Hopper of grab ship unloader

Abstract

The utility model provides a hopper of a grab ship unloader, which relates to the technical field of ship unloaders and comprises a hopper body, an opening is arranged at the upper end of the hopper body, a first wind blocking wall, a second wind blocking wall, a land side wind blocking door and a sea side wind blocking door are respectively arranged at the upper end of the periphery of the opening, and the sea side wind blocking door comprises a first door body and a second door body. One side of the first door body is connected with a first wind shielding wall, one side of the second door body is connected with a second wind shielding wall, a moving gap is formed between the first door body and the second door body, and first spraying assemblies are arranged on the side, close to the second door body, of the first door body and the side, close to the first door body, of the second door body correspondingly. The upper end of the first wind shielding wall is rotationally connected with a first sealing cover, the upper end of the second wind shielding wall is rotationally connected with a second sealing cover, and third spraying assemblies are arranged on the opposite sides of the first sealing cover and the second sealing cover. And through comprehensive closed design and comprehensive application of the spraying assembly, generation and flying of dust are remarkably reduced, and the working environment is improved.

Description

Technical Field

[0001] This utility model relates to the field of ship unloading machine technology, and more specifically, to a grab bucket ship unloader hopper. Background Technology

[0002] Grab unloaders are important bulk material transfer equipment in port terminals. They are large-scale equipment used to transport solid bulk cargo from the ship's hold to the bulk cargo conveyor belt on the dock. The main material handling device is the grab bucket. After grabbing the bulk material from the ship, the grab bucket unloads it into a conical hopper, which then sends it to the belt conveyor on the dock through the hopper's outlet, and finally to the stockyard.

[0003] During operation, the grab bucket unloader releases bulk material from the grab bucket into the hopper. This falling material disturbs the surrounding air, causing small particles to be thrown into the air and generating dust. As the material falls into the hopper, it releases its potential energy and rebounds, colliding with subsequently falling material and generating significant dust at the point of impact. The increasing amount of material in the hopper displaces air, creating a backflow that carries small particles upwards, further exacerbating dust generation within the hopper.

[0004] In existing technologies, to prevent dust overflow, wind deflectors are installed on the three sides where no material is being fed. Spraying devices are installed on the inner side of the wind deflectors, and dry negative pressure dust collection devices are installed on the wind deflectors. These measures have achieved a certain degree of control over environmental pollution from grab bucket ship unloaders. However, the hopper opening and the material feeding side are completely open. Under the influence of ambient wind, dust will overflow from the openings, resulting in unsatisfactory dust suppression and a poor working environment. Utility Model Content

[0005] The problem this invention addresses is: how to comprehensively reduce dust overflow from the grab unloader bucket during the unloading process while maintaining normal operation of the grab bucket, thereby significantly improving the working environment and reducing dust pollution.

[0006] To address the aforementioned problems, this utility model provides a grab bucket unloader hopper, comprising: a hopper body, a first windbreak wall, a second windbreak wall, a land-side windbreak door, a sea-side windbreak door, and a top cover. The upper end of the hopper body has an opening, and the upper ends of the opening are respectively provided with the first windbreak wall, the second windbreak wall, the land-side windbreak door, and the sea-side windbreak door. The first windbreak wall and the second windbreak wall are located on the left and right sides of the opening and are arranged opposite to each other. The land-side windbreak door and the sea-side windbreak door are located on the front and rear sides of the opening and are arranged opposite to each other. The left and right sides of the land-side windbreak door are connected to the first windbreak wall and the second windbreak wall, respectively. The sea-side windbreak door includes a first door body and a second door body. One side of the first door body is connected to the first windbreak wall, and one side of the second door body is connected to the second windbreak wall. A sliding gap is provided between the first door and the second door for the grab bucket to move back and forth. A first spray assembly is provided on the side of the first door near the second door and the side of the second door near the first door. A second spray assembly is provided at the upper end of the first door and the upper end of the second door. The top cover includes a first cover and a second cover. The first cover is rotatably connected to the upper end of the first windbreak wall, and the second cover is rotatably connected to the upper end of the second windbreak wall. When the grab bucket unloads material into the opening of the hopper body, both the first cover and the second cover rotate towards the side closer to the opening to make the upper part of the hopper body relatively closed. A third spray assembly is provided on the side of the first cover near the second cover and the side of the second cover near the first cover.

[0007] Optionally, the landside windbreak is a flexible windbreak.

