A negative pressure closed dust suppression device for superfine slag powder long transportation

Abstract

The utility model provides a kind of superfine mineral slag micro powder long transport's negative pressure closed dust suppression device, including air conveying chute, mineral powder chute, finished product bucket elevator, bag type powder collector, dust collecting pipe, negative pressure pipe, the inlet end of the air conveying chute is used to input mineral slag micro powder, the outlet end of the air conveying chute is connected to the inlet of the mineral powder chute, the air conveying chute is downwardly inclined from inlet end to outlet end, the outlet of the mineral powder chute is connected to the inlet of the finished product bucket elevator, the dust collecting pipe connects the finished product bucket elevator and the bag type powder collector, the bag type powder collector absorbs the dust raising of the finished product bucket elevator, the bag type powder collector forms negative pressure in the air conveying chute by the negative pressure pipe, and the outlet of the bag type powder collector is connected to the air conveying chute. The utility model guarantees the dust suppression effect of superfine mineral slag micro powder in long distance transportation process.

Description

Technical Field

[0001] This utility model relates to the field of slag processing technology, specifically to a negative pressure enclosed dust suppression device for long-distance transport of ultrafine slag powder. Background Technology

[0002] The fineness obtained by grinding is greater than or equal to 420 μm. 2 During long-distance transportation of ultrafine slag powder (kg / a), problems such as malfunctions in the upstream grinding process or uneven discharge often lead to severe dust generation and pipeline blockages during the transport phase. This not only causes material accumulation and blockages, affecting the production process, but also impacts the working environment and endangers the health of on-site operators. Especially for ultrafine powders, traditional dust collection methods are difficult to achieve efficient collection and are prone to secondary dust generation. Therefore, a closed negative pressure dust suppression device with a reasonable structure, high dust suppression efficiency, and stable operation is needed to ensure dust suppression during long-distance transportation of ultrafine slag powder, while also facilitating the storage and collection of ultrafine dust in emergencies and system shutdowns.

[0003] Therefore, this utility model provides a negative pressure enclosed dust suppression device for long-distance transportation of ultrafine slag powder to achieve the above-mentioned objective. Utility Model Content

[0004] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a closed dust suppression device that can improve the dust suppression effect.

[0005] This utility model provides a negative pressure closed-loop dust suppression device for long-distance transport of ultrafine slag powder, comprising an air conveying chute, a slag powder chute, a finished product bucket elevator, a bag filter, a dust collection pipe, and a negative pressure pipe. The inlet end of the air conveying chute is used to input slag powder, and the outlet end of the air conveying chute is connected to the inlet of the slag powder chute. The air conveying chute slopes downward from the inlet end to the outlet end. The outlet of the slag powder chute is connected to the inlet of the finished product bucket elevator. The dust collection pipe connects the finished product bucket elevator and the bag filter. The bag filter absorbs the dust generated by the finished product bucket elevator. The bag filter forms a negative pressure in the air conveying chute through the negative pressure pipe, and the outlet of the bag filter is connected to the air conveying chute.

[0006] Preferably, one end of the dust collection pipe is connected to the inlet of the bag filter, and the negative pressure pipe is connected to the dust collection pipe.

[0007] Preferably, the negative pressure pipe has a multi-segment structure, which is connected to different parts of the air conveying chute, and the multi-segment structure of the negative pressure pipe is connected to the dust collection pipe after the flow converges.

[0008] Preferably, the outlet of the bag-type dust collector is connected to the air conveying chute via an ash discharge pipe, and the ash discharge pipe is equipped with an ash discharge valve.

[0009] Preferably, the air conveying chute is straight or curved.

[0010] Preferably, it also includes a blower device, which includes a sloping trough fan and a sloping trough steel pipe. The sloping trough steel pipe is located on the bottom side of the air conveying sloping trough, and the sloping trough fan conveys sloping trough air to the air through the sloping trough steel pipe.

[0011] Preferably, the inclined groove fan is connected to the inclined groove steel pipe via a corrugated flexible hose.

[0012] Preferably, the inclined steel pipe is provided with a plurality of branch pipes, and the outlets of the plurality of branch pipes face the bottom side of the air conveying inclined chute.

[0013] Preferably, each of the plurality of branch pipes is provided with a manual butterfly valve.

