A combined atomizing dust removal device

Abstract

The present invention provides a combined atomizing dust removal device, comprising a box, wherein the interior of the box comprises a dust suction area and a pressure reduction area; the dust suction area is located above the pressure reduction area, the dust suction area is connected to the pressure reduction area through a partition, a dust suction port is opened on the side of the dust suction area, a through hole is arranged on the partition, the through hole is used to install a fan, and the fan sends the dust at the dust suction port into the pressure reduction area; the pressure reduction area has an opening on the side, a filter cloth is arranged at the opening on the side of the pressure reduction area, and the filter cloth is used to discharge the air inside the pressure reduction area. The adoption of this scheme greatly improves the dust removal effect, the dust removal rate reaches more than 80%, and the operation is simple, the cost is low, and there is basically no pollution to the surrounding environment.

Description

Technical Field

[0001] The invention relates to the field of dust removal, and in particular to a combined atomizing dust removal device. Background Art

[0002] In the prior art, a large amount of dust will be generated when workers dump grain into the grain unloader. If a large amount of dust is directly dispersed in the air, it will cause environmental pollution and even threaten the health of the workers. In order to solve the dust pollution problem, the prior art usually adopts methods such as hanging net dust control, closed side suction hood dust removal, fog cannon dust removal, and tap water network spray dust removal. However, either the cost is too high or the control effect is not ideal. How to achieve high-efficiency dust removal at a low cost is a problem that we urgently need to solve. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a combined atomizing dust removal device. By adopting this solution, the dust removal effect is greatly improved, the dust removal rate reaches more than 80%, and the operation is simple, the cost is low, and there is basically no pollution to the surrounding environment.

[0004] The technical solution adopted by the present invention is: a combined atomizing dust removal device, comprising a box body, wherein the interior of the box body comprises a dust suction area and a pressure reduction area;

[0005] The dust suction area is located above the depressurization area, the dust suction area is connected to the depressurization area through a partition, a dust suction port is opened on the side of the dust suction area, a through hole is provided on the partition, the through hole is used to install a fan, and the fan sends the dust at the dust suction port into the depressurization area;

[0006] The pressure reduction zone has a side opening, and a filter cloth is arranged at the side opening of the pressure reduction zone, and the filter cloth is used to discharge the air inside the pressure reduction zone.

[0007] When this scheme is in operation, a dust suction zone and a pressure reduction zone are sequentially arranged from top to bottom inside the box body, a dust suction port is opened on the side of the dust suction zone, and the dust suction zone is connected to the pressure reduction zone through a partition, and a through hole is opened on the partition, the through hole is a fan installation hole, and is used to install the fan. When the grain unloader starts to operate, the dust suction port in this device is arranged at the grain unloading position of the grain unloader, which is the main source of dust. At this time, the fan is started, and the fan generates suction, which can absorb dust from the dust suction port and send the dust to the pressure reduction zone below, so as to achieve the effect of reducing external dust. The side of the pressure reduction zone is opened, and a filter cloth is arranged at the opening. At this time, the dust entering the pressure reduction zone is continuously blown by the fan, and most of the air inside the pressure reduction zone will be discharged out of the box through the filter cloth, thereby reducing the pressure inside the pressure reduction zone, and the internal pressure is the same as the external pressure, so that the fan can continue to operate efficiently. Multiple openings can be arranged on both sides and the bottom of the pressure reduction zone, and filter cloths can be arranged at multiple openings to further achieve the pressure reduction effect;

[0008] This solution has high requirements for fans. Currently, the commonly used fan types are centrifugal fans, axial flow fans and mixed flow fans. Compared with the same power, centrifugal fans have high wind pressure but small air volume and high noise. Mixed flow fans are slightly inferior. Axial flow fans have low wind pressure but large air volume and low noise. Taking into account the requirements of low noise, low energy consumption and large air volume, this solution can be preferably selected as a 1.1 kW BT35-11 explosion-proof axial flow fan with a wind pressure of 470Pa, a speed of 2900 rpm, and a single-unit air volume of 9336m 3 / hour, which can fully meet the needs;

