Ship loading dust collecting and discharging system

Abstract

The utility model discloses a shipment dust collection and discharge system, a main conveying pipeline is connected to a bulk machine assembly for conveying fly ash, the top and the bottom of the bulk machine assembly are respectively connected to a bag-type dust collector through a primary dust pumping pipeline and a secondary dust pumping pipeline, the bag-type dust collector filters dusty gas, pumps the dusty gas to the atmosphere and collects fly ash, and the main conveying pipeline is used for conveying the fly ash. The pneumatic conveying assembly is located at the bottom of the bag-type dust collector, one end of the pneumatic conveying assembly is connected with the air inlet assembly, and collected fly ash is blown to the main conveying pipeline for repeated conveying. The positive-pressure concentrated-phase pneumatic conveying system serves as a dust collecting and discharging system, is flexible in arrangement, can adapt to complex terrain conditions, can be independently arranged and does not need to be integrated on ship loader main body equipment; the adaptive capacity is high, closed conveying is achieved, the device is suitable for most natural working conditions, and wide use requirements can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of ship loading dust removal, and particularly relates to a ship loading dust collection and ash discharging system. Background Art

[0002] Ship loading dust collection technology mainly refers to the technical measures taken to control and reduce dust diffusion during the process of loading bulk goods (such as coal, ore, cement clinker, etc.) onto ships at ports or terminals. These technologies are crucial for environmental protection, maintaining the health of workers, and improving operation efficiency. Commonly used dust collection and dust suppression technologies include spray dust suppression, foam dust suppression, and closed conveyor negative pressure dust collection.

[0003] With the strengthening of environmental protection regulations, the improvement of port operation efficiency requirements, and the concern for the health and safety of workers, the traditional open bulk cargo loading method has gradually been replaced by more advanced and environmentally friendly closed conveyor systems. Using closed conveyor pipes for material transfer can minimize dust emission during material transfer. This technology is based on the fluidization principle, and the airflow in the pipe is used to push the material to flow, while equipped with gas-solid separation devices and dust removal devices to ensure a clean environment.

[0004] Currently, the ship loading conveyor dust removal device generally consists of a dust collection pipeline, a bag filter, a dust collection hopper, and an ash discharging device for the hopper. Generally, the main dust collection and ash discharging equipment mainly uses feeding methods such as screw conveyors and star feeders to send the ash in the dust collection hopper to the main conveying pipeline (including ash conveying pipelines, conveying fluidized chutes, etc.), and then conveys and discharges it into the ship's hold.

[0005] Existing ship loading machine conveyor dust removal equipment usually has some limitations during use. It is highly restricted by the installation location, has a large weight, a complex structure, and high installation and maintenance costs; during the operation of existing equipment, the sealing is often not tight, resulting in gas back blowing into the dust collector, which not only affects the service life of the filter bags, but also increases the gas consumption, reduces the conveying efficiency, and even affects the normal operation of the entire ship loading equipment; conventional dust removal equipment needs to run continuously, with high energy consumption and serious wear. Summary of the Invention

[0006] Object of the Invention: To solve the technical problems proposed in the background art, the present invention requests to disclose a ship loading dust collection and ash discharging system.

[0007] Technical Solution: The ship loading dust collection and ash discharging system disclosed by the present invention includes a main conveying pipeline, a bulk loader assembly, a primary dust extraction pipeline, a secondary dust extraction pipeline, a bag filter, a pneumatic conveying component, and an air intake component;

[0008] The main conveying pipeline is connected to the bulk loader assembly for transporting fly ash. The top and bottom of the bulk loader assembly are respectively connected to the bag filter through the primary dust extraction pipeline and the secondary dust extraction pipeline. The bag filter filters the dust-containing gas and pumps it to the atmosphere, and collects the fly ash. The pneumatic conveying component is located at the bottom of the bag filter, and one end is connected to the air intake component, blowing the collected fly ash into the main conveying pipeline for repeated transportation.

[0009] Further, the bulk loader assembly includes a gas-solid separation device, a winch, a dust collection and discharge chute, and a dust collection and discharge head; the bottom of the gas-solid separation device is connected to the dust collection and discharge chute through the winch, and the dust collection and discharge head is located at the bottom of the dust collection and discharge chute.

[0010] Further, the dust collection and discharge chute is a telescopic structure, and the winch is combined to realize the vertical displacement of the dust collection and discharge head; the dust collection and discharge head is a discharge head structure with material level detection and negative pressure dust collection. The primary dust extraction pipeline is connected to the top of the gas-solid separation device to transport the exhausted gas after separation, and the secondary dust extraction pipeline is connected to the top of the dust collection and discharge chute to transport the dust generated during the falling process.

[0011] Further, air volume regulating valves are provided on the primary dust extraction pipeline and the secondary dust extraction pipeline.

[0012] Further, the bag filter includes a dust collection fan, a pulse air distribution valve, a steel structure body, a dust collection hopper, and a maintenance platform. The fly ash in the dust-containing gas is collected into the dust collection hopper after being filtered by the bag filter.

