阅读说明：本技术 微尘聚并装置 (Fine dust coalescence device ) 是由 潘祖明 于 2021-03-03 设计创作，主要内容包括：本发明提出了一种微尘聚并装置,包括壳体,壳体内设有导流通道、聚并通道和整流稳流通道；聚并通道的内壁设有多个相互间隔设置的扰流钝体叶片,导流通道内设有若干第一导流钝体,整流稳流通道内设有若干无缝钝体。通过在聚并通道内设置扰流钝体叶片,粉尘气流经过扰流钝体叶片时会在扰流钝体叶片的背风面形成回流,在相邻的两个扰流钝体叶片相互间隔以形成缝隙,用于在扰流钝体叶片间产生向前的气流,以产生团聚并防止粉尘堆积；回流和向前气流相互作用,以形成流动复合聚并,粉尘会因此碰撞、吸附并粘结并长大,直至粉尘颗粒流出聚并通道；小颗粒物粒径变大,PM2.5以下的颗粒物则会减少。(The invention provides a micro dust coalescence device, which comprises a shell, wherein a flow guide channel, a coalescence channel and a rectification and flow stabilization channel are arranged in the shell; the inner wall of the merging channel is provided with a plurality of turbulent blunt body blades which are arranged at intervals, a plurality of first flow guide blunt bodies are arranged in the flow guide channel, and a plurality of seamless blunt bodies are arranged in the rectification flow stabilizing channel. By arranging the turbulent flow blunt body blades in the coalescence channel, dust airflow can form backflow on the leeward side of the turbulent flow blunt body blades when passing through the turbulent flow blunt body blades, and two adjacent turbulent flow blunt body blades are mutually spaced to form a gap for generating forward airflow between the turbulent flow blunt body blades so as to generate agglomeration and prevent dust accumulation; the backflow and the forward airflow interact to form flowing composite coalescence, and dust can collide, adsorb, bond and grow up until dust particles flow out of the coalescence channel; the small particulate matter becomes larger in particle size, and the particulate matter of PM2.5 or less is reduced.)

1. A micro-dust coalescence device comprises a shell (10), and is characterized in that a flow guide channel (30), a coalescence channel (40) and a rectification flow stabilizing channel (50) are arranged in the shell (10);

the outlet of the flow guide channel (30) is connected with the inlet of the merging channel (40), and the inlet of the rectifying and flow stabilizing channel (50) is connected with the outlet of the merging channel (40);

the inner wall of the merging channel (40) is provided with a plurality of disturbed flow blunt body blades (41) which are arranged at intervals and used for controlling dust airflow in the merging channel (40) so as to form vortex and reflux;

a plurality of first flow guiding blunt bodies (31) are arranged in the flow guiding channel (30), and the surfaces of the first flow guiding blunt bodies (31) are streamline-shaped curved surfaces and are used for guiding and homogenizing dust airflow in the flow guiding channel (30);

the novel dust collector is characterized in that a plurality of seamless bluff bodies (51) are arranged in the rectifying and flow stabilizing channel (50), gaps exist between the top ends of the seamless bluff bodies (51) and the upper inner wall of the rectifying and flow stabilizing channel (50), the bottom ends of the seamless bluff bodies are connected with the lower inner wall of the rectifying and flow stabilizing channel (50) through a plurality of heightening blocks (60), and gaps for introducing dust airflow are arranged between every two adjacent heightening blocks (60).

2. The fine dust coalescence device of claim 1, wherein a plurality of second flow guide bluff bodies (52) are further arranged in the rectification flow stabilization channel (50);

a gap is formed between the top end of the second flow guide blunt body (52) and the upper inner wall of the rectifying and flow stabilizing channel (50), and the bottom end of the second flow guide blunt body (52) is connected with the lower inner wall of the rectifying and flow stabilizing channel (50).

3. The mote coalescing assembly of claim 2, wherein the tip of the second baffle bluff body (52) is a streamlined curved surface.

4. The mote coalescing apparatus according to claim 1, wherein a predetermined gap is formed between two adjacent block mats (60) to form a first vent hole (53), an inlet of the first vent hole (53) faces an inlet of the rectifying and flow stabilizing channel (50), and an outlet of the first vent hole (53) faces an outlet of the rectifying and flow stabilizing channel (50).