[0009] The selection of filter cloth in this scheme should meet the requirements of good air permeability, high strength, durability and easy maintenance. We use high-permeability dust filter cloth to seal the front, back and bottom of the pressure reduction box. When selecting filter cloth, we have tested five filter cloths of different materials, thicknesses and air permeabilities, including porous non-woven fabrics, 0.35 mm and 0.2 mm air primary filter cotton, polyester fiber polyester needle-punched non-woven fabrics and polyester 208 flannel. Ordinary porous non-woven fabrics are easy to age, and the pore size with good air permeability is generally large, which is easy to leak dust. The filtration effect of small pores and high density is poor. The primary filter cotton has a good filtering effect, but the material has a large porosity and is easy to hide dust and clog, which quickly reduces the air permeability and the attachments are not easy to clean. Moreover, it is too thin and has low strength and is easy to leak dust. The advantages of polyester fiber needle-punched non-woven fabrics are high strength, good filtering effect and no dust, but poor air permeability, which cannot be applied to the pressure reduction and dust removal of low-pressure equipment. 208 flannel cloth has one side of woven fabric and the other side of flannel. It has the advantages of both polyester fiber non-woven fabric and primary filter cotton, and can meet the requirements of good filtering effect, good air permeability and high strength. Finally, this scheme preferably uses 208 flannel cloth with a thickness of 2mm as the filter material.

[0010] Furthermore, a porous air uniforming plate A is arranged in the dust suction port, and the porous air uniforming plate A is used to average the wind speed at the dust suction port.

[0011] When this solution is in operation, the closer to the fan, the greater the wind speed, and the farther away from the fan, the smaller the wind speed, the large particles of dust far away from the fan cannot be sucked into the fan because the wind speed is too low. This solution sets a porous air uniforming plate at the dust suction port. The porous air uniforming plate can evenly distribute the air volume of each part of the dust suction port, so that the wind speed of each part of the entire dust suction port is basically the same, which can ensure that the dust suction effect at different positions of the grain unloading platform is basically the same, greatly improving the dust suction rate.

[0012] Furthermore, the suction port is tilted upward, and the upward tilt angle of the suction port matches the slope of the side plate of the inclined grain platform.

[0013] During the specific operation of this scheme, in order to prevent the grain unloading platform from being sucked into the box along with the dust due to the action of the fan when unloading grain, the dust suction port is arranged to be inclined upward, preferably inclined upward at 30 degrees. At this time, the dust suction port can act as a grain blocking plate, and the grain grains can rebound at the dust suction port, which can prevent the grain grains from rolling directly into the dust suction area and accumulating in the dust suction area or the suction reduction area; further, the upward inclination angle of the dust suction port matches the slope of the side plate of the inclined grain platform. At this time, the slope of the dust suction port is basically the same as the slope of the side plate of the grain unloading platform, which is conducive to the smooth flow of dust-containing airflow above the grain unloading platform to the dust suction area; further, the dust suction port is inclined upward, thereby raising the dust suction area, so that the pressure reduction area below has a larger storage space.

[0014] Furthermore, it also includes a filter cloth frame, a protective net and a plastic film, the filter cloth frame is used to fix the filter cloth, the protective net is arranged on the outside of the filter cloth frame, and the plastic film is arranged on the outside of the protective net.

[0015] When this solution is in operation, the filter cloth is fixed at the side opening of the pressure reduction zone through the filter cloth frame, and a protective net is arranged outside the filter cloth frame. The protective net surrounds the filter cloth, which can not only further fix the filter cloth but also prevent it from being damaged. A plastic film is arranged outside the protective net. The plastic film can block rain and prevent the filter cloth from being wetted by rain, which may weaken or lose its filtering function.

[0016] Furthermore, in order to improve the dust collection effect, it is configured as follows: there are multiple through holes, and a fan is provided at each through hole.

[0017] Furthermore, it also includes a soft air duct and an atomizing dust removal box, air outlets are provided at both ends of the depressurization zone, the spare air outlet at one end of the depressurization zone is sealed with a breathable sleeve, and the air outlet at the other end of the depressurization zone is connected to the atomizing dust removal box through a soft air duct;

[0018] The interior of the atomizing dust removal box includes a spraying area and a dust removal area arranged in sequence along the length direction of the dust removal box, and the pressure reduction area sends dust into the spraying area through a soft air duct, and an atomizing nozzle is arranged inside the spraying area;

[0019] The tail of the dust removal zone is open, and a dust reduction curtain is arranged at the tail of the dust removal zone, and the dust reduction curtain is used to settle the dust inside the dust removal zone.