[0013] Further, the bottom of the bag filter is a dust collection hopper. The pneumatic conveying component is a dense-phase conveying device, including a blanking pipe connected to the outlet of the dust collection hopper, a shut-off valve and a conveying tank sequentially connected to the blanking pipe. The conveying tank is connected to the main conveying pipeline through an ash conveying pipe, and the other end of the ash conveying pipe is connected to the air intake component through an air intake pipe to input compressed air. An outlet valve is provided on the ash conveying pipe.

[0014] Further, the air intake component includes an air volume regulating valve, a control valve, and a check valve.

[0015] Beneficial effects: Compared with the prior art, the advantages of the present invention are as follows:

[0016] 1. Higher adaptability and flexibility: The present invention uses a positive-pressure dense-phase pneumatic conveying system as the dust collection and ash discharge system, which is flexibly arranged, can adapt to complex terrain conditions, can be independently arranged, and does not have to be integrated into the main equipment of the ship loader; it has strong adaptability, is hermetically conveyed, is suitable for most natural working conditions, and can meet a wide range of usage requirements;

[0017] 2. More effective dust control: By configuring multi-stage dust collection pipelines and dust exhaust pipelines, the present invention effectively controls dust diffusion and environmental pollution, and better meets the environmental protection requirements.

[0018] 3. More efficient energy utilization and lower energy consumption: The present invention uses a positive pressure dense phase pneumatic conveying device as the dust collection and ash discharging device of the system. During the operation of this device, it is tightly sealed, which can effectively prevent dust while reducing air volume consumption, and the dust discharging process is more environmentally friendly and efficient.

[0019] 4. Higher stability: The whole set of equipment of the present invention has a simple structure and is easy to operate. It does not use mechanical equipment with low efficiency such as feeders and screw conveyors, operates stably, and has low operation and maintenance costs.

[0020] 5. More advanced automatic and intelligent control: The present invention can, through an automatic control system and an identification module, sense and identify the size of the conveyed material volume to control the dust collection air volume, and use a level sensor to sense the ash volume in the ash hopper to adjust the dust discharging and conveying frequency, thereby improving efficiency, reducing energy consumption, improving the accuracy of operation, and reducing the occurrence of human errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the front view of the present invention;

[0022] Figure 2 is the top view of the present invention;

[0023] Figure 3 is the schematic structural diagram of the bag filter of the present invention;

[0024] Figure 4 is the schematic structural diagram of the air inlet assembly of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] The present invention will be further described below with reference to the drawings and embodiments.

[0026] As shown in Figure 1 and 2 The ship loading dust collection and ash discharging system includes a main conveying pipeline 1, a bulk loader assembly 2, a primary dust extraction pipeline 3, a secondary dust extraction pipeline 4, a bag filter 5, a pneumatic conveying assembly 6, and an air inlet assembly 7.

[0027] Fly ash is loaded onto a ship and transported to the ship's hold through the main conveying pipeline 1 by the loading equipment. The main conveying pipeline 1 is connected to the bulk loader assembly 2 for transporting fly ash. The top and bottom of the bulk loader assembly 2 are respectively connected to the bag filter 5 through the primary dust extraction pipeline 3 and the secondary dust extraction pipeline 4. The bag filter 5 filters the dust-containing gas and pumps it to the atmosphere, and collects the fly ash. The pneumatic conveying assembly 6 is located at the bottom of the bag filter 5 and is connected to the air inlet assembly 7 at one end, and blows the collected fly ash into the main conveying pipeline 1 for repeated transportation.

[0028] The bulk loader assembly 2 includes a gas-solid separation device 201, a winch 202, a dust collection and discharge chute 203, and a dust collection and discharge head 204. The bottom of the gas-solid separation device 201 is connected to the dust collection and discharge chute 203 through the winch 202, and the dust collection and discharge head 204 is located at the bottom of the dust collection and discharge chute 203.

[0029] The dust collection and discharge chute 203 is a telescopic structure, and in combination with the winch 202, it realizes the vertical displacement of the dust collection and discharge head 204, which can meet the real-time change of the material level during the whole operation process; the dust collection and discharge head 204 is a discharge head structure with material level detection and negative pressure dust collection. The primary dust extraction pipe 3 is connected to the top of the gas-solid separation device 201 to convey the exhausted gas after separation, which is filtered by the bag filter 5 and then pumped to the atmosphere. The separated fly ash falls into the cabin through the dust collection and discharge head 204. The secondary dust extraction pipe 4 is connected to the top of the dust collection and discharge chute 203 to convey the dust generated during the falling process, thereby realizing dust collection and dust suppression during the whole conveying process.

[0030] The primary dust extraction pipe 3 and the secondary dust extraction pipe 4 are provided with air volume regulating doors 8, including but not limited to pneumatic flow regulating valves, electric flow regulating valves, etc., which can adjust the dust extraction air volume according to the size of the conveyed ash volume to meet the efficient dust collection under different working conditions. The primary dust extraction pipe 3 and the secondary dust extraction pipe 4 are both hose structures, which can be flexibly bent according to the on-site requirements to meet the requirements of the complex and changeable cabin position changes on site.