[0014] Preferably, the air conveying chute is provided with a breathable cloth at the position corresponding to the plurality of branch pipes.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The negative pressure enclosed dust suppression device for long-distance transportation of ultrafine slag powder provided by this utility model integrates material guiding, dust suppression and collection functions. It has a reasonable structure, high dust suppression efficiency and stable operation, ensuring the dust suppression effect of ultrafine slag powder during long-distance transportation. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of a negative pressure enclosed dust suppression device for long-distance transport of ultrafine slag powder according to an embodiment of this utility model.

[0017] In the picture, 1- Inclined chute fan, 2- Corrugated hose, 3- Breathable cloth, 4- Manual butterfly valve, 5- Air conveying chute, 6- Inclined chute steel pipe, 7- Negative pressure pipe, 8- Mineral powder chute, 9- Finished product bucket elevator, 10- Dust collection pipe, 11- Bag dust collector, 12- Ash discharge valve. Detailed Implementation

[0018] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0019] This invention provides a negative pressure enclosed dust suppression device for long-distance transportation of ultrafine slag powder, which integrates material guiding, dust suppression, and collection functions. It is suitable for scenarios where the front-end grinding process fails or the output is uneven, ensuring the dust suppression effect of ultrafine slag powder during long-distance transportation.

[0020] like Figure 1 As shown, the negative pressure closed dust suppression device for long-distance transport of ultrafine slag powder in this embodiment includes an air conveying chute 5, a slag powder chute 8, a finished product bucket elevator 9, and a bag dust collector 11. Ultrafine slag powder is input at the inlet end of the air conveying chute 5, and the slag powder enters the slag powder chute 8 through the air conveying chute 5. The slag powder in the slag powder chute 8 then enters the finished product bucket elevator 9 and is finally output through the finished product bucket elevator 9. The bag dust collector 11 can form a negative pressure in the air conveying chute 5 and absorb the dust generated during the transport process.

[0021] The air conveying chute 5 slopes downwards from its inlet to its outlet, allowing the slag powder to flow within it. The air conveying chute 5 is typically a long structure, enabling long-distance transport of the slag powder. The air conveying chute 5 can be straight or curved.

[0022] The ore powder chute 8 connects the outlet end of the air conveying chute 5 and the inlet end of the finished product bucket elevator 9, and is usually located at the lower part of the finished product bucket elevator 9, feeding slag powder from the lower part of the finished product bucket elevator 9.

[0023] To suppress dust emission from the air conveying chute 5, this embodiment creates a negative pressure within the slag powder channel. Specifically, a dust collection pipe 10 is installed at the top of the finished product bucket elevator 9, and the dust collection pipe 10 is connected to the inlet of the bag filter 11; negative pressure pipes 7 are connected to different parts of the air conveying chute 5, and the negative pressure pipes 7 converge and then connect to the dust collection pipe 10. Under the action of the bag filter 11, multiple locations of the air conveying chute 5 can be subjected to relay suction, so that each section can maintain a stable micro-negative pressure state, limiting the escape of dust.

[0024] The baghouse dust collector 11 can create a slight negative pressure within the air conveying chute 5, and simultaneously absorb dust from the air conveying chute 5, the mineral powder chute 8, and the finished product bucket elevator 9, thus playing a dust removal role. The outlet of the baghouse dust collector 11 is connected to the air conveying chute 5 via a dust discharge pipe, returning the collected dust to the air conveying chute 5 for further transport. A dust discharge valve 12 is installed on the dust discharge pipe, enabling the periodic discharge of the collected dust.

[0025] To improve the flow effect of slag powder in the air conveying chute 5, this embodiment also includes a blower device, which specifically includes a chute blower 1 and a chute steel pipe 6. The chute steel pipe 6 is located on the bottom side of the air conveying chute 5. The chute blower 1 blows air into the chute steel pipe 6, and the air from the chute steel pipe 6 is then blown into the air conveying chute 5. The blower physically drives the ultrafine dust to flow continuously, avoiding the accumulation of material at key locations such as the bends of the air conveying chute 5.

[0026] Specifically, the inclined sluice fan 1 is connected to the inclined sluice steel pipe 6 via a corrugated flexible hose 2, which can mitigate the impact of fan vibration on the pipeline. Multiple branch pipes are installed on the inclined sluice steel pipe 6, with the outlets of the branch pipes facing the bottom of the air conveying inclined sluice 5, allowing the air blown by the inclined sluice fan 1 to be directed towards the air conveying inclined sluice 5 through these branch pipes. At the corresponding positions on the bottom of the air conveying inclined sluice 5 and the branch pipes, there is a breathable cloth 3. The air blows the breathable cloth 3, causing it to vibrate and lift the slag powder, which is then conveyed downwards along the slope of the inclined sluice. Each branch pipe is equipped with a manual butterfly valve 4, which allows for control and adjustment of the blowing status in different areas.