[0020] When this solution is in operation, air outlets are provided at both ends of the pressure reduction zone, and the air outlet at one end of the pressure reduction zone is sealed by a breathable sleeve to further reduce the pressure, while the air outlet at the other end of the pressure reduction zone is connected to the atomizing dust removal box through a soft air duct, and the soft air duct is preferably a PVC soft air duct. At this time, under the continuous blowing of the fan, part of the dust in the pressure reduction zone will pass through the soft air duct into the interior of the atomizing dust removal box, further diverting the dust in the pressure reduction zone and reducing the pressure. After the dust enters the interior of the atomizing dust removal box, due to the high wind speed of the fan, the dust continues to be atomized under the continuous blowing of the fan. The inside of the dust removal box is blown forward, and when it passes through the spray area, the atomizing nozzles arranged on the inside of the spray area continuously spray water mist. Most of the dust and water mist adsorb each other, and then become heavier and fall down or attach to the inside of the box. A small part of the dust that is not adsorbed by the water mist enters the dust removal area under the continuous blowing of the fan. A dust suppression curtain is arranged at the tail of the dust removal area, and the dust suppression curtain is hung vertically. At this time, the dust suppression curtain has been completely wetted by the water mist. When the residual dust passes through the dust suppression curtain, it will be adsorbed on the dust suppression curtain or fall to the bottom of the dust removal area, thereby achieving the effect of secondary dust removal. The dust suppression curtain is preferably a double-layer sunshade net.

[0021] Furthermore, a plurality of water mist walls are arranged inside the spray area, each of the water mist walls is provided with a plurality of the atomizing nozzles, and each of the water mist walls is controlled individually.

[0022] When this scheme is in operation, in order to further improve the adsorption effect of water mist on dust, multiple water mist walls are set on the inside of the spray area. Dust needs to pass through all water mist walls to reach the dust removal area. Multiple atomizing nozzles are set on the inside of each water mist wall, preferably 4. Two atomizing nozzles are set on the top, and the windward side sprays downward at 45 degrees. Two atomizing nozzles are set at the bottom, and spray vertically upward to ensure that the dust and water mist can fully contact each other. Furthermore, in order not to waste water resources, each water mist wall is controlled separately, preferably by a valve, and one water mist wall is controlled by one valve. When there is less dust, only one water mist wall needs to be opened. When there is more dust, multiple water mist walls can be opened.

[0023] Furthermore, a porous air uniforming plate B is provided inside the atomizing dust removal box, and the dust in the atomizing dust removal box enters the spraying area through the porous air uniforming plate B.

[0024] When this scheme is in operation, it has been tested that the no-load wind speed of the diversion outlet in the pressure reduction zone reaches 5.5 / second. The wind speed of the diversion outlet will be even greater in the working state. If not controlled, the airflow entering the water mist dust removal box will quickly pass through the spray area, reducing the dust removal effect. A porous air uniforming plate B is set at the front end of the spray area. The porous air uniforming plate B can average and reduce the wind speed. At this time, the dust enters the spray area through the porous air uniforming plate B, and the dust can be fully adsorbed by the water mist.

[0025] Furthermore, it also includes a guide plate and a porous air uniforming plate C arranged inside the dust removal area, the height of the dust removal area is higher than the height of the spray area, the guide plate divides the dust removal area into a guide area and a dust reduction area, the guide area is connected to the upper end of the dust reduction area, one end of the porous air uniforming plate C is connected to the upper end of the guide plate, and the other end of the porous air uniforming plate C is connected to the upper end of the tail of the dust removal area, the porous air uniforming plate C is inclined, and the dust reduction curtain is connected to the lower surface of the porous air uniforming plate C.

[0026] When this scheme is in operation, the height of the dust removal zone is raised and higher than the spray zone. At this time, after the remaining dust enters the dust removal zone, the internal space becomes larger, the cross-sectional area becomes larger, the adsorption space of dust and water mist is increased, and the dust removal effect is further enhanced. A guide plate is provided inside the dust removal zone, and the guide plate further divides the dust removal zone into a guide zone and a dust reduction zone, and the guide zone is connected to the upper end of the dust reduction zone. At this time, after the remaining dust enters the dust removal zone, it is first guided by the guide zone, and the dust flows upward and enters the dust reduction zone. A porous uniform air plate C is also provided inside the dust removal zone. The porous uniform air plate C is inclined upward, one end is connected to the upper end of the guide plate, and the other end is connected to one end of the tail of the dust removal zone, and a dust reduction curtain is provided below the porous uniform air plate C, wherein the porous uniform air plate C and the dust reduction curtain form a dust reduction zone, at this time, the dust is settled through the contact between the porous uniform air plate C and the dust reduction curtain, wherein the porous uniform air plate C can further average and reduce the wind speed, thereby increasing the adsorption time of the dust and the dust reduction curtain.

