Wet type pre-dedusting device

Abstract

The utility model provides a wet type pre-dedusting device, which relates to the technical field of environmental protection equipment and mainly comprises an air inlet mixing chamber component, a diluent filling component, a demister component and an air outlet connecting pipe. After being mixed, wetted and condensed with water mist jetted from the diluent filling assembly in a head-on mode to form mist clusters, the mist clusters enter the demister assembly along with air flow, the air flow forms rotating air flow under the deflection effect of a flow guide plate in the demister assembly, and the mist clusters and water drops are thrown to form a water film under the effect of centrifugal force; dust and fog clusters flow into the water collecting tank along the inner wall along with water after being absorbed by the water film and flow out of the sewage draining exit, the diluent filling assembly can cool the dust with high temperature, the formed water film can also absorb dust particles with small particle sizes, and the dust removal efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection equipment, in particular to a wet pre-dust removal device. Background Art

[0002] The existing cyclone dust collector is one of the most widely used dust removal equipment in industry. Its dust removal mechanism is to make the dust-laden airflow rotate, use centrifugal force to separate the dust particles from the airflow and capture them on the wall of the device, and then use gravity to make the dust particles fall into the ash hopper.

[0003] However, this type of dust collector is only suitable for processing dust with larger particle size. For dust particles with a particle size of less than 5μm or dust with higher temperature, the removal efficiency is very low. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a wet pre-dust removal device to solve the technical problem of low removal efficiency of cyclone dust collectors in the prior art for dust particles with a particle size of less than 5μm or dust with a higher temperature.

[0005] In order to achieve the above-mentioned object, the utility model provides a wet pre-dust removal device, comprising:

[0006] Air inlet mixing chamber assembly, used to introduce dust-laden gas;

[0007] a diluent filling assembly, connected to and in communication with the air inlet mixing chamber assembly, for spraying water mist into the dust-laden gas;

[0008] The demister assembly is connected and communicated with the diluent filling assembly, and is used to form a rotating airflow. Under the action of centrifugal force, mist and water droplets are thrown onto the inner wall of the demister assembly to form a water film. Dust and mist are absorbed by the water film and flow along the inner wall with water into the water collection tank of the demister assembly and out through the sewage outlet;

[0009] The air outlet connecting pipe is connected to and communicates with the demister assembly and is used to guide the cleaned air.

[0010] According to an optional embodiment, the air inlet mixing chamber assembly includes a mixing chamber and a filter screen, and the filter screen is arranged in the inner cavity of the mixing chamber and is used for preliminarily filtering the dust-laden gas.

[0011] According to an optional embodiment, the air inlet mixing chamber assembly further includes a filter bracket and a filter support. The filter bracket is disposed in the mixing chamber and fixed by the filter support. The filter is installed in the filter bracket.

[0012] According to an optional embodiment, the diluent filling assembly includes a connecting cylinder and a spray pipe, the connecting cylinder is connected to and communicates with the mixing chamber, the spray pipe is installed in the connecting cylinder, and a plurality of spray heads are provided on the spray pipe, and the spray heads are facing the mixing chamber.

[0013] According to an optional embodiment, the spray pipes include two and are in a cross-shaped configuration. The spray pipes are connected at the intersection, and the spray heads are arranged at a preset distance on the spray pipes.

[0014] According to an optional embodiment, the connecting cylinder is further provided with an inspection port, and the inspection port is provided with an inspection cover.

[0015] According to an optional embodiment, a sewage discharge port is provided on the side of the connecting cylinder opposite to the inspection port.

[0016] According to an optional embodiment, the demister assembly includes a demister barrel and a guide plate component, the demister barrel is connected to and communicates with the connecting cylinder, and the guide plate component is provided at one end where the demister barrel is connected to the connecting cylinder.

[0017] According to an optional embodiment, the guide plate component includes an inner cover barrel, an outer cover barrel and a swirl plate, the outer cover barrel is installed in the demisting barrel body, the inner cover barrel is installed in the outer cover barrel, and the swirl plate includes several pieces, which are arranged between the inner cover barrel and the outer cover barrel, and the dust-laden gas passes through the gaps between the swirl plates.