[0008] Optionally, a mounting base is provided on the side of the first windbreak wall away from the second windbreak wall, and an electric push rod or hydraulic cylinder is provided between the mounting base and the first cover. The fixed end of the electric push rod or the hydraulic cylinder is hinged to the mounting base, and the moving end of the electric push rod or the hydraulic cylinder is connected to the first cover.

[0009] Optionally, the first windbreak wall has a flow guiding cavity inside, and a flow guiding baffle is provided inside the flow guiding cavity. The lower end of the flow guiding baffle is connected to the upper end of the opening. The flow guiding baffle divides the flow guiding cavity into a first chamber and a second chamber that are connected at the upper end. The first chamber is located on the side closer to the hopper body, and the second chamber is located on the side away from the hopper body. The lower end of the first windbreak wall near the second windbreak wall is connected to the first chamber and has an air inlet. The air inlet is connected to the space above the opening of the hopper body. The lower end of the first windbreak wall away from the second windbreak wall is connected to the second chamber and has a material discharge port.

[0010] Optionally, an axial flow fan is provided on the lower inner wall of the second chamber. The axial flow fan is used to draw dust from the opening through the air inlet and discharge it from the discharge port after passing through the first chamber and the second chamber.

[0011] Optionally, a filter screen is provided between the inner wall of the second chamber and the guide baffle. The filter screen is used to filter dust entering the second chamber along the air inlet and the first chamber. The filter screen is located at the upper end of the axial flow fan. An insertion port is provided on the side of the first windbreak wall away from the second windbreak wall corresponding to the filter screen. A pull-out block is provided on one side of the filter screen extending out of the insertion port.

[0012] Optionally, the first door and the second door are configured to move relative to or away from each other to reduce or increase the width of the moving gap in the left-right direction.

[0013] Optionally, it also includes a material receiving and recycling plate and a driving device. One end of the material receiving and recycling plate is connected to the lower end of the landside windbreak, and the other end of the material receiving and recycling plate is rotatably connected to the upper end of the opening. The driving device is connected to the material receiving and recycling plate and is used to lift the material receiving and recycling plate so that the side of the material receiving and recycling plate near the opening is lower than the side of the material receiving and recycling plate away from the opening.

[0014] Optionally, the cross-section of the inner cavity of the opening of the hopper body is octagonal, and the area of ​​the cross-section of the inner cavity of the opening of the hopper body gradually decreases towards the side away from the opening.

[0015] Optionally, dustproof nets are provided on the outer sides of the first windbreak wall, the second windbreak wall, the landside windbreak door, and the seaside windbreak door.

[0016] The beneficial effects of the grab unloader hopper of this utility model are as follows: The upper end of the hopper body has an opening, which is surrounded by a first windbreak wall, a second windbreak wall, a land-side windbreak door, and a sea-side windbreak door. The first and second windbreak walls are located on the left and right sides of the opening, respectively, while the land-side and sea-side windbreak doors are located on the front and rear sides of the opening, respectively. This layout aims to prevent dust from overflowing from all directions. The sea-side windbreak door consists of a first door body and a second door body, with a moving gap between them to allow the grab bucket to move back and forth, ensuring the normal operation of the grab bucket while minimizing dust overflow from this point. First spray components are installed at the relative positions of the first and second door bodies to spray during the movement and unloading of the grab bucket, moistening the material and air, reducing dust dispersion, and suppressing dust overflow from the moving gap. The top cover consists of a first cover and a second cover, which are rotatably connected to the upper ends of the first and second windbreak walls, respectively. When the grab bucket unloads material into the hopper body, the first and second covers rotate towards the opening, making the top of the hopper body relatively closed, further preventing dust from overflowing from above. Simultaneously, a third spray assembly is installed at the relative positions of the first and second covers to enhance the dust suppression effect and prevent dust from overflowing from the gap between the first and second covers. Additionally, a second spray assembly is installed at the upper ends of both the first and second doors to reduce dust overflow at the gaps between the first and second doors and the first and second covers, respectively.

[0017] This invention effectively reduces dust overflow from all directions by incorporating windbreak walls and doors in all directions, as well as spray components at key locations, significantly improving dust suppression. Due to the reduced dust overflow, the air quality in the working environment is significantly improved, and the health impact on operators is correspondingly reduced. The design of the sea-side windbreak door considers both dust suppression and ensuring the normal movement and operation of the grab bucket, achieving a balance between function and efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the first and second windbreak walls according to one embodiment of the present invention;

[0019] Figure 2 This is a structural schematic diagram of a landside windbreak and a seaside windbreak according to one embodiment of the present invention.

[0020] Figure 3 A schematic diagram of the structure of a seaside windbreak door according to one embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of a dustproof net according to one embodiment of the present invention. Figure 1 ;

[0022] Figure 5This is a schematic diagram of a dustproof net according to one embodiment of the present invention. Figure 2 .

