Crushing and recycling device for light and thin waste steel

Abstract

The invention relates to the field of scrap steel crushing and recycling, and discloses a light and thin scrap steel crushing and recycling device which comprises a conveying belt and further comprises a bending unit, a groove pressing unit and a twisting unit. The bending unit is arranged on one side of the conveying belt. The groove pressing unit is arranged on the bending unit; the twisting unit is arranged on the groove pressing unit; the bending unit comprises a shell assembly arranged on one side of the conveying belt; the shell assembly comprises an air channel arranged on the shell, a shaft hole formed in the shell and a feeding groove formed in the shell. And the compression roller assembly is arranged in the shell assembly. The waste steel sheets are rolled to be bent, so that the waste steel sheets are more easily folded and interlocked, and the block formed by pressing the waste steel sheets with a large number of interlocking structures inside is higher in structural strength and is more difficult to scatter or disintegrate in the transportation process; and the transportation cost can be saved, manpower waste caused by arrangement of scattered waste steel sheets can be reduced, and the working efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of scrap steel crushing and recycling, and in particular to a device for crushing and recycling light and thin scrap steel. Background Art

[0002] Thin scrap refers to thin metal waste, typically generated during the production process or as discarded metal products, such as iron sheets, metal cans, metal films, metal sheets, stainless steel plates, aluminum plates, copper plates, and galvanized steel plates. The production and consumption of this thin scrap generates significant amounts of waste. Recycling and reuse can conserve resources and energy while reducing environmental pollution. Therefore, the metal recycling and processing industry is crucial for the recovery and reuse of thin scrap.

[0003] The light and thin scrap steel crushing, recycling and reuse device is a device specially used to process light and thin scrap steel materials. Light and thin scrap steel materials, such as scrap steel cans, thin steel plates, small household appliance casings, etc., are not easy to compress and remelt directly. Therefore, the crushing, recycling and reuse device is designed to effectively separate, compress and process these materials for recycling.

[0004] In the existing recycling process of thin and light scrap steel, compression and packaging steps have always been important steps, which involve transportation portability and transportation costs. The existing compression and packaging process is to dump the processed metal sheets into a hydraulic compressor and compress them into blocks, and then bundle the compressed metal blocks with metal belts or plastic belts for packaging. Due to the wide source of metal sheets, the surface of the metal sheets is generally not clean and flat. There are often paint, stains or plastic coatings on the surface of the metal sheets, which makes the upper and lower layers of metal sheets not completely fit together during the compression process, resulting in the compressed metal sheets being easily broken or scattered during transportation, increasing the cleaning cost and workload.

[0005] If bundling is used for tightening, it will increase costs and processes, making the already meager profits even lower. Therefore, a device is needed that can tighten during the compression process, so that the finished products compressed into blocks are tighter and stronger, reducing costs and improving efficiency.

[0006] During the compression process, since the shape of the metal sheets is irregular and the volume of the compression equipment is fixed, the finished products compressed into blocks will have the same volume but different weights, resulting in uneven actual transportation volume and increased transportation costs. Therefore, a device that can control the actual compressed weight is needed to ensure that the compressed volume and weight are within a reasonable range. Summary of the Invention

[0007] In view of the problems existing in the prior art that the finished product is prone to breakage or dispersion after being compressed into blocks and the weight of the finished product is uneven, a device for crushing, recycling and reusing light and thin scrap steel is proposed.

[0008] The present application provides a device for crushing, recycling and reusing light and thin scrap steel, and its purpose is to: improve the structural strength of the finished product compressed into blocks and control the weight difference of the finished product within a reasonable range.

[0009] A device for crushing, recycling and reusing light and thin scrap steel includes a conveyor belt, and also includes a bending unit, a grooving unit and a twisting unit; The bending unit is arranged on one side of the conveyor belt; the grooving unit is arranged on the bending unit; the twisting unit is arranged on the grooving unit; The bending unit includes: a housing assembly arranged on one side of the conveyor belt; the housing assembly includes an anti-rolling frame arranged on one side of the conveyor belt, a housing arranged on the anti-rolling frame, a receiving port arranged on the housing, an inclined air window opened on the housing, a flat air window opened on the housing, an air duct arranged on the housing, a shaft hole opened on the housing, and a feeding groove opened on the housing; A pressure roller assembly is arranged inside the housing assembly.

[0010] Adopting the above technical solution, after the light and thin scrap steel is classified and preliminarily crushed, fragments of various shapes will be formed, and the surfaces of the fragments are often covered with stains, dust, paint or composite materials, etc. When being compressed into blocks, due to various substances on the surface of the fragments, the structural strength of the compressed scrap steel blocks is low, and they are prone to scatter or disintegrate during transportation.

[0011] Further, the pressure roller assembly includes a through shaft arranged on the shaft hole, a roller arranged on the through shaft, a male head arranged on the roller, and a female head arranged on the roller; The top end of the male head coincides with the bottom end of the female head, and the two rollers rotate synchronously.