[0018] According to an optional embodiment, a water collecting tank is provided under the defogger barrel body, the defogger barrel body is connected to the water collecting tank, and a water collecting ring and a water blocking ring are provided on the end of the inner wall of the defogger barrel body away from the connecting cylinder, the water collecting ring extends outward from the inner wall of the defogger barrel body, and the water blocking ring extends inward from the inner wall of the defogger barrel body.

[0019] The wet pre-dust removal device provided by the utility model has the following technical effects:

[0020] This wet pre-dust removal device is mainly composed of an air inlet mixing chamber assembly, a diluent filling assembly, a demister assembly and an air outlet connecting pipe. The dust-laden gas enters from the dust gas inlet of the air inlet mixing chamber assembly, is mixed with the water mist sprayed head-on from the diluent filling assembly, is moistened, and condensed to form a mist group, which then enters the demister assembly with the air flow. Due to the deflection of the guide plate in the demister assembly, the air flow forms a rotating airflow. Under the action of centrifugal force, the mist group and water droplets are thrown off to form a water film. After the dust and mist group are absorbed by the water film, they flow into the water collecting tank along the inner wall with the water and flow out from the sewage outlet. The diluent filling assembly of the utility model can cool the dust with higher temperature, and the formed water film can also absorb dust particles with smaller particle size, thereby improving the dust removal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the wet pre-dust removal device of the utility model;

[0023] Figure 2 yes Figure 1 The main view of the medium-wet pre-dust removal device;

[0024] Figure 3 yes Figure 1 Schematic diagram of the structure of the air inlet mixing chamber assembly of the medium-wet pre-dust removal device;

[0025] Figure 4 yes Figure 3 Exploded view of the center air inlet mixing chamber assembly;

[0026] Figure 5 yes Figure 1 Schematic diagram of the structure of the dilution liquid filling assembly of the medium-wet pre-dust removal device;

[0027] Figure 6 yes Figure 5 Exploded view of the diluent filling assembly;

[0028] Figure 7 yes Figure 1 Schematic diagram of the structure of the mist eliminator assembly of the medium-wet pre-dust removal device;

[0029] Figure 8 yes Figure 7 A side view of the middle demister assembly;

[0030] Figure 9 yes Figure 1 Schematic diagram of the structure of the air outlet connecting pipe of the medium-wet pre-dust removal device.

[0031] in, Figures 1-9 :

[0032] 1. Air inlet mixing chamber assembly; 11. Mixing chamber; 111. Observation port; 12. Filter; 13. Filter bracket; 14. Filter support;

[0033] 2. Dilution filling assembly; 21. Connecting cylinder; 211. Inspection port; 212. Sewage outlet; 22. Spray pipe; 221. Spray head; 222. Plug; 223. Dilution interface; 23. Inspection cover;

[0034] 3. Demister assembly; 31. Demister barrel; 32. Inner cover barrel; 33. Outer cover barrel; 34. Swirl plate; 35. Water collecting trough; 36. Water collecting ring; 37. Water blocking ring;

[0035] 4. Air outlet connecting pipe. DETAILED DESCRIPTION

[0036] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0037] The following is combined with specific Figure 1-9 A preferred embodiment of the wet pre-dust removal device of the present invention is described in detail.

[0038] like Figure 1 and Figure 2 As shown, it is a structural schematic diagram of the wet pre-dust removal device of the utility model, which includes an air inlet mixing chamber 11 component 1, a diluent filling component 2, a demister component 3 and an air outlet connecting pipe 4 from one side to the opposite side. The air inlet mixing chamber 11 component 1 is used to introduce dust-laden gas, the diluent filling component 2 is connected and communicated with the air inlet mixing chamber 11 component 1, and is used to spray water mist to the dust-laden gas, the demister component 3 is connected and communicated with the diluent filling component 2, and is used to form a rotating airflow. Under the action of centrifugal force, mist and water droplets are thrown onto the inner wall of the demister component 3 to form a water film. After the dust and mist are absorbed by the water film, they flow into the water collecting tank 35 of the demister component 3 along the inner wall with the water and flow out from the sewage outlet; and the air outlet connecting pipe 4 is connected and communicated with the demister component 3 to export the cleaned air.