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Hopper body; 11. Opening; 2. First windbreak wall; 21. Mounting base; 22. Electric push rod; 23. Flow guide cavity; 231. First chamber; 232. Second chamber; 24. Flow guide baffle; 25. Air inlet; 26. Material discharge port; 27. Axial flow fan; 28. Filter screen; 29. ​​Pull-out block; 3. Second windbreak wall; 4. Landside windbreak door; 41. Material receiving and recovery plate; 5. Seaside windbreak door; 51. First door body; 52. Second door body; 53. Movement gap; 54. First spray assembly; 55. Second spray assembly; 6. Top cover; 61. First cover; 62. Second cover; 63. Third spray assembly; 7. Dustproof net. Detailed Implementation

[0025] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0026] In the attached diagram, the Z-axis represents the vertical direction, i.e., up and down, with the positive direction of the Z-axis representing up and the negative direction representing down. The X-axis represents the horizontal direction and is designated as the front and back position, with the positive direction of the X-axis representing the front and the negative direction representing the back. The Y-axis represents the left and right position, with the positive direction of the Y-axis representing the left and the negative direction representing the right. It should be noted that the aforementioned representations of the Z, Y, and X axes are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0028] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0029] like Figure 1 , Figure 2 , Figure 3 As shown in the figure, the grab unloader bucket provided by this utility model includes: a bucket body 1, a first windbreak wall 2, a second windbreak wall 3, a land-side windbreak door 4, a sea-side windbreak door 5, and a top cover 6. The upper end of the bucket body 1 is provided with an opening 11, and the upper ends of the four sides of the opening 11 are respectively provided with the first windbreak wall 2, the second windbreak wall 3, the land-side windbreak door 4, and the sea-side windbreak door 5; the first windbreak wall 2 and the second windbreak wall 3 are respectively located on the left and right sides of the opening 11 and are arranged opposite to each other; the sea-side windbreak door 5 and the land-side windbreak door 4 are respectively located on the front and rear sides of the opening 11 and are arranged opposite to each other, and the left and right sides of the land-side windbreak door 4 are respectively connected to the first windbreak wall 2 and the second windbreak wall 3; the sea-side windbreak door 5 includes a first door body 51 and a second door body 52, one side of the first door body 51 is connected to the first windbreak wall 2, and one side of the second door body 52 is connected to the second windbreak wall 3. A sliding gap 53 is provided between the door body 51 and the second door body 52 for the grab bucket to move back and forth. A first spray assembly 54 is provided on the side of the first door body 51 near the second door body 52 and the side of the second door body 52 near the first door body 51. A second spray assembly 55 is provided on the upper end of the first door body 51 and the upper end of the second door body 52. ​​The top cover 6 includes a first cover 61 and a second cover 62. The first cover 61 is rotatably connected to the upper end of the first windbreak wall 2 and the second cover 62 is rotatably connected to the upper end of the second windbreak wall 3. When the grab bucket unloads material into the opening 11 of the hopper body 1, the first cover 61 and the second cover 62 both rotate toward the side closer to the opening 11 so that the upper part of the hopper body 1 is relatively closed. A third spray assembly 63 is provided on the side of the first cover 61 near the second cover 62 and the side of the second cover 62 near the first cover 61.

[0030] Specifically, the upper end of the hopper body 1 is provided with an opening 11 for receiving bulk materials grabbed by the grab bucket. The first windbreak wall 2 and the second windbreak wall 3 are located on the left and right sides of the opening 11 respectively and are arranged opposite each other, serving to block external wind and dust. The land-side windbreak door 4 and the sea-side windbreak door 5 are located on the front and rear sides of the opening 11 respectively and are arranged opposite each other. The sea-side windbreak door 5 is divided into a first door body 51 and a second door body 52, with a moving gap 53 between them to accommodate the movement of the grab bucket, ensuring normal operation of the grab bucket while reducing dust leakage. A first spray assembly 54 and a second spray assembly 55 are respectively provided on the first door body 51 and the second door body 52 of the sea-side windbreak door 5 to wet the material surface, reduce dust generation, and suppress dust overflow from the moving gap 53. The top cover 6 consists of a first cover 61 and a second cover 62, which are rotatably connected to the upper ends of the first windbreak wall 2 and the second windbreak wall 3, respectively. When the grab bucket unloads material onto the hopper body 1, both the first cover 61 and the second cover 62 rotate towards the side closer to the opening 11, making the top of the hopper relatively closed, thereby reducing dust leakage. Simultaneously, a third spray assembly 63 is provided on the first cover 61 and the second cover 62 of the top cover 6 to prevent dust from overflowing from the gap between the first cover 61 and the second cover 62, further enhancing the dust suppression effect. At the same time, a second spray assembly 55 is provided at the upper end of the first door body 51 and the upper end of the second door body 52 to reduce dust overflow at the gap between the first door body 51 and the first cover 61, and to reduce dust overflow at the gap between the second door body 52 and the second cover 62.