5. A mote coalescing assembly according to claim 1, wherein the cross-sectional shape of the flow guide channel (30) and the cross-sectional shape of the coalescing channel (40) are both the same as the cross-sectional shape of the rectifying and flow stabilizing channel (50).

6. The particle coalescence device of claim 1, wherein the spoiler blade (41) comprises a base (412) and a bent portion (411) connected to the base (412), the base (412) is attached to the inner wall of the coalescence channel (40), and the bent portion (411) is inclined toward the outlet of the coalescence channel (40).

7. A mote coalescing assembly according to claim 1, wherein the turbulator bluff body blades (41) are provided on an upper inner wall and/or a lower inner wall of the coalescing channel (40).

8. The fine dust coalescence apparatus according to claim 1, wherein a plurality of baffles (20) are disposed in parallel in said housing (10), and said baffles (20) divide said housing (10) into a plurality of parallel gas flow passages;

the airflow channel comprises three parts, namely a flow guide channel (30), a coalescence channel (40) and a rectification flow stabilizing channel (50).

9. The mote coalescing apparatus according to claim 8, wherein the turbulence bluff body blades (41) are fixedly attached to the surface of the baffle (20);

the height of the turbulent blunt body blade (41) arranged on the partition plate (20) is 1-5 cm;

the distance between two adjacent baffles (20) is 2.5-9 times of the height of the turbulent blunt body blade (41).

Technical Field

The invention relates to the technical field of environment-friendly equipment, in particular to a micro dust coalescence device.

Background

The pollution of coal-fired flue gas particles is a key point of common attention of the current society, small particles (the aerodynamic diameter is less than 2.5 μm, PM2.5 for short) in coal-fired flue gas are difficult to remove by traditional dust removal equipment, are easy to be absorbed by human bodies, are easy to cause serious atmospheric environmental pollution, and are one of main air pollutants causing low atmospheric visibility besides direct damage to human bodies.

In industrial production, a bag-type dust collector is usually adopted to remove small particles in air, a single-layer bag is not enough to effectively intercept PM2.5, the number of the layers of the bag can be increased to effectively intercept PM2.5, but the resistance of a flue of the dust collector is increased, so that the work efficiency of the bag-type dust collector is reduced, and the cost is relatively high; in addition, the bag-type dust collector also needs to clean dust regularly, and the dust cleaning operation is particularly inconvenient for a plurality of layers of bags; under the long-term jetting effect of the bag-type dust remover, the bag is still easy to damage, so that the dust removing capability of the bag-type dust remover is weakened, and the bag-type dust remover cannot reach the discharge standard. Therefore, under the current requirement of seeking ultra-low and even ultra-clean emission of coal-fired flue gas, a high-efficiency and low-cost dust removal device is urgently needed.

Disclosure of Invention

In view of the above, the present invention provides a fine dust coalescence apparatus.

The technical scheme of the invention is realized as follows: the invention provides a micro dust coalescence device, which comprises a shell (10), wherein a flow guide channel (30), a coalescence channel (40) and a rectification flow stabilizing channel (50) are arranged in the shell (10);

the outlet of the flow guide channel (30) is connected with the inlet of the merging channel (40), and the inlet of the rectifying and flow stabilizing channel (50) is connected with the outlet of the merging channel (40);

the inner wall of the merging channel (40) is provided with a plurality of disturbed flow blunt body blades (41) which are arranged at intervals and used for controlling dust airflow in the merging channel (40) so as to form vortex and reflux;

a plurality of first flow guiding blunt bodies (31) are arranged in the flow guiding channel (30), and the surfaces of the first flow guiding blunt bodies (31) are streamline-shaped curved surfaces and are used for guiding and homogenizing dust airflow in the flow guiding channel (30);

the novel dust collector is characterized in that a plurality of seamless bluff bodies (51) are arranged in the rectifying and flow stabilizing channel (50), gaps exist between the top ends of the seamless bluff bodies (51) and the upper inner wall of the rectifying and flow stabilizing channel (50), the bottom ends of the seamless bluff bodies are connected with the lower inner wall of the rectifying and flow stabilizing channel (50) through a plurality of heightening blocks (60), and gaps for introducing dust airflow are arranged between every two adjacent heightening blocks (60).

