Smoke treatment device
Patent Information
- Application Number
- CN202522319758.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-10-31
AI Technical Summary
这种方式一方面对惰性气氛及点火源控制的可靠性要求极高，若在收集、转运、存储期间惰性气氛失效，则极易发生爆燃事故，造成生命、财产损失；另一方面，在专用处理站进行倾倒时，亦会产生大量扬尘，或需要专用的额外防尘系统来防止扬尘
[0017]本实用新型提供了一种烟尘处理装置，包括除尘箱体、暂存桶以及气流输送装置；除尘箱体上设置有与除尘箱体内部贯通的尘气通入管以及气体排出管；除尘箱体置于暂存桶上部并与暂存桶相连通；暂存桶底部设置有排出口；气流输送装置与暂存桶的排出口相连通。本实用新型将尘气通入管通入的烟尘经除尘箱体除尘后形成灰渣，直接送入暂存桶并通过气流输送装置直接排出。一方面气流输送装置向暂存桶内的灰渣提供动力，促使其流动，便于后续的收集或进一步处理；另一方面，气流输送装置所形成的气流对暂存桶的排出口有一定的冲击，避免暂存桶的排出口因灰渣而形成拥堵，提升了灰渣的处理效率。同时，本实用新型通过气流输送装置还可以将惰化剂直接送入除尘箱体或在除尘箱体中形成扬尘环境，用于惰化整个除尘装置内部的高活性粉尘，促使惰化剂与烟尘进行充分的混合并形成灰渣，大大降低了灰渣的反应活性，使其在空气中也难以点燃，安全程度更高。此外，本实用新型所提供的烟尘处理装置还包括对捕集的烟尘进行湿化处理，避免大量活泼烟尘积聚、避免烟尘转运过程中出现扬尘，大大降低高活性烟尘处理的危险性，提高了除尘装置的环境友好度、安全性。况且，本实用新型所提供的烟尘处理装置对废渣的处理成本也得到了降低，同时除尘装置对其它安全措施要求也不必那么严苛，普适性更强，且易于在已有的常规除尘器上部署。
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Figure CN224822068U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of additive manufacturing and relates to a dust treatment device, particularly a dust treatment device for dust generated in additive manufacturing. Background Technology
[0002] In certain industries or working conditions, such as additive manufacturing, dust collection devices are needed to capture relatively reactive or extremely light fine dust. Cleaning such dust from these devices can easily generate large amounts of airborne dust, which has adverse effects on the surrounding environment and human health. Furthermore, the airborne reactive dust can easily cause dust explosions.
[0003] In existing technologies, dust collection devices primarily employ dry transfer processing for the collected flue gas. This involves thoroughly mixing the flue gas with an inert agent under inert gas protection, followed by collection, transfer, and storage. Ignition sources are strictly controlled, and the ash bins temporarily storing the flue gas are transferred to a dedicated treatment station for further processing. This method places extremely high demands on the reliability of the inert atmosphere and ignition source control. If the inert atmosphere fails during collection, transfer, and storage, a deflagration accident can easily occur, causing loss of life and property. Furthermore, the dumping process at the dedicated treatment station generates a large amount of dust, requiring a dedicated additional dust control system. Additionally, during collection, the varying particle sizes of the ash slag formed after the inert agent mixes with the flue gas can clog collection devices or pipelines, causing collection difficulties, reducing work efficiency, and potentially leading to other safety accidents. Utility Model Content
[0004] In order to solve the above-mentioned technical problems in the background art, the present invention provides a dust treatment device that can effectively improve work efficiency and safety.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A dust treatment device, characterized in that: the dust treatment device includes a dust collection box, a temporary storage tank, and an air conveying device; the dust collection box is provided with a dust gas inlet pipe and a gas outlet pipe that communicate with the interior of the dust collection box; the dust collection box is placed on top of the temporary storage tank and is connected to the temporary storage tank; the bottom of the temporary storage tank is provided with an outlet; the air conveying device is connected to the outlet of the temporary storage tank.