[0031] In this embodiment, a first windbreak wall 2, a second windbreak wall 3, a land-side windbreak door 4, and a sea-side windbreak door 5 are respectively provided at the upper perimeter of the opening 11 of the hopper body 1, forming a relatively enclosed unloading space, effectively reducing the impact of external ambient wind on dust generated during the unloading process. Spray components (first spray component 54, second spray component 55, and third spray component 63) provided on the sea-side windbreak door 5 and the top cover 6 can wet the material surface through spraying, increasing the adhesion between materials and reducing dust generation and dispersion. This embodiment, through comprehensive enclosed design and the integrated use of spray components, significantly reduces dust generation and dispersion, improving the working environment.

[0032] Optionally, the landside windbreak 4 is a flexible windbreak.

[0033] Specifically, the landside windbreak 4 is a flexible windbreak, which is usually made of flexible materials (such as canvas, rubber, plastic, etc.) and has a certain degree of elasticity and plasticity. When the grab bucket is unloading material in front of the hopper, the flexible windbreak can adapt to the movement of the grab bucket and the dynamic changes during the unloading process, maintain good sealing with the hopper opening 11, and will not hinder the normal operation of the grab bucket.

[0034] In this optional embodiment, the flexible windbreak door can tightly fit the edge of the hopper opening 11, reducing the possibility of dust escaping from the gap between the land-side windbreak door 4 and the hopper, thereby further improving the dust suppression effect. Because the flexible windbreak door has a certain degree of elasticity and plasticity, it can adapt to grabs of different shapes and sizes, as well as dynamic changes under different operating conditions, ensuring good sealing performance under any circumstances. Compared with rigid windbreak doors, flexible windbreak doors are easier to repair or replace when subjected to impact or wear, and are less costly. At the same time, it avoids collision damage during grab operation.

[0035] Optionally, such as Figure 1 As shown, a mounting base 21 is provided on the side of the first windbreak wall 2 away from the second windbreak wall 3. An electric push rod 22 or a hydraulic cylinder is provided between the mounting base 21 and the first cover 61. The fixed end of the electric push rod 22 or the hydraulic cylinder is hinged to the mounting base 21, and the moving end of the electric push rod 22 or the hydraulic cylinder is connected to the first cover 61.

[0036] Specifically, a dedicated mounting base 21 is provided on the side of the first windbreak wall 2 away from the second windbreak wall 3. The mounting base 21 can withstand the force and torque generated by the electric push rod 22 or the hydraulic cylinder during operation, while maintaining the stability and durability of the structure. The electric push rod 22 has the advantages of simple structure, easy control and maintenance, while the hydraulic cylinder has greater thrust and smoother motion characteristics. When selecting, factors such as the size, weight, working environment and cost of the equipment should be comprehensively considered. The fixed end of the electric push rod 22 or the hydraulic cylinder is connected to the mounting base 21 by a hinge, allowing the electric push rod 22 or the hydraulic cylinder to generate a certain rotation angle during extension and retraction, thereby adapting to the movement trajectory of the first cover 61 during opening and closing. The moving end of the electric push rod 22 or the hydraulic cylinder is connected to the first cover 61 by a suitable connection method (such as hinge, bolt connection, etc.) to ensure a firm and reliable connection, while being able to transmit sufficient force and torque to drive the rotation of the first cover 61.

[0037] In this optional embodiment, the rotating connection structure between the second baffle wall and the second cover 62 is consistent with the structure between the first windbreak wall 2 and the first cover 61. When the grab bucket unloads material onto the hopper body 1, the moving end of the electric push rod 22 or the hydraulic cylinder extends forward, pushing the first cover 61 and the second cover 62 to rotate simultaneously toward the side closer to the opening 11, thereby relatively sealing the upper part of the hopper body 1 and reducing dust overflow. When the first cover 61 and the second cover 62 are relatively closed, a space is reserved between the first cover 61 and the second cover 62 for the grab bucket wire rope to pass through, which does not affect the normal operation of the grab bucket. After the unloader completes the unloading operation, the moving end of the electric push rod 22 or the hydraulic cylinder retracts, driving the first cover 61 and the second cover 62 back to their original positions, and the opening 11 above the hopper opens, without affecting the unloader's hoisting and cleaning operations. Driven by an electric push rod 22 or a hydraulic cylinder, the first cover 61 and the second cover plate are automatically controlled, improving the automation level and working efficiency of the equipment, reducing the need for manual operation, lowering the complexity and risk of manual operation, and also reducing the labor intensity of operators. The relative sealing of the first cover 61 and the second cover plate can effectively reduce the possibility of dust overflowing from the top of the hopper, further improving the dust suppression effect.

