Scrap metal conveying device

Abstract

The present invention belongs to the technical field of scrap metal processing, and in particular, relates to a scrap metal conveying device, including a conveying shell, a conveying motor, an arc conveying belt, and two conveying rollers matched with the arc conveying belt. The present invention enables the scrap metal conveying device to have the function of separating and conveying small scrap metal particles, avoiding the small scrap metal particles from flying and falling outside the conveying device, effectively improving the environmental performance of the conveying device, and reducing the kinetic energy of the scrap metal fragments falling to avoid the scrap metal fragments falling outside the conveying device. The limiting mechanism can effectively improve the stability of the scrap metal conveying on the conveying device, which not only reduces the wear rate of the conveying belt in the conveying device, but also eliminates the need for workers to collect the fallen scrap metal fragments, reducing the labor intensity of the workers, and can improve the reliability of the use of the scrap metal conveying device.

Description

Technical Field

[0001] The invention belongs to the technical field of scrap metal processing, and in particular relates to a scrap metal conveying device. Background Art

[0002] The scrap metal processing industry recycles industrial waste or various metal products and equipment that are obsolete in life. These recycled scrap metals are crushed and transported to smelting furnaces to be transformed into recycled metals. The transportation of these scrap metal fragments requires the use of relevant transportation devices. For example, the patent authorization announcement number CN220641309U discloses a scrap metal conveying device.

[0003] At present, when the broken scrap metal fragments fall from the outlet of the crushing equipment to the conveyor belt, some small scrap metal particles are easily disturbed by the indoor airflow and fly or fall outside the conveying equipment. At the same time, when the larger scrap metal fragments fall to the conveyor belt, they are also easily affected by the falling kinetic energy and the rebound force of the conveyor belt and fall outside the conveyor equipment. These flying small scrap metal particles not only cause environmental pollution, but also easily cause waste of scrap metal materials. In addition, the scrap metal that falls outside the conveying equipment still needs to be collected by the staff, which increases the labor intensity of the staff and affects the reliability of the use of the scrap metal conveying device.

[0004] In addition, small scrap metal particles can easily clog the gaps on the surface of the conveyor belt, resulting in reduced adhesion on the conveyor belt surface, which in turn leads to unstable transportation of scrap metal fragments on the conveyor belt. Scrap metal fragments are also prone to accumulation on the conveyor belt. Moreover, due to the vibration of the conveying device, the friction between the scrap metal fragments and the conveyor belt surface is intensified during transportation, causing the conveyor belt to wear more severely.

[0005] Therefore, we propose a scrap metal conveying device to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a scrap metal conveying device in view of the above problems.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a scrap metal conveying device, comprising a conveying shell, a conveying motor, an arc conveyor belt and two conveying rollers matched with the arc conveyor belt, the two conveying rollers are connected to the two sides of the conveying shell through bearings, the arc conveyor belt is sleeved on the two conveying rollers, the outer wall of the conveying shell is fixedly connected with a fixing frame, the conveying motor is fixedly connected with the outer wall of the fixing frame through bolts, the output end of the conveying motor is fixedly connected with the side end of one of the conveying rollers, a plurality of air intake holes are opened on the outer wall of the middle area of ​​the arc conveyor belt, two support bars are fixedly connected to the upper surface of the feed end of the conveying shell, the upper surfaces of the two support bars are fixedly connected with a support frame, the inner wall of the support frame is movably connected with a feed pipe, the top end of the feed pipe is fixedly connected with a feed hopper, and the outer wall of the feed pipe is fixedly sleeved with a separation mechanism for collecting small particles of scrap metal;

[0008] The lower surface of the conveying shell is fixedly connected with a bracket, the outer wall of the bracket is fixedly connected with an air pump, the air inlet end of the air pump is fixedly connected with an air inlet hose, and the outer wall of the air outlet end of the air inlet hose is obliquely fixedly connected with a limiting mechanism for stabilizing the scrap metal fragments;

[0009] The air outlet end of the vacuum pump is fixedly connected to a connecting pipe, and the air outlet end of the connecting pipe is fixedly connected to an auxiliary conveying mechanism for conveying small particles of scrap metal;

[0010] The pipe wall of the connecting pipe is tilted and fixedly connected to a protective mechanism for reducing the kinetic energy of falling scrap metal fragments.