[0012] Adopting the above technical solution, during the falling process of the scrap steel sheet, after its movement state is disturbed by the airflow of the inclined air window, it randomly falls on the roller. The through shaft is externally connected to a power device. After the through shaft rotates, it drives one of the rollers. Since the male head and the female head coincide, it can drive the other roller to rotate. After the scrap steel sheet falls into the gap between the male head and the female head, it is squeezed by the male head into the groove of the female head, making the scrap steel sheet become bent, and then it falls into the opposite chamber of the flat air window for temporary storage.

[0013] Further, the grooving unit includes a box body assembly arranged on one side of the housing assembly; a synchronous frame assembly arranged inside the housing assembly; an elastic frame assembly arranged on the outer wall of the box body assembly; The box body assembly includes a hydraulic tank arranged on one side of the outer shell, a downward pressing groove opened at the top of the hydraulic tank, a feeding port opened on one side of the hydraulic tank, a spring seat arranged on the hydraulic tank, a double-strand tension spring arranged on the spring seat, a support seat arranged on one pair of opposite sides of the hydraulic tank, a taking-out port opened on the other side of the hydraulic tank, a lifting door arranged on the taking-out port, and short rails arranged on both sides of the lifting door; The lifting door is slidably installed in the short rails.

[0014] With the above technical solution, the box body assembly is an important part in the compression process. The hydraulic tank is of a rectangular box structure, and the pressed scrap steel blocks are also rectangular, which are easy to stack and superimpose. The downward pressing groove is the entry position of the hydraulic equipment. The feeding port and the feeding groove are not always unobstructed. The taking-out port on the hydraulic tank is used to take out the compressed scrap steel blocks. The lifting door is slidably opened, and the short rails have high structural strength, which is beneficial to the safety and stability of the hydraulic tank during the compression process.

[0015] Furthermore, the synchronous frame assembly includes a ratchet plate arranged on one side of the hydraulic tank, a push block arranged on the ratchet plate, an opening and closing door plate arranged on the ratchet plate, an opening opened on the opening and closing door plate, a driving block arranged on the opening and closing door plate, a pressing plate arranged on the driving block, a torsion groove opened on the pressing plate, and a force equalizing plate arranged on the pressing plate; One end of the double-strand tension spring is fixedly connected to the spring seat, and the other end is fixedly connected to the push block. The opening and closing door plate and the pressing plate sandwich the side wall of the hydraulic tank inside.

[0016] With the above technical solution, the ratchet plate restricts the easy movement direction of the opening and closing door plate to move in the direction of the downward pressing groove. That is, when the pressing plate rises, it drives the ratchet plate to rise, and the ratchet plate will not receive too much resistance. The push block and the spring seat are fixed with a double-strand tension spring. That is, under the action of the double-strand tension spring, the pressing plate needs to overcome the tension of the double-strand tension spring when rising. In other words, elastic potential energy is accumulated for the double-strand tension spring.

[0017] Furthermore, the spring frame assembly includes a T-shaped frame arranged on one side of the hydraulic tank, a pawl arranged on the T-shaped frame, an expansion spring arranged on the pawl, a rod seat arranged on the pawl, an intermediate rod arranged on the rod seat, a tension rod arranged on the intermediate rod, and a floating plate arranged at the end of the tension rod; One end of the expansion spring is fixedly connected to the pawl, and the other end is fixedly connected to the end of the T-shaped frame. The hydraulic tank is fixedly connected to the anti-roll frame.

[0018] With the above technical solution, the T-shaped frame is fixed on the side wall outside the hydraulic tank. There is a groove in the middle of the T-shaped frame to limit the movement of the tension rod. There are hinge positions at both ends of the T-shaped frame, and the ratchet pawl can rotate at the hinge positions. The two expansion springs on both sides pull the ratchet pawls on both sides towards the ratchet plate, making it easier for the ratchet pawls to catch the ratchet plate. That is, when the ratchet plate follows the opening and closing door plate to move closer to the lower pressing groove, the ratchet pawl catches the ratchet plate, so that the ratchet plate and the opening and closing door plate cannot descend, ensuring that the opening is always open, making it smoother for the scrap steel pieces to enter the hydraulic tank. Under the influence of the air flow in the flat air window, the descending process of the scrap steel pieces is more random.

[0019] Further, the torsion unit includes a pressing block assembly disposed on the synchronous frame assembly; a metering assembly disposed on the box body assembly. The pressing block assembly includes a driving shaft disposed on the driving block, a spiral groove opened on the driving shaft, a small wheel disposed at the end of the driving shaft, a belt disposed on the small wheel, a driven wheel disposed at the other end of the belt, a sleeve shaft disposed on the driven wheel, a square tube opened in the sleeve shaft, a square shaft disposed in the square tube, a circumferential limiting plate disposed at the end of the square shaft, a torsion block disposed at the end of the square shaft, a rotation limiting block disposed on the pressing plate, and a hydraulic rod disposed on the force equalizing plate.

[0020] With the above technical solution, the driven wheel is fixed to the sleeve shaft. When the hydraulic rod extends, that is, when the pressing plate descends, the driving block descends, causing the driving shaft to rotate. The rotation of the driving shaft drives the driven wheel to rotate, causing the sleeve shaft to rotate. Since the sleeve shaft is limited in the vertical direction and can only rotate circumferentially, the circumferential limiting plate at the end of the square shaft is fixed by the rotation limiting block, so that the square shaft will descend as the pressing plate descends, causing the square shaft to slide in the square tube and be driven to rotate by the sleeve shaft at the same time.