[0027] Furthermore, in order to continuously discharge the water in which the dust has settled inside the atomizing dust removal box, it is configured as follows: the bottom of the atomizing dust removal box is open, and a water receiving tray is provided at the bottom opening of the atomizing dust removal box, and the water receiving tray is used to receive the settled water.

[0028] The present invention has the following beneficial effects:

[0029] This solution provides a combined atomization dust removal device. By adopting this solution, the dust removal effect is greatly improved, and the dust removal rate reaches more than 80%. It is also simple to operate, low in cost, and basically pollution-free to the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the structure of a box body of a combined atomizing dust removal device provided by the present invention;

[0031] Figure 2 A schematic diagram of the structure of an atomizing dust removal box of a combined atomizing dust removal device provided by the present invention;

[0032] Figure 3 A schematic structural diagram of a combined atomizing dust removal device provided by the present invention.

[0033] The reference numerals in the figure are: 1-box, 2-dust suction area, 3-pressure reduction area, 4-partition, 5-soft air duct, 6-atomizing dust removal box, 7-spray area, 8-dust removal area, 21-dust suction port, 22-porous uniform air plate A, 31-filter cloth, 32-filter cloth frame, 33-protective net, 34-plastic film, 41-through hole, 61-porous uniform air plate B, 62-water receiving tray, 71-atomizing nozzle, 81-dust reduction curtain, 82-porous uniform air plate C. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with embodiments.

[0035] Example: Figures 1 to 3 As shown, a combined atomizing dust removal device comprises a box body 1, wherein the interior of the box body 1 comprises a dust suction area 2 and a pressure reduction area 3;

[0036] The dust suction area 2 is located above the depressurization area 3, and the dust suction area 2 is connected to the depressurization area 3 through a partition 4. A dust suction port 21 is opened on the side of the dust suction area 2, and a through hole 41 is provided on the partition 4. The through hole 41 is used to install a fan, and the fan sends the dust at the dust suction port 21 into the depressurization area 3;

[0037] The pressure reduction zone 3 has an opening on the side thereof. A filter cloth 31 is arranged at the opening on the side thereof. The filter cloth 31 is used for discharging the air inside the pressure reduction zone 3 .

[0038] In this embodiment, a dust suction area 2 and a pressure reduction area 3 are sequentially arranged inside the box body 1 from top to bottom, a dust suction port 21 is opened on the side of the dust suction area 2, and the dust suction area 2 is connected to the pressure reduction area 3 through a partition 4, and a through hole 41 is opened on the partition 4. The through hole 41 is a fan installation hole for installing the fan. When the grain unloader starts to operate, the dust suction port 21 in the device is set at the grain unloading position of the grain unloader, which is the main source of dust. At this time, the fan is started, and the fan generates suction, which can absorb dust from the dust suction port 21 and send the dust into the lower In the pressure reduction zone of the side, the effect of reducing external dust is achieved, and the side of the pressure reduction zone is opened, and the filter cloth 31 is set at the opening. At this time, the dust entering the pressure reduction zone 3 is continuously blown by the fan, and most of the air inside the pressure reduction zone 3 will be discharged out of the box through the filter cloth 31, so that the pressure inside the pressure reduction zone 3 is reduced, and the internal pressure is the same as the external pressure, so that the fan can continue to operate efficiently. Multiple openings can be set on both sides and the bottom of the pressure reduction zone 3, and filter cloth 31 can be set at multiple openings to further achieve the pressure reduction effect;

[0039] The requirements for the fan in this embodiment are relatively high. Currently, the commonly used fan types are centrifugal fans, axial flow fans and mixed flow fans. Compared with the same power, the centrifugal fan has high wind pressure but small air volume and high noise. The mixed flow fan is slightly inferior. The axial flow fan has low wind pressure, but large air volume and low noise. Taking into account the requirements of low noise, low energy consumption and large air volume, this solution can preferably be a 1.1 kW BT35-11 explosion-proof axial flow fan with a wind pressure of 470Pa, a speed of 2900 rpm, and a single-machine air volume of 9336m 3 / hour, which can fully meet the needs;

