Powder transfer system

Abstract

The utility model discloses a powder transfer system, which comprises an unloading part and a split charging part, the unloading part comprises an unloading bin, an ash bucket positioned below the unloading bin, a first frame body covering the outer side of the unloading bin, and a bag-type dust collector and a screw elevator which are arranged on the first frame body; and the split charging part comprises a second frame body, and a silencer, a water dust removal device and an air conveying chute which are fixedly mounted on the second frame body. By adopting the technical scheme, the dust removal system and the noise elimination system are separated and the layout is optimized, so that the bloated degree of equipment is reduced, and the powder transfer system is convenient to construct and overhaul.

Description

Technical Field

[0001] The utility model relates to a powder transfer system, belonging to the technical field of container unloading and railway systems. Background Art

[0002] In containerized rail transport of powders, powder transshipment is a crucial step in cargo distribution. Powders are shipped to a transshipment base via containers, where they are unpacked (unloaded) from upstream containers. The powders are then loaded onto distribution vehicles for downstream transport. Efficient and rapid powder transshipment is crucial for improving rail transport efficiency. The applicant's prior Chinese patent document CN217349895U (publication date September 2, 2022) provides a powder filling device and a container transfer station. For example, the applicant's prior Chinese patent document CN114715690A (publication date July 8, 2022) provides a container unpacking system, a container transfer station and a railway transportation system. For example, the applicant's prior Chinese patent document CN221216186U (publication date June 25, 2024) also provides a powder lifting mechanism, a container unpacking device and a powder transfer system. All of them integrate a screw conveyor into the unpacking device. While unloading the upstream material, the powder in the unloading bin can be lifted and transported to the powder filling device or the buffer box by the screw conveyor before being packed to the downstream vehicle. In the current layout, the dust removal and silencer systems for the unloading unit are integrated into the unloading hopper, resulting in a cumbersome structure and significant inconvenience in construction and maintenance. Furthermore, the installation of the powder filling unit and buffer tank also increases the overall transfer system footprint and material consumption. Furthermore, the entire powder transfer system is heavy, and the ash hopper, the structural foundation of the entire structure, is primarily constructed of steel and located above ground, compromising structural stability. This requires an inconvenient ramp to raise the container height during unloading. Furthermore, to reduce dust spillage during container unloading, an air curtain is typically installed at the discharge port. For example, the applicant's prior Chinese patent application, CN217349960U (published September 2, 2022), provides an air curtain assembly and container unloading device. The air curtain assembly includes an air curtain blower, an air outlet, and an air curtain duct connected between the air curtain blower and the air outlet. The air outlet can be installed at the discharge port of the unloading silo to form an air curtain at the discharge port. When the container dumps powder into the unloading silo, the air curtain prevents dust from escaping. Existing air curtain assemblies require a separate air curtain blower, increasing costs. Utility Model Content

[0003] Therefore, the purpose of the present invention is to overcome the defect of the relatively bloated structure of the unpacking device in the above-mentioned prior art, and to provide a powder transfer system, in which a first frame and a second frame fixedly connected to each other are arranged to separately carry the bag dust collector, muffler and water dust removal device of the dust removal system, and at the same time, a passage for transport vehicles to pass through is arranged under the second frame. On the one hand, the bloated original structure is avoided, making construction and maintenance more convenient, and on the other hand, the overall structure is more reasonable and occupies a smaller area.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a powder transfer system, including a discharge part and a filling part, the discharge part includes a discharge bin, an ash hopper located below the discharge bin, a first frame covering the outside of the discharge bin, and a bag dust collector and a spiral elevator arranged on the first frame, the front side of the discharge bin is provided with a discharge port, the spiral elevator is located outside the discharge bin and at the rear side of the discharge bin, the feed pipe of the spiral elevator is vertically inserted downward into the ash hopper, the upper part of the spiral elevator is fixed on the first frame, the discharge bin is provided with a dust removal port, and the dust removal port is connected to the bag dust collector through a dust removal pipeline. ; The packaging part includes a second frame and a muffler, a water dust removal device and an air chute fixedly mounted on the second frame. A channel for transport vehicles to pass through is provided below the second frame. The second frame is fixed to the rear side of the first frame. One end of the air chute is connected to the outlet of the conveying pipe, and the other end is inclined downward toward the rear side of the first frame to extend to the channel. A discharge port is provided on the air chute and vertically above the channel, and a powder bulk loader extending vertically downward is connected to the discharge port; the bag dust collector is connected to the muffler and the water dust removal device in sequence through a dust removal pipeline.