[0007] The aforementioned airflow conveying device includes a power source, an air supply pipe, and a conveying pipe; the power source is connected to both the air supply pipe and the conveying pipe; the conveying pipe is connected to the outlet of the temporary storage tank; and the air supply pipe is connected to the temporary storage tank from the top.
[0008] The aforementioned power source is a pump, a fan, or a gas tank storing compressed gas; when the power source is a gas tank storing compressed gas, the airflow conveying device further includes a pressure reducing device installed on the gas supply pipe, the pressure reducing device being a pressure reducing valve or a throttle valve.
[0009] The aforementioned dust treatment device also includes an ash discharge device; the ash discharge device includes an ash discharge pipe and a jet pipe; the outlet of the temporary storage tank is connected to the ash discharge pipe; the ash discharge pipe is connected to the jet pipe; the jet pipe extends into the dust collection box.
[0010] The aforementioned dust treatment device includes an ash discharge pipe and an inerting device connected to the ash discharge pipe; the inerting device includes a dust collection bin containing dust removal liquid; an exhaust pipe is provided at the top of the dust collection bin; a drain pipe is provided on the side or bottom of the dust collection bin; and the ash discharge pipe is connected to the dust collection bin.
[0011] The aforementioned inerting device also includes a partition or labyrinth baffle disposed inside the dust collection bin; the partition extends from the inner wall of the dust collection bin into the interior of the dust collection bin, and there are one or more partitions, and when there are multiple partitions, the multiple partitions are arranged alternately.
[0012] The aforementioned inerting device also includes an exhaust valve installed on the exhaust pipe and a drain valve installed on the drain pipe; the exhaust valve, drain valve, and conveying valve are all butterfly valves, ball valves, slide gate valves, gate valves, or unloading valves.
[0013] The aforementioned dust treatment device also includes a dust and gas purification treatment device installed inside the dust collector; the dust collector is filled with an inert agent; the dust and gas inlet pipe is connected to the gas outlet pipe through the dust and gas purification treatment device.
[0014] The aforementioned dust and gas purification device includes a filter element and a back-blowing device; the dust and gas inlet pipe is connected to the gas outlet pipe through the filter element; the back-blowing device is provided with an air outlet; the air outlet is opposite to the filter element.
[0015] The aforementioned dust treatment device also includes an ash discharge valve disposed between the dust collection box and the temporary storage tank; the ash discharge valve is a butterfly valve, ball valve, slide gate valve, gate valve, or discharge valve.
[0016] The advantages of this utility model are:
[0017] This invention provides a dust treatment device, including a dust collection chamber, a temporary storage bin, and an air conveying device. The dust collection chamber is equipped with a dust-gas inlet pipe and a gas outlet pipe that communicate with the interior of the chamber. The dust collection chamber is positioned above and connected to the temporary storage bin. An outlet is located at the bottom of the temporary storage bin. The air conveying device is connected to the outlet of the temporary storage bin. In this invention, the dust introduced through the dust-gas inlet pipe is filtered by the dust collection chamber to form ash, which is then directly fed into the temporary storage bin and discharged directly through the air conveying device. On one hand, the air conveying device provides power to the ash in the temporary storage bin, promoting its flow and facilitating subsequent collection or further processing. On the other hand, the airflow generated by the air conveying device has a certain impact on the outlet of the temporary storage bin, preventing blockage due to ash and improving the ash treatment efficiency. Meanwhile, this invention can also directly deliver the inerting agent into the dust collector chamber or create a dust-generating environment within the dust collector chamber through an airflow conveying device. This inerting