[0040] In this embodiment, the selection of filter cloth 31 should be as good as possible in air permeability, high strength, durability and easy maintenance. We use high-air permeability dust filter cloth 31 to seal the front, back and bottom of the pressure reduction box. When selecting filter cloth 31, we have tested five filter cloths 31 of different materials, thicknesses and air permeabilities, including porous non-woven fabrics, 0.35 mm and 0.2 mm air primary filter cotton, polyester fiber polyester needle-punched non-woven fabrics and polyester 208 flannel. Ordinary porous non-woven fabrics are easy to age, and the pore size with good air permeability is generally large, which is easy to leak dust. The filtration effect of small holes and high density is poor. The primary filter cotton has a good filtering effect, but the material has a large porosity and is easy to hide dust and clog, which quickly reduces the air permeability and the attachments are not cleaned up. Moreover, it is too thin and has low strength and is easy to leak dust. The advantages of polyester fiber needle-punched non-woven fabrics are high strength, good filtering effect and no dust, but poor air permeability and cannot be used for pressure reduction and dust removal of low wind pressure equipment. 208 flannel cloth has one side of woven fabric and the other side of flannel. It has the advantages of both polyester fiber non-woven fabric and primary filter cotton, and can meet the requirements of good filtering effect, good air permeability and high strength. Finally, this scheme preferably uses 208 flannel cloth with a thickness of 2mm as the filter material.

[0041] In the present embodiment, the closer to the fan, the greater the wind speed, and the farther from the fan, the smaller the wind speed, the large particles of dust far away from the fan cannot be sucked into the fan due to the wind speed being too small. In the present embodiment, a porous air uniforming plate is arranged at the dust suction port 21. The porous air uniforming plate can average the wind speed at the dust suction port 21, so that the wind speed at the entire dust suction port 21 is basically the same, which can ensure that the dust suction effects at different positions of the grain unloading platform are basically the same, thereby greatly improving the dust suction rate.

[0042] In the present embodiment, in order to prevent the grain particles from being sucked into the box body 1 along with the dust due to the action of the fan when the grain unloading platform is unloading grain, the dust suction port 21 is arranged to be inclined upward, preferably inclined upward by 30 degrees. At this time, the dust suction port 21 can act as a grain blocking plate, and the grain particles can rebound at the dust suction port 21, which can prevent the grain particles from directly rolling into the dust suction area 2 and accumulating in the dust suction area 2 or the suction decompression area 3; further, the upward inclination angle of the dust suction port 21 matches the slope of the side plate of the inclined grain platform. At this time, the slope of the dust suction port 21 is basically consistent with the slope of the side plate of the grain unloading platform, which is conducive to the dust-containing airflow above the grain unloading platform to flow smoothly to the dust suction area 2; further, the dust suction port 21 is inclined upward, thereby raising the dust suction area 2, so that the decompression area 3 below has a larger storage space.

[0043] In this embodiment, the filter cloth 31 is fixed at the side opening of the step-down zone 3 through the filter cloth frame 32, and a protective net 33 is arranged outside the filter cloth frame 32, and the protective net 33 surrounds the filter cloth 31, which can not only play a further fixing effect, but also prevent the filter cloth 31 from being damaged, and a plastic film 34 is arranged outside the protective net 33. The plastic film 34 can play a rain-proof effect and is used to prevent the filter cloth 31 from being exposed to rain and causing the filtering function to be weakened or lost.

[0044] In this embodiment, in order to improve the dust collection effect, it is configured as follows: there are a plurality of through holes 41 , and a fan is disposed at each through hole 41 .

[0045] Furthermore, it also includes a soft air duct 5 and an atomizing dust removal box 6. Air outlets are provided at both ends of the depressurization zone 3. The air outlet at one end of the depressurization zone 3 is sealed with a breathable sleeve, and the air outlet at the other end of the depressurization zone 3 is connected to the atomizing dust removal box 6 through the soft air duct 5;

[0046] The atomizing dust removal box 6 includes a spraying area 7 and a dust removal area 8 arranged in sequence along the length direction of the dust removal box. The depressurization area 3 sends dust into the spraying area 7 through the soft air duct 5. An atomizing nozzle 71 is arranged inside the spraying area 7.

[0047] The tail of the dust removal zone 8 is open, and a dust reduction curtain 81 is provided at the tail of the dust removal zone 8 . The dust reduction curtain 81 is used to settle the dust inside the dust removal zone 8 .