[0005] An air curtain device is provided on the discharge port, and the air curtain device includes an air outlet body, and the air outlet body can blow air at the discharge port to form an air curtain; the air curtain device is connected to the exhaust end of the water dust removal device through an air supply pipeline.

[0006] There are multiple discharge ports arranged in parallel, and each discharge port is also provided with a rolling door device.

[0007] The ash hopper is provided with a concrete foundation and is partially buried below ground level.

[0008] A material incoming channel is also provided on the front side of the discharge port, supports are provided on both sides of the material incoming channel, and an arched ceiling is provided on the top.

[0009] A plurality of the channels are arranged side by side below the second frame, each of the discharge ports is further provided with a valve, and pneumatic gate valves are provided between adjacent discharge ports.

[0010] The first frame is also provided with stairs for workers to climb up.

[0011] A dust cover is provided on the second frame, and the dust cover covers the air delivery chute.

[0012] By adopting the above technical solution, the powder transfer system of the present invention has the following beneficial effects compared with the prior art:

[0013] 1. By separating the bag dust collector, muffler and water dust removal device in the dust removal system and optimizing their layout, the equipment is reduced in bulk and is easier to construct and maintain.

[0014] 2. The powder filling device and buffer box are cancelled, and multiple discharge ports are directly set on the air conveying chute for filling, which reduces the system's footprint and reduces the material tonnage.

[0015] 3. Multiple discharge ports are set on the air conveying chute, and are equipped with pneumatic gate valves and independently controllable valves set on the discharge ports, which can quickly and flexibly carry out powder packaging through each powder bulk loader separately, thereby improving the transfer efficiency.

[0016] 4. An air curtain device is installed at the discharge port, and the air curtain device is connected to the exhaust end of the water dust removal device through an air supply pipeline, so that part of the air filtered by the water dust removal device is discharged into the atmosphere, and part of it is returned to the air curtain device through the air supply pipeline, providing an air source for the air curtain device, and there is no need to additionally configure an air curtain fan for the air curtain device.

[0017] 5. The hopper is semi-buried below ground level, and its foundation can be constructed of cement concrete, reducing floor space and strengthening the overall system's structural foundation. The height of the discharge port is also lowered, making it more suitable for reverse unloading of containers. Stairs facilitate access for operators to inspect and maintain the equipment. Multiple discharge ports are arranged in parallel and equipped with rolling shutters, increasing the system's flexibility and adaptability to meet diverse material requirements. Furthermore, a dust cover is installed on the second frame to prevent dust from escaping during tanker truck filling, which could cause environmental problems. Dust raised during the filling process is collected within the dust cover and filtered through a dust removal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the first embodiment of the powder transfer system of the present utility model.

[0019] Figure 2 Schematic diagram of the assembly structure of the dust removal system and the unloading bin.

[0020] Figure 3 It is a side view of the assembly structure of the dust removal system and the unloading silo.

[0021] Figure 4 This is a three-dimensional diagram of the assembly structure of the dust removal system and the unloading silo.

[0022] Figure 5 This is a schematic diagram of the assembly structure of the discharge bin, spiral elevator and air delivery chute in Example 1.

[0023] Figure 6 This is a three-dimensional diagram of the assembly structure of the discharge bin, spiral elevator and air delivery chute in Example 1.

[0024] Figure 7 This is a structural diagram of the incoming material channel.

[0025] Figure 8 This is a structural diagram of the first frame in Example 1.

[0026] Figure 9 Schematic diagram of the structure of the second frame in Example 1.

[0027] Figure 10 for Figure 6 A partial enlarged view of part A.

[0028] Figure 11 It is a left view of embodiment 1.

[0029] Figure 12 It is a right view of embodiment 1.

[0030] Figure 13 It is a top view of the first embodiment.

[0031] Figure 14 This is an axonometric view of Example 1.

[0032] Figure 15 This is a front view of the second embodiment of the powder transfer system of the present utility model.

[0033] Figure 16 This is a schematic diagram of the assembly structure of the discharge bin, spiral elevator and air delivery chute in Example 2.

[0034] Figure 17 It is a left view of embodiment 2.

[0035] Figure 18 It is a right side view of embodiment 2.

