Efficient suction disc for handling scrap steel

Abstract

The present application relates to hoisting transportation, and specifically discloses a high-efficiency suction disc for loading and unloading scrap steel, which comprises a suction disc steel shell, a plurality of spiral guide plates are arranged on the circumferential inner wall of the suction disc steel shell in the axial direction, and a lifting connecting assembly is arranged at the top end of the suction disc steel shell; a magnetic attraction device is internally provided with a flow guide structure; a junction box is detachably connected to the top end of the suction disc steel shell, a partition plate is arranged on the circumferential inner wall of the junction box, and the internal space of the junction box is divided into a refrigeration cavity and an air making cavity by the partition plate; an air making device is located in the air making cavity of the junction box and is communicated with the suction disc steel shell and the refrigeration cavity; and a Peltier effect refrigerator is located in the refrigeration cavity of the junction box; wherein the air making device drives airflow, and the Peltier effect actively refrigerates to provide forced air cooling for the magnetic attraction device. The present application has a composite heat dissipation system combining spiral turbulent flow and active refrigeration, builds a high-efficiency and directional forced air cooling heat dissipation path, and significantly improves the heat dissipation efficiency of the core components.

Description

Technical Field

[0001] This invention relates to lifting and transportation, specifically to a high-efficiency suction cup for loading and unloading scrap steel. Background Technology

[0002] In industries such as steel metallurgy, recycling, and port logistics, the loading, unloading, transfer, and storage of scrap steel are core production processes. Traditional scrap steel loading and unloading operations mostly employ cranes equipped with hooks and grabs. While grabs can achieve a certain degree of bulk material handling, they generally suffer from inconsistent gripping volume, insufficient penetration depth, easy material leakage, and poor gripping effect on thin materials when dealing with scrap steel of varying shapes, sizes, and loose stacks. This results in long cycle times, high energy consumption, and low efficiency. Furthermore, the mechanical jaws of the grabs are prone to wear and deformation under frequent impacts, leading to high maintenance costs. As an important load-bearing element or device, electromagnetic chucks are already used in the steel industry. Powered by the crane's electrical system, they generate a strong magnetic field, enabling them to quickly lift ferromagnetic scrap steel.

[0003] However, traditional electromagnetic chucks have several problems in scrap steel handling scenarios: They rely on natural convection or simple air ducts for heat dissipation, resulting in unclear airflow paths and low air pressure, making it difficult to effectively remove the large amount of Joule heat generated by the energized coil. This leads to a continuous temperature rise in core components such as the coil and core. High temperatures not only cause magnetic attenuation, affecting the reliability of adsorption, but may also accelerate the aging of the coil insulation, shortening the equipment's lifespan and even posing safety hazards. Even in some chucks that use air cooling, heat dissipation efficiency is limited by ambient temperature. In hot seasons or high-temperature operating environments, the intake air itself is hot, resulting in a small temperature difference between the intake air and the heat-generating components, significantly reducing heat dissipation efficiency. Passive cooling methods are insufficient to meet the heat dissipation requirements of high-load or harsh environments. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, this invention provides a high-efficiency suction cup for loading and unloading scrap steel, which can solve the problems mentioned in the background art.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A high-efficiency suction cup for loading and unloading scrap steel, comprising:

[0007] The suction cup steel shell has multiple spiral guide plates arranged axially on the inner circumference of the suction cup steel shell, and a lifting assembly is provided at the top of the suction cup steel shell;

[0008] The magnetic attraction device has an internal flow guiding structure;

[0009] A junction box is detachably connected to the top of the suction cup steel shell. A partition is provided on the inner circumference of the junction box, which divides the internal space of the junction box into a cooling chamber and an air-generating chamber that are distributed vertically.

[0010] The air generating device is located in the air generating chamber of the junction box, connecting the suction cup steel shell and the cooling chamber;

[0011] Peltier effect cooler, located in the cooling chamber of the junction box;

[0012] Among them, the airflow is driven by the air-generating device, and the Peltier effect is used for active cooling to provide forced air cooling for the magnetic attraction device.