[0038] Optionally, such as Figure 1 As shown, the first windbreak wall 2 has a flow guiding cavity 23 inside, and a flow guiding baffle 24 is provided inside the flow guiding cavity 23. The lower end of the flow guiding baffle 24 is connected to the upper end of the opening 11. The flow guiding baffle 24 divides the flow guiding cavity 23 into a first chamber 231 and a second chamber 232 connected at the upper end. The first chamber 231 is located on the side close to the hopper body 1, and the second chamber 232 is located on the side away from the hopper body 1. The lower end of the first windbreak wall 2, which is close to the second windbreak wall 3, is connected to the first chamber 231 and has an air inlet 25. The air inlet 25 is connected to the space above the opening 11 of the hopper body 1. The lower end of the first windbreak wall 2, which is away from the second windbreak wall 3, is connected to the second chamber 232 and has a material discharge port 26.

[0039] Specifically, the first baffle wall 2 has a guide cavity 23 inside, which can accommodate and guide the flow of air and dust. Meanwhile, the shape and size of the guide cavity 23 should be customized according to actual needs and the working environment to achieve the best guiding effect. The guide baffle 24 divides the guide cavity 23 into a first chamber 231 and a second chamber 232, and guides the flow direction of air and dust. The shape, size, and position of the guide baffle 24 should be designed and adjusted according to actual needs and the working environment. The air inlet 25 and the discharge port 26 are channels for exchange between the guide cavity 23 and the external space. The air inlet 25 can smoothly guide air and dust into the space above the opening 11 of the hopper body 1 for mixing and dilution. The discharge port 26 can smoothly discharge air and dust to the outside of the hopper body 1 for treatment. Meanwhile, the size and position of the air inlet 25 and the discharge port 26 should also be customized and adjusted according to actual needs and the working environment.

[0040] In this optional embodiment, the second windbreak wall 3 also has a guide cavity 23 structure, which is consistent with that in the first windbreak wall 2. When the grab bucket unloads bulk material into the hopper body 1, the airflow and dust generated by the falling bulk material are blocked by the first windbreak wall 2. At this time, the airflow and dust are guided into the guide cavity 23. The airflow and dust first enter the first chamber 231, and then continue to flow along the guide baffle 24 to the second chamber 232. In the second chamber 232, the airflow and dust are discharged to the outside of the hopper body 1 through the discharge port 26 or undergo further processing. Since the second chamber 232 is located on the side away from the hopper body 1, the airflow and dust discharged from it have a smaller impact on the interior of the hopper body 1. By setting the flow guide cavity 23 and the flow guide baffle 24, the flow direction of airflow and dust can be guided and controlled more effectively, reducing the accumulation and overflow of dust inside the hopper body 1, effectively suppressing the diffusion of dust and collecting the dust flow.

[0041] Optionally, such as Figure 1 As shown, an axial flow fan 27 is provided on the lower inner wall of the second chamber 232. The axial flow fan 27 is used to draw dust from the opening 11 through the air inlet 25 and discharge it from the discharge port 26 after passing through the first chamber 231 and the second chamber 232.

[0042] Specifically, when the grab bucket unloads material, a large amount of dust is generated at the opening 11 of the hopper body 1. At this time, the axial flow fan 27 starts and generates suction, drawing the dust into the first chamber 231. The dust then continues to flow into the second chamber 232. In the second chamber 232, the dust is again propelled by the airflow generated by the axial flow fan 27 and finally discharged from the discharge port 26 to the outside of the hopper body 1 for collection.

[0043] In this optional embodiment, the second chamber 232 within the second windbreak wall 3 is also equipped with an axial flow fan 27. The axial flow fan 27 can more effectively draw dust from the opening 11 of the hopper body 1 into the guide chamber 23, and guide the dust to the outside of the hopper body 1 through the guiding action of the guide baffle 24, thereby significantly improving the dust suppression effect. Through the exhaust action of the axial flow fan 27, dust can be discharged to the outside of the hopper body 1 in a timely manner, reducing the accumulation of dust in the working area, thereby improving the working environment and reducing the health risks to operators.