On the basis of the technical scheme, preferably, a plurality of second flow guide bluff bodies (52) are further arranged in the rectification flow stabilization channel (50);

a gap is formed between the top end of the second flow guide blunt body (52) and the upper inner wall of the rectifying and flow stabilizing channel (50), and the bottom end of the second flow guide blunt body (52) is connected with the lower inner wall of the rectifying and flow stabilizing channel (50).

On the basis of the above technical solution, preferably, the top end of the second blunt flow guiding body (52) is a streamline curved surface.

On the basis of the above technical solution, preferably, a first vent hole (53) is arranged between two adjacent block mats (60), an inlet of the first vent hole (53) faces an inlet of the rectifying and flow stabilizing channel (50), and an outlet of the first vent hole (53) faces an outlet of the rectifying and flow stabilizing channel (50).

On the basis of the technical scheme, preferably, the cross section shape of the flow guide channel (30) and the cross section shape of the coalescence channel (40) are the same as the cross section shape of the rectification flow stabilizing channel (50).

On the basis of the above technical scheme, preferably, the spoiler bluff body blade (41) includes base (412) and with bend portion (411) that base (412) are connected, base (412) with the inner wall laminating of merging channel (40) is connected, bend portion (411) orientation the export slope of merging channel (40).

On the basis of the above technical solution, preferably, the spoiler blade (41) is disposed on an upper inner wall and/or a lower inner wall of the merging channel (40).

On the basis of the technical scheme, preferably, a plurality of parallel partition plates (20) are arranged in the shell (10), and the shell (10) is divided into a plurality of parallel airflow channels by the plurality of partition plates (20);

the airflow channel comprises three parts, namely a flow guide channel (30), a coalescence channel (40) and a rectification flow stabilizing channel (50).

On the basis of the technical scheme, preferably, the turbulent blunt body blade (41) is fixedly connected to the surface of the partition plate (20);

the height of the turbulent blunt body blade (41) arranged on the partition plate (20) is 1-5 cm;

the distance between two adjacent baffles (20) is 2.5-9 times of the height of the turbulent blunt body blade (41).

Compared with the prior art, the micro dust coalescence device has the following beneficial effects:

(1) through the arrangement of the turbulence blunt body blades in the coalescence channel, dust airflow can form backflow on the leeward side of the turbulence blunt body blades when passing through the turbulence blunt body blades, and two adjacent turbulence blunt body blades are arranged at intervals to form a gap and used for generating forward airflow between the turbulence blunt body blades so as to generate agglomeration and prevent dust accumulation; the back-flow and forward-flow interact to form a flowing composite coalescence, whereupon the dust particles collide, adsorb, bind, and grow. When the particles reach a certain particle size, the grown particles can continuously flow forwards due to the action and disturbance of various forces; because the flow field passing through the turbulent bluff body blades rotates, different air flows can be agglomerated on the leeward side of different turbulent bluff body blades until the air flows out of the agglomeration channel; the small particles will become bigger, and the particles below PM2.5 will be reduced, so as to ensure that the dust removing equipment can perform efficient dust removing operation. Meanwhile, the dust particle coalescence device does not need to be replaced for many times, can effectively operate for a long time and has relatively low cost. On the other hand, the outlet of the merging channel is connected with the rectification and flow stabilization channel, so that high-speed vortexes can be broken, the reflux intensity is weakened, dust is prevented from being attached to the inner wall of the rectification and flow stabilization channel due to vortex agglomeration, and dust airflow can be discharged into the dust removal equipment more uniformly and stably.

(2) The second flow guide blunt body is arranged between the seamless blunt body and the outlet of the rectification flow stabilization channel, the top end of the second flow guide blunt body is a streamline curved surface and can play a role similar to a Venturi tube, so that the flowing-out dust airflow does not have a backflow phenomenon, and the dust airflow is restored to be in a standard in-tube flowing state.