[0011] In the above-mentioned scrap metal conveying device, the separation mechanism includes an outer cover fixedly sleeved with the outer wall of the feed pipe, the inner wall of the outer cover is fixedly connected with a separation ring, the inner wall of the separation ring is fixedly connected to the outer wall of the feed pipe, the separation ring divides the outer cover into a collection area and a reflux area, the outer wall of the feed pipe located in the collection area is provided with a plurality of collecting through holes, the outer wall of the feed pipe located in the reflux area is obliquely fixedly connected with an air guide ring, the outer wall of the outer cover is fixedly connected with a U-shaped connecting pipe, the two pipe openings of the U-shaped connecting pipe are respectively located inside the collection area and the reflux area, the pipe wall of the U-shaped connecting pipe is fixedly connected with the air intake end of the air intake hose, the bottom end of the outer cover is fixedly connected with a plurality of telescopic rods, the bottom end of the telescopic rod is fixedly connected to the upper surface of the support frame, the outer wall of the telescopic rod is sleeved with a support spring, the upper surface of the support frame is provided with a circular hole, and the hole wall of the circular hole is movably connected with a control component.

[0012] In the above-mentioned scrap metal conveying device, the control component includes a T-shaped insulating rod, the top end of the T-shaped insulating rod is fixedly connected to the lower surface of the outer cover, the rod wall of the T-shaped insulating rod is fixedly embedded with a conductive variable resistance rod, the rod wall of the T-shaped insulating rod is movably sleeved with a conductive ring that matches the conductive variable resistance rod, and the lower surface of the conductive ring is fixedly connected to the upper surface of the support frame.

[0013] In the above-mentioned scrap metal conveying device, the limiting mechanism includes a conduit which is obliquely fixedly connected to the outer wall of the air outlet end of the air inlet hose, the air inlet end of the conduit passes through the inner wall of the conveying shell and is fixedly connected to an arc-shaped collecting plate, the top end of the arc-shaped collecting plate is fixedly connected to the top inner wall of the conveying shell, the upper surface of the arc-shaped collecting plate is in sealing contact with the inner wall of the arc-shaped conveyor belt, both ends of the arc-shaped collecting plate are provided with connecting surfaces which match the outer wall of the conveying roller, the connecting surfaces at both ends of the arc-shaped collecting plate are in sealing contact with the outer walls of the two conveying rollers respectively, and the bottom end of the arc-shaped collecting plate is fixedly connected to the inner wall of the conveying shell with a plurality of reinforcing rods.

[0014] In the above-mentioned scrap metal conveying device, the top inner wall of the arc-shaped collecting plate is fixedly connected with an arc-shaped supporting mesh plate, and the top end of the arc-shaped supporting mesh plate is in active contact with the inner wall of the arc-shaped conveyor belt.

[0015] In the above-mentioned scrap metal conveying device, the auxiliary conveying mechanism includes a conveying pipe fixedly connected to the air outlet end of the connecting pipe, the top of the conveying pipe is fixedly connected to a small cyclone separator, the outer wall of the small cyclone separator is fixedly connected to a fixing plate, the bottom end of the fixing plate is fixedly connected to the upper surface of the conveying shell, the discharge end of the conveying shell is fixedly connected to a guide plate, and the discharge end of the small cyclone separator is located directly above the guide plate.

[0016] In the above-mentioned scrap metal conveying device, the protective mechanism includes a square connecting cover which is fixedly connected to the outer wall of the connecting pipe at an angle, the inner wall of the square connecting cover is fixedly connected with a fine-mesh filter screen, the outer wall of the square connecting cover is provided with a rectangular through hole, and the hole wall of the rectangular through hole is sealingly and movably connected with an L-shaped gate plate, the outer wall of the L-shaped gate plate is fixedly embedded with a permanent magnet block, the outer wall of the square connecting cover is fixedly connected with an electromagnet matched with the permanent magnet block, the outer wall of the square connecting cover is fixedly connected with an air supply pipe, the air outlet end of the air supply pipe is fixedly connected with an annular cover, the inner wall of the annular cover is fixedly sleeved with the outer wall of the bottom end of the feed pipe, and the outer wall of the feed pipe located at the annular cover is inclined with multiple air injection holes.

[0017] In the above-mentioned scrap metal conveying device, the magnetic poles of the electromagnet and the permanent magnet block on the opposite side are the same, and the L-shaped gate is located on the outer wall inside the square connecting cover and is fixedly connected to the limiting block.