[0013] Preferably, the magnetic attraction device includes a winding frame arranged in an "I" shape. The winding frame has an axially arranged through hole, and an iron core is disposed inside the through hole. A coil is wound on the winding frame. The wall of the through hole of the winding frame is provided with a plurality of first guide grooves. The top and bottom walls of the winding frame are provided with a plurality of second guide grooves. The second guide grooves are arc-shaped and match the number of first guide grooves. The two ends of the second guide grooves are respectively located on the wall of the first guide groove and the peripheral wall of the horizontal section of the winding frame. The plurality of second guide grooves are distributed in a circumferential array.

[0014] Preferably, the lifting assembly includes a lifting ring, and the top of the suction cup steel shell is provided with multiple support members, and a chain is provided between each of the multiple support members and the lifting ring.

[0015] Preferably, the plurality of spiral guide plates are arranged in a circumferential array, with a gap between the spiral guide plates and the coil, and the cross-section of the spiral guide plates is inclined, with the inclination direction being obliquely downward along the axial projection of the suction cup steel shell.

[0016] Preferably, the top opening of the suction cup steel shell is provided with a support tube, and the protruding tube at the bottom of the junction box is threadedly connected to the support tube.

[0017] Preferably, the cooling chamber sidewall of the junction box is provided with multiple air inlets, and a first filter screen is provided in the air inlets of the junction box; the air supply chamber bottomwall of the junction box is provided with multiple exhaust holes, and a second filter screen is provided in the exhaust holes of the junction box.

[0018] Preferably, the junction box is provided with a protective plate on its outer circumference, and the bottom of the protective plate is higher than the top of the first filter screen.

[0019] Preferably, the air-generating device includes a ventilation pipe that runs through and is fixedly installed on the top of the partition. The bottom end of the ventilation pipe abuts against the winding frame. A rubber pad is provided at the bottom end of the ventilation pipe, and a fan is provided on the inner wall of the ventilation pipe.

[0020] Preferably, the ventilation duct includes an inlet section, a diffuser section, and an outlet section arranged sequentially along the fluid flow direction. The cross-sectional area of ​​the diffuser section of the ventilation duct gradually increases along the flow direction. The top of the winding frame is provided with an abutment groove, which matches the rubber pad at the bottom of the ventilation duct.

[0021] Preferably, the Peltier effect cooler is installed through and fixedly mounted on the top of the junction box. The Peltier effect cooler includes two insulating substrates, and the peripheral walls of the two insulating substrates are connected to an insulating frame. Multiple thermoelectric units are arranged between the insulating substrates and the insulating frame. Each thermoelectric unit includes a PN junction, and the multiple thermoelectric units are electrically connected in series.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. By setting up a magnetic attraction device and an air control device, the fan, as a power source, drives the airflow to be pressurized through the diffuser section of the ventilation duct and then forcibly guided to the winding frame. The first and second guide grooves set on the winding frame work together to distribute and guide the airflow in an orderly manner, so that it directly and fully washes the heated coil along the preset path. This achieves directional and forced air cooling of the main heat source. The airflow path is clear and the air pressure is concentrated, which can efficiently remove a large amount of Joule heat generated when the coil is working. This effectively prevents magnetic attenuation or coil insulation aging caused by excessive temperature rise, and ensures the stability of magnetic attraction performance and equipment life.

[0024] The beneficial effects are: it constructs an efficient and directional forced air cooling path, which significantly improves the heat dissipation efficiency of core components.

[0025] 2. By setting up a spiral guide plate and a Peltier effect cooler, the arc-shaped second guide groove orderly distributes and guides the airflow to the outside of the horizontal section of the winding frame. After the airflow is discharged from the winding frame, it enters the spiral channel formed by the inner wall of the suction cup steel shell and the spiral guide plate. The second guide groove and the spiral channel not only extend the heat dissipation path, but the turbulence effect they generate also enhances the heat exchange of the inner wall of the steel shell and the coil, and helps to separate dust in the airflow. Secondly, a Peltier effect cooler is integrated at the air inlet of the airflow circulation. The cooler directly and actively cools the air that is about to enter the heat dissipation circulation, providing a lower temperature "cold source", adding a "pre-cooling" link to the entire air-cooling system, significantly reducing the inlet air temperature, thereby greatly increasing the temperature difference between the entire system and the coil, and fundamentally enhancing the heat dissipation capacity.

[0026] The beneficial effect is that it has a composite heat dissipation system that combines spiral turbulence with active cooling.