(3) The cross section shape of the flow guide channel and the cross section shape of the coalescence channel are the same as the cross section shape of the rectification flow stabilizing channel, so that the dust airflow is guided straight.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of a mote coalescing assembly of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of a first blunt flow directing body according to the present invention;

FIG. 4 is a schematic diagram of the structure of a seamless bluff body and a second bluff body of the present invention;

FIG. 5 is a schematic view of the aerodynamic movement of air flow and particles under the action of the blades of a turbulator bluff body

FIG. 6 is a graph showing particle size analysis of dust emission of a conventional fine dust coalescence apparatus;

FIG. 7 is a graph showing particle size analysis of dust emission of the fine dust coalescence apparatus of the present invention.

Description of reference numerals:

10-a housing; 20-a separator;

30-a flow guide channel; 31-a first flow bluff body;

40-coalescence channels; 41-a turbulent bluff body blade; 411-bending part; 412-a base;

50-rectifying and flow-stabilizing channel; 51-seamless bluff body; 52-a second bluff body; 53-a first vent;

60-block of bed hedgehopping; 70-large particulate matter; 80-Small particles.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

The description relating to "first", "second", etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

The embodiment of the invention provides a micro dust coalescence device, wherein a dust discharge port of the micro dust coalescence device can be connected with a dust receiving port of a dust removing device, so that the technical problem that the existing dust removing device has low removal efficiency or cannot remove small particulate matters of PM2.5 or below can be effectively solved, and the micro dust coalescence device is a pretreatment device for improving the dust removing efficiency by additionally arranging a coalescence device after dust particles grow up without changing the existing dust removing system.

An embodiment of the present invention provides a fine dust coalescence apparatus, as shown in fig. 1 and 2, including a housing 10 and a plurality of partitions 20.

Casing 10, as shown in fig. 1 and 2, casing 10 can set up to the cuboid structure, and both ends are uncovered about the casing 10 of cuboid structure, and the left end is uncovered for airflow outlet, and the right-hand member is uncovered for airflow inlet, and the dust air current can let in and discharge from airflow outlet from airflow inlet. The shell 10 can be divided into a flow guide section, a merging section and a flow stabilizing section, wherein the flow guide section is used for stably guiding the dust airflow into the merging section; the coalescence section is used for agglomerating particulate matters in the dust airflow; the steady flow section is used for weakening the strength of vortex or backflow, so that dust airflow is stably and uniformly discharged into the dust removal equipment.

The partition 20 may be made of wood, steel or other material. As shown in fig. 1, a plurality of baffles 20 are arranged in parallel in the housing 10, the baffles 20 are spaced from each other and divide the inner cavity of the housing 10 into a plurality of parallel airflow channels, each airflow channel is divided into three sections, namely a flow guiding section, a merging section and a rectifying and flow stabilizing section, the portion of the airflow channel in the flow guiding section is a flow guiding channel 30, the portion in the merging section is a merging channel 40, and the portion in the rectifying and flow stabilizing section is a rectifying and flow stabilizing channel 50.

The merging channel 40, as shown in fig. 1 and 2, has an inlet connected to the outlet of the flow guide channel 30 and an outlet connected to the inlet of the rectifying and flow stabilizing channel 50, respectively. Turbulence blunt body blades 41 are arranged in the merging channel 40, and the turbulence blunt body blades 41 are used for controlling dust airflow in the merging channel 40 so as to form vortex and backflow.

The spoiler blades 41 are spaced from each other, and a blade base may be disposed at the bottom of the spoiler blades 41 to support the spoiler blades 41. The turbulent blunt body blades 41m x n matrix type are arranged at intervals and fixedly connected to the inner wall of the coalescence channel 40, wherein m is more than or equal to 2, and n is more than or equal to 2. When the dust airflow passes through the spoiler blades 41, a backflow may be formed at a leeward side of the spoiler blades 41, and a forward airflow may be formed between gaps of two adjacent spoiler blades 41, and a forward airflow direction is substantially parallel to a moving direction of the dust airflow. The moving direction of the dust airflow is approximately parallel to the trend of the merging channel 40, the m arrangement direction is parallel to the moving direction of the dust airflow, and the n arrangement direction is perpendicular to the moving direction of the dust airflow. The turbulence blunt body blades 41 arranged in a matrix form can be uniformly distributed on the inner wall of the coalescence channel 40 to ensure that the dust airflow uniformly passes through the coalescence channel 40.

Specifically, the spoiler blades 41 may be disposed on the upper surface or the lower surface of the partition plate 20, or the spoiler blades 41 may be disposed on both the upper and lower surfaces of the partition plate 20, and the spoiler blades 41 may be inclined toward the outlet of the merging channel 40.