[0021] Further, the metering assembly includes a telescopic hole opened at the bottom of the hydraulic tank, a circular groove opened at the bottom of the hydraulic tank, a top plate disposed in the middle of the hydraulic tank, a signal shaft disposed in the telescopic hole, a support plate disposed at the end of the signal shaft, a carrier plate disposed on the support plate, a spring column disposed on the carrier plate, and a convex block disposed on the carrier plate. The signal shaft is fixedly connected to the floating plate.

[0022] With the above technical solution, the spring column supports the carrier plate, so that there is a certain distance between the support plate and the top plate. After the scrap steel pieces enter, the carrier plate gradually descends under the pressure of the scrap steel pieces, causing the signal shaft to gradually extend out of the telescopic hole. When the weight of the scrap steel pieces reaches the set value, the support plate contacts the top plate, and the circumferential edge of the carrier plate contacts the circumferential structure of the bottom of the hydraulic tank at the circular groove, so that the carrier plate can bear the pressure of the hydraulic rod.

[0023] The beneficial effects of the present invention: 1. By rolling the scrap steel sheets to make them bent, under the blowing of the gas in the transom, the scrap steel sheets are more easily affected by the wind, and the falling process is more random, so that in the subsequent compression process, the scrap steel sheets are more easily folded with each other and form an interlock. The block formed by pressing the scrap steel sheets with a large number of interlock structures inside has higher structural strength and is less likely to scatter or disintegrate during transportation, which helps to save transportation costs and the waste of manpower caused by sorting out the scattered scrap steel sheets, and helps to improve work efficiency.

[0024] 2. When the opening and closing door plate rises, the pawl prevents the opening and closing door plate and the pressing plate from descending, realizing the steady rise of the opening, and finally fitting with the feeding trough and the feeding port, so that the scrap steel sheets can smoothly enter the hydraulic tank. When a certain amount of scrap steel sheets enter the hydraulic tank, the floating plate descends, driving the tension rod to descend, and finally realizing the contraction of the pawl, the opening quickly descends, and the passage of the scrap steel sheets entering the hydraulic tank is cut off. The whole process is automated, without human intervention and without power connection. The mechanical structure is simple and not easy to be damaged, which helps to reduce costs and improve labor efficiency, and will not cause the hydraulic equipment to bear too much load due to excessive addition of scrap steel sheets, protecting the hydraulic equipment.

[0025] 3. By the weight of the scrap steel sheets entering the hydraulic tank, the spring column is compressed, so that the signal shaft descends to trigger the tension rod, the opening descends and cuts off the passage of the scrap steel sheets entering the hydraulic tank, realizing that the weight and volume of the scrap steel sheets compressed each time are the same. And due to the movement of the torsion block, the interlock probability and the degree of interlock between the scrap steel sheets are greatly increased, making the structural strength of the compressed scrap steel block higher and less likely to scatter or disintegrate the scrap steel sheets, making the subsequent packing process more convenient, and even packing can be omitted, which is of great significance for saving costs and reducing manpower losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a first - perspective three - dimensional structure schematic diagram of the present invention; Figure 2 is an exploded view of the bending unit, grooving unit and torsion unit of the present invention; Figure 3 is an exploded view of the housing assembly of the present invention; Figure 4 is a partial cross - sectional view of the outer shell of the present invention; Figure 5 is a structural diagram of the pressure roller assembly of the present invention; Figure 6 is a structural diagram of the grooving unit of the present invention; Figure 7 is an exploded view of the box body assembly, synchronous frame assembly and spring frame assembly of the present invention; Figure 8 is a first - perspective structural diagram of the box body assembly of the present invention; Figure 9Partial cross-sectional view of the box assembly of the present invention; Figure 10 Structural diagram of the box assembly of the present invention from the second perspective; Figure 11 Structural diagram of the synchronization frame assembly of the present invention from the first perspective; Figure 12 Structural diagram of the synchronization frame assembly of the present invention from the second perspective; Figure 13 Structural diagram of the cartridge rack assembly of the present invention; Figure 14 Exploded view of the pressure block assembly of the present invention; Figure 15 is Figure 14 Enlarged view of part A in Figure 16 Structural diagram of the metering assembly of the present invention from the first perspective; Figure 17 Structural diagram of the metering assembly of the present invention from the second perspective.