[0044] Optionally, such as Figure 1 As shown, a filter screen 28 is provided between the inner wall of the second chamber 232 and the guide baffle 24. The filter screen 28 is used to filter dust that enters the second chamber 232 along the air inlet 25 and the first chamber 231. The filter screen 28 is located at the upper end of the axial flow fan 27. The side of the first windbreak wall 2 away from the second windbreak wall 3 is provided with an insertion port corresponding to the filter screen. A pull block 29 is provided on one side of the filter screen 28 that extends out of the insertion port.

[0045] Specifically, the filter screen 28 can be customized according to actual needs and working environment, including parameters such as its material, pore size, and filtration efficiency. For example, a stainless steel filter screen 28 can be selected to ensure its durability and corrosion resistance; at the same time, an appropriate pore size can be selected according to the size and density of dust particles to ensure filtration efficiency. The filter screen 28 is installed between the inner wall of the second chamber 232 and the guide baffle 24, and is located at the upper end of the axial flow fan 27. When the airflow enters the second chamber 232 through the air inlet 25 and the first chamber 231, it will first pass through the filter screen 28 for filtration, and then be discharged through the axial flow fan 27. To facilitate the replacement and cleaning of the filter screen 28, an insertion port is provided on the side of the first baffle wall 2 away from the second baffle wall 3, and one side of the filter screen 28 is allowed to extend out of the insertion port to form a pull-out block 29. The size of the insertion port should be large enough to allow the filter screen 28 to be easily pulled out, and the pull-out block 29 is easy for the operator to hold and operate. During use, the filter screen 28 should be inspected and cleaned regularly to ensure its filtration efficiency. When the filter screen 28 is clogged with dust or severely worn, it should be replaced promptly. For replacement, the operator can pull the filter screen 28 out of the insertion port using the pull-out block 29, and then install a new filter screen 28.

[0046] In this optional embodiment, the inner wall of the second chamber 232 within the second windbreak wall 3 is also provided with the same filter screen 28 and other structures. When the grab bucket unloads bulk material into the hopper body 1, the airflow and dust generated by the falling bulk material are blocked by the first windbreak wall 2 and guided into the guide cavity 23. The airflow and dust first enter the first chamber 231 and then continue to flow into the second chamber 232. In the second chamber 232, the filter screen 28 can capture dust particles in the airflow, while the clean airflow continues to be discharged from the discharge port 26 by the action of the axial flow fan 27. To facilitate the replacement and cleaning of the filter screen 28, an insertion port is provided on the side of the first windbreak wall 2 away from the second windbreak wall 3, allowing one side of the filter screen 28 to extend out of the insertion port, forming a pull-out block 29. The operator can easily pull the filter screen 28 out of the second chamber 232 through the pull-out block 29 for cleaning or replacement. The filter screen 28 effectively captures dust particles in the airflow, reducing the dust content in the airflow discharged from the discharge port 26, thereby improving dust filtration efficiency. By filtering out dust particles from the airflow, the erosion and wear of dust on the axial flow fan 27 and other internal components can be reduced, thus extending the service life of the equipment. Reducing the amount of dust discharged from the discharge port 26 helps improve the working environment and reduce health risks to operators. The insertion port and pull-out block 29 make the replacement and cleaning of the filter screen 28 simple and easy, reducing the maintenance cost of the equipment.

[0047] Optionally, the first door 51 and the second door 52 are configured to move relative to or away from each other to reduce or increase the width of the moving gap 53 in the left-right direction.

[0048] Specifically, the first gate 51 and the second gate 52 move relative to or away from each other via a drive mechanism (such as a motor or cylinder). This drive mechanism precisely controls the speed and position of the first gate 51 and the second gate 52 to ensure accurate adjustment of the width of the movement gap 53. Simultaneously, the drive mechanism should possess sufficient driving force and stability to cope with variations in material flow rate and pressure. When it is necessary to reduce the width of the movement gap 53, the first gate 51 and the second gate 52 move relative to each other, i.e., they move closer to each other, thus reducing the width of the movement gap 53. Conversely, when it is necessary to increase the width of the movement gap 53, the first gate 51 and the second gate 52 move away from each other, i.e., they move further away from each other, thus increasing the width of the movement gap 53.

[0049] In this optional embodiment, the width of the moving gap 53 can be flexibly adjusted by the relative or opposite movement of the first gate 51 and the second gate 52 to meet the needs of different grabs, and enable the equipment or system to adapt to different material flow rates, ventilation volumes and other requirements, thereby improving its adaptability and flexibility.