[0027] This utility model discloses a negative pressure closed dust suppression device for long-distance transport of ultrafine slag powder. In the closed conveying chute, it does not rely solely on end dust removal, but integrates negative pressure suction devices in sections throughout the entire process. These devices form a stable micro-negative pressure environment in the chute, so that the direction of dust diffusion is opposite to the direction of airflow, fundamentally inhibiting dust from escaping from any possible gaps.

[0028] This utility model addresses the needs of long-distance, multi-directional conveying by employing a manual butterfly valve with an elastic sealing element and using a breathable fabric of flexible composite material in key parts of the conveying chute. Through the physical action of air blowing, the ultrafine dust is continuously flowed, preventing material accumulation at critical locations such as bends.

[0029] This invention addresses the issue of long-distance air conveying chutes by adding a bag-type dust collector recovery system. A negative pressure branch pipe connection point is installed at intervals, and these branch pipes are connected in parallel to the main negative pressure duct. In this way, the entire conveying line no longer relies on suction at a single end, but instead uses relay suction from multiple intermediate points, ensuring that each section maintains a stable micro-negative pressure state. This guarantees that from the starting point to the end point, the air pressure at any point in the pipeline is always lower than the external atmospheric pressure, preventing dust from escaping.

[0030] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A negative pressure enclosed dust suppression device for long-distance transport of ultrafine slag powder, characterized in that, The system includes an air conveying chute, a mineral powder chute, a finished product bucket elevator, a bag filter, a dust collection pipe, and a negative pressure pipe. The inlet end of the air conveying chute is used to input slag powder, and the outlet end of the air conveying chute is connected to the inlet of the mineral powder chute. The air conveying chute slopes downward from the inlet end to the outlet end. The outlet of the mineral powder chute is connected to the inlet of the finished product bucket elevator. The dust collection pipe connects the finished product bucket elevator and the bag filter. The bag filter absorbs the dust emitted by the finished product bucket elevator. The bag filter creates a negative pressure in the air conveying chute through the negative pressure pipe, and the outlet of the bag filter is connected to the air conveying chute.

2. The negative pressure enclosed dust suppression device for long-distance transport of ultrafine slag powder as described in claim 1, characterized in that, One end of the dust collection pipe is connected to the inlet of the bag filter, and the negative pressure pipe is connected to the dust collection pipe.

3. The negative pressure enclosed dust suppression device for long-distance transport of ultrafine slag powder as described in claim 2, characterized in that, The negative pressure pipe has a multi-segment structure, which is connected to different parts of the air conveying chute. The multi-segment structure of the negative pressure pipe converges and then connects to the dust collection pipe.

4. The negative pressure enclosed dust suppression device for long-distance transport of ultrafine slag powder as described in claim 1, characterized in that, The outlet of the bag-type dust collector is connected to the air conveying chute via an ash discharge pipe, and an ash discharge valve is provided on the ash discharge pipe.

5. The negative pressure enclosed dust suppression device for long-distance transport of ultrafine slag powder as described in claim 1, characterized in that, The air conveying chute can be straight or curved.

6. The negative pressure enclosed dust suppression device for long-distance transport of ultrafine slag powder as described in claim 1, characterized in that, It also includes a blower device, which includes a sloping trough fan and a sloping trough steel pipe. The sloping trough steel pipe is located on the bottom side of the air conveying sloping trough, and the sloping trough fan conveys sloping trough air to the air through the sloping trough steel pipe.

7. The negative pressure enclosed dust suppression device for long-distance transport of ultrafine slag powder as described in claim 6, characterized in that, The inclined groove fan is connected to the inclined groove steel pipe via a corrugated flexible hose.

8. The negative pressure enclosed dust suppression device for long-distance transport of ultrafine slag powder as described in claim 6, characterized in that, The inclined steel pipe is provided with several branch pipes, and the outlets of the several branch pipes face the bottom side of the air conveying inclined chute.

9. The negative pressure enclosed dust suppression device for long-distance transport of ultrafine slag powder as described in claim 8, characterized in that, Each of the branch pipes is equipped with a manual butterfly valve.

10. The negative pressure enclosed dust suppression device for long-distance transport of ultrafine slag powder as described in claim 8, characterized in that, The air conveying chute is provided with a breathable cloth at the position corresponding to the branch pipes.

Images