[0027] In the figure: 1, conveyor belt; 2, housing assembly; 21, anti-roll frame; 22, outer shell; 23, receiving port; 24, inclined air window; 25, flat air window; 26, air duct; 27, shaft hole; 28, feed trough; 3, pressure roller assembly; 31, through shaft; 32, roller; 33, male head; 34, female head; 4, box assembly; 41, hydraulic tank; 42, lower pressing groove; 43, feed port; 44, spring seat; 45, double-strand tension spring; 46, support seat; 47, extraction port; 48, lifting door; 49, short rail; 5, synchronization frame assembly; 51, ratchet plate; 52, push block; 53, opening and closing door plate; 54, opening; 55, drive block; 56, pressing plate; 57, torsion groove; 58, force equalizing plate; 6, cartridge rack assembly; 61, T-shaped frame; 62, ratchet pawl; 63, expansion spring; 64, rod seat; 65, intermediate rod; 66, tension rod; 67, floating plate; 7, pressure block assembly; 71, driving shaft; 72, spiral groove; 73, small wheel; 74, belt; 75, driven wheel; 76, sleeve shaft; 77, square cylinder; 78, square shaft; 79, circumferential limiting plate; 710, torsion block; 711, rotation limiting block; 712, hydraulic rod; 8, metering assembly; 81, telescopic hole; 82, circular groove; 83, top plate; 84, signal shaft; 85, support plate; 86, carrier plate; 87, spring column; 88, convex block. Detailed implementation manners

[0028] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given with reference to the accompanying drawings of the specification.

[0029] Example 1, refer to Figures 1-5, which is the first embodiment of the present invention, provides a device for recycling thin and light scrap steel, including a conveyor belt 1, and also including a bending unit, a grooving unit and a twisting unit; the bending unit is installed on one side of the conveyor belt 1; the grooving unit is installed on the bending unit, and can compress the scrap steel into blocks by driving a pressure plate through a hydraulic rod 712, which is convenient for transportation; the twisting unit is installed on the grooving unit, and can fix both ends of the formed scrap steel block and then twist it to make the structure of the scrap steel block denser; the bending unit includes: a housing assembly 2, installed on one side of the conveyor belt 1; the housing assembly 2 includes an anti-roll frame 21 fixedly installed on one side of the conveyor belt 1, an outer shell 22 fixedly installed on the anti-roll frame 21, a receiving port 23 fixedly installed on the outer shell 22, an inclined air window 24 opened on the outer shell 22, a flat air window 25 opened on the outer shell 22, an air duct 26 fixedly installed on the outer shell 22, a shaft hole 27 opened on the outer shell 22, and a feeding groove 28 opened on the outer shell 22; a pressure roller assembly 3, installed inside the housing assembly 2.

[0030] Specifically, after the thin and light scrap steel is classified and preliminarily crushed, it will form fragments with various shapes. The surfaces of the fragments are often covered with stains, dust, paint or composite materials, etc. When compressing into blocks, due to various substances on the surface of the fragments, the structural strength of the compressed scrap steel block is low, and it is easy to scatter or disassemble during transportation.

[0031] After the thin and light scrap steel is transported by the conveyor belt 1, it enters the receiving port 23, and during the falling process, it will be disturbed by the airflow from the inclined air window 24, so that the scrap steel sheets that may be adhered together on the conveyor belt 1 are forced to disassemble and the degree of movement chaos during their falling process is increased, preparing for the next step.

[0032] Refer to Figure 5 , the pressure roller assembly 3 includes a through shaft 31 rotatably installed in the shaft hole 27, a roller 32 fixedly installed on the through shaft 31, a male head 33 fixedly installed on the roller 32, and a female head 34 fixedly installed on the roller 32; The top end of the male head 33 coincides with the bottom end of the female head 34, and the two rollers 32 rotate synchronously.

[0033] Specifically, during the falling process of the scrap steel sheet, after its movement state is disturbed by the airflow of the inclined air window 24, it randomly falls on the roller 32. The through shaft 31 is externally connected to a power device. After the through shaft 31 rotates, it drives one of the rollers 32. Since the male head 33 and the female head 34 coincide, it can drive the other roller 32 to rotate. After the scrap steel sheet falls into the gap between the male head 33 and the female head 34, it is squeezed into the groove of the female head 34 by the male head 33, making the scrap steel sheet bend, and then it falls into the opposite chamber of the flat air window 25 for temporary storage.

[0034] The wind force of the flat air window 25 is equal to that of the inclined air window 24. After the feed chute 28 is unblocked, the flat air window 25 is responsible for blowing the bent scrap steel sheets into the box assembly 4 to start the next step.

[0035] During the use process, since the scrap steel sheets are roll-pressed to make them bent, under the blowing of the gas from the flat air window 25, the scrap steel sheets are more easily affected by the wind force, and the falling process is more random. As a result, in the subsequent compression process, the scrap steel sheets are more likely to fold and interlock with each other. The blocks formed by pressing the scrap steel sheets with a large number of internal interlock structures have higher structural strength and are less likely to scatter or disintegrate during transportation, which helps to save transportation costs and the waste of manpower caused by sorting out the scattered scrap steel sheets, and helps to improve work efficiency.

[0036] Example 2, refer to Figures 6-13 , which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the grooving unit includes a box assembly 4 installed on one side of the housing assembly 2; a synchronous frame assembly 5 installed inside the housing assembly 2; a spring frame assembly 6 installed on the outer wall of the box assembly 4; the box assembly 4 includes a hydraulic tank 41 fixedly installed on one side of the outer shell 22, the hydraulic tank 41 is fixed on the roll cage 21, a downward pressing groove 42 opened at the top of the hydraulic tank 41, a feed inlet 43 opened on one side of the hydraulic tank 41, a spring seat 44 fixedly installed on the hydraulic tank 41, a double-strand tension spring 45 fixedly installed on the spring seat 44, a support seat 46 fixedly installed on a pair of opposite sides of the hydraulic tank 41, a take-out port 47 opened on the other side of the hydraulic tank 41, a lifting door 48 slidably installed on the take-out port 47, and short rails 49 fixedly installed on both sides of the lifting door 48; the lifting door 48 is slidably installed in the short rails 49.