[0039] In this embodiment, the front end of the air inlet mixing chamber 11 component 1 is connected to the air inlet duct through a flexible part, and the rear end is bolted to the diluent filling component, the rear end of the diluent filling component is bolted to the demister component 3, and the rear end of the demister component 3 is bolted to the air outlet connecting pipe 4, and the rear end of the air outlet connecting pipe 4 can be connected to the exhaust duct or dust collector.

[0040] The working principle is: the dust-laden gas enters from the dust gas inlet of the air inlet mixing chamber 11 component 1, mixes with the water mist sprayed head-on by the diluent filling component 2, moistens, and condenses to form a mist group, and then enters the demister component 3 with the air flow. Due to the deflection effect of the guide plate in the demister component 3, the air flow forms a rotating airflow. Under the action of centrifugal force, the mist group and water droplets are thrown off to form a water film. After the dust and mist group are absorbed by the water film, they flow into the water collecting tank 35 along the inner wall with the water and flow out from the sewage outlet. The diluent filling component 2 of the utility model can cool the dust with higher temperature, and the formed water film can also absorb dust particles with smaller particle size, thereby improving the dust removal efficiency.

[0041] Further, such as Figure 3 and Figure 4 As shown, the air inlet mixing chamber 11 assembly 1 of this embodiment includes a mixing chamber 11, a filter 12, a filter bracket 13 and a filter support 14. The filter 12 and the filter bracket 13 are both arranged in the inner cavity of the mixing chamber 11. The filter 12 is used for preliminarily filtering the dust-containing gas. The filter 12 is fixed in the mixing chamber 11 by the filter bracket 14, and the filter 12 is installed in the filter bracket 13.

[0042] The filter screen 12 of this embodiment is preferably a stainless steel wire mesh. The mixing chamber 11 is welded with a flange plate. The filter screen 12 is installed close to the flange plate. The filter screen bracket 13 is against the surface of the filter screen 12. The base of the filter screen 12 squeezes the filter screen bracket 13 to prevent the filter screen 12 from moving. The base of the filter screen 12 is fixed to the outer flange of the mixing chamber 11 by bolts. An observation port 111 is provided on the outer surface of the mixing chamber 11. A sealing plate and a blind flange are installed on the observation port 111. The sealing plate and the blind flange are fixed to the flange seat of the observation port 111 of the mixing chamber 11 by bolts.

[0043] Further, such as Figure 5 and Figure 6 As shown, the diluent filling assembly 2 includes a connecting cylinder 21 and a spray pipe 22. The spray pipes 22 include two, which are in a cross shape. The two spray pipes 22 are connected at the intersection. The spray pipes 22 are welded in the connecting cylinder 21. A plurality of spray heads 221 are provided on the spray pipe 22. The spray heads 221 are facing the mixing chamber 11. The spray heads 221 are arranged at preset distances on the spray pipe 22. The connecting cylinder 21 is connected and communicated with the mixing chamber 11.

[0044] This embodiment preferably includes five spray heads 221, each spray pipe 22 has two spray heads 221, the intersection of the two spray pipes 22 has a spray head 221, the three end interfaces of the two spray pipes 22 have plugs 222, and the remaining end interface is a diluent interface 223 for receiving the diluent.

[0045] In this embodiment, the connecting cylinder 21 is further provided with an inspection port 211 , and the inspection port 211 is provided with an inspection cover 23 . A sewage discharge port 212 is provided on the side of the connecting cylinder 21 opposite to the inspection port 211 .

[0046] Furthermore, Figure 7 and Figure 8 As shown, the demister assembly 3 includes a demister barrel body 31 and a guide plate component. The demister barrel body 31 is connected to and communicated with the connecting cylinder 21. The guide plate component is arranged at one end where the demister barrel body 31 is connected to the connecting cylinder 21. The guide plate component includes an inner cover barrel 32, an outer cover barrel 33 and a swirl plate 34. The outer cover barrel 33 is installed in the demister barrel body 31, and the inner cover barrel 32 is installed in the outer cover barrel 33. The swirl plate 34 includes several blocks and is located between the inner cover barrel 32 and the outer cover barrel 33. The dust-laden gas passes through the gap between adjacent swirl plates 34.