Further, as shown in fig. 5, each spoiler blade 41 is "L" shaped, each spoiler blade 41 includes a base 412 and a bending portion 411 connected to the base 412, the base 412 is fixedly connected to the inner wall of the merging channel 40 in an attached manner, and the bending portion 411 is inclined toward the outlet of the merging channel 40. In order to facilitate the adjustment of the angle between the spoiler blade 41 and the partition 20, a damping rotating shaft mechanism may be disposed at the bottom end of the bending portion 411, the damping rotating shaft mechanism is used to connect the base 412, and the spoiler blade 41 may be adjusted in inclination angle with the base 412 through the damping rotating shaft mechanism.

As shown in fig. 1 and 2, the inlet of the flow guide channel 30 can receive the dust airflow, the outlet of the flow guide channel 30 is connected to the inlet of the merging channel 40, the dust airflow guided out of the flow guide channel 30 enters the merging channel 40, and a plurality of first flow guide blunt bodies 31 are arranged in the flow guide channel 30.

As shown in fig. 1 and 3, the first flow guiding blunt body 31 has a bottom end connected to the lower inner wall of the flow guiding channel 30 and a top end spaced from the upper inner wall of the flow guiding channel 30. Specifically, the bottom end of the first flow guiding blunt body 31 may be connected to the partition plate 20, and a gap may exist between the top end of the first flow guiding blunt body 31 and the partition plate 20 adjacent above, through which the dust airflow may pass.

The top end of the first flow guiding blunt body 31 is a streamline curved surface which can reduce the resistance borne by the dust airflow during moving to the maximum extent and ensure that the dust airflow still has higher flow velocity during discharging so as to improve the coalescence efficiency of the micro dust coalescence device; and the dust airflow can play a role similar to a venturi tube when passing through the streamline curved surface of the first guiding blunt body 31 (the principle of the venturi effect is that when wind blows over an obstacle, the air pressure near the upper end of the leeward side of the obstacle is relatively low, so that an adsorption effect is generated and air flows are caused), so that the dust airflow is restored to a standard flowing state in the pipe.

The number of the first flow guiding blunt bodies 31 may be determined according to practical situations, and is generally two. Meanwhile, the dust airflow is discharged from the gap between the first guiding blunt body 31 and the partition plate 20, and the dust airflow can be uniformly guided to a certain degree, so that the dust airflow can smoothly and uniformly enter the coalescence channel 40.

Because the 'growth' of the particles is realized through the vortex in the coalescence channel 40, the vortex and the backflow are still arranged at the outlet of the coalescence channel 40, and the vortex and the backflow do not meet the characteristic requirements of the dust removing equipment, so that the vortex can interfere the dust airflow entering the dust removing equipment, and the absorption of the dust by the dust removing equipment is not facilitated. Moreover, the vortex can cause the large particles which are already merged in the coalescence device to be dispersed into small particles, and the coalescence effect of the coalescence device is influenced. In order to weaken the strength of vortex and backflow and ensure that the dust airflow is more uniformly and stably discharged into the dust removing equipment, a plurality of seamless bluff bodies 51 and a plurality of second flow guiding bluff bodies 52 are arranged in the rectifying and flow stabilizing channel 50.

As shown in fig. 1 and 4, the rectifying and flow stabilizing channels 50 correspond to the merging channels 40 one by one, an inlet of the rectifying and flow stabilizing channel 50 is connected with an outlet of the merging channel 40, and the dust airflow discharged from the merging channel 40 enters the rectifying and flow stabilizing channels 50. The outlet of the rectification flow stabilizing channel 50 can be connected with a dust airflow receiving opening of the dust removing equipment, and the dust airflow discharged by the rectification flow stabilizing channel 50 enters the dust removing equipment.