[0037] Specifically, the box assembly 4 is an important part in the compression process. The hydraulic tank 41 is a rectangular box structure, and the pressed scrap steel blocks are also rectangular, which are easy to stack and superimpose. The downward pressing groove 42 is the entry position of the hydraulic equipment. The feed inlet 43 and the feed chute 28 are not always unblocked. The take-out port 47 on the hydraulic tank 41 is used to take out the compressed scrap steel blocks. The lifting door 48 is slidably opened, and the short rails 49 have high structural strength, which is beneficial to the safety and stability of the hydraulic tank 41 during the compression process.

[0038] Refer to Figures 11-12, the synchronization frame assembly 5 includes a ratchet plate 51 slidably mounted on one side of the hydraulic tank 41, a push block 52 fixedly mounted on the ratchet plate 51, an opening and closing door plate 53 fixedly mounted on the ratchet plate 51, an opening 54 formed in the opening and closing door plate 53, a driving block 55 fixedly mounted on the opening and closing door plate 53, a pressing plate 56 fixedly mounted on the driving block 55, a torsion groove 57 formed in the pressing plate 56, and a force equalizing plate 58 fixedly mounted on the pressing plate 56; one end of a double-strand tension spring 45 is fixedly connected to the spring seat 44, and the other end is fixedly connected to the push block 52. The opening and closing door plate 53 and the pressing plate 56 sandwich the side wall of the hydraulic tank 41 therein.

[0039] Specifically, the ratchet plate 51 restricts the easy movement direction of the opening and closing door plate 53 to move in the direction of the downward pressing groove 42. That is, when the pressing plate 56 rises, it drives the ratchet plate 51 to rise, and the ratchet plate 51 will not receive too much resistance. The double-strand tension spring 45 is fixed between the push block 52 and the spring seat 44. That is, under the action of the double-strand tension spring 45, the pressing plate 56 needs to overcome the tension of the double-strand tension spring 45 when rising. In other words, elastic potential energy is accumulated for the double-strand tension spring 45.

[0040] When the pressing plate 56 rises, that is, when the opening and closing door plate 53 rises, the opening 54 on the opening and closing door plate 53 will correspond and coincide with the feeding groove 28 and the feeding port 43, so that the scrap steel sheets can smoothly pass through the feeding groove 28 and the feeding port 43. Similarly, since the opening and closing door plate 53 has the ability to open and close the feeding groove 28 and the feeding port 43, and the double-strand tension spring 45 has a greater pulling force, the tendency of the opening and closing door plate 53 to move downward to close the opening 54 is stronger than that of opening the opening 54.

[0041] The driving block 55 is fixed on the opening and closing door plate 53. The pressing plate 56 is used to compress the scrap steel sheets, and the force equalizing plate 58 evenly distributes the pressure of the hydraulic equipment on the pressing plate 56. The width between the side wall of the pressing plate 56 and the opening and closing door plate 53 is the thickness of the side wall of the hydraulic tank 41. In other words, the side walls of the hydraulic tank 41 and the outer shell 22 jointly play a role in limiting the movement of the pressing plate 56 and the opening and closing door plate 53.

[0042] Refer to Figure 13 , the spring frame assembly 6 includes a T-shaped frame 61 fixedly mounted on one side of the hydraulic tank 41, a ratchet pawl 62 rotatably mounted on the T-shaped frame 61, an expansion spring 63 fixedly mounted on the ratchet pawl 62, a rod seat 64 fixedly mounted on the ratchet pawl 62, an intermediate rod 65 hingedly mounted on the rod seat 64, a tension rod 66 hingedly mounted on the intermediate rod 65, and a floating plate 67 fixedly mounted on the end of the tension rod 66; one end of the expansion spring 63 is fixedly connected to the ratchet pawl 62, and the other end is fixedly connected to the end of the T-shaped frame

[14] , the hydraulic tank 41 is fixedly connected to the roll cage 21.

[0043] Specifically, the T-shaped frame 61 is fixed on the side wall outside the hydraulic tank 41. There is a groove in the middle of the T-shaped frame 61 to limit the movement of the tension rod 66. There are hinge positions at both ends of the T-shaped frame 61, and the pawl 62 can rotate at the hinge positions. The two side expansion springs 63 pull the two side pawls 62 towards the ratchet plate 51, making it easier for the pawl 62 to catch the ratchet plate 51. That is, when the ratchet plate 51 follows the opening and closing door plate 53 to move closer to the lower pressing groove 42, the pawl 62 catches the ratchet plate 51, so that the ratchet plate 51 and the opening and closing door plate 53 cannot descend, ensuring that the opening 54 remains open all the time, making it smoother for the scrap steel sheets to enter the hydraulic tank 41. Under the influence of the air flow in the flat air window 25, the descending process of the scrap steel sheets is more random.