[0018] Compared with the existing technology, the advantages of a scrap metal conveying device are:

[0019] 1. Through the separation mechanism, vacuum pump, air intake hose and auxiliary conveying mechanism, when the broken scrap metal fragments need to be transported to the smelting furnace through the conveying device to be transformed into recycled metal again, the vacuum pump is started first, and the vacuum pump sucks the air inside the separation mechanism through the air intake hose, and the separation mechanism can carry the small scrap metal particles located inside the feed pipe when it inhales air from the outside to replenish it, and then these separated small scrap metal particles are sent into the smelting furnace through the auxiliary conveying mechanism. This mechanism enables the scrap metal conveying device to have the function of separating and conveying small scrap metal particles, avoiding the small scrap metal particles from flying and falling outside the conveying device, effectively improving the environmental protection performance of the conveying device, and being able to improve the reliability of the use of the conveying device.

[0020] 2. Through the protection mechanism and control components, when the scrap metal conveying device is used, the conductive ring contacts the conductive variable resistance rod to make the electromagnet generate magnetic repulsion, and the air in the connecting pipe can enter the air supply pipe and be ejected through the jet hole to form an energy-reducing air curtain. Then, when the scrap metal fragments falling from the top of the feed pipe pass through the energy-reducing air curtain, they are blocked by the upwardly ejected airflow and their kinetic energy is reduced, so that the scrap metal fragments will not fall to the outside of the conveying device. In addition, the jet volume of the energy-reducing air curtain can be adjusted through the control component, so that the jet volume of the energy-reducing air curtain is proportional to the amount of scrap metal fragments entering the feed pipe, thereby improving the effect of energy reduction of the scrap metal fragments. The mechanism reduces the kinetic energy of the scrap metal fragments falling to avoid the scrap metal fragments falling to the outside of the conveying device, which can not only reduce the impact damage of the scrap metal fragments on the arc conveyor belt, but also eliminate the need for the staff to collect the fallen scrap metal fragments, thereby reducing the labor intensity of the staff and improving the reliability of the use of the scrap metal conveying device.

[0021] 3. Through the setting of the limiting mechanism, when the scrap metal fragments are transported by the arc conveyor belt, a downward-flowing airflow layer can be formed on the top of the arc conveyor belt, and then the scrap metal fragments located above the air inlet hole are limited by negative suction, and the scrap metal fragments at other positions are limited by a certain extrusion force exerted by the downward-flowing airflow layer. In addition, during the process of air suction by the air inlet hole, the small scrap metal particles left in the scrap metal fragments can be further separated to avoid these small scrap metal particles from clogging the surface gaps of the arc conveyor belt. This can not only prevent a large amount of scrap metal fragments from accumulating on the arc conveyor belt, but also reduce the friction between the scrap metal fragments and the surface of the arc conveyor belt. This mechanism can effectively improve the stability of the conveying of scrap metal on the conveying device, not only reduce the wear rate of the conveyor belt in the conveying device, but also improve the reliability of the use of the conveying device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a scrap metal conveying device provided by the present invention;

[0023] Figure 2 It is a structural schematic diagram of a part of a separation mechanism in a scrap metal conveying device provided by the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of a part of a limiting mechanism in a scrap metal conveying device provided by the present invention;

[0025] Figure 4 It is a structural schematic diagram of the left side of the discharge end of a scrap metal conveying device provided by the present invention;

[0026] Figure 5 It is a structural schematic diagram of a protective mechanism in a scrap metal conveying device provided by the present invention;

[0027] Figure 6 It is a structural schematic diagram of a conveying roller part in a scrap metal conveying device provided by the present invention;

[0028] Figure 7 It is a structural schematic diagram of a square connecting cover part in a scrap metal conveying device provided by the present invention;

[0029] Figure 8 It is a structural schematic diagram of a control component in a scrap metal conveying device provided by the present invention.