[0027] 3. The junction box is connected to the suction cup steel shell via a support tube and thread, integrating key heat dissipation components such as the fan, cooler, and filter into a single, detachable module. This greatly facilitates the installation, commissioning, and subsequent maintenance, cleaning, or component replacement of the heat dissipation system.

[0028] The beneficial effects that can be obtained are: the modular integrated design enhances the reliability, maintainability and environmental adaptability of the equipment. Attached Figure Description

[0029] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a cross-sectional view of the suction cup steel shell in this invention;

[0032] Figure 3 This is a diagram showing the installation structure of the suction cup steel shell and the spiral guide plate in this invention;

[0033] Figure 4 This is a diagram showing the installation structure of the winding frame, iron core, and coil in this invention.

[0034] Figure 5 This is a diagram showing the installation structure of the wire reel in this invention;

[0035] Figure 6 This is a diagram showing the installation structure of the junction box in this invention;

[0036] Figure 7 This is an installation structure diagram of the air-generating device in this invention;

[0037] Figure 8 This is an exploded view of the Peltier effect cooler in this invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] In the picture:

[0040] 1. Suction cup steel shell; 2. Spiral guide plate; 3. Support tube; 4. Support component; 5. Lifting ring; 6. Chain;

[0041] 11. Winding frame; 12. Iron core; 13. Coil; 14. First guide groove; 15. Second guide groove; 16. Abutment groove;

[0042] 21. Junction box; 22. Partition; 23. First filter screen; 24. Second filter screen; 25. Protective plate;

[0043] 31. Ventilation duct; 32. Fan;

[0044] 41. Insulating substrate; 42. Insulating frame; 43. Thermoelectric unit. Detailed Implementation

[0045] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the specific implementation methods, structures, features, and effects of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] In the description of this application, it should be understood that the orientation or positional relationship indicated by terms such as "inner" and "outer" are based on the orientation or position shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, a specific orientation structure and operation, and therefore should not be construed as a limitation of this application.

[0047] Reference Figures 1-8 This invention discloses a high-efficiency suction cup for loading and unloading scrap steel, comprising: a suction cup steel shell 1, with multiple spiral guide plates 2 arranged axially on the inner circumference of the suction cup steel shell 1, the multiple spiral guide plates 2 being arranged in a circumferential array, a gap being left between the spiral guide plates 2 and the coil 13, the cross-section of the spiral guide plates 2 being inclined, and the inclination direction being obliquely downward along the axial projection of the suction cup steel shell 1, a lifting assembly being provided at the top of the suction cup steel shell 1, the lifting assembly including a lifting ring 5, multiple support members 4 being provided at the top of the suction cup steel shell 1, and a chain 6 being provided between each of the multiple support members 4 and the lifting ring 5.

[0048] To achieve a highly efficient heat dissipation magnetic attraction device, in this embodiment: the magnetic attraction device has an internal flow guiding structure. The magnetic attraction device includes a winding frame 11, which is arranged in an "I" shape. The winding frame 11 has an axial through hole. An iron core 12 is arranged inside the through hole of the winding frame 11. A coil 13 is wound around the winding frame 11. Multiple first flow guiding grooves 14 are arranged on the wall of the through hole of the winding frame 11. Multiple second flow guiding grooves 15 are arranged on the top and bottom walls of the winding frame 11. The second flow guiding grooves 15 are arc-shaped and match the number of first flow guiding grooves 14. The two ends of the second flow guiding grooves 15 are located on the wall of the first flow guiding groove 14 and the peripheral wall of the horizontal section of the winding frame 11, respectively. The multiple second flow guiding grooves 15 are distributed in a circumferential array.

[0049] To facilitate the formation of an air intake channel, in this embodiment: a junction box 21 is detachably connected to the top of the suction cup steel shell 1. A support tube 3 is provided at the open end of the suction cup steel shell 1. The protruding tube at the bottom of the junction box 21 is threadedly connected to the support tube 3. A partition 22 is provided on the inner circumference of the junction box 21. The partition 22 divides the internal space of the junction box 21 into a cooling chamber and an air-generating chamber that are distributed vertically. Multiple air inlets are provided on the side wall of the cooling chamber of the junction box 21. A first filter 23 is provided in the air inlet of the junction box 21. Multiple exhaust holes are provided on the bottom wall of the air-generating chamber of the junction box 21. A second filter 24 is provided in the exhaust hole of the junction box 21. A protective plate 25 is provided on the outer circumference of the junction box 21. The bottom of the protective plate 25 is higher than the top of the first filter 23.