[0048] In this embodiment, air outlets are provided at both ends of the pressure reduction zone 3, and the air outlet at one end of the pressure reduction zone 3 is sealed by a breathable sleeve, which further plays a role in reducing pressure, and the air outlet at the other end of the pressure reduction zone 3 is connected to the atomizing dust removal box 6 through a soft air duct 5, and the soft air duct 5 is preferably a PVC soft air duct 5. At this time, under the continuous blowing of the fan, part of the dust in the pressure reduction zone 3 will enter the inside of the atomizing dust removal box 6 through the soft air duct 5, further diverting the dust in the pressure reduction zone 3 and playing a role in relieving pressure; after the dust enters the inside of the atomizing dust removal box 6, due to the high wind speed of the fan, the dust continues to be blown into the inside of the atomizing dust removal box 6 under the continuous blowing of the fan. When being blown forward and passing through the spray area 7, the atomizing nozzle 71 arranged on the inner side of the spray area 7 continuously sprays water mist, wherein most of the dust and the water mist are adsorbed to each other, and then become heavy and fall down or attach to the inner side of the box body 1, and a small part of the dust that is not adsorbed by the water mist enters the dust removal area 8 under the continuous blowing of the fan, and a dust reduction curtain 81 is arranged at the tail of the dust removal area 8, and the dust reduction curtain 81 is suspended vertically. At this time, the dust reduction curtain 81 has been completely wetted by the water mist flushing, and the remaining dust will be adsorbed on the dust reduction curtain 81 or fall on the bottom of the dust removal area 8 when passing through the dust reduction curtain 81, thereby achieving the effect of secondary dust removal, wherein the dust reduction curtain 81 is preferably a double-layer sunshade net.

[0049] In this embodiment, in order to further improve the adsorption effect of water mist on dust, multiple water mist walls are set on the inner side of the spray area 7. The dust needs to pass through all the water mist walls to reach the dust removal area 8. Multiple atomizing nozzles 71 are set on the inner side of each water mist wall, preferably 4. Two atomizing nozzles 71 are set on the top, and the windward side sprays downward at 45 degrees. Two atomizing nozzles 71 are set at the bottom, and spray vertically upward to ensure that the dust and water mist can fully contact each other; further, in order not to waste water resources, each water mist wall is controlled separately, preferably by a valve, and one water mist wall is controlled by one valve. When the dust is less, only one water mist wall needs to be opened, and when the dust is more, multiple water mist walls can be opened.

[0050] In this embodiment, after testing, the no-load wind speed of the diversion outlet of the decompression zone 3 reaches 5.5 / second, and the wind speed of the diversion outlet will be even greater in the working state. If not controlled, the airflow entering the water mist dust removal box will quickly pass through the spray zone 7, reducing the dust removal effect. A porous air uniforming plate B61 is set at the front end of the spray zone 7. The porous air uniforming plate B61 can average and reduce the wind speed. At this time, the dust enters the spray zone 7 through the porous air uniforming plate B61, and the dust can be fully adsorbed by the water mist.

[0051] In this embodiment, the height of the dust removal zone 8 is raised and is higher than the spray zone 7. At this time, after the residual dust enters the dust removal zone 8, the internal space becomes larger, the cross-sectional area becomes larger, the adsorption space of dust and water mist is increased, and the dust removal effect is further enhanced. A guide plate is provided inside the dust removal zone 8. The guide plate further divides the dust removal zone 8 into a guide zone and a dust reduction zone, and the guide zone is connected to the upper end of the dust reduction zone. At this time, after the residual dust enters the dust removal zone 8, it is first guided by the guide zone, and the dust flows upward and enters the dust reduction zone. A porous air uniforming plate C82 is also provided inside the dust removal zone 8. The porous air uniforming plate C82 is tilted upward, one end of which is connected to the upper end of the guide plate, and the other end is connected to the tail end of the dust removal zone 8. A dust reduction curtain 81 is provided below the porous air uniforming plate C82, wherein the porous air uniforming plate C82 and the dust reduction curtain 81 form a dust reduction zone. At this time, the dust is settled through the contact between the porous air uniforming plate C82 and the dust reduction curtain 81, wherein the porous air uniforming plate C82 can further average and reduce the wind speed, thereby increasing the adsorption time of the dust and the dust reduction curtain 81.

[0052] In this embodiment, in order to continuously discharge the water in which dust has settled inside the atomizing dust removal box 6, it is configured as follows: the bottom of the atomizing dust removal box 6 is open, and a water receiving tray 62 is provided at the bottom opening of the atomizing dust removal box 6, and the water receiving tray 62 is used to receive the settled water.