[0031] As Figure 3 shown, the bag filter 5 includes a dust collection fan 501, a pulse air distribution valve 502, a steel structure body 503, a dust collection hopper 504, and a maintenance platform 505. The fly ash in the dust-containing gas is filtered by the bag filter 5 and collected into the dust collection hopper 504.

[0032] The pneumatic conveying component 6 is a dense-phase conveying device, including a blanking pipe 601 connected to the outlet of the dust collection hopper 504, a shut-off valve 602 and a conveying tank 603 connected to the blanking pipe 601 in sequence. The conveying tank 603 is connected to the main conveying pipe 1 through an ash conveying pipe 604. The other end of the ash conveying pipe 604 is connected to the air inlet component 7 through an air inlet pipe 605 to input compressed air. An outlet valve 606 is provided on the ash conveying pipe 604, and the valves all adopt pneumatic doors or electric doors with good sealing performance. The forms include but are not limited to swing arm valves, plug valves, knife gate valves, etc. Good sealing performance can avoid the phenomenon of ash return and air return during the conveying process. At the same time, the dense-phase conveying frequency can be adjusted in real time according to the on-site working conditions by using the control system, and can be flexibly regulated to reduce the system energy consumption.

[0033] As Figure 4As shown, the intake assembly 7 includes a gas volume regulating valve 701, a control valve 702, and a check valve 703.

[0034] When the material level in the dust collection hopper 504 reaches the set level, the shut-off valve 602 opens, and the collected fly ash enters the conveying tank 603. After the feeding is completed, the shut-off valve 602 is closed, the discharge valve 606 is opened, and the control valve 702 is opened. The fly ash in the conveying tank 603 is blown into the ash conveying pipeline 604 by compressed air, and then enters the main conveying pipeline 1 and is conveyed into the cabin, completing the dust collection and dust discharging process.

Claims

1. A ship loading dust collection and ash discharging system, characterized in that: It includes a main conveying pipeline (1), a bulk loader assembly (2), a primary dust extraction pipeline (3), a secondary dust extraction pipeline (4), a bag filter (5), a pneumatic conveying component (6), and an air intake component (7). The main conveying pipeline (1) is connected to the bulk loader assembly (2) for transporting fly ash. The top and bottom of the bulk loader assembly (2) are respectively connected to the bag filter (5) through the primary dust extraction pipeline (3) and the secondary dust extraction pipeline (4). The bag filter (5) filters the dust-containing gas and pumps it to the atmosphere, and collects the fly ash. The pneumatic conveying component (6) is located at the bottom of the bag filter (5), and one end is connected to the air intake component (7), blowing the collected fly ash into the main conveying pipeline (1) for repeated transportation.

2. The ship loading dust collection and ash discharging system according to claim 1, wherein: The bulk loader assembly (2) includes a gas-solid separation device (201), a winch (202), a dust collection and discharge chute (203), and a dust collection and discharge head (204). The bottom of the gas-solid separation device (201) is connected to the dust collection and discharge chute (203) through the winch (202), and the dust collection and discharge head (204) is located at the bottom of the dust collection and discharge chute (203).

3. The ship loading dust collection and ash discharging system according to claim 2, characterized in that: The dust collection and discharge chute (203) is a telescopic structure, and the vertical displacement of the dust collection and discharge head (204) is realized in combination with the winch (202). The dust collection and discharge head (204) is a discharge head structure with material level detection and negative pressure dust collection. The primary dust extraction pipeline (3) is connected to the top of the gas-solid separation device (201) to transport the exhausted gas after separation. The secondary dust extraction pipeline (4) is connected to the top of the dust collection and discharge chute (203) to transport the dust generated during the falling process.

4. The ship loading dust collection and ash discharging system according to claim 1, characterized in that: Air volume regulating valves (8) are provided on the primary dust extraction pipeline (3) and the secondary dust extraction pipeline (4).

5. The ship loading dust collection and ash discharging system according to claim 1, characterized in that: The bag filter (5) includes a dust collection fan (501), a pulse air distribution valve (502), a steel structure body (503), a dust collection hopper (504), and a maintenance platform (505). The fly ash in the dust-containing gas is collected into the dust collection hopper (504) after being filtered by the bag filter (5).

6. The ship loading dust collection and ash discharging system according to claim 1, characterized in that: The bottom of the bag filter (5) is the dust collection hopper (504). The pneumatic conveying component (6) is a dense-phase conveying device, including a feed pipe (601) connected to the outlet of the dust collection hopper (504), a shut-off valve (602), and a conveying tank (603) connected to the feed pipe (601) in sequence. The conveying tank (603) is connected to the main conveying pipeline (1) through an ash conveying pipeline (604). The other end of the ash conveying pipeline (604) is connected to the air intake component (7) through an air intake pipeline (605) to input compressed air. An outlet valve (606) is provided on the ash conveying pipeline (604).

7. The ship loading dust collection and ash discharging system according to claim 1, wherein: The air intake component (7) includes a gas volume regulating valve (701), a control valve (702), and a check valve (703).

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