flushing pipe 17 can flush the collecting bucket 15 to reduce the concentration of the waste liquid in the collecting bucket 15, so as to assist the waste liquid to be discharged quickly, and at the same time, the blockage of the collecting bucket 15 and the discharge pipe 16 can be avoided to a greater extent.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

The dust removal device is characterized by comprising a condenser (1) and a cyclone (2), wherein the condenser (1) comprises a -th shell (11), the -th shell (11) is provided with a -th air inlet and a -th air outlet, and a plurality of atomizing nozzles (12) are arranged in the -th shell (11) and can spray atomized water for condensing dust;

the cyclone (2) comprises:

the second shell (21) is provided with a second air inlet, and the second air inlet is communicated with the th air outlet through an air pipe (3);

the position of the lower end face of the gas and liquid collecting and discharging pipe (22) is lower than that of the second gas inlet, and the upper end of the gas and liquid collecting and discharging pipe (22) can be connected with an exhaust pipe (23);

the plurality of cyclone tubes (24) are arranged in the second shell (21), at least cyclone blades (241) are arranged in each cyclone tube (24), and the lower end of each cyclone tube (24) is communicated with the gas and liquid collecting and discharging tube (22).
2. The dust removing device according to claim 1, wherein the gas and liquid collecting and discharging pipe (22) is arranged coaxially with the second shell (21), each cyclone pipe (24) surrounds the gas and liquid collecting and discharging pipe (22) and is arranged at equal intervals along the circumferential direction, and the upper end surface of each cyclone pipe (24) is located at the same height of .
3. The dust removing device according to claim 1, wherein the second housing (21) is provided with a second air inlet pipe (211), an outer port of the second air inlet pipe (211) is the second air inlet, and an axial direction of the second air inlet pipe (211) is perpendicular to a radial direction of the second housing (21).
4. The dust collector of of claims 1-3, wherein a condensing flow channel (13) is provided in the housing (11) for guiding the inlet air from the th inlet to the th outlet, and the condensing flow channel (13) has at least bends.
5. The dust removing device of claim 4, wherein the top wall of the th shell (11) is provided with a downward-hanging baffle (14) to divide the U-shaped merging flow channel (13) in the th shell (11), the th air inlet and the th air outlet are both positioned at the upper end part of the th shell (11), and the atomizing nozzles (12) are arranged in the merging flow channel (13) at two sides of the baffle (14).
6. A dust-collecting device according to claim 4, characterized in that the lower part of the th shell (11) and/or the second shell (21) is provided with a collecting hopper (15), and the collecting hopper (15) is also connected with a discharge pipe (16);

under a normal state, the collecting hopper (15) and the discharge pipe (16) are not communicated with the outside air.
7. The dust removing device according to claim 6, wherein the discharge pipe (16) and the collecting hopper (15) are combined to form a communicating vessel so as to enable liquid loading to be arranged in the collecting hopper (15);

the liquid accumulation in the collecting hopper (15) of the second shell (21) does not block the coalescence flow channel (13).
8. A dust extraction apparatus according to claim 7, wherein the lower end face of the gas/liquid discharge pipe (22) is immersed in the liquid accumulation of the collecting hopper (15) of the second housing (21).
9. A dust extraction apparatus according to claim 6, further comprising a flushing water pipe (17), the flushing water pipe (17) being capable of flushing the collecting hopper (15).
10. The dust removing device according to claim 4, wherein the atomized water sprayed from the atomizing nozzle (12) has a particle size of less than 100 microns, and the water vapor in the condensing flow channel (13) is in a supersaturated state;

the flow velocity of the air flow in the condensing flow channel (13) is less than 3 m/s.