[0044] The functions of the rod seat 64, the middle rod 65 and the tension rod 66 are that when the floating and sinking plate 67 descends, they drive the tension rod 66 to move downward, making the hinge position between the middle rod 65 and the tension rod 66 move downward, driving the two side pawls 62 of the T-shaped frame 61 to contract. Under the action of the double-strand tension spring 45, the ratchet plate 51 and the opening and closing door plate 53 quickly descend, and the opening 54 descends, so that the solid part of the opening and closing door plate 53 blocks the feeding groove 28 and the feeding port 43, and the scrap steel sheets no longer enter the hydraulic tank 41.

[0045] It should be noted that the position of the opening 54 is below the opening and closing door plate 53, that is, the opening and closing door plate 53 needs to move upward a certain distance to make the opening 54 coincide with the feeding groove 28 and the feeding port 43. Therefore, it can be ensured that the scrap steel sheets will not enter the hydraulic tank 41 in advance, resulting in jamming or even damage to the internal structure.

[0046] During the use process, when the opening and closing door plate 53 rises, the pawl 62 prevents the opening and closing door plate 53 and the pressing plate 56 from descending, realizing the steady rise of the opening 54, and finally making it coincide with the feeding groove 28 and the feeding port 43, realizing the smooth entry of the scrap steel sheets into the hydraulic tank 41. When the amount of scrap steel sheets entering the hydraulic tank 41 reaches a certain amount, the floating and sinking plate 67 descends, driving the tension rod 66 to descend, and finally realizing the contraction of the pawl 62, the rapid descent of the opening 54, and cutting off the entry of the scrap steel sheets into the hydraulic tank 41. The whole process is automated, without manual interference and without power connection. The mechanical structure is simple and not easy to be damaged, which helps to reduce costs and improve labor efficiency, and will not cause the hydraulic equipment to bear too much load due to excessive addition of scrap steel sheets, protecting the hydraulic equipment. The rest of the structure is the same as that of Embodiment 1.

[0047] Embodiment 3, refer to Figures 14-17, which is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the torsion unit includes a pressing block assembly 7 installed on the synchronization frame assembly 5, and a metering assembly 8 installed on the box body assembly 4. The pressing block assembly 7 includes a driving shaft 71 slidably installed on the driving block 55, a spiral groove 72 opened on the driving shaft 71, a small wheel 73 fixedly installed at the end of the driving shaft 71, a belt 74 installed on the small wheel 73, a driven wheel 75 installed at the other end of the belt 74, a sleeve shaft 76 fixedly installed on the driven wheel 75, a square tube 77 opened in the sleeve shaft 76, a square shaft 78 slidably installed in the square tube 77, a circumferential limiting plate 79 fixedly installed at the end of the square shaft 78, a torsion block 710 fixedly installed at the end of the square shaft 78, a rotation limiting block 711 fixedly installed on the pressing plate 56, and a hydraulic rod 712 fixedly installed on the equalizing plate 58.

[0048] Specifically, the driving block 55 is sleeved on the driving shaft 71, and the inner convex of the driving block 55 slides in the spiral groove 72. The spiral groove 72 has 4 turns, and the transmission ratio of the small wheel 73 and the driven wheel 75 is 1:2, that is, when the driving shaft 71 rotates 4 turns, the driven wheel 75 rotates two turns.

[0049] The driven wheel 75 is fixed to the sleeve shaft 76. When the hydraulic rod 712 extends, that is, when the pressing plate 56 descends, the driving block 55 descends, causing the driving shaft 71 to rotate. The rotation of the driving shaft 71 drives the driven wheel 75 to rotate, causing the sleeve shaft 76 to rotate. Since the sleeve shaft 76 is limited in the vertical direction and can only rotate circumferentially, the circumferential limiting plate 79 at the end of the square shaft 78 is fixed by the rotation limiting block 711, causing the square shaft 78 to descend as the pressing plate 56 descends, causing the square shaft 78 to slide in the square tube 77 and being driven to rotate by the sleeve shaft 76 at the same time.

[0050] When the square shaft 78 rotates, the torsion block 710 at the end will move at the same time. There are protrusions on the bottom surface of the torsion block 710. When the torsion block 710 rotates, the protrusions will drive the scrap steel sheet contacted by the torsion block 710. At the same time, the hydraulic rod 712 applies a large pressure, so that while the scrap steel sheet is compressed, the two torsion blocks 710 rotate, further intensifying the formation and degree of interlocking, making the structure strength of the compressed scrap steel block greater and less likely to scatter or disintegrate.

[0051] Refer to Figures 16-17 , the metering assembly 8 includes a telescopic hole 81 opened at the bottom of the hydraulic tank 41, a circular groove 82 opened at the bottom of the hydraulic tank 41, a top plate 83 fixedly installed in the middle of the hydraulic tank 41, a signal shaft 84 fixedly installed in the telescopic hole 81, a support plate 85 fixedly installed at the end of the signal shaft 84, a carrier plate 86 fixedly installed on the support plate 85, a spring column 87 installed on the carrier plate 86 in a top-supporting manner, and a convex block 88 fixedly installed on the carrier plate 86; the signal shaft 84 is fixedly connected to the floating plate 67.