[0053] Experimental data analysis:

[0054] 1. Cost analysis. The entire box 1 is outsourced, and the fan, pressure relief filter cotton, and power cord are purchased by ourselves, with a cost of about 13,000 yuan. The water mist dust removal box 6 has a simple structure and cheap materials. It can be made by a mechanic, and the cost is within 1,000 yuan, meeting the basic requirements of low cost, high efficiency and easy use.

[0055] 2. Dust removal effect test.

[0056] At present, the national air pollution index is based on the content of inhalable particulate matter per cubic meter of air (ie: PM2.5, unit: ug / m 3 ) is divided into 6 levels according to the standard, namely: Level 1 (excellent): PM2.5≤50; Level 2 (good): PM2.5≤100; Level 3 (slightly polluted): PM2.5≤150; Level 4 (mildly polluted): PM2.5≤200; Level 5 (moderately polluted): PM2.5≤300; Level 6 (severely polluted): PM2.5>300.

[0057] In order to test the dust removal effect of the equipment, we used the equipment for dust removal at the unloading platform of packaged grain and for dust removal in the wind tunnel of rice entering the warehouse, and determined the dust removal effect by the change of PM2.5 concentration detected at close range before and after the dust removal equipment was turned on. This was done in accordance with the provisions of GBZ / T 192.1-2007 "Determination of dust in workplace air" Appendix B.5.1.1: "Stations, docks, warehouses, vehicles and ships, etc., where goods are loaded and unloaded, shall each have one dust sampling point. When goods are conveyed by belts, one sampling point shall be set at each loading and unloading place" to determine the detection location.

[0058] Field test 1: unloading grain on unloading platform

[0059] This was to test the dust removal equipment's ability to control dust generated when unloading grain on the grain unloading platform. Since the dust content of different batches of grain varies, we selected two batches for on-site testing:

[0060] The first set of tests: Before the dust removal equipment was turned on, the on-site PM2.5 concentration was 300. After the dust removal equipment was turned on, the PM2.5 dropped to about 54. The air pollution index basically reached a good level, indicating that the dust removal effect was very good.

[0061] The second set of tests: Before the dust removal equipment was turned on, the on-site PM2.5 concentration was 320. After the dust removal equipment was turned on, the PM2.5 concentration dropped to about 62. The air pollution index basically reached a good level, indicating that the dust removal effect was very good.

[0062] The third set of tests: Before the dust removal equipment was turned on, the on-site PM2.5 concentration was 420. After the dust removal equipment was turned on, the PM2.5 concentration dropped to about 95. The air pollution index basically reached a good level, indicating that the dust removal effect was very good.

[0063] Field test 1: Electric blower to remove debris

[0064] The impurity removal blower mainly removes grain dust, grain husks, straw fragments and other light impurities through electric fan air selection. Since the dust and impurity collection device is a common high-permeability cloth bag, the dust concentration on site is relatively high, and the operation site is open, dust control is difficult, and the electric blower impurity removal on-site dust removal test is to test whether the dust removal equipment can achieve multi-purpose functions.

[0065] The fourth test: Before the dust removal equipment was turned on, the PM2.5 concentration on site exceeded 500 and went off the charts. After the dust removal equipment was turned on, the PM2.5 concentration on site was around 121, the air pollution index was slightly polluted, and the dust reduction was very large.

[0066] The fifth test: Before the dust removal equipment was turned on, the PM2.5 concentration on site exceeded 500 and went off the charts. After the dust removal equipment was turned on, the PM2.5 concentration on site was around 133, the air pollution index was slightly polluted, and the dust reduction was very large.

[0067] Since this system is mainly designed for grain unloading platforms, and the site of the impurity removal of the wind tube requires space to be reserved because workers need to pack the impurities, and the site is too open, the dust collection effect is poor. However, if measures are taken to restrict the site, such as building a shed, the dust collection effect will be better. The dust removal test on the impurity removal wind tube shows that this dust removal system can be used for multiple purposes.

[0068] After multiple trials on the grain unloading platform, it is proved that this system has a very good dust removal effect. If the air pollution index PM2.5 is less than 100, the dust removal effect of the grain unloading platform is 100%. The dust removal effect in other places such as the open place of wind tube dust removal is also more than 80%.