[0050] Optionally, such as Figure 2 As shown, it also includes a material receiving and recycling plate 41 and a driving device. One end of the material receiving and recycling plate 41 is connected to the lower end of the landside windbreak door 4, and the other end of the material receiving and recycling plate 41 is rotatably connected to the upper end of the opening 11. The driving device is connected to the material receiving and recycling plate 41 and is used to lift the material receiving and recycling plate 41 so that the side of the material receiving and recycling plate 41 close to the opening 11 is lower than the side of the material receiving and recycling plate 41 away from the opening 11.

[0051] Specifically, to prevent the grab bucket from colliding with the landside windbreak 4 when it opens, in this embodiment, the landside windbreak 4 is moved back a certain distance relative to the hopper opening 11. To prevent material from accumulating between the landside windbreak 4 and the hopper opening 11, a receiving and recovery plate 41 is installed between the landside windbreak 4 and the hopper opening 11 to receive material scattered during the grab bucket's unloading process. A drive unit is connected to the receiving and recovery plate 41. Driven by the drive unit, the receiving and recovery plate 41 is raised along the side closest to the hopper opening 11, so that the side of the receiving and recovery plate 41 closest to the opening 11 is lower than the other side. This further allows the material collected on the receiving and recovery plate 41 to move into the hopper under its own gravity, completing the recovery of the material on the receiving and recovery plate 41.

[0052] In this optional embodiment, the material collected on the receiving and recycling plate 41 is moved into the hopper by its own gravity through the lifting action of the receiving and recycling plate 41, thereby reducing the accumulation of bulk material at the hopper opening 11 during loading and unloading, thereby reducing the leakage and waste of bulk material and improving the material recycling efficiency.

[0053] Optionally, the cross-section of the inner cavity of the feed inlet is octagonal, and the area of ​​the cross-section of the inner cavity of the feed inlet gradually decreases towards the side away from the opening 11.

[0054] Specifically, when material enters the hopper through the inlet, the octagonal cross-section of the inner cavity provides a more stable material flow path, reducing the possibility of material blockage or overflow and preventing material accumulation. At the same time, the gradually decreasing cross-sectional area can gradually accelerate the material flow.

[0055] In this optional embodiment, the octagonal cross-section of the inner cavity allows the material to be distributed more evenly when it falls into the hopper, reducing the accumulation and sticking of material on the hopper wall and preventing material buildup.

[0056] Optionally, such as Figure 4 , Figure 5 As shown, dustproof nets 7 are provided around the outer perimeter of the first windbreak wall 2, the second windbreak wall 3, the land-side windbreak door 4, and the sea-side windbreak door 5.

[0057] Specifically, the dustproof net 7 is at the same height as the first windbreak wall 2 or the second windbreak wall 3, and the dustproof net 7 located outside the seaside windbreak door 5 has a movable gap corresponding to the grab bucket. The dustproof net 7 should be made of corrosion-resistant, wear-resistant, and strong materials to ensure its long-term stability and reliability. Common materials for dustproof net 7 include stainless steel wire, galvanized iron wire, and nylon fiber. The mesh size of the dustproof net 7 should be selected according to the particle size and density of the bulk material being processed to ensure effective blocking of dust and particles without affecting normal airflow.

[0058] In this optional embodiment, the dustproof net 7 not only serves as a windproof barrier for the hopper, but also acts as a second dust suppression barrier for the dust generated during the unloading process, further inhibiting the spread of dust.

[0059] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A grab bucket unloader hopper, characterized in that, include: The hopper body (1), first windbreak wall (2), second windbreak wall (3), landside windbreak door (4), seaside windbreak door (5), and top cover (6) are provided. The upper end of the hopper body (1) is provided with an opening (11). The upper ends of the opening (11) are respectively provided with the first windbreak wall (2), second windbreak wall (3), landside windbreak door (4), and seaside windbreak door (5). The first windbreak wall (2) and the second windbreak wall (3) are located on the left and right sides of the opening (11) and are arranged opposite to each other. The seaside windbreak door (5) and the top cover (6) are provided with the first windbreak wall (2), second windbreak wall (3), landside windbreak door (4), seaside windbreak door (5), and top cover (6). The landside windbreak doors (4) are located on the front and rear sides of the opening (11) and are arranged opposite to each other. The left and right sides of the landside windbreak doors (4) are connected to the first windbreak wall (2) and the second windbreak wall (3) respectively. The seaside windbreak door (5) includes a first door body (51) and a second door body (52). One side of the first door body (51) is connected to the first windbreak wall (2), and one side of the second door body (52) is connected to the second windbreak wall (3). A movable space is provided between the first door body (51) and the second door body (52). The gap (53) is used for the back-and-forth movement of the grab bucket. A first spray assembly (54) is provided on the side of the first door (51) near the second door (52) and on the side of the second door (52) near the first door (51). A second spray assembly (55) is provided on the upper end of the first door (51) and the upper end of the second door (52). The top cover (6) includes a first cover (61) and a second cover (62). The first cover (61) is rotatably connected to the first windbreak wall. (2) The second cover (62) is rotatably connected to the upper end of the second windbreak wall (3). When the grab bucket unloads material to the opening (11) of the hopper body (1), the first cover (61) and the second cover (62) both rotate toward the side closer to the opening (11) so that the upper part of the hopper body (1) is relatively closed. The side of the first cover (61) close to the second cover (62) and the side of the second cover (62) close to the first cover (61) are both provided with a third spray assembly (63).