The seamless bluff body 51, as shown in fig. 1 and 4, may connect the bottom end of the seamless bluff body 51 with the lower inner wall of the rectifying and flow stabilizing channel 50, and a gap exists between the top end of the seamless bluff body 51 and the upper inner wall of the rectifying and flow stabilizing channel 50. Specifically, the seamless blunt body 51 may be attached to the upper surface of the partition plate 20, the length of the seamless blunt body 51 may be set to be equal to the width of the partition plate 20, and a gap through which the dust flow may be discharged exists between the tip of the seamless blunt body 51 and the upper partition plate 20 adjacent thereto. The number of seamless bluff bodies 51 may be determined based on the length of the rectifying flow stabilizing channel 50. Typically, the number of seamless bluff bodies 51 is two.

In order to prevent scaling on the leeward side of the seamless bluff body 51, as shown in fig. 4, a plurality of block-ups 60 may be disposed at the bottom end of the seamless bluff body 51, the block-ups 60 are used to support the seamless bluff body 51, the seamless bluff body 51 may be connected to the surface of the partition 20 through the block-ups 60, and a gap is preset between two adjacent block-ups 60 to form the first vent hole 53.

When the dust airflow is introduced into the rectification flow stabilizing channel 50, a part of the dust airflow is introduced through a gap between the seamless bluff body 51 and the upper partition plate 20 adjacent to the seamless bluff body, a part of the dust airflow is introduced through the first vent hole 53, and the dust airflow introduced through the first vent hole 53 can blow away dust accumulated at the bottom of the leeward side of the seamless bluff body 51 due to vortex and backflow, so that the scaling phenomenon of the leeward side of the seamless bluff body 51 can be effectively prevented; meanwhile, the dust airflow introduced through the first vent hole 53 is combined with the dust airflow introduced through the gap above the seamless bluff body 51 on the leeward side of the seamless bluff body 51, and thus the backflow strength of the leeward side of the seamless bluff body 51 is weakened.

Based on the same consideration, the block body of the heightening block 60 can be provided with a vent hole, the axis of which is parallel to the axis of the first vent hole 53, so as to prevent the leeward side of the heightening block 60 from being scaled. According to practical conditions, the bottom ends of the first flow guiding blunt body 31 and the second flow guiding blunt body 52 may also be provided with a block 60, and a gap is preset between the two blocks to form a vent hole, so as to prevent scaling on the leeward side of the first flow guiding blunt body 31 and the second flow guiding blunt body 52.

The outlet of the coalescence channel 40 is connected with a rectification and flow stabilization channel 50, and unstable dust airflow passes through a seamless bluff body 51, so that vortex can be effectively broken and the strength of backflow can be reduced; on the one hand, the agglomerated large particles 70 can be prevented from being dispersed into small particles 80 due to unstable vortex and backflow, and dust airflow can be more uniformly and stably discharged into the dust removal equipment, so that the dust removal equipment is ensured to have higher dust removal efficiency. Meanwhile, the bottom end of the seamless bluff body 51 forms a first vent hole 53 through the heightening block 60 arranged at intervals, so that scaling on the leeward side of the seamless bluff body 51 can be effectively prevented.

The second flow guiding blunt body 52, as shown in fig. 4, is disposed between the seamless blunt body 51 and the outlet of the rectifying and flow stabilizing channel 50 for breaking the vortex in the rectifying and flow stabilizing channel 50 and weakening the strength of the backflow to guide a uniform and stable dust flow. The number of the second guiding blunt bodies 52 may be determined according to practical situations, and is generally two. The bottom end of the second flow guiding bluff body 52 is connected with the lower inner wall of the rectifying and flow stabilizing channel 50, and a gap exists between the top end of the second flow guiding bluff body 52 and the upper inner wall of the rectifying and flow stabilizing channel 50. The top end of the second guiding blunt body 52 may be a streamline curved surface to ensure that the dust airflow is subjected to a small resistance when passing through the rectifying and flow stabilizing channel 50.

The second flow guiding blunt body 52 is arranged between the seamless blunt body 51 and the outlet of the rectifying and flow stabilizing channel 50, the top end of the second flow guiding blunt body 52 is a streamline curved surface, and can play a role similar to a venturi tube (the principle of the venturi effect is that when wind blows over an obstacle, the air pressure near the upper end of the leeward side of the obstacle is relatively low, so that an adsorption effect is generated and air flows, the flowing-out dust airflow does not have a backflow phenomenon, and the dust airflow is recovered to be in a standard in-tube flowing state.