effect is used to inert the highly reactive dust inside the entire dust collector, promoting thorough mixing of the inerting agent and the dust to form ash residue. This significantly reduces the reactivity of the ash residue, making it difficult to ignite in the air and thus enhancing safety. Furthermore, the dust treatment device provided by this invention includes humidification treatment of the collected dust, preventing the accumulation of large amounts of reactive dust and avoiding dust generation during dust transfer. This greatly reduces the danger of handling highly reactive dust and improves the environmental friendliness and safety of the dust collector. Moreover, the dust treatment device provided by this invention also reduces the cost of waste residue treatment, and the requirements for other safety measures are less stringent, making it more universal and easier to deploy on existing conventional dust collectors. Attached Figure Description
[0018] Figure 1 This is a simplified structural diagram of the dust treatment device provided by this utility model;
[0019] Figure 2 This is a schematic diagram of the optimized structure of the dust treatment device provided by this utility model;
[0020] Figure 3 This is a preferred structural diagram of the dust treatment device provided by this utility model;
[0021] in:
[0022] 1-Dust inlet pipe; 2-Gas outlet pipe; 3-Filter element; 4-Dust collector; 5-Fum; 6-Ash discharge valve; 7-Pressure reducing device; 8-Power source; 9-Temporary storage tank; 10-Conveying valve; 11-Drain valve; 12-Dust collection tank; 13-Maze baffle; 14-Exhaust valve; 15-Exhaust pipe; 16-Pulse jet pipe. Detailed Implementation
[0023] See Figure 1This utility model provides a dust treatment device, including a dust collection box 4, a temporary storage tank 9, and an air conveying device. The dust collection box 4 is equipped with a dust gas inlet pipe 1 and a gas outlet pipe 2 that communicate with the interior of the dust collection box 4. The dust collection box 4 is placed on top of and connected to the temporary storage tank 9. An outlet is provided at the bottom of the temporary storage tank 9. The air conveying device is connected to the outlet of the temporary storage tank 9. The principle of this utility model is that the dust 5 introduced through the dust gas inlet pipe 1 is dusted by the dust collection box 4 to form ash, which is directly sent to the temporary storage tank 9 and discharged directly through the air conveying device. On the one hand, the air conveying device provides power to the ash in the temporary storage tank 9, promoting its flow and facilitating subsequent collection or further processing; on the other hand, the airflow generated by the air conveying device has a certain impact on the outlet of the temporary storage tank 9, preventing the outlet from becoming clogged due to ash, thus improving the ash treatment efficiency.
[0024] See Figure 1 For example, the pneumatic conveying device used in this utility model includes a power source 8, an air supply pipe, and a conveying pipe; the power source 8 is connected to both the air supply pipe and the conveying pipe; the conveying pipe is connected to the outlet of the temporary storage tank 9; the air supply pipe is connected to the top of the temporary storage tank 9. The conveying pipe provides power to the ash and slag inside the temporary storage tank 9, promoting its flow and facilitating subsequent collection or further processing. Simultaneously, the airflow in the conveying pipe impacts the outlet of the temporary storage tank 9 to prevent blockage due to ash and slag. Furthermore, this utility model also supplies air to the temporary storage tank 9 through the air supply pipe, which impacts the ash and slag inside the temporary storage tank 9 downwards, accelerating its flow and further improving collection efficiency.
[0025] For example, the power source 8 used in this utility model is a pump, a fan, or a gas tank storing compressed gas. For example, the compressed gas can be a low-activity gas such as compressed argon or compressed nitrogen. When the power source 8 is a gas tank storing compressed gas, the airflow conveying device also includes a pressure reducing device 7 installed on the gas supply pipe. The pressure reducing device 7 is a pressure reducing valve, a throttle valve, or any device with pressure reducing or throttling function in the prior art.