[0030] In the figure: 1 conveying shell, 2 conveying motor, 3 arc-shaped conveying belt, 4 conveying roller, 5 separation mechanism, 51 outer cover, 52 separation ring, 53 collection area, 54 reflow area, 55 collection through hole, 56 air guide ring, 57 U-shaped connecting pipe, 58 telescopic rod, 59 support spring, 6 limit mechanism, 61 guide tube, 62 arc-shaped collection plate, 63 reinforcing rod, 7 auxiliary conveying mechanism, 71 conveying pipe, 72 small cyclone separator, 73 fixing plate, 74 guide plate, 8 protection mechanism, 81 square shaped connecting cover, 82 rectangular through hole, 83 L-shaped gate, 84 permanent magnet block, 85 electromagnet, 86 air supply pipe, 87 annular cover, 88 jet hole, 89 fine mesh filter, 9 control component, 91 T-shaped insulating rod, 92 conductive variable resistance rod, 93 conductive ring, 10 fixing frame, 11 air intake circular hole, 12 support bar, 13 support frame, 14 feed pipe, 15 feed hopper, 16 bracket, 17 vacuum pump, 18 air intake hose, 19 connecting pipe, 20 arc-shaped support mesh plate, 21 limit block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figure 1-Figure 8 As shown, a scrap metal conveying device includes a conveying shell 1, a conveying motor 2, an arc conveyor belt 3 and two conveying rollers 4 matched with the arc conveyor belt 3, the two conveying rollers 4 are connected to the two sides of the conveying shell 1 through bearings, the arc conveyor belt 3 is sleeved on the two conveying rollers 4, the outer wall of the conveying shell 1 is fixedly connected with a fixing frame 10, the conveying motor 2 is fixedly connected with the outer wall of the fixing frame 10 through bolts, the output end of the conveying motor 2 is fixedly connected with the side end of one of the conveying rollers 4, the outer wall of the middle area of ​​the arc conveyor belt 3 is provided with a plurality of air intake holes 11, the upper surface of the feed end of the conveying shell 1 is fixedly connected with two support bars 12, the upper surfaces of the two support bars 12 are commonly fixedly connected with a support frame 13, the inner wall of the support frame 13 is movably connected with a feed pipe 14, and the top of the feed pipe 14 is fixedly connected with a feed hopper 15.

[0033] The outer wall of the feed pipe 14 is fixedly sleeved with a separation mechanism 5 for collecting small particles of scrap metal, and the separation mechanism 5 includes an outer cover 51 fixedly sleeved with the outer wall of the feed pipe 14, and the inner wall of the outer cover 51 is fixedly connected with a separation ring 52, and the inner wall of the separation ring 52 is fixedly connected to the outer wall of the feed pipe 14, and the separation ring 52 separates the outer cover 51 into a collection area 53 and a reflow area 54, and the outer wall of the feed pipe 14 located in the collection area 53 is provided with a plurality of collection through holes 55, and the outer wall of the feed pipe 14 located in the reflow area 54 is obliquely fixedly connected with an air guide ring 56, and the outer wall of the outer cover 51 is fixedly connected with a U-shaped connecting pipe 57, and the two pipe openings of the U-shaped connecting pipe 57 are respectively located inside the collection area 53 and the reflow area 54, and the pipe wall of the U-shaped connecting pipe 57 is fixedly connected with the air inlet end of the air inlet hose 18, and the bottom end of the outer cover 51 is fixedly connected with a plurality of telescopic rods 58, and the bottom end of the telescopic rods 58 is connected to the support frame 1 3 is fixedly connected, the outer wall of the telescopic rod 58 is sleeved with a support spring 59, the upper surface of the support frame 13 is opened with a circular hole, and the hole wall of the circular hole is movably connected with a control component 9, the control component 9 includes a T-shaped insulating rod 91, the top of the T-shaped insulating rod 91 is fixedly connected to the lower surface of the outer cover 51, the rod wall of the T-shaped insulating rod 91 is fixedly embedded with a conductive variable resistance rod 92, the rod wall of the T-shaped insulating rod 91 is movably sleeved with a conductive ring 93 matched with the conductive variable resistance rod 92, the resistance of the conductive variable resistance rod 92 gradually increases from the top to the bottom, the lower surface of the conductive ring 93 is fixedly connected to the upper surface of the support frame 13, the mechanism enables the scrap metal conveying device to have the function of separating and conveying small scrap metal particles, avoids the situation that small scrap metal particles are flying and falling outside the conveying device, effectively improves the environmental protection performance of the conveying device, and improves the reliability of the use of the conveying device.