2. The grab bucket unloader hopper according to claim 1, characterized in that, The landside windbreak door (4) is a flexible windbreak door.

3. The grab bucket unloader hopper according to claim 1, characterized in that, The first windbreak wall (2) is provided with a mounting base (21) on the side away from the second windbreak wall (3). An electric push rod (22) or a hydraulic cylinder is provided between the mounting base (21) and the first cover (61). The fixed end of the electric push rod (22) or the hydraulic cylinder is hinged to the mounting base (21), and the moving end of the electric push rod (22) or the hydraulic cylinder is connected to the first cover (61).

4. The grab bucket unloader hopper according to claim 1, characterized in that, The first windbreak wall (2) has a flow guide cavity (23) inside, and a flow guide baffle (24) is provided inside the flow guide cavity (23). The lower end of the flow guide baffle (24) is connected to the upper end of the opening (11). The flow guide baffle (24) divides the flow guide cavity (23) into a first chamber (231) and a second chamber (232) connected at the upper end. The first chamber (231) is located on the side close to the hopper body (1), and the second chamber (232) is located on the side away from the hopper body (1). The lower end of the first windbreak wall (2) close to the second windbreak wall (3) is connected to the first chamber (231) and has an air inlet (25). The air inlet (25) is connected to the space above the opening (11) of the hopper body (1). The lower end of the first windbreak wall (2) away from the second windbreak wall (3) is connected to the second chamber (232) and has a material discharge port (26).

5. The grab bucket unloader hopper according to claim 4, characterized in that, An axial flow fan (27) is provided on the inner side wall of the lower end of the second chamber (232). The axial flow fan (27) is used to draw the dust at the opening (11) through the air inlet (25) and discharge it from the discharge port (26) after passing through the first chamber (231) and the second chamber (232).

6. The grab bucket unloader hopper according to claim 5, characterized in that, A filter screen (28) is provided between the inner wall of the second chamber (232) and the guide baffle (24). The filter screen (28) is used to filter dust that enters the second chamber (232) along the air inlet (25) and the first chamber (231). The filter screen (28) is located at the upper end of the axial flow fan (27). The side of the first windbreak wall (2) away from the second windbreak wall (3) is provided with an insertion port corresponding to the filter screen. A pull block (29) is provided on one side of the filter screen (28) extending out of the insertion port.

7. The grab bucket unloader hopper according to claim 1, characterized in that, The first door (51) and the second door (52) are configured to move relative to or away from each other to reduce or increase the width of the moving gap (53) in the left-right direction.

8. The grab bucket unloader hopper according to claim 1, characterized in that, It also includes a material receiving and recycling plate (41) and a driving device. One end of the material receiving and recycling plate (41) is connected to the lower end of the landside windbreak door (4), and the other end of the material receiving and recycling plate (41) is rotatably connected to the upper end of the opening (11). The driving device is connected to the material receiving and recycling plate (41) and is used to lift the material receiving and recycling plate (41) so that the side of the material receiving and recycling plate (41) close to the opening (11) is lower than the side of the material receiving and recycling plate (41) away from the opening (11).

9. The grab bucket unloader hopper according to claim 1, characterized in that, The cross-section of the inner cavity of the opening (11) of the hopper body (1) is octagonal, and the area of ​​the cross-section of the inner cavity of the opening (11) of the hopper body (1) gradually decreases towards the side away from the opening (11).

10. The grab bucket unloader hopper according to claim 1, characterized in that, Dustproof nets (7) are provided on the outside of the first windbreak wall (2), the second windbreak wall (3), the land-side windbreak door (4) and the sea-side windbreak door (5).

Images