[0050] In order to drive the airflow, in this embodiment: an air generating device is located in the air generating chamber of the junction box 21, which connects the suction cup steel shell 1 and the cooling chamber. The air generating device includes a ventilation pipe 31, which is installed through and fixedly mounted on the top of the partition 22. The bottom end of the ventilation pipe 31 abuts against the cable reel 11. A rubber pad is provided at the bottom end of the ventilation pipe 31. An abutment groove 16 is provided at the top end of the cable reel 11. The abutment groove 16 matches the rubber pad at the bottom end of the ventilation pipe 31. A fan 32 is provided on the inner wall of the ventilation pipe 31. The ventilation pipe 31 includes an inlet section, a diffuser section and an outlet section arranged sequentially along the fluid flow direction. The flow cross-sectional area of ​​the diffuser section of the ventilation pipe 31 gradually increases along the flow direction.

[0051] To achieve active cooling, in this embodiment: a Peltier effect cooler is located in the cooling chamber of the junction box 21. The Peltier effect cooler is installed through and fixedly mounted on the top of the junction box 21. The Peltier effect cooler includes two insulating substrates 41. The peripheral walls of the two insulating substrates 41 are connected to an insulating frame 42. Multiple thermoelectric units 43 are arranged between the insulating substrates 41 and the insulating frame 42. The thermoelectric units 43 include PN junctions. The multiple thermoelectric units 43 are electrically connected in series.

[0052] The working principle and usage process of this invention are as follows: First, during the startup phase, when the system is powered on, the coil 13 in the magnetic suction device starts to work and generates a magnetic field. This magnetic field, through the magnetic conduction of the iron core 12 and the steel shell 1 of the suction cup, enables the entire suction cup to have magnetic force, thereby enabling it to firmly adsorb steel materials.

[0053] Simultaneously, the heat dissipation and airflow circulation system integrated on the top of the suction cup begins to work in tandem. The fan 32 located in the air control chamber of the junction box 21 starts, actively driving the airflow. The working principle is as follows: when the fan 32 runs, outside air enters the cooling chamber through the air inlet on the cooling chamber wall of the junction box 21, and then enters the ventilation duct 31. When the airflow passes through the specially designed diffuser section, the flow velocity decreases and the static pressure increases due to the gradual increase in the flow cross-sectional area. This helps the airflow to be output downward smoothly and efficiently. The bottom end of the ventilation duct 31 is tightly abutted against the abutment groove 16 at the top of the cable reel 11 through a rubber pad, forming a sealed or semi-sealed air duct interface, ensuring that all the driven airflow can be guided into the magnetic suction device. Next, the airflow first reaches the top of the winding frame 11, then flows downward along the first guide groove 14. Then, the second guide groove 15, which is distributed in a circumferential array, orderly distributes and guides the airflow to the outside of the horizontal section of the winding frame 11. The airflow washes over the coil 13 wound on the winding frame 11, taking away a large amount of Joule heat generated by the coil 13 due to energization. After that, the airflow enters the main body space of the suction cup steel shell 1. Multiple spiral guide plates 2 cooperate with the inner wall of the suction cup steel shell 1 to form a spiral channel. The airflow rotates at high speed and rises in the spiral channel. The rising airflow finally enters the air control chamber of the junction box 21 through the support tube 3 and is discharged through the exhaust hole with the second filter 24 on the bottom wall.