[0047] A water collecting tank 35 is provided under the demister barrel body 31, and the demister barrel body 31 is connected to the water collecting tank 35, and a water collecting ring 36 and a water blocking ring 37 are provided on the inner wall of the demister barrel body 31 away from the end of the connecting cylinder 21. The water collecting ring 36 extends outward from the inner wall of the demister barrel body 31, and the water blocking ring 37 extends inward from the inner wall of the demister barrel body 31.

[0048] The water collecting ring 36 increases the area of ​​the water film and the amount of water collected. In this embodiment, there are two water collecting rings 36 , and the water blocking ring 37 is used to prevent water from flowing toward the air outlet connecting pipe 4 .

[0049] Furthermore, Figure 9 As shown, the air outlet connecting pipe 4 is a reducer with a flange. The size of the pipe opening is related to the air volume to be processed. The diameter of the outlet end of the air outlet connecting pipe 4 is preferably such that the wind speed is no more than 12 m / s.

[0050] In the description of the present invention, it should be noted that, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely for the convenience of describing the present invention and to simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0051] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model depending on the specific circumstances.

[0052] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A wet pre-dust removal device, characterized in that: include: Air inlet mixing chamber assembly, used to introduce dust-laden gas; a diluent filling assembly, connected to and in communication with the air inlet mixing chamber assembly, for spraying water mist into the dust-laden gas; The demister assembly is connected and communicated with the diluent filling assembly, and is used to form a rotating airflow. Under the action of centrifugal force, mist and water droplets are thrown onto the inner wall of the demister assembly to form a water film. Dust and mist are absorbed by the water film and flow along the inner wall with water into the water collection tank of the demister assembly and out through the sewage outlet; The air outlet connecting pipe is connected to and communicates with the demister assembly and is used to guide the cleaned air.

2. The wet pre-dust removal device according to claim 1, characterized in that: The air inlet mixing chamber assembly includes a mixing chamber and a filter screen. The filter screen is arranged in the inner cavity of the mixing chamber and is used for preliminarily filtering dust-laden gas.

3. The wet pre-dust removal device according to claim 2, characterized in that: The air inlet mixing chamber assembly further includes a filter bracket and a filter support. The filter bracket is disposed in the mixing chamber and is fixed by the filter support. The filter is installed in the filter bracket.

4. The wet pre-dust removal device according to claim 2, characterized in that: The diluent filling assembly includes a connecting cylinder and a spray pipe, the connecting cylinder is connected to and communicates with the mixing chamber, the spray pipe is installed in the connecting cylinder, and a plurality of spray heads are provided on the spray pipe, and the spray heads face the mixing chamber.

5. The wet pre-dust removal device according to claim 4, characterized in that: The spray pipes include two and are in a cross-shaped configuration. The spray pipes are connected at the cross-section, and the spray heads are arranged on the spray pipes at a preset distance.

6. The wet pre-dust removal device according to claim 4, characterized in that: The connecting cylinder is also provided with an inspection port, and the inspection port is provided with an inspection cover.

7. The wet pre-dust removal device according to claim 6, characterized in that: A sewage discharge port is provided on a side of the connecting cylinder opposite to the inspection port.

8. The wet pre-dust removal device according to claim 4, characterized in that: The demister assembly includes a demister barrel and a guide plate component. The demister barrel is connected and communicated with the connecting cylinder. The guide plate component is provided at one end where the demister barrel is connected to the connecting cylinder.

9. The wet pre-dust removal device according to claim 8, characterized in that: The guide plate component includes an inner cover barrel, an outer cover barrel and a swirl plate. The outer cover barrel is installed in the demisting barrel body, and the inner cover barrel is installed in the outer cover barrel. The swirl plate includes several pieces, which are arranged between the inner cover barrel and the outer cover barrel. The dust-laden gas passes through the gaps between the swirl plates.

10. The wet pre-dust removal device according to claim 8, characterized in that: A water collecting trough is provided below the demisting barrel body, the demisting barrel body is communicated with the water collecting trough, and a water collecting ring and a water blocking ring are provided on the end of the inner wall of the demisting barrel body away from the connecting cylinder. The water collecting ring extends outward from the inner wall of the demisting barrel body, and the water blocking ring extends inward from the inner wall of the demisting barrel body.

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