[0036] Figure 19 It is a top view of the second embodiment.

[0037] Figure 20 This is the axonometric drawing of Example 2.

[0038] In the figure: 1. Unloading bin; 2. Ash hopper; 3. First frame; 4. Bag dust collector; 5. Screw elevator; 51. Feed pipe; 6. Unloading port; 7. Air curtain device; 71. Air supply pipe; 8. Rolling door device; 9. Second frame; 10. Muffler; 11. Water dust removal device; 12. Air delivery chute; 13. Powder bulk loader; 14. Gate; 16. Container; 17. Arched ceiling; 18. Stairs; 19. Dust cover; 100. Unloading section; 200. Packing section; 300. Passageway; 400. Incoming channel; 500. Tanker. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below through the accompanying drawings and specific implementation methods.

[0040] Example 1:

[0041] like Figures 1-10 As shown, a powder transfer system of the present invention includes a discharge part 100 with the first frame 3 as the installation base and a sub-packaging part 200 with the second frame 9 as the installation base.

[0042] The discharge part 100 includes a discharge bin 1 , an ash hopper 2 located below the discharge bin 1 , a first frame 3 covering the outside of the discharge bin 1 , and a bag dust collector 4 and a spiral elevator 5 arranged on the first frame 3 .

[0043] The front side of the unloading bin 1 is provided with a plurality of unloading ports 6 arranged side by side. In this embodiment, there are three unloading ports 6. Each unloading port 6 can independently correspond to an incoming container to dump powder into the unloading bin 1. The three unloading ports 6 can operate simultaneously. An air curtain device 7 is provided at the door of the unloading port 6. During operation, the air curtain device 7 can blow air at the door position to prevent dust from overflowing. The air curtain device includes an air outlet body, and the air outlet body can blow air at the unloading port to form an air curtain. A rolling door device 8 is provided on each of the unloading ports 6. When only part of the unloading ports 6 are used for unloading, the other unloading ports 6 are closed by the rolling door device 8.

[0044] The screw elevator 5 is located outside the unloading bin 1 and at the rear side of the unloading bin 1. The feed pipe 51 of the screw elevator 5 is vertically inserted downward into the ash hopper 2. The upper part of the screw elevator 5 is fixed on the first frame 3. A dust removal port is provided in the unloading bin 1, and the dust removal port is connected to the bag dust collector 4 through a dust removal pipeline.

[0045] The subpackaging section 200 includes a second frame 9 and a muffler 10 , a water dust removal device 11 , and an air delivery chute 12 fixedly mounted on the second frame 9 .

[0046] The bag dust collector 4 is connected to the silencer 10 and the water dust removal device 11 in sequence through the dust removal pipeline to form a dust removal system. During operation, the dust raised in the unloading bin 1 is sucked and filtered by the bag dust collector 4. The filtered air enters the water dust removal device 11 after passing through the silencer 10. The water dust removal device 11 filters the air again and then discharges it into the atmosphere through the exhaust port. As a further improvement, the air curtain device 7 is connected to the exhaust end of the water dust removal device 11 through the air supply pipeline 71. Compared with the existing technology, in this embodiment, the filtered clean air can be partially returned to the air curtain device 7 to provide it with an air source. There is no need to set up an additional air curtain fan, which also improves the utilization rate of the existing equipment. By separating the water dust removal device 11 and the silencer 10 from the unloading part 100, the structure is optimized, the bloatedness of the equipment is reduced, and it is convenient for construction and maintenance.

[0047] Beneath the second frame 9 are multiple, parallel passages 300 for transport vehicles. One end of the pneumatic chute 12 is connected to the upper portion of the conveying pipe 51, while the other end extends obliquely downward from the second frame 9, spanning multiple passages 300. Discharge ports are located on the pneumatic chute 12, vertically above each passage 300. Each discharge port is connected to a vertically downward-extending powder bulker 13. Each discharge port is also equipped with an independently controllable valve (e.g., an arc valve). Controlling the opening and closing of the valve controls whether the powder bulker 13 is connected. A pneumatic gate valve is provided between adjacent discharge ports.

[0048] With the above-mentioned structure, the present invention eliminates the powder dispensing device and buffer box, and instead provides multiple dispensing outlets directly on the pneumatic chute 12 for dispensing, reducing the system's footprint and material usage. The multiple dispensing outlets on the pneumatic chute 12, equipped with pneumatic gate valves and independently controllable valves, enable rapid and flexible dispensing of powders through each powder bulker 13, improving transfer efficiency.