[0054] During the airflow circulation process, the Peltier effect cooler works. When direct current passes through the cooler, which is composed of multiple thermoelectric units 43 connected in series, according to the Peltier effect, the cooling surface of one insulating substrate 41 will absorb heat and become cold, while the heat dissipation surface of another insulating substrate 41 will release heat and become hot. The cooling surface faces and is in close contact with the hot airflow path of the cooling cavity entering the junction box 21 from the outside. When the heated airflow rising from inside the suction cup enters the air-generating cavity, it is discharged through the second filter 24.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A high-efficiency suction cup for loading and unloading scrap steel, characterized in that, include: The suction cup steel shell (1) has multiple spiral guide plates (2) arranged axially on the inner circumference of the suction cup steel shell (1), and a lifting assembly is provided at the top of the suction cup steel shell (1). A magnetic attraction device with an internal flow guiding structure. The magnetic attraction device includes a winding frame (11) arranged in an "I" shape. The winding frame (11) has an axial through hole. An iron core (12) is arranged in the through hole of the winding frame (11). A coil (13) is wound on the winding frame (11). Multiple first flow guiding grooves (14) are arranged on the wall of the through hole of the winding frame (11). Multiple second flow guiding grooves (15) are arranged on the top and bottom walls of the winding frame (11). The second flow guiding grooves (15) are arranged in an arc shape and match the number of first flow guiding grooves (14). The two ends of the second flow guiding grooves (15) are located on the wall of the first flow guiding groove (14) and the peripheral wall of the horizontal section of the winding frame (11), respectively. Multiple second flow guiding grooves (15) are arranged in a circular array. Junction box (21) is detachably connected to the top of suction cup steel shell (1). The inner circumference of junction box (21) is provided with partition (22). The partition (22) divides the internal space of junction box (21) into a cooling chamber and an air-generating chamber distributed vertically. The air generating device is located in the air generating chamber of the junction box (21), which connects the suction cup steel shell (1) and the cooling chamber. The air generating device includes a ventilation pipe (31), which is installed through and fixedly mounted on the top of the partition (22). The bottom end of the ventilation pipe (31) abuts against the winding frame (11). A fan (32) is provided on the inner wall of the ventilation pipe (31). Peltier effect cooler, located in the cooling chamber of junction box (21); Among them, the airflow is driven by the air-generating device, and the Peltier effect is used for active cooling to provide forced air cooling for the magnetic attraction device.

2. The high-efficiency suction cup for loading and unloading scrap steel according to claim 1, characterized in that, The lifting assembly includes a lifting ring (5), and the top of the suction cup steel shell (1) is provided with multiple support members (4), and a chain (6) is provided between the multiple support members (4) and the lifting ring (5).

3. The high-efficiency suction cup for loading and unloading scrap steel according to claim 1, characterized in that, Multiple spiral guide plates (2) are arranged in a circumferential array. There is a gap between the spiral guide plates (2) and the coil (13). The cross-section of the spiral guide plates (2) is inclined, and the inclination direction is obliquely downward along the axial projection of the suction cup steel shell (1).

4. The high-efficiency suction cup for loading and unloading scrap steel according to claim 1, characterized in that, The suction cup steel shell (1) has an open opening at the top with a support tube (3), and the convex tube at the bottom of the junction box (21) is threadedly connected to the support tube (3).

5. The high-efficiency suction cup for loading and unloading scrap steel according to claim 1, characterized in that, The junction box (21) has multiple air inlets on the side wall of the cooling chamber, and a first filter (23) is provided in the air inlet of the junction box (21). The junction box (21) has multiple exhaust holes on the bottom wall of the air generating chamber, and a second filter (24) is provided in the exhaust hole of the junction box (21).

6. The high-efficiency suction cup for loading and unloading scrap steel according to claim 5, characterized in that, The junction box (21) is provided with a protective plate (25) on its outer circumference, and the bottom of the protective plate (25) is higher than the top of the first filter screen (23).

7. The high-efficiency suction cup for loading and unloading scrap steel according to claim 1, characterized in that, The ventilation pipe (31) includes an inlet section, a diffuser section and an outlet section arranged sequentially along the fluid flow direction. The flow cross-sectional area of ​​the diffuser section of the ventilation pipe (31) gradually increases along the flow direction. The top of the winding frame (11) is provided with an abutment groove (16). The abutment groove (16) matches the rubber pad at the bottom of the ventilation pipe (31). The bottom of the ventilation pipe (31) is provided with a rubber pad.

8. The high-efficiency suction cup for loading and unloading scrap steel according to claim 1, characterized in that, The Peltier effect cooler is installed through and fixedly mounted on the top of the junction box (21). The Peltier effect cooler includes two insulating substrates (41). The two insulating substrates (41) are connected together by an insulating frame (42) on their periphery. Multiple thermoelectric units (43) are arranged between the insulating substrates (41) and the insulating frame (42). Each thermoelectric unit (43) includes a PN junction. The multiple thermoelectric units (43) are connected in series electrically.

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