[0034] A bracket 16 is fixedly connected to the lower surface of the conveying shell 1, and an air pump 17 is fixedly connected to the outer wall of the bracket 16. The air inlet end of the air pump 17 is fixedly connected to an air inlet hose 18. The outer wall of the air outlet end of the air inlet hose 18 is obliquely fixedly connected to a limiting mechanism 6 for stabilizing the scrap metal fragments. The limiting mechanism 6 includes a conduit 61 obliquely fixedly connected to the outer wall of the air outlet end of the air inlet hose 18. The air inlet end of the conduit 61 passes through the inner wall of the conveying shell 1 and is fixedly connected to an arc-shaped collecting plate 62. The inner wall of the top end of the arc-shaped collecting plate 62 is fixedly connected to an arc-shaped supporting mesh plate 20. The top end of the arc-shaped supporting mesh plate 20 is in active contact with the inner wall of the arc-shaped conveying belt 3. The arc-shaped supporting mesh plate 20 can be used to stabilize the arc-shaped conveying belt 3. Support, the top of the arc-shaped collecting plate 62 is fixedly connected to the top inner wall of the conveying shell 1, the upper surface of the arc-shaped collecting plate 62 is in sealing contact with the inner wall of the arc-shaped conveying belt 3, and both ends of the arc-shaped collecting plate 62 are provided with connecting surfaces that match the outer wall of the conveying roller 4. The connecting surfaces at both ends of the arc-shaped collecting plate 62 are in sealing contact with the outer walls of the two conveying rollers 4 respectively, and the bottom end of the arc-shaped collecting plate 62 is fixedly connected to the inner wall of the conveying shell 1 with multiple reinforcing rods 63. The limiting mechanism 6 can effectively improve the stability of the conveying of scrap metal on the conveying device, which not only reduces the wear rate of the conveying belt in the conveying device, but also eliminates the need for staff to collect the fallen scrap metal fragments, thereby reducing the labor intensity of the staff.

[0035] The air outlet end of the vacuum pump 17 is fixedly connected to a connecting pipe 19, and the air outlet end of the connecting pipe 19 is fixedly connected to an auxiliary conveying mechanism 7 for conveying small particles of scrap metal. The auxiliary conveying mechanism 7 includes a feed pipe 71 fixedly connected to the air outlet end of the connecting pipe 19, and the top of the feed pipe 71 is fixedly connected to a small cyclone separator 72. The outer wall of the small cyclone separator 72 is fixedly connected to a fixing plate 73, and the bottom end of the fixing plate 73 is fixedly connected to the upper surface of the conveying shell 1, and the discharge end of the conveying shell 1 is fixedly connected to a guide plate 74, and the discharge end of the small cyclone separator 72 is located directly above the guide plate 74.

[0036] The wall of the connecting pipe 19 is tilted and fixedly connected to a protective mechanism 8 for reducing the kinetic energy of the falling scrap metal fragments. The protective mechanism 8 includes a square connecting cover 81 that is tilted and fixedly connected to the outer wall of the connecting pipe 19. The inner wall of the square connecting cover 81 is fixedly connected to a fine-mesh filter 89. The outer wall of the square connecting cover 81 is provided with a rectangular through hole 82, and the hole wall of the rectangular through hole 82 is sealed and movably connected to an L-shaped gate plate 83. The outer wall of the L-shaped gate plate 83 is fixedly embedded with a permanent magnet block 84. The outer wall of the square connecting cover 81 is fixedly connected to an electromagnet 85 that cooperates with the permanent magnet block 84. The outer wall of the square connecting cover 81 is fixedly connected to There is an air supply pipe 86, and the air outlet end of the air supply pipe 86 is fixedly connected to an annular cover 87. The inner wall of the annular cover 87 is fixedly sleeved with the outer wall of the bottom end of the feed pipe 14. The outer wall of the feed pipe 14 located at the annular cover 87 is inclined to open a plurality of air injection holes 88. The magnetic poles of the electromagnet 85 and the permanent magnet block 84 on the opposite side are the same. The L-shaped gate plate 83 is located on the outer wall inside the square connecting cover 81 and is fixedly connected to the limiting block 21. The limiting block 21 can prevent the L-shaped gate plate 83 from detaching from the square connecting cover 81. This mechanism reduces the kinetic energy of the falling scrap metal fragments to prevent the scrap metal fragments from falling to the outside of the conveying device.

[0037] The electromagnet 85, the conductive variable resistance rod 92 and the conductive ring 93 are electrically connected to the external power supply through wires, and the vacuum pump 17 is electrically connected to the external power supply through a control switch. The above electrical connection is a prior art and will not be described in detail here.