[0026] See Figure 2To facilitate the discharge of ash and slag from the outlet of the temporary storage tank 9, the dust treatment device of this invention also includes an ash and slag discharge device; the ash and slag discharge device includes an ash and slag discharge pipe and a blowpipe 16; the outlet of the temporary storage tank 9 is connected to the ash and slag discharge pipe; the ash and slag discharge pipe is connected to the blowpipe 16; the blowpipe 16 extends into the dust collection box 4; preferably, the opening of the blowpipe 16 in the dust collection box 4 faces the filter element 3 of the dust collection box 4, or faces any direction that can disperse the inert agent. The outlet of the blowpipe 16 faces upward, and a valve to control the opening and closing of the blowpipe can be optionally added to the blowpipe 16, but it is not necessary and has no fundamental impact on the principle of this invention. On the one hand, before dust collection begins, inert gas can be introduced into the inert agent in the dust collector 14 through the power source 8 and the blow pipe 16, causing the inert agent in the dust collector 14 to form dust and adhere to the dust collector 14, especially to the filter element of the dust collector 14. At this time, the dust 5 introduced by the dust gas inlet pipe 1 is fully mixed with the dust collector 14 in the dust environment, so as to complete the encapsulation or adhesion of the inert agent to the dust 5. On the other hand, the inerting agent can be temporarily stored in the storage tank 9 beforehand. The inerting agent is pumped into the dust collector 14 through the power source 8, the outlet of the storage tank 9 and the blow pipe 16, so that the inerting agent in the dust collector 14 forms dust and adheres to the dust collector 14, especially to the filter element of the dust collector 14. At this time, the dust 5 introduced by the dust gas inlet pipe 1 is fully mixed with the dust collector 14 in the dust environment, so as to complete the encapsulation or adhesion of the inerting agent to the dust 5.
[0027] See Figure 3 As a preferred embodiment, the dust treatment device provided by this utility model includes an ash discharge pipe and an inerting device connected to the ash discharge pipe. Exemplarily, the inerting device can be a liquid inerting device, in which case the liquid inerting device includes a dust collection bin 12 storing dust removal liquid; an exhaust pipe 15 is provided at the top of the dust collection bin 12; a drain pipe is provided on the side or bottom of the dust collection bin 12; and an extension pipe of the drain pipe is connected to the dust collection bin 12. The ash discharge pipe enters the dust collection bin 12. Since the dust collection bin 12 stores dust removal liquid (exemplarily, the dust removal liquid can be water for conventional dust, and oil or other liquids for dust that is reactive with water), it can wet the ash. The airflow mixed with the ash escapes from the dust removal liquid in the dust collection bin 12 and is finally discharged through the exhaust pipe 15. See also... Figure 3To further block or allow fine ash particles carried in the airflow to escape, the inerting device used in this invention also includes a baffle or labyrinth baffle 13 disposed within the dust collection bin 12. The baffle or labyrinth baffle 13 is used to block water and residual dust carried out by the gas. For example, the baffle extends from the inner wall of the dust collection bin 12 into the interior of the dust collection bin 12; there are one or more baffles, and when there are multiple baffles, they are arranged alternately. For example, the inerting device used in this invention also includes an exhaust valve 14 disposed on the exhaust pipe 15 and a drain valve 11 disposed on the drain pipe; the exhaust valve 14, the drain valve 11, and the conveying valve 10 are all butterfly valves, ball valves, slide gate valves, gate valves, or unloading valves.