[0052] Specifically, the spring column 87 props up the carrier plate 86, so that there is a certain distance between the support plate 85 and the top plate 83. After the scrap steel sheet enters, the carrier plate 86 gradually descends under the pressure of the scrap steel sheet, causing the signal shaft 84 to gradually extend out of the telescopic hole 81. When the weight of the scrap steel sheet reaches the set value, the support plate 85 contacts the top plate 83, and the edge of the carrier plate 86 in the circumferential direction of the support plate 85 contacts the bottom structure of the circumferential hydraulic tank 41 of the circular groove 82, enabling the carrier plate 86 to withstand the pressure of the hydraulic rod 712.

[0053] When the weight of the scrap steel sheet reaches the set value, the displacement of the signal shaft 84 extending out of the telescopic hole 81 reaches the maximum. The signal shaft 84 is fixedly connected to the floating and sinking plate 67, causing the floating and sinking plate 67 to descend to the maximum value, pulling the tension rod 66, releasing the pawl 62, and the opening and closing door plate 53 descends, and the opening 54 moves downward, cutting off the communication between the feed chute 28 and the feed port 43.

[0054] During use, the weight of the scrap steel sheet entering the hydraulic tank 41 compresses the spring column 87, causing the carrier plate 86 to descend. The signal shaft 84 descends to trigger the tension rod 66, releasing the pawl 62, causing the opening 54 to descend, cutting off the channel for the scrap steel sheet to enter the hydraulic tank 41, ensuring that the weight and volume of each compressed scrap steel sheet are the same. Moreover, due to the movement of the torsion block 710, the interlocking probability and degree between the scrap steel sheets are greatly increased, making the structure strength of the compressed scrap steel block higher, less likely to scatter scrap steel sheets or disintegrate, making the subsequent packing process more convenient, and even eliminating the need for packing, which is of great significance for cost savings and reduction of manpower losses. The remaining structure is the same as that of Embodiment 2.

[0055] Combining Embodiments 1 - 3, the working principle of the present invention is as follows: Step 1: After the light and thin scrap steel is classified and preliminarily crushed, it forms fragments with various shapes. After being transported by the conveyor belt 1, the light and thin scrap steel enters the receiving port 23. During the falling process, it is affected by the airflow from the inclined air window 24 and randomly falls on the roller 32. After the scrap steel sheet falls into the gap between the male head 33 and the female head 34, it is squeezed by the male head 33 into the groove of the female head 34, making the scrap steel sheet bend, and then falls into the opposite chamber of the flat air window 25 for temporary storage. Step 2: When the hydraulic rod 712 contracts, it drives the pressure plate 56 and the opening and closing door plate 53 to rise, driving the opening 54 to move upward. The opening 54 gradually corresponds and coincides with the feed chute 28 and the feed port 43. During this process, the pawl 62 prevents the opening and closing door plate 53 and the pressure plate 56 from descending. The pressure plate 56 needs to overcome the tension of the double-strand tension spring 45 when rising. In other words, elastic potential energy is accumulated for the double-strand tension spring 45. When the opening 54 completely corresponds and coincides with the feed chute 28 and the feed port 43, under the influence of the airflow of the flat air window 25, the falling process of the scrap steel sheet is more random and smooth. Step 3: When the weight of the scrap steel sheet reaches the set value, the support plate 85 contacts the top plate 83, and the edge of the carrier plate 86 in the circumferential direction of the support plate 85 contacts the bottom structure of the hydraulic tank 41 at the bottom of the circular groove 82 in the circumferential direction. The carrier plate 86 begins to bear the pressure of the hydraulic rod 712. At this time, the displacement of the signal shaft 84 extending out of the telescopic hole 81 reaches the maximum. The signal shaft 84 is fixedly connected to the floating and sinking plate 67, causing the floating and sinking plate 67 to descend to the maximum value, pulling the tension rod 66, releasing the pawl 62, and the opening and closing door plate 53 descends, and the opening 54 moves downward, cutting off the connection between the feed chute 28 and the feed port 43, blocking the continuous entry of the scrap steel sheet; Step 4: When the hydraulic rod 712 extends, that is, when the pressure plate 56 descends, the driving block 55 descends, causing the driving shaft 71 to rotate. The rotation of the driving shaft 71 drives the driven wheel 75 to rotate, causing the sleeve shaft 76 to rotate. The square shaft 78 slides in the square tube 77 and is simultaneously driven to rotate by the sleeve shaft 76. The torsion block 710 at the end of the square shaft 78 will move simultaneously. There are protrusions on the bottom surface of the torsion block 710. When the torsion block 710 rotates, the protrusions will drive the scrap steel sheet in contact with the torsion block 710. At the same time, the hydraulic rod 712 applies a relatively large pressure, causing the scrap steel sheet to be compressed while the two torsion blocks 710 rotate, further intensifying the formation and degree of interlocking.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A device for recycling waste steel of light and thin types, including a conveyor belt (1), characterized in that: It also includes a bending unit, a grooving unit and a twisting unit; The bending unit is arranged on one side of the conveyor belt (1); the grooving unit is arranged on the bending unit; the twisting unit is arranged on the grooving unit; The bending unit includes: a housing assembly (2), arranged on one side of the conveyor belt (1); the housing assembly (2) includes an anti-rolling frame (21) arranged on one side of the conveyor belt (1), a housing (22) arranged on the anti-rolling frame (21), a receiving port (23) arranged on the housing (22), an inclined air window (24) opened on the housing (22), a flat air window (25) opened on the housing (22), an air duct (26) arranged on the housing (22), a shaft hole (27) opened on the housing (22), and a feed chute (28) opened on the housing (22); A pressure roller assembly (3), arranged inside the housing assembly (2).