[0038] The operating principle of the present invention is described as follows: when the broken scrap metal fragments need to be transported to the smelting furnace through a conveying device to be transformed into recycled metal again, the vacuum pump 17 is first started, and the vacuum pump 17 sucks the air in the collection area 53 and the reflux area 54 of the outer cover 51 through the air intake hose 18 and the U-shaped connecting pipe 57. Then the scrap metal fragments enter the feed pipe 14 through the feed hopper 15. When the scrap metal fragments are located at the top of the feed pipe 14, since the collection area 53 of the outer cover 51 is sucked by the U-shaped connecting pipe 57, the collection area 53 needs to be supplemented by air through the collection through hole 55 to maintain the balance of internal and external air pressures. In the process of air replenishment, the small scrap metal particles in the scrap metal fragments will be blown away by the air. The small scrap metal particles are moved and separated from the larger scrap metal fragments, and then the small scrap metal particles are transported to the small cyclone separator 72 through the air intake hose 18, the vacuum pump 17, the connecting pipe 19 and the feed pipe 71. Due to the obstruction of the fine-mesh filter 89, the small scrap metal particles will not enter the square connecting cover 81 to cause interference. Then they are separated by the small cyclone separator 72 and fall into the guide plate 74, and finally transported to the smelting furnace to be converted into recycled metal. This mechanism enables the scrap metal conveying device to have the function of separating and conveying small scrap metal particles, avoids the small scrap metal particles from flying and falling outside the conveying device, effectively improves the environmental protection performance of the conveying device, and can improve the reliability of the use of the conveying device.

[0039] When the scrap metal conveying device is in use, the conductive ring 93 contacts the conductive variable resistance rod 92 to make the electromagnet 85 generate magnetic repulsion, which pushes the permanent magnet block 84 to move outward, and the permanent magnet block 84 drives the L-shaped gate plate 83 to move outward, and the L-shaped gate plate 83 is in a half-open state in the square connecting cover 81. At this time, part of the air conveyed to the connecting pipe 19 passes through the fine mesh filter 89 and enters the square connecting cover 81, and then passes through the L-shaped gate plate 83 and enters the air supply pipe 86, and finally passes through the annular cover 87 and the jet hole 88 to be sprayed upward obliquely, and forms an energy-reducing air curtain at the bottom of the feed pipe 14. Then, when the scrap metal fragments falling from the top of the feed pipe 14 pass through the energy-reducing air curtain, they are blocked by the upwardly ejected air flow and their kinetic energy is reduced, and then they fall onto the arc conveyor belt 3 at a lower speed. At this time, due to the reduction in the kinetic energy of the scrap metal fragments, the rebound force of the scrap metal fragments falling onto the arc conveyor belt 3 is also reduced, and the scrap metal fragments will not fall to the outside of the conveying device.

[0040] At the same time, after the air of the energy-reducing air curtain flows along the inner wall of the feed pipe 14 to the air guide ring 56, it is first replenished to the reflow area 54 of the outer cover 51 to maintain the air pressure balance in the reflow area 54 of the outer cover 51. In addition, as the amount of scrap metal fragments entering the feed hopper 15 increases, a large amount of scrap metal fragments will increase the downward movement distance of the feed hopper 15, the feed pipe 14 and the outer cover 51. At this time, the telescopic rod 58 contracts, and the outer cover 51 pushes the T-shaped insulating rod 91 downward, and the conductive variable resistance rod 92 on the T-shaped insulating rod 91 The conductive ring 93 also moves downward, causing the conductive ring 93 to slide to the low resistance area of ​​the conductive variable resistance rod 92, thereby reducing the resistance of the electromagnet 85 circuit. Then, the electromagnetic force of the electromagnet 85 in the same circuit as the conductive variable resistance rod 92 increases, and the electromagnet 85 can continue to push the permanent magnet block 84 with a greater magnetic repulsion. The permanent magnet block 84 drives the L-shaped gate plate 83 to move further outward, increasing the amount of air delivered by the square connection cover 81, allowing more air to be ejected through the jet hole 88, ensuring that the energy-reducing air curtain can reliably deal with a large amount of scrap metal The need to reduce the kinetic energy of the fragments is met to avoid the situation where the kinetic energy of the scrap metal fragments is reduced and missed. On the contrary, after the amount of scrap metal fragments entering the feed hopper 15 is reduced, the feed hopper 15 is squeezed and lowered by the weight of the scrap metal fragments, and the telescopic rod 58 moves up to a corresponding height under the restoring force of the support spring 59, and the conductive ring 93 slides to the high resistance area of ​​the conductive variable resistance rod 92, reducing the magnetic repulsion of the electromagnet 85, and under the magnetic attraction of the permanent magnet block 84, the L-shaped gate plate 83 is partially retracted, so that the air delivery volume of the square connecting cover 81 is reduced, and excessive air is prevented from hindering the scrap metal fragments from falling normally onto the arc conveyor belt 3. The mechanism reduces the kinetic energy of the scrap metal fragments falling to avoid the scrap metal fragments falling to the outside of the conveying device, which can not only reduce the impact damage of the scrap metal fragments on the arc conveyor belt 3, but also eliminate the need for the staff to collect the fallen scrap metal fragments, thereby reducing the labor intensity of the staff and improving the reliability of the use of the scrap metal conveying device.