[0049] The ash hopper 2 is buried below the ground level L, and the ash hopper foundation can be constructed using cement concrete, which reduces the occupation of ground space and also makes the structural foundation of the entire system more stable.

[0050] A material incoming channel 400 is further provided on the front side of the discharge port 6. In this embodiment, the two sides of the material incoming channel 400 are supported by idle containers 16, and an arched ceiling 17 is provided on the top. After the vehicle enters the material incoming channel 400, it is unloaded, which can effectively prevent dust from overflowing during unloading. The unloading operation is covered by the container 16 and the arched ceiling 17, and dust cannot be seen from the outside. At the same time, it can also have a windproof effect.

[0051] The second frame 9 is fixed to the rear side of the first frame 3, and the air delivery chute 12 extends toward the rear side of the first frame 3. A staircase 18 is also provided on the first frame 3 for workers to ascend. A dust cover 19 is provided on the second frame 9, which covers the air delivery chute 12. This prevents dust from escaping and causing environmental problems when the tank truck is filling powder. Dust raised during the filling process is collected within the dust cover and can be filtered through a dust removal device.

[0052] Example 2:

[0053] like Figure 15 、 Figure 16 As shown, in this embodiment, no incoming material channel is provided in front of the discharge bin, and only a channel 300 for transport vehicles is provided on the lower side of the second frame 9. The length of the air delivery chute 12 is shortened, and only a single discharge port is provided on the air delivery chute 12. This discharge port is connected to a powder bulking machine 13 extending vertically downward. When a tank truck 500 enters the channel 300, the powder bulking machine 13 fills the tank truck 500. This structure of the powder transfer system in this embodiment achieves a compact design, significantly reducing the floor space.

[0054] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A powder transfer system, characterized by: The hopper comprises a discharge part and a sub-packaging part, wherein the discharge part comprises a discharge bin, an ash hopper located below the discharge bin, a first frame covering the outside of the discharge bin, and a bag dust collector and a screw elevator arranged on the first frame. A discharge port is provided on the front side of the discharge bin, the screw elevator is located outside the discharge bin and at the rear side of the discharge bin, a feed pipe of the screw elevator is vertically inserted downward into the ash hopper, the upper part of the screw elevator is fixed on the first frame, a dust removal port is provided in the discharge bin, and the dust removal port is connected to the bag dust collector through a dust removal pipeline; the sub-packaging part comprises a second frame and a silencer, a water dust removal device and an air chute fixedly mounted on the second frame. A passage for transport vehicles is provided below the second frame. The second frame is fixed to the rear side of the first frame. One end of the air chute is connected to the outlet of the conveying pipe, and the other end is inclined downward toward the rear side of the first frame to extend to the passage. A discharge port is provided on the air chute and vertically above the passage, and a powder bulk loader extending vertically downward is connected to the discharge port. The bag dust collector is connected to the silencer and the water dust removal device in sequence through a dust removal pipeline.

2. The powder transfer system according to claim 1, characterized in that: An air curtain device is provided on the discharge port, and the air curtain device includes an air outlet body, and the air outlet body can blow air at the discharge port to form an air curtain; the air curtain device is connected to the exhaust end of the water dust removal device through an air supply pipeline.

3. The powder transfer system according to claim 1, characterized in that: There are multiple discharge ports arranged in parallel, and each discharge port is also provided with a rolling door device.

4. The powder transfer system according to claim 1, characterized in that: The ash hopper is provided with a concrete foundation and is partially buried below ground level.

5. The powder transfer system according to claim 1, characterized in that: A material incoming channel is also provided on the front side of the discharge port, supports are provided on both sides of the material incoming channel, and an arched ceiling is provided on the top.

6. The powder transfer system according to any one of claims 1 to 5, characterized in that: A plurality of the channels are arranged side by side below the second frame, each of the discharge ports is further provided with a valve, and a pneumatic gate valve is provided between adjacent discharge ports.

7. The powder transfer system according to any one of claims 1 to 5, characterized in that: The first frame is also provided with stairs for workers to climb up.

8. The powder transfer system according to any one of claims 1 to 5, characterized in that: A dust cover is provided on the second frame, and the dust cover covers the air delivery chute.

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