In order to effectively straighten the dust flow and ensure the dust flow to flow smoothly, as shown in fig. 1 and 2, the cross-sectional shape of the rectifying and flow stabilizing channel 50 is the same as the cross-sectional shape of the merging channel 40. The cross-sectional shape of the flow-directing passage 30 may also be configured to be the same as the cross-sectional shape of the coalescence passage 40, for the same considerations.

The dust flow moves along the diversion channel 30, the coalescence channel 40 and the rectification flow stabilization channel 50, and the moving direction of the dust flow is approximately parallel to the trend of the three channels. As shown in fig. 2, the spoiler blades 41 are arranged in an m x n matrix in a direction parallel to the dust flow and perpendicular to the dust flow and are fixedly attached to the surface of the partition plate 20. The m arrangement direction is parallel to the moving direction of the dust airflow, and the n arrangement direction is vertical to the moving direction of the dust airflow.

Specifically, the height of the turbulent bluff body blade 41 arranged on the partition plate 20 is 1-5 cm; the distance between two adjacent turbulent blunt body blades 41 arranged in the m direction is 3-15 times the length of each turbulent blunt body blade 41; the distance between two adjacent turbulent blunt body blades 41 arranged in the n direction is 1/10-1/2 of the width of each turbulent blunt body blade 41; the distance between two adjacent baffles 20 is 2.5-9 times the height of the turbulent blunt body blade 41.

The dust airflow enters from the inlet of the flow guide channel 30 and is discharged from the gap between the streamline-shaped curved surface of the first flow guide blunt body 31 and the partition plate 20, so that the dust airflow can be uniformly guided to a certain degree, and the dust airflow can smoothly and uniformly enter the coalescence channel 40.

As shown in fig. 5, by providing the spoiler blades 41 in the merging channel 40, dust airflow may form backflow or vortex on the leeward side of the spoiler blades 41 when passing through the spoiler blades 41, and forward airflow between the gaps of two adjacent spoiler blades 41, when backflow or vortex exists in the flow field, the small particles 80 may rotate along with the backflow or vortex, and the large particles 70 may directly pass through the backflow or vortex due to the inertia. Thus, the small particles 80 collide with the large particles 70 and thus adhere to the large particles 70, so that the fine dust coalescence apparatus discharges dust of larger particles to reduce the discharge of PM 2.5.

By arranging the turbulent blunt body blades 41 in the coalescence channel 40, dust airflow can form backflow on the leeward side of the turbulent blunt body blades 41 when passing through the turbulent blunt body blades 41, and two adjacent turbulent blunt body blades 41 are arranged at intervals to form a gap for generating forward airflow between the turbulent blunt body blades 41 to generate agglomeration and prevent dust accumulation; the back-flow and forward-flow interact to form a flowing composite coalescence, whereupon the dust particles collide, adsorb, bind, and grow. When the particles reach a certain particle size, the grown particles can continuously flow forwards due to the action and disturbance of various forces; because the flow field passing through the turbulent bluff body blades 41 rotates, different air flows have the opportunity to generate agglomeration on the leeward sides of the different turbulent bluff body blades 41 until the air flows out of the coalescence channel; the small particles will become bigger, and the particles below PM2.5 will be reduced, so as to ensure that the dust removing equipment can perform efficient dust removing operation. Meanwhile, the dust particle coalescence device does not need to be replaced for many times, can effectively operate for a long time and has relatively low cost.

Set up seamless bluff body 51 in rectification stationary flow passageway 50, gather the unstable dust air current that passageway 40 discharged and pass through seamless bluff body 51, but broken high-speed swirl and weaken the backward flow intensity to, can also prevent to a certain extent to gather good big particulate matter 70 dispersion, gather and have higher gathering efficiency with the assurance micronic dust. Meanwhile, the bottom end of the seamless bluff body 51 forms a first vent hole 53 through the heightening block 60 arranged at intervals, so that scaling on the leeward side of the seamless bluff body 51 can be effectively prevented.

FIG. 6 is a graph showing particle size analysis of dust emission of a conventional fine dust coalescence apparatus; FIG. 7 is a graph showing particle size analysis of dust emission of the fine dust coalescence apparatus of the present invention. In conjunction with fig. 6 and 7, it is evident that PM2.5 emissions can be significantly reduced using the mote collection device of the present invention.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.