[0041] When the scrap metal fragments are transported by the arc conveyor belt 3, the conveying motor 2 rotates the arc conveyor belt 3 through the conveying roller 4 to transport the scrap metal fragments. At the same time, the vacuum pump 17 sucks the air in the duct 61 through the air intake hose 18, and the duct 61 sucks the air on the top of the arc collecting plate 62, so that a negative pressure environment is formed on the top of the arc collecting plate 62. Then, the top space of the arc collecting plate 62 under negative pressure sucks the outside air through the air intake hole 11 to ensure the air pressure balance. Since a large amount of air is sucked by the air intake holes 11, a downward airflow layer can be formed on the upper surface of the arc conveyor belt 3. Then, the scrap metal fragments above the air intake holes 11 are limited by negative suction, and the scrap metal fragments at other positions are subjected to a certain pressure by the downward airflow layer. The extrusion pressure further ensures that the scrap metal fragments can be stably parked on the arc conveyor belt 3, and during the process of the air intake circular hole 11 sucking air, the small scrap metal particles left in the scrap metal fragments can be further separated to prevent these small scrap metal particles from clogging the surface gaps of the arc conveyor belt 3, thereby ensuring the surface adhesion of the arc conveyor belt 3, so that the scrap metal fragments can stably contact the surface of the arc conveyor belt 3, which can not only prevent a large amount of scrap metal fragments from accumulating on the arc conveyor belt 3, but also reduce the friction between the scrap metal fragments and the surface of the arc conveyor belt 3. This mechanism can effectively improve the stability of the conveying of scrap metal on the conveying device, which can not only reduce the wear rate of the conveyor belt in the conveying device, but also improve the reliability of the use of the conveying device.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A scrap metal conveying device, comprising a conveying housing (1), a conveying motor (2), an arc-shaped conveying belt (3) and two conveying rollers (4) matched with the arc-shaped conveying belt (3), characterized in that: The two conveying rollers (4) are connected to both sides of a conveying shell (1) via bearings, the arc-shaped conveying belt (3) is sleeved on the two conveying rollers (4), the outer wall of the conveying shell (1) is fixedly connected to a fixing frame (10), the conveying motor (2) is fixedly connected to the outer wall of the fixing frame (10) via bolts, the output end of the conveying motor (2) is fixedly connected to the side end of one of the conveying rollers (4), a plurality of air inlet holes (11) are provided on the outer wall of the middle area of ​​the arc-shaped conveying belt (3), the upper surface of the feed end of the conveying shell (1) is fixedly connected to two support bars (12), the upper surfaces of the two support bars (12) are fixedly connected to a support frame (13), the inner wall of the support frame (13) is movably connected to a feed pipe (14), the top end of the feed pipe (14) is fixedly connected to a feed hopper (15), and the outer wall of the feed pipe (14) is fixedly sleeved with a separation mechanism (5) for collecting small particles of scrap metal; The lower surface of the conveying shell (1) is fixedly connected to a bracket (16), the outer wall of the bracket (16) is fixedly connected to an air pump (17), the air inlet end of the air pump (17) is fixedly connected to an air inlet hose (18), and the outer wall of the air outlet end of the air inlet hose (18) is obliquely fixedly connected to a limiting mechanism (6) for stabilizing the scrap metal fragments; The air outlet end of the air pump (17) is fixedly connected to a connecting pipe (19), and the air outlet end of the connecting pipe (19) is fixedly connected to an auxiliary conveying mechanism (7) for conveying small particles of scrap metal; The wall of the connecting pipe (19) is tilted and fixedly connected to a protective mechanism (8) for reducing the kinetic energy of falling scrap metal fragments; The separation mechanism (5) comprises an outer cover (51) fixedly sleeved with the outer wall of the feed pipe (14); the inner wall of the outer cover (51) is fixedly connected with a separator ring (52); the inner wall of the separator ring (52) is fixedly connected with the outer wall of the feed pipe (14); the separator ring (52) separates the outer cover (51) into a collection area (53) and a recirculation area (54); the outer wall of the feed pipe (14) located in the collection area (53) is provided with a plurality of collection through holes (55); the outer wall of the feed pipe (14) located in the recirculation area (54) is obliquely fixedly connected with an air guide ring (56); the outer wall of the outer cover (51) is fixedly connected with the outer wall of the feed pipe (14) A U-shaped connecting pipe (57) is fixedly connected, the two pipe openings of the U-shaped connecting pipe (57) are respectively located inside the collecting area (53) and the reflow area (54), the pipe wall of the U-shaped connecting pipe (57) is fixedly connected to the air inlet end of the air inlet hose (18), a plurality of telescopic rods (58) are fixedly connected to the bottom end of the outer cover (51), the bottom ends of the telescopic rods (58) are fixedly connected to the upper surface of the support frame (13), the outer walls of the telescopic rods (58) are sleeved with support springs (59), the upper surface of the support frame (13) is provided with a circular hole, and the hole wall of the circular hole is movably connected to a control component (9); The limiting mechanism (6) comprises a conduit (61) which is fixedly connected to the outer wall of the air outlet end of the air inlet hose (18) at an angle, the air inlet end of the conduit (61) passes through the inner wall of the conveying shell (1) and is fixedly connected to an arc-shaped collecting plate (62), the top end of the arc-shaped collecting plate (62) is fixedly connected to the top inner wall of the conveying shell (1), the upper surface of the arc-shaped collecting plate (62) is in sealing contact with the inner wall of the arc-shaped conveying belt (3), both ends of the arc-shaped collecting plate (62) are provided with connecting surfaces which match the outer wall of the conveying roller (4), the connecting surfaces at both ends of the arc-shaped collecting plate (62) are in sealing contact with the outer walls of the two conveying rollers (4), and the bottom end of the arc-shaped collecting plate (62) is fixedly connected to the inner wall of the conveying shell (1) by a plurality of reinforcing rods (63); The protection mechanism (8) comprises a square connection cover (81) which is fixedly connected to the outer wall of the connection pipe (19) in an inclined manner, the inner wall of the square connection cover (81) is fixedly connected to a fine-mesh filter (89), the outer wall of the square connection cover (81) is provided with a rectangular through hole (82), and the hole wall of the rectangular through hole (82) is sealed and movably connected to an L-shaped gate plate (83), the outer wall of the L-shaped gate plate (83) is fixedly embedded with a permanent magnet block (84), the outer wall of the square connection cover (81) is fixedly connected to an electromagnet (85) which cooperates with the permanent magnet block (84), the outer wall of the square connection cover (81) is fixedly connected to an air supply pipe (86), the air outlet end of the air supply pipe (86) is fixedly connected to an annular cover (87), the inner wall of the annular cover (87) is fixedly sleeved with the outer wall of the bottom end of the feed pipe (14), and the outer wall of the feed pipe (14) located at the annular cover (87) is obliquely provided with a plurality of air injection holes (88).