2. The light and thin scrap steel crushing, recycling and reusing device according to claim 1, characterized in that: The pressure roller assembly (3) includes a through shaft (31) arranged on the shaft hole (27), a roller (32) arranged on the through shaft (31), a male head (33) arranged on the roller (32), and a female head (34) arranged on the roller (32); The top end of the male head (33) coincides with the bottom end of the female head (34), and the two rollers (32) rotate synchronously.

3. The lightweight scrap steel crushing, recycling and reusing device according to claim 2, characterized in that: The grooving unit includes a box body assembly (4), arranged on one side of the housing assembly (2); a synchronous frame assembly (5), arranged inside the housing assembly (2); a spring frame assembly (6), arranged on the outer wall of the box body assembly (4); The box body assembly (4) includes a hydraulic tank (41) arranged on one side of the housing (22), a lower grooving (42) opened on the top of the hydraulic tank (41), a feed inlet (43) opened on one side of the hydraulic tank (41), a spring seat (44) arranged on the hydraulic tank (41), a double-strand tension spring (45) arranged on the spring seat (44), a support seat (46) arranged on one pair of opposite sides of the hydraulic tank (41), a take-out port (47) opened on the other side of the hydraulic tank (41), a lifting door (48) arranged on the take-out port (47), and short rails (49) arranged on both sides of the lifting door (48); The lifting door (48) is slidably installed in the short rails (49).

4. The light and thin type scrap steel crushing, recycling and reusing device according to claim 3, wherein: The synchronous frame assembly (5) includes a ratchet plate (51) arranged on one side of the hydraulic tank (41), a push block (52) arranged on the ratchet plate (51), an opening and closing door plate (53) arranged on the ratchet plate (51), an opening (54) opened on the opening and closing door plate (53), a driving block (55) arranged on the opening and closing door plate (53), a pressing plate (56) arranged on the driving block (55), a twisting groove (57) opened on the pressing plate (56), and a force equalizing plate (58) arranged on the pressing plate (56); One end of the double-strand tension spring (45) is fixedly connected to the spring seat (44), and the other end is fixedly connected to the push block (52). The opening and closing door plate (53) and the pressing plate (56) sandwich the side wall of the hydraulic tank (41) inside.

5. The light and thin scrap steel crushing, recycling and reusing device according to claim 4, characterized in that: The cartridge rack assembly (6) includes a T-shaped frame (61) disposed on one side of the hydraulic tank (41), a pawl (62) disposed on the T-shaped frame (61), a tension spring (63) disposed on the pawl (62), a rod seat (64) disposed on the pawl (62), an intermediate rod (65) disposed on the rod seat (64), a tension rod (66) disposed on the intermediate rod (65), and a floating plate (67) disposed at the end of the tension rod (66); One end of the tension spring (63) is fixedly connected to the pawl (62), and the other end is fixedly connected to the end of the T-shaped frame (61). The hydraulic tank (41) is fixedly connected to the roll cage (21).

6. The light and thin scrap steel crushing, recycling and reusing device according to claim 5, characterized in that: The torsion unit includes a pressing block assembly (7) disposed on the synchronous frame assembly (5); a metering assembly (8) disposed on the box body assembly (4); The pressing block assembly (7) includes a driving shaft (71) disposed on the driving block (55), a spiral groove (72) formed in the driving shaft (71), a small wheel (73) disposed at the end of the driving shaft (71), a belt (74) disposed on the small wheel (73), a driven wheel (75) disposed at the other end of the belt (74), a sleeve shaft (76) disposed on the driven wheel (75), a square cylinder (77) formed in the sleeve shaft (76), a square shaft (78) disposed in the square cylinder (77), a circumferential limiting plate (79) disposed at the end of the square shaft (78), a torsion block (710) disposed at the end of the square shaft (78), a rotation limiting block (711) disposed on the pressing plate (56), and a hydraulic rod (712) disposed on the force equalizing plate (58).

7. The light and thin type scrap steel crushing, recycling and reusing device according to claim 6, wherein: The metering assembly (8) includes a telescopic hole (81) formed in the bottom of the hydraulic tank (41), a circular groove (82) formed in the bottom of the hydraulic tank (41), a top plate (83) disposed in the middle of the hydraulic tank (41), a signal shaft (84) disposed in the telescopic hole (81), a support plate (85) disposed at the end of the signal shaft (84), a carrier plate (86) disposed on the support plate (85), a spring post (87) disposed on the carrier plate (86), and a convex block (88) disposed on the carrier plate (86); The signal shaft (84) is fixedly connected to the floating plate (67).

Images