[0028] See Figure 1 , Figure 2 as well as Figure 3 The dust treatment device provided by this utility model also includes a dust purification device disposed inside the dust collector 4; the dust collector 4 is filled with an inert agent, which mixes evenly with the dust to prevent the dust from reacting violently and burning or exploding, and can also serve as a pre-coating for the filter element 3 to protect it. Any device meeting the above conditions can be used as an inert agent in this utility model, preferably calcium carbonate powder. The inert agent can be added directly to the dust collector 4 in any way, or added to the temporary storage tank 9. As a preferred option, in this utility model, the inert agent is preferentially added to the temporary storage tank 9. For example, the inerting agent is added to the temporary storage tank 9. The working method is as follows: the valve between the dust collector 4 and the temporary storage tank 9 is kept in the isolation state, and the inerting agent is added into the temporary storage tank 9. At the same time, inert gas is introduced through the power source 8. The inert gas pressurizes the inside of the temporary storage tank 9 through the air supply pipe, so that the inerting agent falls into the conveying pipe below through the outlet at the bottom of the temporary storage tank 9. It is then blown into the dust collector 4 by the inert gas introduced by the power source 8 through the blow pipe 16, and a dust environment is formed inside the dust collector 4. Then, it is evenly covered to the filter element 3, forming a thick inerting agent protective layer on the filter element 3. Then, the dust gas inlet pipe 1 is opened, and the dust 5 is sent into the dust collector 4 through the dust gas inlet pipe 1. The dust 5 mixes with the inerting agent inside the dust collector 4 and is filtered by the filter element 3. For example, an inert agent is added to the dust collector 4. Before dust removal, inert gas is introduced through the power source 8. The inert gas is blown into the dust collector 4 through the conveying pipe and the blow pipe 16 and directly impacts the inert agent inside the dust collector 4, causing the inert agent to form a dust-generating environment inside the dust collector 4. Then, it evenly covers the filter element 3, forming a thick inert agent protective layer on the filter element 3. Then, the dust gas inlet pipe 1 is opened, and the dust 5 is sent into the dust collector 4 through the dust gas inlet pipe 1. The dust 5 mixes with the inert agent inside the dust collector 4 and is filtered by the filter element 3.
[0029] The dust inlet pipe 1 is connected to the gas outlet pipe 2 via a dust purification treatment device. For example, the dust purification treatment device includes a filter element 3 and a back-blowing device; the dust inlet pipe 1 is connected to the gas outlet pipe 2 via the filter element 3; the back-blowing device is equipped with an air outlet; the air outlet is opposite to the filter element 3. The filter element 3 is equipped with a back-blowing device, which can blow away the ash and residue formed by the dust 5 and inert agent adhering to the filter element 3 from the surface of the filter element 3, causing the ash and residue to fall into the dust collection box 4. For example, the back-blowing device can also be replaced by mechanical scraping and / or mechanical vibration, as long as it can effectively remove the dust and inert agent from the surface of the filter element.
[0030] The dust treatment device also includes an ash discharge valve 6 installed between the dust collection box 4 and the temporary storage tank 9; the ash discharge valve 6 is a butterfly valve, ball valve, slide gate valve, gate valve or discharge valve.
[0031] See Figure 3 The specific working principle of the dust treatment device provided by this utility model is as follows:
[0032] 1) The dust 5 enters the cavity of the dust collector 4 through the dust inlet pipe 1, is filtered by the filter element 3 of the dust collector 4, and is discharged through the gas outlet pipe 2. The dust 5 adheres to the filter element 3 and is blown off to the bottom of the dust collector 4 by the back-blowing device;
[0033] 2) After the ash discharge valve 6 is opened and the ash falls into the temporary storage tank 9, the ash discharge valve is closed.
[0034] 3) When the conveying valve 10 and the exhaust valve 14 are opened, the power source 8 is started. The airflow provided by the power source conveys the smoke and dust to the dust collection bin 12 through the bottom of the temporary storage bin 9. The pressure or flow rate of the gas leading to the top of the temporary storage bin 9 is adjusted by the pressure reducing device 7, thereby adjusting the amount of smoke and dust conveyed.
[0035] 4) After the compressed gas provided by the power source 8 carries the smoke and dust into the dust collection bin 12, most of the smoke and dust is captured by the liquid in the dust collection bin. A small amount of escaped smoke and dust and water vapor are blocked back by the labyrinth baffle 13. Then the clean gas is discharged from the dust collection bin 12 through the exhaust pipe 15.