2. A scrap metal conveying device according to claim 1, characterized in that: The control assembly (9) comprises a T-shaped insulating rod (91), the top end of the T-shaped insulating rod (91) being fixedly connected to the lower surface of the outer cover (51), a conductive variable resistance rod (92) being fixedly embedded in the rod wall of the T-shaped insulating rod (91), a conductive ring (93) matching the conductive variable resistance rod (92) being movably sleeved on the rod wall of the T-shaped insulating rod (91), and a lower surface of the conductive ring (93) being fixedly connected to the upper surface of the support frame (13).

3. A scrap metal conveying device according to claim 1, characterized in that: The inner wall at the top end of the arc-shaped collecting plate (62) is fixedly connected to an arc-shaped supporting mesh plate (20), and the top end of the arc-shaped supporting mesh plate (20) is in active contact with the inner wall of the arc-shaped conveyor belt (3).

4. A scrap metal conveying device according to claim 1, characterized in that: The auxiliary conveying mechanism (7) comprises a conveying pipe (71) fixedly connected to the air outlet end of the connecting pipe (19); the top end of the conveying pipe (71) is fixedly connected to a small cyclone separator (72); the outer wall of the small cyclone separator (72) is fixedly connected to a fixing plate (73); the bottom end of the fixing plate (73) is fixedly connected to the upper surface of the conveying shell (1); the discharge end of the conveying shell (1) is fixedly connected to a guide plate (74); the discharge end of the small cyclone separator (72) is located directly above the guide plate (74).

5. The scrap metal conveying device according to claim 1, characterized in that: The electromagnet (85) has the same magnetic pole as the permanent magnet block (84) on the opposite side, and the L-shaped gate plate (83) is located on an outer wall inside the square connection cover (81) and is fixedly connected to the limit block (21).

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