[0069] The dust sucked by the equipment mainly settles in the pressure reducing box below, and the rest enters the water mist dust removal box 1 through the air duct with the air flow, and is mixed with water mist for dust reduction. The dust removal effect of the water mist dust removal box 1 is good, and the dust concentration at the air outlet is at the maximum value of 110.

[0070] 4. Basic system parameters and test data

[0071] Main cabinet parameters

[0072]

[0073] Dust removal system test parameters

[0074]

[0075] Dust removal effect test data

[0076]

[0077] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A combined atomizing dust removal device, comprising a housing (1), characterized in that: The box body (1) includes a dust collection area (2) and a pressure reduction area (3); The dust suction zone (2) is located above the pressure reduction zone (3); the dust suction zone (2) is connected to the pressure reduction zone (3) via a partition (4); a dust suction port (21) is provided on the side of the dust suction zone (2); a through hole (41) is provided on the partition (4); the through hole (41) is used to install a fan; the fan sends dust at the dust suction port (21) into the pressure reduction zone (3); The pressure reduction zone (3) has a side opening, and a filter cloth (31) is arranged at the side opening of the pressure reduction zone (3), and the filter cloth (31) is used to discharge the air inside the pressure reduction zone (3); The dust suction port (21) is inclined upward, and the upward inclination angle of the dust suction port (21) matches the slope of the side plate of the inclined grain platform; It also includes a soft air duct (5) and an atomizing dust removal box (6), wherein both ends of the depressurization zone (3) are provided with air outlets, the air outlet at one end of the depressurization zone (3) is sealed with a breathable sleeve, and the air outlet at the other end of the depressurization zone (3) is connected to the atomizing dust removal box (6) via the soft air duct (5); The interior of the atomizing dust removal box (6) comprises a spraying area (7) and a dust removal area (8) arranged in sequence along the length direction of the dust removal box (6); the pressure reduction area (3) sends dust into the spraying area (7) through the soft air duct (5); and an atomizing nozzle (71) is arranged inside the spraying area (7); The dust removal zone (8) has an opening at the rear end, and a dust reduction curtain (81) is provided at the rear end of the dust removal zone (8), wherein the dust reduction curtain (81) is used to settle dust inside the dust removal zone (8).

2. A combined atomizing dust removal device according to claim 1, characterized in that: A multi-hole air-distributing plate A (22) is arranged in the dust suction port (21), and the multi-hole air-distributing plate A (22) is used to average the wind speed at the dust suction port (21).

3. A combined atomizing dust removal device according to claim 1, characterized in that: It also comprises a filter cloth frame (32), a protective net (33) and a plastic film (34), wherein the filter cloth frame (32) is used to fix the filter cloth (31), the protective net (33) is arranged outside the filter cloth frame (32), and the plastic film (34) is arranged outside the protective net (33).

4. A combined atomizing dust removal device according to claim 1, characterized in that: There are a plurality of through holes (41), and a fan is disposed at each through hole (41).

5. The combined atomizing dust removal device according to claim 1, characterized in that: A plurality of water mist walls are arranged inside the spray area (7), each of the water mist walls is provided with a plurality of atomizing nozzles (71), and each of the water mist walls is individually controlled.

6. A combined atomizing dust removal device according to claim 1, characterized in that: A porous air-distributing plate B (61) is provided inside the atomizing dust removal box (6), and dust in the atomizing dust removal box (6) enters the spraying area (7) through the porous air-distributing plate B (61).

7. The combined atomizing dust removal device according to claim 1, characterized in that: It also includes a guide plate (83) and a porous air uniforming plate C (82) arranged inside the dust removal zone (8), the height of the dust removal zone (8) being higher than the height of the spray zone (7), the guide plate (83) dividing the dust removal zone (8) into a guide zone (84) and a dust reduction zone (85), the upper ends of the guide zone (84) and the dust reduction zone (85) being connected, one end of the porous air uniforming plate C (82) being connected to the upper end of the guide plate (83), the other end of the porous air uniforming plate C (82) being connected to the upper end of the tail of the dust removal zone (8), the porous air uniforming plate C (82) being arranged obliquely, and the dust reduction curtain (81) being connected to the lower surface of the porous air uniforming plate C (82).

8. The combined atomizing dust removal device according to claim 1, characterized in that: The atomizing dust removal box (6) has an opening at the bottom, and a water receiving tray (62) is provided at the opening at the bottom of the atomizing dust removal box (6), wherein the water receiving tray (62) is used to receive sedimentation water.

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