[0036] 5) Once the liquid in the dust collection bin 12 is saturated, that is, the dust content in the liquid reaches a certain concentration, close the conveying valve 10 and the exhaust valve 14, and transfer the dust collection bin to the waste treatment station.
[0037] 6) Open the drain valve 11 to discharge the waste liquid in the dust collection bin 12, add clean liquid through the exhaust valve 14, put the dust collection bin 12 back into the dust removal device, and continue working.
Claims
1. A dust treatment device, characterized in that: The dust treatment device includes a dust collection box (4), a temporary storage tank (9), and an air conveying device; the dust collection box (4) is provided with a dust gas inlet pipe (1) and a gas outlet pipe (2) that communicate with the interior of the dust collection box (4); the dust collection box (4) is placed on the upper part of the temporary storage tank (9) and is connected to the temporary storage tank (9); the bottom of the temporary storage tank (9) is provided with an outlet; the air conveying device is connected to the outlet of the temporary storage tank (9).
2. The dust treatment device according to claim 1, characterized in that: The air delivery device includes a power source (8), an air supply pipe and a delivery pipe; the power source (8) is connected to the air supply pipe and the delivery pipe respectively; the delivery pipe is connected to the outlet of the temporary storage tank (9); the air supply pipe is connected to the temporary storage tank (9) from the top.
3. The dust treatment device according to claim 2, characterized in that: The power source (8) is a pump, a fan or a gas tank storing compressed gas; when the power source (8) is a gas tank storing compressed gas, the airflow conveying device also includes a pressure reducing device (7) installed on the gas supply pipe, the pressure reducing device (7) being a pressure reducing valve or a throttle valve.
4. The dust treatment device according to claim 3, characterized in that: The dust treatment device also includes an ash discharge device; the ash discharge device includes an ash discharge pipe and a blow pipe (16); the outlet of the temporary storage tank (9) is connected to the ash discharge pipe; the ash discharge pipe is connected to the blow pipe (16); the blow pipe (16) extends into the dust collection box (4).
5. The dust treatment device according to claim 4, characterized in that: The ash discharge device includes an ash discharge pipe and an inerting device connected to the ash discharge pipe; the inerting device includes a dust collection bucket (12) storing dust removal liquid; an exhaust pipe (15) is provided on the top of the dust collection bucket (12); a drain pipe is provided on the side or bottom of the dust collection bucket (12); the ash discharge pipe is connected to the dust collection bucket (12).
6. The dust treatment device according to claim 5, characterized in that: The inerting device also includes a partition or a labyrinth baffle (13) disposed inside the dust collection bin (12); the partition extends from the inner wall of the dust collection bin (12) into the interior of the dust collection bin (12), and there are one or more partitions, and when there are multiple partitions, the multiple partitions are arranged alternately.
7. The dust treatment device according to claim 6, characterized in that: The inerting device also includes an exhaust valve (14) installed on the exhaust pipe (15) and a drain valve (11) installed on the drain pipe; the exhaust valve (14), the drain valve (11) and the conveying valve (10) are all butterfly valves, ball valves, slide gate valves, gate valves or unloading valves.
8. The dust treatment apparatus according to any one of claims 1-7, characterized in that: The dust treatment device also includes a dust purification treatment device installed inside the dust removal box (4); the dust removal box (4) is filled with an inert agent; the dust inlet pipe (1) is connected to the gas outlet pipe (2) through the dust purification treatment device.
9. The dust treatment device according to claim 8, characterized in that: The dust and gas purification device includes a filter element (3) and a back-blowing device; the dust and gas inlet pipe (1) is connected to the gas outlet pipe (2) through the filter element (3); the back-blowing device is provided with a blower; the blower is opposite to the filter element (3).
10. The dust treatment device according to claim 9, characterized in that: The dust treatment device also includes an ash discharge valve (6) disposed between the dust removal box (4) and the temporary storage tank (9); the ash discharge valve (6) is a butterfly valve, ball valve, slide gate valve, gate valve or unloading valve.